[User]
I'm looking to create a parametric desk tray with rounded inside corners to make it easier to pick things up from the tray. I'd like to be able to customize the overall dimensions, the corner radii, wall thickness, and the inner depth of the tray.

Specifically, I'd like these parameters:

*   **`$fn`**: for resolution, like the existing code, with options for "Fast", "Normal", "Slow", and "SuperSlow" corresponding to values like 16, 32, 64, and 128.
*   **`o_width`**: The outer width of the tray.
*   **`o_height`**: The outer height of the tray.
*   **`o_rad`**: The outer corner radius of the tray.
*   **`o_sides_only`**: A boolean to indicate whether to only render the outer tray box sides.
*  **`wall`**: The wall thickness.
*   **`i_depth`**: The inner depth of the tray.
*   **`i_rad_multiplier`**: A multiplier for the outer corner radius that will give the inner corner radius.

The design should use `difference()` to create the tray, subtracting the inner rounded box from the outer rounded box. The tray should have a flat bottom, so make sure the inner box's depth calculation is correct to accomplish that. The `MCAD/boxes.scad` library has a `roundedBox()` module that I'd like you to use for the outer and inner boxes.

Could you generate the necessary OpenSCAD file(s) to achieve this? Thanks!

[Assistant]
Rounded_inside_desk_tray_v1_parameterized.scad:
```
///////////////////////////////////////////////////////////////////////////////
////////////////////// Rounded Inside Desk Tray ///////////////////////////////
/*/////////////////////////////////////////////////////////////////////////////
date started:
date finished:
modeler:
copyright:		N/A
comments:		Rounded Inside Desk Tray so it's easier to pick things up
*//////////////////////////////////////////////////////////////////////////////
/////////////////////////// - Parameters - ////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
/* [Global] */
// Resolution of the tray?
$fn=64; // [16:Fast, 32:Normal, 64:Slow, 128:SuperSlow]

/* [Tray Outer Dimensions] */
// Outer width of the tray?
o_width = 140; // [50:145]
// Outer height of the tray?
o_height = 140; // [50:145]
// Outer corner radius of the tray?
o_rad = 5; // [1:15]
// Outer tray box sides only?
o_sides_only = true; // [true, false]
// Wall thickness?
wall = 3; // [1:7]

/* [Tray Inner Dimensions] */
// Inner depth of the tray?
i_depth = 20; // [5:145]
// Inner corner radius of the tray?
i_rad_multiplier = 3; // [1:15]

////////////// math //////// - Don't Change - //////////////// math ///////////
/* [Hidden] */
use <MCAD/boxes.scad>;
o_depth = i_depth + wall;
i_sides_only = false;
///////////////////////////////////////////////////////////////////////////////
//////////////////////////// - Renders - //////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
difference()
{
	o_box();
	i_box();
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////// - Modules - /////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
module o_box()
{
	roundedBox([o_width, o_height, o_depth], o_rad, o_sides_only);
}
///////////////////////////////////////////////////////////////////////////////
module i_box()
{
	translate([0,0,i_depth-(wall*2)]) roundedBox([o_width-(wall*2), o_height-(wall*2), (o_depth*2)], o_rad*i_rad_multiplier, i_sides_only);
}
///////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////
///////////////////////////// - Echos - ///////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
echo(" -- /////////// - Echos - ////////////// --");
echo("$fn - Resolution = ",$fn); //Resolution
//echo(" = ", ); //Description

echo(" -- /////////////////////////////////////// --");
echo("clip - ([0,0,0])  ");
echo("clip - translate([0,0,0])  ");
echo("clip - rotate([0,0,0])  ");
echo(" -- /////////////////////////////////////// --");
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
////////////////////////////// - Clip_Pad - ///////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
//
///////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////
//
//	([0,0,0])
//	translate([0,0,0]){
//	rotate([0,0,0]){
//
//  -- Golden Rule of 1.6
//
// roundedBox([width, height, depth], float radius, bool sidesonly);
// EXAMPLE USAGE:
// roundedBox([20, 30, 40], 5, true);
// size is a vector [w, h, d]
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
```


[User]
Hey, I'm looking to design a tracked vehicle, and I need a chain and sprocket system for it. I have some ideas, but I'd like you to generate the OpenSCAD code for me.

Here's what I have in mind:

**Chain Design:**

*   The chain should be composed of repeating links.
*   Each link will have a central, main body with a hole for a connecting rod/pin.
*   Each link will also have two "side" grip areas that extend out and connect to the next link's rod, creating the chain.
*   The main body of the link should have recesses or slots that the wheel teeth will slot into. The slots should be two sets of two, a pair at each end of the link, allowing the wheel to mesh when the link travels up along the wheel.
*   The link should also feature a "V" shaped grip on the outside edge of the link, to increase grip with the track surface.
*   I need to be able to set the step/size of the chain link, the number of chain links, and the thickness of the grips.
*   The links should be articulated, and the connections between the rod holes and the side grips should be a tight tolerance.

**Wheel Design:**

*   The wheel should have teeth that fit into the recesses/slots in the chain links.
*   The wheel should have a central hole for an axle.
*   The wheel should have some kind of spoke structure to reduce material use, but still maintain a solid design.
*   I need to be able to set the number of teeth on the wheel and the axle diameter.
*   The wheel's radius should be determined by the number of teeth and the step size of the chain links.
*   The wheel and chain should work together seamlessly.

**Parameters:**

I would like to be able to configure the following as parameters at the top of the file:

*   `link_size` (the step size of the chain links)
*   `link_grip_thickness` (the thickness of the V-shaped grip on the outside of the link)
*   `chain_links` (the number of chain links)
*  `wheel_teeth` (the number of teeth on the wheel)
*   `axis_diameter` (the diameter of the axle hole)

**Modules:**

I'm thinking of the following modules as a start:

*   `link()`: Generates a single chain link (without grips)
*   `tooth()`: Generates a single tooth on the wheel
*   `teeth()`: Generates a set of two teeth
*   `link_teeth()`: Generates a single chain link with teeth cutouts
*  `test_Nlinks()`: for debugging/testing, generate a straight length of N links (no curve)
*   `chain_Nlinks()`: Generates a full loop of chain with a given number of links
*   `wheel()`: Generates the wheel with teeth

I'm happy for you to add or adjust these as necessary, and I'm not set on these particular modules. I'm not looking for perfect tolerances or for it to be print ready, but a functioning base that I can use. Let me know if you need more information. I'm hoping to have a full system where I can see the track interacting with the wheel, something that would make use of the `chain_Nlinks()` and `wheel()` modules together.

[Assistant]
chain_wheel.scad:
```

link_size = 15; // link step size
link_grip_thickness = 1.5;
chain_links = 20;
wheel_teeth = 10; // number of wheel teeth
axis_diameter = 5;

$fn=20;
W = link_size;
WL_NB = wheel_teeth;

// wheel radius from nb of links
WL_R = W*cos(180/WL_NB)/(2*sin(180/WL_NB))-W/4;

// grip thickness
G = link_grip_thickness;

margin_Rrod = 0.5;
margin_slot = 0.5;
margin_Rlink = 0.5;

// link rods are spaced by a distance of W
module link()
{
	// mid part : rod hole
	// 0.05*W margin = a bit smaller than slot it should fit in
	color("orange")
	difference()
	{
		translate([0,0,W/4])
			hull()
			{
				translate([W/4,0,0])
					cube([W/2,W/2,W/2]);
				translate([0,W/4,0])
					cylinder(r=W/4-margin_Rlink, h=W/2);
			}
		// hole : a bit larger than rod
		translate([0,W/4,0])
			cylinder(r=W/10+margin_Rrod, h=W);
	}

	// side parts : rod attachments
	color("yellow")
	translate([W/4,0,0])
	difference()
	{
		hull()
		{
			cube([W/2,W/2,W]);
			translate([3*W/4,W/4,0])
				cylinder(r=W/10,h=W);
		}
		translate([W/2,0,W/4-margin_slot])
			cube([W/2,W/2,W/2+2*margin_slot]);
	}

	// rod
	color("red")
	translate([W,W/4,0])		cylinder(r=W/10, h=W);
}

module tooth()
{
	cylinder(r1=W/5, r2=0, h=W/5);
	translate([0,0,-W/10]) cylinder(r=W/5, h=W/10);
}

module teeth()
{
	tooth();
	translate([0,W/2,0]) tooth();
}

module link_teeth()
{
	difference()
	{
		link();
		// holes
		translate([W/2,0,3*W/4])
			rotate([-90,0,0])
				teeth();
	}
	// grip "V"
	translate([W/4,W/2+G,0])
	rotate([90,0,0])
		linear_extrude(G+1)
		{
			hull()
			{
				translate([G/2,G/2])	circle(G/2);
				translate([W/2-G/2,W/2])	circle(G/2);
			}
			hull()
			{
				translate([G/2,W-G/2])	circle(G/2);
				translate([W/2-G/2,W/2])	circle(G/2);
			}
		}
}

module test_Nlinks(nb_link)
{
	for(i=[0:nb_link-1])
	{
		translate([i*W,0,0]) link_teeth();
	}
}

module chain_Nlinks(nb_link)
{
	echo("Number of links",nb_link);
	assign(R=W*cos(180/nb_link)/(2*sin(180/nb_link)))
	{
		echo("estimated chain print space (diameter)",2*(R+W/4));
		for (i=[0:nb_link-1])
		{
			rotate([0,0,360*i/nb_link])
				translate([-W/2, R-W/4, 0])
					link_teeth();
		}
	}
}

module wheel(nb_link=WL_NB)
{
	// inner
	linear_extrude(W)
	{
		difference()
		{
			circle(r=WL_R, $fn=180);

			for (i=[0:4])
				rotate(360*i/5)
				{
					translate([0.6*WL_R,0])
						circle(r=0.25*WL_R);
					rotate(360/10)
					{
						translate([0.75*WL_R,0])
							circle(r=0.12*WL_R);
						translate([0.3*WL_R,0])
							circle(r=0.09*WL_R);
					}
				}

			circle(r=axis_diameter/2, $fn=180);
		}
	}

	// teeth
	for (i=[0:nb_link-1])
	{
		rotate([0,0,360*i/nb_link])
			translate([0, WL_R, 3*W/4])
				rotate([-90,0,0])
					teeth();
	}
}

//test_Nlinks(2);
chain_Nlinks(chain_links);
wheel();

```


[User]
Hey, I'm looking for some help creating a customizable frame for PCBs, kind of like the one I've already got but with some added flexibility. I've been using a simple design I made that's based on standard Eurocard sizes, and I want to be able to do more with it.

Essentially, I want to create a parametric OpenSCAD model that generates frames for PCBs. The basic idea is a rectangular box with a hollowed-out center, so the PCB sits inside the frame. I'd like it to have these parameters:

*   **Height (h):** The overall height of the frame.
*   **Length (l):** The length of the frame, corresponding to the PCB length.
*   **Width (b):** The width of the frame, corresponding to the PCB width.
*   **Material Thickness (mt):** The thickness of the frame walls.
*   **Standoff Spacing (spare):** The spacing for standoffs, which will be used to mount the PCB and potentially secure the frame to something else.

The frame should have standoffs at each corner, like in my existing design. The standoffs are created by small cube cutouts, and these are where the standoff posts will be placed when printing.

Here's the existing code I've been using for reference; it might help guide what I'm looking for.
```
// euro platine pcb framing by zeus - zeus@ctdo.de - 2014-11-20
// 160x100mm is 1 full-sized euro platine
//  80x100mm is 1 half-sized euro platine
//  80x50mm  is 1 quarter-sized euro platine

// =====================================

// height
h=15; // [1:200]
// length
l=80; // [1:200]
// width
b=50; // [1:200]
// material thickness
mt=2; // [1:200]
// standoff spacing (10mm is good for m3 and m4 standoffs)
spare=10; // [1:200]

// =====================================

translate([0,0,h/2]){
	difference(){
		cube([l,b,h],center=true);
		cube([l-mt*2,b-mt*2,h+1],center=true);
	}
	for(x=[-l/2+spare/2+mt,l/2-spare/2-mt],y=[-b/2+spare/2+mt,b/2-spare/2-mt]){
		translate([x,y,0]){
			difference(){
				cube([spare+mt*2,spare+mt*2,h],center=true);
				cube([spare,spare,h+1],center=true);
			}
		}
	}
}
```

I'd like to see it made into a library, if possible. That way, I can import it and generate frames in my other OpenSCAD projects. I would also appreciate it if the library was modular enough to be able to generate _just_ the corner standoffs, should I ever need that for a different project. The standoffs should be a configurable size so that I can adapt it to different screw head sizes. I'm not sure if this is better as one file or multiple - whatever works best.

Thanks for your help!

[Assistant]
frame.scad:
```
// euro platine pcb framing by zeus - zeus@ctdo.de - 2014-11-20
// 160x100mm is 1 full-sized euro platine
//  80x100mm is 1 half-sized euro platine
//  80x50mm  is 1 quarter-sized euro platine

// =====================================

// height
h=15; // [1:200]
// length
l=80; // [1:200]
// width
b=50; // [1:200]
// material thickness
mt=2; // [1:200]
// standoff spacing (10mm is good for m3 and m4 standoffs)
spare=10; // [1:200]

// =====================================

translate([0,0,h/2]){
	difference(){
		cube([l,b,h],center=true);
		cube([l-mt*2,b-mt*2,h+1],center=true);
	}
	for(x=[-l/2+spare/2+mt,l/2-spare/2-mt],y=[-b/2+spare/2+mt,b/2-spare/2-mt]){
		translate([x,y,0]){
			difference(){
				cube([spare+mt*2,spare+mt*2,h],center=true);
				cube([spare,spare,h+1],center=true);
			}
		}
	}
}
```


[User]
I need a parametric OpenSCAD design for a box to hold Hive game pieces, including expansions. It should accommodate two sets of 14 pieces each. The design should consist of two main parts: the box body and a cover.

