[User]
I'd like to create a parametric OpenSCAD design for a flat bed test print, similar to the one I've been using, but with a few tweaks and more flexibility.

Essentially, it's a grid of lines, like a "+" with diagonal lines crossing through it, and a small square at the origin that helps with orientation. It uses `build_plate.scad` to visualize the print bed, but that part doesn't need to be included in the model.

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

*   **`bed_size`**: This is the overall size of the test pattern, in millimeters. It should define the size of a square.
*   **`layer_size`**: This controls the thickness of the lines, which should be the layer height.
*   **`line_width`**: I'd like to be able to control the thickness of the lines in the grid (currently hardcoded as 2).
*   **`orientation_box`**: A boolean (or similar) that determines whether or not the small square at the origin is included. Currently, it is a string with values of "yes" or "no", but I would like a boolean.
*   **`build_plate_selector`**: An integer that allows selection of a pre-configured build plate size. This should use the `build_plate.scad` file included, but does not need to call the function. The values are currently mapped in a strange way, but should be implemented in a less complicated and easier to read way.
*   **`build_plate_manual_x`**: When `build_plate_selector` is set to a specific value indicating the "manual" setting, this would set the x dimension of the build plate.
*   **`build_plate_manual_y`**: Same as above, but sets the y dimension of the build plate.
* **`preview_view`**: This parameter will set the `view` attribute of the preview function, allowing the user to specify an orientation for viewing the model.
* **`preview_tilt`**: This parameter will set the `tilt` attribute of the preview function, allowing the user to specify the tilt angle for the preview.

The output should be a single flat object, suitable for 3D printing, that can be used to test the levelness of a printer's build plate. It should use the `build_plate.scad` library. The library should not be included in the generated files. I don't need a preview of the build plate, just the lines.

Could you generate this, please?

[Assistant]
flat-test.scad:
```
use <utils/build_plate.scad>
//use <build_plate.scad>

/* [Test Pattern] */
// (mm)
bed_size=150;
// (mm)
layer_size=0.2;
orientation_box="yes"; // [yes,no]

half=bed_size/2;

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

/* [Print Bed Setup] */
//for display only, doesn't contribute to final object
build_plate_selector = -1; //[-1: None, 0:Replicator 2,1: Replicator,2:Thingomatic,100:Printrbot,101:Printrbot+,102:Printrbot Simple:103:Printrbot Simple XL,104:Ultimaker,105:Ultimaker 2,106:Solidoodle,3:Manual]

//when Build Plate Selector is set to "manual" this controls the build plate x dimension
build_plate_manual_x = 200;

//when Build Plate Selector is set to "manual" this controls the build plate y dimension
build_plate_manual_y = 200;

bps=build_plate_selector<100?build_plate_selector:3;

// strange way OpenSCAD handles variables
// requires this strangeness
// To add more printers, add them
// to the selector above -- I started
// at 100 to avoid future updates
// to build_plate library
// Then add a bpmx line and a bpmy line
// that looks like the below
// Don't forget the last line needs to
// stay the last line (100;)
bpmx=build_plate_selector==3?build_plate_manual_x:
     build_plate_selector==100?100: //pb
     build_plate_selector==101?200: //pb+
     build_plate_selector==102?100: //pb simple
     build_plate_selector==103?185: // pb simple xl
		build_plate_selector==104?210:  // ultimaker
		build_plate_selector==105?230:  // ultimaker2
	  build_plate_selector==106?150:  // solidoodle
100;

bpmy=build_plate_selector==3?build_plate_manual_y:
     build_plate_selector==100?100:  //pb
     build_plate_selector==101?200:  //pb+
     build_plate_selector==102?100:  //pb simple
     build_plate_selector==103?100:  //pb simple xl
		build_plate_selector==104?210:   //ultimaker
		build_plate_selector==105?225:   //ultimaker2
	 	build_plate_selector==106?150:   // solidoodle
100;

if (build_plate_selector!=-1) build_plate(bps,bpmx,bpmy);

hyp=sqrt(bed_size*bed_size*2);
union() {
translate([-half,-half,0]) cube([bed_size,2,layer_size]);
translate([-half,half,0]) cube([bed_size+1,2,layer_size]);
translate([-half,-half,0]) cube([2,bed_size,layer_size]);
translate([half,-half,0]) cube([2,bed_size+2,layer_size]);
translate([-half,0,0]) cube([bed_size,2,layer_size]);
translate([0,-half,0]) cube([2,bed_size+2,layer_size]);
translate([half,-half,0]) rotate([0,0,45]) cube([2,hyp,layer_size]);
translate([-half,-half,0]) rotate([0,0,-45]) cube([2,hyp,layer_size]);
if (orientation_box=="yes") cube([10,10,layer_size]);
}
```


[User]
Hey, so I'm trying to design a simple candlestick holder for these rolled beeswax candles my girlfriend got, and I'm having a bit of trouble getting started.  I have a rough idea of what I want but need help with the OpenSCAD code.

Basically, it needs to be a cylindrical cup to hold the candle with some legs to stabilize it.  I'm thinking the design should be fully parametric, so it's easy to adjust for different candle sizes and desired leg configurations.

Here's what I'm envisioning:

**Core Elements:**

*   **Candle Cup:** A cylinder that will hold the candle. This needs to have a defined inside diameter for the candle, a wall thickness, and a height.
*   **Legs:**  A number of legs (3 is a good start) that attach to the base of the cylinder, extending outward and then down to the surface, a bit like the legs of a stool. These need to have adjustable length, thickness, and height where they connect to the cylinder. The legs will also be sloped or bent to meet the table nicely.
*   **Material:** The whole thing will need to be designed as a single unit, so it is printable with a 3D printer.

**Parameters:**

I would like to be able to specify the following:

*   `candleDiameter`: The diameter of the candle itself.
*   `height`: The overall height of the cylindrical cup.
*   `thickness`: The thickness of the material for the cup walls.
*   `legs`: The number of legs for the base.
*   `legLength`: The horizontal length of the legs from where they connect to the cylinder.
*   `legThickness`: The thickness of each leg.
*   `legHeight`: The height at which the legs connect to the cylinder base. This is a bit different from how far they go to the ground and is more of the start height before they bend down.
*   `holderHeight`: How far up the top of the legs start up the candle holder - important for that 'bent leg' look.
*  `$fn`: for the circle resolution so we don't have a ton of flat surfaces.

**Design Details:**

*   The legs should be evenly spaced around the base of the cylinder.
*   The legs should be bent or angled so that they reach the surface to be stable.
*   I think subtracting out the inner candle diameter from the cylinder should work to create the inner volume.
*   I would like the design to be relatively simple and easy to 3D print.
*   It would be super handy if you could use comments to describe what each section of the code does.

I think I've explained everything pretty clearly. Could you please generate the OpenSCAD code for this?  I'm not familiar with any libraries yet, so I'm going to assume you'll just be using basic primitives for this. Let me know if you need any more information. Thanks!

[Assistant]
CandleStick.scad:
```
/*
 * Candlestick, v0.42
 *
 * by Alex Franke (CodeCreations), Feb 2014
 * http://www.theFrankes.com
 *
 * Licenced under Creative Commons Attribution - Non-Commercial - Share Alike 3.0
 *
 * INSTRUCTIONS: Choose some values in the "User-defined values" section, and render.
 *
 * v1.00, Feb 8, 2014: Initial Release.
 */

/////////////////////////////////////////////////////////////////////////////
// User-defined values...
/////////////////////////////////////////////////////////////////////////////

/* [Global] */

// Diameter of the candle
candleDiameter = 25;

// Height of the tube that holds the candle
height = 15;

// Thickness of the tube material
thickness = 1.2;

// Number of candle legs
legs = 3;

// Length of candle legs
legLength = 35;

// Thickness of candle legs
legThickness = 20;

// Total height of candle legs
legHeight = 10;

// Height of tube above the surface.
holderHeight = 5;

// Curve quality
$fn=30;

/* [Hidden] */

r = candleDiameter/2 + thickness;
s = legThickness/2;

// how far in do we move the legs so the edges meet the edge of the cylinder?
x = r - sqrt(  pow(r,2) - pow(s,2) );

/////////////////////////////////////////////////////////////////////////////
// Modules
/////////////////////////////////////////////////////////////////////////////

difference() {
	union() {
		cylinder(h=height, r=candleDiameter/2+thickness);
		for(i=[0:legs-1]) {
			rotate([0,0,360/legs*i])
			translate([candleDiameter/2+thickness-x,0,0])
				leg();
		}
	}
	translate([0,0,thickness])
	cylinder(h=height, r=candleDiameter/2);
}

module leg() {
	translate([0,legThickness/2,0])
	rotate([90,0,0])
	linear_extrude( height=legThickness )
	polygon(points=[
		[0,0],
		[0,legHeight],
		[legLength,-holderHeight],
		[holderHeight,-holderHeight]
	]);
}

```


[User]
Hey, I'm looking for help creating a parametric OpenSCAD design for a rocker switch panel, kind of like the one described in the file I've included, "RockerSwitchPanel2.1.scad", but I need it to be more flexible and modular, and I'd like it to support some features not included in the original.

Specifically, I need a design that allows me to easily adjust the following:

**General Panel Properties:**

*   Panel thickness.
*   Diameter of the mounting nut (flat-to-flat).
*   Height of the mounting nut.
*   Diameter of the screw holes used for mounting the clips.
*   Curve quality settings using `$fn`.

**Switch Properties:**

*   Number of rows and columns of switches.
*   Width and length of the switch opening.

**Mounting Clip Properties:**

*   Mounting angle (90 to 180 degrees is preferable).
*   Number of mounting clips.
*   Distance between the clips and the panel edges.
*   Width of the clip that attaches to the mounting board.
*   Thickness of the mounting board.
*   Length of the clip that extends over the board.
*   Length of the extender tab where the panel mounts to.

**Spacing:**

*   Padding between columns of switches.
*   Padding between rows of switches.
*   Margin between the switches and the edges of the panel (X and Y directions).
*   Space allocated for labels.
*   A toggle to specify if the label space should be below or above the switch.

**Additional Features I Need:**

*   I'd like to be able to optionally add a backplate to the switch panel to provide more rigidity, with a settable thickness, and an option to include mounting holes to the backplate for wall-mounting purposes, with settable hole diameters and a user-defined number of them. If these mounting holes are chosen they should also have a settable center margin, so that they don't conflict with the rocker switches.
*   The mounting clip should have an option to be a solid clip that's secured by screws, or a clip with a captive nut that is tightened down with set screws as shown in the provided file. I'd like to be able to select between these two designs with a parameter.
*   It would be awesome if the design supported multiple orientations for the panel in relation to the clips. Ideally there would be a parameter that allowed the panel to be mounted so that the panel extends out in front of, in back of, or even perpendicular to the mounting clips.
*   I need an option to add cutouts for wiring harnesses, these cutouts should have user-defined width, length, and corner radius, as well as user defined center position and rotations.

I'm trying to make this design as versatile as possible so that I can use it across a range of projects, so all of these parameters are really important. I plan to eventually add this to a user-interface for my 3D printer to control my print process, hence the need for a mountable panel and the addition of wiring harness cutouts, which I might eventually need.

I'm not particularly attached to the existing code structure; if a different approach makes more sense, please feel free to use it, and please use the BSL2 library as I have been looking to incorporate that more into my workflow. I'm looking for flexibility and robustness in the final result. I'd also like it if the final output would allow me to export a printable file for each individual component, as well as the assembly, if possible.

