[User]
Hi, I'm looking to design some custom glass name tags that I can 3D print. I've got a basic idea down but need some help generating the OpenSCAD files.

The tags should have a few key features. First, there should be a text component, where the first letter can be styled differently than the rest of the text (different size, position).  The whole text should be linear extruded to a specific thickness. There will need to be adjustable spacing between characters in the remaining text.

Second, I want to be able to connect separate parts of the text (like the dot on an "i" or a hyphen) with small connector bars. These should be parametrically definable with position, length and rotation.

Third, there will be a platform that the text sits on, that has a clip-like structure on the bottom to allow it to attach to a glass rim. The platform should be rectangular with rounded edges and a notch in the clip to improve flexibility. It also needs a small cylindrical cutout for the glass rim.

Finally, I need to be able to set the font, its size, overall tag length and height. I will be using this in combination with fonts that have different kerning, so the platform length may have to be adjusted manually after the text is set.

I'm hoping to have all these elements be parameterized within the OpenSCAD file so I can easily adjust the design without having to get into the core code too deeply. I also want to make sure I can easily choose which font I use, set the text size, spacing, and connector parameters. Could you also make sure the design uses a good amount of facets? I want the text to look smooth, so setting `$fn = 128` would be perfect.

I don't have any external libraries included for this, so any code should use built-in OpenSCAD features.

[Assistant]
GlassNameTag.scad:
```
Font="Ravie";
FirstLetter = "L"; // First letter can be larger and have small offset
FirstLetterPositionX = -8;
FirstLetterPositionY = -1;
FirstLetterSize = 10;
RemainingText = "ina-Sophie"; // Remaining text
RemainingTextPositionX = 3;
RemainingTextPositionY = 0.1;
RemainingTextSize = 7;
RemainingTextSpacing = 0.95;
PlatformLength = 65; // Platform length depends on font and its size, no function available to determine automatically, hence needs to be adapted manually
Thickness = 3; // 3 milimeter total height is a good value, you can go for more, do not recommend to make it thinner although possible.

/* Connectors describe small connectors to connect separate parts of text like point on i or hyphen "-".
    numbers in vector below have following meaning:
    [x-position, y-position, length, orientation]
    if all values are zero, no connector is created
    orientation of 0 is vertical, +/-90 is horizonal line
*/
Connectors=[[5.5,4,2,0],[20,4,3,-90],[56.5,3,3,0]];
//Connectors =[[0,0,0,0]] // connect this line in and the above one out in case you do not need any connectors

/*[Hidden]*/
$fn = 128;

createTag();

module hollowcylindersector(height, radius, angle=360, intradius=0, center=false)
{
  translate ([0, 0, center?(-height/2):0])
    rotate (center?(-angle/2):0, [0, 0, 1])
      rotate_extrude(angle = angle, convexity = 2)
        polygon([[intradius, 0],[intradius, height],[radius, height],[radius, 0]]);
}

module createTag()
{
        difference()
        {
            union()
            {
                translate([FirstLetterPositionX, FirstLetterPositionY, 0])
                    linear_extrude(height=Thickness)
                    text(FirstLetter, FirstLetterSize, Font, spacing=1);

                translate([RemainingTextPositionX, RemainingTextPositionY, 0])
                    linear_extrude(height=Thickness)
                    text(RemainingText, RemainingTextSize, Font, spacing=RemainingTextSpacing);
            }
            translate([0,-10,-Thickness]) cube([PlatformLength,10,3*Thickness]);
        }

        translate([0,-2,0])
        cube([PlatformLength,2,Thickness]);

        translate([0,-3.5,0])difference()
        {
            cylinder(h=Thickness, r1=3.5, r2=3.5);
            translate([0,-0.5,-0.5])cylinder(h=Thickness*2, r1=2, r2=2);
            translate([0,-4,0])cube(6);
        }
        translate([0,-4,0]) rotate ([0,0,-90]) hollowcylindersector(Thickness, 3, 74, 2);
        translate([4.77,-5.5,0]) rotate ([0,0,40]) hollowcylindersector(Thickness, 3, 122, 2);

        for (c=Connectors)
            if (c!=[0,0,0,0])
                translate([c[0],c[1],Thickness/3])rotate(c[3])cube([Thickness/3,c[2],Thickness/3]);
}
```


[User]
I'd like to create a parametric double-hung window in OpenSCAD, similar to the one I've seen on Thingiverse, but with some additional features and flexibility. I'm thinking of a design where I can control not just the overall dimensions and frame thicknesses, but also the shape of the window panes themselves and the ability to add optional decorative elements.

Here's a breakdown of what I'm looking for:

**Core Functionality (Similar to the Existing Design):**

*   **Wall Opening Dimensions:** I need parameters for the width and height of the wall opening where the window will be inserted.
*   **Window Depth:** A parameter to control the overall depth of the window.
*   **Frame Construction:**
    *   Parameters for the width and thickness of the boards used to create the window frame.
    *   The frame should consist of a head, jambs, sill, and casings, like the provided example.
*   **Sash Construction:**
    *   Parameters for the width and thickness of the muntins (the frame pieces that hold the panes) in each sash.
    *   A parameter for the depth of the sash frame.
    *   Individual control over the number of rows and columns of panes in *both* the upper and lower sashes, similar to the given code.
    *   A parameter to set the offset/depth of each sash, similar to the `upper_sash_offset` and `lower_sash_offset` variables in the provided code.

**Enhanced Features:**

*   **Pane Shape Options:** Instead of just rectangular panes, I'd like to be able to choose from options like:
    *   **Arched Top Panes:** The ability to specify a radius or arch height for the top row of panes. This should work in both the upper and lower sashes, and the top row of each sash should be able to have arched panes independently.
    *   **Rounded Corners:** A parameter to define the radius of rounded corners for all panes.
    *   **Custom Pane Shape:** If possible, it would be amazing to be able to import an external file (e.g., an SVG file or a .dxf file) to define a custom pane shape. Maybe this could be a boolean that switches this import on, with a file parameter for the external path.
*   **Decorative Elements:**
    *   **Muntin Profiles:** The ability to choose from a couple of different muntin profile shapes (e.g., a simple rectangle, a slight bevel, or a decorative ogee). I'm not sure if this should use a custom 2D file or if it should be defined with parameters for depth and a few angle points.
    *   **Optional Mullions:** Parameters to add a central vertical and/or horizontal mullion in *either* sash, dividing each into multiple sections. These should also be parametrically defined.
    *   **Decorative Sill:** A parameter to control the sill overhang (the distance the sill extends past the wall opening) and the shape of its edge.

**Scaling and Units:**

*   Similar to the original code, I'd like parameters to define a modeling scale and a printing scale. The units for all dimensions should be in the "prototype" units, and be scaled for printing using those parameters.

**Library Dependencies:**

I'm not sure which libraries you'd need for this; I'm guessing that you won't need anything beyond the basic OpenSCAD features, but let me know if I should include a specific library.

Could you generate the necessary OpenSCAD files to accomplish this? I'm not particularly interested in the file organization, though I would like it to be clean and well-commented.

[Assistant]
doublehung_window_thingiverse.scad:
```
/*
OpenSCAD double-hung window
Author: Glenn Butcher
License: CC-BY-4.0

Formatted for the Thingiverse customizer
*/

//Width of the wall opening into which the window will be inserted
opening_width=24;
//Height of the wall opening into which the window will be inserted
opening_height=48;
//Overall depth of the window
window_depth=3;
//Width of the boards used to make the window frame
board_width=3;
//Thickness of the boards used to make the window frame and sashes
board_thickness=1;
//Width of the muntins, the frame pieces that make up the sash
sash_muntin_width=1;
//Depth of the sash frames
sash_depth=1;
//Number of rows of panes in the upper sash
upper_sash_layout_rows=2;
//Number of columns of panes in the upper sash
upper_sash_layout_columns=2;
//Number of rows of panes in the lower sash
lower_sash_layout_rows=2;
//Number of columns of panes in the lower sash
lower_sash_layout_columns=2;
//Use this to change the depth of the upper sash
upper_sash_offset=0;
//Use this to change the depth of the lower sash
lower_sash_offset=0;

//The modeling scale of the .stl file.  Specifies the denominator of the scale, e.g., 1/87 for HO scale, the default.  Assumes the dimensions specified in the previous parameters are prototype, e.g. 1:1.
modeling_scale=87;
//Scales the model for printing.  Default is 25.4, the multiplier to convert decimal inches to millimeters.
printing_scale=25.4;

upper_sash_layout=[upper_sash_layout_rows,upper_sash_layout_columns]*1;
lower_sash_layout=[lower_sash_layout_rows,lower_sash_layout_columns]*1;

//draws a sash with the defined pane layout
module sash(width, height, thickness, depth, panelayout=[2,2]) {
	muntinsh = thickness*2 + thickness*(panelayout[0]-1); //accumulate muntins in height
	muntinsw = thickness*2 + thickness*(panelayout[1]-1); //accumulate muntins in width
	paneheight = (height-muntinsh)/(panelayout[0]);
	panewidth = (width-muntinsw)/(panelayout[1]);
	translate([depth,-width/2,0]) {
		rotate([0,-90,0]) {
			difference() {
				//base sash:
				cube([height+0.001, width+0.001, depth]);

				//subtract panes:
				for (r = [1:1:panelayout[0]]) { //rows
					for (c = [1:1:panelayout[1]]) {  //columns
						translate([thickness*r+paneheight*(r-1),thickness*c+panewidth*(c-1),-depth/2])
							cube([paneheight, panewidth, depth*2]);
					}
				}
			}
		}
	}
}

//draws a board in the x direction:
module board(length, width, thickness) {
		translate([0,-width/2,0]) cube([length+0.001, width+0.001, thickness+0.001]);
}

//draws the window frame using a bunch of board()s, anchored to wall opening width and height:
module windowframe(opening_width, opening_height, depth, board_width, board_thickness) { //, uppersash=[1,2], lowersash=[1,2]) {

	//head:
	translate([opening_height-board_thickness,board_thickness,depth-board_thickness]) //move board to edge of opening_height
		translate([board_width/2,-(opening_width+board_width*2)/2,0]) //put board edge on y axis
			rotate([0,0,90])
				board(opening_width+board_width*2-board_thickness*2, board_width, board_thickness);

	//casings:
	//left:
	translate([0,opening_width/2+board_width/2-board_thickness,depth-board_thickness])
		board(opening_height-board_thickness,board_width,board_thickness);
	//right;
	translate([0,-opening_width/2-board_width/2+board_thickness,depth-board_thickness])
		board(opening_height-board_thickness,board_width,board_thickness);

	//jambs:
	//left:
	translate([0,opening_width/2,(depth-board_thickness)/2])
		rotate([90,0,0])
			board(opening_height-board_thickness,depth-board_thickness,board_thickness);
	//right:
	translate([0,-opening_width/2+board_thickness,(depth-board_thickness)/2])
		rotate([90,0,0])
			board(opening_height-board_thickness,depth-board_thickness,board_thickness);
	//top:
	translate([opening_height-board_thickness,-(opening_width)/2,(depth-board_thickness)/2])
		rotate([90,0,90])
			board(opening_width, depth-board_thickness, board_thickness);

	//sill:
	translate([0,-opening_width/2+board_thickness,depth/2])
		rotate([90,0,90])
			board(opening_width-board_thickness*2, depth, board_thickness);
	translate([0,-(opening_width+board_width*2+board_thickness/2)/2,depth])
		rotate([90,0,90])
			board(opening_width+board_width*2+board_thickness/2, board_thickness*2, board_thickness);
	translate([-board_thickness,-(opening_width+board_width*2-board_thickness*2)/2,depth-board_thickness/2])
		rotate([90,0,90])
			board(opening_width+board_width*2-board_thickness*2, board_thickness, board_thickness);
}

//draws a double-hung window anchored to an opening width and height with the specified sash layout:
module doublehung_window(opening_width, opening_height, depth, board_width, board_thickness, sashthickness, sash_depth, uppersash, lowersash) {
	windowframe(opening_width, opening_height, depth, board_width, board_thickness);
	sh = (opening_height/2)-sashthickness/2;
	translate([board_thickness,0,sash_depth+lower_sash_offset]) rotate([0,90,0]) sash(opening_width-board_thickness*2,sh,sashthickness,sash_depth,uppersash);
	translate([(opening_height/2)-board_thickness/2,0,sash_depth*2+upper_sash_offset]) rotate([0,90,0]) sash(opening_width-board_thickness*2,sh,sashthickness,sash_depth, lowersash);

}

scale(printing_scale)
	scale(1/modeling_scale)
		doublehung_window(opening_width, opening_height, window_depth, board_width, board_thickness, sash_muntin_width, sash_depth, lower_sash_layout, upper_sash_layout );

```


[User]
I'm looking for an OpenSCAD design for a knife block that can hold a variable number of knives in one row. I want to be able to customize the spacing between the knives, the size of the knife slots, and the overall dimensions of the block.