The box itself should be made up of stacked hexagonal sockets to hold the figures. The height of a single figure is 12mm, and the outer diameter is 42.95mm. I would like to control these parameters and others through variables at the top of the file.  The figures should have some extra space (say 2mm) around them, and there should be a wall thickness between adjacent sockets which should be configurable. The box should be able to stack a configurable number of figures high, like 4.

I also need a hole in the bottom for air circulation/to allow a finger to push the figures up, about 20mm in diameter.

The cover should fit snugly on top and be configurable in height. I'd like the cover to have the word "HIVE" printed on it.  I'm planning to use a dual extruder for this, so the text should be a separate object that sits slightly above the cover, around half the wall thickness. The text size, and font should also be configurable.

Specifically, here are the parameters I want to control:

*   `oh`: Height of one hive figure (default 12mm)
*   `ow`: Outer diameter of hive figure (default 42.95mm)
*   `zapas`: Extra space around the figures (default 2mm)
*   `stenka`: Wall thickness between figure sockets (default 2mm)
*   `num_height`: Number of figures in the stack (default 4)
*   `finger`: Diameter of the hole in the bottom (default 20mm)
*   `cover_height`: Height of the cover (default 5mm)
*   `tsize`: Text size on the cover (default 35)

I'd like it to use the `write/Write.scad` library for the text. I'm pretty new to this so I don't have any code fragments to provide, sorry.

[Assistant]
box.scad:
```
// Which one would you like to see?
part="scribe"; // [body: The box,cover: the cover of the box,scribe: the scibe (dualstruder)]

/* [Global] */

// height of one hive figure
oh=12; // [3:30]

// outer diameter of hive figure
ow=42.95; // [10:50]

// extra space to keep in addition to figures
zapas=2; // [0:3]

// size of the wall between figures
stenka=2; // [1:10]

// number of figures in stack
num_height=4; // [1:10]

// size of the hole on the bottom (to fit a finger)
finger=20; // [0:30]

/* [Cover] */

// text size (adjust to feed into the cover)
tsize=35; // [5:50]

// Height of the cover
cover_height=5; // [5:50]

/* [Hidden] */

dt=0.01;
r_mink=3;

use <write/Write.scad>

module hex(size, height)
{
	minkowski() {
		cylinder (h=height-dt,r=size/2-r_mink,$fn=6);
		cylinder (h=dt,r=r_mink,$fn=60);
	}
}

module socket (height, finger)
{
	difference() {
		hex (ow+zapas+stenka*2, height);
		translate([0,0,stenka])
			hex (ow+zapas, height);
		if ( finger>0 )
			translate([0,0,-1])
				cylinder (h=stenka+2,r=finger/2,$fn=60);
	}
}

module socket_cover ()
{
	union() {
		hex (ow+zapas+stenka*2, stenka);
		translate([0,0,stenka-dt])
			difference(){
				hex (ow+zapas/2, cover_height+dt);
				hex (ow+zapas/2-stenka*2, cover_height+dt+dt);
			}
	}
}

sqrt3=1.732050808;

module body (height)
{
	size = ow+zapas;
	distance=2*r_mink+(size/2-r_mink)*sqrt3;
	socket(height, finger);
	for ( i = [0 : 5] )
	{
   	 rotate( i * 360 / 6, [0, 0, 1])
		   translate([0, stenka+distance, 0])
	   		 socket( height, finger);
	}
}

module cover ()
{
	size=ow+zapas;
	socket_cover();
	for ( i = [0 : 5] )
	{
   	 rotate( i * 360 / 6, [0, 0, 1])
	    translate([0, stenka+2*r_mink+(size/2-r_mink)*sqrt3, 0])
   	 socket_cover();
	}
}

module scribe(height=stenka/2)
{
	rotate([180,0,30])
	translate([0,tsize/7,-height/2+dt])
	write("HIVE",t=height,h=tsize,center=true,font="write/knewave.dxf");
}

if ( part=="body" ) {
	// body
	body (stenka+zapas+oh*num_height+cover_height);
} else if ( part=="cover" ) {
	// cover
	difference() {
		cover();
		scribe();
	}
} else if ( part=="scribe")
{
	scribe();
} else if ( part=="test")
{
	// framework to test any parts
	scribe();
}
```


[User]
Hey, I'm looking to get some help designing a training aid for hockey stick handling. Basically, I want a grip that slides onto a hockey stick and prevents the lower hand from moving incorrectly. It should encourage using the wrist more, and help build strength there.

The main idea is that the grip will have a larger, roughly oval cross-section, kind of like a flattened cylinder, that goes around the stick, and there will be a smaller inner hole for the stick. So, you have a bigger outer shape with a stick-sized hole. I'd like to make this parametric so that the size of the stick can change, and I can adjust the height.

Here are the critical parameters I want to be able to control:

*   `width_a`: The smaller width of the stick, in mm.
*   `width_b`: The larger width of the stick, in mm. This is for the oval shape.
*   `height`: The height or length of the grip, in mm. This will be the height of the main cylinder-like shape

So it would look like it has a base that's a short, wide cylinder, and then a taller cylinder (that is the main body of the handle) on top of that. The hole for the stick would go through the entire thing. There's also a rectangular cutout going through the side of the main handle's cylinder that I would like to include in the design, and allow this cutout to be controlled via a parameter.

I'm expecting to use this with regular hockey sticks, so hopefully this means that I don't need to adjust for any complex cross-sections or anything. I have a basic handle already that is just a cylinder with a cutout, but it is only one size. Can you help me come up with a parametric OpenSCAD file that will generate this design?

I don't need to use any specific libraries for now.

[Assistant]
hockey_helper.scad:
```
//smaller width of the stick in mm
width_a=18;
//larger width of the stick in mm
width_b=28;
//height you want your handle (height of your hand)
height=100;

////calculations////
width_c=(width_a/2)-2;
diameter=sqrt(pow(width_a,2)+pow(width_b,2));

module base(){
union(){
cylinder(d=diameter+10,h=4);
cylinder(d=diameter+6,h=height);
}}

difference(){
base();
cylinder(d=diameter,h=height);
translate([-width_c,diameter/2-3,0])cube([width_a-4,width_a-4,height]);
}

//to see how it fits on your stick un comment the following code
//cube([width_a,width_b,height],center=true);
```


[User]
Hey, I'm looking for an OpenSCAD design for a laser cutter calibration comb. I want to be able to adjust a few key parameters.

First, I need to set the material thickness, like for 3mm plywood or whatever I happen to be using. Then, I want to specify how many slots should have positive offsets (so the slot is slightly larger than my material thickness) and how many should have negative offsets (so the slot is slightly smaller). Finally, I need to set the delta value, which is the amount each slot edge is offset by. I also need to be able to choose whether to output a 3D STL part or a 2D DXF drawing.

The design should create a comb-like shape with a series of slots. The middle slot should be exactly the material thickness. The slots to the left should be increasingly smaller and the slots to the right should be increasingly larger, based on the delta value and number of offsets selected. I want each slot to have a little text next to it indicating the actual slot size, using a delta value (e.g., "-0.006" or "+0.003"). This text should also be a 3d object, not just a projection.

For the text, it should be readable after rotation around the Z axis (so essentially printed vertically along the part). The main part needs to be a cube, and the slots should also be cube-shaped extrusions subtracted from that cube. I'd also like it if there is some base depth around the slots, so the comb extends beyond the slot cut depths.

I think I need a `write` function to make the text, and the attached code uses an external file `Write.scad`. Would you please implement the equivalent text-generating function and integrate it into the code? I'm not interested in any alternative methods of writing text, as this is the method that is used in the original design.

I think I've got all the important parameters here, but let me know if you need any more information. Thanks for your help!

[Assistant]
Customizable_Laser_Cutter_Calibration_Comb.scad:
```
// USER PARAMETERS ============================================

// What is measured thickness of your material?
material_thickness = 0.201;

// How many positively-offset slots? (More material)
n_positive_tests = 3; // [0:20]

// How many negatively-offset slots? (Less material)
n_negative_tests = 5; // [0:20]

// How much should the edges of each slot be offset?)
delta = .003;

// Generate a 3D part or a 2D drawing?
output_type = "stl"; //[stl:3D Part, dxf:2D Drawing]

// =============================================================

// ATTENTION: Switch these lines if you're using locally instead of on Thingiverse!!!
// use <Write.scad> // works locally
use <write/Write.scad>	 // works on Thingiverse

// =============================================================

main();

//sign_spacing = sign_width * 1.80;
//base_depth = max(sign_spacing* max(n_positive_tests, n_negative_tests), material_thickness*2);

base_depth = material_thickness * 4.5;
slot_depth = material_thickness * 3;
comb_depth = slot_depth + base_depth;

sample_spacing = (material_thickness*2 + n_positive_tests*delta);
sample_width = sample_spacing + material_thickness;

module make_text(n) {

	// chained ternary operator to assign the text
	txt = (n == 0) ? str(material_thickness) :
			 (n < 0) ? str(delta*n) : str("+", delta*n);

	// create the text as solid objects
	translate([0,0,-0.1]) //shift down in z
	rotate(90,[0,0,1])  // rotate around the z axis
	write(txt, t=material_thickness+.2, h=material_thickness*.8);
}

module make_sample(n) {
	slot_width = material_thickness - delta*n*2;
	translate([sample_spacing*n, 0, 0])
	difference(){
		translate([-sample_width/2, 0, 0])
		cube([sample_width, comb_depth, material_thickness]);
		union(){
			translate([-slot_width/2, -0.01, -0.1])
			cube([slot_width, slot_depth, material_thickness+0.2]);
			translate([material_thickness*0.4, slot_depth+material_thickness, 0])
			make_text(n);
		}
	}
}

module make_comb(){
    union(){
        for (i = [-n_negative_tests:n_positive_tests]){
            make_sample(i);
        }
    }
}

module main() {
	if (output_type == "stl") {
		make_comb();
	} else if(output_type == "dxf"){
		projection(cut=true)
		translate([0,0,-material_thickness/2])
		make_comb();
	}
}

```


[User]
Hey, I'd love to get a custom bracelet design in OpenSCAD, something I can tweak myself. I've been playing with the mathgrrl code but it's a bit complex and I'd like to work with something a bit more modular. The basic concept should be a parametric bracelet that follows a wavy path around a wrist, with customizable:

1.  **Size:**  I need to be able to set the diameter of the basic circle (or oval), the height (thickness along the wrist), and the overall thickness of the band material itself.

2.  **Shape/Twist:** I want to be able to twist the bracelet as it extrudes along the height. It would be amazing to adjust the "ovalness" of the bracelet too, so it's not just always a circle but can be stretched. Also, I need an option for a gap in the bracelet instead of a closed loop, so I can make wrap-style bracelets. And, lastly, a parameter to flare the edges as it extrudes is a must-have.

3.  **Wave/Trigonometry:** This is the tricky bit but the core of the design. I need parameters to control:
    *   The amplitude of the waves (how tall the bumps are).
    *   The frequency of the waves (how many bumps).
    *   A step size for the curve detail. Smaller step = finer detail (and longer processing time).
    *   Sine and Cosine frequency modifiers for the wave; basically, so I can create more complex trigonometric curves than just a simple sine wave, like in the original mathgrrl code.

4. **Modules:** The generated code should use well-defined modules for both the wave function and for creating the final form of the bracelet. I'd also like some kind of module for creating a hull between the function-generated points.

I'm aiming for something that I can easily adjust through the customizer. So, the parameters should be well-documented in the code. I am not requesting to make any improvements to any existing code.

The base concept is to extrude the hull of a wave-shaped 2D form up into a 3D bracelet. The core of the wave form comes from the mathgrrl code, but I want a more generalized parametric setup. The code I looked at did not appear to rely on any particular library, so I am not requesting any libraries.

Thanks a bunch!