[Assistant]
RockerSwitchPanel2.1.scad:
```
/*
 * Rocker Switch Panel, v0.42
 *
 * by Alex Franke (CodeCreations), Feb 2014
 * http://www.theFrankes.com
 *
 * Licenced under Creative Commons Attribution - Non-Commercial - Share Alike 3.0
 *
 * INSTRUCTIONS: Choose some values in the "User-defined values" section, and render.
 *
 * v1.00, Mar 7, 2014: Supports angles between 90-180, suggested by MyMakibox
 * v0.42, Feb 1, 2014: Initial Release.
 */

/////////////////////////////////////////////////////////////////////////////
// User-defined values...
/////////////////////////////////////////////////////////////////////////////

/* [General Properties] */

// The thickness of the material (switch panel, clip, etc)
thickness = 2;

// The in-diameter of mounting nut (flat to flat)
nutInDiameter = 5.5;

// The height of the mounting nut
nutHeight = 2.5;

// The diameter of the screw holes
screwHoleDiameter = 3;

// Curve quality
$fn = 20;

/* [Switch Properties] */

// How many rows of switches?
rows = 1;

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

// The width of the switch opening
switchWidth = 13;

// The length of the switch opening
switchLength = 20;

/* [Mounting Clip Properties] */

// The angle of the mounted panel
angle = 70;

// The number of mounting clips
mountingClips = 3;

// The distance between the mounting clips and the edges of the panel
mountingClipMargin = 3;

// The width of the clip that attaches to the board
clipWidth = 13;

// The thickness of the board you're mounting the clips onto
boardWidth = 6.6;

// The length that the clips extend over the board
boardClampLength = 10;

// The length of the extender tab that you mount the panel to
extenderLength = 11;

/* [Spacing] */

// The amount of space between each column of switches (X direction)
xSwitchPadding = 5;

// The amount of space between each row of switches (Y direction)
ySwitchPadding = 6;

// The amount of space between the switches and the left and right edges of the panel
xMargin = 7;

// The amount of space between the switches and the top and bottom edges of the panel
yMargin = 5;

// How much space to leave for labels
labelPadding = 10;

// Should label space go below the switch or above it?
labelBelow = true;

/////////////////////////////////////////////////////////////////////////////
// The code...
/////////////////////////////////////////////////////////////////////////////

rockerSwitchPanel();

yOffset = ( angle < 90 ) ? 0 : extenderLength * cos(180-angle);

translate([
	(thickness+boardClampLength+extenderLength+1)/2,
	-((thickness*2+boardWidth+nutHeight)/2)-1 - yOffset,
	clipWidth/2
	])
for ( i=[0:mountingClips-1] ) {
	translate([(thickness+boardClampLength+extenderLength+1)*i,0,0])
	mount();
}

/////////////////////////////////////////////////////////////////////////////
// Modules...
/////////////////////////////////////////////////////////////////////////////

module rockerSwitchPanel() {

	panelSize = [
		columns*switchWidth + xSwitchPadding*(columns-1) + xMargin*2,
		rows*(switchLength+labelPadding) + ySwitchPadding*(rows-1) + yMargin*2,
		thickness
		];
	clipSeperation = (panelSize[0] - 2*mountingClipMargin - mountingClips*clipWidth)
		/(mountingClips-1);

	union() {

		// mounting clips
*		translate([
			mountingClipMargin+boardClampLength/2,
			(thickness*2+boardWidth)/2,
			-(thickness+boardClampLength)/2
		])
		for ( i=[0:mountingClips-1] ) {
			translate([i*(clipSeperation+clipWidth),0,0])
			rotate([0,90,180])
			mount();
		}

		// panel
		//	rotate([angle,0,0])
		difference() {
			cube(panelSize);

			translate([xMargin,yMargin+(labelBelow?labelPadding:0),-0.5])
			for( i=[0:columns-1], j=[0:rows-1] ) {
				translate([
					i*(switchWidth+xSwitchPadding),
					j*(switchLength+ySwitchPadding+labelPadding),
					0])
				 	cube([switchWidth, switchLength, thickness+1]);
			}

			// mounting holes
			translate([
				mountingClipMargin+boardClampLength/2,
				extenderLength/2,
				-0.5
				])
			for ( i=[0:mountingClips-1] ) {
				translate([i*(clipSeperation+clipWidth),0,0])
				cylinder( h=thickness+1, r= screwHoleDiameter/2);
			}
		}
	}
}

module mount () {

	boxSize = [thickness+boardClampLength,thickness*2+boardWidth,clipWidth];

	difference() {
		union() {
			cube(boxSize, center=true);
			translate([0,-boardWidth/2-((nutHeight + 0.5)+thickness)/2,0])
				cube([nutInDiameter+thickness,(nutHeight + 0.5)+thickness,clipWidth], center=true);

			translate([-boxSize[0]/2,boxSize[1]/2-0.05,clipWidth/2])
			rotate([180,0,-angle])
			difference() {
				union() {
					cube([thickness,extenderLength,clipWidth], center=false);
					if ( angle > 90 )
						translate([0,-thickness+0.05,0])
						cube([thickness,thickness,clipWidth], center=false);
				}
				translate([-0.5,extenderLength/2,clipWidth/2])
				rotate([0,90,0])
				cylinder(h=thickness+1, r=screwHoleDiameter/2);
			}

			translate([0,0,-clipWidth/2])
			linear_extrude( height=thickness )
				polygon( points=[
					[-boxSize[0]/2,-boxSize[1]/2],
					[-boxSize[0]/2,boxSize[1]/2],
					[-boxSize[0]/2-extenderLength*sin(angle)+thickness*sin(90-angle),
						boxSize[1]/2-extenderLength*cos(angle)-thickness*cos(90-angle)]
					] );

		}
		translate([thickness,0,0])
			cube([boxSize[0],boardWidth,clipWidth+1], center=true);

		translate([0,-(boardWidth/2 + (nutHeight + 0.5)/2 + thickness/2),0])
		rotate([90,-90,0])
		captiveNut( [nutInDiameter,nutHeight + 0.5], setScrewHoleDiameter=screwHoleDiameter,
			depth=10, holeLengthTop=5, holeLengthBottom=5 );
	}
}

// This is the captive nut module I use in several of my designs.
module captiveNut( nutSize, setScrewHoleDiameter=3,
	depth=10, holeLengthTop=5, holeLengthBottom=5 )
{
	render()
	union() {
		nut( nutSize );

		if ( depth > 0 )
			translate([depth/2,0,0])
				cube( [depth, nutSize[0], nutSize[1]], center=true );

		translate([0,0,-(nutSize[1]/2)-holeLengthBottom])
			cylinder(r=setScrewHoleDiameter/2, h=nutSize[1]+holeLengthTop+holeLengthBottom, $fn=15);
	}
}

// nutSize = [inDiameter,thickness]
// (Yes, it's a little nutty.)
module nut( nutSize ) {
	side = nutSize[0] * tan( 180/6 );
	if ( nutSize[0] * nutSize[1] != 0 ) {
		for ( i = [0 : 2] ) {
			rotate( i*120, [0, 0, 1])
				cube( [side, nutSize[0], nutSize[1]], center=true );
		}
	}
}
```


[User]
I'm looking to design a parametric 3D model of a bicycle pump. It should be a simple design, mostly cylindrical, but with a few key features and adjustable dimensions.

Here's what I have in mind:

The pump should have a main body consisting of two cylinders, one inside the other, creating a tube. This tube is actually not fully circular and has a section missing that creates a sort of open channel. The main body is mostly vertical but has a section that arcs at the top. There's also a small rod that slides up and down inside the main cylinder. I'd like to be able to adjust the following parameters:

*   **`heigth`:** The overall height of the pump. I'd like to be able to specify this in mm.
*   **`pumpRadius`:** The radius of the main cylindrical part of the pump.
*   **`cycleRadius`:** The radius of the arc section at the top of the pump.
*   **`thickness`:** The thickness of the walls of the pump's main body.

There should be a connecting arc section with a 90-degree angle at the top. This section is essentially a curved tube connecting to the main cylinder.

Inside the main cylinder, there's the sliding rod. It should move within the space created by the two cylinders. The rod is fairly simple. I want to be able to control the radius of the rod, as well as the radius of the interior space.

I'm envisioning this being constructed using some basic modules for creating arcs, tubes, and open cylinders, where open means it has a section of the cylinder missing.

Finally, I would like the ability to add optional support structures for 3D printing. This should be two thin cylinder-like supports oriented diagonally on either side of the main pump body. The placement of these supports should be parametrically adjustable as well.

I'm open to suggestions on how best to structure the OpenSCAD files. It'd be great if the design is easy to customize. I don't have any existing code, but it looks like the libraries I'd be needing are the basic OpenSCAD libraries, no need for MCAD or anything. Thanks!

[Assistant]
parametricPumpOlder.scad:
```

$fa = .1*1;
$fn = 100*1;

// total heigth
heigth = 75; // [25:100]

// radius of the pump
pumpRadius = 12; // [10:50]

// radius of the bicycle
cycleRadius = 25; // [10:50]

//thickness of the parts
thickness = 1.5; // [1:5]

difference(){
	union(){
		translate([0,cycleRadius+thickness/2,0])
		rotate([0,0,45])
		arcTube(heigth, cycleRadius,cycleRadius+thickness,90);

		translate([0,-pumpRadius-thickness/2,-heigth/6])
		rotate([0,0,180])
		openCyl(2*heigth/3, pumpRadius,pumpRadius+thickness,pumpRadius);

		translate([7,-.5,-heigth/6])
		cylinder(2*heigth/3, r=2, center=true);

		difference(){
			translate([9,-.8,-heigth/6])
			cylinder(2*heigth/3, r=3, center=true);

			translate([12.2,-1.3,-heigth/6])
			cylinder(2*heigth/3, r=3.3, center=true);
		}
	}

	translate([0,26,32])
	rotate([0,90,-20])
	cylinder(100,0,5);

	translate([0,26,-32])
	rotate([0,90,-20])
	cylinder(100,0,5);
}

/* My primitives */

module arcTube(aHeigh,intRadius, extRadius,c){
	difference(){
		arcCyl(heigth, extRadius, c);
		arcCyl(heigth+1, intRadius, c);
	}
}

module arcCyl(aHeigh,radius,c){
	difference(){
		cylinder(aHeigh,radius,radius, true);

		rotate([0,0,-90-c/2])
		translate([-100,0,0])
		cube([200,200,aHeigh+1],true);

		rotate([0,0,-90+c/2])
		translate([-100,0,0])
		cube([200,200,aHeigh+1],true);
	}
}

module openCyl(aHeigh,intRadius, extRadius, openWidth){
	difference(){
		cylinder(aHeigh,extRadius,extRadius, true);
		cylinder(aHeigh+1,intRadius,intRadius, true);

		rotate([0,0,90])
		translate([100,0,0])
		cube([200,openWidth,aHeigh+1], true);

		translate([0,6*aHeigh/10,0])
		rotate([0,90,0])
		cylinder(100,aHeigh/2,aHeigh/2, true);
	}
}
```


[User]
I'd like to generate a parametric dice model in OpenSCAD. The dice should have the standard six sides, each with a different number of pips (1 to 6).

Here's how I imagine it: The overall shape is going to be a cube, with rounded edges. I think the best way to create the roundness would be using a `minkowski()` operation with a sphere. Then, to create the holes for the pips I want to use spheres, rather than cylinders as was done in the example I saw. I want the user to be able to adjust the size of the dice through a `size` parameter. The `quality` parameter, as was used before to control the number of segments per circle using `$fn`, sounds fine for controlling the overall quality of the rounded features. Finally, the pips should be cut into the dice using a `difference()` operation. Please make sure the number of spheres, their positions and the number are correct.

[Assistant]
parametric_dice.scad:
```

quality = 60; // [20:test,60:prod]
$fn=quality*1;

// size of the cube
size = 20; // [0:1000]

difference(){

	color("green")
	intersection(){
		//minkowski(){
//			cube(size-2*cornerRadius, center=true);
//			sphere(cornerRadius);
//		}
		cube(size, center=true);
		rotate([0,0,0]) cylinder(h=size+2, r=.665*size, center=true);
		rotate([0,90,0]) cylinder(h=size+2, r=.665*size, center=true);
		rotate([90,0,0]) cylinder(h=size+2, r=.665*size, center=true);
		sphere(size*75/100);
	}

//1
	translate([0,0,size/2])
	#sphere(size*8/100);
	//#cylinder(depth+1,size*8/100,size*8/100);

//6
	for (b=[-size/5,size/5]){
		for (a=[-size/4,0,size/4]){
			translate([b,a,-size/2])
			#sphere(size*8/100);
		}
	}

//4
	for (b=[-size/5,size/5]){
		for (a=[-size/5,size/5]){
			rotate([0,90,0])
			translate([b,a,size/2])
			#sphere(size*8/100);
		}
	}

//3
	for (a=[-size/5,0,size/5]){
		rotate([0,-90,0])
		translate([a,a,size/2])
		#sphere(size*8/100);
	}

//5
	rotate([90,0,0])
	translate([0,0,size/2])
	#sphere(size*8/100);

	for (b=[-size/5,size/5]){
		for (a=[-size/5,size/5]){
			rotate([90,0,0])
			translate([b,a,size/2])
			#sphere(size*8/100);
		}
	}

// 2
	for (a=[-size/5,size/5]){
		rotate([-90,0,0])
		translate([a,a,size/2])
		#sphere(size*8/100);
	}
}
```


[User]
Okay, so I've been tinkering with some pegboard hooks, and I'd like to get something a bit more configurable and maybe a little more robust. I'm aiming for a parametric design that I can tweak for different pegboard setups and hook styles.

Here's what I have in mind:

**Core Pegboard Parameters:**

*   **`hole_size`**: The diameter of the pegboard holes. Let's start with 7mm as the default.
*   **`tolerance`**: A tolerance value for the peg fit. This will allow for slight variations in pegboard material, with values ranging from 0 (tight) to 10 (loose), and a default of 5.
*   **`backing_board`**: The thickness of the pegboard. Default to 6mm, but I'd like to be able to change this.
*   **`peg_offset`**: The center-to-center spacing between holes on the pegboard, starting with 25mm as default.

