[User]
I'd like to create a customizable star-shaped object in OpenSCAD. The star should be formed by repeating a single "ray" shape around a central axis. Here are the parameters I want to be able to control:

*   **Outer Radius:** The distance from the center of the star to the outermost point of a ray.
*   **Inner Radius:** The distance from the center of the star to the point where the ray begins to widen.
*   **Inner Height:** The vertical thickness of the star at the inner radius.
*   **Outer Height:** The vertical thickness of the star at the outer radius.
*   **Number of Rays:** The number of points (rays) on the star.

The ray itself should have a trapezoidal profile in the vertical plane. So the ray starts at the Inner radius with the Inner height, then expands out and up to the Outer radius and Outer height. Then, going inward from the inner radius of the ray should just be a straight line going down to the base, and the corners at the base of the ray going out from the inner radius should be straight lines connecting to the starting corners of the outer radius. The base of the star should all be at Z=0.

I'd like the star to be centered at the origin and generated using the polyhedron primitive rather than extrudes and rotations.

Can you generate an OpenSCAD file for this? I don't need any libraries.

[Assistant]
Star.scad:
```
Outer_Radius = 130;
Inner_Radius = 60;
Inner_Heighth=20;
Outer_Heighth=10;

Number_of_Rays=7;

union(){
    for(i= [1:Number_of_Rays])
    {
        rotate([0,0,i*(360/Number_of_Rays)]) zacken();
    }
}

module zacken()
{
    polyhedron(
        points = [  [ 0, 0, 0], [0,0,Inner_Heighth], [0, Outer_Radius, Outer_Heighth], [0, Outer_Radius, 0],
                    [Inner_Radius*sin(360/(2*Number_of_Rays)), Inner_Radius*cos(360/(2*Number_of_Rays)),Outer_Heighth],[-Inner_Radius*sin(360/(2*Number_of_Rays)), Inner_Radius*cos(360/(2*Number_of_Rays)),Outer_Heighth],
                    [Inner_Radius*sin(360/(2*Number_of_Rays)), Inner_Radius*cos(360/(2*Number_of_Rays)),0],[-Inner_Radius*sin(360/(2*Number_of_Rays)), Inner_Radius*cos(360/(2*Number_of_Rays)),0]],
        faces = [[1,2,4],[1,5,2],[0,6,3],[0,3,7],[6,4,3],[4,2,3],[7,3,5],[5,3,2],
                    [0,1,4],[0,5,1],[0,7,5],[0,4,6]]

    );
}
```


[User]
Hey, I need to design a parametric motor mount spacer for a small DC motor. I've got some basic requirements, and I'd like to be able to easily tweak these.

The spacer should have four mounting holes, arranged in a rectangular pattern. Two holes should be spaced `hole1Spacing` apart horizontally, and the other two `hole2Spacing` apart vertically. All of the mounting holes need to have a diameter of `holeDiameter`. I want to be able to specify a minimum amount of material, `minimumStrength`, around each mounting hole (so the actual diameter of the cylinder will be `holeDiameter + minimumStrength*2`. The main body of the spacer should be in a cross shape, with each 'arm' of the cross having a width of `mountWidth`. The overall height of the spacer should be `mountHeight`. Finally, there should be a hole for the motor shaft in the center of the spacer. The diameter of this hole should be `shaftDiameter`, and the depth of this hole should be `shaftDepth`.

I'd like to control all of these dimensions using parameters at the top of the file. Also, it would be helpful if you could add a small tolerance, `tolerance`, to the height of the holes (i.e. make them just a little bit longer than the overall height of the spacer). Finally, could you make it so the resolution is set to `$fn=100` at the end of the file? This is for 3D printing, so I want everything nice and smooth.

So to be clear, here are the parameters:

*   `hole1Spacing`: Horizontal spacing of the mounting holes.
*   `hole2Spacing`: Vertical spacing of the mounting holes.
*   `holeDiameter`: Diameter of the mounting holes.
*   `mountWidth`: Width of the arms of the cross.
*   `minimumStrength`: Minimum amount of material around mounting holes.
*   `shaftDiameter`: Diameter of the motor shaft hole.
*   `shaftDepth`: Depth of the motor shaft hole.
*   `mountHeight`: Overall height of the spacer.
*   `tolerance`: A small tolerance to ensure holes go all the way through.

I think that should be all the info. Let me know if you have any questions!

[Assistant]
parametric_motor_mount_spacer.scad:
```

//parametric motor mount spacer

hole1Spacing=16;
hole2Spacing=19;
holeDiameter=3;

//width of cross
mountWidth=8;

//strength around mounting holes in mm
minimumStrength=3;

//Shaft Hole
shaftDiameter=7;

//lenght of hole required for motor shaft at base of motor.
shaftDepth=5;

mountHeight=24;

difference()
{
union()
{
//cylinder right
translate([hole1Spacing/2,0,mountHeight/2])
cylinder(h=mountHeight,d=holeDiameter+minimumStrength*2,center=true);

//cylinder left
translate([-hole1Spacing/2,0,mountHeight/2])
cylinder(h=mountHeight,d=holeDiameter+minimumStrength*2,center=true);

//cylinder top
translate([0,hole2Spacing/2,mountHeight/2])
cylinder(h=mountHeight,d=holeDiameter+minimumStrength*2,center=true);

//cylinder bottom
translate([0,-hole2Spacing/2,mountHeight/2])
cylinder(h=mountHeight,d=holeDiameter+minimumStrength*2,center=true);

translate([0,0,mountHeight/2])
cube([hole1Spacing,mountWidth,mountHeight],center=true);

translate([0,0,mountHeight/2])
cube([mountWidth,hole2Spacing,mountHeight],center=true);
}

{
//hole1 right
translate([hole1Spacing/2,0,mountHeight/2])
cylinder(h=mountHeight+tolerance,d=holeDiameter,center=true);

//hole1 left
translate([-hole1Spacing/2,0,mountHeight/2])
cylinder(h=mountHeight+tolerance,d=holeDiameter,center=true);

//hole2 top
translate([0,hole2Spacing/2,mountHeight/2])
cylinder(h=mountHeight+tolerance,d=holeDiameter,center=true);

//hole2 bottom
translate([0,-hole2Spacing/2,mountHeight/2])
cylinder(h=mountHeight+tolerance,d=holeDiameter,center=true);

//shaft hole
translate([0,0,shaftDepth/2])
cylinder(h=shaftDepth+tolerance,d=shaftDiameter,center=true);

}
}

/* [Hidden] */
$fn=100;
tolerance=.01;
```


[User]
Hey there! I'm looking to get some custom thumbwheels designed for my 3D printer, specifically for the bed leveling screws which use M3 nuts. I've seen some designs online, but I want something parametric so I can adjust it for different nuts later if needed.

Basically, I need a thumbwheel with a cylindrical body, some rounded grips on the outside, and a hexagonal recess for an M3 nut, as well as a hole for the screw to pass through. Here's a breakdown of what I need:

**Overall Shape:**

*   Cylindrical body with a specified diameter and height.
*   Several smaller cylindrical "knurls" (rounded grips) spaced evenly around the outside edge of the main cylinder.
*   A hexagonal recess in the bottom of the cylinder to snugly fit an M3 nut.
*   A center hole that allows an M3 screw to pass through.

**Parameters (I'd like to be able to adjust these):**

*   `knob_height`: The height of the main cylinder.
*   `knob_diameter`: The diameter of the main cylinder.
*   `knurl_count`: The number of knurls (rounded grips) around the outside.
*   `knurl_diameter_fraction`: A fraction used to calculate the knurl diameter (e.g., 0.7). The actual diameter will be calculated as `knurl_diameter_fraction * knob_diameter * PI / knurl_count`.
*   `nut_width_flats`: The width between the flat sides of the hexagonal nut recess.
*   `nut_height`: The depth of the hexagonal nut recess.
*   `hole_diameter`: The diameter of the center hole for the screw.
*   `make_quad_array`: A boolean flag (or 0/1) which allows me to choose to generate one or four thumbwheels in a 2x2 grid. If 4 thumbwheels, they'd be spaced `knob_diameter + knurl_diameter + 1` apart.

**Specifics for M3 Nyloc Nuts:**

*   For M3 nyloc nuts, I'm aiming for these defaults:
    *   `knob_height = 5.2`
    *   `knob_diameter = 8.0`
    *   `knurl_count = 4`
    *   `knurl_diameter_fraction = 0.7`
    *    `nut_width_flats = 5.50`
    *   `nut_height = 3.20` (a bit less than the actual nut height for a snug fit)
    *   `hole_diameter = 4.0`

**Specifics for M3 standard Nuts:**
 *   For M3 standard nuts, I'm aiming for these defaults:
    *   `knob_height = 5.2`
    *   `knob_diameter = 8.0`
    *   `knurl_count = 4`
    *   `knurl_diameter_fraction = 0.7`
    *   `nut_width_flats = 5.50`
    *   `nut_height = 2.00` (a bit less than the actual nut height for a snug fit)
    *   `hole_diameter = 4.0`

**Important Design Considerations:**

*   The nut recess should be a tight fit, so you might need to make the dimensions slightly smaller than the actual nut to give it a press-fit.
*  The center hole should be slightly larger than the screw to allow it to spin freely.
*   I'd like the code to be clean and readable.
*   It would be great if you could use a `difference()` operation to create the final shape by subtracting the nut recess and hole from the base body and knurls, and also make the nut recess a bit deeper than the nut itself to get a nice fit.

I don't have a preference for any specific libraries, so you can use what you think is best for this design. I'm comfortable with standard OpenSCAD. I think everything should be able to be handled within the core language and functions.

Let me know if you have any questions! I'm looking forward to seeing the code.

[Assistant]
thumbwheel_M3_cust.scad:
```
// Thumbwheel for nuts, suitable for M3 nyloc and M3 standard nuts
// by Andy Gock
//
// With rounded thingies on the outside for gripping
//
// The nut recess should be a tight fit and will need a press
// vice or a hammer to fit the nut inside. A bit of superglue
// is also a good idea prior to fitting.

pi = 3.1427*1;

// To change between M3 standard nut or nyloc, we need to change the variables:
// knob_height, nut_height

// use 4.00 for standard nut, 5.20 for full nyloc
knob_height = 5.2;
knob_diameter = 8.0;
knurl_count = 4;
knurl_diameter = 0.7 * knob_diameter * pi / knurl_count;
nut_width_flats = 5.50;

// set to 1 to make an array of 4 thumbwheels, set to 0 for just one thumbwheel
make_quad_array = 1;

// This height determines the recess for the nut to press into
// Make this a little less than the actual nut height as we want
// a little bit of nut sticking out
// Note: 2.44mm is actual nut height for M3 half nut, 3.85mm is actual nut height for M3 nyloc
// use 2.00 for standard nut, use 3.20 for nyloc
nut_height = 2.00;
// use 4.0 for a M3 screw thread
hole_diameter = 4.0;

// Don't change, this is for the rendering of difference() to look nice
diff_fudge = 0.1*1;

$fn = 16*1;

// one nut
translate([0,0,0])
	thumbwheel();

if (make_quad_array == 1) {
	// make array of nuts (not including first one)

	translate([knob_diameter+knurl_diameter+1,0,0])
		thumbwheel();

	translate([0,knob_diameter+knurl_diameter+1,0])
		thumbwheel();

	translate([knob_diameter+knurl_diameter+1,knob_diameter+knurl_diameter+1,0])
		thumbwheel();

}

module thumbwheel(knob_height=knob_height, knob_diameter=knob_diameter, knurl_count=knurl_count, nut_width_flats=nut_width_flats, nut_height=nut_height, hole_diameter=hole_diameter) {

	difference() {

		union() {

			// make main cylinder
			cylinder(h=knob_height, r1=knob_diameter/2, r2=knob_diameter/2);

			// make other cylinders
			for (i = [0:(knurl_count-1)])
			{
				translate([knob_diameter/2 * sin(i*360/knurl_count), knob_diameter/2 * cos(i*360/knurl_count),0])
					cylinder(h=knob_height, r1=knurl_diameter/2, r2=knurl_diameter/2);
			}

		}

		// cut out for the nut hole
		translate([0,0,knob_height-nut_height])
			hexagon_prism( nut_height+diff_fudge, (nut_width_flats/2) / sin(60));

		// center hole for the screw to go through
		translate([0,0,-diff_fudge])
			cylinder(h = knob_height*2, r1=hole_diameter/2, r2=hole_diameter/2);

	}

}

module hexagon_prism(height,radius)
{
  linear_extrude(height=height) circle(r=radius,$fn=6);
}

```


[User]
Hey, I'm trying to design a fliplock for a pop-up camper, and I'm having a bit of trouble getting started in OpenSCAD. I've got a basic idea of what I want, but I need something parametric so I can adjust it to different sizes.

