[User]
Hi, I'm looking to create a set of parametric clamps for a small drill press, and I'd like to use OpenSCAD for this. I need two clamps, a top and bottom, and I'd also like to include a quick-release lever mechanism. I've seen some examples, but I'd like something tailored to my specific needs, and I'd like it to be fully parametric so I can tweak the dimensions easily.

Here's a breakdown of what I need for each component:

**Bottom Clamp:**

*   **Base:** This will be a rectangular block with rounded corners and mounting holes. I need to specify:
    *   Overall width, height, and thickness.
    *   Corner radius for the rounded edges.
    *   Spacing for the mounting holes, which should be symmetrical.
    *   The type of fixing used for these holes (e.g., M3, M4 screws).
*   **Stem:** This will connect the base to the ring. It should be a solid piece with a rectangular profile that transitions to a circular profile where it meets the ring.
    *   Width and height of the base of the stem
    *   Offset of the ring from the base along the X, Y and Z axes.
*   **Ring:** This goes around the object being clamped.
    *   Height, inner diameter, and thickness
    *   Depth and height of a recess on one side of the ring.
*   **Clamp Section:** This is part of the ring but has a slot for the screw.
    *   Length and slot width.
    *   The type of fixing used for the clamping screw.
    *   A parameter to specify depth of the fixing or choose to generate no recess for the screw head.

**Top Clamp:**
This needs to be very similar to the bottom clamp, but with a few differences:
    *   The base width and base hole spacing will be wider than for the bottom clamp
    *   The ring offset needs to be along only Z axis, but also requires a rotation about X axis.
    *  The ring inner diameter needs to be bigger than the bottom clamp ring.
    *  No ring recess is needed.
**Quick Release Lever:**

*   **Lever Body:** This needs to be a shaped lever handle that pivots.
    *   A smooth outer radius and inner radius.
    *   An offset from the centre along the X axis.
    *   A smoothing parameter for rounded edges.
    *   Overall height
*   **Cam:** A cam section that rotates against the clamp.
    *   The diameter and height.
    *   An offset from the centre.
    *   A slot to allow movement.
*   **Pivot:** The pivot allows the cam to rotate.
    *   Diameter and height
    *   Clearance hole diameter for smooth rotation
    *   How far to offset from zero for max throw and the angle.

I'd like to be able to enable/disable the generation of the quick-release and pivot, just to make the model easier to work with in some circumstances. I'm looking to use the `nutsnbolts` library for all the fixings, I don't need any other libraries.
I am happy for the code to make use of the `hull` and `minkowski` operators as required.

Could you generate OpenSCAD code for this? Thanks.

[Assistant]
CustomClamp-Bottom.scad:
```
$fn=200; // Faces on round things. 200 is good for printing and 20 for general viewing

include <nutsnbolts/materials.scad>;
include <nutsnbolts/cyl_head_bolt.scad>;

// Curves on base and end of clamp
corner_radius = 3;

//  This is the base of the clamp
base_width = 36;
base_height = 12;
base_thickness = 6;
// Base fixing holes. They are always symmetrical.
base_hole_spacing = 20;
base_fixing = "M3";

// Stem between base and ring.
// The clamped object will be the length of this plus the thickness of the ring from the base
stem_base_width = 12;
stem_base_height = 12;
stem_ring_offset = [0, 0, 10]; // Up/down, left/right, length

// This is the ring that goes around the clamped object
ring_height = 12;
ring_inner_diameter = 26;
ring_thickness = 6;	// Needs to be thick enough for fixing holes
ring_recess_depth = 2;  // This allows for an extra recessed bit at one side of the ring
ring_recess_height = 6;

// Clamp section
// This has a nut on one side and an optional recess for a bolt on the other
clamp_length = 15;
clamp_slot_width = 4;
clamp_fixing = "M3";
clamp_fixing_depth = 0; // -1 is automatic but generates hole for hexagon socket head cap. 0 is no recess, which is good for quick releases

// Derived variables
ring_outer_diameter = ring_inner_diameter + ring_thickness*2;

cfdat = _get_fam(clamp_fixing);
clamp_fixing_depth1 = cfdat[_NB_F_NUT_HEIGHT];  // Nutcatch on one side
//if (clamp_fixing_depth <0 )
	clamp_fixing_depth2 = (clamp_fixing_depth <0) ? cfdat[_NB_F_HEAD_HEIGHT] : clamp_fixing_depth;

//	clamp_fixing_depth2 = 5;

bfdat = _get_fam(base_fixing);
base_fixing_depth = bfdat[_NB_F_NUT_HEIGHT];

// Generate the base
module base () {
	difference () {
		hull () {
			x1 = base_height/2 - corner_radius; x2 = - base_height/2 + corner_radius;
			y1 = base_width/2 - corner_radius; y2 = - base_width/2 + corner_radius;
			translate ([x1, y1, 0]) cylinder (h=base_thickness, r=corner_radius);
			translate ([x2, y1, 0]) cylinder (h=base_thickness, r=corner_radius);
			translate ([x1, y2, 0]) cylinder (h=base_thickness, r=corner_radius);
			translate ([x2, y2, 0]) cylinder (h=base_thickness, r=corner_radius);

		}

		// Fixing holes in base
		translate([0, 0, base_thickness]) {
			for (offset = [-1 : 2: 1]) {
				translate ([0, offset*base_hole_spacing/2, 0]) {
					nutcatch_parallel(name=base_fixing, l=base_fixing_depth, clk=0.1);
					hole_through(name=base_fixing, l=base_thickness+5);
				}
			}
		}
	}
}

// Generate stem
module stem () {
	hull () {
		translate ([0, 0, -1]) cube ( size=[stem_base_height, stem_base_width, 0.01], center=true);
		translate(stem_ring_offset) cube (size=[ring_height,ring_height, 0.01], center=true);
	}
}

// Rotated into clamp frame but located at end of stem
// Inner cylinder still to be subtracted so can "go into" clamp.
// The ring removes the slot in the clamp later on.
module clamp () {
	translate ([-ring_outer_diameter, -(ring_thickness*2 + clamp_slot_width)/2, -ring_height/2 ]) {
			difference (){
				hull () {
					cube(size=[ring_outer_diameter/2 , ring_thickness*2+clamp_slot_width, ring_height]);
					translate ([-clamp_length+corner_radius, corner_radius, 0]) cylinder (h=ring_height, r=corner_radius);
					translate ([-clamp_length+corner_radius, ring_thickness*2 + clamp_slot_width - corner_radius, 0]) cylinder (h=ring_height, r=corner_radius);
				}
				// Add the clamp fixing hole
				union () {
					rotate ([0, 90, 90])
					translate ([-ring_height/2, (clamp_length-corner_radius)/2, clamp_fixing_depth1])
					nutcatch_parallel(name=clamp_fixing, l=clamp_fixing_depth1, clk=0.1);

					rotate ([0, 90, 90])
					translate ([-ring_height/2, (clamp_length-corner_radius)/2, ring_thickness*2+clamp_slot_width+0.5])hole_through(name=clamp_fixing, l=ring_thickness*2+clamp_slot_width+1, h=clamp_fixing_depth2);
				}
		}
	}
}

module ring () {
	difference () {
		union () {
			// Generate a cube to cover gap between stem and clamp ring. Excess will be removed by difference.
			translate ([-ring_outer_diameter/2, -ring_height/2, -ring_height/2]) cube( size=[ring_outer_diameter/2, ring_height,ring_height]);
			translate ([-ring_outer_diameter/2, 0, -ring_height/2]) cylinder (h=ring_height, r=ring_outer_diameter/2);
			clamp ();
		}
// These two cylinders get subtracted from the clamp
		union () {
			translate ([-ring_outer_diameter/2, 0, -ring_height/2]) {
				cylinder (h=ring_height, r=ring_inner_diameter/2);
				//translate([0, 0, (ring_height - ring_recess_height)/2])
				cylinder (h=ring_recess_height, r=(ring_inner_diameter+ring_recess_depth)/2);

			}
// And the slot in the clamp
			translate ([-ring_outer_diameter, -(ring_thickness + clamp_slot_width/2), -ring_height/2 ]) 			translate ([-clamp_length-1, ring_thickness, 0]) cube (size=[clamp_length + ring_outer_diameter/2,clamp_slot_width,ring_height]);
		}
	}
}

union () {
	rotate ([0, 90, 0]) {
		base ();
		translate ([0, 0, base_thickness]) {
			stem ();
			// Ring also draws clamp.
			// I really regret doing this rotate here BTW. It made life hard elsewhere.
			translate(stem_ring_offset) rotate([0, 90, 0]) ring ();
		}
	}
}

```
CustomClamp-Top.scad:
```
$fn=200; // Faces on round things. 200 is good for printing and 20 for general viewing

include <nutsnbolts/materials.scad>;
include <nutsnbolts/cyl_head_bolt.scad>;

// Curves on base and end of clamp
corner_radius = 3;

//  This is the base of the clamp
base_width = 45+14;
base_height = 12;
base_thickness = 6;
// Base fixing holes. They are always symmetrical.
base_hole_spacing = 45;
base_fixing = "M3";

// Stem between base and ring.
// The clamped object will be the length of this plus the thickness of the ring from the base
stem_base_width = 12;
stem_base_height = 12;
stem_ring_offset = [0, 0, 0]; // Up/down, left/right, length
stem_ring_rotate = [0, 90, 0];

// This is the ring that goes around the clamped object
ring_height = 12;
ring_inner_diameter = 44; // Was 30!!!
ring_thickness = 6;	// Needs to be thick enough for fixing holes
ring_recess_depth = 0;  // This allows for an extra recessed bit at one side of the ring
ring_recess_height = 6;

// Clamp section
// This has a nut on one side and an optional recess for a bolt on the other
clamp_length = 15;
clamp_slot_width = 4;
clamp_fixing = "M3";
clamp_fixing_depth = 0; // -1 is automatic but generates hole for hexagon socket head cap. 0 is no recess, which is good for quick releases

// Derived variables
ring_outer_diameter = ring_inner_diameter + ring_thickness*2;

cfdat = _get_fam(clamp_fixing);
clamp_fixing_depth1 = cfdat[_NB_F_NUT_HEIGHT];  // Nutcatch on one side
//if (clamp_fixing_depth <0 )
	clamp_fixing_depth2 = (clamp_fixing_depth <0) ? cfdat[_NB_F_HEAD_HEIGHT] : clamp_fixing_depth;

//	clamp_fixing_depth2 = 5;

bfdat = _get_fam(base_fixing);
base_fixing_depth = bfdat[_NB_F_NUT_HEIGHT];

// Generate the base
module base () {
	difference () {
		hull () {
			x1 = base_height/2 - corner_radius; x2 = - base_height/2 + corner_radius;
			y1 = base_width/2 - corner_radius; y2 = - base_width/2 + corner_radius;
			translate ([x1, y1, 0]) cylinder (h=base_thickness, r=corner_radius);
			translate ([x2, y1, 0]) cylinder (h=base_thickness, r=corner_radius);
			translate ([x1, y2, 0]) cylinder (h=base_thickness, r=corner_radius);
			translate ([x2, y2, 0]) cylinder (h=base_thickness, r=corner_radius);

		}

		// Fixing holes in base
		translate([0, 0, base_thickness]) {
			for (offset = [-1 : 2: 1]) {
				translate ([0, offset*base_hole_spacing/2, 0]) {
					nutcatch_parallel(name=base_fixing, l=base_fixing_depth, clk=0.1);
					hole_through(name=base_fixing, l=base_thickness+5);
				}
			}
		}
	}
}

// Generate stem
module stem () {
	hull () {
		translate ([0, 0, -1]) cube ( size=[stem_base_height, stem_base_width, 0.01], center=true);
		translate(stem_ring_offset) cube (size=[ring_height,ring_height, 0.01], center=true);
	}
}

// Rotated into clamp frame but located at end of stem
// Inner cylinder still to be subtracted so can "go into" clamp.
// The ring removes the slot in the clamp later on.
module clamp () {
	translate ([-ring_outer_diameter, -(ring_thickness*2 + clamp_slot_width)/2, -ring_height/2 ]) {
			//union () {
			difference (){
				hull () {
					cube(size=[ring_outer_diameter/2 , ring_thickness*2+clamp_slot_width, ring_height]);
					translate ([-clamp_length+corner_radius, corner_radius, 0]) cylinder (h=ring_height, r=corner_radius);
					translate ([-clamp_length+corner_radius, ring_thickness*2 + clamp_slot_width - corner_radius, 0]) cylinder (h=ring_height, r=corner_radius);
				}
				// Add the clamp fixing hole
				union () {
					rotate ([0, 90, 90])
					translate ([-ring_height/2, (clamp_length-corner_radius)/2, clamp_fixing_depth1])
					nutcatch_parallel(name=clamp_fixing, l=clamp_fixing_depth1, clk=0.1);

					rotate ([0, 90, 90])
					translate ([-ring_height/2, (clamp_length-corner_radius)/2, ring_thickness*2+clamp_slot_width+0.5])hole_through(name=clamp_fixing, l=ring_thickness*2+clamp_slot_width+1, h=clamp_fixing_depth2);
				}
		}
	}
}

module ring () {
	difference () {
		union () {
			// Generate a cube to cover gap between stem and clamp ring. Excess will be removed by difference.
			translate ([-ring_outer_diameter/2, -ring_height/2, -ring_height/2]) cube( size=[ring_outer_diameter/2, ring_height,ring_height]);
			translate ([-ring_outer_diameter/2, 0, -ring_height/2]) cylinder (h=ring_height, r=ring_outer_diameter/2);
			clamp ();
		}
// These two cylinders get subtracted from the clamp
		union () {
			translate ([-ring_outer_diameter/2, 0, -ring_height/2]) {
				cylinder (h=ring_height, r=ring_inner_diameter/2);
				//translate([0, 0, (ring_height - ring_recess_height)/2])
				cylinder (h=ring_recess_height, r=(ring_inner_diameter+ring_recess_depth)/2);

			}
// And the slot in the clamp
			translate ([-ring_outer_diameter, -(ring_thickness + clamp_slot_width/2), -ring_height/2 ]) 			translate ([-clamp_length-1, ring_thickness, 0]) cube (size=[clamp_length + ring_outer_diameter/2,clamp_slot_width,ring_height]);
		}
	}
}

union () {
	rotate ([0, 90, 0]) {
		base ();
		translate ([0, 0, base_thickness]) {
			stem ();
			// Ring also draws clamp.
			// I really regret doing this rotate here BTW. It made life hard elsewhere.
			translate(stem_ring_offset) rotate(stem_ring_rotate) ring ();
		}
	}
}