**Hook Customization:**

*   **`peg_item`**: This should be a string that lets me select different hook types. Let's do "L" for an L-shaped hook, "R" for a simple round hook, "B" for a supported round hook, and "U" for a U-shaped hook, all with appropriate base geometry to attach to a pegboard with the given parameters above. Let's make "U" the default.
*   **`end_arm_percentage`**: Only relevant for U-shaped hooks; it determines the length of the end upright arm of the "U" relative to the main horizontal arm as a percentage, with a default of 25%.
*   **`peg_length`**: The overall length of the hook from the pegboard surface, defaulting to 20mm, but configurable.
*  **`add_shelf_support`**: A boolean (Y/N) to add an extra peg and angled support arm for added stability when using L, U or supported round hooks. N as default.
*   **`hook_width_percentage`**: Let's make the hook width adjustable as a percentage of the hole size. 100% would be exactly the hole size, but I'd like to go from 50-150% with the default at 100%.

**General Design:**

*   The peg portion should fit snugly into the specified pegboard holes, accounting for the `tolerance`.
*   The hook should be robust enough to handle light loads without breaking or bending.
*   Use variables to calculate necessary dimensions (e.g. cylinder radius, object width, etc.) to make it easy to keep it all linked to user input parameters.

I think this should cover everything I need to get started. I'm not requesting any specific libraries, but if any existing ones fit the needs, feel free to use them. Can you provide a set of OpenSCAD files for this? Thanks!

[Assistant]
pegboard_hook.scad:
```
/* [Peg Type] */
// Type of peg item:
peg_item = "U"; // [L:L shape Hook, R:Round hook, B:Supported Round hook, U:U hook]

// If U shape how big the is the end upright arm in relation to arm, Default 25%:
end_arm_percentage = 25; // [1:100]

// Length of hook from peg board, default 20:
peg_length = 20; // [20:80]

// Add shelf support for L,U or supported Hook, adds an extra peg and support arm
add_shelf_support = "N"; // [N: No, Y: Yes]

// Hook width in relation to hole size, less percentage thinner hook, default 100%:
hook_width_percentage = 100; // [50:150]

/* [Hidden] */
// An offset value used to nudge some parts, shouldn't need to be changed
magic_offset=10;

/* [Peg board] */
// size in mm the peg holes are, default 7mm:
hole_size = 7; // [1:10]

// Backing material Tolerance, 10 for softest, 0 for harder, default 5:
tolerance = 5; // [0:10]

// Thinkness of the peg board backing, default 6mm (1/4 inch):
backing_board = 6; // [1:20]

// The space middle to middle of each hole on the backing board, default 25mm (1 inch):
peg_offset = 25; // [20:40]

sphere_size=hole_size*(1+(tolerance*.006));
cylinder_radius=(hole_size-.5)/2;
object_width=7*(hook_width_percentage/100)+(tolerance/10);
object_clipping=object_width/2+1;
cylinder_height=backing_board-.5-(tolerance/5);
end_peg_length=max((1.6*magic_offset+peg_offset)*(end_arm_percentage/100),object_width);
hook_width=(hook_width_percentage/100)*6;

module fit_peg()
{
    union() {
        translate ([0,0,-backing_board+4])
            sphere(sphere_size/2, $fn=100);
        translate ([0,0,-backing_board+4])
            cylinder(h = backing_board+1, r = cylinder_radius,$fn=100);
    }
}

module back_arm() {

    if ( peg_item == "R" ) {
        translate ([-peg_offset/2,0,(object_width-.5)+1])
            cube( size= [magic_offset+peg_offset,hook_width,hook_width], center=true);
    } else {
        translate ([-peg_offset/2-1,0,(object_width-.5)+1])
            cube( size= [magic_offset+peg_offset,hook_width,hook_width], center=true);
    }
}

module arm() {
	if ( add_shelf_support == "Y") {
		translate ([-2*peg_offset+4.5,0,peg_length/2+magic_offset])
    		    cube( size= [hook_width,hook_width,peg_length], center=true);
	} else {
    		translate ([-peg_offset-1.5*hook_width,0,peg_length/2+5])
        		cube( size= [hook_width,hook_width,peg_length], center=true);
	}
}

module end_arm() {
	if ( add_shelf_support == "Y") {
    		translate ([-2*peg_offset+magic_offset,0,peg_length+7])
        		cube( size= [end_peg_length,hook_width,hook_width], center=true);
	} else {
    		translate ([-peg_offset-2*hook_width+(end_peg_length/2),0,peg_length+5])
        		cube( size= [end_peg_length,hook_width,hook_width], center=true);
	}
}

module hook() {
	if ( add_shelf_support == "Y") {
    		difference() {
        		translate ([-2*peg_offset+2*magic_offset,cylinder_radius-.25,peg_length]) {
            		rotate(a=[90,90,0]) {
                		rotate_extrude(convexity = 10, $fn = 100)
                		translate([6+cylinder_radius, 0, 0])
                		square(size=hook_width, $fn = 100);
            		}
        		}
        		translate ([-2*peg_offset+2*magic_offset,-(magic_offset+1)/2,-1]) cube( size= [80,80,80], center=false);
    		}
	} else {
		difference() {
        		translate ([-peg_offset+5,cylinder_radius-.25,peg_length]) {
           		rotate(a=[90,90,0]) {
                		rotate_extrude(convexity = 10, $fn = 100)
             	   	translate([6+cylinder_radius, 0, 0])
        		        square(size=hook_width, $fn = 100);
    		        }
	        }
        		translate ([-peg_offset+5,-(magic_offset+1)/2,-1]) cube( size= [80,80,80], center=false);
    		}
	}
}

module brace_arm() {
    translate ([-2*peg_offset,0,0]) fit_peg();
    translate ([-1.7*peg_offset,0,(object_width-.5)+1]) cube( size= [peg_offset,hook_width,hook_width], center=true);
    translate ([-2.2*peg_offset,-hook_width/2,1.5*hook_width])  {
        rotate([0,atan(7.5/peg_length),0]) cube( size= [hook_width/1.5,hook_width,peg_length], center=false);
    }
}

module brace() {
    difference() {
        brace_arm();
        translate ([-2+hook_width,0,peg_length/2+5])
            cube( size= [hook_width,hook_width+2,peg_length], center=true);
    }
}

rotate(a=[90,0,0]) {
    difference() {
        union() {
            translate ([-peg_offset,0,0])
                fit_peg();
            translate ([0,0,0])
                fit_peg();
            if ( add_shelf_support == "Y" && peg_item != "R") {
                brace();
            }
            back_arm();
            if ( peg_item == "L" || peg_item == "B" || peg_item == "U" ) {
                arm();
            }
            if ( peg_item == "R" || peg_item == "B") {
                hook();
            }
            if ( peg_item == "U" ) {
                end_arm();
            }

        }
        translate ([0,-object_clipping,0])
            cube( size= [190,3,190], center=true); // clipping plane
        translate ([0,object_clipping,0])
            cube( size= [190,3,190], center=true); // clipping plane
    }
}

```


[User]
Hey, I'm looking to design a parametric pinhole camera system using OpenSCAD, and I've got a few different container sizes I want to be able to work with. I've seen a few designs around the web, but I'm hoping to get a fully parametric one that also includes tripod mounts for both flat and curved surfaces.

Essentially, I need a design for a pinhole camera assembly that can be mounted on cylindrical containers (like coffee cans or tea tins) or flat surfaces (like a cigar box) – that part should be configurable. The main components should be:

1.  **A Shutter Assembly:** This needs to include a rotating shutter blade, a shutter plate, and a mounting ring to attach to the container or flat surface. The shutter needs to be designed so it can be securely attached to both a curved cylindrical and flat surface. I'd like to have a way to adjust how much friction or tension there is in the rotation.

2. **A Pinhole:** The pinhole itself doesn't need to be generated in the model - just a square-ish, tapered hole where a pinhole can be placed.

3. **Tripod Mounts:** I need both a flat mount and a curved mount that will hold a standard 1/4-20 tripod nut, for easy mounting of the camera. This needs to be adjustable for different can diameters too.

Here are some key parameters that I need to be able to change:

*   `can_d`: Diameter of the cylindrical container (this would not be relevant when mounting to a flat surface)
*   `ring_d`: Diameter of the shutter ring
*   `blade`: Thickness of the shutter blade
*   `ring_t`: Thickness of the ring
*   `sp_t`: Thickness of the shutter plate
*   `saddle_t`: Thickness of the saddle
*   `hole`: Size of the square pinhole opening
*  `count`: number of indents in the ring (for friction or grip)
*  `bolt`: diameter of bolt hole
* `offset`: offset for bolt holes
*   `mount_d`: Diameter of the tripod mounting disk
*   `mount_t`: Thickness of the mounting disk
*   `circ`: Diameter of the circular hole for the 1/4-20 nut
*   `elev`: Height of the circular hole
*   `nut`: Size of the 1/4-20 nut across the flats

I'd also like to be able to choose if the shutter and tripod mounts are designed to fit a curved surface or a flat one.

I think I need a few different SCAD files to handle this. One for the pinhole/shutter system itself, and another for the tripod mounts. I'm not sure exactly how to structure the files best, but I want them to be well-organized and easy to modify.

For libraries, I know I'll need something for the hexagon shape needed for the nut, but other than that I don't have any specific library requests. I'm not too familiar with OpenSCAD libraries myself.

Could you generate these SCAD files for me?

[Assistant]
coffeecam_tripod.scad:
```
/* 		CoffeeCam Tripod mounts By schlem
		theschlem@gmail.com
	 	02/07/2014

A parametric assembly for mounting a 1/4-20
tripod nut on a cylindrical surface. Designed
to be expoxied in place holding a flanged nut
captive.
Also generates a version for mounting on flat
surfaces.
The script is customizable for any can diameter.

*/

// ******** First Things ***********************

$fn=120;

// ******** Parameters *************************

// main parameters

can_d 		= 91;  		/* Diameter of coffee can, mm

							illy espresso can - 	91 mm
							Lavazza espresso can -	109 mm
							McCanns Irish Oats -	114 mm
							Quaker Oats -				128 mm

							*/

// misc parameters

mount_d 	= 30;			// diameter of mounting disk

mount_t 	= 6;			// thickness of mounting disk

circ 		= 16;			// diam of circ hole

elev		= 3;			// height of circ hole

nut 		= 11.35;		// nut size across flats, mm

// calculation to convert nut parameter
//  to a radius for a 6-sided "circle"
nut_diam 	= 2*(sqrt((nut*nut)/3));

echo ("nut size across points:", nut_diam, "mm");

// ******** Top Level code *********************

translate([mount_d*0.66,0,mount_t/2]) 			// plated
tmount(diam = mount_d,
		thick = mount_t,
		hole = circ,
		hole_h = elev,
		hex = nut_diam);

translate([-mount_d*0.66,0,mount_t]) 			// plated
tmount_curved(arc = can_d,
				diam = mount_d,
				thick = mount_t*2,
				hole = circ,
				hole_h = elev,
				hex = nut_diam);

// ******** Modules ****************************

// ============ tmount =============

module tmount(diam = 25,
				thick = 8,
				hole = 15,
				hole_h = 4,
				hex = 10,)
{
	difference()
	{
		cylinder(h = thick, r=diam/2, $fs=4, center=true);

		hexagon(hgt=mount_t, w=hex);

		translate([0,0,hole_h])
		cylinder(h = thick, r=hole/2, $fs=4, center=true);

	}
}

// ============ tmount_curved =============

module tmount_curved(arc = 50,
						diam = 25,
						thick = 8,
						hole = 15,
						hole_h = 4,
						hex = 10,)
{
		difference()
	{
		cylinder(h = thick, r=diam/2, $fs=4, center=true);

		hexagon(hgt=mount_t*2, w=hex);

		translate([0,0,hole_h])
		cylinder(h = thick, r=hole/2, $fs=4, center=true);

		translate([0,0,(arc/2)])
		rotate([90,0,90])
		cylinder(h = diam*1.2, r=arc/2, $fs=4, center=true);

	}
}

// ============ hexagon =============

module hexagon(hgt=10, w=8)
{
		cylinder(h = hgt*2, r=w/2, $fn=6, center=true);
}

// ============ end =============/*

