[User]
I need a design for some chair leg protectors, basically little feet that will keep my metal patio chairs from rusting when they sit on my stone terrace. I have a basic design in mind, but I need it to be parametric so I can adjust it for different chair legs later.

The protectors should look like a short cylinder or puck with a smaller cylinder inside, creating a wall. The chair leg will fit inside that inner cylinder. There should be a bottom to the whole thing, so it sits flat on the terrace and keeps the chair leg off the stone.

Here are the basic parameters I'm thinking of, with some example dimensions:

*   `height`: The total height of the protector (e.g., 20mm)
*   `wall`: The thickness of the wall around the chair leg (e.g., 3mm)
*  `ground_thickness`: The thickness of the bottom part that rests on the ground (e.g., 4mm)
*   `chair_thickness`: The diameter of the chair leg that will fit inside (e.g., 17.2mm)
*   `chair_width`: The center-to-center distance between the chair legs. For my example chair, this is 43.2mm.

I also need it to be able to handle a range of leg widths, not just this chair. Can you create an OpenSCAD file for this, using the `hull()` function like I do? That seems to create smooth transitions between the outer shape. Please use `$fn=50;` for the number of facets when creating the circles. I'd like it to be a single file.

[Assistant]
chair_repair.scad:
```
//Bumper height
height=20;

//Wall
wall=3;

//Ground
ground_thickness=4;

//chair thickness
chair_thickness=17.2;

//chair width
chair_width=43.2;

/*hidden*/
$fn=50;

difference() {

//aussen
	hull() {
	cylinder(h=height,d=chair_thickness+wall*2);
		translate([chair_width-chair_thickness,0,0])
			cylinder(h=height,d=chair_thickness+wall*2);
	}

//innen
	hull() {
	translate([0,0,ground_thickness])
	cylinder(h=height,d=chair_thickness);
		translate([chair_width-chair_thickness,0,ground_thickness])
			cylinder(h=height,d=chair_thickness);

	}
			cylinder(h=height,d=2);
			translate([chair_width-chair_thickness,0,0])
				cylinder(h=height,d=2);

}
```


[User]
Hi, I'm looking to create a customizable set of building models in OpenSCAD, inspired by Hong Kong's residential architecture. I want to be able to generate different building shapes, heights, and add some optional features. I've been playing around a little bit and have a rough idea what I want the final product to look like (I've attached what I have so far: Hk_residental_custom4.scad). But ultimately, I want something more flexible and easier to use.

The core structure should be based on a repeating module that can form the basis of several building "types." I'd like to be able to specify:

*   **Level/Height:** The number of floors in the building.
*   **Side Length:**  The number of repeating modules along each side of the building.
*   **Building Type:** The general shape of the building, such as a Y-shape, a 4-sided block, or even a hexagonal shape.
*   **Roof Height:** A value for the height of the roof structure.
*  **Water Tower:** an option to add or remove a water tower on the top of the structure.

The building "modules" will have a fairly standard layout, with what I think of as "rooms" and maybe "corridors". There should be some distinction made between the "inside" and "outside" of the building, to give it a more realistic look. I'm imagining the building will grow "upward", by repeating the layout, but that there will be a separate roof module, that should get added to the final level of the building. The bottom layer should also be a separate "base" with a simple shape (likely based on the building type).

I would also like to have the following characteristics for each building type:
*   **Type 2:** a block-shape with mirrored modules on each side.
*   **Types 3 through 6:** a shape made by repeating identical shapes around a central point.

The design should be parametric. That means that I'd like to adjust any of these parameters and have the model automatically update, so that I can explore different configurations.

For the final result, could you break it up into more than one file? That way the modules can be more easily modified and reused. And please include comments to explain how each part of the code works. I'm still kind of new at this. I'm not using any libraries right now, but feel free to use any external libraries that may be helpful. I have seen some people use libraries like BOSL and MCAD, if those are useful for this project.