Essentially, it's a round mount with a bolt hole through it, and then a rectangular bar that swings down to lock a panel in place. I need to be able to tweak the following:

*   The radius of the round mounting part where the bolt goes through (let's call it `boltMountRadius`).
*   The roundness of that mount (using the `$fn` parameter, so an integer like `boltMountRoundness`).
*   The radius of the bolt hole (that's `boltRadius`).
*   The number of sides on the bolt hole (the `$fn` parameter, let's use `boltHoleSides`).
*   The height of the round mount (`boltMountHeight`).
*   The height of the rectangular flip bar (`flipMountHeight`).
*   The width of the flip bar (`flipMountWidth`).
*  The length of the flip bar (`flipMountLength`).
*   I also need a small offset for making the bolt hole, so that the hole definitely cuts all the way through (call that `holeCreationOffset`).

It would be cool if I could also add some text to the side of the lock too. I'll need:

*   The size of the text (`textSize`).
*   The actual text string (`locktext`).
*   And a boolean to enable or disable text (`enableText`).

I'm not sure how to do the text bit, but I'm picturing it being like a series of small cubes that form letters or something. I think I’ve seen examples like that in some fonts that use arrays or matrices to define the character shapes, so something like that.  Maybe the text can be located on the side of the bolt mount.

Can you help me create a parametric OpenSCAD file for this? I'd like it to all be contained within a single file, and I think it should be doable using just core OpenSCAD features. No extra libraries necessary for this, I think!

[Assistant]
fliplocks_v1.scad:
```
//How large the bolt holes are
boltRadius=1.5;//[1:5]
//How many bolt hole sides there are (roudness)
boltHoleSides=5;//[3:20]
//How large in radius (half the circle size)
boltMountRadius=9;//[5:25]
//How round the round portion of the lock is 4 = square
boltMountRoundness=10;//[4:50]
//How tall the round portion of the lock is where the bolt screws into
boltMountHeight=10;//[10:25]
//How tall the flip bar is on the lock
flipMountHeight=4;//[2:10]
//How wide the flip bar is on the lock
flipMountWidth=7;//[4:15]
//How long the flip bar is on the lock
flipMountLength=25;//[15:30]
//The offset for hole creations, sizes smaller then this will leave a thin layer that could cause issues with printing.
holeCreationOffset=0.02; //[0.01:0.03]
//The size of the text on the object
textSize=.5;//[.25,.5,.75,1]
//The text to display on the fliplock
locktext="Da Camper";
//Whether or not to enable the letters on the lock.
enableText=true; //[true:false]
module flipMount(){
    union() {

        difference(){
            cylinder(h = boltMountHeight, r =boltMountRadius, center = true, $fn = boltMountRoundness);
            cylinder(h = boltMountHeight + holeCreationOffset, r =boltRadius, center = true, $fn = boltHoleSides);
            }

        translate([-boltMountRadius - (flipMountLength * .4), 0, (boltMountHeight / 2) - (flipMountHeight / 2) ]) cube([flipMountLength, flipMountWidth, flipMountHeight], center=true);

    if (enableText){
        translate([-boltMountRadius - flipMountLength + 4, -textSize * 2, (boltMountHeight / 2) - (textSize / 2) ]) scale([textSize,textSize,textSize]) drawtext(locktext);
    }
    }
}

module drawtext(text) {
	//Characters
	chars = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}";

	//Chracter table defining 5x7 characters
	//Adapted from: http://www.geocities.com/dinceraydin/djlcdsim/chartable.js
	char_table = [ [ 0, 0, 0, 0, 0, 0, 0],
                  [ 4, 0, 4, 4, 4, 4, 4],
                  [ 0, 0, 0, 0,10,10,10],
                  [10,10,31,10,31,10,10],
                  [ 4,30, 5,14,20,15, 4],
                  [ 3,19, 8, 4, 2,25,24],
                  [13,18,21, 8,20,18,12],
                  [ 0, 0, 0, 0, 8, 4,12],
                  [ 2, 4, 8, 8, 8, 4, 2],
                  [ 8, 4, 2, 2, 2, 4, 8],
                  [ 0, 4,21,14,21, 4, 0],
                  [ 0, 4, 4,31, 4, 4, 0],
                  [ 8, 4,12, 0, 0, 0, 0],
                  [ 0, 0, 0,31, 0, 0, 0],
                  [12,12, 0, 0, 0, 0, 0],
                  [ 0,16, 8, 4, 2, 1, 0],
                  [14,17,25,21,19,17,14],
                  [14, 4, 4, 4, 4,12, 4],
                  [31, 8, 4, 2, 1,17,14],
                  [14,17, 1, 2, 4, 2,31],
                  [ 2, 2,31,18,10, 6, 2],
                  [14,17, 1, 1,30,16,31],
                  [14,17,17,30,16, 8, 6],
                  [ 8, 8, 8, 4, 2, 1,31],
                  [14,17,17,14,17,17,14],
                  [12, 2, 1,15,17,17,14],
                  [ 0,12,12, 0,12,12, 0],
                  [ 8, 4,12, 0,12,12, 0],
                  [ 2, 4, 8,16, 8, 4, 2],
                  [ 0, 0,31, 0,31, 0, 0],
                  [16, 8, 4, 2, 4, 8,16],
                  [ 4, 0, 4, 2, 1,17,14],
                  [14,21,21,13, 1,17,14],
                  [17,17,31,17,17,17,14],
                  [30,17,17,30,17,17,30],
                  [14,17,16,16,16,17,14],
                  [30,17,17,17,17,17,30],
                  [31,16,16,30,16,16,31],
                  [16,16,16,30,16,16,31],
                  [15,17,17,23,16,17,14],
                  [17,17,17,31,17,17,17],
                  [14, 4, 4, 4, 4, 4,14],
                  [12,18, 2, 2, 2, 2, 7],
                  [17,18,20,24,20,18,17],
                  [31,16,16,16,16,16,16],
                  [17,17,17,21,21,27,17],
                  [17,17,19,21,25,17,17],
                  [14,17,17,17,17,17,14],
                  [16,16,16,30,17,17,30],
                  [13,18,21,17,17,17,14],
                  [17,18,20,30,17,17,30],
                  [30, 1, 1,14,16,16,15],
                  [ 4, 4, 4, 4, 4, 4,31],
                  [14,17,17,17,17,17,17],
                  [ 4,10,17,17,17,17,17],
                  [10,21,21,21,17,17,17],
                  [17,17,10, 4,10,17,17],
                  [ 4, 4, 4,10,17,17,17],
                  [31,16, 8, 4, 2, 1,31],
                  [14, 8, 8, 8, 8, 8,14],
                  [ 0, 1, 2, 4, 8,16, 0],
                  [14, 2, 2, 2, 2, 2,14],
                  [ 0, 0, 0, 0,17,10, 4],
                  [31, 0, 0, 0, 0, 0, 0],
                  [ 0, 0, 0, 0, 2, 4, 8],
                  [15,17,15, 1,14, 0, 0],
                  [30,17,17,25,22,16,16],
                  [14,17,16,16,14, 0, 0],
                  [15,17,17,19,13, 1, 1],
                  [14,16,31,17,14, 0, 0],
                  [ 8, 8, 8,28, 8, 9, 6],
                  [14, 1,15,17,15, 0, 0],
                  [17,17,17,25,22,16,16],
                  [14, 4, 4, 4,12, 0, 4],
                  [12,18, 2, 2, 2, 6, 2],
                  [18,20,24,20,18,16,16],
                  [14, 4, 4, 4, 4, 4,12],
                  [17,17,21,21,26, 0, 0],
                  [17,17,17,25,22, 0, 0],
                  [14,17,17,17,14, 0, 0],
                  [16,16,30,17,30, 0, 0],
                  [ 1, 1,15,19,13, 0, 0],
                  [16,16,16,25,22, 0, 0],
                  [30, 1,14,16,15, 0, 0],
                  [ 6, 9, 8, 8,28, 8, 8],
                  [13,19,17,17,17, 0, 0],
                  [ 4,10,17,17,17, 0, 0],
                  [10,21,21,17,17, 0, 0],
                  [17,10, 4,10,17, 0, 0],
                  [14, 1,15,17,17, 0, 0],
                  [31, 8, 4, 2,31, 0, 0],
                  [ 2, 4, 4, 8, 4, 4, 2],
                  [ 4, 4, 4, 4, 4, 4, 4],
                  [ 8, 4, 4, 2, 4, 4, 8] ];

	//Binary decode table
	dec_table = [ "00000", "00001", "00010", "00011", "00100", "00101",
  	            "00110", "00111", "01000", "01001", "01010", "01011",
  	            "01100", "01101", "01110", "01111", "10000", "10001",
  	            "10010", "10011", "10100", "10101", "10110", "10111",
	            "11000", "11001", "11010", "11011", "11100", "11101",
	            "11110", "11111" ];

	//Process string one character at a time
	for(itext = [0:len(text)-1]) {
		//Convert character to index
		assign(ichar = search(text[itext],chars,1)[0]) {
			//Decode character - rows
			for(irow = [0:6]) {
				assign(val = dec_table[char_table[ichar][irow]]) {
					//Decode character - cols
					for(icol = [0:4]) {
						assign(bit = search(val[icol],"01",1)[0]) {
							if(bit) {
								//Output cube
								translate([icol + (6*itext), irow, 0])
									cube([1.0001,1.0001,1]);
							}
						}
					}
				}
			}
		}
	}
}

flipMount();
```


[User]
I'm looking to create a customizable finger grip for hex nuts, similar to the one described in the Thingiverse link you provided, but I'd like to generate the OpenSCAD code from scratch.

Here’s a breakdown of what I need:

*   **Core Functionality:** The design should create a ring that grips a hex nut securely, using a parametric approach so I can adjust it for different nut sizes and materials. I need to be able to specify the size of the nut (measured across the flats) as a parameter.

*   **Tolerance:** The user should be able to control the tolerance between the nut and the grip, so I can adjust for different materials (PLA, ABS, etc.) and printer settings. I'd like to have a few presets for typical tolerances.

*   **Outer Grip Features:** The outside of the grip should have tags or protrusions for better finger grip. The user needs to be able to specify the outer diameter of the ring and the number of tags around its circumference.

*   **Shape:** I'm looking for a main body consisting of a cylinder with those tags for grip, with the center cut out to hold the nut. The cylinder should have slightly tapered ends, so that the center part of the cylinder has the largest diameter, and the ends have a smaller diameter. This is just for aesthetics.

*   **Parameters:** The following parameters need to be exposed in the customizer:
    *   `nut_size`: The size of the hex nut (measured across the flats).
    *   `tolerance`: The tolerance to add for a good fit. I'd like presets like "None", "Normal", "Extra", "Loose", and "Extreme" as you see in the given code.
    *   `height`: The height of the grip.
    *   `outer_diameter`: The outer diameter of the grip.
    *   `number_of_tags`: The number of grip tags on the outside.

*   **Libraries:** I don't need any specialized libraries for this, I believe it can be made with OpenSCAD's built-in functions.

Essentially, I want a flexible OpenSCAD script that lets me quickly generate grips for a variety of different hex nuts with good finger grip and custom tolerances. I'm imagining a primary `finger_grip_hex_nut.scad` file. Please be sure to provide the full code. Thanks!

[Assistant]
Finger_grip_hex_nut.scad:
```
// The size of your nut (measured over the flats)
nut_size = 8;
// Tolerace added for the nut to fit properly
tolerance = 0.1; //[0:None, 0.1:Normal, 0.2:Extra, 0.3:Loose, 0.4:Extreme]
// Height of the object
height = 6; //[1:1:50]
// The outermost diameter
outer_diameter = 15; //[5:1:100]
// The number of tags on the outside
number_of_tags = 12; //[6:1:100]

difference() {
	body();
	nut();
}

module body(){
	intersection(){
		difference(){
			union(){
				cylinder(height, d=outer_diameter-outer_diameter*PI/number_of_tags/4, $fn=number_of_tags*4);
				tags();
			}
			gaps();
		}
		union(){
			cylinder(height/6, d1=outer_diameter-outer_diameter*PI/number_of_tags/4, d2=outer_diameter+outer_diameter*PI/number_of_tags/4, $fn=number_of_tags*4);
			translate([0, 0, height/6])
			cylinder(height*2/3, d=outer_diameter+outer_diameter*PI/number_of_tags/4, $fn=number_of_tags*4);
			translate([0, 0, height*5/6])
			cylinder(height/6, d1=outer_diameter+outer_diameter*PI/number_of_tags/4, d2=outer_diameter-outer_diameter*PI/number_of_tags/4, $fn=number_of_tags*4);
		}
	}
}

module nut(){
	translate([0,0,-1])
	cylinder_outer(height+2, nut_size/2+tolerance/2, 6);
}

module gaps(){
	for(i=[360/(number_of_tags*2):360/number_of_tags:360]){
		translate([cos(i)*(outer_diameter-outer_diameter*PI/number_of_tags/4)/2, sin(i)*(outer_diameter-outer_diameter*PI/number_of_tags/4)/2, -1])
		cylinder(height+2, d=(outer_diameter-outer_diameter*PI/number_of_tags/4)*PI/number_of_tags/2, $fn=number_of_tags*4);
		}
}

module tags(){
	for(i=[0:360/number_of_tags:360]){
		translate([cos(i)*(outer_diameter-outer_diameter*PI/number_of_tags/4)/2, sin(i)*(outer_diameter-outer_diameter*PI/number_of_tags/4)/2, 0])
		cylinder(height, d=(outer_diameter-outer_diameter*PI/number_of_tags/4)*PI/number_of_tags/2, $fn=number_of_tags*4);
		}
}

module cylinder_outer(height,radius,fn){
   fudge = 1/cos(180/fn);
   cylinder(h=height,r=radius*fudge,$fn=fn);
}
```


[User]
I'm looking for a parametric design for a self-watering planter, and it should be designed so it can be printed in two separate parts that fit together.