The basic structure is a rectangular block with rectangular cutouts for the knife blades. I have a basic SCAD file I created which has the overall structure and hardcoded for 6 knives with these parameters:

*   `spacing_X` = 15mm (space between knife slots)
*   `spacing_Y` = 15mm (space between the bottom of knife slot and bottom of block)
*   `spacing_Z` = 5mm (space between the bottom of the knife slot and bottom of block)
*   `opening_X` = 3mm (width of knife slot, intended for blade thickness)
*   `opening_Y` = 25mm (depth of knife slot, intended for blade width)
*   `opening_Z` = 150mm (height of knife slot, intended for blade length)

I want the new design to be parametric, so I can easily change these values, and I also want to be able to specify the number of knife slots (e.g., 2, 4, 10, etc). The existing SCAD uses the `difference()` operator to subtract the knife slots from a solid block, which is good and I'd like that to remain the same.

Could you please create a parametric OpenSCAD file for this, keeping the same general structure but adding the parametric control I mentioned? I don't need any extra features like a sloped top or anything complicated for now, just a basic rectangular block.

[Assistant]
Knife_block_6_knives_1_row.scad:
```
spacing_X = 15;
spacing_Y = 15;
spacing_Z = 5;
opening_X = 3; //thickness knife blade (add 2mm extra tolerance)
opening_Y = 25; //width knife blade (add 2mm extra tolerance)
opening_Z = 150; //length knife blade (add 2mm extra tolerance)

difference(){
cube ([spacing_X*7+opening_X*6,spacing_Y*2+opening_Y,opening_Z+spacing_Z]);
translate ([spacing_X,spacing_Y,spacing_Z]) cube ([opening_X,opening_Y,opening_Z]);
translate ([spacing_X*2+opening_X,spacing_Y,spacing_Z]) cube ([opening_X,opening_Y,opening_Z]);
translate ([spacing_X*3+opening_X*2,spacing_Y,spacing_Z]) cube ([opening_X,opening_Y,opening_Z]);
translate ([spacing_X*4+opening_X*3,spacing_Y,spacing_Z]) cube ([opening_X,opening_Y,opening_Z]);
translate ([spacing_X*5+opening_X*4,spacing_Y,spacing_Z]) cube ([opening_X,opening_Y,opening_Z]);
translate ([spacing_X*6+opening_X*5,spacing_Y,spacing_Z]) cube ([opening_X,opening_Y,opening_Z]);
}
```


[User]
I need a parametric OpenSCAD design for a tray that holds cut tape strips for pick and place machines, similar to the PnPStripFeeder.scad file I found. I'd like it to be flexible enough for different tape widths, component depths, and strip lengths, and be able to hold multiple strips in parallel. Basically, I want to generate different size feeders based on a set of parameters.

Here's what I need to be able to customize:

*   **tape\_width**: The width of the SMD tape (8mm, 12mm, 16mm, etc.). This is a critical parameter.
*   **stripLength**: The length of the strip, which will effectively determine how many components it holds. This should also be in millimeters.
*   **numStripsParallel**: How many strips the tray should hold side-by-side.
*   **tapeZDepth**: The depth of the channel that holds the tape. I need to be able to adjust this so the tray can handle different size components (resistors vs. larger capacitors or SOT-23 devices).
*   **feederNameString**: A text string that is printed/embossed onto the bottom of each strip holder for reference. This should be fairly simple text.
*   **channelZ**: The height of the tape's working surface above the base. This influences the base thickness.
*   **thickness**: The wall thickness between strips.
*   **tapeHolesSupportWidth**: The width of the shelf that supports the tape within each strip's channel.
*   **slackness**: A small amount of clearance added to the tape size for ease of use.
*   **topThickness**: The thickness of the top of the strip channel.

I also need the design to include some features:

*   Mounting holes at each end of each strip channel.
*   Small "fillets" (rounded edges) on the top of each strip channel for aesthetics and strength.
*   Small holes through the top of each channel to allow for removing tape and components.
*   Embossed text on the underside of each strip.

I'd like this all to be generated parametrically using OpenSCAD. Also, please make sure the design uses reasonable defaults.

It would be great if you used the BOSL2 library for more advanced features like fillets, but it's not a hard requirement if you can produce similar results without it.

[Assistant]
PnPStripFeeder.scad:
```
// SMD strip feeder cartridge v4.0
// Extensions and generalizations, 2020-2022 by Pat Deegan, https://psychogenic.com
//
// Originally based on SMD strip feeder cartridge,
// Copyright (c) R. Linder
//
// This work is licensed under a Creative Commons Attribution 4.0 International License.
//

/*
 * Settings
 * In most cases, you need only change:
   - tape_width: set to 8 for 8mm strips, 12 for 12mm etc
   - numStripsParallel: how many to have in this set
   - stripLength: how long (number of components to hold), in mm
   - feederNameString: something printed on bottom of strip holders, for reference

 There are other settings you can play with, but those are the most important.

 When you make a change, hit F5 to preview the result.
 */

/* [Core Settings] */

// Width of the SMD tape, in mm (standards are 8, 12, 16, etc)
tape_width = 8; // [8:4:48]

// Strip length (i.e. number of components "long"), in mm
stripLength = 85; // [25:5:240]

// number of strips you want in this cartridge
numStripsParallel = 16; // [1:1:32]

// mm depth for tape.  0 could work for very flat components like resistors,
tapeZDepth = 2.0;// [0:0.1:3.0]
// 0.75 would be ok for e.g. fat 8mm-tape caps, 2.5 works for pretty much everything
// including SOT-23 modules like mosfets and even bigger capacitors, etc

// value embossed on bottom
feederNameString = "8mm tape z2";

/*
 * Additional configurable settings here.
 * Most, but not all, values of interest are variables, though some things are
 * still hard-coded down below...
 */

/* [Env Setup] */

// height of tape of work surface (e.g. 5 or more, 6 works well),
channelZ = 5.5; // [4.4:0.1:16]
// influences thickness of base

// wall thickness, between strips
thickness=2.75; // [1.5:0.25:5]

/* [Structural] */

// size of "shelf" on which tape is supported
tapeHolesSupportWidth = 3.8; // [2.5:0.1:12]

// A small amount of clearance to add to tape size (Eg. 0.2)
slackness = 0.15; // [0.05:0.05:0.5]

// magic facenumber thing
$fn=90;

/* [Hidden] */

// Top thickness
topThickness = 1.2;

module fillet(r, h)
{
	eta = 0.1;
    translate([r / 2, r / 2, 0])
    {
        difference()
        {
            cube([r + eta, r + eta, h], center = true);
            translate([r/2, r/2, 0]) cylinder(r = r, h = h + 1, center = true, $fn=180);
        }
    }
}

module channel (idx=0, clen=80, tapeW=8, slack=0.2)
{
	// Make some slack around the tape
	tapeW = tapeW + slack*2;

	difference ()
	{
        // the basic cube we're sculpting
		cube ([clen, (thickness*2)+tapeW, channelZ+topThickness]);

		ho = channelZ-topThickness-0.855;
        // subtract slot
        translate ([-0.1,thickness,ho-0.15]) cube ([clen+1,tapeW, 1.52]);

        translate ([-0.1,thickness+(tapeHolesSupportWidth-slack)-1.2,ho - tapeZDepth])
           cube ([clen+1,0.8+tapeW-(tapeHolesSupportWidth+(slack*2)), tapeZDepth+0.1]);

        // subtract top
        translate ([-0.1,thickness+1,channelZ-1]) cube ([clen+1,tapeW-2,topThickness+1.5]);

		// Now the holes for tape
		holes = (clen-8) / 4;
		for (n=[0:holes])
		{
			translate ([4+n*4, thickness+1.2,channelZ-1+thickness-thickness*1.2])
               cylinder (d=2.8, h=thickness*2);
		}

		// Holes for mounting
		translate ([5,thickness+1.0+tapeW/2, -1.0])	cylinder (d=3, h=thickness*2);
		translate ([clen-5,thickness+1.0+tapeW/2, -1.0])	cylinder (d=3, h=thickness*2);

        // fillets on top
		translate ([clen/2, thickness+tapeW-1.2, channelZ+topThickness])
          rotate ([0,90,0]) fillet (r=2, h=clen+1);

		translate ([clen/2, thickness+1.2, channelZ+topThickness])
          rotate ([180,90,0]) fillet (r=2, h=clen+1);

        // text
        translate([(stripLength/2 + 34), 2.0+tape_width/2, channelZ-tapeZDepth-2.4])
          rotate([0,0,180])
             linear_extrude(height=0.7) {
                            text(str(feederNameString), size=(tape_width/3),
                            valign="top", halign="left", font=":style=Bold");
                        };

	}
}

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

for(idx=[0:1:(numStripsParallel - 1)]) {
  translate ([0, ((thickness*1.5)+tape_width)*idx, 0]) channel (idx, stripLength, tape_width, slackness);

}

//

```


[User]
I want a cookie cutter that I can customize with a name or other text. It should have a cutting edge that tapers to a fine point, and I want to be able to set all the dimensions like the cutter diameter, depth, thickness, etc. I'd also like the option to create just the name part for pressing into the dough, without the actual cutter.

The design should use parameters to control all of these dimensions, making it easily customizable. The name should be raised from the base of the cutter, and I need to specify the height it's raised by. There should also be a press strip behind the name to support it, and I want to be able to specify the height of the strip, as well as a rim around the outside.

I think I'd like to use the following fonts as options for the text, though I'd also like an "other" option to specify any font that is available on the system - Arial Black, Arial Bold Italic, Berkshire Swash, Courgette, Sriracha, Yellowtail, Tangerine, Parisienne, and Italianno. The "other" option should let me specify the font using the same syntax as the "text" function in OpenSCAD, for example "Nunito Sans:style=Bold Italic"

Also, I'd like to specify the thickness of the cutting edge.

Could you also set the colors of the parts so the rim is orange, the cutter is white, and the name is dark green?

The design should be fully parametric in OpenSCAD and it shouldn't rely on any external libraries, just OpenSCAD's built in functions.