[Assistant]
Hk_residental_custom4.scad:
```
/* [Global] */
// Level of building
level=8; //[1:100]
// how many room in each side
sidelong=1; //[1:10]
// Type Y, type 4? or even hexagon?
type=4; //[1:6]
roofHeight=3; //[0:5]
// Water tower on the top?
watertower=0; //[0:Need,1:No water tower]

/* [Hidden] */

module roofPside(){
    translate([0.3,0.1,0]) rotate( [0,0,-10] )
    cube([6,4,roofHeight]);
        translate([6,-1,0]) cube([1,6,roofHeight]);
        translate([0,0,0])cube([1,5,roofHeight]);

    translate([1,2,0]) cube([5,3,roofHeight]);
}

module roofP(){
#translate([5,0,0]){
translate([0,0,0]) roofPside();
translate([18,0,0])  mirror([1,0,0]) roofPside();
}
}

module room(end){
translate([0,0,0])cube([1,5,4]);
translate([6,-1,0]) cube([1,5,4]);

translate([0.3,0.1,0]) rotate( [0,0,-10] ) cube([6,4,1.4]);

translate([1,1.5,0]) cube([3,1,4]);
translate([3.5,0.5,0]) cube([2.5,1,4]);

        if(end==true)
                {
                    translate([0,0,4]) {
                        roofPside();
                        translate([0,5,0])cube([7,2.5,roofHeight]);
                        if(type==1){
                            translate([0,0,-4*level-roofHeight+1]) {
                            roofPside();
                            translate([0,5,0])cube([7,2.5,roofHeight]);
            }       }
    }
}
}

module inside(end){
translate([0,4,0])cube([4,1,4]);
translate([0,2,0])cube([4,3,1.4]);
translate([0,2,0])cube([1,3,4]);
    if(end==true){
        translate([0,2,4]) cube([4,3,roofHeight]);
        translate([-1.5,4,4]) cube([1.5,1,roofHeight]);
        translate([-1.5,5,4]) cube([5,2.5,roofHeight]);
        if(type==1){
          translate([0,0,-4*level-roofHeight+1]) {
        translate([0,2,4]) cube([4,3,roofHeight]);
        translate([-1.5,4,4]) cube([1.5,1,roofHeight]);
        translate([-1.5,5,4]) cube([5,2.5,roofHeight]);
          }
        }
    }
}

module row(end){
translate([9.5,4,0]) cube([6,1,4]);
translate([21.5,0,0]) mirror([1,0,0]) room(end);

if(end==true)
    {
translate([10.5,3,4]) cube([4,2,roofHeight]);
  translate([10.5,5,4]) cube([4,2.5,roofHeight]);
      if(type==1){
          translate([0,0,-4*level-roofHeight+1]) {
          translate([10.5,3,4]) cube([4,2,roofHeight]);
  translate([10.5,5,4]) cube([4,2.5,roofHeight]);
              }
      }
}
}

module rowMirror(end,close){
translate([-1.5,4,0]) cube([6,1,4]);
translate([3.5,0,0]) room(end);

    if(end==true && close==1)   {
    translate([21.5,3,4]) cube([4,2,roofHeight]);
    translate([21.5,5,4]) cube([4,2.5,roofHeight]);
            if(type==1){
                translate([0,0,-4*level-roofHeight+1]) {
                translate([21.5,3,4]) cube([4,2,roofHeight]);
    translate([21.5,5,4]) cube([4,2.5,roofHeight]);
                }
        }
    }
}

module halfside(end){

    inside(end);
for (i=[1:sidelong]) {
translate([(i-1)*22,0,0]) row(end);

    if (i==sidelong){
translate([(i-1)*22,0,0]) rowMirror(end,0);
    }
    else{

       translate([(i-1)*22,0,0]) rowMirror(end,1);
    }
}
}

module fullside(end){
    translate([9,-7.5,0]){

translate([(sidelong-1)*22,0,0]){
translate([19,5,0]) cube([2,5,4]);
translate([21,5,0]) cube([2,5,0.8]);
translate([21,5,3]) cube([2,5,1]);
translate([21,5,0]) cube([2,1,3]);
translate([21,9,0]) cube([2,1,3]);
}
 translate([1.5,0,0]){
halfside(end);
translate([0,15,0]) mirror([0,1,0])halfside(end);
}
}
}

//translate([-9,7.5,0]) fullside();
//MAIN

scale(0.37){

//base
if(type>2){
for (i=[1:type]) {
rotate([0,0,360/type*i]) translate([0,-9,-1.5]) cube([32.5+22*(sidelong-1),18,1.5]);
rotate([0,0,360/type*i]) translate([0,-7.5,-5]) cube([32+22*(sidelong-1),15,3.5]);
}}
if(type==2){
    mirror([1,0,0]) translate([-9,-9,-1.5]) cube([20.5+22*sidelong,18,1.5]);
    rotate([0,0,-90]) mirror([1,0,0]) translate([-9,-9,-1.5]) cube([20.5+22*sidelong,18,1.5]);
    mirror([1,0,0]) translate([-8,-8,-5]) cube([18.5+22*sidelong,16,3.5]);
    rotate([0,0,-90]) mirror([1,0,0]) translate([-8,-8,-5]) cube([18.5+22*sidelong,16,3.5]);
}

//core structure
for (j=[1:level]) {
    translate([0,0,4*(j-1)]){

        if(type>2)
                cylinder(r=10, h=4, $fn=type);

        if(type==2){
                mirror([1,0,0]) translate([-5,-5,0]) cube([14,9,4]);
               rotate([0,0,90]) mirror([1,0,0]) translate([-9,-5,0]) cube([14,9,4]);}

    if(type==2){
        for (i=[1:type]) {
            if (j==level) {
                rotate([0,0,90*i]) fullside(true);
                translate([-10,-5.5,4]) cube([15,10,roofHeight]);
                rotate([0,0,90]) translate([-5.5,-5.5,4]) cube([15,10,roofHeight]);
            }
            rotate([0,0,90*i]) fullside(false);
        }
        }
    else{
        for (i=[1:type]) {
            //roof floor
                if (j==level) {
                    rotate([0,0,360/type*i]) fullside(true);
                if(type>2){
                    translate([0,0,4]) cylinder(r=16.5, h=roofHeight, $fn=type);}
                    }
                else{
                    rotate([0,0,360/type*i]) fullside(false);
                    }
                    rotate([0,0,360/type*i]) translate([9,-2.5,0]) cube([1,5,4]);
            if(j%3==0 && type!=1)
                cylinder(r=14, h=2, $fn=type);
        }
    }}
}

//watertower

if (watertower==0 && type!=1 ){
translate([0,0,4*level+roofHeight]) {
    if(type==2){
        translate([-9,-3,0]) cube([14,6,6]);
        rotate([0,0,90]) translate([-2,-3,0]) cube([14,6,6]);
        rotate(360/2,0,0) translate([9,-4,0]) cube([3.5,8,8]);
        rotate(360/4,0,0) translate([9,-4,0]) cube([3.5,8,8]);
        translate([-2.5,-2.5,6]) cube([6,6,1]);
    }else{
cylinder(r=10, h=6, $fn=type);
translate([0,0,6]) cylinder(r=6, h=2, $fn=60);}

if (type!=2){
for (i=[1:type]){
rotate(360/type*i,0,0) translate([9,-4,0]) cube([3.5,8,8]);
 rotate(360/type*i,0,0) translate([4,-2.5,6]) cube([6,5,1]);
}
}

}
}
}

```


[User]
I'd like to design a customizable pipe-like structure that's made by combining two washers. The basic idea is that I have two washers with separate dimensions, and I can control their offset along the z-axis.

Here's the breakdown of what I want to be able to customize:

1.  **Solid Washer Dimensions:**
    *   `solidInner`: Inner diameter of the first "solid" washer.
    *   `solidOuter`: Outer diameter of the first "solid" washer.
    *   `solidThickness`: Thickness of the first "solid" washer.

2.  **Hollow Washer Dimensions:**
    *   `hollowInner`: Inner diameter of the second "hollow" washer.
    *   `hollowOuter`: Outer diameter of the second "hollow" washer.
    *   `hollowThickness`: Thickness of the second "hollow" washer.

3.  **Offset:**
    *   `offset`: The z-axis offset between the first (solid) washer and the second (hollow) washer. Positive values move the hollow washer up, negative move it down.

