[User]
I'd like a customizable coat rack peg designed in OpenSCAD. The peg should be designed to fit into a pre-drilled hole in a coat rack.

Here are the main design features:

*   **Base:** The peg will have a flared base that will be inserted into the hole, essentially acting like a wedge to keep it in place. The design should allow for this base to be customizable by specifying both the hole diameter it needs to fit into, as well as the depth of the hole.
*   **Optional Screw Hole:** I'd also like to have an optional hole in the center of the base which could accept a screw. This would allow the peg to be further secured if needed.
*   **Peg Body:** The main body of the peg that extends outwards from the coat rack should be customizable by length. I would like it to transition from the flared base in a curved manner.
*   **Rounded Tip:** The tip of the peg needs to be a round ball, or sphere, to prevent coats and other items from easily slipping off. The ball should be the same diameter as the base of the peg, before the flare.

I'd like the following parameters to be configurable:

*   `hole_depth`: Depth of the hole the base will fit into.
*   `hole_diameter`: Diameter of the hole the base will fit into.
*   `peg_length`: Length of the peg that extends from the hole.

I do not need to specify any particular libraries (e.g. MCAD, BOSL, BOSL2, dotSCAD, NopSCADlib, BOLTS) as the design should be simple enough to be done without them.

[Assistant]
Coat_Rack_Peg.scad:
```
/**
 * Customizable coat rack pegs that fit into holes in the rack.
 */

// The depth of the hole that the peg fits into.
hole_depth = 12;

// The diameter of the hole that the peg fits into.
hole_diameter = 12.5;

// The total length of the visible portion of the peg.
peg_length = 50;

module coat_rack_peg(hole_depth=12, hole_diameter=12.5, peg_length=50) {
	$fs = 1;
	$fa = 1;

	p0=[hole_diameter / 2 * 1.1,0];
	p1=[hole_diameter / 2 * .5, ( peg_length / 2 )];
	p2=[hole_diameter / 2 * .5, peg_length];

	difference() {
	    cylinder(r1=hole_diameter / 2 * .95, r2 = hole_diameter / 2 * 1.1, h = hole_depth);
	    cylinder(r=1.5, h=hole_depth);
	}

	translate([0, 0, hole_depth]) {
	    translate([0, 0, peg_length]) sphere(r=hole_diameter / 2);
	}

	translate([0, 0, hole_depth]) {
	    bezier_solid( p0, p1, p2, steps=20);
	    translate([0, 0, peg_length]) sphere(r=hole_diameter / 2);
	}
}

module bezier_solid( p0, p1, p2, steps = 5 ) {
    stepsize1 = (p1-p0)/steps;
    stepsize2 = (p2-p1)/steps;

    rotate_extrude() {
        for (i=[0:steps-1]) {
            point1 = p0+stepsize1*i;
            point2 = p1+stepsize2*i;
            point3 = p0+stepsize1*(i+1);
            point4 = p1+stepsize2*(i+1);
            bpoint1 = point1+(point2-point1)*(i/steps);
            bpoint2 = point3+(point4-point3)*((i+1)/steps);
            polygon(
                points=[
                   [0, bpoint1[1]],
                   bpoint1,
                   bpoint2,
                   [0, bpoint2[1]]
                ]
            );
        }
    }
}

coat_rack_peg(hole_depth=hole_depth, hole_diameter=hole_diameter, peg_length=peg_length);
```


[User]
I'm looking to design a parametric hinge in OpenSCAD, and I'd like to have quite a bit of control over its dimensions and structure. I've got some ideas from an existing design, but I want to start from scratch and have a file with similar functionality, but with the freedom of a fresh start.

Here’s what I need:

**Core Hinge Structure:**

*   **Links:** The hinge is composed of multiple links connected in series.
    *   Each link needs a `LinkRadius` (radius of the circular section), and a `LinkLength` (the length of the link itself).
    *   There's an `InnerShaft` which should create a hollow section inside each link, and an `InnerTolerance` to control the space between the shaft and the outer link body.
    *   The links are spaced by a `Spacing` distance.
    *   I need a `LinkNumber` to determine how many links are in the hinge.
*   **Alternating Solid and Hollow Links:** The design needs to alternate between solid links and hollow links. Only the hollow links need to accommodate the inner shaft with tolerance.
*   **End Cap:** When the number of links (`LinkNumber`) is even, I want a small end cap, with a length that is 1/10 of the `LinkLength`. This needs to be a circular extrusion similar to the link itself. It should be a solid link. This cap needs to sit at the total length of all of the links and their associated spaces.

**Tabs/Mounting Points:**

*   **Tab Lengths:** I need a way to attach the hinge to other objects using tabs. I need a `TabLength0` to control the length of the first tab, and `TabLength` for the length of all subsequent tabs.
*   **Tab Thickness:** Tabs should have a customizable `TabThickness`.
*   **Holes:** There needs to be a hole for mounting screws on each tab, each with a `HoleDiameter`.
    *   The holes need to have custom offset parameters, `HoleOffset0` for the first tab, and `HoleOffset` for all the other tabs.
*   **Long Tabs:** I want an option `LongTab` to determine if the tabs should be shorter and sit on both sides of each individual link or if the tabs should be two longer extensions at the end of the hinge. When the `LongTab` is `0`, there should be smaller tabs extending from the ends of the links, and when `LongTab` is `1`, there should only be the tabs on each end.

**Overall Design Requirements:**

*   **Parametric Design:** All of these parameters should be easily modifiable, and the design should adjust accordingly.
*   **Structure:** The design should be structured in a way that reduces the amount of bridging required when 3D printing.
*   **Clear Structure:** The OpenSCAD code should be well-commented and easy to understand.

Can you create an OpenSCAD file (or files) that satisfies all these requirements?

[Assistant]
FinalHinge.scad:
```
/*[Link]*/
LinkRadius = 6;
//This is the length of each link, consider that this is the distance that your printer needs to be able to bridge.
LinkLength = 15;
//The thicker, the sturdier the overall hinge. Obiously InnerShaft + Inner Tolerance should never be bigger than Link Radius.
InnerShaft = 3.5;
//Depends on your printer/material, .6 worked well for me (this is the distance between the inner shaft and the inner layers of the links)
InnerTolerance = .6;
//Spacing between the links, i found .6mm to give good results
Spacing = .6;
//LinkNumber * LinkLength = the total length of your hinge.
LinkNumber = 5;
/*[Tabs]*/
TabLength0 = 25;
TabLength = 25;
TabThickness = 3;
HoleDiameter=4;
HoleOffset0=0;
HoleOffset=0;
//Do you want 2 long tabs or multiple smaller ones? 0=Yes, 1=No
LongTab = 0;

TotalLength = (LinkNumber*LinkLength)+(Spacing*(LinkNumber-1));

module solidHinge(LinkRadius,LinkLength,TabLength,TabThickness){
    union(){
        rotate([90,0,0]) linear_extrude(height=LinkLength,center=true) translate([0,LinkRadius,0]) circle(LinkRadius);
        translate([TabLength/2,0,TabThickness/2])
        difference(){cube([TabLength,LinkLength,TabThickness],center=true);
            translate([LinkRadius/2+HoleOffset,0,0])cylinder(h=TabThickness,r=HoleDiameter/2,center=true);
        }
    }
}

module hollowHinge(LinkRadius,LinkLength,TabLength,TabThickness,Spacing,InnerTolerance,InnerShaft){
    union(){
        difference(){
            union(){
                rotate([90,0,0]) linear_extrude(height=LinkLength,center=true) translate([0,LinkRadius,0]) circle(LinkRadius);
                translate([TabLength0/2,0,TabThickness/2])
                difference(){cube([TabLength0,LinkLength,TabThickness],center=true);
                translate([LinkRadius/2+HoleOffset0,0,0])cylinder(h=TabThickness,r=HoleDiameter/2,center=true);
                }
            }
            rotate([90,0,0]) linear_extrude(height=LinkLength+Spacing,center=true) translate([0,LinkRadius,0]) circle(InnerShaft+InnerTolerance,center=true);
        }
        rotate([90,0,0]) linear_extrude(height=LinkLength+(Spacing*2),center=true) translate([0,LinkRadius,0]) circle(InnerShaft,center=true);
    }
}

module CompleteHinge(LinkRadius,LinkLength,TabLength,TabThickness,Spacing,InnerTolerance,InnerShaft,LongTab,LinkNumber){

    union(){
        for(a=[0:LinkNumber-1]){
            if(a%2!=0){
                union(){
                mirror(1,0,0) translate([0,(LinkLength+(Spacing))*a,0]) hollowHinge(LinkRadius,LinkLength,TabLength,TabThickness,Spacing,InnerTolerance,InnerShaft);
                   if(LongTab==0 && a!=LinkNumber-1){
                       if(a==1){
                       translate([-TabLength0/2-LinkRadius/2,0,TabThickness/2]) cube([TabLength0-LinkRadius,LinkLength+(Spacing*2),TabThickness],center=true);
                       }
                    translate([-TabLength0/2-LinkRadius/2,(LinkLength+(Spacing))*(a+1),TabThickness/2]) cube([TabLength0-LinkRadius,LinkLength+(Spacing*2),TabThickness],center=true); }
                }
            }
            else{
                union(){
                translate([0,(LinkLength+(Spacing))*a,0]) solidHinge(LinkRadius,LinkLength,TabLength,TabThickness);
                    if(LongTab==0 && a!=LinkNumber-1){
                    translate([TabLength/2+LinkRadius/2,(LinkLength+(Spacing))*(a+1),TabThickness/2]) cube([TabLength-LinkRadius,LinkLength+(Spacing*2),TabThickness],center=true); }
                }
            }
            if(LinkNumber%2==0){
                if(a==LinkNumber-1){
                    translate([0,((LinkLength+(Spacing))*a)+(LinkLength/2)+Spacing+(LinkLength/20),0]) rotate([90,0,0]) linear_extrude(height=LinkLength/10,center=true) translate([0,LinkRadius,0]) circle(LinkRadius);
                }
            }
        }
        /*if(LongTab==0){
            color("blue",1) translate([(TabLength+LinkRadius)/2,(TotalLength/2)-(LinkLength/2)]) linear_extrude(height=TabThickness)square([(TabLength-LinkRadius),TotalLength],center=true);
            color("blue",1) color("blue",1) translate([-(TabLength0+LinkRadius)/2,(TotalLength/2)-(LinkLength/2)]) linear_extrude(height=TabThickness)square([(TabLength0-LinkRadius),TotalLength],center=true);
        }*/
    }

}

CompleteHinge(LinkRadius,LinkLength,TabLength,TabThickness,Spacing,InnerTolerance,InnerShaft,LongTab,LinkNumber);
//hollowHinge(LinkRadius,LinkLength,TabLength,TabThickness,Spacing,InnerTolerance,InnerShaft);
```


[User]
I'd like to design a vase, but I want to be able to control a few key things parametrically. The base of the vase should start as a circle, then it should be extruded upwards, and simultaneously twisted and scaled down as it goes up. I want to specify the height of the vase, the radius of the circle at the base, the total twist angle, and the scale factor for the top compared to the bottom. I also want to control the number of sides that the circle approximation has.

Ideally, this would all be done using a `linear_extrude` command with the appropriate parameters, and I want to ensure the 'vase' print setting works with the design, so using slices in the `linear_extrude` and not a general `rotate_extrude` is key. Please output a single `.scad` file with these parameters all controlled by variables defined at the top of the file, and make sure to use the `linear_extrude` parameters `twist`, `scale`, `slices`, and `$fn`.

[Assistant]
vasa222.scad:
```
num_corners=4;
height=100;
base_radius=40;
angle_twist=-90;
top_scale=.6;
linear_extrude(height = height, center = false, convexity = 50, twist = angle_twist,scale=top_scale,$fn=num_corners,slices=height)
 circle(base_radius);
```


[User]
Okay, I'd like to create a customizable fractal object based on recursive subdivision of quadrilaterals. I'm envisioning a kind of growing, organic-looking form. The provided code does a decent job, but I want to make it more controllable and easier to use, plus I'd like the output to be a bit smoother.

Here are the core features I need, and the way that they're implemented in the reference code. I'd like to request that you build these features in.