```
coffeecam.scad:
```
/* 		CoffeeCam By schlem
		theschlem@gmail.com
	 	02/07/2014

A parametric pinhole and shutter assembly to turn
any can or cylinder into a large format pinhole
camera. Traditionally, a beginner's project in
photography, using an oatmeal box, these parts
are customizable to any can diameter.

*/

// ******** First Things ***********************

$fn=120;

// ******** Parameters *************************

// main parameters

curved = true;			// if true, fits curved cylinder
							// of diameter can_d; if false,
							// makes a flat mount

can_d 		= 91;  		/* Diameter of coffee can, mm

							illy espresso can - 	91 mm
							Lavazza espresso can -	109 mm
							McCanns Irish Oats -	114 mm
							Quaker Oats -				128 mm

							*/

// misc parameters

ring_d 	= 52;			// Diameter of shutter ring

blade 		=2; 			// thickness of shutter blade, mm

ring_t 	= 4;			// Thickness of ring
sp_t 		= blade+1;	// Thickness of shutter_plate
saddle_t	= 1.5;			// Thickness of saddle at thinest point

hole 		= 12;			// Average H&W of square tapered hole

count 		= 45;  		// number of indents in ring
bolt 		= 3;			// bolt diameter, mm
offset		= 19;			// offset for bolt holes

// some simple trig is necessitated, since a four-sided
// cylinder is measured diagonally, across the apices
adj_hole = sqrt(pow(hole,2)*2);

fudge = 1.03; 	// tolerance variable for shutter fit

// ******** Top Level code *********************

plated();
//assembled();

// ******** Modules ****************************

// ============ plated =============

module plated()
{
	translate([50,30,0]) 			// plated
	ring(diam = ring_d, thick = ring_t, whole = adj_hole);
		// diameter, thickness, nominal size of hole

	translate([-45,17,0]) 			// plated
	shutter(ring_d, blade, adj_hole);
		// ring diameter, blade thickness, nominal size of hole

	translate([50,-30,0])
	shutter_plate(dmtr = ring_d, thique = sp_t, hool = adj_hole);
		// ring diameter, shutter_plate thickness, nominal size of hole

	translate([0,0,0])
	saddle(dm=ring_d, t=saddle_t, can=can_d/2);
		// ring diameter, saddle thickness, can diameter
}

// ============ assembled =============

module assembled()
{
	translate([0,0,sp_t])
	ring(diam = ring_d, thick = ring_t, whole = adj_hole);
		// diameter, thickness, nominal size of hole

	translate([0,0,1])
	shutter(ring_d, blade, adj_hole);
		// ring diameter, blade thickness, nominal size of hole

	translate([0,0,0])
	shutter_plate(dmtr = ring_d, thique = sp_t, hool = adj_hole);
		// ring diameter, shutter_plate thickness, nominal size of hole

	mirror([0,0,1])
	saddle(dm=ring_d, t=saddle_t, can=can_d/2);
		// ring diameter, saddle thickness, can diameter
}

// ============ ring =============

module ring(diam=30, thick=3, whole=20)
{
	difference()
	{
		translate([0,0,thick/2])
		cylinder(h = thick, r=diam/2, $fs=4, center=true);

		translate([0,0,-saddle_t - sp_t-1])
		cone();

		// a=hole size, b=offset from center, c=height
		perf(bolt, offset, ring_t);

		translate([0,0,thick/2])
		henge(x=2, y=2, z=thick*1.1, offset=diam/2);

		translate([0,0,(thick/2)+3])
		cylinder(h = thick, r=diam*.9/2, $fs=4, center=true);
	}
}

// ============ shutter_plate =============

module shutter_plate(dmtr=30, thique=3, hool=20)
{
		difference()
		{
			translate([0,0,thique/2])
			cylinder(h = thique, r=dmtr/2, $fs=4, center=true);

			union()
			{
				translate([0,0,blade/2+1])
				scale([fudge,fudge,1.05])
				cube(size = [hool*1.4,dmtr,blade], center = true);
				translate([0,dmtr/2,blade/2+1])
				scale([fudge,fudge,1.05])
				cylinder(h = blade, r = hool*0.9, center = true);
			}

			// a=hole size, b=offset from center, c=height
			perf(bolt, offset, sp_t);

			translate([0,0,-saddle_t-1])
			cone();
		}
}

// ============ shutter =============

module shutter(rd = 30, zed = 2, hd = 10)
{
	difference()
	{
		union()
		{
			translate([0,0,zed/2])
			cube(size = [hd*1.4,rd,zed], center = true);
			translate([0,rd/2,0])
			cylinder(h = zed, r = hd*0.9);

			translate([0,-2*hd,zed/2])
			cube(size = [hd*1.4,rd,zed], center = true);
			translate([0,-rd/2-2*hd,0])
			cylinder(h = zed, r = hd*0.89);
		}
		translate([0,0,-sp_t-.5])
		cone();
	}
}

// ============ saddle =============

module saddle(dm=30, t=3, can=10)
{
	difference()
	{
		translate([0,0,ring_d/2])
		cylinder(h = ring_d, r=dm/2, $fs=4, center=true);

		translate([0,0,1])
		cube(5.5,center=true);

		// a=hole size, b=offset from center, c=height
		perf(bolt, offset, can*1.1);

		translate([0,0,can/2])
		henge(x=2, y=2, z=can*1.1, offset=dm/2);

		if (curved)

		{
    		translate([0,0,(can)+t])
			rotate([90,0,90])
			cylinder(h = dm*1.2, r=can, $fs=4, center=true);
		}
		else
		{
		   translate([0,0,ring_d/2+2])
			cube(size = ring_d+2, center = true);
		}
	}
}

// ============ cone =============

module cone(min_d=0, max_d=hole*2.5, hite = (ring_t + sp_t + saddle_t) *1.3)
{

	rotate([0,0,45])
	translate([0,0,hite/2+1])
	cylinder
		(h = hite, r1 = min_d, r2 = max_d, $fn=4, center = true);
}

// ============ perf =============

module perf(a=4, b=20, c=10)
// a=hole size, b=offset from center, c=height
{
	translate([b,0,c/2])
	cylinder(h = c*1.1, r = a/2, center = true);

	mirror ([1,0,0])
	translate([b,0,c/2])
	cylinder(h = c*1.1, r = a/2, center = true);
}

// ============ henge =============

module henge(x=20, y=20, z=8, offset=20)

// I'm sure there is a better name for a concentric ring
// of columns, but I don't know what it is...
{
	for ( i = [0 : count-1] )
	{
		rotate([0,0,(360/count)*i])
		translate([offset,0,0])
			cylinder(h=z, r=x/2, center=true);
			//cube(size = [x,y,z], center = true);
	}
}

// ============ end =============/*

```
TeaCam_tripod.scad:
```
/* 		CoffeeCam Tripod mounts By schlem
		theschlem@gmail.com
	 	02/07/2014

A parametric assembly for mounting a 1/4-20
tripod nut on a cylindrical surface. Designed
to be expoxied in place holding a flanged nut
captive.
Also generates a version for mounting on flat
surfaces.
The script is customizable for any can diameter.

*/

// ******** First Things ***********************

$fn=120;

// ******** Parameters *************************

// main parameters

can_d 		= 66.25;  		/* Diameter of coffee can, mm

							illy espresso can - 	91 mm
							Lavazza espresso can -	109 mm
							McCanns Irish Oats -	114 mm
							Quaker Oats -				128 mm

							*/

// misc parameters

mount_d 	= 35;			// diameter of mounting disk

mount_t 	= 6;			// thickness of mounting disk

circ 		= 16;			// diam of circ hole

elev		= 3.75;			// height of circ hole

nut 		= 11.35;		// nut size across flats, mm

// calculation to convert nut parameter
//  to a radius for a 6-sided "circle"
nut_diam 	= 2*(sqrt((nut*nut)/3));

echo ("nut size across points:", nut_diam, "mm");

// ******** Top Level code *********************

//translate([mount_d*0.66,0,mount_t/2]) 			// plated
//tmount(diam = mount_d,
//		thick = mount_t,
//		hole = circ,
//		hole_h = elev,
//		hex = nut_diam);

//translate([-mount_d*0.66,0,mount_t]) 			// plated
translate([0,0,mount_t]) 			// plated
tmount_curved(arc = can_d,
				diam = mount_d,
				thick = mount_t*2,
				hole = circ,
				hole_h = elev,
				hex = nut_diam);

// ******** Modules ****************************

// ============ tmount =============

module tmount(diam = 25,
				thick = 8,
				hole = 15,
				hole_h = 4,
				hex = 10,)
{
	difference()
	{

		cylinder(h = thick, r=diam/2, $fs=4, center=true);

		hexagon(hgt=mount_t, w=hex);

		translate([0,0,hole_h])
		cylinder(h = thick, r=hole/2, $fs=4, center=true);

	}
}

// ============ tmount_curved =============

module tmount_curved(arc = 50,
						diam = 25,
						thick = 8,
						hole = 15,
						hole_h = 4,
						hex = 10,)
{
		difference()
	{
		scale([1.5,1,1])
		cylinder(h = thick, r=diam/2, $fs=4, center=true);

		hexagon(hgt=mount_t*2, w=hex);

		translate([0,0,hole_h])
		cylinder(h = thick, r=hole/2, $fs=4, center=true);

		translate([0,0,(arc/2)])
		rotate([90,0,90])
		cylinder(h = diam*3, r=arc/2, $fs=4, center=true);

	}
}

// ============ hexagon =============

module hexagon(hgt=10, w=8)
{
		cylinder(h = hgt*2, r=w/2, $fn=6, center=true);
}

// ============ end =============/*

```


[User]
I want to design a secondary handle that can be attached to a shovel, or really any long-handled tool. I've seen some that clamp on, and that seems like the best way to go. I need to be able to adjust the handle position, so it shouldn't be rigidly attached, and I'd like to be able to print it in two pieces and glue them together.

The handle should have a cylindrical grip, a clamping mechanism to attach it to the tool handle, and angled side walls to connect the handle and clamp. I want to use screws to tighten the clamp, and also use pins for alignment when gluing the two halves together.

Here are some parameters I'd like to be able to customize:

**General:**

*   `layout`:  A choice between "whole" (print the entire part as one piece) or "split" (print two halves).
*   `wall_thickness`: The thickness of the main walls, excluding the handle cylinder.
*   `pin_diameter`: The diameter of the filament used for alignment pins.
*   `hole_clearance`: Extra space around the alignment pin holes to make the pins fit well.
*   `layer_height`: The layer height of my printer
*   `extrusion_width`: The extrusion width of my printer

**Handle:**

*   `handle_length`: The length of the cylindrical handle part.
*   `handle_outer_diameter`: The outer diameter of the handle.
*  `handle_wall_thickness`: The thickness of the handle cylinder walls.
*   `handle_flange_border`: A flange at each end of the handle, which affects the number of supports that are needed for printing the whole part.

**Clamp:**

*   `clamp_inner_diameter`:  The diameter of the tool handle that will be clamped.
*   `clamp_length`:  The length of the clamping area.
*   `clamp_gap`:  The resting gap between the clamp halves before tightening.
*   `screw_od`: The outer diameter of the screws used.
*   `washer_od`: The outer diameter of the washers used.
*   `clamp_flange_length`: Length of the clamp's flanges where the screw holes are placed.
*   `side_angle`: The angle of the side walls connecting the handle and clamp.

I think I also need to define `slop` for some very small extra space to prevent coincident faces, and `$fn` to control the roundness of things, both of which could be fixed parameters. I would like to use the `hull()` function, and the `linear_extrude()` function.

Could you design this for me? Thanks!