[Assistant]
mathgrrl_functionbracelet_customizable.scad:
```
// mathgrrl trigonometric bracelet

$fn = 12*1;	// larger means finer (and slower!)

/* [Size] */

// (make it large enough so that you can get the bracelet over your hand)
diameter = 65;

radius = diameter/2;

// (the length of the band along your wrist)
height = 8;

// (recommend between .2 and 1 for most designs)
thickness = .4;

/* [Design] */

// (to twist while extruding; 0 = straight, more = twisted)
degrees = 0;

// (muliplier to make ovals instead of circles; 1 = circle, less = inside oval, more = outside oval)
oval = 1;

// (to change from a bangle to a wrap; 0 = closed circle, more = open gap)
cut = 0;

// (multiplier for flaring in/out during the extrude; 1 = straight up, less = closes up, more = opens up)
flare = 1;

/* [Math] */

// (low = shorter bumps, high = taller bumps)
amplitude = 4;

// (low = fewer bumps, high = more bumps)
frequency = 24;

// (step size for sampling the curve; smaller means finer, larger can be cool low-poly)
step = .5; 	//

// Sine/Cosine frequency modifiers (for a simple sine curve choose s=1 and c=0)
s = 1;	//[0,1,2,3,4,5]
c = 0;	//[0,1,2,3,4,5]

///////////////////////////////////////////////////////////////////////
// define the wave function

function f(t) = 1+sin(s*frequency*t)*cos(c*frequency*t);

///////////////////////////////////////////////////////////////////////
// define the wrapped wave function

function g(t) =
   [ oval*(radius+amplitude*f(t))*cos(t),
     (radius+amplitude*f(t))*sin(t),
     0
   ];

///////////////////////////////////////////////////////////////////////
// renders

// the bracelet
rotate(-90/frequency,[0,0,1])
linear_extrude(height=height, twist=degrees, slices=height/.4, scale=flare)
	function_trace(rad=thickness, start=0+90/frequency+cut, step=step, end=360+90/frequency-cut);

///////////////////////////////////////////////////////////////////////
// module for tracing out a function

module function_trace(rad, start, step, end) {
 for (t=[start: step: end-step]) {
  hull() {
   translate(g(t)) circle(rad);
   translate(g(t+step)) circle(rad);
       }
   }
};
```


[User]
I need a hose adapter designed in OpenSCAD. It should be parametric so I can easily adjust the dimensions. Basically, it's a cylinder with a different diameter at each end and a tapered section in the middle to connect them.

Specifically, I need to be able to specify:

*   The inner and outer diameters of the small end.
*   The length of the small end.
*   The inner and outer diameters of the large end.
*   The length of the large end.
*   The length of the tapered center section.

The adapter should be a hollow cylinder, so the inner dimensions should be subtracted from the outer dimensions. I'm thinking the simplest implementation would just be the difference of two cylinders for each section. I'd like for the resolution to be high, so could the `$fn` value be set to 100 for all cylinders?

I plan to use this for things like dust collection and vacuum hoses, so it needs to be easily adaptable to different hose sizes. I want to be able to set my hose sizes based on the measurements I take. So, for example, if I have a hose with a 50mm inner diameter, I would want to specify that in my parameters as the inner diameter.

[Assistant]
hose_adapter.scad:
```
//small end inner diameter in mm
small_end_inner=50;

//small end outer diameter in mm
small_end_outer=53;

//small end length in mm
small_end_len=20;

//large end inner diameter in mm
large_end_inner=56;

//large end outer diameter in mm
large_end_outer=59;

//large end length in mm
large_end_len=20;

//center section length in mm
center_end_len=20;

union() {
difference(){
cylinder(h=small_end_len, r=small_end_outer/2, center=false,$fn=100);
cylinder(h=small_end_len, r=small_end_inner/2, center=false,$fn=100);
}

translate([0,0,small_end_len]) difference(){
cylinder(h=center_end_len, r1=small_end_outer/2, r2=large_end_outer/2,center=false,$fn=100);
cylinder(h=center_end_len, r=small_end_inner/2, center=false,$fn=100);
}

translate([0,0,small_end_len+center_end_len]) difference(){
cylinder(h=large_end_len, r=large_end_outer/2, center=false,$fn=100);
cylinder(h=large_end_len, r=large_end_inner/2, center=false,$fn=100);
}

} //union

```


[User]
I'm looking to create a customizable tray for pentominoes, and I'd like it to be designed in OpenSCAD. I've got a basic design in mind, but I'd like the whole thing to be parametric so I can easily change things like size and wall thickness.

Here are the core parameters I want to be able to control:

*   `length`: This is the size of one pentomino unit square, in millimeters. The default should be 10 mm.
*   `tray_rows`: The number of rows in the tray. The default should be 6.
*   `tray_cols`: The number of columns in the tray. The default should be 10.
*   `wall`: The thickness of the walls and the floor of the tray, in millimeters. The default should be 4mm.

The tray itself should be a simple box with the specified dimensions. The interior of the tray should have a depth just slightly greater than half the unit length, using the floor thickness as part of the depth. The tray needs to be a solid block with a cavity hollowed out to the correct dimensions.

I'd also like to be able to adjust the depth of the tray's inner cavity and add some rounded corners, so maybe include parameters like:

* `cavity_depth`: the depth of the hollowed out area of the tray, in mm. Default should be `length/2 + 1`.
* `corner_radius`: the radius of the rounded corners at the base of the tray and at the top edge, in mm. Default should be 2. This should be applied to the *outside* corners of the tray as well.

Could you generate an OpenSCAD file (or files, if that's more organized) to do this? I'd prefer not to rely on any external libraries for this design, just the basic OpenSCAD primitives.

[Assistant]
Pentominos_tray.scad:
```
// Size of one pentomino unit square (in mm)
length=10;

// Number of rows
tray_rows=6;

// Number of columns
tray_cols=10;

// Thickness of walls and floor (in mm)
wall=4;

module tray() {
	difference() {
		cube([tray_cols*length + 2*wall, tray_rows*length + 2*wall, length/2+wall]);
		translate([wall, wall, wall])
			cube([tray_cols*length, tray_rows*length, length/2+1]);
	}
}

tray();
```


[User]
I'm looking to design a spool holder for my 3D printer, specifically a Prusa i3 style printer. I'd like it to be parametric so I can adjust the dimensions if needed later. The design is roughly based on the provided SCAD code but needs some refinement and must be fully parametric from the start.

Here's the breakdown of what I need:

*   **Core Structure:** The holder will consist of two mirrored side pieces. Each side will have a base, an angled support arm, and a top support piece for the spool. These pieces need to be joined as one contiguous part.
*   **Base:** The base will have two sections, one lower and one higher, connected via the support arm. The lower base will be a rectangle, while the upper section will be a rectangle that is offset from the lower base to create a step.
*   **Support Arm:** The support arm will be angled upwards from the back of the base, extending to the support piece for the spool. The angle of this arm should be calculated based on the height difference between the base and the top piece, and the horizontal distance. I'd like to specify a horizontal offset for where the angled arm begins.
*   **Top Support:** The top support section for the spool will be another rectangular section which rests on the end of the angled support.
*   **Mounting:** Each piece should have two countersunk screw holes for mounting to the printer frame. One hole should be located on the bottom rectangle, near the front face of the piece, and one hole at the top of the angled arm. These should be located at parametrically-specified offsets from the edges of the relevant rectangular shapes.
*   **Spool Support Details:** There should be a rod-like section along the top of the angled support, created with a cylinder with a rounded part at each end that's part of the main print, not something separate we'd add in.
*   **Linguetas:** There are two 'lingueta' sections at the base. These will be small, rectangular extensions with a hole for securing the piece to a baseplate (if desired). These will be near the lower and upper edges of the base rectangles.

**Parameters (these should all be adjustable)**:

*   `grossura_Da_Peca`: Overall thickness of the side piece.
*   `grossura_Da_Barra_Superior`: Thickness of the top support piece.
*   `altura_Do_Apoio_Alto`: Height of the top support piece.
*   `altura_Do_Apoio_Baixo`: Height of the lower section of the base.
*   `profundudade_Maxima_Da_Barra_Superior`: Depth of the base and top piece.
*  `distancia_Superior_Reta`: Horizontal offset of the top of the angled support from the front of the base.
*   `distancia_Inferior_Reta`: Horizontal offset of the base of the angled support from the front of the base.
*   `tamanho_Da_Aste_Que_Sobe`: Length of the angled support arm.
*   `raio_Do_Furo`: Radius of the screw holes.
*  `borda_Do_Furo_Pra_Fora`: Horizontal offset of the screw hole from the edge of the support arm.
*  `borda_Do_Furo_Pra_Cima`: Vertical offset of the screw hole from the top edge of the support arm.
*   `tamanho_Da_Lingueta`: Length of the lingueta.
*   `grossura_Da_Lingueta`: Thickness of the lingueta.
*   `raio_Do_Furo_Da_Lingueta`: Radius of the lingueta mounting holes.
*  `offset_furo_baixo_x`: Horizontal offset of the screw hole on the base.
* `offset_furo_baixo_y`: Vertical offset of the screw hole on the base.
*  `lado_esquerda`: A boolean parameter to create a mirrored copy of the piece when set to true.

I'd like all of this implemented in OpenSCAD with a single parametric module. Please ensure the generated code is properly formatted and easy to read. The code should also be efficient and avoid unnecessary calculations. Could you please generate the `*.scad` file(s) for this design? It's fine if you need to create multiple files. I also would like to use the BOSL2 library for convenience, but not as a hard requirement. Let me know if you have any questions.

[Assistant]
SuporteParaORolo.scad:
```
grossura_Da_Peca = 6;
grossura_Da_Barra_Superior = 7.7;
altura_Do_Apoio_Alto = 10;
altura_Do_Apoio_Baixo = 15;
profundudade_Maxima_Da_Barra_Superior = 26;
distancia_Superior_Reta = 50;
distancia_Inferior_Reta = 80;
tamanho_Da_Aste_Que_Sobe = 110;
raio_Do_Furo = 4;
borda_Do_Furo_Pra_Fora = 10;
borda_Do_Furo_Pra_Cima = 10;
tamanho_Da_Lingueta = 10;
grossura_Da_Lingueta = 2;
raio_Do_Furo_Da_Lingueta = 1.5;
esquerda = false; // [true, false]

alturaTotal = altura_Do_Apoio_Baixo + altura_Do_Apoio_Alto + grossura_Da_Barra_Superior;
alturaDaAsteQueSobe = sqrt(alturaTotal*alturaTotal + (distancia_Inferior_Reta-distancia_Superior_Reta)*(distancia_Inferior_Reta-distancia_Superior_Reta));
anguloDaAste = acos(alturaTotal/alturaDaAsteQueSobe);

if(esquerda) {
	mirror([0,1,0]) peca();
} else {
	peca();
}

module peca(){
difference(){
union() {
	cube([profundudade_Maxima_Da_Barra_Superior, altura_Do_Apoio_Baixo,grossura_Da_Peca]);

	translate([0,0,grossura_Da_Peca])
		difference() {
			cube([grossura_Da_Lingueta, altura_Do_Apoio_Baixo, tamanho_Da_Lingueta]);
			translate ([-0.1, altura_Do_Apoio_Baixo/2, tamanho_Da_Lingueta/2])
				rotate ([0,90,0])
					cylinder (h = grossura_Da_Peca*2, r=raio_Do_Furo_Da_Lingueta, $fn=30);
		}

	translate([0,(altura_Do_Apoio_Baixo+grossura_Da_Barra_Superior),0])
		cube([profundudade_Maxima_Da_Barra_Superior,altura_Do_Apoio_Alto,grossura_Da_Peca]);
	translate([0,(altura_Do_Apoio_Baixo+grossura_Da_Barra_Superior),grossura_Da_Peca])
		difference () {
			cube([profundudade_Maxima_Da_Barra_Superior,grossura_Da_Lingueta,tamanho_Da_Lingueta]);
			translate ([profundudade_Maxima_Da_Barra_Superior/2, -0.1, tamanho_Da_Lingueta/2])
				rotate ([-90,0,0])
					cylinder (h = grossura_Da_Peca*2, r=raio_Do_Furo_Da_Lingueta, $fn=30);
		}

		difference() {translate([profundudade_Maxima_Da_Barra_Superior,0,0])
			cube([distancia_Inferior_Reta-profundudade_Maxima_Da_Barra_Superior,altura_Do_Apoio_Baixo+grossura_Da_Barra_Superior+altura_Do_Apoio_Alto,grossura_Da_Peca]);
			translate([profundudade_Maxima_Da_Barra_Superior,altura_Do_Apoio_Baixo+grossura_Da_Barra_Superior/2,-0.1])
				cylinder (h = grossura_Da_Peca*2, r=grossura_Da_Barra_Superior/2, $fn=30);
		}

	translate([distancia_Inferior_Reta,0,0])
		rotate([0,0,anguloDaAste])
			difference() {
				union() {
					cube([tamanho_Da_Aste_Que_Sobe,alturaDaAsteQueSobe,grossura_Da_Peca]);
					translate([tamanho_Da_Aste_Que_Sobe-borda_Do_Furo_Pra_Fora,alturaDaAsteQueSobe-borda_Do_Furo_Pra_Cima,0])
						cylinder (h = grossura_Da_Peca*1.5, r=raio_Do_Furo*3, $fn=30);
				}
				translate([tamanho_Da_Aste_Que_Sobe-borda_Do_Furo_Pra_Fora,alturaDaAsteQueSobe-borda_Do_Furo_Pra_Cima,-grossura_Da_Peca])
					rotate([0,0,90-anguloDaAste])
						union () {
							%cylinder (h = 5, r=75+55/2, $fn=30);
							cylinder (h = grossura_Da_Peca*3, r=raio_Do_Furo);
							translate([0,-raio_Do_Furo,0])
								cube([raio_Do_Furo*10,raio_Do_Furo*2,grossura_Da_Peca*3]);
						}
			}
}

translate([distancia_Superior_Reta,0,0])
	rotate([0,0,anguloDaAste]){
		translate([0,-100,-0.1]){
			cube([200,100,grossura_Da_Peca*3]);
		}
	}

}
}
```


[User]
Hey, I'm looking for a way to organize things using old pill bottles, and I saw this really cool thing on Thingiverse that uses brackets to hold them together. I'd love to have something similar, but I'd like it to be fully parametric so I can easily tweak it for different bottle sizes and layouts.