*   **Initial Quadrilateral:** I want to define the initial quadrilateral by specifying the four corner points (p0, p1, p2, p3). Currently these are hardcoded. I'd like to specify these as module parameters.
*   **Extrusion Amount:** There should be a way to extrude each quad towards the center, with an extrusion amount 'e'. This is currently a variable that is multiplied by another factor. I'd like to keep this as a user-defined parameter of the module with a default value, and have the sub-divisions work off the base value.
*   **Scaling Factor:** Each level of recursion should also scale the newly created quads by a user defined amount, 's', similar to the current "Scale" variable.
*   **Max Recursion Depth:** The depth of the recursion should be configurable with 'MaxRecursion'. I would also like this to be configurable.
*   **Edge Extrusion Scale:** Each recursive call should also scale its extrusion by a factor ('ekoff').
*   **Top Extrusion Scale:** Each recursive call should also have an extrusion factor for the top or 'center' quad of the recursive step ('etopkoff').
*   **Smoothing:** The current code uses `polyhedron` which results in sharp edges. I'd like the subdivisions to use convex hulls to provide smooth transition between layers of quads.

Here's a bit of extra information from the reference code:

*   The reference code calculates a normal using `p2n`, and uses it to extrude the edges and new quad.
*   The code scales the extrusion of each subdivision by a factor. I'd like to keep this functionality.
*   The reference code uses a complex ratio to determine whether to subdivide. I'd like to replace this with a minimum subdivision size, and depth limit which are used to determine whether to subdivide or not.
*   The code uses a somewhat arbitrary `polyarea` function. I'm fine with using the library version if one exists. I would like to request the use of the BOSL2 library and associated functions (like hull_2d, polyarea).

In short, I'd like the code to generate smoothly connected fractal geometry, based on a user-specified quad, and controlled with parameters for extrusion, scale, recursion depth, and extrusion factors. I'd also like to simplify the subdivision test using a max size and depth. I will provide the initial vertices.

Could you generate the OpenSCAD code to do that, using BOSL2 for the hull and area functionality?

[Assistant]
SubDivFractal.scad:
```
//**********************************************************************
//**********************************************************************
//**********************************************************************
MaxRecursion=4;//[1:8]
Extrude=2;//[0:0.01:3]

Scale=0.6;//[0:0.01:2]
ekoff=-0.25;//[-0.5:0.01:2]
etopkoff=0.5;//[-0.5:0.01:2]

/* [Hidden] */
// test code
p0=[0,0,0];
p1=[15,0,0];
p2=[15,15,0];
p3=[0,15,0];

C0=(un(rndc())+[2,0,0])/2;
C1=(un(rndc())+[2,2,0])/2;
C2=(un(rndc())+[0,2,2])/2;
quad(p0,p1,p2,p3,Extrude*15,Scale);
quad(p3,p2,p1,p0,-0.64,Scale/2);
//scale(4/(len3(p0)+len3(p1)+len3(p2)+len3(p3)))translate (-(p0+p1+p2+p3)/4){
////tri2quad(p0,p2,p1,E,S);
////tri2quad(p0,p1,p3,E,S);
////tri2quad(p1,p2,p3,E,S);
////tri2quad(p2,p0,p3,E,S);
//}

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

module quad(p0,p1,p2,p3,e=0.5,s=0.5,i=0){
    c=(p0+p1+p2+p3)/4;
    n=un(p2n(p0,p1,p3)+p2n(p3,p1,p2));
 ratio=min(min(len3(p0-p1),len3(p1-p2)),min(len3(p2-p3),len3(p3-p0)))/max(max(len3(p0-p1),len3(p1-p2)),max(len3(p2-p3),len3(p3-p0)))+1/(sqrt(i*3+1));

    if (ratio>0.5&&i<MaxRecursion&&abs(e)>0.015 &&(polyarea(p0,p1,p3)+polyarea(p3,p1,p2))>1){
        ep0=lerp(c+n*e,(p0+n*e), s);
        ep1=lerp(c+n*e,(p1+n*e),s);
        ep2=lerp(c+n*e,(p2+n*e),s);
        ep3=lerp(c+n*e,(p3+n*e),s);
       quad (p0,p1,ep1,ep0,e*ekoff,s,i+1);
       quad (p1,p2,ep2,ep1,e*ekoff,s,i+1);
       quad (p2,p3,ep3,ep2,e*ekoff,s,i+1);
       quad (p3,p0,ep0,ep3,e*ekoff,s,i+1);
       quad (ep0,ep1,ep2,ep3,e*etopkoff,s,i+1);
        }
    else{
    color(un((C0*abs(n[0])+C1*abs(n[1])+C2*abs(n[2])+[1,1,1]*abs(n[2]))/4))  polyhedron([p0,p1,p2,p3],[[0,1,2],[0,2,3]]);
       }

    }

module tri2quad(p0,p1,p2,p3,e=0.5,s=0.5,){
    p0p1=(p0+p1)/2   ;//edge
    p1p2=(p1+p2)/2   ;//edge
    p2p0=(p2+p0)/2   ;//edge
 n=un(p2n(p0,p1,p2));
    size=polyarea(p0,p1,p2);
c=((p0+p1+p2)/3)+n*sqrt(size*2)/2;

quad(p0,p0p1,c,p2p0,e,s);
 quad(p1,p1p2,c,p0p1,e,s);
 quad(p2,p2p0,c,p1p2,e,s);
}
//**********************************************************************
//**********************************************************************
//**********************************************************************
function lerp(start,end,bias ) = (end * bias + start * (1 - bias));
function p2n(pa,pb,pc)=let(u=pa-pb,v=pa-pc)un([u[1]*v[2] - u[2]*v[1], u[2]*v[0] - u[0]*v[2], u[0]*v[1] - u[1]*v[0]]);

function len3(v) = sqrt(pow(v[0], 2) + pow(v[1], 2) + pow(v[2], 2));
function un(v) = v / max(len3(v),0.000001) * 1;

function polyarea(p1 ,p2,p3)=heron ( len3(p1-p2),len3(p2-p3),len3(p2-p1));

function rnd(a,b)=a+(rands(0,1,1)[0])*(b-a);
function rndc()=[rands(0,1,1)[0],rands(0,1,1)[0],rands(0,1,1)[0]];

function v3rnd(c)=[rands(-1,1,1)[0]*c,rands(-1,1,1)[0]*c,rands(-1,1,1)[0]]*c;

function heron(a,b,c) =let(s = (a+b+c)/2) sqrt(abs(s*(s-a)*(s-b)*(s-c)));

```


[User]
Hi, I'm looking to have an OpenSCAD adapter designed. I have a small electronic screwdriver kit with a hex bit that is 7.4mm across the flats, and a mini power screwdriver with a bit holder that is 4.8mm across the flats. I made a quick adapter myself, and I'd like to make it more configurable and robust.

Ideally, the adapter would be a hex-shaped extrusion with a hole through the center, also a hex shape. Basically, I want a hex socket on one end and a hex bit on the other, kind of like a sleeve or a hollow bolt, if that makes sense. The thickness should be configurable. Could you please design a parametric OpenSCAD file to create that? The default depth/thickness should be 10mm, but I'd like that configurable. Can you use the MCAD library for this project?

Thanks!

[Assistant]
socketadapter.scad:
```

linear_extrude(10){
difference(){
Hex(7.4);
Hex(4.8);
}
}
module Hex(size){
 circle(size/2,$fn=6);
}
```


[User]
I'd like to create a parametric, "impossible" dovetail joint in OpenSCAD. I've seen a few versions online, but I want to make sure I can easily adjust the fit for my printer.

The basic idea is that the joint is made of two interlocking pieces, each essentially a cube. When assembled, they overlap by 50% of their length.  I'd like parameters for:

1.  **`SIZE`**: The base dimension of each cube. Both pieces will start as this size, or based off of it, before the dovetail cuts are made.
2. **`SLACK`**: The clearance between the two parts, this would allow a printer to adjust for their specific tolerance
3. **`STYLE`**:  This parameter will be a string. It should allow me to output different visualizations of the model using these values:
     *   `"ASSEMBLED"`: Shows both pieces joined together.
    *  `"SEPARATE"`: Shows the two pieces separated but in alignment with each other.
     *   `"PRINT1"`: Shows the first piece oriented for printing
     *  `"PRINT2"`: Shows the second piece oriented for printing.

The dovetail itself is somewhat unusual in that it's cut using a 45-degree rotation.  Each piece has a set of teeth cut out of it such that when combined the two pieces interlock.

I'm not sure how best to approach that unusual dovetail geometry, but you seem pretty smart so I'm confident you'll figure it out.

For libraries, I don't think I need anything beyond the standard OpenSCAD language.

[Assistant]
impossible_dovetail_v2.scad:
```
/**
  "Impossible" dovetail joint.
  Inspired by http://www.thingiverse.com/thing:172827.
 */

/* [Dimensions] */

// Each piece will be a cube with this dimension
SIZE = 20;

// Increase for a looser fit
SLACK = 0.4;

// Set this to ASSEMBLED, SEPARATE, PRINT1, or PRINT2.
STYLE = "SEPARATE";  // ["ASSEMBLED":Assembled, "SEPARATE":Separate, "PRINT1":First piece for printing, "PRINT2":Second piece for printing]

/* [Hidden] */

EPSILON = 0.1;

/* This function from:
 *  Dovetail parametric generator for OpenScad
 *  Générateur de queue d'aronde pour OpenScad
 *
 *  Copyright (c) 2012 Charles Rincheval.  All rights reserved.
 *  https://github.com/hugokernel/OpenSCAD_Dovetail
 *  http://www.digitalspirit.org/
 *
 *  Create one tooth
 *  @param int width        Tooth width
 *  @param int height       Tooth height
 *  @param int thickness    Tooth thickness
 */
module dovetail_tooth(width, height, thickness, slack) {
    offset = width / 3 + slack / 2;
    translate([- width / 2, - height / 2, 0]) {
        linear_extrude(height = thickness) {
            polygon([[0, 0], [width, 0], [width - offset, height], [offset, height]]);
        }
    }
}

/* Makes two halves of a prism assembled by an "impossible" dovetail joint.
  Each piece will be a cube with dimension d; assembled they are 3/2 * d long.
  (That is, they overlap by 50% of their length.)
  'slack' is the sliding tolerance in mm.
  'part' is 1 for the first part, 2 for the second.
*/
module impossible(d, slack, part) {
  h = d * sqrt(2);
  big = 10;

  if (part == 1)
    translate([-d/4,0,0])
      color("GREEN")
        difference() {
          cube(size = d, center = true);
          for (i=[-1, 1])
            translate([d/4 + slack, i * d/2, 0])  // orient on the edge and centered on the face
              rotate([-45,0,0])  // the trick: 45-degree rotation
                rotate([180,90,90])  // cutting orientation
                  translate([0, 0, -big * d / 2])  // center
                    dovetail_tooth(h / 3.5, d/2 + slack + EPSILON, big * d, -slack / sqrt(2));
        }

  if (part == 2)
    translate([+d/4 + slack/2,0,0])
      color("RED")
        union() {
          translate([d/4, 0, 0])
            cube(size = [d/2, d, d], center = true);
          intersection() {
            translate([0, 0, 0])
              cube(size = d, center = true);
            for (i=[-1, 1])
              translate([-d/4 + slack, i * d/2, 0])  // orient on the edge and centered on the face
                rotate([-45,0,0])  // the trick: 45-degree rotation
                  rotate([180,90,90])  // cutting orientation
                    translate([0, 0, -big * d / 2])  // center
                      dovetail_tooth(h / 3.5 - slack * 2, d/2 + slack + EPSILON, big * d, slack / sqrt(2));
          }
        }
}

// Presentation

if (STYLE == "SEPARATE") {
  translate([-SIZE/2, 0, 0])
    impossible(SIZE, SLACK, 1);

  translate([SIZE/2, 0, 0])
    impossible(SIZE, SLACK, 2);
} else if (STYLE == "ASSEMBLED") {
  impossible(SIZE, SLACK, 1);
  impossible(SIZE, SLACK, 2);
} else if (STYLE == "PRINT1") {
  rotate([0,-90,0])
    impossible(SIZE, SLACK, 1);
} else if (STYLE == "PRINT2") {
  rotate([0,90,0])
    impossible(SIZE, SLACK, 2);
}
```


[User]
Hey there, I'm looking for a way to generate Sierpinski tetrahedra in OpenSCAD, but I want it to be really flexible. I've seen some scripts out there, but they don't quite do what I want. I need a parametric design, and I'd like the ability to control a few things.