The final output should be a union of these two washers, with the second washer translated by the specified offset.

The structure is made from two washers stacked on top of each other with a given offset. The first washer should be solid while the second should be hollow.

Could you generate an OpenSCAD file (or files, if needed for modules) for this? I'd prefer if the code used the default OpenSCAD libraries only, I'm not using any external libraries at this time.

[Assistant]
Parametric_Pipe.scad:
```
// inner diameter
solidInner = 6;

// outer diameter
solidOuter = 12;

// thickness
solidThickness = 1;

// inner diameter
hollowInner = 8;

// outer diameter
hollowOuter = 10;

// thickness
hollowThickness = 10;

// offset
offset = -6;

module washer (inner, outer, thickness) {

    difference() {
        cylinder(d=outer, h=thickness, $fn=60);
        translate([0,0,-thickness])
        cylinder(d=inner, h=thickness*3, $fn=60);
    };
}

union() {
    washer (solidInner, solidOuter, solidThickness);
    translate ([0,0,offset]) washer (hollowInner, hollowOuter, hollowThickness);
}
```


[User]
Hey, I'm looking to get a parametric OpenSCAD file, or maybe a few, that can generate the Open Source Hardware logo. I want to be able to specify the overall diameter of the logo and have everything scale appropriately.

The logo itself consists of a main circle, seven gear teeth around the circumference, and a central cutout that looks like two intersecting squares. The gear teeth are, from what I can tell, polygons with 4 points. The cut-out should be an intersection of two squares, each rotated 40 degrees from one another (20 from center either direction).

I’m not super familiar with the math for scaling, but from the example I saw, it seems like the gear teeth have a height of 10.0/72.0 of the diameter from the central circle’s edge, and the gear_tooth base is 0.5*d along the x axis; I assume that translates to the same along the y axis, but I don't know. The internal circle has a diameter of 10/36 of the main circle. The squares used for the internal cutouts are scaled to a side length of 10/18 of the total diameter.

The output should be a 2D shape, and I would like to be able to specify a diameter. I’ll extrude it myself later. I don't need to have any extra functionality other than this. I don't need it to be centered on the origin either, so that can be at the bottom left corner. I don’t expect to be doing much in the way of advanced features, so it's unlikely I need any external libraries, but if you do decide you need one, please specify which.

[Assistant]
oshw.scad:
```
// OSHW Logo Generator
// Open Source Hardware Logo : http://oshwlogo.com/
// -------------------------------------------------
//
// Adapted from Adrew Plumb/ClothBot original version
// just change internal parameters to made dimension control easier
// a single parameter : logo diameter (millimeters)
//
// oshw_logo_2D(diameter) generate a 2D logo with diameter requested
// just have to extrude to get a 3D version, then add it to your objects
//
// cc-by-sa, pierre-alain dorange, july 2012

module gear_tooth_2d(d) {
	polygon( points=[
			[0.0,10.0*d/72.0], [0.5*d,d/15.0],
			[0.5*d,-d/15.0], [0.0,-10.0*d/72.0] ] );
}

module oshw_logo_2d(d=10.0) {
	rotate(-135) {
		difference() {
			union() {
				circle(r=14.0*d/36.0,$fn=20);
				for(i=[1:7]) assign(rotAngle=45*i+45)
					rotate(rotAngle) gear_tooth_2d(d);
			}
			circle(r=10.0*d/72.0,$fn=20);
			intersection() {
	  			rotate(-20) square(size=[10.0*d/18.0,10.0*d/18.0]);
	  			rotate(20)  square(size=[10.0*d/18.0,10.0*d/18.0]);
			}
    		}
  	}
}

// usage : oshw_logo_2d(diameter)

linear_extrude(height=2)
	oshw_logo_2d(25);

```


[User]
Hey, I'm trying to design a two-part enclosure for a JDS Labs CmoyBB headphone amplifier kit and would like some help creating a parametric OpenSCAD file. I've got some basic dimensions already, but I really want the design to be flexible. The current version I have is pretty hardcoded, so I'd like to make it fully parametric if possible.

Here's the basic idea: it should have two halves that fit together, a top and a bottom. The enclosure should accommodate the following internal board dimensions (these need to be params, and might be slightly bigger than the board):
- Board width (x): 50 + slop mm
- Board depth (y): 39.15 + slop + tab_allowance mm (where tab_allowance is space for the tabs)
- Board height (z): 16.37 mm
- Battery space depth: 25.85 mm (this gets added to the board depth and should be parametric)

I want the enclosure to have a rounded shape, so let's use a Minkowski sum of a sphere and the bounding box of the internals to create the outside shape.  We'll then cut out the interior and any holes using `difference()`. The `slop` value should be parametric. Additionally, a value for `wall_thickness` is required and should be used for the offset in the Minkowski and when the inside is cut away. The `minkowski()` sphere radius should also be parametric.

There should also be some tabs on the top, bottom, and sides to help keep the two halves together. The tabs don't have to be too fancy, just rectangular blocks on the inside of the enclosure with parametric `tab_height`, `tab_width` and `tab_length`.

The holes I need on the top are for the power switch and the volume potentiometer. These positions need to be parametric so they can be adjusted. There should also be holes on the side for the audio input and headphone output jacks, and those need to be parametric too.

I'm not sure how to express this all parametrically, but I imagine the module calls will be along the lines of:
*   `inside()` to describe the interior bounding box. This should also take the `slop` as an argument.
*   `outside()` to create the outer rounded shape using `minkowski()`.  This takes the `sphere_radius` and a parameter for the `wall_thickness` as arguments.
*   `shell()` to create the actual enclosure by subtracting the inside from the outside, then applying the holes.  It should take `sphere_radius` and `wall_thickness` as arguments.
*   `holes()` to create all the holes for the various connectors and switches, positions should be parametric.
*   `tabs()` to make the rectangular tabs. This should take the `slop` argument as well.
*   `whole()` to bring everything together and make it modular.

I think using `difference()` for the whole thing is probably fine, but also subtracting out a cube that extends from the baseplate so that it doesn't render anything that would be intersecting with the printing bed.