Basically, I need a system of interlocking brackets that can hold standard pill bottles. I'd like to be able to generate a single bracket, a cluster of three brackets joined in a triangle, or a stand made of a variable number of connected half-brackets. I need to be able to specify the pill bottle radius, and I'd prefer to have the option of either having the hex bracket size scale proportionally with the bottle size, or to set the bracket size independently. This is important so I can mix different bottle sizes in the same bracket system.

Here are the specific parameters I would like to be able to control:

*   **`bracket_to_print`**: An integer that will select which configuration to print. 1 for a single hex bracket, 2 for a triple hex bracket set, and 3 for a stand.

*   **`stand_hexes`**: An integer indicating how many half-hexes to include when generating a stand. Only used when `bracket_to_print` is 3.

*   **`bot_rad`**: The radius of the pill bottle in millimeters.

*   **`hex_to_bot`**: A boolean (1 or 0). If 1, the hex bracket size is proportional to the bottle size, if 0, the hex size is determined independently.

*   **`hex_bot_rad`**: The pill bottle radius to use for the bracket size when `hex_to_bot` is set to 0. This allows you to use different size pill bottles in the same system.

*  **`rim`**: The extra edge around the pill bottle opening in mm.

*   **`thick`**: The thickness of the bracket material in mm.

*   **`expansion`**:  A factor to adjust the linkage indents. Something between 1.0 and 1.45.

I’d also want to be able to adjust the `$fn` variable.

For the linkages between brackets, I like the idea of using the triangle shapes with extrusions and indentations. These seem like they would work well to connect the different bracket types. It should all be generated in OpenSCAD. I don't think I need any special libraries for this. Can you create that for me?

[Assistant]
PillBottle_Bracket_System_1-0.scad:
```
//*************************************************
// Pill Bottle Bracket System
// 2014 - Tim Deagan (thingiverse:tdeagan)
// http://slamdanz.com
//
// interlocking set of brackets to use standard pill
// 		bottles as a storage solution
//
// - change commenting to print a single bracket, three brackets
//		joined in a triangle or a flat edged stand
//
// - configurable hex_to_bot option to either:
//		a) make the bracket proportional to the pill bottle
//		b) set the bracket size independently of the bottle size
//
//		option b allows mixing different size pill bottles in the same
//		set of brackets
//
//*************************************************

//========================
// configurable variables (units in mm)
//========================

// Select which thing to make; 1= Single Hex, 2= Triple Hex, 3= Stand
	bracket_to_print = 2;	//[1,2,3]

// if printing a stand, how many half-hexes to print
	stand_hexes = 2; //[1,2,3]

// radius of pill bottle
	bot_rad = 25; 	//[25,19.5]

// Should the hex size be proportional to bottle size? yes=1, no=0
	hex_to_bot = 1; 		//[1,0]

// if hex_to_bot = 0 (no) then enter bottle radius to use for hex size
	hex_bot_rad = 25; //[25,19.5,16.5]

// extra edge around pill bottle
	rim = 4;

// part thickness
	thick = 4;

// expansion factor for linkage indents, closer to 1.0 means tighter
// fit between parts.  Flash on first layer or other factors may require
// a larger expansion, rarely larger than 1.45
	expansion = 1.35;

// number of circle segments
	$fn = 100;

//========================
// derived variables
//========================

hex_h = (hex_to_bot == 1)
	? ((bot_rad + rim) * 2)
	: ((hex_bot_rad + rim) * 2);	// internal hex height
hex_s = hex_h/sqrt(3);				// length of internal hex side
hex_d = hex_s * 2; 			// internal hex length across vertices
ltri_h = sqrt(3) / 2 * hex_s;	// link triangle height
ltri_c = hex_s * .289;				// link triangle center offset

//###############################################################
//### MAIN CODE SECTION (uncomment desired output) ##############
//###############################################################

if (bracket_to_print == 1)	// single hex bracket
	bracket(0,0);

if (bracket_to_print == 2)	// joined set of three brackets
	tri_set();

if (bracket_to_print == 3)
// extensible stand for brackets (based on hex size)
// change argument to set number of joined half hexes
	stand(stand_hexes);

//###############################################################
module hexagon(){
	color("red")
	difference(){
		cube([hex_d,hex_d,thick], center= true);

		for (i=[0:5]){
			rotate(i*360/6,[0,0,1])
			translate([hex_s,0,-(thick*1.1)/2])
				rotate([0,0,30])
				cube([hex_d * .66,hex_d * .66,thick*1.1]);
		}
	}
}

//---------------------------
module hex_holder(x,y){
// internal hexagon with pill bottle hole cut out

	difference(){
		hexagon();
		cylinder(h=thick*2,r=bot_rad, center=true);
	}
}

//---------------------------
module linkage(rot) {
// constructs a triangle with one extrusion and one indent
// three combine at hex intersection to form a link triangle

	rotate([0,0,rot])
	union(){
		difference() {
			// cut down rectangle to triangle-----
			translate([0,hex_s/2-ltri_c,0])
				cube([hex_s, hex_s, thick], true);

			translate([hex_s/2,-ltri_c,0])
			rotate([0,0,60])
			translate([0,0,-(thick*1.1)/2])
				cube([hex_d, hex_s, thick*1.1]);

			translate([-hex_s/2,-ltri_c,0])
			rotate([0,0,30])
			translate([0,0,-(thick*1.1)/2])
				cube([hex_d, hex_s, thick*1.1]);
			//-------------------------------------

			// remove indent
			translate([-hex_s/8,-ltri_c/2,0])
			rotate([0,0,30])
				union(){
					translate([0,(ltri_c/8),0])
					scale([expansion,1,1])
						cube([ltri_c/4,ltri_c/4,thick*1.1], center = true);

					translate([0,-(ltri_c/8),-(thick*1.1)/2])
					scale([expansion,expansion,1])
						cylinder(h=thick*1.1, r=ltri_c/4);
			}
		}

		// add extrusion
		rotate([0,0,120])
		translate([-hex_s/8,-ltri_c/2,0])
		rotate([0,0,30])
			union(){
				translate([0,(ltri_c/8),0])
					cube([ltri_c/4,ltri_c/4,thick], center = true);

				translate([0,-(ltri_c/8),-thick/2])
					cylinder(h=thick, r=ltri_c/4);
			}
	}

}//----------------------------
module bracket(x,y){
// adds the linkage to each of the sides of the hex
// long side of linkage mates with side of internal hex

	translate([x,y,0])
	union(){

		hex_holder(0,0);

		for (i=[0:5]){
			rotate(i*360/6,[0,0,1])
			translate([hex_s,(ltri_h/2)+ltri_c/2,0])
				linkage(300);
		}
	}
}

//-------------------------------
module tri_set(){
// unions three brackets into a triangular set, fills in the gaps

	union(){
		// three brackets in a triangle
		bracket(0,0);
		bracket(hex_d,0);
		bracket(hex_s,hex_h);

		// fill in link triangle
		translate([hex_s,ltri_h-ltri_c,0])
			cylinder(h=thick, r=ltri_c+rim, center= true);

		// fill in each of three seams between brackets
		translate([hex_s,ltri_h-ltri_c,-thick/2])
		rotate([0,0,150])
		mirror([0,1,0])
		translate([0,-1,0])
			cube([(ltri_h-ltri_c)*2,hex_s-bot_rad+1,thick]);

		translate([hex_s,ltri_h-ltri_c,-thick/2])
		rotate([0,0,270])
		mirror([0,1,0])
		translate([0,-1,0])
			cube([(ltri_h-ltri_c)*2,hex_s-bot_rad+1,thick]);

		translate([hex_s,ltri_h-ltri_c,-thick/2])
		rotate([0,0,390])
		mirror([0,1,0])
		translate([0,-1,0])
			cube([(ltri_h-ltri_c)*2,hex_s-bot_rad+1,thick]);
	}
}

//----------------------------------
module stand(cnt){
// constructs a radius'd bottom stand of cnt number half hexes

	union(){
		difference(){
			union(){
				for (i = [ 0 : (cnt-1)]){
					bracket(hex_s+(hex_d*i),0);

					//restore center
					translate([hex_s+(hex_d * i),0,0])
						cylinder(h=thick,r=bot_rad+rim, center=true);

					//if more then one, fill in seam between brackets
					if (i > 0) {
						translate([hex_d*i,ltri_h-ltri_c,-thick/2])
						rotate([0,0,270])
						translate([0,-1,0])
							cube([(ltri_h-ltri_c),hex_s-bot_rad+1,thick]);
					}
				}
			}

			//cut off the bottom half
			translate([-((hex_d*1.5)/2),-(hex_d*1.5),-thick*5])
				cube([((hex_d*1.5)*(cnt))+hex_d,hex_d*1.5,thick*10]);
		}

		// add a nice rounded edge (aka radius) along bottom
		rotate([0,90,0])
			cylinder(h=hex_d*cnt, r=thick/2);
	}
}
```


[User]
Hi, I'm looking to create a parametric design for an oloid, and I've seen a version that I really like. It's got the basic oloid shape, but it also has a cylindrical hole through the middle, which is very cool. I'd like to be able to control the overall size of the oloid, the size of the hole, and even the slope of the hole. It would also be great to choose between making a full oloid or a half one, where the half one is cut along the base plane.

Here's a summary of the parameters I'd like to control:

*   **Overall Size:** This would be determined by the radius of the initial circles used to form the oloid.
*   **Hole Size:** This would be the radius of the cylindrical hole. If set to 0, it should produce a solid oloid with no hole.
*   **Hole Slope:** This parameter would control the slope of the hole's cylinder, relative to the axis of the cylinder.
*   **Oloid Type:**  I need an option to generate either a full oloid, or a half oloid which has a flat base.

Also, the design used a sort of 'offset ratio' of the two disks of 1.414. I'd like that to be a variable too.

Finally, I need to use the "hull()" function, as this appears to work perfectly with the base oloid shapes.

Could you generate an OpenSCAD file (or files, if needed) that meets these requirements?

[Assistant]
oloid-holey.scad:
```
// half or full oloid
form = "full";  // [half, full ]
// radius of one circle
radius=20;
// radius of hole - 0 for solid
hole_radius=8;
// % slope of hole
hole_slope= 30;
// offset ratio - 1 for true oloid, 1.414 (sqrt(2)for 2 circle roller
offset_ratio =  1.414;

module d(r) {
  cylinder(r1=r,r2=0,h=eps);
}

module disk(r){
  d(r);rotate([0,180,0]) d(r);
}

module hole(r,slope) {
   translate([0,0,-1]) cylinder(r1=r,r2=r+slope,h=100);
   rotate([0,180,0])
      translate([0,0,-1]) cylinder(r1=r,r2=r+slope,h=100);
};

module oloid(radius,offset_ratio,hole_radius,hole_slope){
  difference() {
     hull(){
      disk(radius);
      rotate([90,00,0]) translate([radius*offset_ratio,0,0])
         disk(radius);
     }
     hole(hole_radius,hole_slope);
     rotate([90,00,0]) translate([radius*offset_ratio,0,0])
        hole(hole_radius,hole_slope);
 }
}
module ground() {
   translate([0,0,-100]) cube([200,200,200], center=true);

}

module ruler(n) {
   for (i=[0:n-1])
       translate([(i-n/2 +0.5)* 10,0,0]) cube([9.8,5,2], center=true);
}

eps=0.1;
$fn=50;

if (form =="half")
     difference() {
       oloid(radius,offset_ratio,hole_radius,hole_slope);
       ground();
    }
else
     oloid(radius,offset_ratio,hole_radius,hole_slope);

*ruler(10);
```


[User]
I'm looking to design a nozzle that lets me inflate things like sleeping mats and inflatable kayaks using a large plastic bag as a pump. The idea is to create a 3D-printed adapter that fits onto the end of a wide-mouth plastic bottle. You then cut a hole in the bottle cap, screw the cap onto the bottle end, and secure the bottle top-end with the nozzle attached to the corner of a large plastic bag with tape, making it airtight. The nozzle will be the interface between the bottle and the item being inflated.

Here's what I need:

*   **Core Components:**
    *   **Plug:** A cylindrical section that fits into the bottle opening. This needs to be parametric for diameter and length.
    *   **Shoulder:** A wider cylindrical section that connects the plug to the nozzle, acting as a transition. This also needs to be parametric for both diameter and width.
    *   **Nozzle:** A main cylindrical section where air flows, which tapers from a slightly wider edge down to a smaller diameter and is parametric for the wider edge radius, the narrower edge radius, and the length. This includes a lip at the narrower end. The lip is a small curved piece on the outside of the nozzle to help it fit securely into the inflation valve.
*   **Supports:**
    *   Optional perimeter supports. These are small cylinders connecting the shoulder to the plug. The user should be able to specify the number of supports (0 for no support) and their radius.
*   **Key Parameters:**
    *   `throat_od`: Outer diameter of the nozzle (excluding lip).
    *   `throat_length`: Total length of the nozzle (including the lip).
    *   `plug_od`: Outer diameter of the plug (bottle insertion part).
    *   `plug_length`: Length of the plug.
    *   `support_count`: Number of perimeter supports around the shoulder. 0 for no supports.
    *   `lip_width`: Width of the lip on the nozzle.
    *   `shoulder_width`: Width of the shoulder section.
    *   `wall_thickness`: Thickness of the nozzle and plug walls.