Specifically, I want to:

1.  **Choose the base shape:** I'd like to be able to choose whether to start with a tetrahedron, a sphere, or a cube.
2.  **Control the initial size:** The starting shape should have a customizable side length (or diameter for the sphere).
3.  **Adjust the overlap:** I'd like a parameter to control the amount of overlap between the individual pieces. It would be nice if this were a percentage or a multiplier.
4.  **Set the iterations:** The number of iterations of the Sierpinski construction should be adjustable.
5.  **Maintain relative volume:** As I increase iterations, it'd be great if the overall final object roughly stayed the same size, rather than getting drastically larger. I'm not sure how to achieve this, but perhaps scaling the input shape based on the number of iterations will work? I need this functionality.
6.  **No library dependencies**: Please do not use any external libraries like MCAD or BOSL. Everything should be in a single .scad file, or multiple if it makes sense.

Could you generate a parametric OpenSCAD file (or files) that does this? I'm primarily concerned with getting the core Sierpinski generation working, and do not need extensive comments, although clarity is appreciated.

[Assistant]
Sierpinski_Tetrahedron.scad:
```
/***************************************************
Sierpinski Tetrahedron Generator
By Adam Anderson

Iteratively creates the Sierpinski Tetrix using any
starting 3D shape.
***************************************************/

//What would you like the starting shape to be?
shape = "Tetrahedron"; //["Tetrahedron":Tetrahedron, "Sphere":Sphere, "Cube":Cube]

side_length = 10;

//Controls the size of seed shapes
overlap = 1.5; //[0.5:0.5:10]

iterations = 4; //[1:8]

/* Useful_length scales the input length depending on the number
* of iterations so that the final geometry will occupy roughly the same
* volume regardless of the number of iterations.
*/
useful_length = side_length / pow(2, iterations - 1);

if(shape == "Tetrahedron") {
    Sierpinski(side_length, iterations) {
        tetrahedron(useful_length);
    }
}
else if(shape == "Sphere") {
    Sierpinski(side_length, iterations) {
        sphere(useful_length);
    }
}
else if(shape == "Cube") {
    Sierpinski(side_length, iterations) {
        cube(useful_length);
    }
}

module iterate(side = 10) {
    children(0);
    translate([side, 0, 0]) children(0);
    translate([side / 2, side * sqrt(3) / 2, 0]) children(0);
    translate([side / 2, side * sqrt(3) / 6, side * sqrt(6) / 3 ]) children(0);
}

module tetrahedron(size) {
    polyhedron(
        points = [
            [0, size * (sqrt(3) - (1 / sqrt(3))), 0],
            [size, size * (-1 / sqrt(3)), 0],
            [-size, size * (-1 / sqrt(3)), 0],
            [0, 0, size * 2 * sqrt(2 / 3)]
        ],
        faces = [
            [0, 1, 3],
            [2, 3, 1],
            [2, 0, 3],
            [2, 1, 0]
        ]
    );
}

/*
* Uses input shape to create Sierpinski Tetrix by scaling
* and translating duplicates of the original shape.
* See the iterate module for specific translation amounts.
*/
module Sierpinski(side = 10, iterations = 5) {
    if(iterations > 0) {
        iterate(side) {
            Sierpinski(side / 2, iterations - 1) {
                children(0);
            }
        }
        scale(overlap) children(0);
    }
}
```


[User]
Hey, I'm looking to design a parametric set of tetris-shaped bookshelf blocks that I can 3D print. I've done a little with OpenSCAD in the past, but I'm not quite up to making something this complex from scratch.

I need each block to be based on the standard tetris pieces: I, Z, L, T, and O. I'd like to be able to control the size of the base unit block, the depth of the piece, and the wall thickness. I'm planning to print these in vase mode, so it's important that I can specify whether the block should be solid or hollow, but in a way that works for vase mode printing (single wall thickness for a hollow print). I'd like the wall thickness to be adjustable as well for nozzle variation.

So, to be clear, I need an OpenSCAD module, let's call it `createPart`, that takes the following parameters: `type` (string, one of "I", "Z", "L", "T", "O"), `size` (int, the base unit cube size), `depth` (int, the height/depth of the piece), `thickness` (int, the wall thickness), and `solid` (boolean). The module should produce either a solid block or a single-walled hollow block for vase mode printing depending on the solid parameter. The `solid` parameter should not add a bottom layer, that will need to be done with a separate module.

I guess that's pretty straightforward. I don't need any libraries beyond the standard OpenSCAD functions. Let me know if that makes sense. I would like to be able to control whether or not the walls are filled with infill. Maybe that should be part of the `solid` parameter or something? I'm a little fuzzy on how that's best handled in vase mode, but I suppose we can worry about that later.

[Assistant]
tetris_bookshelf_v2-0.scad:
```

// type of tetris piece
_1_piece = "Z"; //[I,Z,L,T,O]

// size of a tetris block (parts will be larger)
_2_size = 80;

// depth of the tetris piece
_3_depth = 80;

/* [Hidden] */

// thickness of the walls
_4_thickness = 2;

_5_solid = true;

module createPart(type, size, depth, thickness, solid) {
	eps = 0.1;

	translate([0,0,depth/2]) {
		if (type == "I") {
			difference() {
				cube(size=[size*4, size, depth], center=true);
                if (!solid) {
                    cube(size=[size*4-thickness*2, size-thickness*2, depth+eps], center=true);
                }
			}
		} else if (type == "O") {
			difference() {
				cube(size=[size*2, size*2, depth], center=true);
                if (!solid) {
                    cube(size=[size*2-thickness*2, size*2-thickness*2, depth+eps], center=true);
                }
			}
		} else if (type == "T" || type == "L") {
			translate([0, -size/2,0])
			difference() {
				union() {
					cube(size=[size*3, size, depth], center=true);
					translate([type == "L" ? size : 0, size/2,0]) {
						cube(size=[size, size*2, depth], center=true);
					}
				}
                if (!solid) {
                    cube(size=[size*3-thickness*2, size-thickness*2, depth+eps], center=true);
                    translate([type == "L" ? size : 0, size/2,0]) {
                        cube(size=[size-thickness*2, size*2-thickness*2, depth+eps], center=true);
                    }
                }
			}
		} else if (type == "Z") {
			difference() {
				union() {
					cube(size=[size, size*2, depth], center=true);
					translate([size/2, size/2,0]) {
						cube(size=[size*2, size, depth], center=true);
					}
					translate([-size/2, -size/2,0]) {
						cube(size=[size*2, size, depth], center=true);
					}
				}
                if (!solid) {
                    cube(size=[size - thickness*2, size*2 - thickness*2, depth+eps], center=true);
                    translate([size/2, size/2,0]) {
                        cube(size=[size*2 - thickness*2, size - thickness*2, depth+eps], center=true);
                    }
                    translate([-size/2, -size/2,0]) {
                        cube(size=[size*2 - thickness*2, size - thickness*2, depth+eps], center=true);
                    }
                }
			}
		}
	}
}

createPart(_1_piece, _2_size, _3_depth, _4_thickness, _5_solid);

```


[User]
Hi, I'm looking for an OpenSCAD design for a jig to drill extra holes in an IKEA BILLY bookcase. The idea is that the jig will use the existing holes to align itself, and then guide the drill to make new, accurately positioned holes. It also needs to limit the depth of the drill so I don't go through the side of the bookcase.

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

*   `thickness`: The thickness of the jig itself.
*   `bit_protrusion`: How much the drill bit sticks out of the drill chuck. This determines how long the jig should be to stop the drill at the right depth.
*   `guide_holes`: The number of existing BILLY holes the jig will use to align itself.
*   `jig_holes`: The number of new holes the jig will guide.
*   `slack`: A fudge factor to account for printer tolerances. This should be added to the diameter of the holes for the pins.
*   `pitch`: The spacing between the holes (should be 32.1mm for a BILLY).
*   `diameter`: The diameter of the support pins that go into the existing holes (4.9mm).
*   `depth`: The depth of the pin holes in the jig (9mm).

The jig should be a 2D shape with a few holes that use existing BILLY holes to align itself, plus a few other holes that guide the drill bit. I think it should use cylinders and a hull to create the outline shape, and then subtract cylinders to create the holes. I will want to create the drill holes such that the *drill bit* has the correct clearance, but that the locating pin holes are snug (with my "slack" fudge factor).

I need the design to be fully parametric and make use of the BOSL2 library.

[Assistant]
billyjig.scad:
```
// Jig for drilling holes into BILLY sides.
// By JI <jayeye@gmail.com>
// The latest version of this file can always be found at
// https://github.com/jayeye/jum/tree/master/src/scad/billyjig

/* [Jig parameters] */

// Thickness of template
thickness = 2;

// How much the drill protrudes from the chuck
bit_protrusion = 50;

// How many holes to use as guides
guide_holes = 2;

// How many holes to drill
jig_holes = 3;

// Fudge factor to account for printer tolerances (mine: twice the nozzle size)
slack = .8;

/* [Billy parameters -- you should probably not change these] */

// Spacing between holes
pitch = 32.1;

// Diameter of support pins
diameter = 4.9;

// Depth of pin hole
depth = 9;

$fn = 60;

module billy_jig(
  diameter=diameter,
  pitch=pitch,
  depth=depth,
  thickness=thickness,
  bit_protrusion=bit_protrusion,
  guide_holes=guide_holes,
  jig_holes=jig_holes,
  slack=slack) {
  slack_dia = diameter + slack;
  big_r = 3 * slack_dia / 2;
  r = slack_dia / 2;
  n_holes = guide_holes + jig_holes;
  difference() {
    union() {
      hull() {
        for (o = [1 : n_holes]) {
          translate([pitch * (o - .5), pitch * .5, 0]) {
             cylinder(r=(2 * big_r), h=thickness);
          }
        }
      }
      for (o = [1 : jig_holes]) {
        translate([pitch * (o - .5), pitch * .5, 0]) {
          cylinder(r=big_r, h=(bit_protrusion - depth));
        }
      }
    }
    for (o = [1 : n_holes]) {
      translate([pitch * (o - .5), pitch * .5, 0]) {
          cylinder(r=r, h=bit_protrusion);
      }
    }
  }
}

billy_jig();
```


[User]
I'd like to design a parametric bottle holder tray for small bottles like e-cig liquid or paint pots, and I'm having a hard time getting the code right. The basic idea is a grid of cylindrical holes with solid bases.

Here's what I need:

*   The tray should hold a specified number of bottles in a rectangular grid. I need to be able to set the number of bottles along the x-axis and y-axis.
*   Each bottle hole should be a cylinder with a flat base. I want to set the *inside* diameter of these cylinders, so I can account for the bottle and a little bit of clearance.
*   I also need to specify the overall height of the holder, and the thickness of the solid base. The height of the hole should be equal to the overall height minus the base thickness.
*   The wall thickness around each cylinder should be adjustable, and I'd like to use this same thickness to connect the cylinders together.
*   I'd prefer it if the cylinders were evenly spaced within the boundaries formed by the first and last row and column of cylinders.
*   The generated model should be printable on a standard 3D printer. I'm aiming for a design that will be easily generated as an .STL file from the .SCAD code and that renders reasonably quickly.

I think it would be good if the code included comments to help me understand what's going on, too. I'm not sure if this is relevant, but I've heard that the `$fn` variable can affect the smoothness of curves, so I'd like to be able to adjust that. It'd also be good to not assume a specific nozzle size or layer height (even for the comment-based suggested printing settings). I'm not expecting the code to have any "best practices" for printing settings baked in.

I don't have any code to provide as a starting point, but I've seen other OpenSCAD files that do this sort of thing by using for loops, and I believe I can understand and modify such code if it's reasonably clear. I'm not familiar with OpenSCAD libraries, so I'd rather stick with vanilla OpenSCAD code.

I think that's all the information I can think of. Let me know if you need anything else.