The main body of the planter will be a pot with a reservoir at the bottom. The pot portion will be roughly conical, with a smaller diameter at the base than at the top. I'd like to control the base diameter, the top diameter, and the height of the pot independently. The reservoir will be a cylinder that attaches to the bottom of the pot, and I need to be able to set its height independently as well. I want to be able to set the thickness of the walls, floors, and a central tube that goes down into the reservoir.

Specifically, I need these parameters:

*   `base`: Diameter of the pot at its base.
*   `top`: Diameter of the pot at its top.
*   `ht`: Height of the pot (where the grow medium will go).
*   `res`: Height of the water reservoir below the pot.
*   `wall`: Thickness of the walls of the pot and reservoir.
*   `floors`: Thickness of the base and internal partition.
*   `tube`: Diameter of the central tube.
*   `tol`: A tolerance value for fitting the partition in the tube.
*   `spout`: Diameter of the spout to refill the reservoir.
*   `gdia`: Diameter of the grating holes.
*   `gpitch`: Pitch between grating holes.

The design should also include a side-fill spout for the reservoir. The internal tube that goes down into the reservoir should have holes in its sides (a grating) to allow water to reach the growing medium. The floor of the pot should also have a grating to facilitate drainage and wicking. The grating should be made of a series of small holes, and I need to control the diameter and spacing of these.

The two parts of the design are:

1.  The main body, including the pot, reservoir, and central tube.
2.  A partition that sits inside the central tube and on the bottom of the pot.

The main body should be mostly hollow except for the base/floor and the side spout, and the partition part should have holes in its bottom as well. The partition should sit securely inside the central tube, with some tolerance to account for printing variations, but that tolerance should also be parametrically adjustable.

I'd like the design to be fully parametric, so I can easily change the dimensions and proportions as needed.

I'm hoping you can provide a complete set of OpenSCAD code to generate the two parts. The core should be the parts with a separate file for the top, with a module to build the whole pot system as well. Please make sure the code is well-commented. I don't need to import anything from external libraries, so just use base OpenSCAD features.

[Assistant]
pot_v4.scad:
```
// Pot ot partition?
make = "pot"; // [pot, partition]

// Diameter at the bottom
base = 50;
// Diameter at the top
top = 80;

// Height of the medium
ht = 25;
// Height if the reservoir
res  = 25;

// Thickness of the wall
wall = 2;
// Thickness of the floor and partition
floors = 2;
// Diameter of the internal tube
tube = 20;
// Fit tolerance to accomodate the partition inside the tube
tol = 1;
// Diameter of the spout
spout = 30;
// Grating hole diameter
gdia = 3;
// Grating hole pitch
gpitch = 6;

$fn = 60;

function radius_at(z) =  (top*z/(ht+res) + base*(1-z/(ht+res)))/2;
module pot_solid(offset) {
    translate([0,0,res]) cylinder(r1=radius_at(res)-offset, r2=top/2-offset, h=ht);
}
module pot() {
    difference() {
        pot_solid(0);
        pot_solid(wall);
    }
}
module reservoir_solid(offset) {
    union () {
        cylinder(r1=base/2 - offset, r2=radius_at(res) - offset, h=res);
        translate([-radius_at(res/2)+wall/2,0,res/2+offset])
            cylinder(r1=0, r2=spout/2 - offset, h=res/2);
    }
}

module reservoir() {
    difference() {
        reservoir_solid(0);
        reservoir_solid(wall);
    }
}

module side_grating() {
    n = floor(PI*tube/2/gpitch);
    angle = 180/n;
    nh = floor(res/gpitch);
    for (j = [1:nh]) {
        translate([0,0,(j-1)*gpitch])
        for (i = [1:n]) {
            rotate([0,0,(i-1)*angle + (j%2)*angle/2]) rotate([90,0,0]) translate([0,0,-tube]) cylinder(r=gdia/2, h=2*tube, $fn=6);
        }
    }
}

module floor_grating() {
    d = radius_at(res+floors);
    for (x = [-d:gpitch:d]) {
        for (y = [-d:gpitch:d]) {
            translate([x,y,0]) cylinder(r=gdia/2, h=floors,$fn=6);
        }
    }
}
module partition() {
    difference() {
        cylinder(r1=radius_at(res), r2 = radius_at(res+floors), h=floors);
        //cylinder(r=tube/2,h=floors);
        floor_grating();
    }
}
module wick() {
    difference () {
        cylinder(r=tube/2, h=res);
        cylinder(r=tube/2-wall, h=res);
        side_grating();
    }
}

module full_pot() {
    union() {
        cylinder(r=base/2,h=floors);
        translate([0,0,floors]) union () {
            reservoir();
            wick();
            pot();
        }
    }
}

module full_partition() {
    difference () {
        union () {
            translate([0,0,floors]) rotate([180,0,0]) partition();
            cylinder(r=tube/2-wall-tol, h=res/3);
        }
        translate([0,0,-res/3]) cylinder(r=tube/2-wall-tol-wall, h=res);
    }
}

if (make == "pot") {
    difference () {
        full_pot();
        //translate([-top,0,0]) cube([top,top,top]);
    }
} else {
    full_partition();
}

```


[User]
I have a design I'd like to create in OpenSCAD. I've attached a .scad file, `criam.scad`, which represents a 3D model of Crimea, extruded to a height of 5mm. The code uses a polygon defined by a series of points that were imported from an Inkscape path, and then it's scaled and extruded to create the 3D shape.

I'd like to be able to control the height of the extrusion parametrically. Additionally, the current model is scaled by a fixed factor (25.4/90) in X and -Y, which converts from pixels to mm - and flips the image on the Y axis. I'd like to make this scaling parametric as well so I can adjust its size and potentially flip it on either axis independently. I also want the code to still be associated with a path in Inkscape, or any arbitrary polygon, not just the one I've provided. Essentially I'd like to create a module that takes a polygon as a list of points and creates the extruded solid, allowing parametric adjustments for extrusion height and scaling factors independently for X and Y and the option to flip the y-axis.

So, to summarize: I'm looking for a parametric OpenSCAD module that will take a list of points representing a 2D polygon, an extrusion height, and x and y scaling factors as input, and produces an extruded 3D shape. The y-scaling factor should be able to be negative for a vertical mirror. This is all I need for now, but I might add more functionality later.

[Assistant]
criam.scad:
```

// Module names are of the form poly_<inkscape-path-id>().  As a result,
// you can associate a polygon in this OpenSCAD program with the corresponding
// SVG element in the Inkscape document by looking for the XML element with
// the attribute id="inkscape-path-id".

// fudge value is used to ensure that subtracted solids are a tad taller
// in the z dimension than the polygon being subtracted from.  This helps
// keep the resulting .stl file manifold.
fudge = 0.1;

module poly_path3099(h)
{
  scale([25.4/90, -25.4/90, 1]) union()
  {
    linear_extrude(height=h)
      polygon([[32.137172,-4.006373],[25.304552,-6.230950],[23.397772,-6.548746],[22.074236,-7.294880],[21.093742,-8.455526],[20.652780,-9.568219],[20.537602,-10.759551],[21.649892,-11.951288],[23.477222,-14.732009],[21.967682,-17.751076],[19.822562,-21.723534],[17.677432,-24.424805],[13.228282,-29.747898],[8.064088,-29.032856],[7.110698,-31.416330],[7.507944,-35.547686],[7.507944,-38.169508],[1.469809,-42.221415],[-9.017479,-46.908915],[-17.995233,-48.895143],[-24.827860,-49.927982],[-34.282309,-54.456584],[-38.413665,-56.204465],[-40.011876,-56.533875],[-41.591631,-56.125015],[-42.473603,-55.458155],[-43.109631,-54.553698],[-43.433557,-53.496510],[-43.418961,-52.390905],[-43.577860,-48.577346],[-41.909428,-45.081583],[-41.591631,-42.300863],[-41.591631,-39.440693],[-42.068326,-37.136668],[-44.451800,-35.547685],[-46.358995,-34.989119],[-48.344809,-34.912092],[-50.887182,-33.482007],[-53.509004,-33.323109],[-54.144597,-30.462939],[-55.097987,-29.747897],[-59.706036,-30.701286],[-63.599045,-27.523320],[-65.346926,-25.378193],[-68.842689,-23.550862],[-75.278070,-20.293447],[-79.806672,-16.320989],[-83.302435,-13.143023],[-85.527011,-11.156794],[-87.195443,-8.773320],[-89.181672,-4.403616],[-88.228282,-1.861243],[-87.105615,0.003833],[-85.447562,1.396172],[-84.306894,1.783421],[-83.101783,1.872875],[-80.760062,1.316722],[-78.318089,0.019093],[-75.754765,-0.987304],[-73.793978,-0.952139],[-71.941206,-0.272261],[-69.834734,1.172596],[-67.809850,2.746806],[-61.056672,7.593205],[-56.766418,9.102739],[-50.092689,8.705493],[-48.106460,8.149349],[-46.673112,8.450251],[-45.335882,9.049585],[-44.152479,9.913844],[-43.180613,11.009518],[-42.470174,12.302285],[-42.053035,13.718062],[-41.941475,15.189791],[-42.147774,16.650410],[-40.240994,20.622870],[-39.785467,22.336139],[-39.829533,23.224678],[-40.161544,24.039180],[-41.627052,25.165151],[-43.180612,26.184310],[-43.903588,27.649174],[-44.134001,29.282820],[-44.690145,32.699140],[-45.007942,36.115450],[-45.484637,39.531770],[-48.106459,40.485160],[-49.847015,40.865556],[-51.363874,41.756340],[-51.908732,43.017435],[-51.611744,44.358705],[-50.585449,45.271905],[-49.218747,45.410995],[-47.353169,47.043844],[-45.246290,48.350615],[-43.077250,49.363980],[-41.035484,50.575195],[-39.261322,52.344575],[-37.380823,53.991505],[-35.230661,54.788124],[-32.931671,55.183245],[-29.288628,55.959555],[-25.622349,56.533875],[-22.762224,56.418360],[-19.981459,55.739385],[-14.578916,52.640875],[-12.115993,49.621805],[-8.858577,45.728795],[-7.031247,42.550830],[-2.250526,36.751040],[-2.423196,33.970320],[1.867058,32.222440],[8.381889,29.123930],[12.751592,27.773290],[15.135072,28.011640],[18.154142,26.343210],[20.219812,26.502100],[22.285492,27.852740],[23.704082,28.229635],[25.145662,28.011640],[26.385082,26.918428],[27.052442,25.389820],[27.382168,23.456206],[27.290792,21.496810],[30.707092,19.113330],[30.707092,17.683250],[31.739932,16.968210],[33.170022,17.286000],[33.646722,16.809310],[35.871302,18.080490],[36.347992,15.220320],[38.175322,14.743630],[37.857532,11.883459],[37.380832,11.327315],[39.049252,9.579434],[41.671082,8.069900],[45.881882,8.308247],[50.172142,9.023289],[52.555612,12.121806],[53.588452,13.710790],[55.336332,14.664180],[57.222882,14.775285],[58.990992,14.108040],[63.678492,13.631340],[63.576852,12.089693],[64.234642,10.691722],[65.201215,9.919957],[66.391392,9.583251],[67.617340,9.747377],[68.683792,10.373925],[69.542562,11.898630],[71.067262,12.757400],[72.447828,12.818616],[73.796662,12.449553],[76.231462,11.088967],[80.124472,8.943840],[82.825742,7.037061],[80.203922,2.826256],[79.965572,-1.702346],[80.124472,-2.973533],[80.577503,-4.200742],[81.316202,-5.277558],[82.792587,-6.384316],[84.573622,-6.866541],[82.666842,-7.661033],[83.461332,-9.329465],[86.400952,-8.455524],[88.943322,-9.806160],[89.181672,-11.633490],[88.683345,-13.504925],[87.513242,-15.049804],[85.429377,-16.244572],[83.064082,-16.877134],[79.250532,-17.592177],[76.481335,-18.072223],[73.689082,-18.307219],[69.875532,-17.830524],[62.645652,-17.909974],[61.738908,-17.677423],[61.019192,-17.078869],[60.637823,-16.223990],[60.659422,-15.288152],[61.610472,-13.665924],[62.111562,-12.864529],[62.327862,-11.951288],[61.826172,-10.807642],[60.659422,-10.362305],[59.308792,-11.156796],[57.481462,-12.825229],[56.925396,-13.900161],[56.677662,-15.084778],[56.760425,-16.292188],[57.163662,-17.433279],[56.354072,-18.725458],[54.990782,-19.408538],[53.471072,-19.283458],[52.237812,-18.386669],[51.725882,-17.446881],[51.462262,-16.397799],[51.204972,-14.255313],[50.496490,-12.057801],[49.139302,-10.203407],[47.633072,-9.091050],[45.961332,-8.217178],[41.194382,-5.992601],[37.460272,-4.483068],[34.679552,-4.483068],[32.137172,-4.006373]]);
  }
}

poly_path3099(5);
```


[User]
I need a parametric encoder wheel design. It should have the following features:

*   **Main Wheel:**
    *   It needs to have an outer radius, wall thickness, and inner radius that are all configurable.
    *   The number of teeth around the circumference should also be parametric.
    *   The wheel should have a configurable height.
*   **Center Hole:**
    *   There needs to be a center hole, with a configurable radius.
    *   I'd like to be able to choose if that hole is circular or hexagonal.
*   **Center Support:**
    *   I need a cylindrical support in the center of the wheel, also with a configurable radius and height.
    *   This support needs a center hole, again with a configurable radius.
    *   Like the main hole, I need to be able to specify if the support's hole is circular or hexagonal.