[Assistant]
shovel-handle-2.scad:
```
/* [General] */

// "whole" gives you the entire part, to be printed as a piece. It can be difficult to print. "split" gives you the top half of the part, for you to print twice and glue together.
layout = "split"; // [whole, split]

// Thickness of all the walls except the handle cylinder.
wall_thickness = 6;

// Specify the diameter of your filament. Holes are provided for alignment pins to aid in gluing, if printing in halves. Put in pieces of filament in the alignment holes to help you glue the halves. If you're going to do this, measure your filament.
pin_diameter = 1.75;

// Extra clearance for alignment pins.
hole_clearance = 0.1;

// Also need to know the layer height you are printing at.
layer_height = 0.25;

// And the extrusion width.
extrusion_width = 0.38;

/* [Handle] */
handle_length = 125;
handle_outer_diameter = 30;

// Determines size of hole in handle. If you don't want a hole in the handle, make this greater than or equal to handle_outer_diameter / 2.
handle_wall_thickness = 15;

// Set this to zero to require fewer supports if printing as one piece.
handle_flange_border = 3;

/* [Clamp] */
// Diameter of the thing you're going to be clamping onto.
clamp_inner_diameter = 30;

// Setting clamp_length to handle_outer_diameter + 2*handle_flange_border will reduce the number of supports required.
clamp_length = 50;

// Resting distance between the clamps. Don't make this too big, or you won't be able to bring the clamps together properly. Too small, though, and you may not be able to get it around your object. Partly depends on the material you are using, and the wall thickness you have chosen.
clamp_gap = 3;

// #10 screws
screw_od = 5.1;

// and #10 washers
washer_od = 12.7;

// Allow enough space to fit your washers. Wing nut screws may require some more clearance.
clamp_flange_length = 13;

// Angle from vertical for the sidewalls.
side_angle = 40;

/* [Hidden] */
// To avoid coincident faces.
slop = 1;
$fn = 50;
clamp_outer_diameter = clamp_inner_diameter + 2 * wall_thickness;

module screw() {
    rotate([0, 90, 0])
    cylinder(r = screw_od/2 + hole_clearance, h = clamp_gap + 2*wall_thickness + 2*slop, center = true, $fn = 20);
}

module clamp() {
  screw_z = clamp_length/2 - washer_od/2;
  screw_y = clamp_inner_diameter/2 + wall_thickness + clamp_flange_length / 2;

  difference() {
    union() {
      // Clamp outside shell
      hull() {
        translate([-clamp_gap/2, 0, 0])
        cylinder(h = clamp_length, r = clamp_outer_diameter/2, center = true);

        translate([clamp_gap/2, 0, 0])
        cylinder(h = clamp_length, r = clamp_outer_diameter/2, center = true);
      }

      // Flange
      cube([clamp_gap + 2*wall_thickness, clamp_outer_diameter + 2*clamp_flange_length, clamp_length], center = true);
    }
    // Clamp hole
    hull() {
      translate([-clamp_gap/2, 0, 0])
      cylinder(h = clamp_length + slop, r = clamp_inner_diameter/2, center = true);

      translate([clamp_gap/2, 0, 0])
      cylinder(h = clamp_length + slop, r = clamp_inner_diameter/2, center = true);
    }

    // Gap
    cube([clamp_gap, clamp_outer_diameter + 2*clamp_flange_length + slop, clamp_length + slop], center = true);

    // Screw holes
    translate([0, screw_y, screw_z]) screw();
    translate([0, screw_y, -screw_z]) screw();
    translate([0, -screw_y, screw_z]) screw();
    translate([0, -screw_y, -screw_z]) screw();
  }
}

handle_flange_length = handle_outer_diameter + 2*handle_flange_border;

module handle_flange() {
  cylinder(h = wall_thickness, r = handle_flange_length/2);

  translate([-handle_flange_length/2, -handle_flange_length/2, 0])
  cube([handle_flange_length, handle_flange_length/2, wall_thickness]);
}

module handle() {
  translate([0, handle_flange_length/2, 0])
  rotate([0, 90, 0])
  difference() {
    union() {
      // Handle outer shell
      cylinder(h = handle_length, r = handle_outer_diameter/2, center = true);

      // Flanges
      translate([0, 0, handle_length/2])
      handle_flange();

      translate([0, 0, -handle_length/2 - wall_thickness])
      handle_flange();
    }
    cylinder(h = handle_length + 2*wall_thickness + slop, r = handle_outer_diameter/2 - handle_wall_thickness, center = true);
    cube([handle_outer_diameter + 2*wall_thickness, ]);
  }
}

// We want the side walls to coincide with the outside corner of the clamp, but the inside corner of the handle.
// Math is hard.
W = wall_thickness / cos(side_angle);
x = W - wall_thickness;
clamp_y_intercept = (handle_length - clamp_gap) / 2 / tan(side_angle) + x / tan(side_angle);

//Title: Wedge Module
//Author: Alex English - ProtoParadigm
//Date: 1/4/2013
//License: Creative Commons - Share Alike - Attribution

//Usage: Include in your other .scad projects and call wedge with arguments for the height of the wedge, the radius of the wedge, and the angle of the wedge in degrees.  The resulting wedge will be placed with the point at the origin, extending into the z axis, with the angle starting at the x axis and extending counter-clockwise as per the right-hand rule.

//Updated: 1/12/2013 - Increased dimensions of wedge to be revoved when angle is more than 180 as per suggestion from kitwallace.

module wedge_180(h, r, d)
{
  rotate(d) difference()
  {
    rotate(180-d) difference()
    {
      cylinder(h = h, r = r);
      translate([-(r+1), 0, -1]) cube([r*2+2, r+1, h+2]);
    }
    translate([-(r+1), 0, -1]) cube([r*2+2, r+1, h+2]);
  }
}

module wedge(h, r, d)
{
  if(d <= 180)
    wedge_180(h, r, d);
  else
    rotate(d) difference()
    {
      cylinder(h = h, r = r);
      translate([0, 0, -1]) wedge_180(h+2, r+1, 360-d);
    }
}

module side_wall() {
  side_length = clamp_y_intercept / cos(side_angle) - W * sin(side_angle);

  translate([-handle_length/2, clamp_y_intercept])
  rotate([90, 0, -(90 - side_angle)])
  linear_extrude(height = wall_thickness)
  polygon([
    [0, handle_flange_length/2],
    [side_length, clamp_length/2],
    [side_length, -clamp_length/2],
    [0, -handle_flange_length/2]
  ]);

  translate([-clamp_gap/2 - wall_thickness, 0, -clamp_length/2])
  wedge(h = clamp_length, r = wall_thickness, d = side_angle + 1);

  translate([-handle_length/2, clamp_y_intercept, -handle_flange_length/2])
  rotate([0, 0, 180])
  wedge(h = handle_flange_length, r = wall_thickness, d = side_angle + 1);
}

//-- Locating pin hole with glue recess
// http://softsolder.com/2013/11/12/improved-alignment-pin-hole-for-split-3d-prints/

module PolyCyl(Dia,Height,ForceSides=0) {           // based on nophead's polyholes
  Sides = (ForceSides != 0) ? ForceSides : (ceil(Dia) + 2);
  FixDia = Dia / cos(180/Sides);
  cylinder(r=FixDia/2 + hole_clearance,
           h=Height,
           $fn=Sides);
}

module LocatingPin(Dia=pin_diameter,Len=5.00) {

  translate([0,0,-layer_height])
  PolyCyl((Dia + 2*extrusion_width),2*layer_height,4);

  translate([0,0,-2*layer_height])
  PolyCyl((Dia + 1*extrusion_width),4*layer_height,4);

  translate([0,0,-(Len/2 + layer_height)])
  PolyCyl(Dia,(Len + 2*layer_height),4);
}

module part() {
  translate([0, clamp_y_intercept, 0])
  handle();

  translate([0, -clamp_outer_diameter/2 - clamp_flange_length, 0])
  clamp();

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

module tabs() {
  top_left_y = clamp_y_intercept + handle_flange_length;
  top_left_x = -handle_length/2 - wall_thickness;

  translate([top_left_x - 5, top_left_y - 5, 0])
  cube([10 + wall_thickness, 10, layer_height]);

  translate([handle_length/2 - 5, top_left_y - 5, 0])
  cube([10 + wall_thickness, 10, layer_height]);

  translate([-(clamp_gap/2 + wall_thickness + 5), -(2*clamp_flange_length + 2*wall_thickness + clamp_inner_diameter + 5), 0])
  cube([10 + 2*wall_thickness + clamp_gap, 10, layer_height]);
}

module split() {
  difference() {
    part();
    translate([-200, -200, -100])
    cube([400, 400, 100]);

    translate([clamp_gap/2 + wall_thickness/2, -(1.5*clamp_flange_length + 2*wall_thickness + clamp_inner_diameter)])
    LocatingPin();

    translate([-(clamp_gap/2 + wall_thickness/2), -(1.5*clamp_flange_length + 2*wall_thickness + clamp_inner_diameter)])
    LocatingPin();

    translate([(handle_length + wall_thickness)/2, clamp_y_intercept + handle_flange_length - handle_flange_border - handle_wall_thickness/2, 0])
    LocatingPin();

    translate([-(handle_length + wall_thickness)/2, clamp_y_intercept + handle_flange_length - handle_flange_border - handle_wall_thickness/2, 0])
    LocatingPin();
  }
  tabs();
}

if (layout == "whole") part();
else split();
```


[User]
Hey, I'm trying to create a test object for 3D printer vibration issues, specifically ringing. I've got an idea for a cylindrical object with dimples arranged in tiers, and I want to be able to tweak all of the dimensions.

Here’s what I need:

*   **Cylinder:** A basic cylinder. I want to control the radius and the wall thickness.
*   **Dimples:** The cylinder should have multiple tiers of dimples, with each tier offset from the one below it.
*   **Tiered Structure:** The dimples should be arranged in horizontal "tiers" around the cylinder, and should be offset 180 degrees between tiers.
*   **Parameters:** I need to be able to set:
    *   Layer height (for calculating tier heights)
    *   Cylinder radius
    *   Cylinder wall thickness
    *   Number of layers without dimples on top and bottom
    *   Number of dimple tiers
    *   Number of layers per tier
    *   Depth of the dimples
    *   Number of dimples per tier

I also need the dimples to be spherical cutouts on the exterior wall of the cylinder, and should have an appropriate radius so they are tangent to the surface. Also it'd be great if there were some comments that explain how each calculation is derived so I understand what's going on and can adjust it.

Can you write OpenSCAD code to generate this? I'd prefer it if it was just in one `.scad` file rather than multiple, since this isn't a huge project. Thanks!

[Assistant]
testcylinder.scad:
```
layer_height = .25;
cylinder_radius = 20;
cylinder_thickness = 3;
top_and_bottom_layers = 3;
n_tiers = 8;

// Make this an even number.
layers_per_tier = 16;

dimple_depth = 1;
dimples_per_tier = 4;

/* [Hidden] */
tier_height = layers_per_tier * layer_height;
padding = top_and_bottom_layers * layer_height;
cylinder_height = n_tiers * tier_height + 2 * padding;

dimple_radius = (dimple_depth * dimple_depth + tier_height * tier_height / 4) / (2 * dimple_depth);

difference() {
  cylinder(h = cylinder_height, r = cylinder_radius, $fn = 100);
  translate([0, 0, -.5]) cylinder(h = cylinder_height + 1, r = cylinder_radius - cylinder_thickness);
  for (z = [0:(n_tiers + 1)/2 - 1], i = [0:(dimples_per_tier - 1)]) {
   rotate(i * 360/dimples_per_tier, [0, 0, 1])
   translate([0, cylinder_radius + dimple_radius - dimple_depth, padding + tier_height/2 + 2 * z * tier_height])
   sphere(r = dimple_radius, $fn = 20);
 }
 for (z = [0:n_tiers/2 - 1], i = [0:(dimples_per_tier - 1)]) {
   rotate(i * 360/dimples_per_tier + 180/dimples_per_tier, [0, 0, 1])
   translate([0, cylinder_radius + dimple_radius - dimple_depth, padding + 1.5*tier_height + 2 * z * tier_height])
   sphere(r = dimple_radius, $fn = 20);
 }
}
```
testcylinder.scad:
```
extrusion_layer_height = .25;
cylinder_radius = 20;
cylinder_thickness = 3;

// No dimples in this number of layers on top and bottom.
top_and_bottom_layers = 3;

// How many rows of dimples you want.
n_tiers = 8;

// Make this an even number.
layers_per_tier = 16;

// How deep the dimples should be.
dimple_depth = 1;

// Every other tier is offset from the one below.
dimples_per_tier = 4;

/* [Hidden] */
tier_height = layers_per_tier * extrusion_layer_height;
padding = top_and_bottom_layers * extrusion_layer_height;
cylinder_height = n_tiers * tier_height + 2 * padding;

dimple_radius = (dimple_depth * dimple_depth + tier_height * tier_height / 4) / (2 * dimple_depth);

difference() {
  cylinder(h = cylinder_height, r = cylinder_radius, $fn = 100);
  translate([0, 0, -.5]) cylinder(h = cylinder_height + 1, r = cylinder_radius - cylinder_thickness);
  for (z = [0:(n_tiers + 1)/2 - 1], i = [0:(dimples_per_tier - 1)]) {
   rotate(i * 360/dimples_per_tier, [0, 0, 1])
   translate([0, cylinder_radius + dimple_radius - dimple_depth, padding + tier_height/2 + 2 * z * tier_height])
   sphere(r = dimple_radius, $fn = 20);
 }
 for (z = [0:n_tiers/2 - 1], i = [0:(dimples_per_tier - 1)]) {
   rotate(i * 360/dimples_per_tier + 180/dimples_per_tier, [0, 0, 1])
   translate([0, cylinder_radius + dimple_radius - dimple_depth, padding + 1.5*tier_height + 2 * z * tier_height])
   sphere(r = dimple_radius, $fn = 20);
 }
}
```
testcylinder.scad:
```
extrusion_layer_height = .25;
cylinder_radius = 20;
cylinder_thickness = 3;

// No dimples in this number of layers on top and bottom.
top_and_bottom_layers = 3;

// How many rows of dimples you want.
n_tiers = 8;

// Make this an even number.
layers_per_tier = 16;

// How deep the dimples should be.
dimple_depth = 1;

// Every other tier is offset from the one below.
dimples_per_tier = 4;

/* [Hidden] */
tier_height = layers_per_tier * extrusion_layer_height;
padding = top_and_bottom_layers * extrusion_layer_height;
cylinder_height = n_tiers * tier_height + 2 * padding;

dimple_radius = (dimple_depth * dimple_depth + tier_height * tier_height / 4) / (2 * dimple_depth);

difference() {
  cylinder(h = cylinder_height, r = cylinder_radius, $fn = 100);
  translate([0, 0, -.5]) cylinder(h = cylinder_height + 1, r = cylinder_radius - cylinder_thickness);
  for (z = [0:(n_tiers + 1)/2 - 1], i = [0:(dimples_per_tier - 1)]) {
   rotate(i * 360/dimples_per_tier, [0, 0, 1])
   translate([0, cylinder_radius + dimple_radius - dimple_depth, padding + tier_height/2 + 2 * z * tier_height])
   sphere(r = dimple_radius, $fn = 20);
 }
 for (z = [0:n_tiers/2 - 1], i = [0:(dimples_per_tier - 1)]) {
   rotate(i * 360/dimples_per_tier + 180/dimples_per_tier, [0, 0, 1])
   translate([0, cylinder_radius + dimple_radius - dimple_depth, padding + 1.5*tier_height + 2 * z * tier_height])
   sphere(r = dimple_radius, $fn = 20);
 }
}
```


[User]
Hey there! I'm looking to create a pet bowl, and I'd like to use OpenSCAD to make it parametric so I can easily adjust the size and customize it. I have a basic idea of how I want it to look and some dimensions in mind.