[Assistant]
Parametric_botte_holder.scad:
```
// Code written by "deckingman" Feb 2016
// Use and enjoy

// User Defined Variables
// Change any of the following to suit

// The number of bottles along the x axis
Number_Of_Bottles_Long=5;

// The number of bottles along the y axis
Number_Of_Bottles_Wide=5;

// The inside diameter of the cylinders which hold the bottles.
// Measure your bottle then add a milimeter or 2 for clearance
Inside_Diameter=23;

// The overall height in mm. Note that the depth of the hole will be this number minus the base thickness
Overall_Height=25;

// The base thickness in mm. For ease of printing, make this divisible by the layer height of you slicer/printer.
// So for example if the layer height is 0.3 mm use 1.8 or 2.1 but not 2.0.
Base_Thickness=1.8;

// The wall thickness of the cylinders. Note that the cylinders are joined together by whatever this thickness is
// so DO NOT MAKE THIS ANY LESS THAN 2mm. For ease of printing, make this number divisible by your nozzle diameter.
Wall_Thickness=2;

// Suggested Slicer settings. 3 solid top and bottom layers, 2 or 3 perimiters. 20% infill.
// Using a 0.5mm nozzle with 0.3mm layer height.

// Changing any of the following will likely screw things up !!

First_Bottle_Pos=(Inside_Diameter/2)+Wall_Thickness;
Step = Inside_Diameter+Wall_Thickness;
iMax=First_Bottle_Pos+(Number_Of_Bottles_Long*(Step-1));
jMax=First_Bottle_Pos+(Number_Of_Bottles_Wide*(Step-1));

$fn=150;

for (i = [First_Bottle_Pos:Step:iMax]){
 for (j = [First_Bottle_Pos:Step:jMax]){
    difference(){
    translate ([i,j,0])
    cylinder (d=Inside_Diameter+(2*Wall_Thickness),h=Overall_Height);
    translate ([i,j,Base_Thickness])
    cylinder (d=Inside_Diameter, h=Overall_Height);
        }
    }
}
```


[User]
I need a parametric OpenSCAD design for a guide that can be placed over a numeric keypad or a tablet to help with direct interaction. Think of it like a stencil for your fingers, with holes for each number or control. I'm picturing a base plate with vertical bars on the left and right edges for stability, and a grid of holes in the middle.

Here are the parameters I want to control:

*   **Overall Dimensions:**
    *   `longueur_gd`: Overall length of the guide.
    *   `largeur_gd`: Overall width of the guide.
    *   `epaisseur_gd`: Thickness of the base plate.
*   **Hole Grid:**
    *   `nb_ligne_trous`: Number of rows of holes.
    *   `nb_colonne_trous`: Number of columns of holes.
    *  `diametre_trous`: Diameter of each hole.
     *  `d_entre_trous`: Distance between the center of each hole in both row and column. This is intended to be uniform for all holes.
*   **Side Bars:**
    *   `hauteur_bl`: Height of the vertical side bars.
    *   `largeur_bl`: Width of the vertical side bars.
*   **Positioning:**
    * `distance_trou_bl`: Distance between the holes and the left side bar.
    * `distance_trou_bs`: Distance between the holes and the top edge of the base plate.

I'd like the side bars to run the full length of the guide on both sides. The holes should be arranged in a grid within the central area. I also would like the center of the first hole on the first row of holes to be at (`distance_trou_bs` + `diametre_trous`/2, `distance_trou_bl` + `largeur_bl` + `diametre_trous`/2), or in other words, that distance from the top edge + half the hole diameter, and that distance from the side + the side bar width + half the hole diameter. Each subsequent hole should be offset from the last using `d_entre_trous` on either axis.

The design should use the standard `$fn` variable to control the rendering quality of the circles and spheres, with a default of `$fn = 20`. I don't need any specific libraries.

[Assistant]
guide-doigts_v1-1.scad:
```
/* ==========================================
//  File: guide-doigts_v1-1.scad
//
//  Description:
//  Guide doigt parametrique
//
//  Auteur : Willy ALLEGRE
//  Organisation : REHAB-LAB
//
//  Licence : CC-By-SA
// ==========================================*/

// VARIABLES

// Longueur du guide-doigts
longueur_gd = 100;
// Largeur du guide-doigts
largeur_gd = 80;
// Epaisseur du guide-doigts
epaisseur_gd = 3;

// Nombre de lignes contenant des trous
nb_ligne_trous = 5;
// Nombre de colonnes contenant des trous
nb_colonne_trous = 4;

// Hauteur des barres laterales
hauteur_bl = 20;
// Largeur des barres laterales
largeur_bl = 5;

// Distance entre trou et barre laterale droite
distance_trou_bl = 0;
// Distance entre trou et bord superieur
distance_trou_bs = 5;
// Diametre des trous
diametre_trous = 15;
// Distance entre chaque trou
d_entre_trous = 18;

// Definition generale des formes geometriques
$fn = 20;

// FIN VARIABLES

// DESSIN

// Barre laterale gauche
cube (size = [longueur_gd, largeur_bl, hauteur_bl], center = false);

// Barre laterale droite
translate([0,largeur_gd-largeur_bl,0]){
    cube (size = [longueur_gd, largeur_bl, hauteur_bl], center = false);
}

// Guide-doigts avec trous
difference() {
    cube (size = [longueur_gd, largeur_gd, epaisseur_gd], center = false);

    for (l = [0:nb_ligne_trous-1]) {
        for (c = [0:nb_colonne_trous-1]) {
            translate(
                [distance_trou_bs+diametre_trous/2+d_entre_trous*l,
                distance_trou_bl+largeur_bl+diametre_trous/2,
                0]) {
                sphere (d = diametre_trous);
            }
            translate(
                [distance_trou_bs+diametre_trous/2+d_entre_trous*l,
                distance_trou_bl+largeur_bl+diametre_trous/2+d_entre_trous*c,
                0]) {
                sphere (d = diametre_trous);
            }
        }
    }
}

// FIN DESSIN
```


[User]
Hey, I'm looking to get an OpenSCAD model designed for a customizable power strip clip. I've got a basic idea in mind already, kind of based on a design I saw online, but I need it to be more flexible.

Essentially, the clip needs to hold a power strip, and be able to attach to various surfaces with differing thicknesses. The power strip is essentially a rounded rectangle, and will be inserted into the clip with the rounded sides facing up and down. I’m thinking the clip should have two main parts. One part will cradle the power strip, and will follow its curved profile, while the other part will be a "C" shape that can grip the edge of a table or chair or whatever.

For the power strip part, the model needs to allow for setting the width and height of the rounded rectangle, along with the height radius of the curves at the top and bottom. I also need to be able to specify the opening width of the space for the power strip and the thickness of the bracket part of the clip.

For the clip part, I want to be able to specify the opening width, so it can clamp onto different thicknesses of table or chair edges.

So, in summary, I need:

*   A rounded rectangular opening for the power strip, defined by:
    *   `width`: overall width of the power strip profile.
    *   `height`: overall height of the power strip profile
    *   `heightRadius`: radius of the curved top and bottom of the power strip
    *   `powerStripOpeningWidth`: how much space the opening allows for the powerstrip to fit into the clip.
*   A clamping part that can grip onto edges, defined by:
    *   `clipOpeningWidth`: the width of the opening in the "C" shaped clamping part.
    *   `bracketThickness`: the overall thickness of the clip (both power strip and clamping parts).

I'd like to be able to adjust all of these parameters. I'm not too bothered by the exact shape or positioning, so long as it does what I've described, so you have some creative freedom. I don't need to use any libraries, I think, this is straightforward enough. I'm also not too worried about any tolerances, I'm thinking the model could be a tight fit. Let me know if you need clarification on anything!

[Assistant]
powerstrip-clip-customizable.scad:
```
// This work is licensed under the Creative Commons Attribution-ShareAlike 4.0
// International License. To view a copy of this license, visit
// http://creativecommons.org/licenses/by-sa/4.0/

$fn = 64;

width = 55;
height = 42;
heightRadius = 60;
bracketThickness = 20;
powerStripOpeningWidth = 30;
clipOpeningWidth = 31;

module powerStripCrossSection(thickness) {
	intersection() {
		translate([width / 2 - heightRadius, 0, 0])
			cylinder(r=heightRadius, h=thickness, center=true);
		translate([heightRadius - width / 2, 0, 0])
			cylinder(r=heightRadius, h=thickness, center=true);
		cube([width, height, thickness], center=true);
	}
}

difference() {
    totalWidth = width + clipOpeningWidth+3;
	cube([62, totalWidth, bracketThickness]);
    translate([31 - powerStripOpeningWidth/2, totalWidth-6, -1])
		cube([powerStripOpeningWidth, 7, bracketThickness+2]);
	translate([-1, 5, -1])
		cube([56, clipOpeningWidth, bracketThickness + 2]);
    translate([31, totalWidth-5-height/2, bracketThickness/2])
        powerStripCrossSection(bracketThickness+2);
}

```


[User]
I'd like to design a vase. It should have a polygonal base, where I can control the number of corners. I want to be able to specify the height of the vase, the radius of the base, and how much the vase should twist as it goes up. Finally, I'd like to be able to scale the top of the vase, which I think I can do with `linear_extrude`.

Could you generate an OpenSCAD file for me that does this? I need to be able to control the number of corners (e.g. 5 for a pentagon), the height, base radius, the twist angle (in degrees), and the scale of the top circle.

[Assistant]
vase_pol1.scad:
```
num_corners=5;//[3:1:10]
height=100;//[40:10:150]
base_radius=40;//[30:5:80]
angle_twist=-90;//[-180:10:180]
top_scale=.6;//[.1:.2:2]
linear_extrude(height = height, center = false, convexity = 50, twist = angle_twist,scale=top_scale,$fn=num_corners,slices=height)
 circle(base_radius);
```


[User]
Hey, I'm looking to create a parametric design for an electrophoresis comb using OpenSCAD. I've seen some designs, but they're not quite what I need, and I'm hoping you can help me create something flexible. I've attached a sample SCAD file that provides an example of the kind of parameters I need, but I'd like the design to be generated from scratch.

Here's a breakdown of what I need:

**Core Features:**

*   **Comb Body:**
    *   A main rectangular body that acts as the base of the comb. I need to be able to control its width, height, and thickness using variables.
    *   The body should have handles on each side of the top, and small side supports on each side of the bottom.
    *   I need to be able to include optional locking blocks that extend from the bottom of the comb body.

*   **Comb Teeth:**
    *   Multiple teeth should extend downwards from the body. The number of teeth, width of the teeth, spacing between the teeth, and length of the teeth should all be customizable.
    *   A support bar should run along the top of the teeth to hold them together. I should be able to control the height of this support bar.
    *   I would also like to include a text label on the side of the body to customize the comb.

**Parameters Needed:**

I need to be able to set all of the following parameters:

*   `comb_preset`: This will be an option to select common predefined settings. This might contain a set number of teeth with set widths and gaps, or a custom option. If a predefined preset is used, it should override the `custom_` parameters.
*  `text_label`: A string for the text to be printed on the side of the comb.
*   `locking_block_supports`: A boolean, or a string of "yes" or "no", to control whether locking blocks are generated or not.
*   `tooth_thickness`: The thickness of each tooth.
*   `custom_tooth_count`: Number of teeth when `comb_preset` is set to custom.
*   `custom_tooth_width`: The width of each tooth when `comb_preset` is set to custom.
*   `custom_tooth_gap`: The space between teeth when `comb_preset` is set to custom.
*   `tooth_length`: The length of each tooth.
*   `tooth_support`: The height of the support structure along the top of the teeth.
*   `body_x`: The width of the comb body.
*   `body_y`: The thickness of the comb body.
*   `body_z`: The height of the comb body.
*   `support_x`: The width of the locking block (if present) and side supports.
*  `support_y`: The thickness of the locking block (if present) and side supports.
*   `support_z`: The height of the locking block (if present).

**Additional Notes:**

*   I don't need any libraries beyond the core OpenSCAD functionality.
*   I'd prefer it if the code was well-commented so I can easily understand how it works.

Could you generate the necessary OpenSCAD file(s) based on these requirements? Thanks!