I'm not particularly familiar with any external libraries, but I would prefer to avoid them. If there are some that would make this easier to implement though, I am open to using them, especially if they would make any of the parametric dimensions easier to manage, so just let me know what they are and I'll take a look. I hope that makes sense!

[Assistant]
cmoybb.scad:
```
$fn=48;
slop = 1;
wall_thickness = 2;

//board diameters
x = 50 + 3;
y = 39.15 + 3 + 2; // 2 cuz we need room for the tab
z = 16.37;

//battery
y_battery = 25.85;

//computed val

module inside(slop){
    cube([x + slop, y + y_battery + slop, z + slop]);
}

module outside(r,x){
    minkowski(){
        sphere(r=r);
        inside(-x);
    }
}

module shell(r,s){
    difference(){
        translate([s,s,s]) outside(r,s);
        inside(s);
        holes();
    }
}

module holes(){
    rotate([90,0,0]) translate([10,10.3,0]) cylinder(d=8,h=20);
    rotate([90,0,0]) translate([10 + 15.5,9.3,0]) cylinder(d=6.5,h=20);
    rotate([90,0,0]) translate([10 + 15.5 + 12.5,9.3,0]) cylinder(d=6.5,h=20);

    rotate([0,90,0]) translate([-8.5,16,50]) cylinder(d=6.5,h=20);
    rotate([0,90,0]) translate([-6.3,16 + 14.25,50]) cylinder(d=6,h=20);
}

module tabs(slop){
    height = 10;
    width = 2;
    length = 5;

    // top
    translate([0, (y + y_battery + slop)/2 + 2, (z - height)/2]) cube([width,length,height]);
    // bottom
    translate([(x + slop) - width, (y + y_battery + slop)/2 + 2, (z - height)/2]) cube([width,length,height]);
    // right
    translate([(x + slop - length) / 2, y + y_battery + slop - width, (z - height)/2]) cube([length, width, height]);
}

module whole(){
    r = 1;
    difference(){
        shell(3, r);
        //translate([-100,34,-100]) cube([1000,1000,1000]);
        translate([0,0,0]) cube([1000,1000, 17.37], center = true);
        //translate([0,0,17.37]) cube([1000,1000, 17.37], center = true);
    }
    //tabs(r);
}

whole();
```


[User]
I need an OpenSCAD file, or maybe a few, to make a customizable holder for a chuck key, or really anything cylindrical. I've got an existing design that I made in Tinkercad, and then I did a simple SCAD version too, but I want to make it more flexible and robust.

The basic idea is this: it's a roughly hemispherical holder with a cylindrical cutout to hold the chuck key (or whatever). And I want a recess in the bottom for a magnet so I can stick it to a metal surface. I think the best way to do this would be to start with a sphere, cut away the top half, and then subtract the cylinder and magnet recess.

Here are the key parameters that I need to be able to customize:

*   `d_sphere`: The diameter of the overall sphere from which the holder will be based.
*   `d_hole`: The diameter of the cylindrical hole for the key (or whatever)
*  `h_hole`: The vertical distance between the bottom of the sphere and the bottom of the cylindrical hole.
*  `d_magnet`: The diameter of the magnet recess.
* `h_magnet`: The depth of the magnet recess.

I'd like to be able to adjust all of these. The SCAD code I have as a starting point for reference uses simple primitives: `sphere`, `cube`, and `cylinder`. I don't need anything fancy or any included libraries unless you think they are essential, but keep it modular and easy to read if possible.

Could you generate the OpenSCAD code for this? Thanks!

[Assistant]
Customizable_holder_0.5.scad:
```
//Customizable_holder.scad v0.5
//by Benjamen Johnson

// GNU General Public License, version 2
// http://www.gnu.org/licenses/gpl-2.0.html

//default values

// Diameter of the holder in mm
d_sphere=27;

// Diameter of the cylinder cut out in mm
d_hole=9;

// Height of the hole above the base in mm
h_hole=5;

// Diameter of the magnet in mm
d_magnet=14;

// Height of the magnet in mm
h_magnet=4;

difference() {
    // create the body
    sphere(d_sphere/2, center=true);

    // delete one hemisphere
    translate([0,0,-d_sphere/2])cube(d_sphere,d_sphere,d_sphere/2,center=true);

    // remove the cutout
    translate([0,d_sphere/2,d_hole/2+h_hole]) rotate([90,0,0]) cylinder(h=d_sphere,r=d_hole/2);

    // make recess for magnet
    cylinder(h=h_magnet, r=d_magnet/2);
    }
```


[User]
I need a set of OpenSCAD files for creating parametric tool drawer inserts, or small parts trays.

The basic shape is a rectangular box. I need to be able to control the *outer* height, width, and length of the box, as well as the wall thickness.

I also want an option for an angled or curved inner edge, a ramp, on the top of the inside of the box. I'd like to be able to choose between no ramps at all (for maximum internal space), a ramp on just the front wall, or ramps on all four walls. These ramps should be a smoothly curved arc, probably generated from a series of line segments approximating an arc. The "radius" of this arc should depend on the length of the side on which the ramp is built, which will have to be calculated. If the height is larger than the length of the side, the arc's radius should be that length; otherwise the arc's radius should be the same as the box's height.

Could you also ensure that the base of the insert is a separate part from the main insert? This would be useful if I wanted to experiment with a base that had holes or was thicker or something. So the base should just be a flat rectangle with a certain thickness.

I would be grateful if you could provide me with all necessary .scad files. I don't want to have to install any external libraries such as MCAD, BOSL, BOSL2, dotSCAD, NopSCADlib, or BOLTS to use it; everything should be self-contained in the generated code.