I'm looking for an OpenSCAD file that generates this, and I'd prefer to keep it as simple as possible, without needing to rely on any external libraries. I'm also not concerned with rendering it, and don't want to manually move the components within the file using `translate` or `rotate` functions. Thanks!

[Assistant]
EncoderWheel.scad:
```
/*
 * Parametric Encoder Wheel
 *
 * by Rafael Estevam, November 2015
 * http://www.RafaelEstevam.Net
 *
 * Licenced under Creative Commons Public Domain
*/

ExternalRadius = 10;
WallTickness = 1;
InnerRadius = 5;
TeethCount = 5;
WheelHeight = 2;
CenterHoleRadius = 1.75;
CenterHoleExagonal = "No"; // [No,Yes]
CenterSupportRadius = 4;
CenterSupportHeight = 2;
CenterSupportHoleRadius = 3;
CenterSupportHoleExagonal = "Yes"; // [No,Yes]

/* [HIDDEN] */
$fn=50;

difference(){
    union(){
        Wheel(ExternalRadius,WallTickness,
              InnerRadius,TeethCount,WheelHeight);
        cylinder(h=CenterSupportHeight,
                 r=CenterSupportRadius);
    }
    translate([0,0,WheelHeight/2])
        cylinder(h=(WheelHeight+CenterSupportHeight)*2,
                 r=CenterSupportHoleRadius,
                 $fn=CenterSupportHoleExagonal == "No" ? 50:6);
    translate([0,0,-WheelHeight+0.01])
        cylinder(h=WheelHeight*2,
                 r=CenterHoleRadius,
                 $fn=CenterHoleExagonal == "No" ? 50:6);
}

module Wheel(ExtRadius,Wall,InnerRadius,TeehCount,Height){
    cylinder(r=InnerRadius,h=Height,center=true);
    difference(){
        cylinder(r=ExtRadius,h=Height,center=true);
        for(a = [0:2:TeehCount*2]){
            stepAngle = 360.0 / (TeehCount*2);
            3DArc(Height+1,a*stepAngle,
                  (a+1)*stepAngle,
                  ExtRadius-Wall);

        }
    }
}
module 3DArc(Height,StartAngle,EndAngle,Radius){
    linear_extrude(height=Height,center=true)
    2DArc(StartAngle,EndAngle,Radius);
}
module 2DArc(StartAngle,EndAngle,Radius){
    points = [
        for (a = [StartAngle : EndAngle])
            Radius * [ sin(a), cos(a) ] ];
    polygon(concat(points, [[0, 0]]));
}
```


[User]
I need to design a parametric toilet shim for 3D printing, and I'd like to use OpenSCAD. It should be a series of rectangles stacked on top of each other, each smaller than the one below it. The top layer should be the smallest rectangle, and the bottom layer should be the largest.

I need to be able to adjust the following:

*   **Overall Shim Length:** The total length of the shim.
*   **Overall Shim Width:** The total width of the shim.
*   **Step Depth:** The amount of length removed from the next rectangle layer.
*   **Step Height:** The height of each rectangular layer.
*   **Step Width:** The width of each rectangular layer (this should default to the Overall Shim Width, but I'd like the option to adjust it).

I also want to be able to print multiple shims at once, with controls for:

*   **Shims per Row:** The number of shims to print along the X axis.
*   **Rows per Print:** The number of rows of shims to print along the Y axis.

Each shim should be separated by a small gap (which I'd like to be able to adjust) to prevent them from fusing together.

I don't have any code to provide you with, but I'm looking for a solution that uses minimal libraries. If possible, please try to create a single .scad file.

[Assistant]
toilet_shim.scad:
```
//
//  Toilet_shim
//
//  EvilTeach 11/2015
//
//  This model generates a shim suitable for adjusting your toilet.
//  It is basically a series of smaller and smaller rectangles.
//  As it is parameterized, you can generate it however you want.
//
//  It also lets you print multiple copies.   By default it prints two.
//
//  This is post-card-ware.  Let me know in a comment how this worked out
//  for you.  Defect reports, and suggestions for improvements are always welcome.
//
//  I recommend you use ABS with at least a 50% fill.
//  Anything lower that 4 as a stepDepth doesn't work as well.
//  Your toilet bottom edge will vary, so it may take a print or two
//  to zero in on your desired depth.
//

shimsPerRow  =  1;        // How many shims to fit on print on the X axis
rowsPerPrint =  2;        // How many rows of shims to print on the Y axis

shimLength   = 40;        // Total Length of the shim
shimWidth    = 30;        // Total Width of the shim

stepDepth    =  4;        // The depth of one step of the shim
stepHeight   =  1;        // The height of one step of the shim
stepWidth    = shimWidth; // The width of one step of the shim

//
//  This function draws exactly one layers of the shim
//
module draw_one_layer(length)
{
    translate([0, 0, (shimLength - length) / stepDepth * stepHeight])
        cube([length, stepWidth, stepHeight]);
}

//
//  This function draws exactly one shim
//  at the given offset
//
module draw_one_shim(xOffset, yOffset)
{
    gapBetweenShims = 2;

    translate([yOffset * (shimLength + gapBetweenShims),
               xOffset * (shimWidth  + gapBetweenShims),
               0])
        for (length=[shimLength : -stepDepth : stepDepth])
        {
            draw_one_layer(length);
        }
}

//
//  This function iterate over the desired number of shims per row
//  and shims per column, drawing each shim as it goes.
//  The loops are designed to try to keep things centered on the build plate
//
module main()
{
    for (yOffset = [-rowsPerPrint / 2 : 1 : rowsPerPrint / 2 - 1])
    {
        for (xOffset =[-shimsPerRow / 2 : 1 : shimsPerRow / 2 - 1])
        {
            draw_one_shim(xOffset, yOffset);
        }
    }
}

// Welcome to the entry point.
// Can you tell I am a C programmer?
main();

```


[User]
I'm looking to create a parametric corner bracket for connecting flat panels, like foam core or acrylic, to make various polygonal structures. I already have a design that works for me (I've attached it for reference), but I'd like to move away from my ad-hoc approach and instead go with more modular/reusable code. I want to be able to specify the panel thickness and the angle of the corner, and have the bracket adjust accordingly.

Here's a breakdown of what I need:

*   **Corner Angle:** I need to be able to create corners at various angles, not just 90 degrees, including 30, 36, 40, 45, 60, 72, 90 and 120 degrees. These correspond to 3, 4, 5, 6, 8, 9, 10, and 12 sided shapes respectively.
*   **Panel Thickness:** The design should accommodate panels of varying thicknesses. I should be able to specify a "gap" that the panels fit into.
*   **Connection Type:** I need two connection options: two panels connecting at a corner or three panels connecting at a corner, with the three panel version being only for 90 degree corners.
*   **Bracket Dimensions:** I need to be able to control the length, width, and height of the bracket. It would be useful to be able to separately control the thickness of the bracket faces and the support walls, too.
*   **Parametric Design:** Everything should be customizable through parameters, including the dimensions mentioned above, the gap for the panels, and the corner angle. I would prefer a modular approach using a base module for the corner bracket, then modules to arrange multiple copies.
*   **Assembly View:** It would be great if there is an option to show the brackets with panels attached, like in my attached code. I'd like to be able to control the panel dimensions too in this assembled view.
*   **OpenSCAD Libraries:** I would like this design to use the `BOSL2` library, to simplify the math for the angled corners. I think that should make it much easier to manage. I am going to want to eventually make a library of similar, related parts and that is the direction I'd like to go.

Could you generate the necessary OpenSCAD files for me?