[Assistant]
preset_ep_comb.scad:
```
echo(version=version());
// Parameters used to generate model (Values are measured in mm)

//Preset settings for default 65mm wide baths
comb_preset = 8; //[8, 9, 15, 17, Custom]
// Label or name you want to appear on the side
text_label = "Your Text Here";

// Include square blocks on bottom of support
locking_block_supports = "yes"; // [yes, no]
// Thickness of each tooth  (in mm)
tooth_thickness = 1.5;

/*[Custom Dimensions]*/
// Number of wells
custom_tooth_count = 8;
// Width of each tooth  (in mm)
custom_tooth_width = 5.6;
// Spacing between teeth.  (in mm)
custom_tooth_gap = 1.6;
// Length of teeth (measured in mm perpendicular from bottom of support)
tooth_length = 17.75;
// Height of upper support on teeth  (in mm)
tooth_support = 6;

/////////////////////
// OPENSCAD CODE
/////////////////////
union(ep_comb) {

// Primary support bar
    translate([0, 0, 0])
    linear_extrude(height = 5, scale = 0.95)
    square([body_x, body_y], center = true);

//Handles
     // Handle Center
        translate([0, 0, body_z])
        linear_extrude(height = 7, scale = 0.6)
        square([20, 4], center = true);
    // Handle left
        translate([(-body_x/2)+11.75, 0, body_z])
        linear_extrude(height = 5, scale = 0.6)
        square([20, 4], center = true);
    // Handle right
        translate([(body_x/2)-11.75, 0, body_z])
        linear_extrude(height = 5, scale = 0.6)
        square([20, 4], center = true);

// Left support square
	// Support base
        translate([(-body_x/2)+2.5, 0, 0])
    	linear_extrude(height = 2)
    	square([5, 15], center = true);
	// Angled Support
        translate([(-body_x/2)+2.5, 0, 2])
        linear_extrude(height = 3, scale = 0.3)
        square([5, 15], center = true);

// Right support square
	// Support base
        translate([(body_x/2)-support_x, 0, 0])
    	linear_extrude(height = 2)
    	square([5, 15], center = true);
    // Angled Support
        translate([(body_x/2)-support_x, 0, 2])
        linear_extrude(height = 3, scale = 0.3)
        square([5, 15], center = true);

// Text placed on body of comb
    logo(text_label);

// Locking Blocks.
	if(locking_block_supports == "yes")
	{

    // Right
        translate([(body_x/2)-support_x, 0, -support_z]) linear_extrude(height = support_z) square([support_x, support_y], center = false);

    // Left
        translate([-body_x/2, 0, -support_z]) linear_extrude(height = support_z) square([support_x, support_y], center = false);
	}

/* Teeth Presets */
// 8 Teeth
if(comb_preset == 8)
    {
        tooth_count = 8;
        tooth_width = 5.6;
        tooth_gap = 1.2;
        translate([tooth_margin, 0, -tooth_length/2]) union() {
            for(i = [0:tooth_count-1]) {
                translate([i * (tooth_width + tooth_gap), 0, 0])
                cube([tooth_width, tooth_thickness, tooth_length], center=true);
            }
        }
    // Teeth support
        translate([0, 0, -tooth_support])
        linear_extrude(height = tooth_support)
        square([(tooth_width*tooth_count)+(tooth_gap*(tooth_count-1)), tooth_thickness], center = true);

        tooth_margin = -(((tooth_count-1)*tooth_width)/2+((tooth_count-1)*tooth_gap)/2);
	}
// 9 Teeth
if(comb_preset == 9)
    {
        tooth_count = 9;
        tooth_width = 5.0;
        tooth_gap = 1.2;
        translate([tooth_margin, 0, -tooth_length/2]) union() {
            for(i = [0:tooth_count-1]) {
                translate([i * (tooth_width + tooth_gap), 0, 0])
                cube([tooth_width, tooth_thickness, tooth_length], center=true);
            }
        }
    // Teeth support
        translate([0, 0, -tooth_support])
        linear_extrude(height = tooth_support)
        square([(tooth_width*tooth_count)+(tooth_gap*(tooth_count-1)), tooth_thickness], center = true);

        tooth_margin = -(((tooth_count-1)*tooth_width)/2+((tooth_count-1)*tooth_gap)/2);
	}
// 15 Teeth
if(comb_preset == 15)
    {
        tooth_count = 15;
        tooth_width = 2.8;
        tooth_gap = 1;
        translate([tooth_margin, 0, -tooth_length/2]) union() {
            for(i = [0:tooth_count-1]) {
                translate([i * (tooth_width + tooth_gap), 0, 0])
                cube([tooth_width, tooth_thickness, tooth_length], center=true);
            }
        }
    // Teeth support
        translate([0, 0, -tooth_support])
        linear_extrude(height = tooth_support)
        square([(tooth_width*tooth_count)+(tooth_gap*(tooth_count-1)), tooth_thickness], center = true);

        tooth_margin = -(((tooth_count-1)*tooth_width)/2+((tooth_count-1)*tooth_gap)/2);
	}
// 17 Teeth
if(comb_preset == 17)
    {
        tooth_count = 17;
        tooth_width = 2.3;
        tooth_gap = 1;
        translate([tooth_margin, 0, -tooth_length/2]) union() {
            for(i = [0:tooth_count-1]) {
                translate([i * (tooth_width + tooth_gap), 0, 0])
                cube([tooth_width, tooth_thickness, tooth_length], center=true);
            }
        }
    // Teeth support
        translate([0, 0, -tooth_support])
        linear_extrude(height = tooth_support)
        square([(tooth_width*tooth_count)+(tooth_gap*(tooth_count-1)), tooth_thickness], center = true);

        tooth_margin = -(((tooth_count-1)*tooth_width)/2+((tooth_count-1)*tooth_gap)/2);
	}
// Custom Teeth
if(comb_preset == "Custom")
    {
        tooth_count = custom_tooth_count;
        tooth_width = custom_tooth_width;
        tooth_gap = custom_tooth_gap;
        translate([tooth_margin, 0, -tooth_length/2]) union() {
            for(i = [0:tooth_count-1]) {
                translate([i * (tooth_width + tooth_gap), 0, 0])
                cube([tooth_width, tooth_thickness, tooth_length], center=true);
            }
        }
    // Teeth support
        translate([0, 0, -tooth_support])
        linear_extrude(height = tooth_support)
        square([(tooth_width*tooth_count)+(tooth_gap*(tooth_count-1)), tooth_thickness], center = true);

        tooth_margin = -(((tooth_count-1)*tooth_width)/2+((tooth_count-1)*tooth_gap)/2);
	}

}

body_x = 84.84;
body_z = 5;
body_y = 5;

support_x = 2.72;
support_y = 2.55;
support_z = 2.64;

module logo(t, s = 2.5, style = "") {
  translate([0, -body_y/2+.75, 1])
    rotate([90, 0, 0]) color("red")
    linear_extrude(height = 1)
    text(t, size = s, font = str("Liberation Sans", style),  halign = "center");
}
/*
* Customizable Electrophoresis Comb (width-65mm)
*
* Copyright (c) 2016 Adm Chrysler
* www.admchrysler.com / chrysler@cornell.edu
* Licensed under the Creative Commons
* Attribution - Non-Commercial - Share Alike license.
*
*/

```


[User]
I need a parametric OpenSCAD design for a universal Bowden extruder mount that attaches to a printer's frame. I'd like to be able to customize the following:

*   **Frame Thickness:** The thickness of the printer's frame.
*   **Frame Height:** The vertical height of the frame.
*   **Tilt Angle:** The angle at which the Bowden tube will be angled off the frame (like in the existing code).
*   **Brace Support:** An option to include or exclude a support brace. This brace would connect the vertical frame mount to the angled portion of the Bowden tube holder and would help support the tilted section.
*   **Carriage Mount:** A flag to enable/disable a 4-hole carriage mount.
*   **Horizontal Spacing Holes:** I need up to three horizontal spacing holes for attaching various accessories.
    *   Each spacing hole needs to be individually enabled/disabled.
    *   The hole diameter should be adjustable.
    *   The nut recess size should also be adjustable, and I should be able to disable them.
*   I don't need to provide the math functions for the triangle calculations, those can be included. I'm assuming basic trig functions are part of the standard library.

The mount should clamp onto the printer's frame, using screws, and incorporate the nut recesses for any needed hardware. The main body should be designed to accommodate the horizontal spacing holes, optional carriage mount, and the tilted Bowden tube mount. The screw holes used to clamp onto the frame should be configurable or a reasonable default size, I guess M5 or 5.5mm dia. I don't have any particular preferences on how the math should be laid out but it needs to be a parametric model and easy to customize. This is similar to the provided `universal_bowden_frame_mount.scad` file but it should be completely re-written. I don't need you to use the old code as a reference.

Also, can you include comments in the code for clarity? I would like it to be as human readable as possible, and not too dense. I'd prefer to avoid any libraries for this project. Thanks!