Essentially, I want a bowl that has a truncated cone shape with a flat bottom. The base of the cone will be wider than the top. I'd like to be able to control:

*   The diameter of the bottom of the cone (cone\_bot)
*   The diameter of the top of the cone (cone\_top)
*   The height of the cone (cone\_h)
*   The interior diameter of the bowl (bowl\_d), which will essentially create a scooped out portion within the cone.
*   The wall thickness of the cone portion (wall\_t)
*   And I'd like to be able to add text to the outside of the bowl, using a variable called 'words'

I'd like to use the `write/Write.scad` library for the text embossing, which I'll include.

Could you generate the necessary OpenSCAD code to do this? I'd prefer it to be fully parametric, so I can change these dimensions and the text easily.

[Assistant]
pet_bowl.scad:
```
use <write/Write.scad>

wig = 0.01/1; // Number to ensure overlaps.

//Number of facets in a circle. More = smoother.
$fn=60; // [15,20,30,45,60,100]

//Diameter of the bottom of the bowl.
cone_bot = 165;

//Diameter of the top of the bowl.
cone_top = 140;

//Height of the bowl.
cone_h = 50;

//Interior diameter of the bowl.
bowl_d = 127;

//Wall thickness of the cone portion of the bowl.
wall_t = 2;

//Words on the bowl.
words = "FIDO";

delta = (cone_bot-cone_top)/2;
avg_r = (cone_top+cone_bot)/4;
angle = atan(delta/cone_h);

module bowl(TEXT) {
  difference() {
    union() {
      cylinder(r1=cone_bot/2,r2=cone_top/2,h=cone_h,center=false);
      intersection() {
        writecylinder(text=TEXT,where=[0,0,0],radius=avg_r,height=cone_h,h=0.4*cone_h,t=delta);
        cylinder(r1=cone_bot/2+wall_t,r2=cone_top/2+wall_t,h=cone_h,center=false);
      }
    }
    difference() {
      translate([0,0,-wall_t/sin(angle)]) cylinder(r1=cone_bot/2, r2=cone_top/2, h=cone_h,center=false);
      translate([0,0,cone_h-wall_t/sin(angle)]) scale([1,1,2*(cone_h-wall_t)/bowl_d]) sphere(bowl_d/2);
    }
    translate([0,0,cone_h]) scale([1,1,2*(cone_h-wall_t)/bowl_d]) sphere(bowl_d/2);
  }
}

bowl(words);

```


[User]
Okay, so I'm looking to create a customizable heart-shaped design with text on it for Valentine's Day. I want it to be parametric so I can easily change the text, heart size, and text details. Basically, I need an OpenSCAD design that lets me personalize a heart with a message.

Here's what I'm thinking:

*   **Heart Shape:** The base should be a heart shape, created by combining a square with two circles. It should be able to change size (I'm thinking in terms of height or edge length of the square that makes up the heart). The heart should be extruded to a specific thickness.
*   **Text:** I need to put text on the flat surface of the heart. I'd like two lines of text that can be specified, with configurable text height, text thickness, vertical spacing between lines, and the distance of the first line from the center of the heart.
*   **Parameters:** I want to be able to control all of these as parameters:
    *   Text for both lines of text.
    *   Thickness of the text.
    *   Height of the text.
    *   Vertical position of the text.
    *   Vertical spacing between the two lines of text.
    *   Height of the heart.
    *   Thickness of the heart.
*   **File structure:** Just one .scad file is probably fine. I don't want the code to get too long or unmanageable.
*   **Libraries:** It'll need to use the `write` library, so please keep that in mind. Specifically it'll need `write/Write.scad`

I'm picturing the text laid out on the surface of the extruded heart, like it is carved into the top.

Can you help me create this OpenSCAD file?

[Assistant]
Customizable_Heart.scad:
```
use <write/Write.scad>

// Parameters

/* [Text] */
line_1_text = "I Love";
line_2_text = "You";
text_thickness = 5;
text_height = 5.7;
text_position = 12;
line_spacing = 8;

/* [Heart] */
heart_height = sqrt(800);
heart_thickness = 5;

/* [Hidden] */
$fs = 0.01;
$fa = 5;
heart_edge = sqrt(heart_height*heart_height/2);

module flat_heart(edge)
{
  square(edge);

  translate([edge/2, edge, 0])
  circle(edge/2);

  translate([edge, edge/2, 0])
  circle(edge/2);
}

rotate([0,0,45])
	linear_extrude(heart_thickness)
		flat_heart(heart_edge);

translate([-heart_edge/2,text_position,0])
	writecube(line_1_text,[heart_edge/2,heart_edge/2,heart_thickness/2],[heart_edge,heart_edge,heart_thickness+text_height/2*0.9],t=text_thickness,h=text_height,face = "top");

translate([-heart_edge/2,text_position-line_spacing,0])
	writecube(line_2_text,[heart_edge/2,heart_edge/2,heart_thickness/2],[heart_edge,heart_edge,heart_thickness+text_height/2*0.9],t=text_thickness,h=text_height,face = "top");
```


[User]
Hey, I'm working on a project to modify a grand piano's sustain pedal so it can be activated by a knee, instead of a foot. I need some OpenSCAD files to create the mounting brackets and rod guides.

Essentially, I need two main components: a clamp that attaches to the existing pedal frame and a support arm that holds the push-rod.

Here are the important dimensions for the clamp:

*   **Pedal Frame Depth:** This will be a customizable parameter. The provided file uses 44mm as an example, but I need to be able to change it.
*   **Pedal Frame Width:**  Again, this needs to be customizable. The example is 34mm.
*   **Push-Rod Diameter:** This will also be a parameter, with a range of about 4mm to 10mm. The example is 9.5mm.

The clamp needs to:

1.  Be a two-part clamp design, so it can be bolted onto the frame.
2.  Have bolt holes for two 4mm bolts to secure it around the pedal frame.
3.  Have a bolt hole to attach the push-rod support arm with a 5mm bolt.

The push-rod support arm needs to:

1.  Have guides to hold the push-rod, with enough space around the rod diameter.
2.  Have holes for the 5mm bolt to connect to the clamp, allowing for some adjustability. I was thinking multiple holes in a line.
3.  A design that will easily allow for various push-rod lengths.

I'm thinking the design should also consider using standard hardware like M4 and M5 bolts. I'm not sure what other libraries are common, so go with whatever you think is best for this sort of mechanical design. Maybe BOSL2 or something similar? It should be fairly modular, with the parameters specified earlier acting as driving variables that change the sizes of the bodies to be generated. I don't have much preference for the exact shape of the clamp and push-rod support arm, as long as they meet the specified needs. I'd prefer something that's easily printable too.

Could you generate the OpenSCAD code for this? I'm really looking forward to seeing what you come up with.

[Assistant]
Grand_Piano_Pedal_Mod_Push_Rod_Clamp.scad:
```

//Depth of the pedal frame in mm
PedFrameDepth=44;

//Width of the pedal fram in mm
PedFrameWidth=34;

//Diameter of push-rod in mm. Minimum of 4mm and maximum of 10mm reccommended.
PushRodDiameter=9.5;

/*[hidden]*/

PushRodRad=PushRodDiameter/2;

/*
Hardware for connecting support arm to clamp: 5mm x 40mm bolt + 5mm lock-nut

Hardware for clamp: two 4mm bolts longer than the frame depth by 10mm + two 4mm lock-nuts

!!! use a 4mm diameter or larger push-rod !!!

*/

$fn=20;

//main body for clamp
difference(){
	union(){
		cube([PedFrameWidth+6,PedFrameDepth+6,30],center=true);
		//cylinder to provide strength at base of support-arm
		translate([(PedFrameWidth+3)/2+4,-((PedFrameDepth+6)/2+3),0])cylinder(r=8,h=30,center=true);
		//blocks for bolts
		translate([-(((PedFrameWidth+6)/2)+5),0,0])cube([10,PedFrameDepth+6,30],center=true);

		translate([(((PedFrameWidth+6)/2)+8),0,-10])cube([16,(PedFrameDepth+6)/2,10],center=true);
	}

	//negative space to form clamp interior
	cube([PedFrameWidth+1,PedFrameDepth+1,32],center=true);

	//negative space to separate clamp into two pieces
	cube([PedFrameWidth+40,15,33],center=true);

	//hole for bolt to connect support-arm for push rod
	translate([(PedFrameWidth+6)/2+3,-((PedFrameDepth+6)/2+4),0])cylinder(r=3,h=32,center=true);

	//holes for clamp-bolts
	translate([-(((PedFrameWidth+6)/2)+5),0,10])rotate([90,0,0])cylinder(r=2.5,h=PedFrameDepth+8,center=true);
	translate([-(((PedFrameWidth+6)/2)+5),0,-10])rotate([90,0,0])cylinder(r=2.5,h=PedFrameDepth+8,center=true);
	translate([(((PedFrameWidth+6)/2)+11),0,-10])rotate([90,0,0])cylinder(r=2.5,h=PedFrameDepth,center=true);
}

//support-arm for push-rod mount

difference(){
	//main bar
	translate([-((PedFrameWidth)+24),0,-(15-((PushRodDiameter+6)/2))])cube([40,150,PushRodDiameter+6],center=true);

	//hole for push-rod
	translate([-((PedFrameWidth)+24),-(75-(PushRodRad+3)),-(15-((PushRodDiameter+6)/2))])rotate([0,90,0])cylinder(r=PushRodRad+0.75,h=42,center=true);

	//negative space to slide over support-arm connector
	translate([-((PedFrameWidth)+24),48,-(15-((PushRodDiameter+6)/2))])cube([32,150,PushRodDiameter+8],center=true);

	//negative space between push-rod guides
	translate([-((PedFrameWidth)+24),-75,-(15-((PushRodDiameter+6)/2))])cube([32,50,PushRodDiameter+8],center=true);

	//holes for connecting bolt
	translate([-((PedFrameWidth)+24),70,-(15-((PushRodDiameter+6)/2))])rotate([0,90,0])cylinder(r=3,h=42,center=true);
	translate([-((PedFrameWidth)+24),60,-(15-((PushRodDiameter+6)/2))])rotate([0,90,0])cylinder(r=3,h=42,center=true);
	translate([-((PedFrameWidth)+24),50,-(15-((PushRodDiameter+6)/2))])rotate([0,90,0])cylinder(r=3,h=42,center=true);
	translate([-((PedFrameWidth)+24),40,-(15-((PushRodDiameter+6)/2))])rotate([0,90,0])cylinder(r=3,h=42,center=true);
	translate([-((PedFrameWidth)+24),30,-(15-((PushRodDiameter+6)/2))])rotate([0,90,0])cylinder(r=3,h=42,center=true);
	translate([-((PedFrameWidth)+24),20,-(15-((PushRodDiameter+6)/2))])rotate([0,90,0])cylinder(r=3,h=42,center=true);
	translate([-((PedFrameWidth)+24),10,-(15-((PushRodDiameter+6)/2))])rotate([0,90,0])cylinder(r=3,h=42,center=true);
	translate([-((PedFrameWidth)+24),0,-(15-((PushRodDiameter+6)/2))])rotate([0,90,0])cylinder(r=3,h=42,center=true);
	translate([-((PedFrameWidth)+24),-10,-(15-((PushRodDiameter+6)/2))])rotate([0,90,0])cylinder(r=3,h=42,center=true);
	translate([-((PedFrameWidth)+24),-20,-(15-((PushRodDiameter+6)/2))])rotate([0,90,0])cylinder(r=3,h=42,center=true);
}

```


[User]
Hi there, I'm working on a project to modify a grand piano's sustain pedal so it can be activated by sliding your knee sideways, rather than pressing down with your foot. I've already got a design for some brackets and hinges using OpenSCAD, but I need to make this more parametric and easier to adjust.

Essentially, I need a set of parts that connect aluminum bars to the pedal mechanism, allowing for a pivoting motion. My current setup has some fixed dimensions, but I need these to be customizable.

Here's a breakdown of the specific parts I need and the parameters I'd like to control:

**Main Components:**

1.  **Rocker-Hinge Mount Brackets (Pair):** These will attach to the main pedal structure and house an axle for the rocker hinge. There should be two identical brackets, one mirrored, to be attached on either side of the pivot area.
2.  **Rocker Hinge:** This is the part that will slide over the aluminum bar, and is connected to the rocker-hinge mount brackets via an axle.