[Assistant]
tool_drawer_insert.scad:
```
//This is tool drawer insert
//It is a rectangular box with an optional sloping inner edge on the front or all-round.
outer_height = 25;
outer_width = 35;
outer_length = 130;
wall_thickness = 1;
inner_ramps = "none"; //[none:no ramps,front:front ramp only,all:ramps on all sides]

drawer_insert();

module drawer_insert()
{
    //Print the base
    linear_extrude(height=wall_thickness)
        square([outer_width, outer_length], center=true);
    //create the wall outer
    linear_extrude(height=outer_height)
        polygon(
            points=[
                [-1*outer_width/2, -1*outer_length/2],
                [-1*outer_width/2, +1*outer_length/2],
                [+1*outer_width/2, +1*outer_length/2],
                [+1*outer_width/2, -1*outer_length/2],
                [-1*(outer_width/2-wall_thickness), -1*(outer_length/2-wall_thickness)],
                [-1*(outer_width/2-wall_thickness), +1*(outer_length/2-wall_thickness)],
                [+1*(outer_width/2-wall_thickness), +1*(outer_length/2-wall_thickness)],
                [+1*(outer_width/2-wall_thickness), -1*(outer_length/2-wall_thickness)],
            ],
            paths=[
                [0,1,2,3],
                [4,5,6,7]
            ]
        );
    //Make the inside curve arc
    unit_arc=[
        [1,1],
        [cos(0),sin(0)],
        [cos(5),sin(5)],
        [cos(10),sin(10)],
        [cos(15),sin(15)],
        [cos(20),sin(20)],
        [cos(25),sin(25)],
        [cos(30),sin(30)],
        [cos(35),sin(35)],
        [cos(40),sin(40)],
        [cos(45),sin(45)],
        [cos(50),sin(50)],
        [cos(55),sin(55)],
        [cos(60),sin(60)],
        [cos(65),sin(65)],
        [cos(70),sin(70)],
        [cos(75),sin(75)],
        [cos(80),sin(80)],
        [cos(85),sin(85)],
        [cos(90),sin(90)],
    ];
    if ((inner_ramps == "front")||(inner_ramps=="all"))
    {
        //Scale for the front
        arc_radius = outer_height;
        if (outer_length < outer_height)
        {
            arc_radius = outer_length;
        }
        scaled_arc = unit_arc * arc_radius;
        //
        translate([0,-1* (outer_length/2 - arc_radius-wall_thickness),outer_height])
        rotate([-90,90,90])
        linear_extrude(height=outer_width, center=true)
            polygon(scaled_arc);
    }
    if (inner_ramps=="all")
    {
        //Scale for the rear
        arc_radius = outer_height;
        if (outer_length < outer_height)
        {
            arc_radius = outer_length;
        }
        scaled_arc = unit_arc * arc_radius;
        //
        translate([0,+1* (outer_length/2 - arc_radius-wall_thickness),outer_height])
        rotate([+90,90,90])
        linear_extrude(height=outer_width, center=true)
            polygon(scaled_arc);
        //Scale for the left
        arc_radius = outer_height;
        if (outer_width < outer_height)
        {
            arc_radius = outer_width;
        }
        scaled_arc = unit_arc * arc_radius;
        //
        translate([+1* (outer_width/2 - arc_radius-wall_thickness),0,outer_height])
        rotate([+90,90,0])
        linear_extrude(height=outer_length, center=true)
            polygon(scaled_arc);
       //Scale for the right
        arc_radius = outer_height;
        if (outer_width < outer_height)
        {
            arc_radius = outer_width;
        }
        scaled_arc = unit_arc * arc_radius;
        //
        translate([-1* (outer_width/2 - arc_radius-wall_thickness),0,outer_height])
        rotate([+90,90,180])
        linear_extrude(height=outer_length, center=true)
            polygon(scaled_arc);
    }

}

```


[User]
Hi, I'm looking to design a vacuum cannon, similar to the one described in the video [https://vimeo.com/135655056](https://vimeo.com/135655056). I'd like to be able to print this on a standard FDM printer.

I'd like to have a parametric OpenSCAD design where I can control several aspects of the cannon. I envision the main body to be composed of a tube with a cross shaped support structure at one end, with an optional business end piece that can be toggled on or off via a boolean variable. I'd like to be able to specify the outer and inner diameter of the main tube, the width and length of the cross support, and the length of the tube. I'd also like to specify the diameter of the inlet tube that connects perpendicularly to the main tube. This inlet should connect at a 45 degree angle to the main tube and also have support structure on the main body of the print. The support for the inlet should extend along the outside of the tube, from the inlet location. Finally, I'd also like to be able to control the wall thickness of the cannon and its supports.

Specifically, I would like to be able to control the following parameters:

*   `OuterDiameter`: The outer diameter of the main tube.
*   `InnerDiameter`: The inner diameter of the main tube.
*   `PlateWidth`: The width of the cross support.
*   `PlateLength`: The length of the cross support.
*   `TubeLength`: The length of the main tube.
*   `InletDiameter`: The outer diameter of the inlet tube.
*  `InletInnerDiameter`: The inner diameter of the inlet tube
*   `BusinessEnd`: A boolean to toggle the business end piece.
*   `WallThickness`: The wall thickness for all solid objects, including the main tube, the inlet support structure and the support cross.
*   `MainTubeSupportThickness` The wall thickness of the main tube support cross
*   `InletSupportThickness` The thickness of the support structure around the inlet.

I'd like the design to use the `difference()` operation to create the hollow tube and inlet, as well as a simple support for the inlet.

I do not require use of any specific libraries for this design. Could you please generate the OpenSCAD file(s) for this?

[Assistant]
VacuumCannon.scad:
```
$fn=100*1;

//All sizes are in mm
BusinessEnd   = "false";//[true,false]
OuterDiameter = 50;
InnerDiameter = 40;
PlateWidth    = 50;
PlateLength   = 80;
TubeLength    = 55;

odr = OuterDiameter/2;
idr = InnerDiameter/2;

maintube = (OuterDiameter+10)/2;

difference(){
    pos();
    neg();
}

module pos(){

    if(BusinessEnd=="true"){
        cylinder(r=maintube,h=15);
    }else{
        cylinder(r=maintube,h=25);
    }

    //Inlet
    if(BusinessEnd=="false"){
        rotate([90,0,45]){
            translate([0,11,odr]){
               cylinder(r=4,h=TubeLength-odr); //OD=8
            }
        }
        //inlet support
        rotate([0,0,45+180]){
            translate([-0.5,odr,0]){
                cube([1,TubeLength-odr,7]);
            }
            translate([-3,TubeLength-1,0]){
                cube([6,1,8.5]);
            }
        }
    }

    //cross
    translate([-PlateLength/2,-PlateWidth/2,0]){
        cube([PlateLength,PlateWidth,4]);
    }
    translate([-PlateWidth/2,-PlateLength/2,0]){
        cube([PlateWidth,PlateLength,4]);
    }

}

module neg(){
    translate([0,0,-1]){
        cylinder(r=idr,h=42);
        }
    if(BusinessEnd=="true"){
        translate([0,0,5]){
            cylinder(r=odr,h=11);
        }
    }else{
        translate([0,0,15]){
            cylinder(r=odr,h=11);
        }
    }

    if(BusinessEnd=="false"){
        rotate([90,0,45]){
            translate([0,11,0]){
                translate([0,0,-0.5]){ cylinder(r=2.5,h=TubeLength+1); } //ID=5
            }
        }
    }
    translate([0,0,-0.1]){
        cylinder(r1=idr+1,r2=idr,h=1);
    }
}