[Assistant]
universal_bowden_frame_mount.scad:
```
/* [Main] */

// The tilt angle of the mount
topTiltAngle = 45; // [0:90]

// How thick is your printer's frame?
frameThickness = 4; // [1:20]

// What is the height of the frame? (Bolts holes will be placed at the bottom to help it clamp on)
frameZ = 40; // [1:100]

// Should a support brace be added? (recommended)
addBrace=1; // [0:false,1:true]

// Should it include the 4 hole Carriage Mount?
carriage_mount=1; // [0:false,1:true]

//Horizontal Spacing 1 (0 to disable)
horizontal_spacing_1=30; // [0:100]

//Horizontal Spacing 2 (0 to disable)
horizontal_spacing_2=50; // [0:100]

//Horizontal Spacing 3 (0 to disable)
horizontal_spacing_3=0; // [0:100]

// The hole size for the horizontal spacing holes.
horizontal_spacings_dia=3.25; // [2:0.05:8]

// The nut size for the nut recesses, set to 0 to disable.
horizontal_spacings_nut_size=5.8; // [3:0.05:13]

//////////////////////////////////////////////////////
// END USER EDITABLE
//////////////////////////////////////////////////////

/* [Hidden] */

horizontal_spacings=[horizontal_spacing_1,horizontal_spacing_2,horizontal_spacing_3];
$fn=30;
carriage_hole_spacing = carriage_mount ? 23 : 0;
carriage_hole_dia = 4.25;
body_width_padding = 8;
body_width = max(max(horizontal_spacings), carriage_hole_spacing)+max(carriage_hole_dia, horizontal_spacings_dia)+body_width_padding;
tiltAngle = min(max(topTiltAngle, 0), 90);
if(tiltAngle!= topTiltAngle) {
    echo(str("<b><font color='red'>Changed topTiltAngle from ", topTiltAngle, " to ", tiltAngle,"</font></b>"));
}

tilt_hdist = triangle_AAS_c(90, 90-tiltAngle, 18 + max(carriage_hole_spacing, 0) + 5);
tilt_vdist = triangle_AAS_b(90, 90-tiltAngle, 18 + max(carriage_hole_spacing, 0) + 5);

union() {
	difference() {
		union() {
			cube([body_width, frameThickness + 8, frameZ + 20]);
            if(addBrace && 180-tiltAngle > 0) {
                difference() {
                    translate([0, -tilt_hdist + frameThickness + 8, 0])
                        cube([
                            (body_width_padding/2)-1.5,
                            tilt_hdist,
                            tilt_vdist+frameZ + 20
                        ]);

                    translate([-0.1, frameThickness + 8, frameZ + 20]) rotate([tiltAngle,0,0]) rotate([0,0,0]) cube([(body_width_padding/2)-1, 18 + max(carriage_hole_spacing, 0) + 5, tilt_hdist*2]);

                    translate([(body_width_padding/2)-1-0.1, 0, 0]) rotate([0,0,180])rotate([-(90-triangle_SAS_A(tilt_hdist-(frameThickness + 8), 90, tilt_vdist+frameZ + 20)),0,0]) rotate([0,0,0]) cube([(body_width_padding/2)-1, tilt_hdist*5, triangle_SAS_b(frameZ + 20, 180-tiltAngle, 18 + max(carriage_hole_spacing, 0) + 5)]);
                }
            }
			translate([body_width,frameThickness+8,frameZ + 20]) rotate([180+tiltAngle,0,0]) rotate([0,180,0]) difference() {
				cube([body_width, 5, 18+max(carriage_hole_spacing, 0) + 5]);
                if(carriage_hole_spacing != undef && carriage_hole_spacing > 0) {
                    translate([(body_width/2)-(carriage_hole_spacing/2), 11.1, 18]) rotate([90, 0, 0])cylinder(h=11.2, r=carriage_hole_dia/2);
                    translate([(body_width/2)+(carriage_hole_spacing/2), 11.1, 18]) rotate([90, 0, 0])cylinder(h=11.2, r=carriage_hole_dia/2);
                    translate([(body_width/2)-(carriage_hole_spacing/2), 11.1, 18+carriage_hole_spacing]) rotate([90, 0, 0])cylinder(h=11.2, r=carriage_hole_dia/2);
                    translate([(body_width/2)+(carriage_hole_spacing/2), 11.1, 18+carriage_hole_spacing]) rotate([90, 0, 0])cylinder(h=11.2, r=carriage_hole_dia/2);
                }
                if(len(horizontal_spacings) == undef && horizontal_spacings > (horizontal_spacings_dia*2) + 1) {
                    // this is a single number
                    if(
                        carriage_hole_spacing == undef ||
                        carriage_hole_spacing <= 0 ||
                        horizontal_spacings >= (carriage_hole_spacing + carriage_hole_dia + horizontal_spacings_dia + 2) ||
                        horizontal_spacings <= (carriage_hole_spacing - carriage_hole_dia - horizontal_spacings_dia - 2)
                    ) {
                        // it can fit on the same line as the bottom holes
                        translate([(body_width/2)-(horizontal_spacings/2), 11.1, 18]) rotate([90, 0, 0])cylinder(h=11.2, r=horizontal_spacings_dia/2);
                        translate([(body_width/2)+(horizontal_spacings/2), 11.1, 18]) rotate([90, 0, 0])cylinder(h=11.2, r=horizontal_spacings_dia/2);

                        translate([(body_width/2)-(horizontal_spacings/2), 11.1-7.3, 18]) rotate([90, 0, 0])hexagon(horizontal_spacings_nut_size, 2.6);
                        translate([(body_width/2)+(horizontal_spacings/2), 11.1-7.3, 18]) rotate([90, 0, 0])hexagon(horizontal_spacings_nut_size, 2.6);
                    } else {
                        // it needs to move up so it can not interfer with the carriage holes
                        translate([(body_width/2)-(horizontal_spacings/2), 11.1, 18+(carriage_hole_spacing/2)]) rotate([90, 0, 0])cylinder(h=11.2, r=horizontal_spacings_dia/2);
                        translate([(body_width/2)+(horizontal_spacings/2), 11.1, 18+(carriage_hole_spacing/2)]) rotate([90, 0, 0])cylinder(h=11.2, r=horizontal_spacings_dia/2);

                        translate([(body_width/2)-(horizontal_spacings/2), 11.1-7.3, 18+(carriage_hole_spacing/2)]) rotate([90, 0, 0])hexagon(horizontal_spacings_nut_size, 2.6);
                        translate([(body_width/2)+(horizontal_spacings/2), 11.1-7.3, 18+(carriage_hole_spacing/2)]) rotate([90, 0, 0])hexagon(horizontal_spacings_nut_size, 2.6);
                    }
                } else if(len(horizontal_spacings) > 0) {
                    for(i = horizontal_spacings) {
                        if(i > 0) {
                            if(
                                carriage_hole_spacing == undef ||
                                carriage_hole_spacing <= 0 ||
                                i >= (carriage_hole_spacing + carriage_hole_dia + horizontal_spacings_dia + 2) ||
                                i <= (carriage_hole_spacing - carriage_hole_dia - horizontal_spacings_dia - 2)
                            ) {
                                // it can fit on the same line as the bottom holes
                                translate([(body_width/2)-(i/2), 11.1, 18]) rotate([90, 0, 0])cylinder(h=11.2, r=horizontal_spacings_dia/2);
                                translate([(body_width/2)+(i/2), 11.1, 18]) rotate([90, 0, 0])cylinder(h=11.2, r=horizontal_spacings_dia/2);

                                translate([(body_width/2)-(i/2), 11.1-7.3, 18]) rotate([90, 0, 0])hexagon(horizontal_spacings_nut_size, 2.6);
                                translate([(body_width/2)+(i/2), 11.1-7.3, 18]) rotate([90, 0, 0])hexagon(horizontal_spacings_nut_size, 2.6);
                            } else {
                                // it needs to move up so it can not interfer with the carriage holes
                                translate([(body_width/2)-(i/2), 11.1, 18+(carriage_hole_spacing/2)]) rotate([90, 0, 0])cylinder(h=11.2, r=horizontal_spacings_dia/2);
                                translate([(body_width/2)+(i/2), 11.1, 18+(carriage_hole_spacing/2)]) rotate([90, 0, 0])cylinder(h=11.2, r=horizontal_spacings_dia/2);

                                translate([(body_width/2)-(i/2), 11.1-7.3, 18+(carriage_hole_spacing/2)]) rotate([90, 0, 0])hexagon(horizontal_spacings_nut_size, 2.6);
                                translate([(body_width/2)+(i/2), 11.1-7.3, 18+(carriage_hole_spacing/2)]) rotate([90, 0, 0])hexagon(horizontal_spacings_nut_size, 2.6);
                            }
                        }
                    }
                }
			}
		}
		translate([-0.1,4,-0.1]) cube([body_width + 0.2, frameThickness, frameZ + 15 + 0.1]);

		// M5 screw holes
		translate([11,frameThickness + 8 + 0.1,7.5+(5.5/2)]) rotate([90,0,0]) cylinder(h=frameThickness + 8 + 0.2, r=5.5/2);
		translate([body_width-11,frameThickness + 8 + 0.1,7.5+(5.5/2)]) rotate([90,0,0]) cylinder(h=frameThickness + 8 + 0.2, r=5.5/2);

	}

    if(addBrace && tiltAngle > 15) {
       translate([0, 4+frameThickness, (frameZ + 20) - triangle_AAS_c(90, tiltAngle, motor_length-0.2)]) cube([body_width, triangle_AAS_b(90, tiltAngle, motor_length-0.2), 4]);
    }

}

function sum_of_angles_rule(A,B) = (180-(A+B));
function law_of_sines_get_side(A,B,b) = (b*sin(A))/sin(B);
function law_of_sines_get_angle(a,B,b) = asin((a*sin(B))/b);
function law_of_cosines_get_side(b,A,c) = sqrt(pow(b,2)+pow(c,2)-2*b*c*cos(A));

function triangle_AAS_b(A,B,a) = law_of_sines_get_side(B,A,a);
function triangle_AAS_c(A,B,a) = law_of_sines_get_side(sum_of_angles_rule(A,B),A,a);

function triangle_SAS_b(c,B,a) = law_of_cosines_get_side(c,B,a);
function triangle_SAS_A(c,B,a) = (c < a ? sum_of_angles_rule(triangle_SAS_C(c,B,a),B) : law_of_sines_get_angle(a,B,triangle_SAS_b(c,B,a)) );
function triangle_SAS_C(c,B,a) = (a < c ? sum_of_angles_rule(triangle_SAS_A(c,B,a),B) : law_of_sines_get_angle(c,B,triangle_SAS_b(c,B,a)));

// size is the XY plane size, height in Z
module hexagon(size, height) {
  boxWidth = size/1.75;
  for (r = [-60, 0, 60]) rotate([0,0,r]) cube([boxWidth, size, height], true);
}
```


[User]
Hey, I'm looking to generate a ball bearing cage in OpenSCAD. I've got some specific parameters I'd like to control, and I need it to be parametric so I can easily adjust it later.

I need the following:

*   **Overall Bearing Radius:** A parameter that defines the radius of the entire bearing cage (let's call it `Bearing_Radius`).
*   **Bearing Height:** A parameter for the overall height of the bearing, also corresponding to the ball diameter (`Bearing_Height`).
*   **Internal Radius:** The radius of the inner part of the cage, which will define the race (`Bearing_Internal_Radius`).
*   **Number of Balls:** A parameter to set the number of balls in the bearing (`Bearing_Number`).
*   **Ball Tolerance:** The space between the balls and the inner/outer races of the cage. This should be a small value to ensure they're not fused after printing, and I'll call this parameter `Bearing_Tolerance`.

The cage should have circular pockets that cradle the balls. I'd like to use cylinders and spheres for creating these features. The ball pockets are centered around the height of the ball, and I need to have the inner and outer cage walls.

Could you create the OpenSCAD files for me?

[Assistant]
BearingCage.scad:
```
//CUSTOM
// Companion for http://www.thingiverse.com/thing:822960
//Radius of the entire bearing (all values in mm by default)
Bearing_Radius = 55;

//Height of the entire bearing (also diameter of the internal balls)
Bearing_Height = 15;

//Minimum radius of the certer portion of the bearing
Bearing_Internal_Radius = 35;

//Number of balls within the bearing
Bearing_Number = 12;

//Space between the balls and the internal bearing walls (on each side, must be greater than 0 or balls will print fused)
Bearing_Tolerance = 0.5;

//Definition of the entire model
Definition = 50;
module cage(radius, height, intthickness, bearingnum, bearingtol,fn) {
	//cylinder(height, radius, radius, true);
difference(){
	   union(){

   	rotate_extrude()translate([intthickness+bearingtol+height/2,0,0])
       translate([0,height/2.5,0])scale([0.85,0.85,1])square(bearingtol+height/2,center=true);
         for(n = [0:bearingnum-1] ) {

	rotate([0,0,(360/bearingnum)*n])translate([intthickness+bearingtol+height/2,0,0]){   rotate([90,0,0])cylinder(height*1.5,height*0.45,height*0.45,center=true,$fn=6);
    }

	}

           }
for(n = [0:bearingnum-1] ) {

	rotate([0,0,(360/bearingnum)*n])translate([intthickness+bearingtol+height/2,0,0]){sphere(height/2);
    cube([height*1.5,height/1.5,height],center=true);
    }

	}

    }

        }

cage(Bearing_Radius,Bearing_Height,Bearing_Internal_Radius,Bearing_Number,Bearing_Tolerance,$fn = Definition);
```


[User]
Hey, I'm looking to design a parametric socket that can handle different drive types and socket shapes, and I'm hoping you can help me generate the OpenSCAD code for it. I want to be able to adjust a few key things: the size of the socket (across the flats), the type of socket (hex, square, or 12-point), the wall thickness of the socket, the depth, the size of the drive (e.g., 1/4", 3/8"), the wall thickness of the drive, and the tolerance between the socket and the tool, as well as the resolution. I'd like the final design to include a cylindrical socket portion and a cylindrical drive portion combined using a difference.

Basically, it should be something like the existing design here:

```
// Customizable sockets v2 Improved
// http://www.thingiverse.com/thing:1240520
// Hacked up and improved by
// by infinigrove Squirrel Master 2016 (http://www.thingiverse.com/infinigrove)
//
//
// Remix of Parametric hex socket
// http://www.thingiverse.com/thing:91496
// Originally
// by Dale Price http://www.thingiverse.com/daprice
//

// diameter of hole across-flats
socket_size = 7;
// type of socket
socket_type = 6; // [6:hex-6, 4:square-8, 12:12 point]
// wall thickness of socket
socket_wall_thickness = 3; // [1:0.5:16]
// depth of socket
depth = 10; // [5:80]
// size of drive
drive_size = 6.35; // [6.35:1/4", 9.525:3/8", 12.7:1/2", 19.05:3/4", 25.4:1"]
// wall thickness of drive
drive_wall_thickness = 3; // [1:0.5:16]
// drive and socket size tolerance
tolerance = 0.2;
// socket detail
socket_detail = 100; // [30:180]

/* [Hidden] */

tolSize = socket_size + tolerance;
inscribedSize = tolSize/0.866025;
tolDrive = drive_size + tolerance;

socketRadius = (inscribedSize+socket_wall_thickness)/2;
driveRadius = ((tolDrive*1.5)+drive_wall_thickness)/2;

difference()
{
	union()
	{
		//socket portion
		translate([0,0,(depth+1)/2])
		cylinder(h = depth + 1, r = socketRadius, center = true, $fn = socket_detail);

		//drive portion
		translate([0,0,0-((tolDrive + 1) / 2)])
		cylinder(h = tolDrive + 1, r = driveRadius, center = true, $fn = socket_detail);
	}

	//socket hole
    if (socket_type == 12){
        //12 point socket
        translate([0,0,1]) linear_extrude(height = depth, center = false) circle(r = inscribedSize/2, $fn = 6);
        rotate([0,0,30])translate([0,0,1]) linear_extrude(height = depth, center = false) circle(r = inscribedSize/2, $fn = 6);

    } else {
        // 6 or 8 point
	translate([0,0,1])
	linear_extrude(height = depth, center = false)
	circle(r = inscribedSize/2, $fn = socket_type);
       // second part for 8 point
    if (socket_type == 4)rotate([0,0,45])translate([0,0,1])
	linear_extrude(height = depth, center = false)
	circle(r = inscribedSize/2, $fn = socket_type);
    }

	//drive hole
	translate([0,0,0-(tolDrive/2)-1])
	cube(size = tolDrive, center = true);
}
```

But, I'd rather you create it all from scratch. So I want a single OpenSCAD file that defines all of these parameters at the top, does all of the math, and generates the appropriate geometry. For the socket hole, I want to use linear_extrude and a circle, and in the case of an 8-point socket to use two copies of a circle rotated 45 degrees. If `socket_type` is `12`, it should create a 12-point socket using two rotated hex shapes. I'd like to also use the `$fn` variable to control resolution, so if I pass in a variable like `socket_detail = 100`, it gets assigned to `$fn`. Also, the code should not make use of any external libraries such as MCAD or BOSL.