[Assistant]
NameCookieCutter-v1.1.scad:
```
/* Name Cookie Cutter
   by Lyl3

Create a cookie cutter with a specified name (or any other text).

This code is published at:
https://www.thingiverse.com/thing:5715893
and at:
https://www.printables.com/model/340903

licensed under the Creative Commons - Attribution - Share Alike license (CC BY-SA 3.0)

V0.1 - basic functioning code after stripping out most of the code from the Christmas Name Ornament
V0.2 - added sensible parameters for easy customizing
V0.3 - fine tuned the parameters and code
V0.4 - added option to create name only with the press strip and no cutter
V0.5 - modified the cutter part so that it tapers for 2 mm to a fine point
V1.0 - ready for publication
V1.1 - changed default "other" font for name so that the parameter can be specified in the Thingiverse customizer
*/

/* [Name Parameters] */

// Enter the name to put on the ornament.
name = "Lyle";

font_size = 15; // [5:0.1:30]

// Choose from a small selection of fonts that should work well in this application (NOTE: Arial is not available on the Thingiverse customizer and none of them are available on the OpenSCAD customizer unless you have installed them on your computer).
font_name = 5; // [ 0:other, 1:Arial Black, 2:Arial Bold Italic, 3:Berkshire Swash, 4:Courgette, 5:Sriracha, 6:Yellowtail, 7:Tangerine, 8:Parisienne, 9:Italianno]

// If "other" is selected above, you can specify any font available from the Google fonts repository if you are running this on the Thingiverse customizer. See https://fonts.google.com/ for available fonts. If you are running OpenSCAD on your own computer you can see the fonts available in the "Help/Font List" menu item. The syntax is like this example: "Nunito Sans:style=Bold Italic" (without the quotes).
other_font = "Nunito Sans";

/* [Size Parameters] */

// Create a cutter with the name or just a name only. The name only option is for pressing the name into dough that is cut with some other cutter. The cutter and rim parameters below will be ignored if no cutter is being created.
create_cutter = 1;  // [ 0:no, 1:yes]

// Enter the inner diameter of the cookie cutter (mm).
cutter_diameter = 65; // [40:1:100]

// Enter the depth of the cookie cutter edge (mm). This should be at least as thick as the dough that you will be cutting.
cutter_depth = 10; // [6:1:20]

// Enter the thickness of the cutting edge (mm). It should be at least as large as your printer nozzle size.
cutter_thickness = 1.2; // [0.8:0.1:2.0]

// Enter the height of the press strip (mm). This is the part behind the name. It must be large enough to connect to all separate parts of the letters such as the dots in any "i"s and should be large enough to completely cover all letters of the name so that nothing is printed in mid air or else the print will need supports.
press_strip_height = 22; // [5:1:100]

// The name presses into the dough but does not cut right through it. It is offset from the bottom of the cutter and will be this far from the bottom of the cookie when it is cut, so your dough must be at least this thick. Enter the offset distance for the name (mm).
name_offset = 3; // [1:0.1:5]

// Enter the width of the rim around the outside of the cutter (mm).
rim_width = 10; // [5:1:20]

// Enter the depth of the rim around the outside and the press strip behind the name (mm).
rim_depth = 2; // [1:0.1:2]

/* [Hidden] */
fudge = 0.01;
rounding_radius = 0.5;
$fa= $preview ? 3 : 1;
$fs= $preview ? 2 : 1;

// This convoluted way of selecting the font from an array was a requirement introduced by a change
// on the Thingiverse customizer that broke the ability to directly select fonts with a style specified.
// This issue was first noticed 2020-02-26 and probably happened within the two months prior to that date.
fontNames = ["other", "Arial Black:style=Regular", "Arial:style=Bold Italic", "Berkshire Swash:style=Regular", "Courgette:style=Regular", "Sriracha:style=Regular", "Yellowtail:style=Regular", "Tangerine:style=Bold", "Parisienne:style=Regular", "Italianno:style=Regular"];

selectedFont = (font_name==0) ? other_font : fontNames[font_name];

// Set the preview colors
rim_color = "Orange";
cutter_color = "White";
name_color = "DarkGreen";

/* Create the rim part */
if (create_cutter == 1) {
  color(rim_color) difference() {
    minkowski() {
      translate([0,0,rounding_radius]) linear_extrude(max(rim_depth-2*rounding_radius,0.001))  circle(d=cutter_diameter+2*cutter_thickness+rim_width-2*rounding_radius+fudge);
      sphere(rounding_radius,$fn=30);
    }
    translate([0,0,-fudge]) cylinder(h=rim_depth+2*fudge, d=cutter_diameter-fudge);
  }
}
/* Create the press strip part */
color(rim_color) minkowski() {
  intersection() {
    cylinder(h=rim_depth, d=cutter_diameter);
    translate([0,0,rim_depth/2]) cube([cutter_diameter+fudge, press_strip_height, max(rim_depth-2*rounding_radius,0.001)], center=true);
  }
  sphere(rounding_radius,$fn=30);
}
/* Create the cutter part */
if (create_cutter == 1) {
  color(cutter_color) {
    translate ([0,0,rim_depth-fudge])
    rotate_extrude() translate([cutter_diameter/2,0,0]) polygon(points=[[0,0],[cutter_thickness,0],[cutter_thickness,cutter_depth-2],[0,cutter_depth]]);
  }
}

/* Create the name part */
color(name_color) {
  translate ([0,0,rim_depth-fudge])
    linear_extrude(cutter_depth-name_offset) {
    rotate([0,180,0]) text(name,size=font_size,halign="center",valign="center",font=selectedFont);
  }
}

```


[User]
Okay, I'd like to design a parametric snowflake generator in OpenSCAD. I've been making these for a while, but I want to create them directly in OpenSCAD instead of using Inkscape and then importing SVGs. The design is basically a central circle with text radiating outwards from it. I need to be able to customize a number of things like the font, size, text, and how many times the text repeats.

Here's a breakdown of the features I want:

*   **Text:** The main part of the snowflake will be formed by repeating a text string around the center.
    *   I need to be able to set the font for the text (and have it available either through OpenSCAD or from Google Fonts). I also need to be able to set the font size, and how much to space the letters apart.
    *   The text needs to be able to rotate. I'd like to rotate it so that it connects to the text next to it for structural strength. Also, I need to control how many times the string is repeated around the circle and where the text starts in relation to the center.
*   **Center:** The center should have two customizable components.
    *   It should have a small amount of text which will be made of two different text strings stacked on top of each other. Both should have control over the font, size, and x/y offset from center. The amount of vertical spacing between these two text strings should also be adjustable.
    *   It also has a center circle.  The inner and outer diameters of this circle need to be adjustable.
*   **Hanging Hole:** I also need to add a hole at the top for hanging, with an adjustable inner and outer diameter. Its vertical offset from the center should also be adjustable.  The entire snowflake will also need to be able to be rotated after the text is laid out to line up with the hanging hole.
*   **Thickness:** I need to set the thickness of the snowflake.
*  **Number of Segments:** The $fn variable should be controllable.
*  **Libraries:** There aren't any libraries that I'm using but I want to make sure the code is still very efficient and readable.

I think that covers it. I'm okay with a single SCAD file for all of this and using global variables so that I can easily customize it.

[Assistant]
customizable_snowflakes.scad:
```
/* [Font and Text] */
//Font for the flake portion. Use any font available to OpenSCAD (https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Text#Using_Fonts_&_Styles) if you are having issues with it finding the font you want.  If using the online customizer, make sure your font is available at https://fonts.google.com/
flake_font="MrDafoe-Regular";

//Font size for the flake portion.
flake_s=30; //[10:100]

//Font for the center portion.  See above note about fonts.
center_font="MrDafoe-Regular";

//Font size for the center portion
center_s=30; //[10:100]

//Text string to use.  May want to experiment with capitalization.
t="Jaxon";

//Thickness of snowflake in mm
h=4; //[1:0.1:10]

//Letter spacing - how much they are squeezed together.  Most or all the letters should probably touch.
flake_spacing=0.8; //[0:0.01:2]

/* [Layout] */
//Number of times the text sting is rotated about the z axis.  They are evenly distributed around the circle.
num_text=9; //[1:1:20]

//Horizontal offset of the text.  Adjust so that the first letter of the text connects to the inner circle.
offset=46; //[0:100]

//Rotation of each individual text string.  You usually want to rotate until some of the middle/end of the text string contacts some of the text on the next text string over (make it stronger).
rotate_text=-90; //[-360:360]

/* [Hanging Piece] */
//Extra rotatation of all the text. Make sure that there is text at the very top to line up with the hole for hanging.
rotation=-19; //[-360:360]

//Inner diameter in mm of the piece used for hanging.
hole_dia_inner=5; //[0:10]

//Outer diameter in mm of the piece used for hanging.
hole_dia_outer=8; //[0:10]

//Vertical offset for hole - adjust until it connects to the text where you want it to.
hole_y_offset=94; //[0:0.01:200]

/* [Other] */
//Designed by Matthew Redmon.  https://www.printables.com/model/341042/ or https://www.thingiverse.com/thing:5719286/
$fn=100;

translate([0,hole_y_offset,0])
difference(){
cylinder(d=hole_dia_outer,h=h);
translate([0,0,-0.01])
cylinder(d=hole_dia_inner,h=h+0.02);
}

s_center=30; //font size for center text
center_text_top="20"; //top part of the text in the middle of the circle
center_text_top_x_offset=-35;
center_text_bottom="22"; //bottom part of the text in the middle of the circle
center_text_bottom_x_offset=-15;
center_text_bottom_y_offset=-25; //amount the 2 pieces of the center text are separated from each other in the y direction
center_circle_dia_inner=73;
center_circle_dia_outer=80;
center_spacing=0.8;

difference(){
union(){
translate([center_text_top_x_offset,0,0])
t_center(center_text_top);
translate([center_text_bottom_x_offset,center_text_bottom_y_offset,0])
t_center(center_text_bottom);
}
difference(){
    translate([0,0,-0.01])
cylinder(d=center_circle_dia_outer*2,h=h+0.02);
    translate([0,0,-0.01])
cylinder(d=center_circle_dia_outer,h=h+0.02);
}
}

difference(){
    cylinder(d=center_circle_dia_outer,h=h);
    translate([0,0,-0.01])
    cylinder(d=center_circle_dia_inner,h=h+0.02);
}

rotate([0,0,-rotation])
difference(){
for (i=[0:(num_text-1)]){
rotate([0,0,360/num_text*i])
translate([offset,0,0])
t_flake(t);}
translate([0,0,-0.01])
cylinder(d=center_circle_dia_outer,h=h+0.02);
//designed by Matthew Redmon.  https://www.printables.com/model/341042/ or https://www.thingiverse.com/thing:5719286/
}

module t_flake(t, s=flake_s, style = "") {
    rotate([0,0,rotate_text])
    linear_extrude(height = h)
      text(t, size = s, spacing=flake_spacing, font = str(flake_font, style), $fn = 16);
}

module t_center(t, s=center_s, style ="") {
    linear_extrude(height = h)
      text(t, size = s, spacing=center_spacing, font = str(center_font, style), $fn = 16);
}

```


[User]
Hi! I'm looking for some help designing a pegboard box hanger, and I think OpenSCAD would be the perfect tool for it. I've seen some examples online, but I'd like to have something fully customizable.

Basically, I want a hanger that will clip onto a standard pegboard and hold an open-top box, like a storage bin. It needs to be parametric so I can adjust it to fit different pegboards, boxes, and even material thicknesses.

Here's what I'm thinking in terms of the parameters:

**Pegboard Dimensions:**

*   `hole_r`: Radius of the pegboard holes.
*   `hole_depth`: Depth of the pegboard holes.
*   `hole_distance`: Distance between the centers of the pegboard holes.

**Box Dimensions:**

*   `box_wall_h`: Height of the box walls.
*   `box_wall_w`: Width (thickness) of the box walls.

**Box Support Dimensions:**

*   `hook_slot_length`: Length of the vertical slot on the hanger that the box wall slides into.
*   `bed_length`: Length of the horizontal support bed under the box.

**Tuning Ratios (for adjusting fit):**

*   `peg_shaft_ratio`: Ratio of the peg shaft height to the pegboard hole's "square" height (a derived value based on `hole_r`). This would let me tighten or loosen the fit of the pegs.
*   `peg_ball_ratio`: Ratio of the peg "ball" radius to the pegboard hole radius. Again, for fit.
*   `hook_slot_ratio`: Ratio of the hook slot width to the box wall width, for adjusting how snug the box wall fits in.
*   `depth_ratio`: Ratio of the hanger's width to the pegboard hole's "square" width, to adjust how deep the hanger fits into the pegboard.

I'm picturing a design with a vertical bar that sits against the pegboard. This bar has two or more pegs that slot into the holes. Coming off that bar is a horizontal "bed" that supports the bottom of the box. At the top of that bar is a slot (the "hook") that the box's wall slides into.

I'm not too concerned with the number of pegs for now, but two seems like a good place to start for stability.

I'd like the code to be written in a modular way, so I can easily understand and change things later. I'm also assuming I don't need any external libraries, I think all of this should be doable with just the core OpenSCAD language. Could you generate the necessary .scad file(s) for this?