I'd like to have everything controlled through these parameters.  I'm happy for the $fn parameter to be hard coded to a high value like 50 - but it should be in there, and I'd like to see the following derived values also included:

* `throat_or`: Radius of the nozzle (excluding lip) derived from throat\_od
* `plug_or`: Radius of the plug derived from plug\_od
* `shoulder_or`: Radius of the shoulder.  This should be a function of both `plug_or` and `shoulder_width` *and* `throat_or`, `lip_width` and `shoulder_width`. Whichever calculation results in the largest radius should be chosen.

The final design needs to be a single file and I need to subtract out the internal volume to leave a hollow nozzle. I'd be very happy for you to produce an initial design that includes these features. Let me know if you need anything else!

[Assistant]
SackPumpNozzle2.scad:
```
/////////////////////////////////////////////////////////////////////////
//
//  'Sack Pump Nozzle' by Chris Molloy (http://chrismolloy.com/)
//
//  Released under Creative Commons - Attribution - Share Alike licence
//
/////////////////////////////////////////////////////////////////////////

// Outer diameter of tube (excluding lip)
throat_od = 29;

// Length of tube (including lip)
throat_length = 9;

// Outer diameter of plug (the bit that fits into bottle)
plug_od = 32;

// Length of plug
plug_length = 9;

// Number of perimeter supports (or zero = no support)
support_count = 30;

/* Hidden */
// Tweak if you want...
lip_width = 1.5;
shoulder_width = 1.5;
wall_thickness = 1.5;
$fn = 50;

// Leave these alone...
throat_or = throat_od / 2;
plug_or = plug_od / 2;
shoulder_or = max(plug_or + shoulder_width, throat_or + lip_width + shoulder_width);

difference() {
  union() {
    // plug
    cylinder(h = plug_length, r = plug_or);

    // shoulder
    translate([0, 0, plug_length]) {
      cylinder(h = shoulder_width, r = shoulder_or);
    }

    // nozzle
    translate([0, 0, plug_length + shoulder_width]) {
      cylinder(h = throat_length, r1 = throat_or + lip_width, r2 = throat_or);

      // lip
      translate([0, 0, throat_length - lip_width]) {
        rotate_extrude(convexity = 10) {
          translate([throat_or, 0, 0]) {
            circle(r = lip_width);
          }
        }
      }
    }

    // shoulder supports
    if (support_count > 0) {
      for (aa = [0: 360 / support_count: 359.9]) {
        rotate([0, 0, aa]) {
          translate([shoulder_or - 0.5, 0, 0]) {
            union() {
              cylinder(h = plug_length - 0.5, r = 0.5);
              translate([0, 0, plug_length - 0.5]) {
                sphere(r = 0.5);
              }
            }
          }
        }
      }
    }
  }

  // hole
  translate([0, 0, -5]) {
    cylinder(h = plug_length + shoulder_width + throat_length + 10, r = min(plug_or, throat_or) - wall_thickness);
  }
}

```


[User]
I'd like to create a customizable snowflake generator in OpenSCAD. The snowflake should have a central hub with branches radiating outwards, and each branch should itself have smaller, angled branches.

Here's a breakdown of the parameters I'd like to control:

*   **`Nombre_de_bras`**: The number of main branches extending from the center (e.g., 6 for a standard snowflake).
*   **`Longueur_de_la_branche`**: The length of the main branch segments.
*   **`Angle_des_branches`**: The angle at which the smaller branches extend from the main branch. It would be great if this could have a bit of randomness to make each branch unique, perhaps by multiplying by a `germe` factor and the sine of `i`.
*   **`Epaisseur_des_branches`**: The thickness of the smaller branches.
*  **`Epaisseur`**: the thickness of the whole flocon
*   **`Nombre_de_branches`**: The number of smaller branches on each main branch. This should be limited, maybe less than 40.
*   **`germe`**: A seed value, between 1 and 7, that influences the randomness of branch angles.

The overall structure should be:

1.  A central hub, a cylinder to which the main branches attach.
2.  Main branches extending from the hub, arranged symmetrically.
3.  Each main branch has smaller branches that come out at an angle that is influenced by the `Angle_des_branches`, `germe`, and the index `i` of each smaller branch.

I'd like for the structure to have a little bit of randomness, but also a lot of consistency.

Finally, I'd like the entire thing to be within a difference operation so that I can carve away a cylinder from the middle of the snowflake.

Could you generate the necessary OpenSCAD code for this? I am not using any libraries so don't worry about dependencies.

[Assistant]
Flocon-parametre-2.scad:
```
//Paramètres commun d'un flocon de neige

Nombre_de_bras = 6;
Longueur_de_la_branche =30;
Angle_des_branches = 24;
Epaisseur_des_branches = 2;
Epaisseur = 2;
Nombre_de_branches = 5; //inférieur à 40
germe =7; //un nombre entre 1 et 7

module tree(Longueur_de_la_branche,Angle_des_branches, Epaisseur_des_branches, Epaisseur,Nombre_de_branches,germe){
	module half_tree(){
		cube([Epaisseur_des_branches/2,Longueur_de_la_branche,Epaisseur]);

		for ( i = [1:Nombre_de_branches]){
			translate([0, (Longueur_de_la_branche-1.3)*cos(i*13), 0])
			rotate(Angle_des_branches*(germe+sin(i*15)))
			cube([Longueur_de_la_branche*sin(i*(2+germe))+0.5, Epaisseur_des_branches, Epaisseur]);
		}
	}

	half_tree(Longueur_de_la_branche, Angle_des_branches,Epaisseur_des_branches, Epaisseur,Nombre_de_branches, germe);
	mirror()half_tree(Longueur_de_la_branche, Angle_des_branches, Epaisseur, Nombre_de_branches, germe);
}

module snowflake(Nombre_de_bras, Longueur_de_la_branche, Angle_des_branches, Epaisseur_des_branches, Epaisseur, Nombre_de_branches, germe){
	hole_dist = Longueur_de_la_branche;
	translate([0,Longueur_de_la_branche,0])cylinder(h=Epaisseur, r=Longueur_de_la_branche*sin(1*(2+germe))+Epaisseur_des_branches, $fn=10);
		for ( i = [0:Nombre_de_bras-1]){
			rotate( i*360/Nombre_de_bras, [0,0,1])
			tree(Longueur_de_la_branche,Angle_des_branches, Epaisseur_des_branches, Epaisseur,Nombre_de_branches,germe);
		}
}

translate([Longueur_de_la_branche,Longueur_de_la_branche,0]){
difference(){

snowflake(
	Nombre_de_bras,
	Longueur_de_la_branche,
	Angle_des_branches,
	Epaisseur_des_branches,
	Epaisseur,
	Nombre_de_branches,
	germe
);
translate([0,Longueur_de_la_branche,-2])cylinder(h=Epaisseur*2, r=Longueur_de_la_branche*sin(3), $fn=10);
}
}

```


[User]
Okay, I need an OpenSCAD design for a ball mold, kind of like the one I saw online, but I want to make sure it's fully parametric.

Basically, it's a two-part mold that creates a hollow sphere. I'd like to be able to control:

*   **The diameter of the sphere:** This is the key parameter, so it needs to be easily adjustable.
*   **The thickness of the mold:** The walls of the mold itself need to be a parameter.
*   **Whether or not there's a lip on one half:** It would be great if one half of the mold had a small lip that the other half fits into, for easier alignment. This needs to be a boolean on/off kind of option.

The mold halves should be roughly hemispherical, with a flat base for sitting on a surface. I think a cylinder that's the same diameter as the mold and about half of the sphere's radius in height would work for that.

I'd also like to have a way to specify the rendering quality in the OpenSCAD file.

Could you create the OpenSCAD file(s) for me? Thanks!

[Assistant]
BallMould.scad:
```
// Oogoo Ball Mould
//TrevM 22/11/2014

/* [Global] */

// What quality?
$fn = 110;	// [20,30,40,50,60,70,80,90,100]

// Ball Diameter (mm)?
dia = 110;

// Mould thickness (mm)?
th = 2;

// lip?
lip = 1;	// [0,1]

/* [Hidden] */

rad = dia / 2;			// radius of ball
dx = dia + (th * 2);	// diameter of mould (with thickness)
rx = dx / 2;			// radius of mould

half(lip);
//full();

module full()
{
	translate([-rx-(th*2),0,0]) half(0);
	translate([ rx+(th*2),0,0]) half(1);
}

module half(lip)
{
	br=rad*3/4;
	difference()
	{
		union()
		{
			translate([0,0,rx]) sphere(r=rx);	//outside mould
			cylinder(r=rad*3/4,h=rad);			//base
			if (lip == 1)
			{
				translate([0,0,rx-th]) cylinder(r=rx+th,h=th*2);	//lip
				translate([0,0,rx-(th*2)])	cylinder(r1=rx-(th/2),r2=rx+th,h=th+0.1); //lead in
			}
		}
		translate([0,0,rx]) sphere(r=rad);	//inside mould
		translate([0,0,rx]) cylinder(r=rx+0.3,h=rx+0.1);	// remove top
	}
}

```


[User]
Hey, I'm trying to make a customizable snowflake generator in OpenSCAD. I really like the concept of the mathgrrl design, where you sketch a 2D shape that gets mirrored and rotated to make a snowflake, but I want to make it more versatile.

Here's what I'm thinking: I want the user to be able to define the initial 2D shape using a series of points and paths, like in the original design. I would like this shape to be editable via the customizer. It also needs to be able to specify parameters for:

*   **Thickness:** The thickness of the snowflake (in mm).
*   **Size:** The overall diameter of the snowflake (in mm).
*   **Number of Rotations:** the number of rotation/mirror pairs for the snowflake, which would be equivalent to the number of "arms" a snowflake would have.
*   **Loop:** A boolean for adding a loop for hanging. It should create a circle at the top of the snowflake that the user can use to hang it up. I want the user to control the size of the circle and loop with user parameters. The loop should have a small inner cut so the loop is actually a loop and not just a circle.

The user should also be able to choose to have no loop. Finally, I'd like a preview of a guide triangle like the original code. The design will be in white, and the guide box should be a light grey. It would also be helpful to show a guide box. It would be fantastic if this was a fully parametric design.

Could you generate the necessary OpenSCAD files? I don't need any external libraries.

[Assistant]
mathgrrl_snowflakecutter.scad:
```
// mathgrrl customizable snowflake cutter

// thanks atartanian for suggesting how to speed up the code
// thanks anoved for commenting your lathe code so well for me to learn

// preview[view:south, tilt:top]

/* [Cut] */

// Sketch the design that will be mirrored and rotated to make the snowflake. Only the parts of your design that end up inside the green triangular region will be used; anything outside of that will be truncated.
cuts = [[[0,0],[.124,0],[.075,.2],[.25,.35],[.225,.375],[.06,.235],[.03,.35],[.1,.4],[.075,.425],[.025,.39],[.02,.5],[0,.5],[0,.275],[.05,.125],[0,.05]],[[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14]]]; // [draw_polygon]

/* [Parameters] */

// (print height, in mm)
thickness = 1.2;

// (diameter of enclosing circle, in mm)
size = 40;

// (for hanging)
loop = 0; //[0:No,1:Yes]

/////////////////////////////////////////////////////////////////////////
// renders

// guide triangle
color("lime")
%linear_extrude(height=2)
union(){
    hull(){
        circle(.1);
        translate([19.9/sqrt(3),19.9,0]) circle(.1);
    }
    hull(){
        translate([19.9/sqrt(3),19.9,0]) circle(.1);
        translate([0,19.9,0]) circle(.1);
    }
    hull(){
        translate([0,19.9,0]) circle(.1);
        circle(.1);
    }
}

// guide box
color([.8,.8,.8])
translate([0,0,-1]) %cube([40,40,1],center=true);

// tiny dot to avoid errors
cylinder(r=.1,h=.1);

// make the flake!
color("white")
difference(){
	union(){
		// draw the snowflake
		snowflake();
		// also draw outer loop, if desired
		if (loop==1){
			translate([0,size/2-.1*size,0])
			linear_extrude(height=thickness)
			circle(.1*size,$fn=24);
		}
	}
	// take away inner loop, if desired
	if (loop==1){
		translate([0,size/2-.1*size,-1])
		linear_extrude(height=thickness+2)
		circle(.05*size,$fn=24);
	}
}

/////////////////////////////////////////////////////////////////////////
// make snowflake out of cut piece

module snowflake(){
	scale(size)
		for (i=[0:5]){
			rotate(60*i,[0,0,1])
				union(){
					piece();
					mirror([1,0,0]) piece();
				}
		}
}

/////////////////////////////////////////////////////////////////////////
// make the cut piece from the sketch

module piece(){
	intersection(){
		linear_extrude(height=thickness/size)
		polygon(
			points=cuts[0],
			paths=cuts[1]
		);
		linear_extrude(height=thickness/size)
		polygon(
			points=[[0,0],[.5*cos(60),.5*sin(60)],[0,.5]],
			paths=[[0,1,2]]
		);
	}
}

```


[User]
I'm looking for an OpenSCAD design for corner clips to hold a glass plate onto a 3D printer bed. I want the design to be parametric so I can easily adjust it for different printer models and glass sizes.

The basic idea is this: the clips should fit onto the corners of the printer's bed, extending outwards to support a larger glass plate.  The glass sits on top of the bed, and the clips wrap around the sides, kind of holding the glass in place. The clips should be designed so that binder clips can easily be used to clamp the glass, but the clips themselves should be a little smaller than most binder clips, so they won't get in the way of the extruder. I guess that means the edges of the clips should be thin, and the clips should be sturdy.