[Assistant]
FoamCoreWallCornerBracket_rev7.scad:
```
//Parametric Corner bracket to hold 2 3/16" thick foam core sheets together
//
//By changing the Gap variable,
//You should be able to use with other material:
//like Acrylic, Glass, Plywood, etc.
//
//As well as 90 corners,
//this can do 7 other angles for 3, 5, 6, 8, 9, 10 & 12 sided structures
//11/21/2015    By: David Bunch

//CUSTOMIZER VARIABLES

//1. Length of Corner Backet
CornerLen = 20;

//2. Width of Corner Bracket
CornerWid = 20;         //For Corner_Ang other than 90, CornerLen is used for both sides

//3. Height of Corner Bracket
CornerHt = 9;

//4. Thickness of Face of Connector
BaseThk = 2.0;

//5. Thickness of Side Walls
Thk = 3;

//6. Gap that Foam core board fits in between
Gap = 4.5;

//7. Angle At Corner (Only 90 when Connect_Qty = 3)
Corner_Ang = 90;        //90 = 4 Sided Structure
                        //120 = 3 Sided
                        //72 = 5 Sided
                        //60 = 6 Sided
                        //Not bothering with 7 sided
                        //45 = 8 Sided
                        //40 = 9 Sided
                        //36 = 10 Sided
                        //Not bothering with 11 Sided
                        //30 = 12 Sided
//8. Length of Foam Core (For Assembly Display)
FC_Len = 100;

//9. Width of Foam Core (For Assembly Display)
FC_Wid = 60;

//10. Height of Foam Core (For Assembly Display)
FC_Ht = 40;

//11. Foam Core Thickness (For Assembly Display)
FC_Thk = Gap;

//12. How many corners to Draw (1,2,4 or 8)
Qty = 2;            //Only used if Assembly = 0

//13. Number of Connections (2 or 3)
Connect_Qty = 2;        //Can only use 3 when Corner Angle is 90

//14. Draw Assembled (1 = Yes, 0 = No)
Assembly = 0;           //1 = Show Assembled, 0 = No

//CUSTOMIZER VARIABLES END

TopMul = (Connect_Qty - 2);         //0 if connecting 2 sides at corner
                                    //1 if connecting 3 sides at corner
echo("TopMul = ",TopMul);
TopThk = (BaseThk * TopMul);
echo("TopThk = ",TopThk);
TopGap = (Gap * TopMul);
echo("TopGap = ",TopGap);
TopTotThk = TopThk + TopGap + (Thk * TopMul);
echo("TopTotThk = ",TopTotThk);

TotHt = BaseThk + TopGap + TopThk + CornerHt;   //Total Height of Corner Bracket
echo("TotHt = ", TotHt);
TotThk = Thk + Gap + Thk;
CutCubeHt = TotHt - TopTotThk + 1;

//Calculate Corner support when printing a Connect 3
Ang45_Wid = sqrt((Thk * Thk) + (Thk * Thk));
Ang45_Len = Ang45_Wid * 2;
Y_Offset = cos(45) * TotHt;

//Calculations for Corner_Ang other than 90
Y_Center = tan(60) * CornerLen;

echo("Y_Center = ",Y_Center);
Corner_Rad = CornerLen / cos(60);
echo("Corner_Rad = ",Corner_Rad);
Corner_Dia = Corner_Rad * 2;
echo("Thk = ", Thk);
Corner_Dia_x2 = Corner_Dia * 2;
Thk_DiagLen = Thk / sin(60);
echo("Thk_DiagLen = ",Thk_DiagLen);
Gap_DiagLen = Gap / sin(60);
echo("Gap_DiagLen = ",Gap_DiagLen);
Sides = 360 / Corner_Ang;
echo("Sides = ", Sides);
In_Rad = Corner_Rad - (Thk_DiagLen * 2) - Gap_DiagLen;
In_Dia = In_Rad * 2;
echo("In_Rad = ",In_Rad);

module Corner()
{
    if (Corner_Ang == 90)
    {
    difference()
    {
        cube([CornerLen,CornerWid,TotHt]);      //Draw the Basic corner to start

        translate([Thk,Thk,BaseThk])
        cube([CornerLen,Gap,TotHt]);            //Cut out where the length side connects

        translate([Thk,Thk,BaseThk])
        cube([Gap,CornerWid,TotHt]);            //Cut out where the Width side connects
        if (Connect_Qty == 2)
        {
            translate([TotThk,TotThk,-1])
            cube([CornerLen,CornerWid,CutCubeHt+1]);  //Cut off the inside corner
        } else {
            translate([TotThk,TotThk,BaseThk+Gap+Thk])
            cube([CornerLen,CornerWid,CutCubeHt]);    //Cut off the inside corner
            translate([TotThk,TotThk,BaseThk])
            cube([CornerLen,CornerWid,Gap]);
        }
    }
    } else {
        difference()
        {
            CylRot(Corner_Rad,TotHt);

            translate([0,0,-1])
            CylRot(In_Dia/2,TotHt+2);

            translate([0,0,BaseThk])
            GapAngCut();
            if (Corner_Ang == 120)
            {
                rotate([0,0,-36])
                translate([0,-Corner_Dia,-1])
                cube([Corner_Dia_x2,Corner_Dia_x2,TotHt+2]);

                rotate([0,0,-84])
                translate([-Corner_Dia_x2,-Corner_Dia,-1])
                cube([Corner_Dia_x2,Corner_Dia_x2,TotHt+2]);
            }
            else if (Corner_Ang == 45)
            {
                rotate([0,0,0])
                translate([0,-Corner_Dia,-1])
                cube([Corner_Dia_x2,Corner_Dia_x2,TotHt+2]);

                rotate([0,0,-45])
                translate([-Corner_Dia_x2,-Corner_Dia,-1])
                cube([Corner_Dia_x2,Corner_Dia_x2,TotHt+2]);
            }
            else
            {
                translate([0,-Corner_Dia,-1])
                cube([Corner_Dia_x2,Corner_Dia_x2,TotHt+2]);

                translate([-Corner_Dia,0,-1])
                cube([Corner_Dia_x2,Corner_Dia_x2,TotHt+2]);

                rotate([0,0,-Corner_Ang])
                translate([-Corner_Dia_x2,-Corner_Dia_x2,-1])
                cube([Corner_Dia_x2,Corner_Dia_x2,TotHt+2]);
            }
    }
}
}

module CylRot(CR_Rad=Corner_Rad,CR_HT=TotHt)
{
    // 90, 60, 36 are correct rotation
    if (Corner_Ang == 72)
    {
        rotate([0,0,18])
        cylinder(r=CR_Rad,h=CR_HT,$fn=Sides);
    }
    else if (Corner_Ang == 45)
    {
        rotate([0,0,22.5])
        cylinder(r=CR_Rad,h=CR_HT,$fn=Sides);
    }
    else if (Corner_Ang == 40)
    {
        rotate([0,0,10])
        cylinder(r=CR_Rad,h=CR_HT,$fn=Sides);
    }
    else if (Corner_Ang == 30)
    {
        rotate([0,0,15])
        cylinder(r=CR_Rad,h=CR_HT,$fn=Sides);
    }
    else if (Corner_Ang == 120)
    {
        rotate([0,0,-30])
        cylinder(r=CR_Rad,h=CR_HT,$fn=Sides);
    }
    else
    {
        rotate([0,0,0])
        cylinder(r=CR_Rad,h=CR_HT,$fn=Sides);
    }
}
module GapAngCut()
{
    if (Corner_Ang == 90)
    {
        echo("Not Doing Anything Here");
    } else {
        difference()
        {
            CylRot(Corner_Rad-Thk_DiagLen,TotHt);

            translate([0,0,-1])
            CylRot(Corner_Rad-Thk_DiagLen-Gap_DiagLen,TotHt+2);

            translate([1,-Corner_Dia,-1])           //go 1mm beyond bracket
            cube([Corner_Dia_x2,Corner_Dia_x2,TotHt+2]);

            translate([-Corner_Dia,0,-1])
            cube([Corner_Dia_x2,Corner_Dia_x2,TotHt+2]);

            rotate([0,0,-Corner_Ang-1])             //go 1 deg beyond bracket
            translate([-Corner_Dia_x2,-Corner_Dia_x2,-1])
            cube([Corner_Dia_x2,Corner_Dia_x2,TotHt+2]);
        }
    }
}
module Corner_3Connect()
{
    translate([0,0,-Ang45_Wid])
    rotate([45,0,0])
    difference()
    {
        rotate([-45,0,0])       //Easier to calculate cut by rotating back 1st
        difference()
        {
            rotate([45,0,0])
            rotate([0,0,45])
            union()
            {
                Corner();
                rotate([0,0,-45])
                translate([-Ang45_Wid,-TotHt,0])
                cube([Ang45_Len,Ang45_Wid + TotHt,TotHt]);
            }
            translate([0,0,-50 + Ang45_Wid])
            cylinder(d=50,h=50);
            translate([-25,-Y_Offset-50,-1])
            cube([50,50,50]);
        }
        translate([-25,-50,-1])
        cube([50,50,50]);
    }
}
module Corner_3Connect_x2()
{
    Corner_3Connect();
    translate([0,CornerWid+8,0])
    Corner_3Connect();
}
module Corner_3Connect_x4()
{
    Corner_3Connect_x2();
    translate([CornerLen+10,0,0])
    Corner_3Connect_x2();
}
module Corner_x2()
{
    Corner();
    if (Corner_Ang == 90)
    {
        translate([CornerLen+6,0,0])
        Corner();
    } else {
        translate([CornerLen+12,0,0])
        Corner();
    }
}
module Corner_x4()
{
    Corner_x2();
    if (Corner_Ang == 90)
    {
        translate([0,CornerWid+6,0])
        Corner_x2();
    } else {
        translate([0,CornerWid+8,0])
        Corner_x2();
    }
}
module Corners4()
{
    Corner();                                   //Draw Left Corner Bracket
    translate([Thk+FC_Len+Thk,0,0])
    rotate([0,0,90])
    Corner();                                   //Draw Right Corner Bracket
    translate([0,Thk+Gap+FC_Wid+Gap+Thk,0])
    rotate([0,0,-90])
    Corner();                                   //Draw Upper Left Corner Bracket
    translate([Thk+FC_Len+Thk,Thk+Gap+FC_Wid+Gap+Thk,0])
    rotate([0,0,180])
    Corner();                                   //Draw Upper Right Corner Bracket
}
if (Corner_Ang == 90)
{
if (Assembly == 1)
{
    Corners4();
    translate([0,0,FC_Ht+BaseThk+BaseThk])
    mirror([0,0,1])
    Corners4();

    translate([Thk,Thk,BaseThk])
    %cube([FC_Len,FC_Thk,FC_Ht]);              //Draw Bottom Side Foam Core
    #translate([Thk,Thk+Gap,BaseThk])
    cube([FC_Thk,FC_Wid,FC_Ht]);              //Draw Left side Foam Core
    translate([Thk,Thk+Gap+FC_Wid,BaseThk])
    %cube([FC_Len,FC_Thk,FC_Ht]);              //Draw Top Side Foam Core
    #translate([Thk+FC_Len-Gap,Thk+Gap,BaseThk])
    cube([FC_Thk,FC_Wid,FC_Ht]);              //Draw Right side Foam Core
//Only draw Top & Bottom Foam core if using a 3 connector
    if (Connect_Qty == 3)
    {
        #translate([TotThk,TotThk,BaseThk])
        cube([FC_Len-TotThk-Gap,FC_Wid-Thk-Thk,FC_Thk]);    //Draw Bottom Foam Core
        #translate([TotThk,TotThk,FC_Ht-BaseThk])
        cube([FC_Len-TotThk-Gap,FC_Wid-Thk-Thk,FC_Thk]);    //Draw Top Foam Core
    }
} else {
    if (Connect_Qty == 2)
    {

        if (Qty == 1)
        {
            Corner();
        }
        if (Qty == 2)
        {
            Corner_x2();
        }
        if (Qty == 4)
        {
            Corner_x4();
        }
        if (Qty == 8)
        {
            Corner_x4();
            translate([CornerLen+6+CornerLen+6,0])
            Corner_x4();
        }
    } else {
        if (Corner_Ang == 90)
        {
            if (Qty == 1)
            {
                Corner_3Connect();
            }
            if (Qty == 2)
            {
                Corner_3Connect_x2();
            }
            if (Qty == 4)
            {
                Corner_3Connect_x4();
            }
            if (Qty == 8)
            {
                Corner_3Connect_x4();
                translate([CornerLen+10+CornerLen+10,0,0])
                Corner_3Connect_x4();
            }
        } else {
            echo("********************************************");
            echo("***Corner_Ang MUST be 90 for Connect_Qty = 3");
            echo("********************************************");
        }
    }
}
} else {
    echo("***Calculating other than 90");
            %CylRot(Corner_Rad,TotHt);
        if (Qty == 1)
        {
            Corner();
        }
        if (Qty == 2)
        {
            Corner_x2();
        }
        if (Qty == 4)
        {
            Corner_x4();
        }
        if (Qty == 8)
        {
            Corner_x4();
            translate([CornerLen+10+CornerLen+10,,00])
            Corner_x4();
        }
}
```


[User]
Hey, I'm looking to create a customizable sharpie marker holder using OpenSCAD, and I want it to be able to hold various marker types, not just sharpies. It should be parametric, so I can easily adjust the number of holes, hole diameter, spacing, angle, and overall dimensions.

Here's what I'm thinking:

*   **Hole Layout:** Markers should be held in individual holes, arranged in a row.
*   **Parametric Holes:** I need to be able to specify the number of holes (`holeCount`), the diameter of each hole (`holeDiameter`), and the wall thickness of each hole (`holeWallThickness`). The depth of each hole (`holeHeight`) also needs to be configurable.
*   **Spacing:** There should be an adjustable gap between the holes (`holeGap`).
*   **Angled Presentation:** I would like the holes to be at an adjustable angle (`angle`). The base should be adjusted so that the holder does not tip over.
*   **Base:** The base should have a configurable thickness (`baseHeight`). The base should be large enough to provide stability.

I'm looking for a design that's robust and easy to modify. I would also appreciate it if the design is commented well so that I can understand the logic. Can you generate the required .scad file for me? I'm comfortable with basic math, so you don't need to comment on the math expressions if it's fairly trivial. I do _not_ want to use any external libraries. I just need the single .scad file.

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

 ______
/\  _  \
\ \ \L\ \
 \ \  __ \
  \ \ \/\ \
   \ \_\ \_\
    \/_/\/_/

 ____        __                   __
/\  _`\   __/\ \__               /\ \
\ \ \L\ \/\_\ \ ,_\    __    ____\ \ \___
 \ \ ,  /\/\ \ \ \/  /'__`\ /',__\\ \  _ `\
  \ \ \\ \\ \ \ \ \_/\  __//\__, `\\ \ \ \ \
   \ \_\ \_\ \_\ \__\ \____\/\____/ \ \_\ \_\
    \/_/\/ /\/_/\/__/\/____/\/___/   \/_/\/_/

 __  __   __
/\ \/\ \ /\ \
\ \ \/'/'\ \ \___      __      ___     ___      __
 \ \ , <  \ \  _ `\  /'__`\  /' _ `\ /' _ `\  /'__`\
  \ \ \\`\ \ \ \ \ \/\ \L\.\_/\ \/\ \/\ \/\ \/\ \L\.\_
   \ \_\ \_\\ \_\ \_\ \__/.\_\ \_\ \_\ \_\ \_\ \__/.\_\
    \/_/\/_/ \/_/\/_/\/__/\/_/\/_/\/_/\/_/\/_/\/__/\/_/

 ____
/\  _`\                  __
\ \ \/\ \     __    ____/\_\     __     ___
 \ \ \ \ \  /'__`\ /',__\/\ \  /'_ `\ /' _ `\
  \ \ \_\ \/\  __//\__, `\ \ \/\ \L\ \/\ \/\ \
   \ \____/\ \____\/\____/\ \_\ \____ \ \_\ \_\
    \/___/  \/____/\/___/  \/_/\/___L\ \/_/\/_/
                                 /\____/
                                 \_/__/

Ritesh Khanna - ritesh@gmail.com

Please enjoy, revise and share this sharpie marker holder freely.
I always appriciate it when credit is given back to me!

*/

holeCount = 8;          //Number of sharpies to hold.
holeDiameter=12;        //Diameter INCLUDING wall thickness of each hole.
holeWallThickness = 1.5;//Wall Thickness of the holes
holeHeight = 20;        //Height of each hole
holeGap = 1;            //Distance between each hole
angle=5;                //Angle of each hole
baseHeight = 2;         //Thickness of base.