```
QuickRelease.scad:
```
lever_faces = 32; //32; // Don't go mad as the minkowski takes ages! 32 (0r even 40) seem OK but 20 is *much* faster
cam_faces = 120;  // Needs to be supersmooth

include <nutsnbolts/materials.scad>;
include <nutsnbolts/cyl_head_bolt.scad>;

/* [STL element to export] */
//Release
Enable_Release          = 1;// [0:No, 1:Yes]
//Pivot
Enable_Pivot         = 1;// [0:No, 1:Yes]

outer_radius = 40;
inner_radius = 38;
radius_offset = 10; // Same as cam diameter?
lever_smooth = 2;
lever_height = 10;
// The _s versions are used to constuct core of level as minkowski makes it larger
lever_height_s = lever_height-lever_smooth*2;
outer_radius_s = outer_radius-lever_smooth;
inner_radius_s = inner_radius+lever_smooth;

pivot_fixing = "M3"; // We use a hex nutcatch to allow adjustment using turns of lever in other axis

cam_diameter = 14; // was 20
cam_height = 12;
cam_slot_offset = 4;
cam_slot_height = 4;		//! Lookup!
cam_bolthead_diameter = 7;	//! Lookup!

pivot_diameter = 8;
pivot_clearance = 1;	// quites high but my cylinders come out large and holes small!
pivot_hole_diameter = pivot_diameter+pivot_clearance; // was 12
pivot_height = cam_height;
pivot_throw = 2; // Because this is used as an offset, the min/max of the cam is twice this but it's only given a half turn
pivot_throw_angle = 20;
ptx = sin(pivot_throw_angle)*pivot_throw; // was cos
pty = cos(pivot_throw_angle)*pivot_throw;

// Not used as we put fixing in centre of pivot
//cfdat = _get_fam(pivot_fixing);
//pivot_fixing_depth = cfdat[_NB_F_NUT_HEIGHT];  // Nutcatch on one side

module lever () {
	$fn = lever_faces;
	difference () {
	//union () {
	    //union () {
	    minkowski () {
		difference () {
			// Two cylinders to form lever
			cylinder(h=lever_height_s, r=outer_radius_s, center=true);
			translate ([-radius_offset, 0, -1]) cylinder(h=lever_height_s+2, r=inner_radius_s, center=true);
		}
		translate ([outer_radius_s, 0, 0]) sphere(r=lever_smooth);
	}
		// Cube to slice off lever
		translate ([0, -outer_radius-1, -lever_height/2-1]) cube([outer_radius*2+1, outer_radius+1, lever_height+2]);
	}
}

module cam () {
	$fn = cam_faces;
	translate ([inner_radius+outer_radius-cam_diameter*0.5, 0, -cam_height/2]) {
		//union () {
		cylinder (h=cam_height, r=cam_diameter/2);
	}
}

module cam_pivot () {
	$fn = cam_faces;
	//union () {
	difference () {
		color("red") translate ([inner_radius+outer_radius-cam_diameter*0.5+ptx, pty, -cam_height/2]) cylinder (h=pivot_height, r=pivot_diameter/2);
		union () {
			translate ([ptx, pty, 0]) rotate ([30, 0, 0]) rotate ([0, 90, 0]) translate([0, 0, inner_radius+outer_radius-cam_diameter*0.5+pivot_diameter/2]) {
				nutcatch_parallel(name=pivot_fixing, l=pivot_diameter/2, clk=0.1);
				hole_through(name=pivot_fixing, l=pivot_diameter+5);
			}
		}
	}
}

module release () {
$fn = cam_faces;
	//union () {
	difference () {
		union () {
			lever ();
			cam ();
		}
		// Cam slot
		translate ([0, -outer_radius*2+cam_slot_offset, -cam_slot_height/2]) cube([outer_radius*4, outer_radius*2, cam_slot_height]); //OTT but just copied from above!
		// Hole in the cam and release
		translate ([inner_radius+outer_radius-cam_diameter*0.5+ptx, pty, -cam_height/2-1]) cylinder (h=pivot_height+2, r=pivot_hole_diameter/2);
		// Hole so we can fit the bolte
		translate ([inner_radius+outer_radius-cam_diameter*0.5+ptx, pty, 0]) rotate ([0, 90, 0]) cylinder (h=cam_diameter+1, r=cam_bolthead_diameter/2);
	}
}

// Generate release lever and cam pivot
if (Enable_Release == 1) release ();
if (Enable_Pivot == 1)
	//Comment out line below to view pivot in cam
	translate([(((Enable_Release ==1) && (Enable_Pivot ==1)) ? -inner_radius : 0), 0, 0])
	cam_pivot();

```


[User]
Hi, I'm looking to generate a braided bracelet design in OpenSCAD, and I'm hoping you can help me create the necessary files. I have a rough idea of what I want, and I've included a simplified version of the concept for reference, but I'd like you to build the design from scratch.

The bracelet should be made of a single strand that wraps around the wrist three times. The core idea is that this single strand should have an undulating, wavy path rather than a simple helix. Specifically, the strand should wrap around in a spiral while also oscillating back and forth radially relative to the center of the bracelet.

Here are the parameters I'd like to be able to control:

*   **`r1` (Average Radius):** This should be the average radius of the bracelet, measured from the center to the middle of the strand. I'd like to be able to change this to adjust for different wrist sizes (e.g., values between 5 and 40).
*   **`r2` (Radial Variation):** This controls the amplitude of the radial oscillation of the strand as it spirals around the wrist. A larger value should cause the strand to move further from and closer to the center. I'd like to be able to set values in the range of 1 to 3 for this.
*   **`r3` (Height):** This parameter will set the overall height/thickness of the bracelet along the Z axis. I'd need to set values from 5 to 10 here.
*   **`sphererad` (Strand Radius):** This parameter determines the thickness of the strand itself. I need this to be adjustable, ideally between 1 and 3. The strand should be generated by sweeping a sphere along the path.
*   **`windings` (Winding per revolution):** This is for controlling how many times the strand "waves" up and down as it completes one revolution around the bracelet. This will be the number of oscillation cycles it does around the bracelet axis. I plan to use this as an integer value.
*   **`m` (Smoothness):** This parameter will control how smooth the generated strand will be. I'd like to be able to set values from 200 to 400, with higher values producing smoother curves.

The provided example uses a `hull()` operation for smoothness, and that's fine for the design. I think I want this to use only the OpenSCAD built-in primitives, so don't worry about adding any custom libraries.

Could you please generate the OpenSCAD code based on this description? Let me know if anything is unclear!

[Assistant]
Braid2.scad:
```
/*[Settings]*/

//Average radius of ring
r1=30;//[5:40]

// Variation from Average radius
r2=2;//[1:3]

//Height of ring
r3=5;//[5:10]

//Radius of strand
sphererad=2;//[1:3]

//Number of winding per revolution
windings = 7;

//Smoothness of plot
m=300;//[200:400]

n=windings+1/3;

for (i=[0:m-1])
{
    hull()
    {
        translate([(r1+r2*sin(6*n*360/m*i))*cos(3*360/m*i),
                   (r1+r2*sin(6*n*360/m*i))*sin(3*360/m*i),
                   r3*cos(n*3*360/m*i)]) scale([1,1,1.5])sphere(sphererad,$fn=20);
        translate([(r1+r2*sin(6*n*360/m*(i+1)))*cos(3*360/m*(i+1)),
                   (r1+r2*sin(6*n*360/m*(i+1)))*sin(3*360/m*(i+1)),
                   r3*cos(n*3*360/m*(i+1))]) scale([1,1,1.5])sphere(sphererad,$fn=20);
    }

}

```


[User]
Hey, I'm looking to create a customizable ring design, kind of like a braided or twisted look. I've seen some examples, and I'd really like to be able to adjust a few things, specifically the ring size, obviously, but also the height, thickness of the strands, the number of twists or 'periods' around the ring, and even the 'step' which controls how smooth the curves are.

It would be great if I could specify my ring size using standard sizing like US, UK, EU, etc. So the program should be able to handle different sizing conventions. For the ring itself, I'd like to control the overall height of the ring (how tall it stands off the finger) and then the thickness of the individual strands that are twisted together. Then the twist itself should be adjustable, like I can specify how many full rotations or twists occur around the ring, and the step controls how much detail is in each curve. I think this design can be made using spheres scaled and moved along a path, and then I'd like to use `hull()` to connect those shapes.

I'm envisioning that I could choose to see either the full ring, with three strands, or just a single strand to see how the path looks.

Can you help me generate an OpenSCAD file or files to do this? I don't have any specific library requirements. I think it could be done with the built-in primitives, and some math to move those spheres along the path.