[Assistant]
socketv2.scad:
```
// Customizable sockets v2 Improved
// http://www.thingiverse.com/thing:1240520
// Hacked up and improved by
// by infinigrove Squirrel Master 2016 (http://www.thingiverse.com/infinigrove)
//
//
// Remix of Parametric hex socket
// http://www.thingiverse.com/thing:91496
// Originally
// by Dale Price http://www.thingiverse.com/daprice
//

// diameter of hole across-flats
socket_size = 7;
// type of socket
socket_type = 6; // [6:hex-6, 4:square-8, 12:12 point]
// wall thickness of socket
socket_wall_thickness = 3; // [1:0.5:16]
// depth of socket
depth = 10; // [5:80]
// size of drive
drive_size = 6.35; // [6.35:1/4", 9.525:3/8", 12.7:1/2", 19.05:3/4", 25.4:1"]
// wall thickness of drive
drive_wall_thickness = 3; // [1:0.5:16]
// drive and socket size tolerance
tolerance = 0.2;
// socket detail
socket_detail = 100; // [30:180]

/* [Hidden] */

tolSize = socket_size + tolerance;
inscribedSize = tolSize/0.866025;
tolDrive = drive_size + tolerance;

socketRadius = (inscribedSize+socket_wall_thickness)/2;
driveRadius = ((tolDrive*1.5)+drive_wall_thickness)/2;

difference()
{
	union()
	{
		//socket portion
		translate([0,0,(depth+1)/2])
		cylinder(h = depth + 1, r = socketRadius, center = true, $fn = socket_detail);

		//drive portion
		translate([0,0,0-((tolDrive + 1) / 2)])
		cylinder(h = tolDrive + 1, r = driveRadius, center = true, $fn = socket_detail);
	}

	//socket hole
    if (socket_type == 12){
        //12 point socket
        translate([0,0,1]) linear_extrude(height = depth, center = false) circle(r = inscribedSize/2, $fn = 6);
        rotate([0,0,30])translate([0,0,1]) linear_extrude(height = depth, center = false) circle(r = inscribedSize/2, $fn = 6);

    } else {
        // 6 or 8 point
	translate([0,0,1])
	linear_extrude(height = depth, center = false)
	circle(r = inscribedSize/2, $fn = socket_type);
       // second part for 8 point
    if (socket_type == 4)rotate([0,0,45])translate([0,0,1])
	linear_extrude(height = depth, center = false)
	circle(r = inscribedSize/2, $fn = socket_type);
    }

	//drive hole
	translate([0,0,0-(tolDrive/2)-1])
	cube(size = tolDrive, center = true);
}
```


[User]
I'd like to design a zoetrope that fits standard 11" x 1" paper strips, you know, the kind you'd print out for animations. I want it to spin on the tip of a pencil, so it needs a hub for that. I'd also like to be able to adjust various things, like how tall it is, the number of slits, and the width of the slits. Basically, I need a parametric OpenSCAD design.

Here's what I'm thinking:

*   The core should be a cylinder with a hollow center for the paper strip.
*   There needs to be a smaller cylinder that acts as the hub, with a cone shape at the top to fit the pencil.
*   The slits need to be cut out from the outer cylinder, they should be evenly spaced.
*   I'd want parameters to control the paper strip length, paper height, the number of slits, and the slit width.
*   The hub's height and the cone shape dimensions should also be parameterized. I'd expect this to be more of a conical socket rather than a cone, so it needs a cylindrical base to start with.

I'm not sure if this is best done in one file or multiple, but would prefer a structure that is easy to read and modify as I might have to come back later and tweak stuff. I'd also want to use the MCAD library if that is possible, mainly for the math functions like arc.

[Assistant]
Zoetrope.scad:
```
// Zoetrope animation device by Michael S. Scherotter

// picture strip length in mm
pictureStripLength = 281; //[250:431]

// picture strip height in mm
pictureHeight = 30; // [10:100]

// number of slits
slitCount = 10; // [6:20]

// slit width in mm
slitWidth = 7; // [2:10]

// ignore
coneHeight = 5;

createZoetrope();

module hub(hubHeight)
{
	union()
	{
		cylinder(h= hubHeight - coneHeight, r= 7);
		translate([0,0,hubHeight - coneHeight])
		{
			cylinder(r1=7, r2=0, h=5);
		};
	}
}

module insideHub(pictureHeight) {
    height = pictureHeight - 2;
    innerConeHeight = coneHeight - 1;

    union()
	{
		cylinder(r= 5, h= height - coneHeight);
		translate([0,0,height-coneHeight])
		{
			cylinder(r1= 5, r2= 0, h= coneHeight);
		};
	}
}

module slits(outerRadius, pictureHeight, slitHeight, slitWidth, slitCount)
{
    arc = 360 / slitCount;
	translate([0,0,pictureHeight])
	{
		union()
		{
			for (a=[0:arc:360])
			{
				translate([0, slitWidth / 2, 0])
				{
					rotate([0,0,a])
					{
						cube([outerRadius * 2, slitWidth / 2, slitHeight]);
					}
				}
			}
		}
	}
}

module createZoetrope () {
	innerRadius = pictureStripLength / (2 * 3.1415927);
    outerRadius = innerRadius + 2;
    slitHeight = pictureHeight;
    hubHeight = pictureHeight *0.65;

    totalHeight = pictureHeight + slitHeight;

	difference()
	{
		union()
		{
			difference()
			{
				cylinder(r= outerRadius, h= totalHeight );
				translate([0,0,2]){
					cylinder(r= innerRadius, h= totalHeight );
				};
			};
			hub(hubHeight);
		};
		insideHub(hubHeight);
		slits(outerRadius, pictureHeight, slitHeight - 4, slitWidth, slitCount);
	}
}
```


[User]
Hi! I'm looking for a custom OpenSCAD design for a shaft clamp that mounts to MakerBeam extrusions. I have a basic SCAD file that does most of the design but I need it to be fully parametric and much cleaner.

The basic idea is to have a clamp that attaches to the side of a MakerBeam profile, and holds a shaft. I'd like to be able to customize the shaft diameter, the shaft offset from the MakerBeam, the MakerBeam extrusion profile, and the overall size of the clamp.

Specifically, I need the following parameters to be configurable:

*   **`makerbeam_width`**: The width of the MakerBeam profile, which in this case is 10mm. I want this to be parametric so I could use it on different extrusion sizes like 15mm or 20mm. Note that the MakerBeam has a specific cross section - there are slots cut in on both sides of the extrusion. I'd like to be able to adjust this cross section in the parameters as well.
*   **`makerbeam_height`**: The height of the MakerBeam profile - which may not be equal to `makerbeam_width`.
*   **`shaft_diameter`**: The diameter of the shaft to be clamped.
*   **`shaft_offset`**: The distance from the edge of the MakerBeam extrusion to the center of the shaft.
*  **`clamp_thickness`**: The overall thickness of the clamp body.
*   **`hole_diameter`**: The diameter of the mounting holes for attaching the clamp to the MakerBeam. This will be used in a mirrored fashion on both sides of the mount for secure attachment. I'd also like to parameterize the position of the holes and how many there are.
*   **`bolt_clearance`**: The clearance diameter around the mounting holes for bolts.
*   **`bolt_diameter`**: The diameter of the mounting bolt heads, for generating cutouts.
*   **`fillet_radius`**: A radius parameter for filleting/chamfering the edges to increase print quality.

I want this to be a modular design that I can easily modify and customize further. I'm thinking I'd need to use libraries for this; could you use MCAD for standard shapes and BOLTS for the screws and nuts? I'm imagining this being set up using a main `.scad` file that defines the parameters, and then includes additional `.scad` files for the individual parts. Let me know if you need any clarification.

[Assistant]
MakerBeam_8mm_Clamp.scad:
```
module mb_profile()
{
    translate([0, 3, 0]) rotate([180, 0, 0]) difference()
    {
        cube([1, 3.5, 1]);
        translate([-1, 0, 0]) rotate([45, 0, 0]) cube([5, 3.5, 2]);
        translate([-1, 3.5, 0]) rotate([-45, 0, 0]) translate([0, -3.5, 0]) cube([5, 3.5, 2]);

    }

}

hole_c = 11;
hole_r = 4.2;
base_w = 27;
base_t = 10;

difference() {
    union() {
        hull() {
            cube([base_w, base_t, hole_c + 1]);
            translate([base_w / 2, 0, hole_c]) rotate([-90, 0, 0]) cylinder(r=hole_r + 2, h=base_t);
        }
        translate([0, 3.75, 0]) scale([base_w, 1, 1]) mb_profile();
    }
    translate([base_w / 2, -1, hole_c]) rotate([-90, 0, 0]) cylinder(r=hole_r, h=base_t + 2, $fn=20);
    translate([-1, -1, hole_c - 1]) cube([base_w / 2, base_t + 2, 1]);
    translate([5, base_t / 2, -3]) cylinder(r=1.65, h=hole_c * 2, $fn=16);
    translate([5, base_t / 2, hole_c + 2]) cylinder(r=4.1, h=hole_c * 2, $fn=16);
    translate([base_w - 5, 5, -3]) cylinder(r=1.65, h=hole_c * 2, $fn=16);
    translate([base_w - 5, 5, hole_c + 2]) cylinder(r=4.1, h=hole_c * 2, $fn=16);
}
```


[User]
I'm looking for an OpenSCAD design for a simple pen/marker holder that I can 3D print. I've already made one, but I'd like to start fresh and have something more flexible. I need it to be parametric so I can adjust it for different pens and mounting options.

Here's how the current one is built: It has a rectangular base with a C-shaped clip that holds the pen. The C-clip is formed by subtracting a smaller circle from a larger one, and then using a pie slice to create the opening. There's also a small circle added to the clip's opening to make it more flexible, kind of like a living hinge. The C clip is positioned at the center of the base, and everything is extruded to make it 3D.

Here are the parameters I want to be able to adjust:
*   `baseWidth`: The width of the rectangular base.
*   `baseLength`: The length of the rectangular base.
*  `baseThickness`: The thickness of the rectangular base.
*   `ID`: The inner diameter of the pen holder (the hole).
*   `clipThickness`: The thickness of the C-shaped clip.
*   `clipAngle`: The angle of the opening in the C-shaped clip.

I don't need the circle detail ($fn) to be parametric - let's keep that at 200.

I'd like to be able to adjust each parameter and see the pen holder change. Also, since it's going to be 3D printed, I want the design to be simple and easy to print without supports.

I don't need any advanced features, just a solid, functional pen holder that is fully customizable using those parameters. I don't need any dependencies on any external libraries - I just want standard OpenSCAD code.

I am looking for you to generate all of the SCAD code, I do not have it yet.