//Logic, no need to edit below this line.
difference()
{
    holes();
    translate([0,0,-holeHeight])
    {
        base(holeHeight,18);
    }
}
translate([2,0,0])

base(baseHeight,18);

module base(height, addedDepth)
{
    length = (holeDiameter + holeGap) * holeCount + holeGap;
translate([ -( holeDiameter / 2 + holeGap * 2) ,-holeGap,0])
{
    cube( [holeDiameter + holeGap * 4 + addedDepth,length,height]);
};

}

module holes()
{
    for (i = [0:holeCount-1])
    {
        translate([0,i * (holeDiameter + holeGap) + holeDiameter *0.5, -(sin(25) * (holeDiameter/2) ) -0.1 ])
        {
            rotate([0,angle,0])
            {
                linear_extrude(holeHeight)
                {
                    difference()
                    {
                        circle(d=holeDiameter);
                        circle(d=(holeDiameter-holeWallThickness));
                    }
                }
            }
        }
    }
}
```


[User]
I'd like to design a parametric phone stand using OpenSCAD. I want to be able to adjust the overall dimensions of the stand, the phone's resting angle, the phone's depth and how much it sticks out of the stand, and also the slot for a charging cable. I’d like the design to be fairly simple, essentially a block with a cut-out for the phone to rest in, and a small channel for the cable.

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

*   **stand_height:** The overall height of the stand.
*   **stand_width:** The overall width of the stand (the dimension going "into" the screen if you were looking at it head on).
*   **stand_depth:** The overall depth of the stand (the dimension going from front to back).
*   **phone_depth:** The thickness of the phone that will be sitting in the stand.
*  **phone_lip:** How much of a lip is sticking out of the front face of the stand to support the phone (the lip that the bottom of the phone rests on).
*   **phone_angle:** The angle at which the phone will be leaning back, measured from vertical.
*   **phone_adjust_depth_pct:** A percentage value which will allow for the adjustment of the phone support position on the stand depth.
*   **phone_adjust_height_pct:** A percentage value which will allow for the adjustment of the phone support position on the stand height.
*   **charger_width:** The width of the hole for a charger connector at the base of the phone cutout.
*   **cord_width:** The width of the channel for the charging cord leading to the charger connector.
*   **slot_taper_pct:** The width of a taper in the charger slot expressed as a percentage of the available space.
*   **wall_thickness:** The wall thickness of the stand. I want to be able to adjust that as well.

I think it would be great if it also had an option to rotate it so it could print it on its side (to avoid needing supports), so maybe a parameter to control that as well. I'd like the dimensions to be in inches, and the final output to be in mm. Please include a function for the mm conversion.

I think that should cover it, let me know if you have any questions.

[Assistant]
custom_phone_stand.scad:
```
//
// Customizable Phone Stand
// version 1.0   11/21/2015
// by Steve Van Ausdall (DaoZenCiaoYen @ Thingiverse)
//

// preview[view:west, tilt:top diagonal]

/* [Main] */
// in inches
stand_height = 3.5 ; // [2:0.1:5]
// in inches
stand_width = 2.8 ; // [2:0.1:5]
// in inches
stand_depth = 2.8 ; // [2:0.1:5]
// in inches
phone_depth = 0.5 ; // [0.3:0.1:1]
// in inches
phone_lip = 0.2 ; // [0:0.1:0.5]
// in degrees
phone_angle = 27 ; // [10:35]
// in percent of stand depth
phone_adjust_depth_pct = 10 ; // [-20:1:10]
// in percent of stand height
phone_adjust_height_pct = -10 ; // [-20:1:10]
// the hole for the charger connetor in inches
charger_width = 0.5 ; // [0:0.1:1.5]
// the width of the charger cord in inches
cord_width = 0.15 ; // [0:0.05:1.5]
// in percent of possible height
slot_taper_pct = 30 ; // [0:5:100]
// in inches
wall_thickness = 0.15 ; // [0.1:0.05:0.5]

/* [Hidden] */
mm_in = 25.4 ;
thick = mm(wall_thickness) ;
phone_y = (stand_height/2) + (phone_adjust_height_pct*stand_height/100) ;
phone_x = (stand_depth/2) + (phone_adjust_depth_pct*stand_depth/100) ;
slot_taper = (stand_height - phone_y) * slot_taper_pct/100 ;
ff = 0.01 ;
bf = 1 ;
$fn=16 ;

function mm(in) = in * mm_in ;

main();

module main()
{
  render(convexity = 3)
    rotate_z(2)
    difference()
    {
      stand();
      cord_slot();
      charger_slot();
    }
}

module rotate_z(yn)
{
  if (yn == 0)
  {
    children(0);
  }
  else if (yn == 1)
  {
    rotate([0,0,180])
      translate([mm(-stand_depth/2),mm(-stand_height/2)-thick/2,mm(stand_width/2)])
      children(0);
  }
  else
  {
    rotate([0,0,-90])
      translate([mm(-stand_depth/2),0,thick/2])
      rotate([90,0,0])
      children(0) ;
  }
}

module cord_slot()
{
  translate([-thick,thick*1.5+ff,mm(-cord_width/2)])
    linear_extrude(height=mm(cord_width))
    offset(thick)
    cord_slot_shape();
}

module charger_slot()
{
  translate([mm(phone_x)-thick/2,mm(phone_y)-thick,0])
    rotate([0,0,phone_angle])
    rotate([0,90,0])
    linear_extrude(height=mm(phone_depth)+thick+ff)
    polygon(points=[
      [0,mm(slot_taper)+thick*2],
      [mm(charger_width/2),thick*2],[mm(charger_width/2),0],
      [-mm(charger_width/2),0],[-mm(charger_width/2),thick*2]
    ]);
}

module stand()
{
  translate([0,0,mm(-stand_width/2)])
    linear_extrude(height=mm(stand_width))
    stand_outline();
}

module stand_outline()
{
  difference()
  {
    offset(r=thick/2) stand_shape();
    offset(r=-thick/2) stand_shape();
  }
}

module cord_slot_shape()
{
  square([mm(phone_x)+thick/2,mm(stand_height)]);
}

module stand_shape()
{
  difference()
  {
    square([mm(stand_depth),mm(stand_height)]);
    translate([mm(phone_x),mm(phone_y)])
      rotate([0,0,phone_angle])
      translate([0,mm(-phone_y-bf)])
      difference()
      {
        square([mm(stand_depth+bf),mm(stand_height+bf*2)]);
        square([mm(phone_depth)+thick,mm(phone_y+bf)]);
        translate([mm(phone_depth)+thick,0])
          square([mm(phone_lip),mm(phone_y+bf+phone_lip)]);
      };
  }
}
```


[User]
Okay, I need an OpenSCAD script that can generate shaft couplers. The coupler needs to be parametric, allowing me to specify the shape, gender (male or female), diameter, and length of the shafts on either end of the coupler. Also, a tolerance percentage for male/female fit is needed, as well as set screws.

Specifically, here's what I'm looking for:

**Shaft Configurations:**

*   **Shape Options:** The script should support the following shaft shapes: Hexagonal, Square, Round, Round with a keyway, Round with one flat, and Round with two flats.
*   **Gender:** Each shaft end can be either male (protruding) or female (receiving).
*   **Diameter:** The diameter of the shaft should be configurable. For square and hex shapes, this is measured across the flats.
*   **Cutout/Keyway:** For "Round+Key", specify the size of the keyway. For "Round+1Flat" and "Round+2Flat", specify how much of the round shaft is shaved off to make the flat(s).
*   **Length:** The length of the coupler on each shaft side should be configurable.
*   **Tolerance:** A percentage-based tolerance should be available to shrink male shafts or grow female receivers for proper fit.
*   **Set Screws:** The script must include optional set screws for each shaft. They should be on by default for round shafts but allow to be forced for non-round types if needed.
*   For "Round" female shafts, the set screw holes need to be properly sized.

**General Coupler Settings:**

*   **Middle Length:** There should be a parameter to specify the amount of the middle area to fill in for structural support. This doesn't change the overall coupler length, just the "solidness" of the center.
*   **Set Screw Diameter:** A parameter to specify the diameter of set screw holes.
*   **Keyway Depth Factor:**  A way to back off the keyway depth on male/female connections, to allow more play for the key, specified as a percentage (0.70, e.g.).
*   **Single Form Coupler:** When the first shaft is male and larger, and the second shaft is female and smaller, there should be a special single-form mode to adapt a smaller shaft to a larger one. If this mode is not desired, allow it to be disabled with an option.
*   **Minimum Thickness:** For female receivers, specify a minimum wall thickness.
*   **Thickness for Setscrews:** For round female receivers, specify a slightly larger minimum wall thickness that is suitable for the setscrews.

**Libraries and Requirements**

*   I don't want to use any external libraries.

**Output:**

*   The output should be a single `.scad` file with all the necessary functions, modules, and parameters.
*   The final coupler should have a clean and well-defined design.

Could you provide me with a parametric OpenSCAD file that can generate these shaft couplers?

[Assistant]
shaftbuddy.scad:
```
inch = 25.4*1;
$fn=32*1;

TEST_MODE = 0*1;

/* [Shaft 1] */

// Shape of shaft 1 (the lower part of the coupler).
s1_type = "HEX"; // [HEX,SQUARE,ROUND,ROUND+KEY,ROUND+1FLAT,ROUND+2FLAT]

// Gender of shaft 1.
s1_gender = "FEMALE"; // [MALE,FEMALE]

// Diameter of shaft 1 (mm). For SQUARE and HEX, this is measured across the flats.
s1_dia  = 10;

// For ROUND+KEY, this is the size of the keyway (mm). For ROUND+1FLAT and ROUND+2FLAT, this is the amount of the round shaft that is shaved off to make the flat (mm).
s1_cutout = 2;

// Length of the coupler on the shaft 1 side (mm).
s1_length = 12;

// Tolerance percentage -- how much to shrink a male shaft or how much to grow a female receiver (percentage).
s1_tol_pct = 5; // [0:15]

// Force set screws for shaft 1?
s1_force_setscrews = 1; // [1:Yes, 0:No]

/* [Shaft 2] */

// Shape of shaft 2 (the upper part of the coupler).
s2_type = "ROUND"; // [HEX,SQUARE,ROUND,ROUND+KEY,ROUND+1FLAT,ROUND+2FLAT]

// Gender of shaft 2.
s2_gender = "FEMALE"; // [MALE,FEMALE]

// Diameter of shaft 1 (mm). For SQUARE and HEX, this is measured across the flats.
s2_dia  = 10;

// For ROUND+KEY, this is the size of the keyway (mm). For ROUND+1FLAT and ROUND+2FLAT, this is the amount of the round shaft that is shaved off to make the flat (mm).
s2_cutout = 2;

// Length of the coupler on the shaft 1 side (mm).
s2_length = 12;

// Tolerance percentage -- how much to shrink a male shaft or how much to grow a female receiver (percentage).
s2_tol_pct = 5; // [0:15]

// Force set screws for shaft 2? (Set screws are default for round shafts)
s2_force_setscrews = 1; // [1:Yes, 0:No]

/* [General settings] */

// For male/female couplers, how much of the middle area to fill in for structural strength (mm). This doesn't add to the coupler length, rather it just "fills in" some of the two sides with solid matter.
middle_length = 3;

// For ROUND FEMALE couplers, diameter of side holes for set screws (mm).
set_screw_dia = 3;

// How much to "back off" the keyway depth. A value of 0.50 would mean that half the key is in the male shaft and half is in the female receiver. Higher values give more play for the key, and are a form of tolerance.
keyway_depth_factor = 0.70*1;

// For couplers where shaft 1 is male, shaft 2 is female, and shaft 1 is significantly larger than shaft 2, we'll attempt to make a "single form" coupler, wherein shaft 2 goes entirely inside of the coupler, basically adapting it to become the size of shaft 1. If this behavior is undesired, set this to "Yes", and a standard two-sided coupler will be generated.
disable_single_form = 0; // [0:No, 1:Yes]

attempt_single_form = !disable_single_form;

// For female receivers, minimum amount of plastic on the outside for strength (mm).
min_thickness = 3;

// For female ROUND types, minimum amount of plastic on the outside -- the setscrew will go through this material, so it's typically a bit more than just min_thickness
thickness_for_setscrews = 6;

// take the measure across the flats and make it into the measure across the points
function flats2points(form,d) =
    form=="HEX"    ? d*(2/sqrt(3)) :
    form=="SQUARE" ? d*(2/sqrt(2)) :
    form=="TRIANGLE" ? d*(sqrt(2)) :
    d; // < round forms have no change

module hexagon(dia_flats) {
    circle($fn=6,d=flats2points("HEX",dia_flats));
}

module shaft_form(form, gender, d, tol, cutout=0) {
    tol_factor = gender=="MALE" ? (1-tol) : (1+tol);
    dd = d*tol_factor;
    if      (form=="HEX") hexagon(dd);
    else if (form=="TRIANGE") circle($fn=3,d=dd);
    else if (form=="PENT") circle($fn=5,d=dd); // << aint nobody gonna need this
    else if (form=="SQUARE") square(dd,center=true);
    else if (form=="ROUND") circle(d=dd);
    else if (form=="ROUND+1FLAT" || form=="ROUND+2FLAT") {
        difference() {
            circle(d=dd);
            for (m = form=="ROUND+2FLAT" ? [0,1] : [0]) {
                mirror([0,m,0]) translate([-dd/2, (d/2-cutout)*tol_factor]) square([dd,dd]);
            }
        }
    }else if(form=="ROUND+KEY") {
        if (gender=="FEMALE") {
            circle(d=dd);
            rotate(90) translate([-cutout/2,0]) square([cutout,d/2+cutout*keyway_depth_factor]);
        } else {
            difference() {
                circle(d=dd);
                translate([-cutout/2,d/2-cutout*keyway_depth_factor]) square([cutout,cutout]);
            }
        }
    }
}