Here's some specific parameters that should be included:

*   **Print bed dimensions:**
    *   `bedX`: Length of the print bed side-to-side
    *   `bedY`: Length of the print bed front-to-back
    *   `bedZ`: Thickness of the print bed
    *   `screwInset`: Distance from the edge of the bed to the center of the corner screw
    *   `screwD`: Diameter of the screw
    *    `nutD`: Diameter of the nut
*   **Glass plate dimensions:**
    *   `glassX`: Length of the glass plate (long edge)
    *   `glassY`: Width of the glass plate (short edge)
    *   `glassZ`: Thickness of the glass plate
*   **Clip parameters:**
     *   `cornerThick`: Thickness of the main corner portion of the clip
     *   `cornerThin`: Thickness of the thin edge that allows for binder clips
    *   `cornerHeight`: Total height of the clip (should account for bed, glass, and some buffer)
    *   `support`: Support thickness, for printing ease. 0 would mean no support, and something like 0.5 would provide support that's easy to remove.
*   **Clearance:**
    *   `gap`: Clearance between parts

The design should generate two clip types: left and right. These should be mirrored along the X axis. It might be good to have an option to show just the clips, and just the printer, for checking measurements. Or maybe a setting for showing all four clips at once for previewing.

So I'm basically looking for a parametric corner clip design that considers these dimensions and that accounts for the printer bed, glass plate, and a clearance gap. I think I'd prefer to use the BOLTS library if possible, but if some other library is more applicable feel free to suggest that one as well.

[Assistant]
CornerClip.scad:
```
/* [Options] */

// Part
part=0; // [0:Preview, 1:Left, 2:Right]

// Support thickness
support = 1; // 0 = no support, 0.5 = easy to remove

/* [print bed dimensions] */

// Print bed size, side-to-side
bedX = 225; // Replicator 225, FlashForge 230
// Print bed size, front-to-back
bedY = 154; // Replicator 154, FlashForge 154
// Print bed thickness
bedZ = 5.25; // Replicator 5.25 FlashForge 9
// From edge to center of corner screw
screwInset = 4; // Replicator 4, FlashForge 4
// Diameter of screw
screwD = 2.85;
screwR = screwD/2;
// Diameter of nut
nutD = 6.5;
nutR = nutD/2;

echo(str("Bed dimensions [",bedX,", ", bedY,", ",bedZ,"]"));

/* [Glass plate dimensions] */
// Long edge
glassX = 254; // 10 in = 254 mm
// Short edge
glassY = 203.2; // 8.5 in = 203.2 mm
// Thickness
glassZ = 2.38125; // 3/32 in = 2.38 mm

// Hidden stuff (from Customizer)

// clip above glass
clipLen = 0*0;
clipHeight = 0*0;

// clip thickness beyond edge of glass
cornerThick = 3*1;
cornerThin=1.5*1;
cornerHeight = cornerThick+bedZ+glassZ+clipHeight;

g = 0.01*1;
// Clearance between parts
gap=0.4*1;

if (part==0) {
	%printerStuff();
	for (xm=[0:1])
		mirror([xm,0,0])
		for (ym=[0:1])
			mirror([0,ym,0])
				color("blue") cornerClip();
	}
if (part==1) translate([bedX/2,bedY/2,0]) cornerClip();
if (part==2) mirror([1,0,0]) translate([bedX/2,bedY/2,0]) cornerClip();

//magnetHolder();

module magnetHolder() {
	difference() {
		union() {
			cube([12,75,3],center=true);
			translate([0,75/2,0]) cylinder(h=3, r=4+2, center=true);
		}
	translate([0,75/2,-.5]) cylinder(h=4, r=4+.4);
	}
}

module printerStuff() {
	color("grey") translate([0,0,bedZ/2]) cube([bedX+2*gap,bedY+2*gap,bedZ+g], center=true);
	translate([0,0,bedZ+glassZ/2]) cube([glassX+2*gap,glassY+2*gap,glassZ+g+gap], center=true);
	translate([0,0,bedZ+glassZ]) cube([glassX-2*clipLen,glassY-2*clipLen+g,glassZ], center=true);

	screw();
	mirror([1,0,0]) screw();
	mirror([0,1,0]) screw();
	mirror([0,1,0]) mirror([1,0,0]) screw();
	}

module screw() {
	color("silver") translate([-bedX/2+screwInset,-bedY/2+screwInset,-5]) {
		cylinder(r=screwD/2+gap, h=10, $fn=32);
		translate([0,0,0-cornerThin]) cylinder(r=nutD/2+gap, h=5, $fn=6);
		}
	}

module cornerClip() {
	difference() {
		clip();
		printerStuff();
		}
	}

module clip() {
	lenY = glassY/2-bedY/2+screwInset+cornerThick;
	lenX = glassX/2-bedX/2+screwInset+cornerThick;
	translate([-bedX/2+screwInset,-bedY/2+screwInset,-cornerThick+cornerHeight/2]) {
		difference() {
			cube([20,2*lenY,cornerHeight+gap], center=true);
		translate([-20+support,-2*lenY+support,-(cornerHeight+gap)]/2)
			cube([20-support,lenY-10-support/2,bedZ+1]);
		}
		difference() {
			cube([2*lenX,20,cornerHeight+gap], center=true);
		translate([-2*lenX+support,-20+support,-(cornerHeight+gap)]/2)
			cube([lenX-10-support/2,20-support,bedZ+1]);
		}
	}
	}
```


[User]
I need a parametric pulley system designed in OpenSCAD. I want to be able to choose whether to print just the pulley wheel, just the mounting bracket, or both together.

The pulley itself needs to have a groove for a rope. I need to be able to specify the rope diameter, and the pulley diameter should adjust accordingly.  I also need to specify the size of a bolt that will act as the shaft.

The mounting bracket needs to have a hole for the same shaft bolt, as well as two mounting holes for bolts that will secure the bracket to another surface.  I also need to be able to specify the size for those mounting bolts independently.

I would like the pulley height to be set at the rope diameter + 10mm.  The bracket needs to be properly sized to hold the pulley and should account for the chosen pulley height in it's design.

I would like to be able to change the following parameters:
- rope diameter in millimeters
- shaft bolt size (metric)
- mounting bolt size (metric)
- which part(s) to print (pulley only, mount only, or both)

The design should be clean and easy to modify in the future.  Can you provide me with the OpenSCAD code for this?

[Assistant]
Pulley.scad:
```
// Parametric Pulley

// Which part would you like to print?
printSelection = "Both";//[Pulley:Pulley only, Pulley Mount:Pulley Mount only, Both:Both]

// Choose the desired rope diameter in millimeters
ropeDiameter = 10;//[5:30]

// Choose a metric bolt size for the shaft
shaftBoltSize = 10;//[4.8:M4, 5.8:M5, 7:M6, 8:M7, 10:M8, 12:M10]

// Choose a metric bolt size for mounting
mountBoltSize = 10;//[4.8:M4, 5.8:M5, 7:M6, 8:M7, 10:M8, 12:M10]

pulleyHeight = ropeDiameter+10;

print_part();

// This module chooses which part to display
module print_part()
{
	if (printSelection == "Pulley")
	{
		translate([0,0,pulleyHeight/2]) Pulley();
	}
	else if (printSelection == "Pulley Mount")
	{
		translate([0,2*pulleyHeight+5,pulleyHeight+25])rotate([-90,0,0])PulleyMount();
	}
	else if (printSelection == "Both")
	{
		both();
	}
	else
	{
		both();
	}
}

// This module populates both parts
module both()
{
	translate([0,0,pulleyHeight/2]) Pulley();
	translate([0,2*pulleyHeight+5,pulleyHeight+25])rotate([-90,0,0])PulleyMount();
}

// The module is the pulley wheel
module Pulley()
{

	$fn = 100;
	difference()
	{
		cylinder(r = pulleyHeight, h = pulleyHeight, center = true);
		rotate_extrude(convexity = 10)
		translate([pulleyHeight+1, 0, 0])
		circle(r = ropeDiameter/2);

		// This is the hole for the shaft
		cylinder(r = shaftBoltSize/2, h = pulleyHeight+1, center = true);
	}
}

// This module is the pulley mount
module PulleyMount()
{
	$fn = 100;
	difference()
	{
		union()
		{
			translate([0, (pulleyHeight+25)/2, 0])
			cube(size = [2*pulleyHeight+25, pulleyHeight+25, pulleyHeight+20],
					center = true);
			cylinder(r= pulleyHeight+12.5, h = pulleyHeight+20, center = true);
		}
		cube(size  = [2*pulleyHeight+26,2*pulleyHeight+27.5, pulleyHeight+2.5],
				center = true);

		// This is the hole for the shaft
		cylinder(r = shaftBoltSize/2, h = pulleyHeight+26, center = true);

		// These are the holes for mounting
		translate([pulleyHeight/2+5,0,0])
		rotate([90,0,0])
		cylinder(r=mountBoltSize/2, h = 1000, center = true);

		translate([-pulleyHeight/2-5,0,0])
		rotate([90,0,0])
		cylinder(r=mountBoltSize/2, h = 1000, center = true);

	}
}

```


[User]
Hey, I'm looking to create a customizable lithophane and need some help generating the OpenSCAD code. I want to be able to specify the image file, the dimensions of the plaque, whether it has a hanging ring, and also add some text.

Here's what I'm thinking for the parameters:

**Image:**
*   `format`: This should be a dropdown with options like "square" (Carré), "standard" (Photo 4x3), and "hd" (16x9).
*   `orientation`: Another dropdown with "paysage" (landscape) and "portrait".
*   `Dimensions_de_la_plaque`: A dropdown with "grande" (large) and "petite" (small), affecting the overall size.
*   `fichier_image`: This would be a text field where I can specify the image data file (e.g., "image-surface.dat"). I'll make sure it exists.

**Plaque:**
*   `avec_un_anneau`: A dropdown - "oui" (yes) or "non", for including the hanging ring.
*   `diametre_du_trou`: A numeric field for the diameter of the hole in the ring.
*   `epaisseur_des_couches`: A numeric field for layer thickness.
*   `nombre_de_couches`: A numeric field to control the thickness via number of layers.

**Texte:**
*   `Ligne_de_texte_1` to `Ligne_de_texte_5`: Five text fields to add text lines.
*  `Grandeur_des_lettres`: Numeric field for font height.
*   `position_verticale`: Numeric field to move the text vertically.
*   `texte_en_miroir`: A dropdown - "non" or "oui" to mirror the text.

I think that covers most of what I need. Also, if you could use the `build_plate` module from `utils/build_plate.scad` for displaying a virtual build plate, and the `write` module from `write/Write.scad` to handle the text, that would be great! Thanks.

[Assistant]
Ma_Lithopanie.scad:
```
use <utils/build_plate.scad>
use <write/Write.scad>

// preview[view:south, tilt:top]

/* [Image] */
format = "Photo 4x3"; // [square:Carré, standard:Photo 4x3, hd:16x9]
orientation = "paysage"; // [paysage, portrait]
Dimensions_de_la_plaque = "grande"; // [grande, petite]
fichier_image = "image-surface.dat"; // [image_surface:100x100]

/* [Plaque] */
avec_un_anneau = "Oui"; // [oui, non]
diametre_du_trou = 10;
epaisseur_des_couches = 0.2;
nombre_de_couches = 12; // [8:20]

/* [Texte] */
Ligne_de_texte_1 = "";
Ligne_de_texte_2 = "";
Ligne_de_texte_3 = "";
Ligne_de_texte_4 = "";
Ligne_de_texte_5 = "";
Grandeur_des_lettres = 10;
position_verticale = 0; // [-80:80]
texte_en_miroir = "non"; // [non, oui]

/* [Hidden] */

// base (white) will always be 2 layers thick
min_epaisseur_des_couches = epaisseur_des_couches*2;
hole_radius = diametre_du_trou/2;
height = epaisseur_des_couches*nombre_de_couches;

//for display only, doesn't contribute to final object
build_plate_selector = 0; //[0:Replicator 2, 1:Replicator, 2:Thingomatic, 3:Manual]

//when Build Plate Selector is set to "manual" this controls the build plate x dimension
build_plate_manual_x = 100; //[100:400]

//when Build Plate Selector is set to "manual" this controls the build plate y dimension
build_plate_manual_y = 100; //[100:400]

preview_tab = "";

build_plate(build_plate_selector,build_plate_manual_x,build_plate_manual_y);

if (format == "square") {
  if (Dimensions_de_la_plaque == "grande") {
    lithopane(100, 100, 1, 1);
  } else {
    lithopane(50, 50, 0.5, 0.5);
  }
} else if (format == "Photo 4x3") {
  if (orientation == "paysage") {
    if (Dimensions_de_la_plaque == "grande") {
      lithopane(133, 100, 4/3, 1);
    } else {
      lithopane(133/2, 100/2, (4/3)/2, 1/2);
    }
  } else {
    if (Dimensions_de_la_plaque == "grande") {
      rotate([0,0,90]) lithopane(100, 133, 1, 4/3);
    } else {
      rotate([0,0,90]) lithopane(100/2, 133/2, 1/2, (4/3)/2);
    }
  }
} else if (format == "hd") {
  if (orientation == "paysage") {
    if (Dimensions_de_la_plaque == "grande") {
      lithopane(177, 100, 16/9, 1);
    } else {
      lithopane(177/2, 100/2, (16/9)/2, 1/2);
    }
  } else {
    if (Dimensions_de_la_plaque == "grande") {
      rotate([0,0,90]) lithopane(100, 177, 1, 16/9);
    } else {
      rotate([0,0,90]) lithopane(100/2, 177/2, 1/2, (16/9)/2);
    }
  }
}

module lithopane(length, width, x_scale, y_scale) {
  union() {
    // take just the part of surface we want
    difference() {
      translate([0, 0, min_epaisseur_des_couches]) scale([x_scale,y_scale,height]) surface(file=fichier_image, center=true, convexity=5);
      translate([0,0,-(height+min_epaisseur_des_couches)]) linear_extrude(height=height+min_epaisseur_des_couches) square([length, width], center=true);
    }
    linear_extrude(height=epaisseur_des_couches*2) square([length+4, width+4], center=true);

    linear_extrude(height=height+min_epaisseur_des_couches) {
  	  difference() {
  		  union() {
  	      square([length+4, width+4], center=true);
  	      if (avec_un_anneau == "Oui") {
            translate([0, width/2+hole_radius+2, 0]) circle(r=hole_radius+5);
          }
  		  }
        union() {
          square([length, width], center=true);
  	      if (avec_un_anneau == "Oui") {
            translate([0, width/2+hole_radius+2, 0]) circle(r=hole_radius);
          }
        }
  	  }
    }

    // add optional text
    rotate_text() translate([0, position_verticale, height/2]) union() {
      translate([0, 30, 0])  write(Ligne_de_texte_1, t=height, h=Grandeur_des_lettres, center=true);
      translate([0, 15, 0])  write(Ligne_de_texte_2, t=height, h=Grandeur_des_lettres, center=true);
      translate([0, 0, 0])   write(Ligne_de_texte_3, t=height, h=Grandeur_des_lettres, center=true);
      translate([0, -15, 0]) write(Ligne_de_texte_4, t=height, h=Grandeur_des_lettres, center=true);
      translate([0, -30, 0]) write(Ligne_de_texte_5, t=height, h=Grandeur_des_lettres, center=true);
    }
  }
}

module rotate_text() {
  if (texte_en_miroir == "Oui") {
    translate([0, 0, height]) rotate([0, 180, 0]) child(0);
  } else {
    translate([0, 0, 0]) rotate([0, 0, 0]) child(0);
  }
}