**Key Parameters:**

*   `BarWidth`: The width of the aluminum bar used (in mm).
*   `BarThickness`: The thickness of the aluminum bar used (in mm).
*   `MountBracketWidth`: The width of the mounting bracket, should be configurable in case of the need to mount on a wider or narrower area.
*    `MountBracketDepth`: The depth of the mounting bracket, should be configurable as well, to increase the sturdiness of the overall assembly.
*    `MountBracketHeight`: The height of the mounting bracket from the base.
*  `AxleDiameter`: The diameter of the axle that the rocker hinge will rotate on (in mm).
*  `AxleHoleTolerance`: The tolerance for the axle hole on the mount bracket.
*   `BoltHoleDiameter`: The diameter of the bolt holes for mounting the bracket (in mm).
*   `BoltHoleSpacing`:  The distance between the two bolt holes for mounting the brackets (in mm).
* `BarHoleTolerance`: The tolerance around the aluminum bar within the rocker hinge (in mm).
* `RockerHingeLength`: The overall length of the rocker hinge that slides over the aluminum bar.
*   `RockerHingeBoltHoleSpacing`: The distance between the two bolt holes on the rocker hinge (in mm).
* `RockerHingeBoltHoleDiameter`: The diameter of the bolt holes on the rocker hinge (in mm).
*   `WallThickness`: A general variable for controlling wall thickness of the parts.

**Design Details:**

*   **Rocker-Hinge Mount Brackets:**
    *   Each bracket should have a flat base for mounting, and a structure that can house an axle and provide a rigid mounting point for the rocker hinge.
    *   The brackets should be designed so that the axle hole is exactly where it needs to be for the rocker hinge to rotate correctly.
    *   The brackets need to have at least two bolt holes to secure the bracket to the frame of the piano.
    *   There needs to be a cut-away to allow for the other half of the mount bracket to be on the other side of the pivot point.

*   **Rocker Hinge:**
    *   The rocker hinge will slide over the aluminum bar and rotate on the axle held by the mount brackets.
    *   It needs to be secured using two bolts.
    *   It should be designed to have tight but smooth fit around the aluminum bar, using the `BarHoleTolerance`.
    *   There should be a hole for the axle.

I'm thinking that you could use the BOSL2 library, since I really like its structure for handling the parametric aspects of the design, and it might be very useful for setting up the overall assembly. The other thing is, could you add some comments to the code, so it's easy to understand and modify if needed?

Let me know if you need anything else!

[Assistant]
Grand_Piano_Pedal_Mod_rocker_hinge.scad:
```

//Width of the metal bar in mm
BarWidth=19;

//Thickness of the metal bar in mm
BarThickness=3;

/*[hidden]*/

/*
Use 4mm diameter nuts and bolts for all attachments! 4mm diameter screws also.
*/

$fn=20;

//1st half of the rocker-hinge mount bracket
translate([0,5,0])
difference(){

union(){
	//bottom plate
	cube([40,6,BarWidth+14],center=true);

	//structure for axle hole
	hull(){
		translate([0,12,-(((BarWidth+14)/2)-1.5)])cylinder(r=6,h=3,center=true);
		translate([0,2,-(((BarWidth+14)/2)-1.5)])cube([20,2,3],center=true);
	}
}

	//axle hole
	translate([0,12,-(((BarWidth+14)/2)-1.5)])cylinder(r=2.5,h=4,center=true);

	//cut-away for other half
	translate([0,3,3.5])cube([42,6.25,BarWidth+14],center=true);

	//screw holes
	translate([-10,0,2.5])rotate([90,0,0])cylinder(r=2.5,h=10,center=true);
	translate([10,0,2.5])rotate([90,0,0])cylinder(r=2.5,h=10,center=true);

}

//2nd half of the rocker-hinge mount bracket
rotate([0,0,180])
translate([0,5,0])
difference(){

union(){
	//bottom plate
	cube([40,6,BarWidth+14],center=true);

	//structure for axle hole
	hull(){
		translate([0,12,-(((BarWidth+14)/2)-1.5)])cylinder(r=6,h=3,center=true);
		translate([0,2,-(((BarWidth+14)/2)-1.5)])cube([20,2,3],center=true);
	}
}

	//axle hole
	translate([0,12,-(((BarWidth+14)/2)-1.5)])cylinder(r=2.5,h=4,center=true);

	//cut-away for other half
	translate([0,-3,3.5])cube([42,6.25,BarWidth+14],center=true);

	//screw holes
	translate([-10,0,2.5])rotate([90,0,0])cylinder(r=2.5,h=10,center=true);
	translate([10,0,2.5])rotate([90,0,0])cylinder(r=2.5,h=10,center=true);

}

//Rocker hinge that slides over bar

difference(){
	//main geometry
	union(){
		translate([-35,0,-(((BarWidth+14)/2)-13)])
		cube([BarThickness+7,40,BarWidth+7],center=true);
		hull(){
			translate([-35-(((BarThickness+7)/2)+6),0,-(((BarWidth+14)/2)-13)])
			cylinder(r=6,h=BarWidth+7,center=true);
			translate([-35-(((BarThickness+7)/2)-1.5),0,-(((BarWidth+14)/2)-13)])
			cube([3,15,BarWidth+7],center=true);
		}
	}

	//hole for bar
	translate([-35,0,-(((BarWidth+14)/2)-13)])
	cube([BarThickness+1,42,BarWidth+1],center=true);

	//holes for bolts
	translate([-35,13,-(((BarWidth+14)/2)-13)])rotate([0,90,0])
	cylinder(r=2.5,h=BarThickness+10,center=true);

	translate([-35,-13,-(((BarWidth+14)/2)-13)])rotate([0,90,0])
	cylinder(r=2.5,h=BarThickness+10,center=true);

	//hole for axle
	translate([-35-(((BarThickness+7)/2)+6),0,-(((BarWidth+14)/2)-13)])
	cylinder(r=2.5,h=BarWidth+9,center=true);
}
```


[User]
I'm looking to create a filament guide for my 3D printer, specifically a Rostock Max. The filament tends to scrape against the frame, and I'd like to create a guide to prevent that. I have a basic design in mind but need it to be parametric so I can easily adjust it.

Here's what I'm imagining:

The guide will have a base that sits on the printer's frame and a raised cylindrical hole for the filament to pass through. The base will be a rectangular block with a lip (flange) around the edges to make it easier to sit nicely on the printer. The hole will be centered within the block and should be slightly larger than the filament diameter to allow for free movement.

Here are the parameters I'd like to control:

*   `input_holesize`: A 3-element vector representing the base cube's x, y, and z dimensions *before* tolerance is applied.
*   `flangewidth`: The width of the flange/lip that extends from the base on all sides.
*   `flangeheight`: The height of the flange/lip.
*   `tolerance`: A tolerance value to add to the filament hole diameter and *subtract* from the base and hole dimensions.
*  `filamentdiameter`: The diameter of the filament to guide.

The hole dimensions should be derived from the base size by subtracting the `tolerance` value from the x and y of `input_holesize`, and the z dimension should match the z dimension of the input `holesize`. The overall shape will be a difference between a union of the base with flange and the filament guide hole. I'd also like a tall enough hole so that the filament won't come out the top easily.

Could you generate an OpenSCAD file (or files if it makes sense) for this? I'd prefer not to use any external libraries if possible.

[Assistant]
filament_guide_hole.scad:
```
tolerance = .25;
input_holesize = [15,6.75,7];
flangewidth = 3;
flangeheight = 1.25;
holesize = [input_holesize[0]-tolerance,input_holesize[1]-tolerance,input_holesize[2]];
tolerance = .25;
flange = [input_holesize[0]+flangewidth, input_holesize[1]+flangewidth, flangeheight];
filamentdiameter = 2.2;

difference(){
	union(){
		translate([-flangewidth/2,-flangewidth/2,0])cube(flange);
		translate([0,0,flangeheight-tolerance])cube(holesize);
	}
	translate([holesize[0]/2, holesize[1]/2, 0])cylinder(r=filamentdiameter/2+tolerance, h=holesize[2]+flangeheight*3, $fa=1, $fs=1);
}
```


[User]
Hi! I'm looking to create a parametric OpenSCAD model of the Herschel enneahedron, as described in Christian Perfect's work and the article on Aperiodical. I've included the source code I found online as a reference, but I'd like to have a model that's easier to customize.

Essentially, I want to be able to control the overall size of the enneahedron, as well as its shape. In the original code, the 'stretch' variable seems to control how much the figure is stretched along a certain axis. I'd like to keep this behavior and the variable, but I would like to also be able to control the overall aspect ratio as well as the size so that I can make the enneahedron wider or taller, independently of the existing stretching variable. It would also be great to have the ability to control the number of sides of the basic shape – maybe a parameter ‘base_sides’, which would default to 3 (since the original is based on a triangle) but could be higher to generate something similar, but more complicated.

Also, I'm hoping you can generate a model where the faces are separate, but fit together using a peg and hole type connection. Each face should have a peg that protrudes outwards, and the corresponding face should have a hole for that peg. That way I can print each face separately and assemble it later.

For libraries, I think I'd be interested in using BOSL2 for some of the more complicated operations and maybe BOSL for more basic stuff, but feel free to suggest other approaches or alternative libraries if you think they might work better.

Finally, I think it'd be nice if there were a test model that demonstrates the face assembly, so you don’t need to create a full model. If that test model is parameterized and can be used with different number of sides that would be even better.

[Assistant]
perfect_herschel.scad:
```
// A Perfect Herschel enneahedron
//
// Bill Owens, Feb 2014
//   released into the public domain
//
// This is an OpenSCAD model of the Herschel enneahedron created by Christian Perfect <http://checkmyworking.com/>
// Full description and a paper model at <http://aperiodical.com/2013/10/an-enneahedron-for-herschel/>
//
// Setting size=70 and stretch=1 produces a model the same size and proportion as the paper model in the original article.

// parameters for Thingiverse Customizer
//

// tip-to-tip length (mm)
size = 70;

// shape of the polyhedron
stretch = 1;

/* [Hidden] */
h1 = stretch/2;
h2 = stretch*2/3;

scale(size) rotate([90,0,0]) polyhedron(
    points = [
    [1/2,0,-h1],    		//v0
    [0,0,0],					//v1
    [1/2,0,h1],				//v2
    [1,0,0],					//v3
    [1/2,sqrt(3)/6,-h2],		//v4
    [3/4,sqrt(3)/4,-h1],		//v5
    [3/4,sqrt(3)/4,h1],		//v6
    [1/2,sqrt(3)/6,h2],		//v7
    [1/4,sqrt(3)/4,h1],		//v8
    [1/4,sqrt(3)/4,-h1],		//v9
    [1/2,sqrt(3)/2,0]],		//v10
    triangles = [
    [1,2,3],
    [1,3,0],
    [2,7,3],
    [3,7,6],
    [0,3,4],
    [3,5,4],
    [3,6,10],
    [3,10,5],
    [6,7,10],
    [7,8,10],
    [4,5,10],
    [4,10,9],
    [1,10,8],
    [1,9,10],
    [1,8,7],
    [1,7,2],
    [1,4,9],
    [1,0,4]]);

```


[User]
I'm looking to create some customizable drawer dividers using OpenSCAD, and I need your help with the code. The basic idea is a grid of intersecting walls that can be adjusted to fit different drawer sizes.

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

*   **`height`**: The height of the dividers. I'd like to be able to set this in millimeters.
*   **`width`**: The overall width of the drawer the dividers will fit into, also in millimeters.
*   **`depth`**: The overall depth of the drawer the dividers will fit into, again in millimeters.
*  **`row_dividers`**: The number of dividers running along the depth of the drawer.
*   **`column_dividers`**: The number of dividers running along the width of the drawer.
*   **`fillet_diam`**: The diameter of the fillets where the dividers intersect, in millimeters. This will be used to create a rounded joint.
*   **`wall_thickness`**: The thickness of the divider walls in millimeters.

The dividers should be laid out evenly within the specified width and depth. For example, if I have `row_dividers=2`, the dividers should create three rows. Likewise for column dividers. I need the dividers to have a small fillet where they intersect to strengthen the corners.

The code should generate a single object composed of the intersecting walls and fillets. Please make sure that the code creates a closed manifold for 3D printing purposes.

I'm not concerned about any libraries, or additional file requirements, unless you think it will help you create the code. If it makes sense to create multiple files, that's fine, too. Thanks!