// types: ["HEX","SQUARE","ROUND","ROUND+KEY","ROUND+1FLAT","ROUND+2FLAT"]
//    also valid, but may have bugs for certain geometries: ["TRIANGLE","PENT"]
// genders: ["MALE","FEMALE"]
module coupler(
    s1_type, s1_gender, s1_dia, s1_cutout, s1_tol_pct, s1_length,
    s2_type, s2_gender, s2_dia, s2_cutout, s2_tol_pct, s2_length,
    set_screw_dia = 3,
    keyway_depth_factor = 0.70,
    attempt_single_form = true,
    min_thickness = 3,
    thickness_for_setscrews = 6) {

    //echo(">>",s1_type, s1_gender, s1_dia, s1_cutout, s1_tol_pct, s1_length,     s2_type, s2_gender, s2_dia, s2_cutout, s2_tol_pct, s2_length);

    s1_tol = s1_tol_pct/100;
    s2_tol = s2_tol_pct/100;
    s1_dia_max = flats2points(s1_type, s1_dia);
    s2_dia_max = flats2points(s2_type, s2_dia);

    // all-in-one mode?
    if (attempt_single_form && s1_gender=="MALE" && s2_gender=="FEMALE" && s1_dia/2-s2_dia/2>=min_thickness) {

        color("cyan") difference() {
            linear_extrude(s1_length+s2_length, convexity=5) difference() {
                shaft_form(s1_type, s1_gender, s1_dia, s1_tol, s1_cutout);
                shaft_form(s2_type, s2_gender, s2_dia, s2_tol, s2_cutout);
            }

            // we do s2 set screws only, since it doesnt make sense to do the s1 set screw holes, since s1 is male by definition here

            // s2 set screws
            if (s2_type=="ROUND" || s2_force_setscrews) {
                set_screw_angles =
                    s1_type=="HEX" ? [30,150,270] :
                    s1_type=="ROUND+KEY" ? [0,180,270] :
                    [0,90,180,270];
                for (theta = set_screw_angles) {
                    rotate(theta) translate([0,0,s1_length+s2_length/2]) rotate([0,90,0]) cylinder(d=set_screw_dia, h=s1_dia+1);
                }
            }
        }

    } else {
        // normal two-sided thing

        // thickness is valid for female only, but needed for below general calculation
        thickness1 =
            s1_type=="ROUND"?thickness_for_setscrews:
            s1_type=="ROUND+KEY"?min_thickness+s1_cutout:
            min_thickness;
        od1 = s1_dia_max + (s1_gender=="FEMALE" ? thickness1 : 0);

        thickness2 =
            s2_type=="ROUND"?thickness_for_setscrews:
            s2_type=="ROUND+KEY"?min_thickness+s2_cutout:
            min_thickness;
        od2 = s2_dia_max + (s2_gender=="FEMALE" ? thickness2 : 0);

        od = max(od1,od2);

        if (s1_gender=="MALE") {
            linear_extrude(s1_length, convexity=5) {
                shaft_form(s1_type, s1_gender, s1_dia, s1_tol, s1_cutout);
            }
        } else { // s1_gender FEMALE
            difference() {
                linear_extrude(s1_length, convexity=5) difference() {
                    circle(d=od);
                    shaft_form(s1_type, s1_gender, s1_dia, s1_tol, s1_cutout);
                }
                if (s1_type=="ROUND" || s1_force_setscrews) {
                    set_screw_angles =
                        s1_type=="HEX" ? [30,150,270] :
                        s1_type=="ROUND+KEY" ? [0,180,270] :
                        [0,90,180,270];
                    for (theta = set_screw_angles) {
                        rotate(theta) translate([0,0,s1_length/2]) rotate([0,90,0]) cylinder(d=set_screw_dia, h=od);
                    }
                }
            }
        }

        if (s1_gender!=s2_gender) {
            translate([0,0,s1_length-middle_length/2]) {
                cylinder(d=od, h=middle_length);
            }
        }

        translate([0,0,s1_length]) {
            if (s2_gender=="MALE") {
                linear_extrude(s2_length, convexity=5) {
                    shaft_form(s2_type, s2_gender, s2_dia, s2_tol, s2_cutout);
                }
            } else { // s2_gender FEMALE
                difference() {
                    linear_extrude(s2_length, convexity=5) difference() {
                        circle(d=od);
                        shaft_form(s2_type, s2_gender, s2_dia, s2_tol, s2_cutout);
                    }
                    if (s2_type=="ROUND" || s2_force_setscrews) {
                        set_screw_angles =
                            s2_type=="HEX" ? [30,150,270] :
                            s2_type=="ROUND+KEY" ? [0,180,270] :
                            [0,90,180,270];
                        for (theta = set_screw_angles) {
                            rotate(theta) translate([0,0,s2_length/2]) rotate([0,90,0]) cylinder(d=set_screw_dia, h=od);
                        }
                    }
                }
            }

        }

    }
}

module TEST_ALL() {
    // test all combinations and lay them out in a big array
    types = ["HEX","SQUARE","ROUND","ROUND+KEY","ROUND+1FLAT","ROUND+2FLAT"];
    genders = ["MALE","FEMALE"];
    dias1 = [15];
    dias2 = [9]; //dias1;
    cutout = 2;
    tol = 5;
    s_length = 10;
    for (s1_type_i = [0:len(types)-1]) {
        s1_type = types[s1_type_i];

        for (s1_gender_i = [0:len(genders)-1]) {
            s1_gender = genders[s1_gender_i];

            for (s1_dia_i = [0:len(dias1)-1]) {
                s1_dia = dias1[s1_dia_i];

                for (s2_type_i = [0:len(types)-1]) {
                    s2_type = types[s2_type_i];

                    for (s2_gender_i = [0:len(genders)-1]) {
                        s2_gender = genders[s2_gender_i];

                        for (s2_dia_i = [0:len(dias2)-1]) {
                            s2_dia = dias2[s2_dia_i];

                            x = (s1_type_i*len(genders)+s1_gender_i)*len(dias1)+s1_dia_i;
                            y = (s2_type_i*len(genders)+s2_gender_i)*len(dias2)+s2_dia_i;
                            echo(x,y,
                                s1_type,s1_gender,s1_dia,cutout,tol,s_length,
                                s2_type,s2_gender,s2_dia,cutout,tol,s_length);

                            translate([30*x,30*y]) coupler(
                                s1_type,s1_gender,s1_dia,cutout,tol,s_length,
                                s2_type,s2_gender,s2_dia,cutout,tol,s_length
                            );
                        }
                    }
                }
            }
        }
    }
}

if (TEST_MODE) {
    TEST_ALL();

} else {
    coupler(
        s1_type, s1_gender, s1_dia, s1_cutout, s1_tol_pct, s1_length,
        s2_type, s2_gender, s2_dia, s2_cutout, s2_tol_pct, s2_length,
        set_screw_dia,
        keyway_depth_factor,
        attempt_single_form,
        min_thickness,
        thickness_for_setscrews);
}
```


[User]
Hey, I'm looking to create some personalized napkin rings, and I'd like an OpenSCAD file that lets me do that. Basically, I want a ring shape with text wrapped around it, and I'd like it to be parametric so I can easily change the size and the text.

Specifically, the ring itself should be a cylinder with a hole cut through the center, like a washer. The text should be extruded, kind of like raised lettering, and wrapped around the outer edge of the ring. I'd like to be able to set the ring's outer radius, the inner radius, the height, the text to be displayed, and the font.

I think I'd also like the text to evenly spaced around the circumference, so if I have a really long word, the letters would just get scrunched together closer to keep them all on the ring. I'd want to be able to set the character size, and the letter height (how far they stick out) separately.

I'm imagining a fairly simple design so, something that would be relatively efficient to print. I do not need any special libraries (like MCAD, BOSL, etc). I'm also not including any custom libraries or files. Can you whip up that SCAD for me?

[Assistant]
GobbleGobble.scad:
```
Text = "GOBBLE GOBBLE";

union() {
    difference() {
        cylinder(h = 5, r = 25, $fn = 64);
        cylinder(h = 5, r = 20, $fn = 64);
    }

    for (i = [0 : len(Text) -1]) {
        rotate([0,0,-11*i])
        translate([0,24,0])
        linear_extrude(height = 5)
        text(size = 8, text = Text[i], font = "Chewy", halign = "center", valign= "bottom", $fn = 32);
    }
}
```


[User]
Hey, I'm looking for a customizable trash bin for my workbench. I have a specific design in mind, but it needs to be adjustable.

Here are the basic requirements:

*   It should have a cylindrical base and a wider cylindrical top, like a truncated cone.
*   The walls should be made of pillars that twist as they go up.
*   I want to be able to set the base and top diameters, the overall height, and the thickness of the base and top rims.
*   The pillars need to have a configurable diameter, twist angle, and the number of them should be adjustable, and it would be great to be able to select pillars that go clockwise, counter-clockwise, or both.
*   I would prefer that everything is made using built-in OpenSCAD functions - I don't need to use any custom libraries, except perhaps `MCAD`. I'd like to avoid any `BOSL` or other libraries, please.

I'm hoping for a parametric design where I can tweak all these parameters to fit my specific needs.

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

 ______
/\  _  \
\ \ \L\ \
 \ \  __ \
  \ \ \/\ \
   \ \_\ \_\
    \/_/\/_/

 ____        __                   __
/\  _`\   __/\ \__               /\ \
\ \ \L\ \/\_\ \ ,_\    __    ____\ \ \___
 \ \ ,  /\/\ \ \ \/  /'__`\ /',__\\ \  _ `\
  \ \ \\ \\ \ \ \ \_/\  __//\__, `\\ \ \ \ \
   \ \_\ \_\ \_\ \__\ \____\/\____/ \ \_\ \_\
    \/_/\/ /\/_/\/__/\/____/\/___/   \/_/\/_/

 __  __   __
/\ \/\ \ /\ \
\ \ \/'/'\ \ \___      __      ___     ___      __
 \ \ , <  \ \  _ `\  /'__`\  /' _ `\ /' _ `\  /'__`\
  \ \ \\`\ \ \ \ \ \/\ \L\.\_/\ \/\ \/\ \/\ \/\ \L\.\_
   \ \_\ \_\\ \_\ \_\ \__/.\_\ \_\ \_\ \_\ \_\ \__/.\_\
    \/_/\/_/ \/_/\/_/\/__/\/_/\/_/\/_/\/_/\/_/\/__/\/_/

 ____
/\  _`\                  __
\ \ \/\ \     __    ____/\_\     __     ___
 \ \ \ \ \  /'__`\ /',__\/\ \  /'_ `\ /' _ `\
  \ \ \_\ \/\  __//\__, `\ \ \/\ \L\ \/\ \/\ \
   \ \____/\ \____\/\____/\ \_\ \____ \ \_\ \_\
    \/___/  \/____/\/___/  \/_/\/___L\ \/_/\/_/
                                 /\____/
                                 \_/__/

Ritesh Khanna - ritesh@gmail.com

Please enjoy, revise and share this desktop garbage bin freely.
I always appriciate it when credit is given back to me!

*/

//Diameter at the very base of the bin
baseDiameter = 70;
//Thickness of the base plate.
baseThickness = 4;
//Diameter at the very top of the bin.
topDiameter = 90;
//Thickness of the top rim.
topThickness = 4;
//Overall height of the bin.
height = 90;
//Number of pillars (this is per clockwise and counter-clockwise pillars).
pillars = 12;
//Diameter of each pillar
pillarDiameter = 3;
//How twisty to make the pillars.
pillarTwist = 180;
//You can have pillars going clockwise, counter-clockwise or both.  Both is best for stability.
pillarSets = "both"; // [both, clockwise, coutner-clockwise]

//Internal Variables - No need to change anything below this line.
overhang = (topDiameter - baseDiameter)/2;
angle = atan(height/overhang);
baseDiameterTop = (baseThickness / tan(angle)) * 2 + baseDiameter;
topDiameterBottom = topDiameter - (topThickness / tan(angle)) * 2;

//Logic
top();
base();
if (pillarSets == "both" || pillarSets == "clockwise") { pillars(true); }
if (pillarSets == "both" || pillarSets == "counter-clockwise") { pillars(false); }

//Modules
module pillars(invert)
{
    for (i = [1:pillars])
    {
        rotate([0,0,360/pillars * i])
        {
            translate([0,0,baseThickness])
            {
                linear_extrude(height=height-baseThickness-0.1,scale = topDiameter/baseDiameter,twist=invert?-pillarTwist:pillarTwist)
                {
                    translate([baseDiameter/2 - pillarDiameter/2,0,0])
                    {
            circle(d=pillarDiameter);
                    }
                }
            }
        }
    }
}

module top()
{
    translate([0,0,height-topThickness])
    {
        difference()
        {
            cylinder( d1=topDiameterBottom, d2=topDiameter,h=topThickness);

                        cylinder( d1=topDiameterBottom-pillarDiameter*2, d2=topDiameter-pillarDiameter*3,h=topThickness);
        }
    }
}

module base()
{
    cylinder( d1=baseDiameter, d2=baseDiameterTop,h=baseThickness);
}
```


[User]
Hey! I'm trying to design an iPhone stand for time-lapses. I have an existing design but it's not very flexible, and I want to make a parametric version. It's basically got a few key parts: the base or 'foot', a central body, and a clamping mechanism to hold the phone.