```
Ma_Lithopanie.scad:
```
use <utils/build_plate.scad>
use <write/Write.scad>

// preview[view:south, tilt:top]

/* [Image] */
format = "standard"; // [square:Carré, standard:Photo_4x3, hd:16x9]
orientation = "paysage"; // [paysage, portrait]
Dimensions_de_la_plaque = "grande"; // [grande, petite]
fichier_image = "image-surface.dat"; // [image_surface:100x100]

/* [Plaque] */
avec_un_anneau = "oui"; // [oui, non]
diametre_du_trou = 10;
epaisseur_des_couches = 0.2;
nombre_de_couches = 12; // [8:20]

/* [Texte] */
Ligne_de_texte_1 = "";
Ligne_de_texte_2 = "";
Ligne_de_texte_3 = "";
Ligne_de_texte_4 = "";
Ligne_de_texte_5 = "";
Grandeur_des_lettres = 10;
position_verticale = 0; // [-80:80]
texte_en_miroir = "non"; // [non, oui]

/* [Hidden] */

// base (white) will always be 2 layers thick
min_epaisseur_des_couches = epaisseur_des_couches*2;
hole_radius = diametre_du_trou/2;
height = epaisseur_des_couches*nombre_de_couches;

//for display only, doesn't contribute to final object
build_plate_selector = 0; //[0:Replicator 2, 1:Replicator, 2:Thingomatic, 3:Manual]

//when Build Plate Selector is set to "manual" this controls the build plate x dimension
build_plate_manual_x = 100; //[100:400]

//when Build Plate Selector is set to "manual" this controls the build plate y dimension
build_plate_manual_y = 100; //[100:400]

preview_tab = "";

build_plate(build_plate_selector,build_plate_manual_x,build_plate_manual_y);

if (format == "square") {
  if (Dimensions_de_la_plaque == "grande") {
    lithopane(100, 100, 1, 1);
  } else {
    lithopane(50, 50, 0.5, 0.5);
  }
} else if (format == "standard") {
  if (orientation == "paysage") {
    if (Dimensions_de_la_plaque == "grande") {
      lithopane(133, 100, 4/3, 1);
    } else {
      lithopane(133/2, 100/2, (4/3)/2, 1/2);
    }
  } else {
    if (Dimensions_de_la_plaque == "grande") {
      rotate([0,0,90]) lithopane(100, 133, 1, 4/3);
    } else {
      rotate([0,0,90]) lithopane(100/2, 133/2, 1/2, (4/3)/2);
    }
  }
} else if (format == "hd") {
  if (orientation == "paysage") {
    if (Dimensions_de_la_plaque == "grande") {
      lithopane(177, 100, 16/9, 1);
    } else {
      lithopane(177/2, 100/2, (16/9)/2, 1/2);
    }
  } else {
    if (Dimensions_de_la_plaque == "grande") {
      rotate([0,0,90]) lithopane(100, 177, 1, 16/9);
    } else {
      rotate([0,0,90]) lithopane(100/2, 177/2, 1/2, (16/9)/2);
    }
  }
}

module lithopane(length, width, x_scale, y_scale) {
  union() {
    // take just the part of surface we want
    difference() {
      translate([0, 0, min_epaisseur_des_couches]) scale([x_scale,y_scale,height]) surface(file=fichier_image, center=true, convexity=5);
      translate([0,0,-(height+min_epaisseur_des_couches)]) linear_extrude(height=height+min_epaisseur_des_couches) square([length, width], center=true);
    }
    linear_extrude(height=epaisseur_des_couches*2) square([length+4, width+4], center=true);

    linear_extrude(height=height+min_epaisseur_des_couches) {
  	  difference() {
  		  union() {
  	      square([length+4, width+4], center=true);
  	      if (avec_un_anneau == "oui") {
            translate([0, width/2+hole_radius+2, 0]) circle(r=hole_radius+5);
          }
  		  }
        union() {
          square([length, width], center=true);
  	      if (avec_un_anneau == "oui") {
            translate([0, width/2+hole_radius+2, 0]) circle(r=hole_radius);
          }
        }
  	  }
    }

    // add optional text
    rotate_text() translate([0, position_verticale, height/2]) union() {
      translate([0, 30, 0])  write(Ligne_de_texte_1, t=height, h=Grandeur_des_lettres, center=true);
      translate([0, 15, 0])  write(Ligne_de_texte_2, t=height, h=Grandeur_des_lettres, center=true);
      translate([0, 0, 0])   write(Ligne_de_texte_3, t=height, h=Grandeur_des_lettres, center=true);
      translate([0, -15, 0]) write(Ligne_de_texte_4, t=height, h=Grandeur_des_lettres, center=true);
      translate([0, -30, 0]) write(Ligne_de_texte_5, t=height, h=Grandeur_des_lettres, center=true);
    }
  }
}

module rotate_text() {
  if (texte_en_miroir == "oui") {
    translate([0, 0, height]) rotate([0, 180, 0]) child(0);
  } else {
    translate([0, 0, 0]) rotate([0, 0, 0]) child(0);
  }
}

```


[User]
Okay, so I'm looking to design a custom keyboard plate, and I'd like the design to be parametric so I can easily tweak it for future projects. I've got a couple of existing OpenSCAD files (plate.scad and SINAP.scad) that have some of the features I'm looking for, but I want something a little more robust and flexible. I'm not looking for something to be improved on existing work, but a new version which will be the final result. I'll describe what I want in terms of the features, but feel free to ask for clarification.

First off, I need it to be designed for Cherry MX style switches, using the standard 19.05mm key spacing. The holes for the switches themselves should be 14mm squares, plus cutouts for the switch clasps. Those cutouts should be parametrically adjustable in terms of height and width. I also want the option to have a more simplified cut-out, and an option to have just a 14mm square for the switch hole. The thickness of the plate should also be a parameter.

Next, I need to be able to specify the layout of the keyboard as a list of key positions and their sizes. I should be able to specify this in terms of a grid system with units of 19.05mm and the size of each key using the usual "1u" notation. For example, in my example files I have both a "myKeyboard" and a "pokerkeyboard" layout, they both consist of an array of key positions as their first value and their key size as their second value. These key positions use a grid system with [x,y] coordinates.

I need mounting holes that can be automatically placed at different positions on the plate. The locations I'm using are arbitrary, but I'd like to be able to easily change their locations and sizes. I've been using a radius and also specifying the number of facets for the circles.

I'm using stabilizers for the larger keys, and I need to be able to define the locations and sizes of those. In my code, I have a module for 'stabilizer' and a module for '2u_stabilizer' which has two stabilizers next to each other. I'd like these included and I would like them to be flexible and easy to use.

Finally, I need the overall plate shape to be a rectangle with rounded corners. In the existing code I'm achieving this using a minkowski sum. The radius of these corners needs to be adjustable as a parameter.

I think that's everything. I don't have any specific library preferences, so please use what you think is appropriate.