```


[User]
Hey, I'm looking to create a parametric design for an earring holder, and I'd really appreciate your help with the OpenSCAD code.

Basically, I want a small, individual holder that can hold two earrings, one on each side, like a figure 8. The basic shape of one side is a circle that's been extruded to be a short cylinder. Then, there's a smaller circle in the center, also extruded, that goes almost all the way through, creating a little post. Each holder will then have *two* of these, mirrored, one on each side, forming the figure 8 shape.

I want to be able to control:

*   **Circle diameters:** The diameter of the main, larger cylinder and the smaller, inner post cylinder.
*   **Cylinder heights:** The height of the larger cylinder, and the height/depth of the smaller, post cylinder.
*   **Spacing:** The distance between the two sets of cylinders on each holder.
*   **Grid layout:** I want the ability to easily create grids of these holders, and should be able to control both the number of rows and columns, as well as the spacing between each holder in the grid, both horizontally and vertically.

For example, the code I gave you produces a 5x9 grid of earring holders. Each holder has a larger cylinder of 10mm diameter that's 2mm tall, and a 3mm diameter cylinder as the post that's 4mm tall, leaving a 1mm gap. They are also spaced 10mm apart from their center point.

I'm hoping for the design to be entirely parametric, so I can easily modify dimensions and grid layout. I'd like to avoid any unnecessary complexity and keep the design as clean as possible. I am not looking for any special shape on the holder - its just to have simple circles extruded.

I'd prefer to avoid any external libraries if possible for simplicity, but will not rule them out if required. Thanks in advance!

[Assistant]
Infinity.scad:
```
// the higher the number, the better the circle
object_quality = 60;

rows = 5;
columns = 9;

module earing_holder () {
    difference() {
        translate ([4,0,0])
            scale ([1,1,1])
            linear_extrude(height=2)
            circle (d=10);
        translate ([5,0,-1])
            linear_extrude(height=4)
            circle (d=3);
    };
    difference() {
        translate ([-4,0,0])
            scale ([1,1,1])
            linear_extrude(height=2)
            circle (d=10);
        translate ([-5,0,-1])
            linear_extrude(height=4)
            circle (d=3);
    };
}

$fn = object_quality;

for (j=[0:columns-1]) {
    for (i=[0:rows-1]) {
        translate ([(18+2)*i,(9+2)*j,0])
        earing_holder();
    }
}
```


[User]
Hi! I'm trying to design a replacement part for a common problem with Ford Focus door lock mechanisms. The plastic hook that holds the driver's side door lock in place often breaks. I've seen a few designs online, but I need something parametric so I can tweak it for different years/models if necessary.

Essentially, it's a hook shape, a bit like a flattened "L" with an extra supporting piece.  The base of the "L" is a rectangular prism, and it sits horizontally.  Attached to the bottom of that, also horizontal, is a wider, thinner rectangular base.  Rising vertically from the top of the first rectangular prism is a shorter, thinner rectangular prism, basically the hook itself. There's also a angled chamfer on the top back corner of the hook, which looks like a truncated triangular prism, kind of smoothed off.

I'd like the design to be parameterized so I can easily adjust the following:

*   `hook_level`: The height of the chamfer, it's also related to how much of that corner is 'cut' off. This should be in the range 1-6, with a default of 3.
*   `plane_hight`: The thickness of the wide base, default 0.8.
*   `hook_width_x`: The length of the hook (front to back), default 7.
*  `hook_width_y`: The thickness of the hook arm, default 2.

I need a final design which is rotated 90 degrees on the Y axis.

Can you generate OpenSCAD code for this, please? I would prefer that no library is used, just the standard OpenSCAD built-in functions and modules. Thanks!

[Assistant]
focus-fix2.scad:
```
hook_level=3;//[1:6]
plane_hight=0.8;
hook_width_x=7;
hook_width_y=2;
hOsn=plane_hight*1;
dL=hook_width_y*1;
rotate([0,90,0])
difference(){
union(){
translate([0,4.5/2-dL/2,8+hOsn-dL/2])
cube([hook_width_x,4.5,dL], center=true);
translate([0,0,4+hOsn])
cube([hook_width_x,dL,8], center=true);
translate([0,0,hOsn/2])
cube([hook_width_x,11*1.5,hOsn], center=true);
}
//уголок немного спиливаем
translate([0,dL/2+((4.5-dL)/1.5)/2,8+hOsn-dL])
scale([1,1,hook_level/10])
rotate([90,0,90])
cylinder(r=(4.5-dL)/1.5,h=hook_width_x+0.2,$fn=3, center=true);
}

```


[User]
I need a parametric wedge design for OpenSCAD. I've seen some similar designs, but I want one that's really customizable and easy to adjust for different slopes and sizes.

Here's what I'm thinking:

*   **Slope:** I need to be able to define the slope of the wedge using a "Slope Length" and a "Gap Height". The "Slope Length" would be the horizontal distance over which the wedge rises, and the "Gap Height" would be the total vertical height of the wedge at its thickest point.

*   **Wedge Size:** I want to control the width of the wedge ("Wedge X" – along the gap or top surface of the wedge) and the length of the wedge ("Wedge Y" – along the slope).