[Assistant]
BraidedRing.scad:
```
/* [Ring Maker] */
// this uses a lot of hull commands, and thus takes a while to load.

//bare in mind that printers often print weird, so it might scaled in your slicer or cleaned up

//BEGIN CUSTOMIZER VARIABLES
/*[Sizing]*/
Country="United States"; //[United States,Canada,Mexico,United Kingdom,Ireland,Australia,New Zealand,South Africa,Italy,Spain,Netherlands,Switzerland,India,China,South America,Japan,France,Germany,Austria,Belgium,Scandinavia]
//Format half sizes like that, regular sizes no spaces, always use capital letters if needed.
sizeValue= "11";
// Which one would you like to see?// Which one would you like to see?
part = 1; // [1:wholeRing,0:one strand]
/* [Ring Options] */
//work in progress
ringheight=3;
//ditto
thickness=2;//[1:0.5:10]
periods = 6;
//higher step takes more time but looks less blocky.
step = 5;//[.5:.5:20]
$fn=9;
/*[Extras]*/
//END CUSTOMIZER VARIABLES

/* [Hidden] */
US_Countries=["US","United States","Canada","Mexico"];
UK_Countries=["UK","United Kingdom","Ireland","Australia","New Zealand","South Africa"];
Spain_Countries=["ES","Italy","Spain","Netherlands","Switzerland"];
India_Countries=["IN","India"];
China_Countries=["CI","China","South America"];
Japan_Countries=["JP","Japan"];
ISO_Countries=["EU","France","Germany","Austria","Belgium","Scandinavia"];
//https://en.wikipedia.org/wiki/Ring_size

//USSizes_All
//USValues_All
//UKValues_All
//China_All
//India_All
//Spain_All
//source : https://www.kuberbox.com/blog/international-ring-size-conversion-chart/

if (search([Country],US_Countries)[0]>0)
{
  USValues_All=["1/2","3/4"   ,"1"  ,"1 1/4"  ,"1 1/2"  ,"1 3/4"  ,"2"     ,"2 1/4"  ,"2 1/2"  ,"2 3/4"  ,"3"     ,"3 1/4"  ,"3 1/2"  ,"3 3/4"  ,"4"     ,"4 1/4"  ,"4 1/2"  ,"4 3/4" ,"5"     ,"5 1/4"  ,"5 1/2" ,"5 3/4"  ,"6"      ,"6 1/4" ,"6 1/2"  ,"6 3/4"  ,"7"      ,"7 1/4"  ,"7 1/2"  ,"7 3/4" ,"8"      ,"8 1/4" ,"8 1/2"  ,"8 3/4" ,"9"     ,"9 1/4"  ,"9 1/2"  ,"9 3/4" ,"10"     ,"10 1/4"  ,"10 1/2"  ,"10 3/4" ,"11"     ,"11 1/4" ,"11 1/2"  ,"11 3/4" ,"12"     ,"12 1/4" ,"12 1/2"  ,"12 3/4"  ,"13"     ,"13 1/4"   ,"13 1/2"  ,"13 3/4" ,"14"     ,"14 1/4"  ,"14 1/2"  ,"14 3/4"  ,"15"      ];
  USSizes_All =[12.04,12.24   ,12.45,12.65    ,12.85    ,13.06    ,13.26   ,13.46    ,13.67    ,13.87    ,14.07   ,14.27    ,14.48    ,14.68    ,14.88   ,15.09    ,15.29    ,15.49   ,15.7    ,15.9     ,16.1    ,16.31    ,16.51    ,16.71   ,16.92    ,17.12    ,17.32    ,17.53    ,17.73    ,17.93   ,18.14    ,18.34   ,18.54    ,18.75   ,18.95   ,19.15    ,19.35    ,19.56   ,19.76    ,19.96     ,20.17     ,20.37    ,20.57    ,20.78    ,20.98     ,21.18    ,21.39    ,21.59    ,21.79     ,22        ,22.2     ,22.4       ,22.61     ,22.81    ,23.01    ,23.22     ,23.42     ,23.62     ,23.83     ];
  ring(USSizes_All[search([str(sizeValue)],USValues_All)[0]]);
}

else if (search([Country],ISO_Countries)[0]>0)
{
  EUValues_All =["44","45","46","47","48","49","50","51","52","53","54","55","56","57","58","59","60","61","62","63","64","65","66","67","68","69","70","71"];
  EUSizes_All  =[14.01,14.33,14.65,14.97,15.29,15.61,15.92,16.24,16.56,16.88,17.2,17.52,17.83,18.15,18.47,18.79,19.11,19.43,19.75,20.06,20.38,20.7,21.02,21.34,21.66,21.97,22.29,22.61];
  //source : http://www.cartier.fr/fr/services/le-guide-cartier/guide-des-tailles/guide-des-tailles-bagues/-10402.html
  ring(EUSizes_All[search([str(sizeValue)],EUValues_All)[0]]);
}

else if (search([Country],Spain_Countries)[0]>0)
{
  SpainValues_All =["0.5", "1"  , "1.75", "2.25", "3"  , "3.5", "4.25", "4.75", "5.5", "6"  , "6.75", "7.5", "8"  , "8.75", "9.25", "10", "10.5", "11.25", "11.75", "12.5", "13.25", "13.75", "14.5", "15" , "15.75", "16.25", "17" , "17.5", "18.25", "19" , "19.5", "20.25", "20.75", "21.5", "22" , "22.75", "23.25", "24" , "24.75", "25.25", "26" , "26.5", "27.25", "27.75", "28.5", "29", "29.75", "30.5", "31" , "31.75", "32.25", "33" , "33.5", "34.25", "34.75"];
  SpainSizes_All  =[12.85, 13.06, 13.26 , 13.46 , 13.67, 13.87, 14.07 , 14.27 , 14.48, 14.68, 14.88 , 15.09, 15.29, 15.49 , 15.7  , 15.9, 16.1  , 16.31  , 16.51  , 16.71 , 16.92  , 17.12  , 17.32 , 17.53, 17.73  , 17.93  , 18.14, 18.34 , 18.54  , 18.75, 18.95 , 19.15  , 19.35  , 19.56 , 19.76, 19.96  , 20.17  , 20.37, 20.57  , 20.78  , 20.98, 21.18 , 21.39  , 21.59  , 21.79 , 22  , 22.2   , 22.4  , 22.61, 22.81  , 23.01  , 23.22, 23.42 , 23.62  , 23.83  ];
  ring(SpainSizes_All[search([str(sizeValue)],SpainValues_All)[0]]);
}

else if (search([Country],UK_Countries)[0]>0)
{
  UKValues_All=["A"  , "A 1/2", "B"  , "B 1/2", "C"  , "C 1/2", "D"  , "D 1/2", "E"  , "E 1/2", "F"  , "F 1/2", "G"  , "G 1/2", "H"  , "H 1/2", "I"  , "J"  , "J 1/2", "K" , "K 1/2", "L"  , "L 1/2", "M"  , "M 1/2", "N"  , "N 1/2", "O"  , "O 1/2", "P"  , "P 1/2", "Q"  , "Q 1/2", "R"  , "R 1/2", "S"  , "S 1/2", "T"  , "T 1/2", "U"  , "U 1/2", "V"  , "V 1/2", "W"  , "W 1/2", "X"  , "X 1/2", "Y"  , "Z"  , "Z 1/2", "Z1", "Z2" , "Z3" , "Z4" ];
  UKSizes_All =[12.04, 12.24  , 12.45, 12.65  , 12.85, 13.06  , 13.26, 13.46  , 13.67, 13.87  , 14.07, 14.27  , 14.48, 14.68  , 14.88, 15.09  , 15.29, 15.49, 15.7   , 15.9, 16.1   , 16.31, 16.51  , 16.71, 16.92  , 17.12, 17.32  , 17.53, 17.73  , 17.93, 18.14  , 18.34, 18.54  , 18.75, 18.95  , 19.15, 19.35  , 19.56, 19.76  , 19.96, 20.17  , 20.37, 20.57  , 20.78, 20.98  , 21.18, 21.39  , 21.59, 21.79, 22     , 22.4, 22.81, 23.01, 23.42];
  ring(UKSizes_All[search([str(sizeValue)],UKValues_All)[0]]);
}

else if (search([Country],India_Countries)[0]>0)
{
  IndiaValues_Main   =["1"      ,"2"     ,"3"      ,"4"      ,"5"      ,"6"      ,"7"      ,"8 1/2"  ,"9"     ,"10"     ,"11"     ,"12"     ,"13"     ,"14"     ,"15"     ,"16"    ,"17"     ,"18"     ,"19"    ,"20"     ,"21"     ,"22"     ,"23"      ,"24"     ,"25"     ,"26"      ,"27"      ,"28"     ,"29"      ,"30"     ,"31"      ,"32"     ,"33"      ,"34"      ,"35"      ];
  IndiaSizes_Main    =[13.06    ,13.26   ,13.67    ,13.87    ,14.27    ,14.68    ,15.09    ,15.29    ,15.49   ,15.9     ,16.31    ,16.51    ,16.92    ,17.32    ,17.53    ,17.93   ,18.14    ,18.54    ,18.75   ,19.15    ,19.35    ,19.76    ,19.96     ,20.37    ,20.57    ,20.98     ,21.39    ,21.59    ,22        ,22.2     ,22.61     ,22.81    ,23.22     ,23.62     ,23.83     ];
  ring(IndiaSizes_Main[search([str(sizeValue)],IndiaValues_Main)[0]]);
}

else if (search([Country],China_Countries)[0]>0)
{
  ChinaValues_Main   =["1"  ,"2"     ,"3"      ,"4"     ,"5"      ,"6"      ,"7"     ,"8"      ,"9"     ,"10"    ,"11"     ,"12"    ,"13"     ,"14"     ,"15"     ,"16"     ,"17"     ,"18"    ,"19"     ,"20"     ,"21"      ,"22"      ,"23"     ,"24"      ,"25"    ,"26"      ,"27"     ];
  ChinaSizes_Main    =[12.45,13.26   ,13.67    ,14.07   ,14.27    ,14.68    ,14.88   ,15.29    ,15.7    ,16.1    ,16.51    ,16.71   ,16.92    ,17.32    ,17.73    ,18.14    ,18.54    ,18.95   ,19.35    ,19.76    ,19.96     ,20.17     ,20.57    ,20.98     ,21.39   ,21.79     ,22.2     ];
  ring(ChinaSizes_Main[search([str(sizeValue)],ChinaValues_Main)[0]]);
}

else if (search([Country],Japan_Countries)[0]>0)
{
  JapanSizes_All    =[12.37,13.21   ,13.61    ,14.05   ,14.36    ,14.56    ,14.86    ,15.27    ,15.7     ,16       ,16.51   ,16.92    ,17.35    ,17.75    ,18.19    ,18.53   ,18.89   ,19.41    ,19.84   ,20.02    ,19.96     ,20.68    ,21.08    ,21.49    ,21.89    ,22.33     ];
  JapanValues_All   =["1"  ,"2"     ,"3"      ,"4"     ,"5"      ,"6"      ,"7"      ,"8"      ,"9"      ,"10"     ,"12"    ,"13"     ,"14"     ,"15"     ,"16"    ,"17"     ,"18"    ,"19"     ,"20"     ,"21"      ,"22"    ,"23"     ,"24"     ,"25"     ,"26"     ,"27"  ];
  //JapanSource="http://www.ringsizes.co/"
  ring(JapanSizes_All[search([str(sizeValue)],JapanValues_All)[0]]);
}

else
  ring(sizeValue);

//The fun logic is below, Just due to thingiverse standards can't leave all that alone in a seperate file.

module sweepAlongPath(step  = 3, end = 360, current = 0, radi)
{
  //the function:
  hull(){
    rotate([0,90+0,current])
      translate([ringheight*periods/2*cos(periods/2*current)*cos(periods/2*current),
          radi+thickness+thickness*sin(periods*2*current)])
        scale([ringheight,thickness,thickness])
           sphere();
    rotate([0,90,current+step])
      translate([ringheight*periods/2*cos(periods/2*(current+step))*cos(periods/2*(current+step)),
          radi+thickness+thickness*sin(periods*2*(current+step))])
        scale([ringheight,thickness,thickness])
          sphere();
  }
  if(current+step < end)
    sweepAlongPath(step = step, end = end, current = current + step, radi = radi);
}

module ring(diameter){
  color([.9,0,0])
    sweepAlongPath(radi = diameter/2, step = step);
  if(part){
    color([0,.9,0])
      rotate([0,0,360/periods/3])
        sweepAlongPath(radi = diameter/2, step = step);
    color([0,0,.9])
      rotate([0,0,-360/periods/3])
        sweepAlongPath(radi = diameter/2, step = step);
  }
}

```


[User]
I need an OpenSCAD design for a car pedal stop, specifically a small part that acts as a cushion or stopper for the brake or clutch pedal. I've seen a few designs online, and I'm basing mine on the general shape of the Toyota pedal stop. The goal is to make it customizable so I can adapt it to different car models.

The design is essentially a stack of cylinders with a tapered cone at the top. Let's break down the key features:

1.  **Base (Face):** This is a flat cylinder that sits flush against the pedal area. It's the widest part of the stop. We'll need parameters for its diameter (`face_d`) and height (`face_h`).

2.  **Shaft:** This is a thinner cylinder that extends up from the face. It connects the base to the bump. We need to control its diameter (`shaft_d`) and height (`shaft_h`).

3.  **Bump:** This is a very small cylinder that will act as a retention bump so that the stop doesn't fall out easily when installed. We will need parameters for its diameter (`bump_d`) and height (`bump_h`).

4.  **Cone:** This is a truncated cone at the very top of the stop. It serves as the actual contact point against the car frame and compresses slightly to cushion the pedal impact. We need to control its height (`cone_h`), the diameter of the base of the cone where it connects to the bump (`bump_d` which should use the value from the bump), and diameter at the tip (`cone_end_d`).

I'd like all dimensions to be parametric so I can customize these parameters for my own vehicle, or potentially others in the future. It should be a single file for now. Please make sure the code has a decent level of resolution by using `$fn = 50;` for curved parts.

Could you generate the OpenSCAD code for this design?

[Assistant]
toyota_pedal_stop_TPU_smaller.scad:
```
// Honda Pedal Stop

// Increase resolution
$fn=50;

// Variables
face_d = 7;
face_h = 3;
shaft_d = 3;
shaft_h = 3.5;
bump_d = 3.2;
bump_h = 1;
cone_h = 3;
cone_end_d = 1.5;

// Face
cylinder(h=face_h,r=face_d);

// Shaft
translate([0,0,face_h]) cylinder(h=shaft_h,r=shaft_d);

// Bump
translate([0,0,face_h+shaft_h]) cylinder(h=bump_h,r=bump_d);

// Cone
translate([0,0,(face_h+shaft_h+bump_h)]) cylinder(h=cone_h,r1=bump_d,r2=cone_end_d);

```


[User]
Okay, I'm looking to create a flexible ladder-building system in OpenSCAD, and I like the general approach of the `LadderMakerCylinder.scad` file I'm providing. I need the system to handle a few things that the provided file doesn't.

First, I want to be able to create ladders of different styles, not just the basic cylinder rung ladder. Specifically, I need options to create ladders with *rectangular* rungs and *flat* rungs, in addition to the current *cylindrical* rungs. Each of these should be separately configurable by a user.

Second, I need more control over the ladder rails. I want to be able to specify whether the rails are *cylindrical*, *rectangular* or *flat*, similar to how I can choose rung type. For both rails and rungs I also want to specify an x, y, and z dimension separately. The user needs to be able to choose to have the rails be different shapes.

Third, I need to add mounting options beyond the connector mentioned in the text and the rod end in the link.  I want to have two new end cap options in addition to the existing ones: a *flat cap* for resting the ladder on a surface and a *threaded cap* for screwing the ladder into a mating object. I want to be able to specify the shape and dimensions of these caps like I do the rungs and rails. The flat cap should use a user-specified thickness, as well as x and y dimensions. The thread cap should have a user-specified thread diameter and length, as well as an x and y size for the base. The user also needs to be able to choose whether a connector is present, and what its length and outer dimension are, in case a connector is required. The connector should be able to extend *both* from rails.

Fourth, I want to be able to specify that some rungs are different dimensions or shapes from others, so I'll need a way to customize individual rung dimensions. I think it would be best if I could specify these as lists.

Finally, all of these components should be easily configurable using variables, and I would like to use the MCAD library if possible to simplify parameter configuration, though I can live without it. I'm expecting a main file for the core ladder creation and a separate file with module definitions for different rung types, rail types and end cap types to keep the code manageable. Also, I would like you to include documentation in the code about what the different variables do.

I've attached the `LadderMakerCylinder.scad` file as a starting point for reference, but I want a more advanced version.