[Assistant]
pegboard_box_hanger.scad:
```
/*
  Customizable Pegboard Box Hanger
  by Mori Kopel, 2022-12-21

  An OpenSCAD standard pegboard variation of
  "Stackable Box holder for IKEA Skadis Pegboard"
  by Martin Henricson, https://www.thingiverse.com/thing:2535294

  Resizable for various open-top boxes, pegboards and materials.
  Defaults are for Harbor Freight Storehouse portable parts
  storage case bins and a 1"x1/4"x1/8" plastic pegboard.

  This is the missing clip between my small parts storage and
  pegboard systems, letting me shift bins from case to wall and
  back as projects require.
*/

// preview[view:north, tilt:bottom diagonal]

/* [pegboard dimensions] */
// hole radius
hole_r = 3.35; // [1:0.01:5]
// hole depth
hole_depth = 4; // [0.1:0.1:20]
// distance between holes
hole_distance = 25.4; // [0.1:0.1:200]

/* [box dimensions] */
// box wall height
box_wall_h = 46.5; // [5:0.01:500]
// box wall width
box_wall_w = 2; // [.2:0.01:5]

/* [box support dimensions] */
// length of vertical support slot
hook_slot_length = 6; // [0.4:0.01:20]
// length of horizontal support bed
bed_length = 8; // [0.4:0.01:20]

/* [tuning ratios] */
// ratio of peg shaft height to hole square height (bigger for tigher fit)
peg_shaft_ratio = 1.0; // [0.5:0.01:2]
// ratio of peg ball radius to hole radius (bigger for tighter fit)
peg_ball_ratio = 1.01;  // [0.5:0.01:2]
// ratio of hook slot width to box wall width (smaller for tighter fit)
hook_slot_ratio = 1.0;  // [0.5:0.01:2]
// ratio of hanger width to hole square width (bigger for tighter fit)
depth_ratio = 0.95; // [0.5:.01:2]

/* [Hidden] */
$fn = 24;

hanger();

module hanger() {
  hole_square_w = hole_r * sqrt(2);
  bar_h = box_wall_h + hook_slot_length / 2;
  bar_w = hole_square_w;

  linear_extrude(hole_square_w * depth_ratio)
    union() { bar(); bed(); hook(); pegs(); }

  module bar()    // vertical body of hanger
    square([bar_h, bar_w]);

  module bed() {  // horizontal box support bed
    bed_r = (bed_length + bar_w) / 2;
    difference() {
      translate([0, bar_w - bed_r]) circle(bed_r);
      translate([0, -bed_length]) square(bed_length);
    }
  }

  module hook() { // vertical box support slot
    r = hook_slot_length;
    gap_w = box_wall_w * hook_slot_ratio;
    translate([box_wall_h + hole_square_w * 0.5, bar_w - r])
      difference() {
        circle(r);
        translate([-r, r - bar_w - gap_w])
          square([r,gap_w]);
      }
  }

  module pegs() { // connect bar to pegboard
    translate([bar_h - hole_square_w, bar_w])
      for(pos = [0 : hole_distance : bar_h - hole_square_w])
        translate([-pos, 0]) peg();

    module peg() {
      shaft_w = hole_square_w * peg_shaft_ratio;
      shaft_h = hole_depth;

      union() { shaft(); ball(); }

      module shaft() square([shaft_w, shaft_h]);

      module ball() {
        circle_r = hole_r * peg_ball_ratio;
        circle_depth = shaft_h + hole_r * 0.5;

        translate([shaft_w / 2, circle_depth])
          difference() { circle(circle_r); slot(); }

        module slot() {
          slot_w = circle_r * 0.4;
          slot_h = circle_r * 1.5;
          translate([-slot_w / 2,  circle_r - slot_h])
            square([slot_w, slot_h]);
        }
      }
    }
  }
}

```


[User]
Hey, I'm looking to create a parametric owl dish, and I need your help with the OpenSCAD code. I have some specific requirements.

Basically, I want an owl-shaped container with a hollowed-out interior. The design should have a base that's a sort of cylinder with the owl's body carved into it. I need to be able to adjust the cut height, the diameter of the opening in the base, and a few other things. Specifically, there should be a circular opening at the top of the cylindrical base, and a sort of lip extending around the edge of the opening to provide a bit of an overhang. The top of the owl, the "head" needs to be separate, and should fit snugly into the top opening of the base, creating a lid.

Here are the parameters I need to be able to control:

*   **`cut_height`**: This is how tall the cylindrical base should be.
*   **`hole_diameter`**: The diameter of the opening/hole at the top of the base and the diameter of the plug on the "head".
*  **`lip_thickness`**: How much the lip around the hole extends outward from the hole edge.
*   **`lip_height`**: The height of the lip.
*  **`head_height`**: The overall height of the owl head / lid.
*   **`owl_scale`**: A general scale factor for the whole owl design - this should affect both the base and head.
*   **`base_diameter`**: The diameter of the cylindrical base cylinder.
*   **`base_offset`**: An offset in the X direction to shift the base.
* **`head_offset`**: An offset in the X direction to shift the head
*   **`owl_stl_file`**: Path to an STL file of a front-facing owl.

I'd like two parts generated: the main body (base) and the head. I'll be 3D printing this, so it needs to be manifold.

I'm hoping you can generate the parametric OpenSCAD code for both the base and the head, taking all of this into account. I don't need any comments in the code or any error checking. Make sure the code is readable and well-formatted, though.

[Assistant]
owl_dish.scad:
```
/*
https://www.thingiverse.com/thing:5739139
Made into a dish by Nathaniel J Stenzel on December 22/2022 based on "owl facing front" by BrOncO on February 22, 2015. https://www.thingiverse.com/thing:693371
That was based on "Owl Statue Facing Left"
by cushwa on February 28, 2012. https://www.thingiverse.com/thing:18271
"Owl Statue Facing Left" did not seem to want to be manipulated by OpenSCAD.
*/

cut_height=101;
hole_diameter=30;
top=false;
bottom=true;
side=[100,0,0];
ontop=[0,0,cut_height];
above=[0,0,cut_height+10];
head_position=side;
debug=false;
debug2=false;
$fn=90;
module owl()translate([-390,0,0])import("ofw_face_front.STL",convexity=3);

if(bottom){
    difference(){
        intersection(){
            owl();
            cylinder(d=120,h=cut_height);
            if(debug)cube([100,100,150]);//helps with figuring the internal shape
            if(debug2)translate([0,0,cut_height-2])cylinder(d=100,h=30);
        }
        hull(){
            translate([0,0,cut_height-10])cylinder(d=hole_diameter,h=10.001);
            translate([5,0,cut_height-40])scale([2,1,1])cylinder(d=hole_diameter,h=25.001);
            translate([5,11.5,25])sphere(d=25);
        }
    }
    //lip
    if(1)color("red")translate([0,0,cut_height])intersection(){
        difference(){
            cylinder(d1=hole_diameter+4,d2=hole_diameter+3,h=5);
            cylinder(d=hole_diameter,h=20,center=true);
        }
        if(debug)cube([100,100,150]);
    }
}
if(top)translate(head_position)difference(){
    intersection(){
        translate([0,0,-cut_height])owl();
        cylinder(d=150,h=cut_height);
        if(debug)cube([100,100,150]);
    }
    cylinder(d=hole_diameter+4.5,h=6*2,center=true);
    translate([0,0,6])cylinder(d1=hole_diameter+4.5,d2=20,h=20);
    if(debug2)translate([0,0,10])cylinder(d=100,h=50);
}
```


[User]
I need a design for an enclosure for an ESP32 microcontroller, specifically for use with WLED. I'm planning to use two different types of ESP32 boards, so the design needs to accommodate both.

The first board is the Teyleten Robot ESP32-S3-DevKitC-1, which I want to slot into the enclosure. The second is the ESP-WROOM-32 ESP32 ESP-32S, which needs to be screw-mounted. Both of these have standard USB connectors, so clearance is needed there.

Here's a rundown of the main design parameters, focusing on the overall box and how the boards will mount inside. I'm also going to include some measurements of the box features for clarity. I would also like the scad file to include parameters for each dimension so it can be easily changed.
*   **Overall Box:** The box should be rectangular. Let's aim for a box width (box_w) of 100mm and a length (box_l) equal to the board length (board_l) which I will set to 60mm for now, but it needs to be a parameter. The box height (box_h) should be the width of the board (board_w) plus the power wire diameter (pwr_d) plus 1mm. So, assuming board_w=28 and pwr_d=4, that would make box_h=33mm. All of these should be parameters. The box will have a wall thickness (box_t) of 1.2mm and a lid thickness (lid_t) of 1.2mm, and these should also be parameters.

*   **ESP32-S3 Mounting:** This board should slot into the enclosure. The ESP32-S3 requires a vertical divider and a horizontal shelf for support. The divider will be at a distance of div_1=50mm from the right side of the box and will extend the full height of the box. The shelf will be right next to the divider and extend 1mm more, and it will be pwr_d+1 in height. There needs to be a small tab extending from the vertical divider that the board will sit on, and it will have a width and length (board_tab) of 5mm and be angled at 45 degrees. These should all be parameters.

*   **ESP-WROOM-32 Mounting:** This board needs screw mounts in the lid. I need four mounting points with the following parameters: the mount position (board2_mounts) is 10mm from the left, and 47mm width and length, and the mount inner diameter (board2_mount_id) of 1.9mm and an outer diameter (board2_mount_od) of 3.5mm and height (board2_mount_h) of 3mm.

*   **Other Features:**
    *   There needs to be an antenna slot with space from the vertical divider (antenna_slot_space) of 3.5mm, with a thickness (antenna_slot_t) of 1mm, and the antenna slot should be shortened (antenna_slot_shorten) 5mm from the edge, and should also be a parameter.
    *   There need to be holes for power wires, with a diameter (pwr_d) of 4mm, and signal wires, with a diameter (sig_d) of 4mm. There will be two for power and one for signals.
    *   There needs to be a hole for a power jack, with a diameter (jack_d) of 8mm.
    *   There should also be some screw mounts on the outer sides of the box and holes in the top for screwing the lid into the box. The screw holes should have an expanded part at the top, with a diameter (scrtop_expand_d) of 2.9mm, and depth (scrtop_expand_l) of 10mm.
    *   There should be two button holes in the lid. The locations are described by board2_buttons: [14, -23.5] and [29,-23.5] from center. The diameter (board2_button_d) of the button holes will be 3mm. These should also be parameters.

I am thinking this design could use the hull() function to join all the outer screw tabs to give it more strength. It's also important that the design is parametric, so I can easily adjust the dimensions later.

I would also like to use the following libraries:
*   BOSL2
*   MCAD

Could you provide the OpenSCAD code for this enclosure?