[Assistant]
drawer_dividers.scad:
```

height=12.7;				//divider height
width=50.8;			//container width
depth=50.8;			//container depth
row_dividers=4;		//# row dividers
column_dividers=4;	//# column dividers
fillet_diam=1.5;	   //fillet diameter
wall_thickness=0.5;		//wall thickness

ff=0.001*1;				//fudge factor to create a closed manifold

union()
{

//// Dividers

	for(j = [0:row_dividers - 1])
	{
		translate([0,(depth/(row_dividers+1))+j*(depth/(row_dividers+1)),0]) cube([width,wall_thickness,height]);
	}

	for(k = [0:column_dividers - 1])
	{
		rotate([0,0,90]) translate([0,-(width/(column_dividers+1))-k*(width/(column_dividers+1)),0]) cube([depth,wall_thickness,height]);
	}

//// Fillets

	for(m = [0:column_dividers - 1])
	{
		for(n = [0:row_dividers - 1])
		{
			//// Upper right fillet
			translate([(width/(column_dividers+1))+m*(width/(column_dividers+1))-ff,(depth/(row_dividers+1))+n*(depth/(row_dividers+1))+wall_thickness-ff,0]) fillet();

			//// Upper left fillet
			translate([(width/(column_dividers+1))+m*(width/(column_dividers+1))-wall_thickness+ff,(depth/(row_dividers+1))+n*(depth/(row_dividers+1))+wall_thickness-ff,0]) rotate([0,0,90]) fillet();

			//// Lower left fillet
			translate([(width/(column_dividers+1))+m*(width/(column_dividers+1))-wall_thickness+ff,(depth/(row_dividers+1))+n*(depth/(row_dividers+1))+ff,0]) rotate([0,0,180]) fillet();

			//// Lower right fillet
			translate([(width/(column_dividers+1))+m*(width/(column_dividers+1))-ff,(depth/(row_dividers+1))+n*(depth/(row_dividers+1))+ff,0]) rotate([0,0,270]) fillet();

		}
	}

};

//////////// module definitions ///////////////////////

module fillet()
{
	difference()
	{
		cube([fillet_diam/2,fillet_diam/2,height]);
		translate([fillet_diam/2,fillet_diam/2,0]) cylinder(h=(height+1)*2,r=fillet_diam/2,center=true,$fn=20);
	}
};
```


[User]
Okay, I need a new fan mount for my MakerGear M2 3D printer. I'm currently using a clamp design that attaches to the gantry, but it has some issues with fragility and cooling performance. I'd like a parametric design that's more robust, and also something that I can potentially use to mount other things later besides just a fan.

Here are the details:

**Overall Structure:**

*   The mount should clamp onto the corner of the M2's gantry, specifically on the X-motor side.
*   It should be parametric, allowing adjustment for different gantry thicknesses and clamp clearances.
*   Instead of printed fan prongs, I want to use screw holes. This should be customizable to different screw sizes.
*   It should have a mounting face that can accept different types of attachments, not just fans.
*   The design must ensure there's no interference with the extruder during its full X-axis travel.

**Specific Parameters:**

*   **`wall_thickness`:** The thickness of the material used for the mount (default to 3mm).
*   **`clamp_clearance`:** Extra clearance for the clamp; I need to be able to adjust this to get a good fit on my printer's gantry (default to 0.1mm).
*   **`clamp_x_length`:** The length of the clamp along the X-axis (front-to-back on the printer, default to 50mm).
*   **`clamp_z_length`:** The length of the clamp along the Z-axis (left-to-right on the printer, default to 40mm).
*   **`lip_depth`:** How far the clamp extends inward from the edge of the gantry (default to 5mm).
*   **`clamp_gap`:** Thickness of the gantry platform (default to 6.5mm).
*   **`fan_width`:** Exterior width of the fan. Since I'm initially using an 80mm fan, this is 80mm.
*   **`fan_offset`:** How far off from the front face of the clamp the fan sits (default to 2mm).
*   **`fan_screw_diameter`:** Diameter of the screw holes for mounting the fan (default to 4.3mm).
*    **`fan_screw_clearance`**: extra clearance for screw holes (default to 0.2mm)
*   **`fan_depth`:** Thickness of the fan (default to 25mm).
*   **`fan_depth_extra`**: how much the printed fan pegs extend beyond the face of the fan (should not be used anymore, default 2mm).
*   **`fan_screw_centers_length`:** The center-to-center distance between the fan mounting screws (default to 71.5mm).
*   **`screw_size`**: The nominal diameter of the mounting screw (e.g. 6 for a 6-32 screw), used for generating the diameter of the mounting holes, should be configurable in the OpenSCAD design as a string variable.

**Mounting Face:**

*   The mounting face (where the fan/other attachments go) should be a flat face, configurable for offset from the clamp.
*   The screw holes for the fan should be on this mounting face.
*   The mounting face should be a solid rectangle that's wide enough to mount a fan.

**Clamp Mechanism:**

*   The clamp should be a simple rectangular shape with an internal cut-out to fit over the gantry corner.

**Libraries:**
* I'd prefer to not use any external libraries if possible.

**Output:**
* I'd like a single .scad file that generates the mount. There should be separate modules for the clamp and the entire mount.

I'd like to be able to easily change these parameters in the code, and I need to be able to adjust the clamp fit (using `clamp_clearance`). I'd also like to be able to easily change the screw size by setting the `screw_size` variable. It should also be easy to swap the mounting surface. I'd like the generated geometry to take into account the thickness of the material. Also make sure to add some slop to avoid coincident faces.

[Assistant]
fan-mount.scad:
```
/* [General] */
layout = "mount"; // [mount, clamptest]
wall_thickness = 3;

/* [Clamp Dimensions] */
// Extra clearance for the clamp. Print off the clamp test first to see what is right for you.
clamp_clearance = .1;
// X axis is front to back on the M2.
clamp_x_length = 50;
// Z is left to right across the M2. 40mm is about as far as you can go before the extruder carriage will clonk into the mount at the end of its travel.
clamp_z_length = 40;
// How far the clamp should extend inward from the edge. 5mm is about as far as you can go before contacting the V rail.
lip_depth = 5;
// Thickness of the gantry platform. You should not have to change this; edit clamp_clearance instead.
clamp_gap = 6.5;

/* [Fan Dimensions] */
// Exterior width of the fan.
fan_width = 80;
// How far off from the front face of the clamp you want to offset the fan by.
fan_offset = 2;
fan_screw_diameter = 4.3;
fan_screw_clearance = .2;
fan_depth = 25;
// Extra length for the fan pegs to extend beyond the face of the fan.
fan_depth_extra = 2;
fan_screw_centers_length = 71.5;

/* [Hidden] */
fan_screw_border = (fan_width - fan_screw_centers_length - fan_screw_diameter) / 2;
fan_screw_center_offset = fan_screw_border + fan_screw_diameter/2;
slop = .1; // for avoiding coincident faces

module clamp(h, c = clamp_clearance) {
  linear_extrude(height = h)
  difference() {
    translate([-wall_thickness, -wall_thickness])
    square([clamp_gap + c + 2*wall_thickness, lip_depth + wall_thickness]);

    square([clamp_gap + c, lip_depth + slop]);
  }
}

module screw_insert() {
  rotate([180, 0, 0])
  cylinder(h = fan_depth + fan_depth_extra, r = fan_screw_diameter/2 - fan_screw_clearance);
}

module mount() {
  right_screw_x = -wall_thickness - fan_offset - fan_screw_center_offset;
  screws_y = wall_thickness - fan_screw_center_offset;

  difference() {
    union() {
      // x clamp (front to back)
      rotate([-90, 0, -90])
      translate([0, 0, -wall_thickness])
      clamp(clamp_x_length + wall_thickness);

      // y clamp (left to right)
      rotate([180, 0, 90])
      translate([-(clamp_gap + clamp_clearance), 0, -wall_thickness])
      clamp(clamp_z_length + wall_thickness);

      // fan mount
      translate([-wall_thickness - fan_offset - fan_width, -clamp_gap - clamp_clearance - wall_thickness])
      cube([fan_offset + fan_width, clamp_gap + clamp_clearance + 2 * wall_thickness, wall_thickness]);

      /*
      translate([right_screw_x, screws_y, 0])
      screw_insert();

      translate([right_screw_x - fan_screw_centers_length, screws_y, 0])
      screw_insert();
      */
    }
    // Use 6-32 or 8-32 1 1/4" screws instead of printed holders
    translate([right_screw_x, screws_y, -slop])
    cylinder(h = wall_thickness + 2*slop, r = fan_screw_diameter/2, $fn = 20);

    translate([right_screw_x - fan_screw_centers_length, screws_y, -slop])
    cylinder(h = wall_thickness + 2*slop, r = fan_screw_diameter/2, $fn = 20);
  }
}

module clamp_test() {
  for (i = [0 : 3]) {
    translate([15 * i, 0]) clamp(10, -.1 + i * .1);
  }
}

if (layout == "clamptest") clamp_test();
else mount();

/*
module fan() {
  difference() {
    cube([fan_width, fan_width, fan_depth]);

    translate([fan_screw_center_offset, fan_screw_center_offset + fan_screw_centers_length, -slop])
    cylinder(h = fan_depth + 2 * slop, r = fan_screw_diameter/2);

    translate([fan_screw_center_offset + fan_screw_centers_length, fan_screw_center_offset + fan_screw_centers_length, -slop])
    cylinder(h = fan_depth + 2 * slop, r = fan_screw_diameter/2);
  }
}

%translate([-wall_thickness - fan_offset - fan_width, wall_thickness - fan_width, -fan_depth])
fan();
*/
```


[User]
I need a tool to make square vol-au-vents, like a cookie cutter but with an option for an inner cut. I'd like to be able to control the overall size of the cutter, how thick the cutting walls are, and how far the inner cutter is from the outer edge. The inner cutter should also be slightly shorter than the outer cutter. And it also needs a frame at the top to make it easier to handle.

Here are the specific things I would like to control:

*   **Has_Inner_Cutter**: A boolean option to choose whether there is an inner cutter or not.
*   **Cutter_Thickness**: The thickness of the cutting edges.
*   **Outer_Side**: The length of the side of the outer square.
*   **Outer_Height**: The height of the outer cutting edge.
*   **Inner_Side_Difference**: How much smaller the inner cutter's side is from the outer cutter's side (e.g., if this is 15, the inner cutter will have 15mm less on each side - so 30mm shorter in total).
*   **Inner_Height_Difference**: The difference in height between the outer cutter and the inner cutter.
*   **Frame_Thickness**: How thick the top frame/grip is.
*   **Frame_Flange**: The amount the frame extends past the cutter on each side.

I'd like this as a parametric OpenSCAD file, please. I won't be using any external libraries, I just need a single .scad file, please.

[Assistant]
vol-au-vent_Cutter.scad:
```
// Copyright (c) 2013, 2014 by Jean-Louis Paquelin (jlp6k).
// This work is licensed under the Creative Commons Attribution
// Partage dans les Mêmes Conditions 3.0 France License.
// To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/3.0/fr/
// CC-BY-SA

// Created 2013-11-29
// Last modified 2014-02-15

// dimensions are set in millimeters

Has_Inner_Cutter = "yes"; // [yes:Output will have an inner cutter, no: simple cookie cutter]

Cutter_Thickness = 0.5;

Outer_Side = 75;
Outer_Height = 23;

Inner_Side_Difference = 15;
Inner_Height_Difference = 3;

Frame_Thickness = 3;
Frame_Flange = 2;

union() {
    // grip / frame
    translate([0, 0, -(Outer_Height / 2) - (Frame_Thickness / 2) + (Frame_Thickness / 10)])
        difference() {
            cube([Outer_Side + Frame_Flange * 2,
                  Outer_Side + Frame_Flange * 2,
                  Frame_Thickness],
                  center = true);

            if(Has_Inner_Cutter == "yes") {
                cube([Outer_Side - Inner_Side_Difference * 2 - Cutter_Thickness * 2 - Frame_Flange * 2,
                      Outer_Side - Inner_Side_Difference * 2 - Cutter_Thickness * 2 - Frame_Flange * 2,
                      Frame_Thickness + 1],
                      center = true);
            } else {
                cube([Outer_Side - Cutter_Thickness * 2 - Frame_Flange * 2,
                      Outer_Side - Cutter_Thickness * 2 - Frame_Flange * 2,
                      Frame_Thickness + 1],
                      center = true);

            }
        }

    // outer cutter
    difference() {
        cube([Outer_Side,
              Outer_Side,
              Outer_Height],
              center = true);
        cube([Outer_Side - Cutter_Thickness * 2,
              Outer_Side - Cutter_Thickness * 2,
              Outer_Height + 10],
              center = true);
    }

    if(Has_Inner_Cutter == "yes") {
        // inner cutter
        translate([0, 0,  -Inner_Height_Difference / 2])
            difference() {
                cube([Outer_Side - Inner_Side_Difference * 2,
                      Outer_Side - Inner_Side_Difference * 2,
                      Outer_Height - Inner_Height_Difference],
                      center = true);
                cube([Outer_Side - Inner_Side_Difference * 2 - Cutter_Thickness * 2,
                      Outer_Side - Inner_Side_Difference * 2 - Cutter_Thickness * 2,
                      Outer_Height - Inner_Height_Difference + 10],
                      center = true);
            }
    }
}

```