[Assistant]
LadderMakerCylinder.scad:
```

// LadderMaker  v1.0    Cylinder Version    BMB
// Simple ladder (or ladder shaped) maker script.

// Usage: 1) Set desired user values below, 2) Render with F6,
// 3) Export to STL, 4) Slice and print.
// NOTE:  This script has no logic to protect you from putting in crazy
//        settings.  But if the render looks good it should print fine.

// ***** User Render Settings
$fn = 30;         // Minimum Angle (number of fragments when rendering, probably don't need to change)
lHeight = 80;     // Ladder Height mm (end-to-end)
lWidth = 20;      // Ladder Width mm (oc-to-oc)
lRungs = 6;       // Number of Rungs
lRadius = 2;      // Ladder Radius mm  (remember it's radius not diameter!)
// ***** End User Settings

gap = lHeight / (lRungs + 1);
echo("Rung Spacing: ", gap);
translate([0,0,lRadius]) {
  rotate(a=90,v=[0,1,0]) {
    cylinder(h=lHeight,r=lRadius);
      translate([0,lWidth,0]) {
        cylinder(h=lHeight,r=lRadius);
      }

    for(a=[gap:gap:lHeight-gap/2]) {
      rotate(a=90,v=[1,0,0]) {
        translate([0,a,-1*(lWidth)]) {
          echo("Rung: ", a);
          cylinder(h=lWidth,r=lRadius);
        }
      }
    }
  }
}

```


[User]
Hi, I'm looking to design a parametric braided bracelet in OpenSCAD. I've seen some examples, but I'd like to have something I can easily customize.

Here's what I'm picturing:

*   **Basic Shape:** The bracelet should be based on multiple strands that twist around each other in a helix shape. I want to control the overall width and length of the bracelet as if it were laid flat on a table, so probably like, the major and minor axis of an ellipse or something.
*   **Number of Strands:** I need to be able to specify how many strands are used in the braid. Probably between 1 and 7 strands.
*   **Strand Thickness and Height:** I need to be able to adjust both the thickness of each strand, and the overall height of the bracelet (how much it "sticks up" from the wrist).
*   **Twist Control:** I'd like to control the number of twists or "periods" in the bracelet, so I can make it more or less tightly wound.
*   **Visualization:** It would be really cool to have a feature where I can preview just a single strand or a subset of strands, in different colors, so I can see exactly how the braid is constructed.
*   **Smoothness:** It should look fairly smooth, not blocky.

Could you generate a parametric OpenSCAD file or files that can achieve this? No specific libraries are required, but it would be great if you could design it with some modularity and clear commenting.

[Assistant]
BraidedBracelet.scad:
```
/* [Ring Maker] */
// this uses a lot of hull commands, and thus takes a while to load.

//bare in mind that printers often print weird, so it might scaled in your slicer or cleaned up

//BEGIN CUSTOMIZER VARIABLES
/*[Sizing]*/
//in MM
wrist_width = 75;
//in MM
wrist_length = 50;
// Which one would you like to see?// Which one would you like to see?
part = 0; // [0:wholeRing,1:red strands, 2:green strand, 3:blue strand]
/* [Ring Options] */
//work in progress
braceletHeight=3;
//ditto
thickness=2;//[1:0.5:10]
periods = 8;
//odd numbers look far better.
numStrands = 3;//[1:7]
//higher step takes more time but looks less blocky.
step = 5;//[.5:.5:20]
$fn=9;
/*[Extras]*/
//END CUSTOMIZER VARIABLES

bracelet(wrist_width, wrist_length);

//The fun logic is below, Just due to thingiverse standards can't leave all that alone in a seperate file.

module sweepAlongPath(step  = 3, end = 360, current = 0, rMaj, rMin, tweak = 0){
  //this makes a sweep using a method of paired hull commands.
  //planning on eventually replacing the spheres with small cylinders to decrease the time it takes to render, just more math than I have time to do at the moment.
  color([1*current/step%2,0,0])
  hull(){
    rotate([0,90+0,current])
      translate([braceletHeight*(numStrands-.5*(numStrands-1)/2)*cos(periods/2*(current+tweak))*cos(periods/2*(current+tweak)),
          sqrt(pow(sin(current)*rMaj,2) + pow(cos(current)*rMin,2))+(numStrands-1)/3*(thickness+thickness*sin(periods*2*(current+tweak)))])
        scale([braceletHeight,thickness,thickness])
           cylinder(.01,1,center=true);
    rotate([0,90,current+step])
      translate([braceletHeight*(numStrands-.5*(numStrands-1)/2)*cos(periods/2*(current+step+tweak))*cos(periods/2*(current+step+tweak)),
          sqrt(pow(sin(current+step)*rMaj,2) + pow(cos(current+step)*rMin,2)) +(numStrands-1)/3*(thickness+thickness*sin(periods*2*(current+step+tweak)))])
        scale([braceletHeight,thickness,thickness])
          cylinder(.01,1,center=true);
  }
  if(current+step < end)
    sweepAlongPath(step = step, end = end, current = current + step, rMaj = rMaj, rMin =  rMin, tweak = tweak);
}

module bracelet(majorAxis, minorAxis){
  if(part == 0){
    color([.9,0,0])
      sweepAlongPath(rMaj = majorAxis, rMin =  minorAxis, step = step);
    for(i = [2:numStrands]){
      color([0,.9*floor((i+1)%4/2),.9*floor((i+3)%4/2)])
        sweepAlongPath(rMaj = majorAxis, rMin =  minorAxis, step = step, tweak = 360/numStrands/periods*floor(i/2)*(1-(i%2)*2));
    }
  }
  else if(part == 1){
    color([.9,0,0])
      sweepAlongPath(rMaj = majorAxis, rMin =  minorAxis, step = step);
  }
  else if(part == 2){
    for(i = [2:2:numStrands]){
      color([0,.9*floor((i+1)%4/2),.9*floor((i+3)%4/2)])
        sweepAlongPath(rMaj = majorAxis, rMin =  minorAxis, step = step, tweak = 360/numStrands/periods*floor(i/2)*(1-(i%2)*2));
    }
  }
  else if(part == 3){
    for(i = [3:2:numStrands]){
      color([0,.9*floor((i+1)%4/2),.9*floor((i+3)%4/2)])
        sweepAlongPath(rMaj = majorAxis, rMin =  minorAxis, step = step, tweak = 360/numStrands/periods*floor(i/2)*(1-(i%2)*2));
    }
  }
}

```


[User]
Hey, I'm looking for an OpenSCAD design for a customizable box, specifically to hold a bunch of small, rectangular items. I've seen a design similar to what I want (I've attached it for reference), but I need it to be truly parametric, letting me easily adjust not just the size of the box, but also the layout of the internal compartments.

Essentially, I want to specify:
*   The dimensions of each item that will go into the box (width, length, and height).
*   How many rows and columns of these items I want the box to hold.
*   The thickness of the box walls, the lid walls, and the internal dividers.
*   The overall height of the box, possibly as a percentage of the item's height so I can have items stick up slightly.
*   The height of the dividers, possibly as a percentage of the box's height (to save on material).
*   Tolerances for the lid fit (width and length).
*   Whether to generate a box, a lid, or both, and whether to include text on the lid.
*   The text to put on the lid.

The box and lid should have rounded corners - something that looks like it could be produced by the `roundedRect` module in the reference design. I'm not interested in the hard-coded text of the example; it should be a completely user-defined string.

I would like the design to be flexible enough to generate just the box, just the lid, or both; and likewise, I can turn the label on and off. It should be possible to change all of those on demand via the OpenSCAD Customizer.

I'd like it to be as clean and efficient as possible, so no unnecessary dependencies. I'm okay with it having no dependencies as long as the needed functionality is there.

[Assistant]
ResMedP10Box.scad:
```
/*
* CPAP ResMed AirFit P10 Nasal Pillow Masks Case
*
*   Author: Bryan Smith - bryan.smith.dev@gmail.com
*   Created Date: 1/25/17
*   Updated Date: 1/25/17
*   Version: 1.1
*
*
*  Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
*       (https://creativecommons.org/licenses/by-nc-sa/3.0/legalcode)
*/

///////////////////////////////////////////////////////////////////
//Customize the box. Sizes are in millimeters
///////////////////////////////////////////////////////////////////

//Do you want a lid to be generated?
generateLid=1; //[1:true,0:false]

//Do you want the box to be generated?
generateBox=1; //[1:true,0:false]

//Do you want the text on the lid to be generated?
generateText=1; //[1:true,0:false]

//Text on the lid.
lidLabel="ResMed AirFit P10";

//What is the height of the item to be placed in the holes in mm?
itemHeight=45;

//What is the width of the item to be placed in the holes in mm?
itemWidth=56;

//What is the length of the item to be placed in the holes in mm?
itemLength=32.7;

//Adds spacing to the width fit of the lid to help account for shrinking, printer accuracy, and different materials. (My printer FlashForge Creator Pro can use a tolerence of 0 for flexible material like TPU, but needs to add some space for rigid materials like ABS so that the lid will actually go down on the box.)
lidWidthTolerence=0.4;

//Adds spacing to the length fit of the lid to help account for shrinking, printer accuracy, and different materials. (My printer FlashForge Creator Pro can use a tolerence of 0 for flexible material like TPU, but needs to add some space for rigid materials like ABS so that the lid will actually go down on the box.)
lidLengthTolerence=0.4;

//How many rows of items?
rows=2;

//How many columns of items?
columns=3;

//The thickness of the outside lid walls.
lidWallWidth=1.8;

//The thickness of the outside box walls.
wallWidth=1.8;

//The thickness of the dividers.
dividerWidth=1.8;

//Box height as compared to item height. Allows the items to stick up higher than the box to help ease getting them out.
boxHeightPercentage=1.0; //[0.05:0.01:1.0]

//Divider height as compared to box height. This allows inset dividers to save material.
dividerHeightPercentage=0.75; //[0:0.01:1.0]

///////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////
/* [Hidden] */
circleRes=150;

//Calculated Box Sizes. Do not change.
boxWidth=max((wallWidth*2)+(columns*itemWidth)+((columns-1)*dividerWidth),1);
boxLength=max((wallWidth*2)+(rows*itemLength)+((rows-1)*dividerWidth),1);
boxFloorThickness=max(wallWidth*2,0.1);
boxHeight=max(itemHeight*boxHeightPercentage,1);
dividerHeight=boxHeight*dividerHeightPercentage;
lidWidth=boxWidth+(lidWallWidth*2)+(lidWidthTolerence*2);
lidLength=boxLength+(lidWallWidth*2)+(lidLengthTolerence*2);
lidHeight=(itemHeight-boxHeight)+30;

///////////////////////////////////////////////////////////////////
// Box
///////////////////////////////////////////////////////////////////
if (generateBox)
    difference(){
        difference(){
            boxProfile();
            itemCutProfile();
        }
        boxCutProfile();
    }

///////////////////////////////////////////////////////////////////
// Lid
///////////////////////////////////////////////////////////////////
if (generateLid)
    difference() {
        difference(){
            lidProfile();
            lidCutProfile();
        }
       if (generateText){ rotate([0,180,0]) color("red") translate([-lidWidth/2,lidLength*1.6,-0.59]) linear_extrude(height = 0.6) text(lidLabel,lidWidth/12, font="Times New Roman:style=Regular",valign="center",halign="center");}
    }

module boxProfile()
{
    translate([boxWidth/2,boxLength/2,0])
    roundedRect([boxWidth, boxLength,boxHeight+boxFloorThickness],10);
}

module boxCutProfile()
{
    translate([boxWidth/2,boxLength/2,dividerHeight+boxFloorThickness])
    roundedRect([boxWidth-(wallWidth*2), boxLength-(wallWidth*2),boxHeight+0.1],10);
}

module lidProfile()
{
    translate([lidWidth/2,lidLength*1.6,0])
    roundedRect([lidWidth, lidLength,lidHeight],10);
}

module lidCutProfile()
{
    translate([lidWidth/2,lidLength*1.6,boxFloorThickness])
    roundedRect([boxWidth+(lidWidthTolerence*2), boxLength+(lidLengthTolerence*2),lidHeight+0.1],10);
}

module itemProfile()
{
    roundedRect([itemWidth,itemLength,itemHeight+0.1],10);
}

module itemCutProfile()
{
    translate([itemWidth/2,itemLength/2,0])
    for (r = [ 0 : 1 : rows-1 ])
        for (c = [ 0 : 1 : columns-1 ])
            translate([((itemWidth)*c)+wallWidth+(dividerWidth*c), ((itemLength)*r)+wallWidth+(dividerWidth*r), boxFloorThickness])
            itemProfile();
}

module roundedRect(size, radius)
{
    x = size[0]-radius;
    y = size[1]-radius;
    z = size[2];

    if (z != 0) linear_extrude(height=z)
    hull()
    {
        translate([(-x/2)+(radius/2), (-y/2)+(radius/2), 0]) circle(r=radius, $fn=circleRes);
        translate([(x/2)-(radius/2), (-y/2)+(radius/2), 0]) circle(r=radius, $fn=circleRes);
        translate([(-x/2)+(radius/2), (y/2)-(radius/2), 0]) circle(r=radius, $fn=circleRes);
        translate([(x/2)-(radius/2), (y/2)-(radius/2), 0]) circle(r=radius, $fn=circleRes);
    }
}
```


[User]
I'd like to create a stereographic projection visualization in OpenSCAD, similar to the one on Thingiverse. Basically, it involves projecting a grid onto a sphere. I want to be able to customize the number of rows/columns in the grid, the width of each block in the grid, and the width of the lines that make up the grid. I'd also like to be able to optionally include a black "shadow" of the grid directly underneath the projection.