[Assistant]
plate.scad:
```
//Thickness of entire plate
plateThickness=3;
//Unit square length, from Cherry MX data sheet
lkey=19.05;
//Hole size, from Cherry MX data sheet
holesize=14;
//length, in units, of board
width=15;
//Height, in units, of board
height=5;
//Radius of mounting holes
mountingholeradius=2;
//height of switch clasp cutouts
cutoutheight = 3;
//width of switch clasp cutouts
cutoutwidth = 1;

//calculated vars

holediff=lkey-holesize;
w=width*lkey;
h=height*lkey;

//my custom keyboard layout layer
myKeyboard = [
//start column 0
	[[0,0],1.5],
	[[0,1],1.5],
	[[0,2],1.5],
	[[0,3],1.5],
	[[0,4],1.5],
//start column 1
	[[1.5,0],1],
	[[1.5,1],1],
	[[1.5,2],1],
	[[1.5,3],1],
	[[1.5,4],1],
//start column 2
	[[2.5,0],1],
	[[2.5,1],1],
	[[2.5,2],1],
	[[2.5,3],1],
	[[2.5,4],1.25],
//start column 3
	[[3.5,0],1],
	[[3.5,1],1],
	[[3.5,2],1],
	[[3.5,3],1],
	[[3.75,4],6.25],
//start column 4
	[[4.5,0],1],
	[[4.5,1],1],
	[[4.5,2],1],
	[[4.5,3],1],
//start column 5
	[[5.5,0],1],
	[[5.5,1],1],
	[[5.5,2],1],
	[[5.5,3],1],
//start column 6
	[[7,0],1],
	[[7,1],1],
	[[7,2],1],
	[[7,3],1],
//start column 7
	[[8,0],1],
	[[8,1],1],
	[[8,2],1],
	[[8,3],1],
//start column 8
	[[9,0],1],
	[[9,1],1],
	[[9,2],1],
	[[9,3],1],
//start column 9
	[[10,0],1],
	[[10,1],1],
	[[10,2],1],
	[[10,3],1],
	[[10,4],1],
//start column 10
	[[11,0],1],
	[[11,1],1],
	[[11,2],1],
	[[11,3],1],
	[[11,4],1],
//start column 11
	[[12,0],1],
	[[12,1],1],
	[[12,2],1],
	[[12,3],1],
	[[12,4],1],
//start column 12
	[[13,0],1],
	[[13,1],1],
	[[13,2],2],
	[[13,3],1],
	[[13,4],1],
//start column 13
	[[14,0],1],
	[[14,1],1],

	[[14,3],1],
	[[14,4],1],
];

//poker keyboard layout layer
pokerkeyboard = [
//start ROW 0
[[0,0],1],
[[1,0],1],
[[2,0],1],
[[3,0],1],
[[4,0],1],
[[5,0],1],
[[6,0],1],
[[7,0],1],
[[8,0],1],
[[9,0],1],
[[10,0],1],
[[11,0],1],
[[12,0],1],
[[13,0],2],
//start ROW 1
[[  0,1],1.5],
[[1.5,1],1],
[[2.5,1],1],
[[3.5,1],1],
[[4.5,1],1],
[[5.5,1],1],
[[6.5,1],1],
[[7.5,1],1],
[[8.5,1],1],
[[9.5,1],1],
[[10.5,1],1],
[[11.5,1],1],
[[12.5,1],1],
[[13.5,1],1.5],
//start ROW 2
[[   0,2],1.75],
[[1.75,2],1],
[[2.75,2],1],
[[3.75,2],1],
[[4.75,2],1],
[[5.75,2],1],
[[6.75,2],1],
[[7.75,2],1],
[[8.75,2],1],
[[9.75,2],1],
[[10.75,2],1],
[[11.75,2],1],
[[12.75,2],2.25],
//start ROW 3
[[   0,3],2.25],
[[2.25,3],1],
[[3.25,3],1],
[[4.25,3],1],
[[5.25,3],1],
[[6.25,3],1],
[[7.25,3],1],
[[8.25,3],1],
[[9.25,3],1],
[[10.25,3],1],
[[11.25,3],1],
[[12.25,3],2.75],
//start ROW 4
[[   0,4],1.25],
[[1.25,4],1.25],
[[2.5 ,4],1.25],
[[3.75,4],6.25],
[[10  ,4],1.25],
[[11.25,4],1.25],
[[12.5 ,4],1.25],
[[13.75,4],1.25],
];

module plate(w,h){
	cube([w,h,plateThickness]);
}

module switchhole(){
	union(){
		cube([holesize,holesize,plateThickness]);

		translate([-cutoutwidth,1,0])
		cube([holesize+2*cutoutwidth,cutoutheight,plateThickness]);

		translate([-cutoutwidth,holesize-cutoutwidth-cutoutheight,0])
		cube([holesize+2*cutoutwidth,cutoutheight,plateThickness]);
	}
}

module holematrix(holes,startx,starty){
	for (key = holes){
		translate([startx+lkey*key[0][0], starty-lkey*key[0][1], 0])
		translate([(lkey*key[1]-holesize)/2,(lkey - holesize)/2, 0])
		switchhole();
	}
}

module mountingholes(){
	translate([(1+1/3)*lkey,3.5*lkey,0])
	cylinder(h=plateThickness,r=mountingholeradius, $fn=12);

	translate([(13+2/3)*lkey,3.5*lkey,0])
	cylinder(h=plateThickness,r=mountingholeradius, $fn=12);

	translate([(6.75)*lkey,2.5*lkey,0])
	cylinder(h=plateThickness,r=mountingholeradius, $fn=12);

	translate([(6.75)*lkey,2.5*lkey,0])
	cylinder(h=plateThickness,r=mountingholeradius, $fn=12);

	translate([(14.8)*lkey,2*lkey,0])
	cylinder(h=plateThickness,r=mountingholeradius, $fn=12);

	translate([(.2)*lkey,2*lkey,0])
	cylinder(h=plateThickness,r=mountingholeradius, $fn=12);

	translate([(10)*lkey,.5*lkey,0])
	cylinder(h=plateThickness,r=mountingholeradius, $fn=12);
}

module myplate(){
	difference(){
		plate(w,h);
		holematrix(myKeyboard,0,h-lkey);
		mountingholes();
		//translate([152.5,0,0]) cube([.001,150,150]);
	}
}

module pokerplate(){
	difference(){
		plate(w,h);
		holematrix(pokerkeyboard,0,h-lkey);
		mountingholes();
	}
}

pokerplate();
```
SINAP.scad:
```
//Thickness of entire plate
plateThickness=1.5;
//Unit square length, from Cherry MX data sheet
lkey=19.2;
//Hole size, from Cherry MX data sheet
holesize=14;
//length, in units, of board
width=15;
//Height, in units, of board
height=5;
//Radius of mounting holes
mountingholeradius=1.11;
//height of switch clasp cutouts
cutoutheight = 3;
//width of switch clasp cutouts
cutoutwidth = 1;

//calculated vars

holediff=lkey-holesize;
w=width*lkey;
h=height*lkey;

//my custom keyboard layout layer
myKeyboard = [
//start column 0
	[[0,0],1.5],
	[[0,1],1.5],
	[[0,2],1.5],
	[[0,3],1.5],
	[[0,4],1.5],
//start column 1
	[[1.5,0],1],
	[[1.5,1],1],
	[[1.5,2],1],
	[[1.5,3],1],
	[[1.5,4],1],
//start column 2
	[[2.5,0],1],
	[[2.5,1],1],
	[[2.5,2],1],
	[[2.5,3],1],
	[[2.5,4],1],
//start column 3
	[[3.5,0],1],
	[[3.5,1],1],
	[[3.5,2],1],
	[[3.5,3],1],
	[[3.5,4],1],
//start column 4
	[[4.5,0],1],
	[[4.5,1],1],
	[[4.5,2],1],
	[[4.5,3],1],
	[[4.5,4],2],//SPACEBAR
//start column 5
	[[5.5,0],1],
	[[5.5,1],1],
	[[5.5,2],1],
	[[5.5,3],1],
//start column 6
	[[7,0],1],
	[[7,1],1],
	[[7,2],1],
	[[7,3],1],
	[[7,4],2],//SPACEBAR
//start column 7
	[[8,0],1],
	[[8,1],1],
	[[8,2],1],
	[[8,3],1],
//start column 8
	[[9,0],1],
	[[9,1],1],
	[[9,2],1],
	[[9,3],1],
	[[9,4],1],
//start column 9
	[[10,0],1],
	[[10,1],1],
	[[10,2],1],
	[[10,3],1],
	[[10,4],1],
//start column 10
	[[11,0],1],
	[[11,1],1],
	[[11,2],1],
	[[11,3],1],
	[[11,4],1],
//start column 11
	[[12,0],1],
	[[12,1],1],
	[[12,2],1],
	[[12,3],1],
	[[12,4],1],
//start column 12
	[[13,0],1],
	[[13,1],1],
	[[13,2],2],//ENTER
	[[13,3],1],
	[[13,4],1],
//start column 13
	[[14,0],1],
	[[14,1],1],

	[[14,3],1],
	[[14,4],1],
];

//poker keyboard layout layer
pokerkeyboard = [
//start ROW 0
[[0,0],1],
[[1,0],1],
[[2,0],1],
[[3,0],1],
[[4,0],1],
[[5,0],1],
[[6,0],1],
[[7,0],1],
[[8,0],1],
[[9,0],1],
[[10,0],1],
[[11,0],1],
[[12,0],1],
[[13,0],2],
//start ROW 1
[[  0,1],1.5],
[[1.5,1],1],
[[2.5,1],1],
[[3.5,1],1],
[[4.5,1],1],
[[5.5,1],1],
[[6.5,1],1],
[[7.5,1],1],
[[8.5,1],1],
[[9.5,1],1],
[[10.5,1],1],
[[11.5,1],1],
[[12.5,1],1],
[[13.5,1],1.5],
//start ROW 2
[[   0,2],1.75],
[[1.75,2],1],
[[2.75,2],1],
[[3.75,2],1],
[[4.75,2],1],
[[5.75,2],1],
[[6.75,2],1],
[[7.75,2],1],
[[8.75,2],1],
[[9.75,2],1],
[[10.75,2],1],
[[11.75,2],1],
[[12.75,2],2.25],
//start ROW 3
[[   0,3],2.25],
[[2.25,3],1],
[[3.25,3],1],
[[4.25,3],1],
[[5.25,3],1],
[[6.25,3],1],
[[7.25,3],1],
[[8.25,3],1],
[[9.25,3],1],
[[10.25,3],1],
[[11.25,3],1],
[[12.25,3],2.75],
//start ROW 4
[[   0,4],1.25],
[[1.25,4],1.25],
[[2.5 ,4],1.25],
[[3.75,4],6.25],
[[10  ,4],1.25],
[[11.25,4],1.25],
[[12.5 ,4],1.25],
[[13.75,4],1.25],
];

holetype = 1;

module plate(w,h){
	round_radius = 4;
	minkowski_height = .001;

	minkowski(){
		cylinder(r=round_radius,h=minkowski_height,$fn=96);
		translate([round_radius,round_radius,0]) cube([w-round_radius*2,h-round_radius*2,plateThickness-minkowski_height*2]);
	}
}

module switchhole(holetype){
	if (holetype == 0){
		union(){
			cube([holesize,holesize,plateThickness]);

			translate([-cutoutwidth,1,0])
			cube([holesize+2*cutoutwidth,cutoutheight,plateThickness]);

			translate([-cutoutwidth,holesize-1-cutoutheight,0])
			cube([holesize+2*cutoutwidth,cutoutheight,plateThickness]);
		}
	}
	if (holetype == 1){
		union(){
			cube([holesize,holesize,plateThickness]);

			translate([-cutoutwidth,1,0])
			cube([holesize+2*cutoutwidth,holesize-2,plateThickness]);
		}
	}
	if (holetype == 2){
		cube([holesize,holesize,plateThickness]);
	}
}

module holematrix(holes,startx,starty){
	for (key = holes){
		translate([startx+lkey*key[0][0], starty-lkey*key[0][1], 0])
		translate([(lkey*key[1]-holesize)/2,(lkey - holesize)/2, 0])
		switchhole(holetype);
	}
}

module mountingholes(){
	translate([26.5,3.5*lkey,0]) //orig 1 1/3
	cylinder(h=plateThickness,r=mountingholeradius, $fn=24);

	translate([(13+2/3)*lkey,3.5*lkey,0])
	cylinder(h=plateThickness,r=mountingholeradius, $fn=24);

	translate([130,2.5*lkey,0]) //orig 6.75
	cylinder(h=plateThickness,r=mountingholeradius, $fn=24);

	translate([(15)*lkey - 3,2*lkey,0]) //orig 14.8
	cylinder(h=plateThickness,r=mountingholeradius, $fn=24);

	translate([3,2*lkey,0]) //orig .2
	cylinder(h=plateThickness,r=mountingholeradius, $fn=24);

	translate([(10)*lkey,.5*lkey,0])
	cylinder(h=plateThickness,r=mountingholeradius, $fn=24);
}

module stabilizer(){
	cube([3.3,14,plateThickness]);
}

module 2u_stabilizer(x,y,l){
	translate([0+lkey*x, h-lkey-lkey*y, 0])
	translate([(lkey*l-holesize)/2,(lkey - holesize)/2, 0])
	translate([-6.6,-.75,0])
	union(){
		stabilizer();
		translate([3.3 + 20.6,0,0]) stabilizer();
	}
}

module stabilizers(){
	2u_stabilizer(4.5,4,2);
	2u_stabilizer(7,4,2);
	2u_stabilizer(13,2,2);
}

module actual_plate(holes){
	difference(){
		plate(w,h);
		holematrix(holes,0,h-lkey);
		mountingholes();
		stabilizers();
		//translate([130,0,0]) cube([1000,150,150]);//left side
		//translate([0,0,0]) cube([230,150,150]); // right side
	}
}

//myplate();
//plate(w,h);
//actual_plate(pokerkeyboard);//stabilizers();
actual_plate(myKeyboard);

```


[User]
I need a parametric OpenSCAD design for a snow shovel wall hook, something sturdy enough to hold a metal-bladed shovel. I've got a basic idea, and I'd like it to be customizable.

The hook itself should be a wedge shape, with the wide part at the wall and a narrower opening for the shovel handle. The basic shape is like a triangle in profile, with the narrow end cut out in a semi-circle to cradle the handle. I want to parameterize the shovel handle diameter, the wedge's height and depth, and the thickness of the wall mounting tab. I also need to be able to customize the wall mounting tab's height.

I want the mounting tab to be a rectangle extending down from the wedge base. It should have two mounting holes, and I'd like the holes to be countersunk on the front and relieved on the back, so that they'll sit flush against the wall when attached with plastic expansion anchors. Make sure to parameterize the hole diameter, the inset from the top and bottom of the mounting tab, and the counterbore and relief diameters and depths. Finally, I want to be able to adjust the number of segments used to generate the circles.

For the modules, I'd like a separate one to generate the wedge and another one to create the entire hook assembly including the mounting tab. I'm not sure if I need a separate module just to do the boolean cuts, so feel free to combine those.

Could you use the BOSL2 library for this? It seems like it would be useful for some of the shapes and transformations. I don't have any existing code I'd like to include or adapt.

[Assistant]
shovel_hook.scad:
```
//Snow Shovel Wall Hook
//John Finch 12/2/14

handle_dia = 33;
mount_height = 100;
wall = 8;
drop = 10;
tab_thickness = 8;
hole_dia = 5;
hole_inset = 8;

wedge_height = 60;
wedge_width = handle_dia+2*wall;
wedge_depth = handle_dia+wall;
fn=100;

module wedge(){

polyhedron(
	points = [ [0,-wedge_width/2,wedge_height-drop],[0,wedge_width/2,wedge_height-drop],[wedge_depth,-wedge_width/2,wedge_height],[wedge_depth,wedge_width/2,wedge_height],[0,wedge_width/2,0],[0,-wedge_width/2,0] ],

triangles=[ [5,0,2],[5,1,0],[5,4,1],[0,1,2],[1,3,2],[4,3,1],[5,2,4],[2,3,4] ]
);

}

module hook(){
	difference(){
	wedge();
	translate([handle_dia/2,0,0])
	cylinder(r=handle_dia/2,h=wedge_height,$fn=fn);
	translate([handle_dia/2,-handle_dia/2,0])
	cube([handle_dia,handle_dia,wedge_height]);

	}
}

//hook();
module assembly(){
difference()
	{
	union()
		{
		translate([0,-wedge_width/2,0])
		cube([tab_thickness,wedge_width,mount_height]);
		translate([tab_thickness,0,(mount_height-wedge_height)/2])
		hook();
		}
	//cut screw holes
	translate([0,0,mount_height-hole_inset])
	rotate([0,90,0])
	cylinder(h=tab_thickness,r=hole_dia/2,$fn=fn);

	translate([0,0,hole_inset])
	rotate([0,90,0])
	cylinder(h=tab_thickness,r=hole_dia/2,$fn=fn);

	//cut backside relief pocket
	translate([0,0,mount_height-hole_inset])
	rotate([0,90,0])
	cylinder(h=2,r=6,$fn=fn);

	translate([0,0,hole_inset])
	rotate([0,90,0])
	cylinder(h=2,r=6,$fn=fn);

	//cut front side counter bore
	translate([tab_thickness-2.5,0,mount_height-hole_inset])
	rotate([0,90,0])
	cylinder(h=10,r=4,$fn=fn);

	translate([tab_thickness-2.5,0,hole_inset])
	rotate([0,90,0])
	cylinder(h=10,r=4,$fn=fn);

	}

}

translate([mount_height/2,0,0])
rotate([0,-90,0])
assembly();
```