*   **Edges:** I would like an option to add raised edges around the wedge to prevent it from slipping or rolling off. There should be parameters for "Edge Width" (how wide the lip is all around) and "Edge Height" (how much the lip extends upwards from the main wedge body).

Basically, I want to be able to specify the overall dimensions of the wedge, its slope, and the size of the anti-roll edge if I need one. I think I'd like to keep it all in a single .scad file. Could you generate that for me?

[Assistant]
Wedge.MB.v5c.scad:
```
/** Create Wedge **/
/*
Universal Adjustabel Wedge by Chris Schaefer is licensed under the Creative Commons - Attribution - Non-Commercial license.
*/

// MB Interface

/* [Slope] */
// from leg to leg
Slope_Length=120;
// how high is the gap? equals the wedge hight
Gap_Height=10;

/* [Wedge Size] */
// how wide is the wedge? along the gap
Wedge_X=30;
// length of the wedge, along the slope
Wedge_Y=40;

// Should the wedge have edges to prevent rolling off?
/* [Edge] */
// the width will be added around the wedge
Edge_Width=3.0;
// the hight will be added to the gap size.
Edge_Height=2.0;

// Interface End
/* [Hidden] */
// Length
LEN=Slope_Length;
// Gap
GAP=Gap_Height;

// Block size
/* [Block Size] */
// width (width at the max hight)
X=Wedge_X;
// length (length along the slope)
Y=Wedge_Y;

// edge around the block to stop rolling off
EDGE=Edge_Width;    // edge border thickness
EDGE_H=Edge_Height;  // hight of the edge

// ========================================================
// Block is:
module block () {
    // Block size
    cube(size = [ X, Y, GAP ], center = false);
    // Edge added
    translate([-EDGE, -EDGE, 0])
        difference ()
          {
            cube(size = [ X+2*EDGE, Y+2*EDGE, GAP+EDGE_H ], center = false);
            translate ([EDGE, EDGE,0])
              cube(size = [ X, Y, GAP+EDGE_H ], center = false);
          }
      }

module wedge () {
    // Wedge with the right slop
        // shift and rotate it into place
            translate ( [-EDGE,-0,GAP] )
            rotate ([0,90,0])
        // wedge
        linear_extrude(height = X+2*EDGE)
         polygon( points=[[-EDGE_H,-EDGE],[-EDGE_H,LEN],[GAP,-EDGE]]  );

 }

// limit the block to the wedge, gives it the right slope.
intersection ()
 {
      block ();
      wedge ();
  }

```


[User]
Hey, I'm looking to create a set of customizable sandcastle molds using OpenSCAD, and I have a pretty clear idea of what I want. I'm imagining something that combines classic castle elements with fractal patterns generated from Julia sets. I've seen similar projects, but want something highly parameterized so it can be used to 3D print molds of varying sizes, heights, etc.

The main components I need are:

**1. Castle Body:**
*   A central body that's essentially a truncated square pyramid.
    *   I need to be able to control the height of the pyramid (`castle_height`).
    *   The base should be a square of configurable size (`bed_xy`).
    *   I want to be able to scale the top square of the pyramid relative to the bottom one (`top_square_scale`), to make it a full pyramid or a more gradual incline.
    *   I'll need to specify the number of linear extrusion slices (`extrusion_slices`).
*   The base dimensions are going to be tied to the printing bed, so I need a minimum `bed_xy` dimension.

**2. Towers:**
*   Four cylindrical towers, one at each corner of the base.
    *   Each tower will have a base cylinder of a specified radius (`outer_tower_rad`).
    *   A necked section that tapers in towards the cylinder.
    *   An overhang, that comes outward from the cylinder.
    *   A battlement section at the top.
    *   The height of each tower should be adjustable (`tower_height`).
    *   The proportion of the tower dedicated to battlements should be configurable (`battlement_proportion`).
    *   The thickness of the battlements should be set by a parameter (`battlement_thickness`).
    *   There should be variable cutaways between the battlements to make the crenellations, controlled with the `battlement_cutaway_val` parameter.
    *   The overhang angle should be controllable with a parameter `overhang_angle`, even though for sand mold purposes it will need to be kept as near-vertical as possible.

**3. Fractals:**
*   I want to integrate Julia set fractals into the walls of the castle, one on each face of the base pyramid.
    *   I need control over the depth/thickness of the fractal pattern (`fractal_height`).
    *   Each fractal should be scalable in the x and y dimensions (`fractal_scale_x`, `fractal_scale_y`).
    *   The Julia set fractals will be generated through a pixel-based method.
        *   There must be some method of representing/approximating the complex number in code, to use in the Julia set iteration.
    *   There should be a modulus threshold (`modulus_threshold`) to control whether points belong to the fractal or not.
    *   Each fractal needs its own set of parameters to control:
        *   The real component of the constant used in the Julia set iteration (`realC1`, `realC2`, `realC3`, `realC4`).
        *   The imaginary component of the constant used in the Julia set iteration (`imagC1`, `imagC2`, `imagC3`, `imagC4`).
        *   The resolution (pixel density) of the fractal (`resolution1`, `resolution2`, `resolution3`, `resolution4`).
        *   The number of iterations to perform in the Julia set generation (`iterations1`, `iterations2`, `iterations3`, `iterations4`).
        *   The bound on the size of the space which the points are drawn from (`bound1`, `bound2`, `bound3`, `bound4`).

**4. Text:**
*   I want to include text labels on each face of the pyramid.
    *   The text's width, height, and depth should be adjustable (`text_x`, `text_y`, `text_z`).
    *   There should be four different text fields, one for each side (`text1`, `text2`, `text3`, `text4`).
    *    The text should use a specified font, something like "Liberation Sans:style = bold".

**5. Capstone:**
*   I'd like a separate generator for 3D fractal capstones, also from Julia set iterations.
    *   The height of the capstone should be controllable (`capstone_height`).
    *    Scalable in the x and y dimensions using `capstone_scale_x`, and `capstone_scale_y`.
    *   The fractal is generated using a sequence of Julia set iterations for each level, using a slice parameter `slices`.
    *   The Julia set parameters should be controlled using:
        *   The real component of the constant for the Julia set (`realCC`).
        *   The imaginary component of the constant for the Julia set (`imagCC`).
        *   The resolution (`resolutionC`).
        *   The bound on the size of the space which the points are drawn from (`boundC`).