[Assistant]
esp32_box_for_leds.scad:
```
$fn=32;

tol=0.2;

pwr_d=4;
sig_d=4;

div_1=50;
board_t=5.2;
antenna_slot_space=3.5;
antenna_slot_t=1;
antenna_slot_shorten=5;
board_w=28;
board_l=60;

box_w=100;
box_l=board_l;
box_h=board_w+pwr_d+1;
box_t=1.2;
lid_t=1.2;
board_tab=5;

board2_mounts=[10-box_w/2,-47/2,23,47];
board2_mount_id=1.9;
board2_mount_od=board2_mount_id+1.6;
board2_mount_h=3;

board2_buttons=[[10+4-box_w/2,1.5-47/2],[10+19-box_w/2,1.5-47/2]];
board2_button_d=3;

screw_d=2.9;

jack_d=8;

strip_hole_pos=[-(pwr_d+sig_d)/2-2,0,(pwr_d+sig_d)/2+2];

strip_holes=[pwr_d,sig_d,pwr_d];

scrtop_expand_d=2.9;
scrtop_expand_l=10;

//lid and box
//box();
rotate([180,0,0])lid();

module box()
{
    union()
    {
        difference()
        {
            //outer
            translate([0,0,-box_h/2-box_t/2])cube([box_w+2*box_t,box_l+2*box_t,box_h+box_t],center=true);
            //inner
            difference()
            {
            translate([0,0,-(box_h-1)/2])cube([box_w,box_l,box_h+1],center=true);
                //divider
                translate([box_w/2-div_1-1,-box_l/2-1,-box_h])cube([1,box_l+2,box_h+2]);
                //shelf
                translate([box_w/2-div_1-board_t-1,-box_l/2-1,-box_h])cube([board_t+1,box_l+2,pwr_d+1]);
                //board tab
                translate([box_w/2-div_1-1-board_t-board_tab/2,-box_l/2,-board_w/2])rotate([45,0,0])cube([board_tab,board_tab,board_tab],center=true);
            }
            //power wires
            translate([box_w/2-div_1+1,-pwr_d,pwr_d/2-box_h])rotate([0,-90,0])cylinder(d=pwr_d,h=board_t+1+2);
            translate([box_w/2-div_1+1,pwr_d,pwr_d/2-box_h])rotate([0,-90,0])cylinder(d=pwr_d,h=board_t+1+2);
            //power jack
            translate([box_w/2-1,0,-box_h/2])rotate([0,90,0])cylinder(d=jack_d+tol*2,h=box_t+2,$fn=32);
            //wire holes
          for(i=[0:1:2])translate([1-box_w/2,strip_hole_pos[i],-box_h/2])rotate([0,-90,0])cylinder(d=strip_holes[i],h=box_t+2);
            //antenna slot
          translate([box_w/2-div_1-1-antenna_slot_space,box_l/2-1,-board_w+antenna_slot_shorten])cube([antenna_slot_t,box_t+2,board_w+1-antenna_slot_shorten]);
        }
        difference()
        {
            box_mounts(scrtop_expand_l);
            translate([0,0,-scrtop_expand_l])box_scrtop_expands(scrtop_expand_d,scrtop_expand_l+1);
        }
    }
}

module board2_mount()
{
    rotate([180,0,0])difference()
    {
        cylinder(d=board2_mount_od,h=board2_mount_h+lid_t);
        translate([0,0,-1])cylinder(d=board2_mount_id,h=board2_mount_h+lid_t+2);
    }
}

module box_mounts(sl)
{
    pos=[[-(box_w/2+box_t),-(box_l/2+box_t)],[(box_w/2+box_t),-(box_l/2+box_t)],[-(box_w/2+box_t),(box_l/2+box_t)],[(box_w/2+box_t),(box_l/2+box_t)]];

    rots=[0,90,-90,180];
    for(i=[0:3])translate([pos[i][0],pos[i][1],-scrtop_expand_l])rotate([0,0,rots[i]])hull()
    {
        cube([scrtop_expand_d*2+2*box_t,scrtop_expand_d*2+2*box_t,scrtop_expand_l]);
        translate([0,0,-(scrtop_expand_d*2+box_t)*1.5])cube([box_t,box_t,scrtop_expand_l+(scrtop_expand_d*2+box_t)*1.5]);
    }
}
module box_scrtop_expands(hole,depth)
{
    pos=[[-(box_w/2-scrtop_expand_d),-(box_l/2-scrtop_expand_d)],[(box_w/2-scrtop_expand_d),-(box_l/2-scrtop_expand_d)],[-(box_w/2-scrtop_expand_d),(box_l/2-scrtop_expand_d)],[(box_w/2-scrtop_expand_d),(box_l/2-scrtop_expand_d)]];

    for(i=[0:3])translate([pos[i][0],pos[i][1],0])cylinder(d=hole,h=depth,$fn=32);
}

module lid()
{
    difference()
    {
        union()
        {
            difference()
            {
                translate([0,0,lid_t/2])cube([box_w+2*box_t,box_l+2*box_t,lid_t],center=true);
                translate([0,0,-1])box_scrtop_expands(scrtop_expand_d+2*tol,lid_t+2);
            }
            //mounts
            translate([board2_mounts[0],board2_mounts[1],0])
            {
                board2_mount();
                translate([board2_mounts[2],0,0])board2_mount();
                translate([0,board2_mounts[3],0])board2_mount();
                translate([board2_mounts[2],board2_mounts[3],0])board2_mount();
            }
        }
        //button holes
        for(i=[0:1])translate([board2_buttons[i][0],board2_buttons[i][1],-1])cylinder(d=board2_button_d,h=lid_t+2);

    }
}
```


[User]
I'd like to design a parametric tool for creating disc-bound covers, calendar hangers, and bookmarks. I have a basic idea of the core geometry, and I'd like you to flesh it out with OpenSCAD.

The core of the design is a rectangle with a series of half-circle punches along one edge. The rectangle's dimensions should be fully parametric, with variables for width and height. The punches should be equally spaced, with the spacing also parameterized. The punch geometry should be a combination of a circle and a rectangle that intersect. There should be an offset parameter for the first punch that lets me move the punches further from the edge of the rectangle. Finally, the whole thing should have a thickness parameter for extruding into a 3D shape.

Here are the details for each of the three designs I need. I will need all three designs in one file:

1. **Cover:** The cover should be a simple rectangle with a row of punches on one of the longer edges. This design is mostly meant for book covers, but I might use it for other things too.

2. **Calendar Hanger:** The calendar hanger should be another rectangle with a row of punches, similar to the cover. The main difference is that I want to be able to offset the punches a bit more so it hangs nicely.

3. **Bookmark:** The bookmark should be designed to be small and have a single punch. It will need a tab at the top. I'd like to control the length of the tab and the height of the bookmark.

So to summarize, I need a parametric OpenSCAD file that can generate these three disc-bound accessories. It should have variables for:

*   `width` (of cover/hanger/bookmark)
*   `height` (of cover/hanger/bookmark)
*   `punch_spacing`
*   `punch_top_offset`
*   `thickness`
*   `bookmark_tab_length`
*   `bookmark_height`
* The number of punches to create

The core punch geometry should be constructed so that it has both the half-circle and the short rectangle.

I need to be able to generate each part separately, so think about how to structure the code such that I can choose between generating a `cover`, `hanger`, or `bookmark` and the code will only output that one part.

[Assistant]
parametric_circa_cover.scad:
```
// by tinaw 2016-06
// modified by oboer 2023

// Width of the cover in mm
$width = 152.4;
// Height of the cover in mm
$height = 215.9;
// Punch spacing in mm (you should never need to change this)
$punch_spacing = 25;
// Offset for top punch, in mm
$punch_top_offset = 17;
// Thickness of the cover, in mm
$thickness = 0.4;

module stencil() {
    difference() {

    //STENCIL
    stencil_width = $width; // stencil_height = height of cover in mm
    stencil_height = $height; // stencil_height = height of cover in mm

    square(size = [stencil_width, stencil_height], center = false);

    }
}

module punch(){
    w = 3.5/2;
    union(){
        intersection(){
            translate([4,4,0]){
                circle(r=4,$fn=100);
            }

            polygon([[-1,4],[-1,8],[8,8],[8,4]]);
        }

        polygon([[4-w,0],[4-w,4],[4+w,4],[4+w,0]]);
    }
}

module punches(offset,count){
	spacing = $punch_spacing;
	c = count;
	o = offset;

	for ( punches = [ 1 : c ] ) {
	 	translate ( [ o + spacing * (punches-1), 0, -1 ] ) {
    	punch();
  		}
	}
}

difference() {

  linear_extrude(height = $thickness, center = true, convexity = 10, twist = 0) stencil();

  linear_extrude(height = 0.5, center = true, convexity = 10, twist = 0) rotate (270) mirror([1,0,0] )  punches($punch_top_offset, 10); // comment this for no circa holes

 }
```


[User]
I need a custom screen generator for OpenSCAD. I've seen a design on Thingiverse that I like, but it has some problems with the mesh. I'd like to start from scratch so that I understand everything going on. I'd like a design that can generate a custom screen to fill a hole of various shapes.

Here's what I need:

*   **Hole Shape:** The hole can be a triangle, square, pentagon, hexagon, octagon, a rough circle, or a smooth circle. I'd like to specify the number of sides for the polygon shape, with a large number of sides representing the smooth circle. Let's say 3 for triangle, 4 for square, 5 for pentagon, 6 for hexagon, 8 for octagon, and 128 for a smooth circle.
*   **Hole Diameter:** I'll need to specify the diameter of a circle that connects all the points of the hole shape.
*   **Hole Depth:** I need to specify how deep the hole is.
*   **Frame Thickness:** There needs to be a frame around the screen, and I need to specify its thickness.
*   **Border Size:** If the screen is flush with the surface, I need to specify the size of the border around it.
*   **Mesh Spacing:** I need to control the spacing between the mesh threads.
*   **Mesh Height:** The thickness of the screen itself needs to be adjustable.
*   **Screen Indentation:** I need to choose if the screen is flush with the surface or recessed into the hole.
*   **Slicer Settings:** I want to be able to set the printer's layer height, shell size, and extrusion width. These values will be used when creating the mesh, as the threads should be multiples of extrusion width, and screen thickness should be a multiple of layer height.
*   **Nubs:** For circular holes (where `smooth` is a large number like 128), I want some small nubs on the sides, that should be oriented every 90 degrees. These should be small cubes, placed halfway through the depth of the hole.
*   **Mesh Intersection:** The mesh should be a standard grid pattern where the lines actually intersect at a single point. I had problems with the lines not intersecting with the design I found online.

I'm okay if it all goes into a single .scad file. Please make it fully parametric based on the specifications above. I would like all values to be modifiable from the customizer. I'm not using any specific libraries at the moment, so please write the code from scratch, as if this is the only file.

[Assistant]
CustomScreenV2.scad:
```
// Custom Screen to fill a hole (c) 2013 David Smith
// licensed under the Creative Commons - GNU GPL license.
// http://www.thingiverse.com/thing:112117

/* [Hole] */

// Hole Shape
shape= 128; // [ 3:Triangle, 4:Square, 5:Pentagon, 6:Hexagon, 8:Octagon, 16:Rough Circle, 128:Smooth Circle ]

// Diameter of a circle connecting all the points definiting your hole's shape (mm).
diameter = 52;

// Hole depth (mm)
depth = 10 ;

// Width of the screen's frame (mm).
frame_thickness = 1.2;

// Size of the border (mm). Only 'flush' screens have borders.
border_size = 2.4;

/* [Screen] */

// Spacing between mesh threads (mm).
mesh_space=8;

// Thickness of the screen (mm). It should be a multiple of your slicer's layer height for best results.
mesh_height=2.5;

// Screen is flush to the surface or recessed.
indention = 0; // [0:Recessed, 1:Flush]

/* [Slicer] */

// The thickness of your slices (mm). Screen threads are a multiple of this for their height.
printer_layer_height = 0.2;

// The shell or skin size of your slicer (mm) .
printer_skin_size =    0.6;

// The width of your extruded filament (mm). Screen threads are a multiple of this for their width.
printer_extrusion_width = 1.2;

/* [Hidden] */

smooth = shape;

custom_shape_screen();

module custom_shape_screen() {
union() {
	difference() {
		union() {
			cylinder(h=depth, r=diameter/2, $fn=smooth);

			if (indention == 1)
				// Brim if screen is flush and at the bottom
				cylinder(h=frame_thickness, r=(border_size + diameter/2), $fn=smooth);
			else
				// OR add a small brim on the bottom side (that prints on top)
				translate([0,0,depth])
				cylinder(h=printer_skin_size, r=(printer_extrusion_width + diameter/2), $fn=smooth);
		}

		translate([0,0,-1])
		cylinder(h=depth+3, r=(diameter/2)-frame_thickness, $fn=smooth);
	}

	meshscreen_shape(h=mesh_height,
				mesh_w=printer_extrusion_width,
				mesh_space=mesh_space,
				width=diameter,
				layer_h=printer_layer_height);

	// Make little nubs on the sides to tighten the fit a little (but only for circles).
	if (smooth > 8)
	for (i = [0:3]) {
		rotate(90*i,[0,0,1])
		translate([(diameter/2),0,depth/2])
		cube(size=[1,1,depth],center=true);
	}
}
}

module meshscreen_shape(h=2,mesh_w=1,mesh_space=2,width=60,layer_h){
	intersection(){
		cylinder(r=width/2,h,$fn=smooth);
		mesh_raw(h=h,mesh_w=mesh_w,mesh_space=mesh_space,width=width,layer_height=layer_h);
	}
	difference(){
		cylinder(r=width/2,h, $fn=smooth);
		translate([0,0,-h*0.05]) cylinder(r=width/2-0,h=h*1.1, $fn=smooth);
	}
}

module mesh_raw(h=2,mesh_w=1,mesh_space=2,width=50,layer_height){
	for ( j = [0 :(mesh_w+mesh_space): width] )
	{
	   	translate([0,0,-0.0])translate([-width/2+j, 0, h/4])cube([mesh_w,width,h/2-0*layer_height/10],center=true);
		translate([0,0,0*h/2])translate([0, -width/2+j, h/4])cube([width,mesh_w,h/2],center=true);
	}
}
```


[User]
Hey! I'm looking to create a custom spool design for short lengths of 3D printer filament, and I'd like to use OpenSCAD to make it parametric. I'm thinking of a design that allows for easy welding or permanent attachment to other objects, and also could be used as a detachable part.