Here are some specifics:

*   **Core Projection:** I need a module that handles the stereographic projection itself. This should create the curved grid lines on the sphere. The sphere's size should be automatically calculated based on the overall size of the grid. The module should take the total side length of the grid (including the line width) and the `fn` variable (resolution of the circle segments) as parameters.
*   **Grid Generation:** I'll need another module to create the flat grid itself. This module should take `rows` (number of rows/columns in the grid), `block_width` (width of each grid block), and `line_width` (width of the grid lines) as parameters.
*   **Optional Shadow:** Finally, I'd like the option to easily generate a black 2D shadow of the grid directly underneath the projected version. This shadow will need to be a separate object. It will also need to use the same `rows`, `block_width`, and `line_width` parameters used by the grid generation.
*   **Parameterization:** The design should be parametric, so I can easily change the number of rows, block widths, line widths, and toggle the shadow on or off from the main section of the code. I'd like a variable named `shadow` that can be either "YES" or "NO" to control whether the shadow is generated.

I don't think I'll need any external libraries for this. It seems like it can be done with OpenSCAD's built-in primitives and functions.

[Assistant]
stereographic_projection.scad:
```
rows = 8;
line_width = 15;
block_width = 50;
shadow = "YES"; // [YES, NO]
fn = 48;

module stereographic_projection(side_leng_shadow, fn) {
    $fn = fn;

    half_side_length = side_leng_shadow / 2;
    outer_sphere_r = half_side_length / 3;
    a = atan(sqrt(2) * half_side_length / (2 * outer_sphere_r));
    inner_sphere_r = outer_sphere_r * sin(a);

    intersection() {
        translate([0, 0, outer_sphere_r]) difference() {
            sphere(outer_sphere_r);
            sphere(outer_sphere_r / 2 + inner_sphere_r / 2);

            translate([0, 0, outer_sphere_r / 2])
                linear_extrude(outer_sphere_r)
                    circle(inner_sphere_r * sin(90 - a));
        }

        linear_extrude(outer_sphere_r * 2, scale = 0.01) children();
    }
}

module grid(rows, block_width, line_width) {
    half_side_length = (block_width * rows + line_width) / 2;

    translate([-half_side_length, -half_side_length])
        for(i = [0:rows]) {
            translate([0, i * block_width, 0])
                square([block_width * rows, line_width]);

            translate([i * block_width, 0, 0])
                square([line_width, block_width * rows + line_width]);
        }
}

stereographic_projection(block_width * rows + line_width, fn)
    grid(rows, block_width, line_width);

if(shadow == "YES") {
     color("black") grid(rows, block_width, line_width);
 }
```


[User]
I'm looking to create a parametric, customizable wall mount for tablets using OpenSCAD. I currently have one I've been using that works, but I'd like to be able to adjust it more easily. The idea is to have a mount that holds a tablet securely from the top, back, and bottom, with a side support on one edge.

Here are the dimensions I'd like to be able to control:

*   **`tablet_width`**: The overall width of the tablet.
*   **`tablet_depth`**: The depth of the tablet, measured from front to back.
*   **`tablet_thickness`**: The thickness of the tablet itself.
*   **`wall_thickness`**: The thickness of the mount's walls.
*   **`screw_head_diameter`**: The diameter of the screw head.
*   **`screw_thread_diameter`**: The diameter of the screw thread.

The mount should have these features:

1.  **Top Lip:** A lip that extends forward from the wall to hold the top edge of the tablet, with a thickness equal to `wall_thickness` and a depth of `tablet_depth / 4`.
2.  **Back Plate:** A plate that sits behind the tablet, with a thickness equal to `wall_thickness`, and that extends back from the wall a distance of `tablet_depth / 2 + wall_thickness`. It should have a recessed hole for a screw (or two holes if that makes more sense, depending on the design you come up with).
3.  **Bottom Support:** A base that cradles the bottom of the tablet, with a thickness equal to `wall_thickness`, and that extends forward from the wall the same depth as the backplate.
4.  **Side Support:** A wall that goes up along one side of the tablet, with a thickness of `wall_thickness` and a height of `tablet_depth`.
5.  **Screw Mounting:** The screw holes/recesses for mounting to the wall need to account for a screw head and a threaded section as specified in the parameters above.

I would also like the design to be parametric, so that the user can easily adjust those six variables. I am not really familiar with OpenSCAD so I'm looking for an easy to use file that I can just change those values.

[Assistant]
tabletmount_universal.scad:
```
$fn = 60;

//length(1/4th of tablet width)
x1 = 30;
//width(from edge to bezzle)
x2 = 20;
//thickness of tablet
x3 = 14;

//walls thinkness(default4)
x4 = 4;

//screw (50/50 for head and thread /x4 walls
//head
xd1 = 7.5;
//thread
xd2 = 4;

module screw(){
//screw head
union(){
translate([0,0,x4/2/2])
cylinder(h = x4/2, d1 = xd1, d2 = xd1,
    center = true);
//screw thread
translate([0,0,-x4/2/2])
cylinder(h = x4/2, d1 = xd2, d2 = xd2, center = true);}
}
//top
rotate([0,0,0])
translate([0,-x3/2+-x4/2,0])
cube([x2+x4,x4,x1], center=true);

//back
difference(){
rotate([0,0,0])
translate([0,x3/2+x4/2,x1/2])
cube([x2+x4,x4,x1*2], center=true);
rotate([90,0,0])
//hole
translate([0,x1,-x3/2-x4/2])
#screw();}

//bottom
rotate([0,0,0])
translate([0,0,-x1/2+-x4/2])
cube([x2+x4,x3+x4*2,x4], center=true);

//side
rotate([0,0,0])
translate([-x2/2+x4+-x4,0,0])
cube([x4,x3,x1], center=true);

```


[User]
Hey, I'm looking for an OpenSCAD design for a keyboard stand. I have multiple keyboards I want to store vertically, and I'd like the stand to have a sturdy base and enough space between the keyboards. I'd like to be able to stack two keyboards minimum, but it needs to be configurable for more.

The stand should have a vertical support structure on either side that will keep the keyboards separate. Also, there should be space under the keyboard shelves for a couple of things. I've attached some pictures of the kind of stand I'm thinking of. I need the design to be parametric, so that I can easily change:

*   The number of keyboards the stand can hold.
*   The vertical distance between the keyboards.
*   The thickness of the keyboard itself (this can vary based on the manufacturer)
*   The flange size on each "shelf"
*   The thickness of the support structure itself.

I want to be able to print this on a 3D printer, so I'd like it to be reasonably durable.

I'd like to be able to easily modify all these parameters, and I'd rather not need to adjust each component individually, so it'd be great if that could be easily modified from the beginning of the file.

Thanks in advance for your help!

[Assistant]
keyboard_stand.scad:
```
num_keyboards = 2;		// [1:1:20]
keyboard_to_keyboard = 24;	// [8:100]
keyboard_thickness = 12;	// [5:100]
flange = 4;			// [1:50]
thickness = 10;			// [3:50]

/* [Hidden] */
$fa = 6;
$fs = 0.2;
e = 0.01;

for (side=[0,1]) translate([side * 15, 0, side*thickness]) rotate([0, -90+side*180, 0])
difference()
{
	minkowski()
	{
		difference()
		{
			minkowski()
			{
				difference()
				{
					ySz = (num_keyboards - 1) * keyboard_to_keyboard + keyboard_thickness + 16;
					cube([thickness, ySz, 30]);
					translate([-e, ySz-keyboard_thickness-2, max(e, flange - 3.5)])cube([thickness+2*e, ySz, 30]);
				}
				rotate([0, 90, 0]) cylinder(e, r=5);
			}

			for (keyb = [0:num_keyboards-1])
			translate([-10, 17 + keyb * keyboard_to_keyboard, 0]) rotate([5, 0, 0]) union()
			{
				cube([200, keyboard_thickness, 100]);
				if (keyb < num_keyboards-1)
					translate([0, keyboard_thickness-e, flange]) cube([200, keyboard_thickness/2, 100]);
			}

		}

		rotate([0, 90, 0]) cylinder(e, r=1);
	}

	translate([-10, 5.5, 5.5]) rotate([0, 90, 0]) cylinder(200, d=8.2);
}

```


[User]
Hey, I'm looking to get a custom OpenSCAD design for a reamer handle, and I'd like it to be parametric so I can easily change it for different drill bits. I found this old design online, and it's pretty much exactly what I'm trying to make, but I want to have a clean file, made from scratch.

Here's a breakdown of the features I need, mimicking the design I found:

*   **Drill Bit Bore:** I need to be able to specify the diameter of the drill bit shaft that the handle will hold.
*   **Clamping Nuts:** I need to be able to choose how many M4 square nuts to use for clamping the drill bit (typically 2, 3, or 4). The design needs to include cutouts that correctly fit the square nuts and grub screws.
*   **Handle Diameter:** I want to set the handle's overall diameter to make it comfortable to grip.
*   **Handle Length:** The length of the handle needs to be adjustable.
*   **Drill Size Display:** A feature to display the drill bit's diameter on the base of the handle, ideally an option to turn it on or off.
*   **Grips:** I need the handle to have recessed grips for better hold, spaced evenly around the circumference.
*   **Torus Subtraction:**  A torus-shaped cut out should be subtracted from the handle, as in the linked design.
*   **Beveled Edges:** The top and bottom edges of the handle should have bevels or rounded edges to make it look and feel nicer.
*   **General:** The design should be fully parametric to adjust to the dimensions described above.

It should be using a resolution of $fn = 100, but that doesn't need to be a parameter. All dimensions should be in millimeters.

I also don't want any kind of 'fixed' tolerances. All tolerances should be adjustable parameters, if the design uses any.

I think the OpenSCAD code should be pretty straightforward. I don't think I need to use any libraries to make it, but if you think it would help let me know.

Let me know if you need any more information.

[Assistant]
reamer.scad:
```
// Hole Reamer by Gregory L Holloway.
// @greg_the_maker
// 2017 - CC-BY-SA | https://creativecommons.org/licenses/by-sa/4.0/
// All measurements are in mm.
// https://www.thingiverse.com/thing:2072163
// Set the Drill Bit Shaft Diameter.
// Specify the number of clamping nuts.
// Choose the handle width.
// Pick the handle length.
// Display the drill size in the base of the handle?

/* [Global] */

// Specify the Drill Size in mm.
Drill_Bore = 6;

// How many nuts to clamp the bit?
Clamping_Nuts = 2; // [2,3,4]

// Increase the width for larger drill bits.
Handle_Diameter = 30;

// Increase the length for larger drill bits.
Handle_Length = 80;

// Display the drill's bore on the base on the handle?
Show_Size = "yes" ; // [yes,no]

/* [Hidden] */

reamer(Drill_Bore,Clamping_Nuts,Handle_Diameter,Handle_Length,Show_Size);

module reamer (shaft,nuts,width,length,label)
{
    // resolution
    $fn = 100; // Does not effect the STL

    // drill configuration
    drillradius = shaft / 2;
    drilldepth = 20 + (drillradius * 4); // how deep to make the hole in the handle
    drillcompensation = 0.25; // extra space around the shaft to help with fitment

    // handle configuration
    numberofnuts = nuts; // how many M4 square nuts
    handleradius = width / 2; // how thick to make the handle
    handlelength = length; // length of the handle
    grips = 8; // number of grips to cut into the handle
    gripsradius = handleradius / 5; // radius of the grips

    // start objects
    difference() {
      // build handle
        union() {
        // top bevel
        rotate_extrude (convexity = 10)
        translate ([handleradius - 5, handlelength - 5, 0])
        circle (r = 5);
        translate ([0, 0, handlelength - 5 ])
        cylinder (r = handleradius - 5, h = 5);

        // handle body
        translate ([0, 0, 5])
        cylinder (h = handlelength - 10, r = handleradius);

        // bottom bevel
        rotate_extrude (convexity = 10)
        translate ([handleradius - 5, 5, 0])
        circle (r = 5);
        translate ([0, 0, 0 ])
        cylinder (r = handleradius - 5, h = 5);
        }

    // drill hole
    translate ([0, 0, handlelength - drilldepth])
    cylinder (h = drilldepth + 1, r = drillradius + drillcompensation);

    // torus subtraction
    rotate_extrude (convexity = 10, $fn = 100)
    translate ([handleradius + 5, handlelength - 22.5, 0])
    circle (r = handleradius / 2, $fn = 100);

    // emboss text
    if (label=="yes") {
        if (shaft < 10) {
            translate ([-4.5, 5.5,0])
            rotate ([180,0,0])
            linear_extrude(height = 3, center = true){
            text(text = str(shaft), font = "Arial", size = 12);
            }
        }

        if (shaft > 9) {
            translate ([-8.5, 5,0])
            rotate ([180,0,0])
            linear_extrude(height = 3, center = true){
            text(text = str(shaft), font = "Arial", size = 10);
            }
        }
    }

    // cut grips
    for ( i = [0:grips] ) {
        rotate( i*360 / grips, [0, 0, grips])
        translate( [0, handleradius, -5] )
        cylinder (r = gripsradius, h = handlelength + 10);
        }

    // add nut clamps
    for ( i = [0:nuts] ) {
        rotate( i*360/nuts, [0, 0, nuts])
        // nuts
        translate( [-3.750, (drillradius + 2.5), (handlelength - 17)] )
        cube (size = [7.5, 3, 25]);
        }

    for ( i = [0:nuts] ) {
        rotate( i*360/nuts, [0, 0, nuts])
        //grubs
        rotate ([0,90,90])
        translate( [-(handlelength - 12.75), 0, 0] )
        cylinder (r = 2.25, h = handleradius *2);
        }

    }
}
```


[User]
I'm looking to create a parametric design for a 3D-printable end cap and spool rest that will attach to a standard 20x20 aluminum extrusion. I've seen a design that does this, but I'd like to generate it with OpenSCAD so I can fully control the parameters.