[Assistant]
penclip.scad:
```
// Width of base
baseWidth = 15;
// Length of base
baseLength = 25;
// Thickness of base
baseThickness = 2;

// Inner diameter for holding pen/marker
ID = 12.5;
// Thickness of C shaped clip
clipThickness = 1.6;
// Angle of opening in C shaped clip
clipAngle = 135;
// Circle detail (number of vertices)
$fn = 200;

OD = ID+clipThickness*2;

linear_extrude(baseLength) union() {
  translate([-baseWidth/2, 0]) square([baseWidth, baseThickness]);

  translate([0,ID/2+baseThickness]) {
    difference() {
      circle(d=OD,h=baseLength, center=true);
      circle(d=ID,h=baseLength+2, center=true);
      translate([0,0,-(baseLength+2)/2])
        rotate(90) pieSlice(OD, clipAngle);
    }

    R = (OD + ID)/4;
    d = (OD - ID)/2;
    rotate(90) mirrorY() translate([R*cos(clipAngle/2),R*sin(clipAngle/2)])
      circle(d=d, h=baseLength);
  }

}

module pieSlice(r,a) {
  x = r*cos(a/2);
  y = r*sin(a/2);
  if (a > 180)
    polygon([[0,0],[x,y],[x,r],[r,r],[r,-r],[x,-r],[x,-y]]);
  else
    polygon([[0,0],[x,y],[r,y],[r,-y],[x,-y]]);
}

module mirrorX() {
  for (i=[0:1]) mirror([i,0]) children();
}

module mirrorY() {
  for (i=[0:1]) mirror([0,i]) children();
}

module mirrorXY() {
  for (i=[0:1], j=[0:1]) mirror([i,0]) mirror([0,j]) children();
}

module mirrorZ() {
  for (i=[0:1]) mirror([0,0,i]) children();
}

```


[User]
I'd like a parametric OpenSCAD design for a shark bookmark. The basic idea is a shark outline with a bite taken out of it, and then the option to add a name to the side.

The bookmark itself should be a flat shape, extruded to a specified thickness. The shark outline is kind of a cartoony, jumping shark shape. The "bite" should be another shape, like a chunk taken out of the side of the shark, so it gives the appearance of teeth marks.

I'd like to be able to control a few things:

*   **Bookmark Thickness:** A parameter to adjust how thick the extruded bookmark is (let's call it `bookmark_thickness`). I would like to be able to adjust it in the range of 1-10 mm, and it should default to 2mm.

*   **Name:** A string parameter to add a name to the side of the bookmark (let's call it `name`). It should default to "None" and I don't want it to render if this is the value.

*   **Font Size:** The font size should be automatic and should adjust based on the length of the name string, call the parameter `text_size`, and let's have it range from 5mm to 20mm. The formula should be that the text size should be `8 / (string_length/6.5)` or some other reasonable formula.

*   **Text Position:** The text needs to be positioned on the bookmark. It should be extruded to the same height as the bookmark and the X-position of the text should also be controlled by the length of the name, call the parameter `text_translate`. Use the same length as before multiplied by 1.25. The vertical position should be fixed, say at 215.0 (it's where it worked before), and it should be centered on the bookmark thickness.

I'd like to be able to use a DXF for the shark outline and the bite marks as those files were previously created. Let's call the shark outline file "shark_outline.dxf" and the bite marks "shark_teeth.dxf". I won't include them here but assume they're available.

I'd like to use the `linear_extrude` and `text` primitives.

Also, please generate a single .scad file containing all the code, rather than multiple files, thanks!

[Assistant]
shark_bookmark.scad:
```

/* [Global] */

//Bookmark Height in mm
h=2; // [1:10]

s="None"; // [None,James,John,Robert,Michael, William,David,Richard,Charles,Joseph,Thomas,Christopher,Daniel,Paul,Mark,Donald,George,Kenneth,Steven,Edward,Brian,Ronald,Anthony,Kevin]

l=len(s);

// Text font size
text_size=8/(l/6.5); // [5:20]

// Amount to translate text by
text_translate=l*1.25; // [1:20]

difference() {
    linear_extrude(height=h) {
        import("shark_outline.dxf");
    }

    linear_extrude(height=h) {
        import("shark_teeth.dxf");
    }

    if (s != "None") {
    //translate([l*1.25, 215.0, h/2])
    translate([text_translate, 215.0, h/2])
        linear_extrude(height=h) {
            //text(s, size=8/(l/6.5));
            text(s, size=text_size);
    }
    }
}

```


[User]
Hey, I'm looking to create a customizable chuck design in OpenSCAD. I need a chuck that can grip a cylindrical object and be mounted with screws. I'd like the design to be fully parametric so I can easily adjust the dimensions.

Here's a breakdown of the features I need:

1.  **Grip:** A simple cylinder that acts as the gripping mechanism. This needs parameters for:
    *   `grip_diameter` (diameter of the cylinder)
    *   `grip_height` (height of the cylinder)

2.  **Chuck Body:** The main body of the chuck, which is a hollow cylinder with mounting holes. I need to specify:
    *   `chuck_outer_diameter` (outer diameter of the cylinder)
    *   `chuck_inner_diameter` (inner diameter of the cylinder)
    *   `chuck_height` (height of the cylinder)
    *  The `chuck_inner_diameter` should be smaller than the `chuck_outer_diameter`.
    *   The inner cylinder of the chuck should be shortened so that the inner cylinder does not protrude from the outer cylinder. Specifically, if the outer diameter of the chuck is `cdo`, and the inner diameter of the chuck is `cdi`, then the inner cylinder should have a height of `ch - (cdo-cdi)`.

3.  **Mounting Holes:** A series of holes around the circumference of the chuck for mounting screws. I need parameters for:
    *   `screw_hole_diameter` (diameter of the screw holes)
    *   `number_of_screw_holes` (number of screw holes)
   * The holes should be arranged in a radial pattern evenly spaced along the circumference of the chuck body.

4.  **Assembly:** The grip should be positioned on top of the chuck body, aligned on the Z-axis. The grip should be positioned so that the base of the grip starts where the top of the chuck begins.

Could you generate the OpenSCAD code for this? I'm fine with just the single .scad file; I don't need separate files or anything. Also, I'm not using any special libraries so you don't need to worry about that.

[Assistant]
chuck.scad:
```
/*NON self centering chuck Feb 2016 Glyn Cowles */
// diameter of grip
hd=20;
// grip height
ht=20;
//outside diameter of chuck
cdo=60;
// inside diameter of chuck
cdi=50;
// chuck height
ch=50;
// diam of screw holes
hold=7;
// number of screw holes
nsh=4;

$fn=50;
assemble();

//-------------------------------------------------
module assemble() {
    grip();
    translate([0,0,-ch]) chuck();
}

//-------------------------------------------------
module grip() {
     cylinder(d=hd,h=ht);
}
//-------------------------------------------------
module chuck() {
    n=cdo-cdi;
    difference() {
     cylinder(d=cdo,h=ch);
     cylinder(d=cdi,h=ch-n);
     #translate([0,0,cdi/2]) holes();
    }
}
//-------------------------------------------------
module holes() {
    p=360/nsh;
    for (i=[0:nsh-1]) {
        rotate([i*p,90,0]) cylinder(h=cdo/2,d=hold);
    }
}
//-------------------------------------------------

```


[User]
I need a replacement part for my Tancarville clothes dryer. I've got a basic design in mind, but I need it to be parametric so I can adjust the dimensions if needed.

The part is essentially three cylinders arranged in a triangle, connected by some thick rectangular sections. Here are the details, and I'll use letters to refer to the dimensions, as I'll need to be able to adjust all of these.

*   **a**: The distance from the center to the center of each cylinder.
*   **b**: The outside diameter of the cylinders.
*   **c**: The inside diameter of the cylinders.
*   **e**: The height of the part.

The cylinders are arranged so that one is directly below the center point, and the other two form the other two vertices of an equilateral triangle with the first cylinder.

The rectangular connecting sections should extend from the outside of each cylinder and meet the other. They should have a thickness equal to (b-c)/2, or half the difference between the inside and outside diameter of the cylinders.

Each cylinder needs to have an inner bore, with an inner cylinder of diameter 'c' running the entire height of the part. The inner cylinder needs to extend slightly out of each end of the part on the ends of two of the outer cylinders, and the third cylinder. The inner bore on two cylinders is to be tapered a little on one end, the third should be tapered on both ends. On two cylinders, the bore needs to be tapered at the top end with a diameter of 'c+3' and a height of 3. On the third cylinder, it should be tapered at the bottom with a diameter of 'c+3' and a height of 3, and at the top with a diameter of '0' and a height of 3.

Could you please create a parametric OpenSCAD file that lets me adjust 'a', 'b', 'c', and 'e' to change the dimensions of this part? I'd prefer that any complex math be done within the file itself (e.g. no pre-calculated distances) if possible. I don't have any preferences about which libraries are used.

[Assistant]
sechoir.scad:
```
/* [Hidden] */
$fn=50;

/* [Parameters] */
// Cylinder distance from center
a=8;
// Outside diameter
b=12;
// Inside diameter
c=8;
// Height
e=30;

difference(){
    union(){
        translate([a*sqrt(3)/2,a/2,0]) cylinder(d=b,h=e);
        translate([-a*sqrt(3)/2,a/2,0]) cylinder(d=b,h=e);
        translate([0,-a,0]) cylinder(d=b,h=e);
        translate([-a*sqrt(3)/2,0,0]) cube([a*sqrt(3),(a+b)/2,e]);
        rotate(v=[0,0,1],a=120) translate([-a*sqrt(3)/2,0,0]) cube([a*sqrt(3),(a+b)/2,e]);
        rotate(v=[0,0,1],a=-120) translate([-a*sqrt(3)/2,0,0]) cube([a*sqrt(3),(a+b)/2,e]);
    };
    translate([a*sqrt(3)/2,a/2,7]) cylinder(d=c,h=e);
    translate([a*sqrt(3)/2,a/2,e-2]) cylinder(d1=c,d2=c+3,h=3);
    translate([-a*sqrt(3)/2,a/2,7]) cylinder(d=c,h=e);
    translate([-a*sqrt(3)/2,a/2,e-2]) cylinder(d1=c,d2=c+3,h=3);
    translate([0,-a,-7]) cylinder(d=c,h=e);
    translate([0,-a,-1]) cylinder(d2=c,d1=c+3,h=3);
    translate([0,-a,e-7]) cylinder(d1=c,d2=0,h=3);
};
```


[User]
Hey, I'm looking to get a parametric OpenSCAD design for clamp heads. I've been playing around with some code, but I think it would be better if it were done properly with parameters for different clamp sizes. I'm hoping to have a flexible design I can customize.

Essentially, I need a clamp head that's a rectangular pad with a few cutouts. The pad itself should have parameters for its thickness, width (x-dimension), and height (y-dimension). There's a few specific shapes that should be removed to get the final shape, and I'm including the basic structure from my attempt, but I need the code to use more parametric inputs and be generated from scratch.

I'd like to have a rectangular cutout in the center of the main pad, and then another rectangular cutout in the center of _that_ cutout, but offset slightly on the x-axis. Finally, there should be a third rectangular cutout, again offset on the x-axis that goes through the bottom face of the pad.

Ideally, each of these cutouts should also have parametric dimensions for their width, height and z-axis position. So for example, the first cutout would have its own width, height, and its depth should be variable as well as its offset on the x-axis. The second and third cutouts should have similar parameters for their dimensions and position within the head.

I'm not really worried about the color of the parts; I just threw them in for visualization purposes. I'm hoping I can get this as a single .scad file without using any extra libraries other than the standard OpenSCAD functions.

[Assistant]
Head.scad:
```

pad_thickness = 10; //[10:10]
pad_x = 35; //[32:0.5:150]
pad_y = 30; //[26:0.5:150]

difference() {

    difference() {
        translate ([pad_x/2- pad_x + 15,0,0])
            color ("blue")
                cube([pad_x,pad_y,pad_thickness], center=true)
        ;

        translate ([0,0,0.5])
            color ("red")
                cube([33,26,6], center=true)
        ;

        translate ([2.5,0,pad_thickness/3.5])
            color ("Orange")
                cube([28,21,pad_thickness / 2 + 5], center=true)
        ;
    }

    difference() {
        translate ([pad_x/2 - pad_x + 12.6,0,pad_thickness/2 - 2.5])
            color ("yellow")
                cube([pad_x + 5,pad_y + 5,pad_thickness], center=true)
        ;

        translate ([-1,0,pad_thickness/2 - 2.5])
            color ("Aqua")
                cube([33,28,pad_thickness], center=true)
        ;
    }
}
```