Here are the basic parameters I'd like to control:

**Overall Spool Dimensions:**
*   `od`: Outer diameter of the spool.
*   `oh`: Outer height of the spool.
*   `id`: Inner diameter of the filament window (the space where the filament sits).

**Outer Angle Cut Features (for the top and bottom edges of the spool):**
*   `odaw`: Width of the angled cut.
*   `odah`: Height of the angled cut.
*  `odafn`: Number of facets for angled cylinder.

**Spindle Details (the center part of the spool):**
*   `sph`: Height of the spindle.
*   `spd`: Diameter of the spindle.
*  `spdf`: Reinforcement conus length

**Spool Wall Thicknesses:**
*   `sbrd`: Thickness of the border around the spindle.
*   `obrd`: Thickness of the outer wall.
*   `tbbrd`: Thickness of the top and bottom walls.

**Lid Stacking Feature:**
*   `stkh`: Height of the stacking feature (for stacking spools on top of each other).
*   `stksp`: Space for 3D pen welding (gap between stacked spools).

**Filament Stopper Holes (to prevent filament from unwinding):**
*   `fw`: Diameter of the filament stopper holes (0 to disable).
*   `fwr`: Rotation angle of the stopper holes.
*   `fwn`: Number of stopper holes.
*   `fwa`: Angle of the stopper holes relative to the radius
*   `fwm`: Margin for the stopper holes

**Top Holes:**
*   `thd`: Diameter of the top holes (0 to disable).
*   `thr`: Rotation angle of the top holes.
*   `thn`: Number of top holes.
*   `thm`: Margin for the top holes.
*   `tho`: Oval coefficient for the top holes (1=circle).

**Outer Angle Cut Holes:**
*  `odad`: Diameter of the outer angle cut holes (0 to disable).
*   `odar`: Rotation angle of the outer angle cut holes.
*   `odan`: Number of outer angle cut holes.
*   `odao`: Oval coefficient for the outer angle cut holes (1=circle).
*   `odas`: Square coefficient (0=disable, creates a square cut between pair holes).
*  `odam`: Margin of the outer angle cut holes

**Side Holes:**
*   `shd`: Diameter of the side holes (0 to disable).
*   `shr`: Rotation angle of the side holes.
*   `shn`: Number of side holes.
*  `shdm`: Margin of the side holes
*  `shdo`: Oval coeff for side holes

**Bottom Middle Holes:**
*   `bhmd`: Diameter of the bottom middle holes (0 to disable).
*  `bhmr`: Rotation angle of the bottom middle holes.
*  `bhmn`: Number of bottom middle holes
*  `bhmm`: Margin of the bottom middle holes
*   `bhmo`: Oval coefficient for the bottom middle holes (1=circle).

**Bottom Outer Holes:**
*   `bhod`: Diameter of the bottom outer holes (0 to disable).
*  `bhor`: Rotation angle of the bottom outer holes.
*   `bhon`: Number of bottom outer holes.
*   `bhom`: Margin for the bottom outer holes.
*   `bhoo`: Oval coefficient for the bottom outer holes (1=circle).

**Bottom Inner Holes:**
*   `bhid`: Diameter of the bottom inner holes (0 to disable).
*   `bhir`: Rotation angle of the bottom inner holes.
*   `bhin`: Number of bottom inner holes.
*  `bhim`: Margin of the bottom inner holes
*   `bhio`: Oval coefficient for the bottom inner holes (1=circle).

**Spindle Holes:**
*   `sphd`: Diameter of the spindle holes (0 to disable).
*   `sphn`: Number of spindle holes.
*   `sphm`: Margin of the spindle holes.
*  `spho`: Oval coeff for the spindel holes

I want to be able to control the shape and placement of these holes parametrically for different spool configurations. Additionally, I'd like a stacking feature so that spools can be easily placed on top of each other, and a small gap or space to allow for welding with a 3D pen.

I think I will want to be able to switch between profiles which change several parameters at once to achieve different looks, but let's start with the most parametric version.

Can you generate the necessary SCAD files for this?  I'm not using any specific library, so you don't need to worry about any libraries.  Also, include a short description on how you structure the code and why, please!

[Assistant]
3dpenspool.scad:
```
/* [Hidden] */
// epsilon for floating point correction
e=0.01;
/* [Quality] */
// cylinder generation accuracy
fn=100;
// outer angle cut cylinder accuracy
odafn=100;
// spindel reinforce cylinder accuracy
spfn=70;
/* [Spool size] */
// outer diameter
od=70;
// outer height
oh=26;
// inner diameter of filament window
id=38;
/* [Outer angle cut] */
// width
odaw=4;
// height
odah=5;
/* [Spool spindel] */
// height
sph=20;
// diameter
spd=20;
// reinforcement conus
spdf=2.5;
/* [Spool walls] */
// spindel border
sbrd=0.8;
// outer wall
obrd=1.4;
// top and bottom
tbbrd=0.96;
/* [Lid stacking] */
// height
stkh=1;
// space for 3d pen welding
stksp=1;
/* [Filament stopper holes] */
// diameter 0=disable
fw=3;
// rotate angle
fwr=0;
// count
fwn=6;
// angle
fwa=10;
// margin
fwm=0.6;
/* [Top holes] */
// diameter 0=disable
thd=0;
// rotate angle
thr=0;
// count
thn=6;
// margin
thm=0;
// oval coeff
tho=1;
/* [Outer angle cut holes] */
// diameter 0=disable
odad=0;
// rotate angle
odar=0;
// count
odan=18;
// oval coeff
odao=0.8;
// square coeff 0=disable (create pair hole with square cut between)
odas=0;
// margin
odam=-0.25;
/* [Side holes] */
// diameter 0=disable
shd=0;
// rotate angle
shr=0;
// count
shn=18;
// margin
shdm=0;
// oval coeff
shdo=0.8;
/* [Bottom middle holes] */
// diameter 0=disable
bhmd=0;
// rotate angle
bhmr=0;
// count
bhmn=6;
// margin
bhmm=0;
// oval coeff
bhmo=1;
/* [Bottom outer holes] */
// diameter 0=disable
bhod=0;
// rotate angle
bhor=0;
// count
bhon=6;
// margin
bhom=0;
// oval coeff
bhoo=1;
/* [Bottom inner holes] */
// diameter 0=disable
bhid=0;
// rotate angle
bhir=0;
// count
bhin=6;
// margin
bhim=0;
// oval coeff
bhio=1;
/* [Spindel holes] */
// diameter 0=disable
sphd=0;
// count
sphn=6;
// margin
sphm=0;
// oval coeff
spho=1;

// profiles below activated one at a time
// !this will generate warning of variable overwrite

//// !profile: plenty holes
//// top holes
//thd=24;     // diameter
//tho=0.32;   // oval coeff
//// outer angle cut holes
//odad=4.5;   // diameter
//odas=1.3;   // square coeff
//odafn=18;   // outer angle cylinder accuracy
//// side holes
//shd=12;     // diameter
//shdm=-0.5;  // margin
//// bottom middle holes
//bhmd=15;    // diameter
//bhmo=1.2;   // oval coeff
//// bottom outer holes
//bhod=5;     // diameter
//bhom=1;     // margin
//bhoo=0.8;   // oval coeff
//spfn=12;    // outer angle cylinder accuracy
//// bottom inner holes
//bhid=6;     // diameter
//bhir=0;     // rotate angle
//bhio=0.8;   // oval coeff

//// !profile: medium holes
//// top holes
//thd=7;      // diameter
//// outer angle cut holes
//odad=4.5;   // diameter
//odar=5;     // rotate angle
//// side holes
//shd=9;      // diameter
//shdm=0;     // margin
//shdo=0.7;   // oval coeff
//// bottom middle holes
//bhmd=10;    // diameter
//bhmr=10;    // rotate angle

//// !profile: medium holes more view
//// top holes
//thd=10;     // diameter
//tho=0.667;  //oval coeff
//// outer angle cut holes
//odad=4.5;   // diameter
//odan=27;    // count
//odar=5;     // rotate angle
//// side holes
//shd=9;      // diameter
//shdm=0;     // margin
//shdo=0.7;   // oval coeff
//// bottom middle holes
//bhmd=10;    // diameter
//bhmo=1.5;   // oval coeff
//bhmr=10;    // rotate angle

//// !profile: few holes
//// top holes
//thd=7;      // diameter 0=disable
//// side holes
//shd=7;      // diameter 0=disable
//shr=5;      // rotate angle
//shn=12;     // count
//// bottom middle holes
//bhmd=7;     // diameter 0=disable

//// !profile: few holes more view
//// top holes
//thd=10;     // diameter
//tho=0.667;  //oval coeff
//// side holes
//shd=12;     // diameter
//shr=5;      // rotate angle
//shn=12;     // count
//// bottom middle holes
//bhmd=10;    // diameter
//bhmo=1.5;   // oval coeff

ch=oh-odah*2;
difference() {
    union() {
        difference() {
            union() {
                rotate([0,0,10]) translate([0,0,-odah/2-ch/2]) cylinder(h=odah,d1=od-2*odaw,d2=od,center=true,$fn=odafn);
                cylinder(ch+e,d=od,center=true,$fn=fn);
            };
            rotate([0,0,10]) translate([0,0,-(odah-tbbrd)/2-ch/2]) cylinder(h=odah-tbbrd+e,d1=od-2*odaw-obrd*2,d2=od-obrd*2,center=true,$fn=odafn);
            translate([0,0,e/2]) cylinder(ch+e,d=od-obrd*2,center=true,$fn=fn);
            if (shd>0) for (s=[0:360/shn:359])
                rotate([0,0,s+shr+10]) translate([0,od/2-tbbrd,shdm]) rotate([90,0,0]) scale([shdo,1,1]) cylinder(h=tbbrd*2+e,d=shd,center=true,$fn=fn*0.4);
            if (odad>0) for (s=[0:360/odan:359])
                rotate([0,0,s+odar+15]) translate([0,od/2-odaw/2,-ch/2-odah/2+odam]) rotate([90,0,0]) scale([odao,1,1]) cylinder(h=odaw+e,d=odad,center=true,$fn=fn*0.3);
            if (odas>0) {
                if (odad>0) for (s=[0:360/odan:359])
                    rotate([0,0,s+odar+5]) translate([0,od/2-odaw/2,-ch/2-odah/2+odam]) rotate([90,0,0]) scale([odao,1,1]) cylinder(h=odaw+e,d=odad,center=true,$fn=fn*0.3);
                for (s=[0:360/odan:359])
                    rotate([0,0,s+10]) translate([0,od/2-odaw/2,-ch/2-odah/2+odam]) rotate([90,0,0]) cube([odad*odas,odad,odaw+e],center=true);
            };
        };
        difference() {
            union() {
                translate([0,0,-(oh-sph)/2]) cylinder(sph,d=spd+2*sbrd, center=true);
                translate([0,0,-(oh-spdf)/2]) rotate([0,0,15]) cylinder(spdf,d2=spd+2*sbrd,d1=spd+2*sbrd+spdf+spdf, center=true, $fn=spfn);
            }
            if (sphd>0) for (s=[0:360/sphn:359])
                rotate([0,0,s+25]) translate([0,spd/2+sbrd,-(oh-sph)/2+sphm]) rotate([90,0,0]) scale([spho,1,1]) cylinder(h=sbrd*3+e,d=sphd,center=true,$fn=fn*0.4);
        }

    };
    translate([0,0,-(oh-sph)/2]) cylinder(sph+e,d=spd, center=true);
    difference() {
        translate([0,0,(ch-stkh)/2+e]) cylinder(h=stkh+e,d=od-obrd,center=true);
        translate([0,0,(ch-stkh)/2+e]) cylinder(h=stkh+e+e,d=od-obrd-obrd-e,center=true);
    };
    if (bhid>0) for (s=[0:360/bhin:359])
        rotate([0,0,s+bhir+30]) translate([0,spd/2+sbrd+bhim,-oh/2+(tbbrd+spdf/4)/2]) scale([1,bhio,1]) cylinder(h=tbbrd+spdf/3+e,d=bhid,center=true,$fn=fn*0.3);
    if (bhmd>0) for (s=[0:360/bhmn:359])
        rotate([0,0,s+bhmr]) translate([0,spd/4+sbrd/2+od/4-odaw/2+bhmm,-oh/2+tbbrd/2]) scale([bhmo,1,1]) cylinder(h=tbbrd+e,d=bhmd,center=true,$fn=fn*0.5);
    if (bhod>0) for (s=[0:360/bhon:359])
        rotate([0,0,s+bhor+30]) translate([0,3*od/8+spd/8+sbrd/4-3*odaw/4+bhom,-oh/2+tbbrd/2]) scale([1,bhoo,1]) cylinder(h=tbbrd+e,d=bhod,center=true,$fn=fn*0.3);
    translate([0,0,-(oh-spdf)/2-tbbrd*1.5]) rotate([0,0,15]) cylinder(spdf,d2=spd,d1=spd+spdf+spdf, center=true, $fn=spfn);
};

translate([0, 0, 5]) rotate([0,0,0]) union() {
    difference() {
        rotate([0,0,10]) translate([0,0,odah/2+ch/2]) cylinder(h=odah,d2=od-2*odaw,d1=od,center=true,$fn=odafn);
        rotate([0,0,10]) translate([0,0,(odah-tbbrd)/2+ch/2]) cylinder(h=odah-tbbrd+e,d2=od-2*odaw-obrd*2,d1=od-obrd*2,center=true,$fn=odafn);
        translate([0,0,-tbbrd/2 + oh/2]) cylinder(h=tbbrd+e,d=id,center=true);
        if (fw>0) for(s=[0:360/fwn:359]) rotate([0,0,s+fwr-3]) translate([-id/2+fw*fwm,0,oh/2-tbbrd/2]) rotate([0,0,fwa]) translate([0,fw,0]) union() {
            cube([fw,id/3,tbbrd+e],center=true);
            translate([0,id/6,0]) cylinder(tbbrd+e,d=fw,center=true,$fn=fn*0.3);
        }
        if (thd>0) for (s=[0:360/thn:359])
            rotate([0,0,s+thr+30]) translate([0,id/4+od/4-odaw/2+thm,oh/2-tbbrd/2]) scale([1,tho,1]) cylinder(h=tbbrd+e,d=thd,center=true,$fn=fn*0.7);
        if (odad>0) for (s=[0:360/odan:359])
            rotate([0,0,s+odar+15]) translate([0,od/2-odaw/2,ch/2+odah/2-odam]) rotate([90,0,0]) scale([odao,1,1]) cylinder(h=odaw+e,d=odad,center=true,$fn=fn*0.3);
        if (odas>0) {
            if (odad>0) for (s=[0:360/odan:359])
                rotate([0,0,s+odar+5]) translate([0,od/2-odaw/2,ch/2+odah/2-odam]) rotate([90,0,0]) scale([odao,1,1]) cylinder(h=odaw+e,d=odad,center=true,$fn=fn*0.3);
            for (s=[0:360/odan:359])
                rotate([0,0,s+10]) translate([0,od/2-odaw/2,ch/2+odah/2-odam]) rotate([90,0,0]) cube([odad*odas,odad,odaw+e],center=true);
        };
    };
    difference() {
        translate([0,0,(ch-stkh-stksp)/2+e]) cylinder(h=stkh+stksp+e,d=od-obrd,center=true);
        translate([0,0,(ch-stkh-stksp)/2+e]) cylinder(h=stkh+stksp+e+e,d=od-obrd-obrd-e,center=true);
    };
};