The end cap needs to fit over the end of the extrusion, and it should have a rounded corner where the top faces meet. The main part of the end cap will extend out beyond the extrusion. There also needs to be a 'spool rest' feature that extends upwards and out from the end cap, providing a curved surface for a filament spool to sit on.

I need the design to be fully parametric. Here's a breakdown of the parameters I'm thinking of:

*   **Extrusion Dimensions:**
    *   `extrusion_width`: The width of the square extrusion (e.g., 20 for a 20x20 extrusion).
    *   `slot_width`: The width of the T-slot opening on the extrusion.
    *   `slot_thickness`: The thickness of the material that makes the T-slot opening.
    *   `t_width`: The width of the T part of the T-slot.
    *   `t_depth`: The depth of the T part of the T-slot.
    *   `trap_bot_width`: The width of the bottom part of the trapezoidal section of the T-slot.
    *   `trap_top_width`: The width of the top part of the trapezoidal section of the T-slot.
    *   `trap_depth`: The depth of the trapezoidal section of the T-slot.
    *   `undersize`: A value to slightly reduce the size of the T-slot feature for a good fit.

*   **End Cap Dimensions:**
    *   `cover_thickness`: The thickness of the end cap.
    *   `corner_rounding`: The radius of the rounded corners on the end cap.
    *   `hole_size`: Optional: a diameter for a hole in the center of the end cap. 0 means no hole.
    *   `tab_height`: The height of the tabs that go into the extrusion T-slot.

*   **Spool Rest Dimensions:**
    *   `spool_rest_length`: The length of the flat glide area where the spool sits.
    *  `corner_mount_clearance`: How far away the spool rest's corner is from the corner of the extrusion.
    *   `spool_endstop_height`: The height of the endstop part of the spool rest, above the top of the extrusion.
    *  `adjust_spool_rest_radius`: how much to adjust the radious of the spool rest, to match the width of the end-stop.

I envision the design using a T-slot feature to securely attach to the extrusion. There should be tabs that fit into the T-slot on all four sides. The spool rest should be created by subtracting a circle (or segment of a circle) from the extruded part that is above the extrusion, to create the curved section.

Could you generate the OpenSCAD files for this design? I think that the design would benefit from the BOSL2 library, so please include that as well. I would also like to be able to move the spool rest to a different location, by changing a variable. I think that this could be done by allowing `spool_rest_offset_angle` to move the spool rest to a different side of the extrusion, so a value of `0` would leave the spool rest on the positive X side, a value of `90` would move the spool rest to the positive Y side, `180` would move the spool rest to the negative X side, and a value of `270` would move the spool rest to the negative Y side. Also, if possible, could you make it easy to print multiple spool rests on a single build plate? This could be done with a `quantity` variable.

[Assistant]
2020_extrusion_spool_rest.scad:
```
// adopted from http://www.thingiverse.com/thing:43756

/* [Extrusion] */
extrusion_width=20; // width of the exstrusion
slot_width=6; // width od the slot in the rail
slot_thickness=1; // material thickness
t_width=6; //  width of the slot
t_depth=1;
trap_bot_width=10; // width of the bottom of the slot
trap_top_width=5; // width of the top of the slot
trap_depth=4; // depth of the slot

/* [End Cap] */
cover_thickness=2; // desired thickness of the endstop
corner_rounding=2; // radius of the corner on endstop

hole_size=0; // set hole size > 0, i.e. = 5 if you want a hole in the center of the end-stop

tab_height=5; // height/depth of the tabs

undersize=0; //this may need be adjusted for a good fit

/* [Spool Rest] */
spool_rest_length=80; // length of the top glide area for the filament spool
corner_mount_clearance=21; // add clearing for any corner hardware
spool_endstop_height=8; // height of the endstop (including the hight of the spool glide area)
adjust_spool_rest_radius=1.7; // change the radious of the spool rest, to match the width of the end-stop

difference() {
    union() {
        union() {
            for (a=[0:3])
                rotate([0,0,90*a])
                    translate([0,-extrusion_width/2,0])
                        if (a==3)
                            t_slot(spool_rest_length - corner_mount_clearance);
                        else
                            t_slot(tab_height);
            translate([-extrusion_width/2+corner_rounding-spool_endstop_height-adjust_spool_rest_radius, -extrusion_width/2+corner_rounding,0])
                minkowski() {
                    cube([extrusion_width-corner_rounding*2+spool_endstop_height+adjust_spool_rest_radius,extrusion_width-corner_rounding*2,cover_thickness-1]);
                    cylinder(r=corner_rounding, h=1, $fn=16);
                }
        }

        linear_extrude(height=spool_rest_length+cover_thickness) {
            // calculate the center offset
            radius=extrusion_width/2;
            translate([-spool_endstop_height/2,0,0]) {
                difference() {
                    circle(radius+adjust_spool_rest_radius, $fa=4);
                    translate([-radius+spool_endstop_height/2,-radius*5,0])
                        square(size=[radius*10,radius*10], center=false);
                }
            }
        }
    }

    // uncomment line below to add a center hole in the end cap
    if (hole_size>0)
        cylinder(r=hole_size/2, h=cover_thickness*4, center=true);
}

module t_slot(zheight=tab_height) {
	translate([-slot_width/2+undersize/2,0,0])
		cube([slot_width-undersize, slot_thickness+t_depth,zheight]);
	translate([-t_width/2+undersize/2,slot_thickness,0])
		cube([t_width-undersize,t_depth-undersize+0.01,zheight]);
	translate([0,slot_thickness+t_depth-undersize,0])
		linear_extrude(height=zheight)
			trapezoid(bottom=trap_bot_width-undersize, top=trap_top_width-undersize, height=trap_depth-undersize);
}

module trapezoid(bottom=10, top=5, height=2)
{
	polygon(points=[[-bottom/2,0],[bottom/2,0],[top/2,height],[-top/2,height]]);
}

module topCylinder() {
  //  intersection() {
  //      circle(r=(spool_hole_diameter - spool_rest_diameter_undersize)/2);
        translate(-(extrusion_width/2),extrusion_width/2,0);
            square(size=[extrusion_width,extrusion_width/2], center=false);
  //  }
}
```


[User]
I'd like to design a customizable Futurama-themed rocket sign or keychain, and I need some help with the OpenSCAD code.

The basic idea is to have a rocket shape with some text in the Futurama Alien Alphabet on top of it. I want the text to be customizable, as well as the size of the text. I also want to be able to choose to add a pinhole to make it easy to attach to a keychain. Also, I'd like to be able to choose the orientation of the rocket--facing left or right.

The rocket shape itself is based on Bezier curves. I've seen a library on Thingiverse called "Spline Library" (http://www.thingiverse.com/thing:8443) that does Bezier curves, and I think that would work. The rocket shape is essentially two layers of that same curve, slightly offset and scaled.

So, the main things I need to customize are:
- the text
- the text size
- whether to include a pinhole or not
- the orientation of the rocket (left or right)

I don't think I need any STL files, or the font file itself. I think I can download the font myself. Can you help me generate the OpenSCAD code?

[Assistant]
futurama_rocket.scad:
```
/*

Futurama Rocket with Alien text
Fernando Jerez 2017

Spline library: http://www.thingiverse.com/thing:8443

*/

/*
    Futurama rocket
    Fernando Jerez 2017
*/

////// Customization

// your text
my_text = "2017";

// Size of text
text_size = 18;

// Want a pinhole??
pinhole = "Yes"; // "Yes" or "No"
// Orientation of rocket/text
rocket_direction="Left"; // "Left" or "Right"

////// ROCKET CODE
joinfactor = 0.125;

gFocalPoint = [0,0];
gSteps = 10;
gHeight = 4;

linear_extrude(height=gHeight){
    text(my_text,size=text_size, font = "Futurama Alien Alphabet One", valign="center",halign="center");
}

if(rocket_direction=="Left") rocket();
if(rocket_direction=="Right") rotate([0,0,180]) rocket();

module rocket(){
    color("Orange"){
    difference(){
        union(){

            difference(){
                rocket1();
                translate([2,0,gHeight*0.5]) scale([0.9,0.85,1]) rocket2();
            }

            if(pinhole=="Yes") translate([-65,0,0]) cylinder(r=7,h=gHeight);
        }
        if(pinhole=="Yes") translate([-65,0,-1]) cylinder(r=3,h=gHeight+1.1);
    }

}
}
module rocket1(){
    BezQuadCurve( [[-70, 0],[-40,25],[10,25],[70,5]], [70,0], gSteps, gHeight);
    BezQuadCurve( [[-70, 0],[-40,-25],[10,-25],[70,-5]], [70,0], gSteps, gHeight);
    difference(){
    union(){

        BezQuadCurve( [[0, 0],[30,30],[70,30],[70,30]], [70,0], gSteps, gHeight);
        BezQuadCurve( [[0, 0],[30,-30],[70,-30],[70,-30]], [70,0], gSteps, gHeight);
    }
    translate([80,0,-0.1]) cylinder(r=30,h=gHeight+0.5,$fn=30);
    }

}

module rocket2(){
    BezQuadCurve( [[-70, 0],[-40,25],[10,25],[70,5]], [70,0], gSteps, gHeight);
    BezQuadCurve( [[-70, 0],[-40,-25],[10,-25],[70,-5]], [70,0], gSteps, gHeight);
    difference(){
    union(){

        BezQuadCurve( [[10, 0],[30,30],[70,30],[70,30]], [70,0], gSteps, gHeight);
        BezQuadCurve( [[10, 0],[30,-30],[70,-30],[70,-30]], [70,0], gSteps, gHeight);
    }
    translate([80,0,-0.1]) cylinder(r=34,h=gHeight+0.5,$fn=30);
    }

}

/////////// SPLINE LIBRARY

//=======================================
// Functions
//=======================================
function BEZ03(u) = pow((1-u), 3);
function BEZ13(u) = 3*u*(pow((1-u),2));
function BEZ23(u) = 3*(pow(u,2))*(1-u);
function BEZ33(u) = pow(u,3);

function PointAlongBez4(p0, p1, p2, p3, u) = [
	BEZ03(u)*p0[0]+BEZ13(u)*p1[0]+BEZ23(u)*p2[0]+BEZ33(u)*p3[0],
	BEZ03(u)*p0[1]+BEZ13(u)*p1[1]+BEZ23(u)*p2[1]+BEZ33(u)*p3[1]];

//=======================================
// Modules
//=======================================
// c - ControlPoints
module BezQuadCurve(c, focalPoint, steps=gSteps, height=gHeight)
{
	// Draw control points
	// Just comment this out when you're doing the real thing
    /*
	for(point=[0:3])
	{
		translate(c[point])
		color([1,0,0])
		cylinder(r=1, h=height+joinfactor);
	}
    */

	for(step = [steps:1])
	{
		linear_extrude(height = height, convexity = 10)
		polygon(
			points=[
				focalPoint,
				PointAlongBez4(c[0], c[1], c[2],c[3], step/steps),
				PointAlongBez4(c[0], c[1], c[2],c[3], (step-1)/steps)],
			paths=[[0,1,2,0]]
		);
	}
}

//==============================================
// Test functions
//==============================================
//PlotBEZ0(100);
//PlotBEZ1(100);
//PlotBEZ2(100);
//PlotBEZ3(100);
//PlotBez4Blending();

module PlotBEZ0(steps)
{
	cubeSize = 1;
	cubeHeight = steps;

	for (step=[0:steps])
	{
		translate([cubeSize*step, 0, 0])
		cube(size=[cubeSize, cubeSize, BEZ03(step/steps)*cubeHeight]);
	}
}

module PlotBEZ1(steps)
{
	cubeSize = 1;
	cubeHeight = steps;

	for (step=[0:steps])
	{
		translate([cubeSize*step, 0, 0])
		cube(size=[cubeSize, cubeSize, BEZ13(step/steps)*cubeHeight]);
	}
}

module PlotBEZ2(steps)
{
	cubeSize = 1;
	cubeHeight = steps;

	for (step=[0:steps])
	{
		translate([cubeSize*step, 0, 0])
		cube(size=[cubeSize, cubeSize, BEZ23(step/steps)*cubeHeight]);
	}
}

module PlotBEZ3(steps)
{
	cubeSize = 1;
	cubeHeight = steps;

	for (step=[0:steps])
	{
		translate([cubeSize*step, 0, 0])
		cube(size=[cubeSize, cubeSize, BEZ33(step/steps)*cubeHeight]);
	}
}

module PlotBez4Blending()
{
	sizing = 100;

	translate([0, 0, sizing + 10])
	PlotBEZ0(100);

	translate([sizing+10, 0, sizing + 10])
	PlotBEZ1(100);

	translate([0, 0, 0])
	PlotBEZ2(100);

	translate([sizing+10, 0, 0])
	PlotBEZ3(100);
}

```


[User]
Hey, I'm looking to design a customizable fidget spinner that looks like a ninja star or maybe a snowflake. I've seen a few designs out there, but I want something that lets me easily change the number of points and the type of weights I use.