The 'foot' should have a configurable length, `footLength`. It's sort of like a long, rounded bar with an attachment point for the body, maybe with a smaller diameter than the main body. Also, i want to be able to angle a version of the foot at an angle - i think I'd like to add a `footAngle` parameter. The existing design used a cylinder with a length dimension, but it may be more appropriate to represent this as a series of points which are then used to generate the hull. The diameter should be configurable as `footDiameter`. The existing design includes some negative space within the body for the foot which can be ignored for the parametric model. I'd also like to have a `footHeight` parameter for the thickness of the foot.

The central body is a stack of plates, basically short cylinders with a small width attached, that form a sort of tower, along with the phone clamp. There are a number of `bottomPlate`s, as well as a `plateSpace` parameter which is the distance between the plates. I need `bottomPlateSize`, `bottomPlateWidth`, and `bottomPlateHeight` parameters for controlling the dimensions of the plates, and also a `holeDiameter` to create a central opening on each `bottomPlate`. I need to be able to set the number of plates. Let's go with the parameter name `numberOfPlates`.

The phone clamp needs a configurable `iClampDia` which is the diameter for the phone. There is also an `iClampLen` for the length of the clamp, and an `iClampWidth` and `iClampHeight`. It has a few hook-like shapes on the outside edge to grip the phone, defined by parameters `iRbHookWidth`, but I think a simpler clamp may be more universal. I'd like the clamp to be an extrusion that curves around the device.

I also need the ability to rotate and translate the different components so that they sit in the right orientation and at the right locations relative to each other.

Can you generate OpenSCAD files for this? I don't need any libraries in particular; just code that can be copy-pasted into OpenSCAD.

[Assistant]
iphone_stand.scad:
```

// base length of foot
footLength=80; // [50:150]

// height of iPhone
iClampDia = 8.5; // [7:0.1:10]

// lenght of clip
iClampLen = 15; // [7:0.1:100]

module banner() {
}

bottomPlateSize=10;
bottomPlateWidth=8;
bottomPlateHeight=3;
holeDiameter=4.5;
iClampWidth = 3;
iClampHeight = 24.5;
plateSpace=4.2;
iRbHookWidth = 5;
footDiameter=8;

module bottomPlate(x=bottomPlateHeight, y=bottomPlateSize) {
  difference() {
    union() {
      cylinder (h=x, d=y);
      translate ([-bottomPlateWidth,-y/2,0]) cube ([bottomPlateWidth, y, x]);
    }
    cylinder (h=x+0.2, d=holeDiameter);
  }
}

module clamp() {
  linear_extrude (height=iClampHeight) {
    translate ([-iClampDia/2,iClampDia/2+iClampWidth])
    difference() {
      union() {
        translate ([-iClampWidth,0]) square ([iClampWidth, iClampLen]);
        translate ([-2*iClampWidth, iClampLen - iClampWidth]) square ([iRbHookWidth, iClampWidth]);
        translate ([-3*iClampWidth, iClampLen - iRbHookWidth]) square ([iClampWidth, iRbHookWidth]);
        translate ([2*iClampWidth + iRbHookWidth - (8.5-iClampDia), iClampLen - iClampWidth]) square ([iRbHookWidth, iClampWidth]);
        translate ([3*iClampWidth + iRbHookWidth + 0.5 - (8.5-iClampDia), iClampLen - iRbHookWidth]) square ([iClampWidth, iRbHookWidth]);
        translate ([iClampDia/2,0])
        difference() {
          circle (iClampDia/2+iClampWidth);
          circle (iClampDia/2);
        }
        translate ([iClampDia,0]) square ([iClampWidth, iClampLen]);
      }
      square ([iClampDia,iClampHeight+iClampDia]);
    }
  }
}

module body() {
  translate ([-10,35,22])
  rotate ([0,270,0])
  union() {
    pom = bottomPlateSize;
    bottomPlate(y=pom);
    translate ([0,0,plateSpace+bottomPlateHeight]) bottomPlate(y=pom);
    translate ([0,0,2*(bottomPlateHeight+plateSpace)]) bottomPlate(y=pom);
    translate ([0,0,3*(bottomPlateHeight+plateSpace)]) bottomPlate(y=pom);
    translate ([-5,0,0]) rotate ([0,0,90]) clamp();
  }
}

module foot30() {
  translate ([0,0,15])
  rotate ([0,270,0])
  difference() {
    union() {
      difference() {
        hull() {
          cube ([footLength,footDiameter,footDiameter]);
          translate ([-12,footDiameter/2,footDiameter/2]) sphere (d=footDiameter);
        }
        translate ([-23,0,0]) cube ([footDiameter,footDiameter,footDiameter]);
      }

      translate ([footLength+4, footDiameter/2, -3]) rotate ([0,30,0]) bottomPlate (x=plateSpace-0.15,y=footDiameter);
    }
    translate ([60+(footLength-80), 0, 15.55]) rotate ([0,30,0]) cube ([30, 10, 10]);
  }
}

module foot() {
  translate ([0,0,12.8])
  rotate ([0,270,0])
  union() {
    difference() {
      hull() {
        cube ([footLength,footDiameter,footDiameter]);
        translate ([-10,footDiameter/2,footDiameter/2]) sphere (d=footDiameter);
      }
      translate ([-21,0,0]) cube ([footDiameter,footDiameter,footDiameter]);
      translate ([footLength-6.9, 0, 10.1]) rotate([0,30,0]) cube ([footDiameter,footDiameter,footDiameter]);
      translate ([footLength, 0, -7.3]) rotate([0,-30,0]) cube ([footDiameter,footDiameter,footDiameter]);
    }
    translate ([footLength+8, footDiameter/2, 2]) bottomPlate (x=plateSpace-0.15,y=footDiameter);
  }
}

foot();
translate ([15,0,0]) foot30();
translate ([-15-8,8,0]) rotate ([0,0,180]) foot30();
translate ([20,0,iClampLen-10]) body();

```


[User]
Hey, I'm looking to create a customizable text keyring using OpenSCAD. I want to be able to specify the text, font, and then have individual control over the height and spacing of each letter. I also want to include a loop for attaching it to a keyring. I want to be able to adjust the position of this loop separately from the text. Additionally, I'd like to have a twisting effect applied to the letters.

Ideally, I'd like the design to be parametric so I can change all these things using sliders in the Customizer. The font should be selectable from a list of fonts, not just a fixed one. Could you generate an OpenSCAD file that does this? It would be great if the design could also handle up to 8 characters for the text, and that the loop is created using the text() function too, allowing a font to be selected for it.

[Assistant]
NameKeyringV1.6.scad:
```
/* [Text & Font] */

// for your keyring
Font_name = "Chewy"; // [ Anton, Chewy, Forte, Gloria Hallelujah, Lobster, Luckiest Guy, Open Sans Extrabold, Oswald, Pacifico, Press Start 2P, Racing Sans One, Sigmar One, Snap ITC]

// for your keyring
Text = "Jennifer";

// of the preview
Rotation = 50; // [0:5:360]

/* [Spacing and Height] */

letter_1_height = 6; // [-20:1:20]
letter_1_space = 10; // [-20:1:20]

letter_2_height = 5; // [-20:1:20]
letter_2_space = 10; // [-20:1:20]

letter_3_height = 4; // [-20:1:20]
letter_3_space = 10; // [-20:1:20]

letter_4_height = 6; // [-20:1:20]
letter_4_space = 9.6; // [-20:1:20]

letter_5_height = 4; // [-20:1:20]
letter_5_space = 9; // [-20:1:20]

letter_6_height = 5; // [-20:1:20]
letter_6_space = 9; // [-20:1:20]

letter_7_height = 5; // [-20:1:20]
letter_7_space = 9; // [-20:1:20]

letter_8_height = 5; // [-20:1:20]
letter_8_space = 10; // [-20:1:20]

/* [ Twist ] */

// angle in degrees
twist = -5; // [-10:0.5:10]

// of twist rotation
center = 30; // [0:1:70]

/* [ Loop Settings ] */

// adjument
Loop_x_position = -65; // [-150:1:50]

// adjument
Loop_y_position = 0; // [-20:1:20]

// to use (default : u)
Loop_character = "o";

// to use (default : Chewy)
Loop_font = "Chewy"; // [ Anton, Chewy, Forte, Gloria Hallelujah, Lobster, Luckiest Guy, Open Sans Extrabold, Oswald, Pacifico, Press Start 2P, Racing Sans One, Sigmar One, Snap ITC]

/* [Hidden */

// between letters adjust the overlap (e.g. 5 letters = 5 comma seperated numbers [5,5,4.8,4.2,4,5,6])
spacing = [0,letter_1_space,letter_2_space,letter_3_space,letter_4_space,letter_5_space,letter_6_space,letter_7_space, letter_8_space];

// of each letter (e.g. 5 letters = 5 comma seperated numbers [4,3,3.5,3,4])
height = [letter_1_height,letter_2_height,letter_3_height,letter_4_height,letter_5_height,letter_6_height,letter_7_height,letter_8_height];

rotate([0,0,Rotation]) {

    linear_extrude(height = 3, $fn = 100) {
        translate ([-center-Loop_x_position,Loop_y_position,0]) rotate([0,0,-90])
        text(size = 20, text = Loop_character, font = Loop_font, halign = "center", valign= "center", $fn = 100);
    }

    for (i = [0 : len(Text) -1]) {
       linear_extrude(height = height[i], twist = twist, $fn = 100) {
            translate ([(spacing[i]*i)-center,0,0])
            text(size = 25, text = Text[i], font = Font_name, halign = "center", valign= "center", $fn = 100);
        }
    }
}

```
NameKeyringV1.5.scad:
```
/* [Text & Font] */

// for your keyring
Font_name = "Chewy"; // [ Anton, Chewy, Forte, Gloria Hallelujah, Lobster, Luckiest Guy, Open Sans Extrabold, Oswald, Pacifico, Press Start 2P, Racing Sans One, Sigmar One, Snap ITC]

// for your keyring
Text = "Burny";

// of the preview
Rotation = 50; // [0:5:360]

/* [Spacing and Height] */

letter_1_height = 6; // [-20:1:20]
letter_1_space = 10; // [-20:1:20]

letter_2_height = 5; // [-20:1:20]
letter_2_space = 10; // [-20:1:20]

letter_3_height = 4; // [-20:1:20]
letter_3_space = 10; // [-20:1:20]

letter_4_height = 6; // [-20:1:20]
letter_4_space = 10; // [-20:1:20]

letter_5_height = 4; // [-20:1:20]
letter_5_space = 10; // [-20:1:20]

letter_6_height = 5; // [-20:1:20]
letter_6_space = 10; // [-20:1:20]

/* [ Twist ] */

// angle in degrees
twist = -5; // [-10:0.5:10]

// of twist rotation
center = 20; // [0:1:70]

/* [ Loop Settings ] */

// adjument
Loop_x_position = 10; // [-150:1:50]

// adjument
Loop_y_position = 0; // [-20:1:20]

// to use (default : u)
Loop_character = "o";

// to use (default : Chewy)
Loop_font = "Chewy"; // [ Anton, Chewy, Forte, Gloria Hallelujah, Lobster, Luckiest Guy, Open Sans Extrabold, Oswald, Pacifico, Press Start 2P, Racing Sans One, Sigmar One, Snap ITC]

/* [Hidden */

// between letters adjust the overlap (e.g. 5 letters = 5 comma seperated numbers [5,5,4.8,4.2,4])
spacing = [0,letter_1_space,letter_2_space,letter_3_space,letter_4_space,letter_5_space,letter_6_space];

// of each letter (e.g. 5 letters = 5 comma seperated numbers [4,3,3.5,3,4])
height = [letter_1_height,letter_2_height,letter_3_height,letter_4_height,letter_5_height,letter_6_height];

rotate([0,0,Rotation]) {

    linear_extrude(height = 3, $fn = 100) {
        translate ([-center-Loop_x_position,Loop_y_position,0]) rotate([0,0,-90])
        text(size = 20, text = Loop_character, font = Loop_font, halign = "center", valign= "center", $fn = 100);
    }

    for (i = [0 : len(Text) -1]) {
       linear_extrude(height = height[i], twist = twist, $fn = 100) {
            translate ([(spacing[i]*i)-center,0,0])
            text(size = 25, text = Text[i], font = Font_name, halign = "center", valign= "center", $fn = 100);
        }
    }
}

```