```


[User]
Okay, I'm looking to create a customizable pin loom design using OpenSCAD, and I'd like it to be fairly similar to the `pin_loom_N22.scad` file I've been working with, but with some significant changes. I like the 3-pin staggered arrangement, but the rest I want to be quite flexible.

Here's what I need:

**Overall Structure and Customization:**

*   **Parametric Design:** The design should be entirely parametric, driven by customizable variables. I want to be able to easily change dimensions, pin arrangements, and other features through the customizer interface.
*   **Units:** I'd like the user to be able to switch between millimeters and inches for all length measurements.
*   **Loom Shape:**
    *   I need the option for both square and rectangular looms. The user should be able to specify the width and the height (or just width for a square loom), both in the selected units.
    *   I'd like to have the ability to specify a corner radius for the outer frame.
*   **Pin Arrangement:**
    *   **Staggered Three-Pin Groups:** Maintain the staggered groups of three pin arrangement.
    *   **Pin Pitch or Thread Count:** Like in the original, I want the option to specify the pin spacing (pitch) or the number of threads along the width (and potentially length if different). The design should automatically calculate the required dimensions based on whichever is chosen, and should ensure the thread count results in an even pin count, as the original does. I'd like to keep a "snap-to" behavior for the calculated size that results in an odd number of threads across, similar to the original design.
*   **Frame:**
    *   The frame width and thickness should be adjustable in mm.
    *   I would like an angled interior to help lift the needle, with the angle being a configurable value.
*   **Pins:**
    *   The pin diameter and depth into the frame should be customizable.
    *   Pin length should also be customizable (but may not be printed, so only needs to be accurate for the 2D drawing).
    *   I'd like the option of having a slight taper to the pin holes.
*  **Output Options:**
    *  Like before, I'd like the ability to export a 2D version for lasercutting or drilling, which should show only the frame and pin holes (and no visual guides).

**Visual Aids and Information:**

*   **Optional Hints:** I'd like the option to toggle "hints" for how to wind the yarn (similar to the original). These should include the numbers 1,2,3,4 and directional lines for the yarn.
*    **Text Sizes:** I'd like to be able to adjust the text size of the text labels/numbers.
*    **Loop Calculation:**  I'd like the loop calculation and display to be present for the final (fourth) step, and this should be based on the length and width dimensions of the final loom as the original code does.
*   **Info Display:** Include a display of key parameters such as the final loom dimensions, the thread count, the actual pin gap distance, and the total number of pins, all in the user specified units, as the original code does.
*   **Narrow Gap Warning:** I'd like a warning displayed if the pin gap is too narrow, similar to the original.

**Libraries:**

*   I don't believe I will need any specialized libraries for this design.

**Additional Notes:**

*   The design should be relatively robust to a wide range of inputs. Error checking, etc., is fine, or using reasonable default parameters to prevent bad outcomes is a good approach.
*  I'd like to have text labels indicating if units are in inches or millimeters.

Can you provide me with the necessary OpenSCAD code to achieve this? I'd prefer well-commented code, to help me understand each step. Let me know if you need any further clarification.