Here's what I'm thinking:

*   **Number of Points:** I need to be able to set the number of points, anywhere from 3 to 6.
*   **Point Shape:** The points should be kind of triangular, but with rounded edges. I'd like to be able to control the ratio of the triangle's height to width - I'm thinking maybe a parameter called something like `yAspect` that I can set to a value between 1.3 and 2.1.
*   **Center Bearing:** It needs a central hole to hold a standard 608zz bearing. The dimensions for that are 22mm diameter and 7mm height.
*   **Weight Inserts:** I want to add weight to each point, and I want to be able to choose from a variety of options. These should be hex nuts, square nuts, or ball bearings. Here are the sizes I need support for (note that some are different standards for the same nominal size, such as M10 and M12):
    *   5/16" hex nut
    *   3/8" hex nut
    *   1/2" hex nut
    *   M8 hex nut
    *   M10 hex nut (16mm across flats - ISO 4032)
    *    M10 hex nut (17mm across flats - DIN 934)
    *   M12 hex nut (18mm across flats - ISO 4032)
    *   M12 hex nut (19mm across flats - DIN 934)
    *   M4 square nut
    *   5/16" ball bearing
    *   3/8" ball bearing
    *   1/2" ball bearing
    *   5/8" ball bearing
*   **Filleting:** I need the edges to be rounded - a fillet radius would be great. I'd like to be able to specify the fillet radius. Also the edges of the bearing hole should be filleted.
*   **Corner Holes:** Include some small holes between each of the points for aesthetic purposes. I need to be able to specify their diameter.
*    **Bolt Holes**: And some holes for small bolts on each arm. I think two on each.
*   **Thickness:** The whole thing should be about 4mm thick, except for the center bearing area which should be 7mm to match the bearing height.
*   **Customizable:** I want it to be parametric so I can easily change all of these variables.
*   **Units:** All measurements should be in millimeters.

I'm not too picky on the specific implementation as long as it's parametric and produces a printable model. I'd rather have multiple .scad files if that makes the design cleaner.  Could you generate the necessary OpenSCAD files for this, please? I do not have any library code and I need you to generate all files from scratch.

[Assistant]
ninja-star-2017-09-29.scad:
```
// ninja star hex spinner
// lucina
// 2017-09-29
// preview[view:south, tilt:top]

// the number of points for the star
points = 3;  //[3,4,5,6]
// the y to x aspect ratio for the star points
yAspect = 1.7;   //[1.3:0.1:2.1]
// the type of nut
whichWeight = "5/16 hex nut";   //[608 bearing, 5/16 hex nut, 3/8 hex nut, 1/2 hex nut, M8 hex nut, M10 16 hex nut, M10 17 hex nut, M12 18 hex nut, M12 19 hex nut, M4 square nut, 5/16 ball bearing, 3/8 ball bearing, 1/2 ball bearing, 5/8 ball bearing]
/* [Hidden] */
$fn = 60;
x = 0; y = 1; z = 2;
inch = 25.4;

bearing = [22, 22, 7]; //608 bearing
sae = [.577*inch, .5 * inch, 7]; // 5/16 hex nut
sae38 = [.650*inch,.562*inch, 7];	// 3/8
sae12 = [.866*inch, .75*inch, 7];	// 1/2
metric8 = [15, 13, 7];   // M8 hex nut
metric10_16 = [17.77, 16, 7];   // M10 16 hex nut
metric10_17 = [19.6, 17, 7];   // M10 17 hex nut
metric12_18 = [20.03, 18, 7];   // M12 18 hex nut
metric12_19 = [21.9, 19, 7];   // M12 19 hex nut
metric4sq = [7, 7, 3.2];
ball516 = [5/16*inch, 5/16*inch, 5/16*inch];
ball38 = [3/8*inch, 3/8*inch, 3/8*inch];
ball12 = [1/2*inch, 1/2*inch, 1/2*inch];
ball58 = [5/8*inch, 5/8*inch, 5/8*inch];
nut = (whichWeight == "608 bearing") ? bearing :
   (whichWeight == "5/16 hex nut") ? sae :
   (whichWeight == "3/8 hex nut") ? sae38 :
   (whichWeight == "1/2 hex nut") ? sae12 :
   (whichWeight == "M8 hex nut") ? metric8 :
   (whichWeight == "M10 16 hex nut") ? metric10_16 :
   (whichWeight == "M10 17 hex nut") ? metric10_17 :
   (whichWeight == "M12 18 hex nut") ? metric12_18 :
   (whichWeight == "M12 19 hex nut") ? metric12_19 :
   (whichWeight == "M4 square nut") ? metric4sq :
   (whichWeight == "5/16 ball bearing") ? ball516 :
   (whichWeight == "3/8 ball bearing") ? ball38 :
   (whichWeight == "1/2 ball bearing") ? ball12 : ball58;
echo(whichWeight, nut[x], nut[y], nut[z]);
resolution = (whichWeight == "5/16 hex nut") ? 6 :
(whichWeight == "3/8 hex nut") ? 6 :
(whichWeight == "1/2 hex nut") ? 6 :
(whichWeight == "M8 hex nut") ? 6 :
(whichWeight == "M10 16 hex nut") ? 6 :
(whichWeight == "M10 17 hex nut") ? 6 :
(whichWeight == "M12 18 hex nut") ? 6 :
(whichWeight == "M12 19 hex nut") ? 6 :
(whichWeight == "M4 square nut") ? 4 : 60;
echo("resolution=", resolution);
thick = 4;
filRad = 2;
space = 7.5;
cornerHole = 2 + (7-points) * 1.25;
yHoleOffset = points * 2 + 7;
//angleOffset = 4 + 9/yAspect;
xOffset = nut[x]+thick*2+space * yAspect;

module fcylinder(z, x, rad) {
   translate([0, 0, rad-z/2])
      minkowski() {
         cylinder(h=z-2*rad, d=x-2*rad);
         sphere(rad);
      }
}
module ftriangle(z, x, y, rad) {
   translate([0, y/4, 0])
   rotate([0, 0, 90])
      minkowski() {
         scale([y/x, 1, 1])
         cylinder(h=z-2*rad, d=x-2*rad, $fn = 3, center=true);
         sphere(rad, center=true);
      }
}
module point(wid) {
   ftriangle(bearing[z], wid, yAspect*wid, filRad);
}

difference() {
   union() {
      cylinder(h=bearing[z], d=bearing[x] + 2*thick, center=true, $fn=20);
      // points
      step = 360 / points;
      stop = (points-1) * step;
      for ( angle = [0 : step : stop] ) {
         rotate([0, 0, angle])
            translate([(bearing[x])/2-1, 0, 0])
               rotate([0, 0, -90])
                  point(nut[x]+thick*2+space);
      }
   }
   // holes
   cornerHoleOffset = 1.7 * points;
   union() {
      cylinder(h=2*bearing[z], d=bearing[x], center=true);
      step = 360 / points;
      stop = (points-1) * step;
      for ( angle = [0 : step : stop] ) {
         rotate([0, 0, angle])
            translate([(bearing[x]+nut[x])/2+thick/2, 0, 0])
               cylinder(h=2*bearing[z], d=nut[x], center=true, $fn=resolution);
         rotate([0, 0, angle-step/2])
            translate([bearing[x]/2+cornerHoleOffset, 0, 0])
               cylinder(h=2*bearing[z], d=cornerHole, center=true);
         rotate([0, 0, angle])
            translate([xOffset, 4.5, 0])
               cylinder(h=2*bearing[z], d=5, center=true);
         rotate([0, 0, angle])
            translate([xOffset, -4.5, 0])
               cylinder(h=2*bearing[z], d=5, center=true);

      }
   }
}
```


[User]
Okay, so I'm trying to design a bearing cap for fidget spinners, and I'm thinking something that can be customized through a few parameters. Basically, it's a flat disc that goes over the bearing and then has a smaller cylinder that fits into the inner part of the bearing.

Here's the breakdown of what I'm envisioning:

*   **Main Plate:** A flat, circular disc that sits on top of the bearing. This should have a parameter for thickness and diameter. The diameter should be slightly larger than the outer diameter of the bearing.
*   **Inner Cylinder:** A cylinder that protrudes from the main plate, designed to press-fit into the bearing's inner race.
*   **Air Gap:** There needs to be a gap between the base of the main plate and the beginning of the inner cylinder. This helps ensure the pressure is applied to the inner ring.

Here are the specific parameters I want to control:

*   `bearing_thickness`: The thickness of the bearing itself.
*   `bearing_outer_diameter`: The outer diameter of the bearing.
*   `bearing_inner_diameter`: The inner diameter of the bearing.
*   `plate_thickness`: The thickness of the main plate.
*  `air_gap`: The size of the gap between the main plate and the inner cylinder.
*   `oversize_for_clamping`: How much larger the inner cylinder should be compared to the bearing inner diameter, to ensure a press fit.
*   `oversize_main_plate`: How much larger the main plate should be compared to the bearing outer diameter.

I'd like to be able to modify all of those easily using parameters. I'd like the code to use `$fn` for better circular rendering, say 100. I don't want to use any external libraries for now.

Can you generate the necessary OpenSCAD file(s)?

[Assistant]
bearing_cap.scad:
```
//Bearing cap for fidget spinners

/* [Bearing Dimensions] */
bearing_thickness=7; //
bearing_outer_diameter=22; //
bearing_inner_diameter=8; //
/* [Cap Parameters] */
plate_thickness=1.3; //
air_gap=0.5; //
oversize_for_clamping=0.4; //
oversize_main_plate=0; //
/* [Hidden] */
phase=min(plate_thickness/2,1);

$fn = 100;
cylinder(phase,d1=bearing_outer_diameter+oversize_main_plate-phase*2,d2=bearing_outer_diameter+oversize_main_plate,center=false);
translate([0,0,phase]){
cylinder(plate_thickness-phase,d=bearing_outer_diameter+oversize_main_plate,center=false);   //main plate
}
translate([0,0,plate_thickness]){
cylinder(air_gap,d=bearing_inner_diameter+(bearing_outer_diameter-bearing_inner_diameter)/2,center=false);
}
translate([0,0,plate_thickness+air_gap]){
cylinder(min(bearing_thickness/2-0.7,5),d=bearing_inner_diameter+oversize_for_clamping,center=false);
}

echo(version=version());

```


[User]
Okay, so I'm looking to create a set of parametric connectors for foam board, similar to the ones I've been using, but I need them to be more robust and customizable than my old design. I'm aiming for a design that allows for different foam board and plywood thicknesses, along with adjustments for the connector arm widths and overall length. I'm specifically hoping for a more reliable behavior with Customizer than my previous attempt.

Here's what I need the OpenSCAD design to do:

1.  **Parametric Foam and Plywood Thickness:** I need to be able to specify the thickness of both the foam board and the plywood (or other material) it's connecting to. I should be able to set these as variables, and the design should adjust accordingly. The foam board thickness is often around 4.8-5mm, while plywood can vary but I mostly use 11mm (7/16").
2.  **Adjustable Connector Arm Widths:** The 'Red' and 'Green' sides of my current design (where it slides onto the foam/plywood) should have independently adjustable widths. I want to be able to set these as variables with a range of at least 3mm to 20mm.
3.  **Adjustable Connector Thickness:** I need to control the overall thickness of the connector itself. I'd like a variable for this with a range from 2mm to 25mm.
4.  **Length Offset:** I would also like a variable to extend the length of each of the connector arms.
5.  **Clean and Robust Design:** The connector should have a clean design without unnecessary complexity. It needs to be robust enough for repeated use without breaking. My previous design has been a bit brittle.
6.  **Visualization:** I'd like to be able to see the connector in OpenSCAD with each side a different color, as in the previous code (Red and Green).
7.  **User-Friendly Customization:** I'd like the parameters to be clearly labelled for easy customization within the Customizer.
8. **No Libraries:** Please do not use any external libraries for this project.

I'd like the connector to have two main parts, like an 'L' shape, with each part connecting to a separate board material (foam or plywood). I should be able to connect two foam boards together or a foam board to a plywood piece.

I'm hoping for a design that's easy to customize using the Customizer, and that all the parameters work smoothly. I think this time I need something more robust.