[Assistant]
pin_loom_N22.scad:
```
// Pinloom project makes a useful kind of pin loom which has pins in groups of threes.
// Good usage guide here:
//  - https://www.interweave.com/article/crochet/easy-pin-loom-weaving/
// Bias weaving on this style of loom
//  - https://texasgabi.wordpress.com/2021/08/13/zoom-bias-weave/
// Triangle loom weaving
//  - http://adventuresinpinloomweaving.com/2017/10/10/triangle-loom-how-to-use

// Authors:
//  - original:  aethenelle on thingiverse
//  - mods: Neon22 Jan 2023
//     - variable size (snapping to odd threadcounts), draw yarn path guides,
//     - pin pitch or pin count, angled interior,
//     - calculate loops required to finish step4,
//     - export 2D version for lasercutter or drillguide (SVG format),
//     - narrow pin gap warning, calculate pins reqd,
//     - reports, more customiser.
// CCSA license

// ref: 1/8in = 0.125in = 3.175mm
//
// preview[view:north west, tilt:top diagonal]

/*  [Master]  */
Units = "inch"; // ["inch","mm"]
//Desired fabric width in units
Weaving_width = 4;
//Use inter-pin spacing or pin count
Use_pinpitch_or_threadcount = "Pitch"; // [Pitch,Count]
//-Only if 'Pitch' chosen (units)
Pin_pitch = 0.125;
//-Only if 'Count' chosen(odd)
Thread_count = 49; // [15:2:299]
//Is the loom square?
Square_loom = true; // [true,false]
//-Desired fabric length if not square(units)
Weaving_length = 4; //
//Show visual aids
Show_hints = true;  // [true,false]
//Show pins (will not print)
Show_pins = true;   // [true,false]
// Show summary data
Show_info = true;   // [true,false]
// 2D for lasercut/drillguide. Save as SVG
Project_flat = false; // [true,false]

/*  [Frame (mm)]  */
//Width of the frame (mm)
frame_width = 13; // [12:30]
//Thickness of Frame (mm)
frame_thickness = 8;  // [4:1:10]
//Roundness of corners (mm)
corner_radius = 10; // [3:30]
//Angled inner to help lift needle
Inner_angle = 92; //[100,98,96,92,90,88]

/*  [Pins etc(mm)]  */
pin_diameter = 1.002;
// depth of pin hole in frame(mm)
pin_depth = 7;
// Drawing guide only(mm)
pin_length = 15;
// Taper angle of hole (degrees)
taper_angle = 0; // [0:0.2:2]

/*  [Hidden]  */
Delta = 0.1;
pin_res = 6;
corner_res = 80;
hint_depth = 2;
hint_dia = 0.7; //mm
text_size=8;

// Unit conversions to mm
desired_pitch = (Units=="inch") ? Pin_pitch*25.4 : Pin_pitch;
desired_loom_width = (Units=="inch") ? Weaving_width*25.4 : Weaving_width;
desired_loom_length = (Square_loom==true) ? desired_loom_width :
					(Units=="inch") ? Weaving_length*25.4 : Weaving_length;

// correct width/len so odd number of threads
odd_threads = (Thread_count%2==1) ? Thread_count : Thread_count-1;
ppitch = (Use_pinpitch_or_threadcount=="Pitch") ? desired_pitch : desired_loom_width/(odd_threads+1);
calcd_W_pincount = floor(desired_loom_width / ppitch);
calcd_L_pincount = floor(desired_loom_length / ppitch);
// echo("calcd_W_pincount",calcd_W_pincount,(calcd_W_pincount%2 == 0)?"OK":"odd so recalc width");

// calc width,height after forcing calcd_pincounts to be even
loom_width = (calcd_W_pincount%2 == 0) ?
				calcd_W_pincount*ppitch :
				(calcd_W_pincount+1.001)*ppitch;
loom_length = (calcd_L_pincount%2 == 0) ?
				calcd_L_pincount*ppitch :
				(calcd_L_pincount+1.001)*ppitch;;

// echo("pin_pitch",ppitch,desired_loom_width/desired_pitch, calcd_W_pincount);
// echo("loom_width",loom_width, desired_loom_width);
// echo("loom_length",loom_length);
// echo("ratio",loom_length);

// distance from inner edge of platform to pins
pin_inset = max(ppitch,3); // minimum inner edge is 3mm. Also used for labels.

// pin_count_L,pin_count_W have to be whole even numbers for correct threading.
pin_count_W = floor(loom_width / ppitch);
pin_count_L = floor(loom_length / ppitch);
// (threads+1)/4 -1 pins removed on each side (not an exact count)
pins_needed = 3/4 * (pin_count_W*2+pin_count_L*2) - 5;
// echo("pin_count_W",pin_count_W);

//------------------------------------
// Bezier curves -used for hints to draw curves.
// Call BezierBlobs() with a list of points as [x,y,z]triplets.

// return point along curve at position "t" in range [0,1]
// use ctlPts[index] as the first control point
// Bezier curve has order == n
function BezierPoint(ctlPts, t, n, index=0) = (n > 1) ?
	_BezierPoint([for (i = [index:index+n-1]) ctlPts[i] + t * (ctlPts[i+1] - ctlPts[i])], t, n-1) :
	ctlPts[index] + t * (ctlPts[index+1] - ctlPts[index]);

// slightly optimized version takes less parameters
function _BezierPoint(ctlPts, t, n) = (n > 1) ?
	_BezierPoint([for (i = [0:n-1]) ctlPts[i] + t * (ctlPts[i+1] - ctlPts[i])], t, n-1) :
	ctlPts[0] + t * (ctlPts[1] - ctlPts[0]);

// samples sets the order of the Bezier curves that will be stitched together
// if no parameter samples is given, points will be generated for a single curve of order == len(ctlPts) - 1
// Note: samples is number of points *per segment*, not over the entire path.
function BezierPath(ctlPts, degree, samples, index=0) =
	let (
		l1 = samples > 3 ? samples : 200,
		l2 = len(ctlPts)-1,
		n = (degree == undef || degree > l2) ? l2 : degree
	)
	// assert(n > 0)
	[for (segment = [index:n:l2-n], i = [0:l1-1])
		BezierPoint(ctlPts, i / l1, n, segment), ctlPts[l2]];

// Draw the points individually or as ovelapping hulls of cube
// could be spheres or little cylinders but more timeconsuming.
module showPoints(points, size=0.02, smooth=true) {
	if (!smooth)
		// no clever hulling or overlapping - just oversampling
		for (c = points) translate(c) cube(size, center=true);
	else
		// slower but smoother
		for (i = [0:2:len(points)-2]) {
			hull() {
				translate(points[i])
					cube(size, center=true);
				translate(points[i+1])
					cube(size, center=true);
				}
			hull() {
				translate(points[i+1])
					cube(size, center=true);
				translate(points[i+2])
					cube(size, center=true);
				}
		}
}

module BezierBlobs(points, size=.1, degree=4, samples=20, smooth=true) {
	//%showPoints(points, size*3, false);  // show control points as well
	color("cyan")
		showPoints(BezierPath(points, degree, samples), size, smooth);
}
// end of Bezier

//------------------------------------
// hints section

module textline(msg, size=text_size)  {
	linear_extrude(height=hint_depth)
	text(text=msg, size=size, font="Liberation Sans", halign="center");
}

// how many loops do we need to have yarn to finish
// E.g. 31 total = 16 lines reqd +tail. 16W. 1 loop = 2W+2L where L = nW
function calc_loop() =
	let (
		needed = pin_count_L / 2 + 1,  // +1 for tail
		L_factor = pin_count_L/pin_count_W, // >1 means length>width
		loop_widths = 2 + 2 * L_factor // length is 2xW and 2xL each loop
	)
	ceil(needed/loop_widths);

module hints()  {
	loops = calc_loop(); // how many loops for step 4 so enough yarn to finish.
	x1 = -loom_width/2;
	y1 = -loom_length/2-frame_width/4;
	line_width = hint_dia;
	line_depth = (frame_thickness-line_width)/2+Delta;
	// 1
	translate([x1,y1,frame_thickness/2-hint_depth+Delta])
		textline(str(1),frame_width/3);
	// 2
	translate([-x1+frame_width*0.4,y1+frame_width,frame_thickness/2-hint_depth+Delta])
	rotate([0,0,90])
		textline(str(2),frame_width/3);
	// 3
	translate([x1-frame_width*0.3,-y1-frame_width/2,frame_thickness/2-hint_depth+Delta])
		textline(str(3),frame_width/3);
	// 4
	translate([-x1-frame_width*2.3,y1-frame_width*0.1,frame_thickness/2-hint_depth+Delta]) {
		textline(str(4),frame_width/3);
		translate([frame_width*1.1,frame_width*0.05,0])
			textline(str(" (+loop ",loops,"x)"),frame_width/4);
	}
	// starting line
	p1 = [(loom_width-ppitch)/2-ppitch*(pin_count_W-1.5), -(loom_length-ppitch)/2-frame_width, line_depth];
	p2 = [(loom_width-ppitch)/2-ppitch*(pin_count_W-1.5), -(loom_length)/2+frame_width*0.3, line_depth];
	BezierBlobs([p1,p2],line_width,1,3); //straightline so coarse
	// first turn
	p3 = [x1+ppitch, -y1-ppitch*1.6, line_depth];
	p4 = [x1+ppitch*1.2, -y1+ppitch*1.3, line_depth];
	p5 = [x1+ppitch*2.8, -y1+ppitch*1.3, line_depth];
	p6 = [x1+ppitch*3, -y1-ppitch*1.6, line_depth];
	BezierBlobs([p3,p4,p5,p6], line_width, 3, 12);
	// second turn
	p7 = [-x1-ppitch, y1+ppitch, line_depth];
	p8 = [-x1-ppitch, y1-ppitch*0.5, line_depth];
	p9 = [-x1+ppitch*2, y1+ppitch*3.2, line_depth];
	p10 = [-x1, y1+ppitch*3.1, line_depth];
	BezierBlobs([p7,p8,p9,p10], line_width, 3, 20);
	// third turn (corner3)
	p11 = [x1+ppitch*0.1, -y1-ppitch*3.2, line_depth];
	p12 = [x1-ppitch*1.8, -y1-ppitch*3.5, line_depth];
	p13 = [x1+ppitch*1.8, -y1+ppitch*1.2, line_depth];
	p14 = [x1+ppitch*2, -y1-ppitch, line_depth];
	BezierBlobs([p11,p12,p13,p14], line_width, 3, 20);
	// fourth turn
	p15 = [-x1-ppitch*2, y1+ppitch*1.7, line_depth];
	p16 = [-x1-ppitch*2, y1-ppitch*2, line_depth];
	p17 = [-x1+ppitch*3.2, y1+ppitch*2.2, line_depth];
	p18 = [-x1-ppitch*0.5, y1+ppitch*2.2, line_depth];
	BezierBlobs([p15,p16,p17,p18], line_width, 3, 20);
	// final loopback
	p19 = [-x1-ppitch*0.8, -y1-ppitch*2.2, line_depth];
	p20 = [-x1+ppitch*2.8, -y1-ppitch*2.9, line_depth];
	p21 = [-x1+ppitch*2.2, -y1+ppitch*0.3, line_depth];
	p22 = [-x1+ppitch*0.5, -y1-ppitch*2.1, line_depth];
	p23 = [-x1-ppitch*0.5, -y1-ppitch*2.2, line_depth];
	BezierBlobs([p19,p20,p21,p22,p23], line_width, 4, 20);
	// Label
	labelsq = (Units=="inch") ?
				str(Weaving_width,"in sq") :
				str(Weaving_width,"mm sq");
	labelrect = (Units=="inch") ?
				str(Weaving_width,"x",Weaving_length,"in") :
				str(Weaving_width,"x",Weaving_length,"mm");
	labelcount = str(pin_count_W-1);
	label = (Square_loom==true) ?
		str(labelsq,"-",labelcount) :
		str(labelrect,"-",labelcount);
	translate([-x1-frame_width*1.3,-y1-frame_width*0.1,frame_thickness/2-hint_depth+Delta])
		textline(label,frame_width/3);

}

// show info
module show_info()  {
	// Need to show final Units and pitch,count
	// If pitch <nnn then warn.
	offset = 1.72; // *text size for row height
	startpos = loom_length/2 + frame_width + offset*text_size*4;
	actualsq = str("(Actual: ", floor(loom_width*10)/10,"mm. ",floor(loom_width/25.4*100)/100,"in)");
	actual = str("(Actual: ", floor(loom_width*10)/10,"x",floor(loom_length*10)/10,"mm ",floor(loom_width/25.4*100)/100,"x",floor(loom_length/25.4*100)/100,"in)");
	msg_dim = (Square_loom==true) ?
		str(Weaving_width,Units," sq ",actualsq) :
		str(Weaving_width,"x",Weaving_length," ",Units," ",actual);
	msg1 = str("Desired: ",msg_dim);
	msg2 = str(pin_count_W-1," threads wide by ",pin_count_L-1," long");
	msg3 = str("Pin gap ",floor(ppitch*1000)/1000,"mm(",floor(ppitch/25.4*1000)/1000,"in) ");
	msg4 = str("~",pins_needed," pins needed");
	messages = [msg1,msg2,msg3,msg4];
	//
	for (i=[0:len(messages)-1])  {
		translate([0,startpos - offset*text_size*i,0])
		textline(messages[i]);
	}
	// if pin gap < 2mm warn very small
	if (ppitch<2)
		color("red")
		translate([0,startpos + offset*text_size,0]) // above
		textline("Warning: Gap between pins is narrow.");
}

//------------------------------------
// The frame

// A single pin
module pin(taper_angle=1) {
	taper_dia = pin_diameter-sin(taper_angle)*pin_length;
	translate([0,0,frame_thickness/2-pin_depth])
		cylinder(d2=pin_diameter, d1=taper_dia, h=pin_length, $fn=pin_res);
}

module all_pins(taper_angle=0)  {
	// side 1 (vertical LHS)(3,3,...2) BtoT (start+end is offset)
	// must end with one in last pos (top)
	for (i=[0:pin_count_L-2])
		if (i%4 || i==pin_count_L-2)
			translate([-(loom_width-ppitch)/2,-(loom_length-ppitch)/2+ppitch*i,0])
				pin(taper_angle);
	// side 3 (horizontal top)(2,3,3...) LtoR (start+end is offset)
	// must end with one in last pos (RHS)
	for (i=[0:pin_count_W-2]) // will occasionally overlap next downpin but pins line up, so we don't care
		if ((i+2)%4 )
			translate([-(loom_width-ppitch)/2+ppitch*(i+1),(loom_length-ppitch)/2,0])
				pin(taper_angle);
	// side 4 (vertical RHS)(1,3,3...,2) TtoB (start+end lined up)
	// must end with two in last pos (bot)
	for (i=[3:pin_count_L+2])
		if (i%4 || i==pin_count_L+2)
			translate([(loom_width-ppitch)/2,(loom_length-ppitch)/2-ppitch*(i-3),0])
				pin(taper_angle);
	// side 2 (horizontal bottom)(1,3,3,...,4) RtoL (start+end is offset)
	// must end with one in last pos (L)
	for (i=[3:pin_count_W])
		if (i%4||i==pin_count_W)
			translate([(loom_width-ppitch)/2-ppitch*(i-2),-(loom_length-ppitch)/2,0])
				pin(taper_angle);
}

module inner_frame() {
	// hole subtracted from the outer frame - has the angle in it.
	fwidth = loom_width - pin_inset*2 - ppitch;
	flength = loom_length - pin_inset*2 - ppitch;
	angle = Inner_angle/100;
	rotate([180,0,0]) // flip it over so its easy to calc the angle
	linear_extrude(height=frame_thickness+Delta, convexity=4, scale=angle, center=true)
		square([fwidth, flength], center=true);
}

module frame(show_hints=false) {
	difference() {
		// rounded outer perimeter
		hull() {
			// (width-rounded corners)
			cube([loom_width-corner_radius*2, loom_length-corner_radius*2, frame_thickness], center=true);
			for (xside=[-1,1]) { // position 4 cylinders at corners
				tx = (loom_width/2 + frame_width - pin_inset*2 - corner_radius+1) * xside;
				for (yside=[-1,1]) {
					ty = (loom_length/2 + frame_width - pin_inset*2 - corner_radius+1) * yside;
					translate([tx,ty])
						cylinder(r=corner_radius, h=frame_thickness, center=true, $fn=corner_res);
			}}
		}
		//Subtract:
		// inner frame
		inner_frame();
		// pins
		all_pins(taper_angle);
		// visual hints
		if (show_hints)
			hints();
	}
}

// Main
if (Project_flat)
	// 2d projection for a drill guide or laser cutter (no hints)
	projection(cut=true)
	translate([0,0,-frame_thickness/2+Delta])
		frame(false);
	else { // regular 3d model
		frame(Show_hints);
		if (Show_pins)
			%all_pins();
		if (Show_info)
			show_info();
	}

// Todo:
// tapering pin holes suggested.
// - show_info - swap in/mm data depending on user's chosen units
// - choose regular hints or bias hints
// - triangle version
// - hexloom, 60 degree, 120degree looms.
```