[Assistant]
Chris_foam_board_conn_customizer.scad:
```
/*************************************************/
/* Foam board connectors Customizer Version v2   */
/* Two different sizes:                          */
/*   - Foam to Foamfor plywood                   */
/*   - Foam to plywood table top ( 7/16" )       */
/* By Cpayne3d - 2015/2019                       */
/* Creative commons - Non-Commercial Share Alike */
/*************************************************/

plywood_thick = 11 +0;         // plywood/tabletop thickness value ( 11mm = 7/16" )
foam_thick = 4.9 +0;           // foam board thickness value       ( 4.9mm = common foam board)

/* [Settings] */
// Width of Red side (def 5)
Red_Side_Width = 5;    //[3:20]

// Width of Green side (def 5)
Green_Side_Width = 5;    //[3:20]

// Customize the thickness (def 10)
Connector_Thickness = 10; //[2:25]

// Customize offset lengths (def 0)
Connector_Length_Offset = 0; //[0:5]

//rotate([0, 270, 0])
  custom_connector();

module custom_connector() {
armwid = 3;
translate([Red_Side_Width + armwid*2, 1, 0])
difference() {
translate([0, 1, 1])
   union() {

//translate([0, 0, -(Red_Side_Width +7)])
translate([-(Red_Side_Width + armwid * 1.5 ), -0.25, 0])
color("Red")
  minkowski() {
   cube([Red_Side_Width + armwid*2, 25 + Connector_Length_Offset, Connector_Thickness]); // red cube
     rotate([0, 90, 0]) cylinder(h=1, r=1, $fn=20);
    }

translate([0.5, -1, 0])
 color("Green")  minkowski() {
   cube([25 + Connector_Length_Offset, Green_Side_Width +armwid*2, Connector_Thickness]); // green cube
   rotate([0, 90, 90]) cylinder(h=1, r=1, $fn=20);
    }

 } // //end union

union() {
// translate([3.5, 3, -2])
 translate([-(Red_Side_Width + armwid/2.5), 3, -2])
  color("Red") cube([Red_Side_Width, 25 + Connector_Length_Offset, Connector_Thickness +armwid*2]);  // trim red core

 translate([armwid, armwid, -1]) cube([25 + Connector_Length_Offset, Green_Side_Width, Connector_Thickness +armwid*2]); // trim green core
 }  // end union

} // end difference

} // end module
```


[User]
I need a parametric mount for a cylindrical object, like a motor. I've got some specific requirements, and I'd like it to be fairly flexible.

The mount should basically consist of two brackets that will hold the cylinder from the top and bottom. I need to be able to control the following:

*   **Cylinder Diameter:** I need to specify the radius of the cylinder that will be held by the mount.
*   **Bracket Width:** I need to specify the width of the bracket perpendicular to the cylinder axis
*  **Crown Height**:  This is the thickness of the bracket material on top of the cylinder.
*   **Bracket Gap:** There needs to be a small gap between the top of the cylinder and the start of the bracket on either side of the cylinder. This lets you slide in the cylinder after mounting the two brackets
*  **Fastener Parameters**:  The bracket should include mounting holes on either side of the cylinder. I'll need to control the following for these:
    *   **Fastener Plate Width**: This controls how far the fastener hole is from the edge of the bracket.
    *   **Fastener Bore Radius:** This controls the hole diameter for the fastener shaft.
    *   **Fastener Head Radius:** This controls the counterbore radius for the head of the fastener.
    *   **Fastener Head Height:** This is the depth of the counterbore.
    *   **Fastener Head Type:** This will need to be selectable, with options for none, round, hex, tapered (countersunk), and square (for carriage bolts).

Ideally, the design should use a `difference()` to cut out the cylinder space and fastener details from a solid block. I'd also like to ensure the mount is centered on the cylinder, and that the height of the mount is automatically calculated based on the cylinder radius, crown height, and the gap.

I'd like to be able to export two instances of this design, one for the top and one for the bottom. I'm not sure if this requires separate files, but I just want the output to consist of two brackets.

I don't have any existing code, and I'd appreciate it if the code were well-commented for readability. I also don't need to depend on external libraries, although I would prefer to leverage the standard OpenSCAD modules if possible.

[Assistant]
motor_mount.scad:
```
/*
Copyright © 2017 Richard Jorgensen
This work is free. You can redistribute it and/or modify it under the
terms of the Do What The Fuck You Want To Public License, Version 2,
as published by Sam Hocevar. See http://www.wtfpl.net/ for more details.
*/

/* [Motor Bracket] */
// Width of the bracket
width = 20;
// Radius of the motor
radius = 14;
// Thickness of bracket above motor
crown_height = 4;
// The amount of empty space to leave between brackets
gap = 1;

/* [Fastener] */
// Width of the fastener surface
screw_plate_width = 12;
// Radius of bore for the screw
screw_radius = 2.4;
// Radius of counterbore for screw head
screw_head_radius = 4.5;
// Depth of counterbore for screw head
screw_head_height = 5;
// Type of screw head
screw_head_type = 1; //[0:None,1:Round,2:Hex,3:Tapered,4:Square(Carriage Bolt)]

/* [Hidden] */
bracket_height = radius + crown_height - gap;
bracket_length = (radius + screw_plate_width) * 2;

difference() {
    // Body
    translate([0, 0, bracket_height / 2])
    cube(size = [width, bracket_length, bracket_height], center = true);

    // Motor cutout
    translate([0, 0, -gap])
    rotate(a=180, v=[1,0,1])
    cylinder(h = width + 1, r = radius, center = true);

    for (dir = [1, -1]) {
        // Screw shaft
        translate([0, (radius + screw_plate_width / 2) * dir, bracket_height / 2])
        cylinder(h = bracket_height, r = screw_radius, center = true);

        // Screw head
        head_trans = [0, (radius + screw_plate_width / 2) * dir, bracket_height];
        if (screw_head_type == 1) {
            translate(head_trans)
            cylinder(r = screw_head_radius, h = screw_head_height, center = true);
        }
        if(screw_head_type == 2) {
            steps = 6;
            translate(head_trans)
            cylinder(r = screw_head_radius, h = screw_head_height, $fn = steps, center = true);
        }
        if(screw_head_type == 3) {
            /* TODO: Allow user to input chamfer angle of countersink head
                     instead of using the radii. */
            translate(head_trans)
            cylinder(r1 = screw_radius, r2 = screw_head_radius, h = screw_head_height, center = true);
        }
        if(screw_head_type == 4) {
            steps = 4;
            translate(head_trans)
            rotate(a=[0, 0, 45])
            cylinder(r = screw_head_radius, h = screw_head_height, $fn = steps, center = true);
        }
    }
}

```


[User]
I need a parametric design for a corner post support, like the kind you'd put under a bed. I'd like it to be a simple box with a hollow center that fits snugly around the post.

Here are the key parameters I want to control:

*   **`Width`**: The outer width of the support (i.e. the dimension of one side of the cube), which corresponds to the internal dimension of the hollowed out part of the cube.
*   **`Wall_Thickness`**: How thick the walls of the support should be. This will determine the final size of the inner hollow. The inner hollow should be a square that's `Width - 2 * Wall_Thickness` on a side.
*   **`Height`**: The height to the main support level, which is the lower portion of the support.
*  **`Wall_Height`**: The additional height of the walls above the support level. The overall height of the support will therefore be `Height + Wall_Height`

So, imagine a cube. Then, imagine hollowing out the center of the cube by another cube that is offset in the x and y direction and slightly shorter in z. I need to be able to adjust all those dimensions with parameters.

Can you provide the OpenSCAD code for this?

[Assistant]
bed-corner-post-holder.scad:
```
/*
Bed Corner Post Holder

By Paul Houghton
Twitter: @mobile_rat
Email: paulirotta@gmail.com
Blog: http://paul-houghton.com/

Creative Commons Attribution ShareAlike License
https://creativecommons.org/licenses/by-sa/4.0/legalcode
*/

/* [Post Holder Options] */
// Width of the holder (inside dimension)
Width = 50;

// Wall thickness (reduces Width to create the holder)
Wall_Thickness = 5;
w2 = Width - 2*Wall_Thickness;

// Height to the support level
Height = 110;

// Additional height above the support level
Wall_Height = 40;
h2 = Height + Wall_Height;

difference() {
    cube([Width,Width,h2]);
    translate([Wall_Thickness, Wall_Thickness, Height])
        cube([w2,w2,Height]);
};
```


[User]
I'd like a fidget spinner design, similar to the one described at the provided link, but I want to be able to customize it even further. I want the main body of the spinner to have a central bearing and then radial arms that each hold weights, but I want to be able to modify more about the shape of those arms than is possible in the existing design.

Specifically, I want to be able to:

*   Choose the number of arms (or "hearts" as the original calls them) between 2 and 6.
*   Choose from the same set of weights as the original design: 608 bearing, 5/16 hex nut, 3/8 hex nut, 1/2 hex nut, M8 hex nut, M10 16 hex nut, M10 17 hex nut, M12 18 hex nut, M12 19 hex nut, M4 square nut, 5/16 ball bearing, 3/8 ball bearing, 1/2 ball bearing, and 5/8 ball bearing.
*  Define the center-to-center distance between the main bearing and the weight.
*  Define a profile for the arms. I want to be able to specify a series of 2D points that define the outer boundary of each arm. These should be connected by straight lines. I don't want to rely on a filleted heart shape, like the original design.
*  Specify a radius for fillets on the edges of the arm profile.
*  Specify the thickness of the spinner body. The weights should be recessed in the body, not sitting proud of the surface.
*  Specify a tolerance for the weight openings.

I don't have any existing code to attach, and I'm fine if you want to use any of the existing openSCAD libraries. I think that MCAD or BOSL might have some good features for this. I'd expect the design to be reasonably easy to print.

[Assistant]
heart-2017-9-29.scad:
```
// heart-hex-gen
// lucina
// 2017-09-29
//
// the number of hearts
hearts = 3; //[2,3,4,5,6]
// the type of nut
whichWeight = "5/16 hex nut";   //[608 bearing, 5/16 hex nut, 3/8 hex nut, 1/2 hex nut, M8 hex nut, M10 16 hex nut, M10 17 hex nut, M12 18 hex nut, M12 19 hex nut, M4 square nut, 5/16 ball bearing, 3/8 ball bearing, 1/2 ball bearing, 5/8 ball bearing]
// corner radius in mm
radius = 2.5;  //[0:.5:3]

/* [Hidden] */
$fn = 40;
x = 0; y = 1; z = 2;
inch = 25.4;
thick = 4;
space = 3;
bearing = [22, 22, 7]; //608 bearing
sae = [.577*inch, .5 * inch, 7]; // 5/16 hex nut
sae38 = [.650*inch,.562*inch, 7];	// 3/8
sae12 = [.866*inch, .75*inch, 7];	// 1/2
metric8 = [15, 13, 7];   // M8 hex nut
metric10_16 = [17.77, 16, 7];   // M10 16 hex nut
metric10_17 = [19.6, 17, 7];   // M10 17 hex nut
metric12_18 = [20.03, 18, 7];   // M12 18 hex nut
metric12_19 = [21.9, 19, 7];   // M12 19 hex nut
metric4sq = [7, 7, 3.2];
ball516 = [5/16*inch, 5/16*inch, 5/16*inch];
ball38 = [3/8*inch, 3/8*inch, 3/8*inch];
ball12 = [1/2*inch, 1/2*inch, 1/2*inch];
ball58 = [5/8*inch, 5/8*inch, 5/8*inch];

weight = (whichWeight == "608 bearing") ? bearing :
   (whichWeight == "5/16 hex nut") ? sae :
   (whichWeight == "3/8 hex nut") ? sae38 :
   (whichWeight == "1/2 hex nut") ? sae12 :
   (whichWeight == "M8 hex nut") ? metric8 :
   (whichWeight == "M10 16 hex nut") ? metric10_16 :
   (whichWeight == "M10 17 hex nut") ? metric10_17 :
   (whichWeight == "M12 18 hex nut") ? metric12_18 :
   (whichWeight == "M12 19 hex nut") ? metric12_19 :
   (whichWeight == "M4 square nut") ? metric4sq :
   (whichWeight == "5/16 ball bearing") ? ball516 :
   (whichWeight == "3/8 ball bearing") ? ball38 :
   (whichWeight == "1/2 ball bearing") ? ball12 : ball58;
echo(whichWeight, weight[x], weight[y], weight[z]);
resolution = (whichWeight == "5/16 hex nut") ? 6 :
(whichWeight == "3/8 hex nut") ? 6 :
(whichWeight == "1/2 hex nut") ? 6 :
(whichWeight == "M8 hex nut") ? 6 :
(whichWeight == "M10 16 hex nut") ? 6 :
(whichWeight == "M10 17 hex nut") ? 6 :
(whichWeight == "M12 18 hex nut") ? 6 :
(whichWeight == "M12 19 hex nut") ? 6 :
(whichWeight == "M4 square nut") ? 4 : 40;
echo("resolution=", resolution);

size = weight[x]+2;
step = 360 / hearts;
stop = (hearts-1) * step;

module fcylinder(z, x, rad) {
   translate([0, 0, rad-z/2])
      minkowski() {
         cylinder(h=z-2*rad, d=x-2*rad);
         sphere(rad);
      }
}
module fcube(x, y, z, rad) {
   translate([rad-x/2, rad-y/2, rad-z/2])
      minkowski() {
         cube([x-2*rad, y-2*rad, z-2*rad]);
         sphere(rad);
      }
}

module filletedHeart(sz, rad) {
rotate([0, 0, 45])
   union(){
      fcube(sz, sz, 7, rad);
      translate([0, sz*.44, 0])
         fcylinder(7, sz, rad);
      translate([sz*.44, 0, 0])
         rotate([0, 0, -90])
            fcylinder(7, sz, rad);
   }
}
difference() {
   union() {
      fcylinder(bearing[z], bearing[x]+2*thick, radius);
      for ( angle = [0 : step : stop] ) {
         rotate([0, 0, angle])
            translate([(bearing[x]+size)/2 + thick, 0, 0])
               rotate([0, 0, -90])
                  filletedHeart(size, radius);
      }
   }
   // holes
   union() {
      cylinder(h=2*bearing[z], d=bearing[x], center=true);
      for ( angle = [0 : step : stop] ) {
         rotate([0, 0, angle])
            translate([(bearing[x]+size)/2 + thick + 2, 0, 0])
               rotate([0, 0, 30])
                  cylinder(h=2*bearing[z], d=weight[x], center=true, $fn=resolution);
      }
   }
}

```