**Mould Generation:**
*   I need the option to generate negative space moulds for both the overall castle body, each fractal pattern, and each text label, so that the printed product forms a mold for sand.
    *   These are generated by offsetting/minkowski-ing the positive object by a set amount (`mould_width`).
    *  I need to be able to select which fractal the mold should be generated for, via the `Generate_mould_for_fractal_number` parameter.
    *  I also need to be able to select which text object a mould should be generated for, via the `Generate_mould_for_text_number` parameter.

**General:**
*   I need to ensure the design is parametric such that the generated shapes will always separate vertically to allow for use as a mold in sand.
*   I think it would be good to have a global fragment size (`$fs`) setting for resolution.
*   A menu should be set up so that a user can select whether they want to Preview a sample castle, Generate a castle body mould, Generate a fractal mould, Generate a text mould, Preview a capstone, or Generate a capstone mould. I'd like a variable to control that called `I_Want_To`.
*   There should be an echo statement of the angle of the pyramid's sides.
*   I'd like to keep this as a series of .scad files without importing any libraries except for the default "MCAD" library, for any common functions that may exist.

This is a pretty involved request, but I'm excited to see what you can do! Let me know if you have any questions.

[Assistant]
Fract-A-Castle.scad:
```
/*[Global]*/

I_Want_To = "Preview a sample castle"; //[Preview a sample castle, Generate a castle body mould, Generate a fractal mould, Generate a text mould, Preview a capstone, Generate a capstone mould]

//Minimum fragment size. Decrease for greater curve resolution
$fs = 0.2;

/*[Mould settings]*/

//Minimum width of the mould walls
mould_width = 0.2;

//Choose which fractal a mould will be generated for
Generate_mould_for_fractal_number = 2; //[2, 3, 4]

//Choose which text object a mould will be generated for
Generate_mould_for_text_number = 1; //[2, 3, 4]

/*[Castle Body]*/

//in cm. Ensure castle_height + mould_width < bedz
castle_height = 8;

//Minimum length of the print bed in x and y dimensions, in centimetres.
bed_xy = 15;

//Number of slices in the linear body extrusion
extrusion_slices = 50;

//Dimensions of the top square as a proportion of those of the bottom square. Set to 0 to render square-based pyramids
top_square_scale = 0.3;

/*[Towers]*/

outer_tower_rad = 1.6;

tower_height = 10;

//Proportion of tower occupied by battlements
battlement_proportion = 0.10;

//Thickness of battlements
battlement_thickness = 0.4;

//Increase for larger gaps between battlements
battlement_cutaway_val = 0.3;

/*[Fractals]*/

//Depth of the fractal patterns
fractal_height = 1.5;

 //Increase for greater fractal width
fractal_scale_x = 2.2;

 //Increase for greater height
fractal_scale_y = 2.2;

//Complex numbers under the Julia set iteration which have a modulus greater than this after a specified number of iterations will not be included in the final pattern
modulus_threshold = 2;

/*[Text size]*/

//Width - Warning: below 0.2 one may experience trouble printing the moulds
text_x = 0.2;

//Height - Warning: below 0.2 one may experience trouble printing the moulds
text_y = 0.2;

//Depth
text_z = 0.6;

/*[Capstone settings]*/

capstone_height = 5;

capstone_scale_x = 2;

capstone_scale_y = 2;

//final number of iterations in the last level of the capstone
slices = 30;

//Real component of constant number C used for the Julia set iteration
realCC = -0.624;

//Corresponding imaginary component
imagCC = 0.435;

//Increase for less pixelation. Higher resolutions will also better converge upon mould_width
resolutionC = 10;

//Points are taken from a bound x bound square about the origin
boundC = 1;

/*[Side 1]*/

text1 = "Math\u2665";

//Real component of constant number C used for the Julia set iteration
realC1 = 0.35;

//Corresponding imaginary component
imagC1 = 0.2;

//Increase for less pixelation
resolution1 = 60;

//Number of iterations to perform. How "sharply defined" the fractal is
iterations1 = 15;

//Points are taken from a bound x bound square about the origin
bound1 = 1;

/*[Side 2]*/

text2 = "My";

//Real component of constant number C used for the Julia set iteration
realC2 = -0.3;

//Corresponding imaginary component
imagC2 = 0.6;

//Increase for less pixelation
resolution2 = 15;

//Number of iterations to perform. How "sharply defined" the fractal is
iterations2 = 60;

//Points are taken from a bound x bound square about the origin
bound2 = 1;

/*[Side 3]*/

text3 = "Castle";

//Real component of constant number C used for the Julia set iteration
realC3 = -1.1;

//Corresponding imaginary component
imagC3 = 0;

//Increase for less pixelation
resolution3 = 15;

//Number of iterations to perform. How "sharply defined" the fractal is
iterations3 = 20;

//Points are taken from a bound x bound square about the origin
bound3 = 1;

/*[Side 4]*/

text4 = "here!";

//Real component of constant number C used for the Julia set iteration
realC4 = -0.5;

//Corresponding imaginary component
imagC4 = 0.6;

//Increase for less pixelation
resolution4 = 15;

//Number of iterations to perform. How "sharply defined" the fractal is
iterations4 = 60;

//Points are taken from a bound x bound square about the origin
bound4 = 1;

/*[Hidden]*/

overhang_angle = 0;
cornerDist = (bed_xy/2) - mould_width;
//Proportion of tower that is the overhang section
overhang_proportion = 0.05;
offset_angle = 90 - overhang_angle;
neck_radius = outer_tower_rad - ((overhang_proportion*tower_height)/(tan(offset_angle)));
towerTrans = cornerDist - neck_radius;
pyramid_angle = atan2(castle_height, cornerDist - 0.5*(bed_xy*top_square_scale));

echo(pyramid_angle);

if (I_Want_To == "Preview a sample castle") {

        difference() {

            union() {

                pyramid(castle_height, bed_xy, extrusion_slices,  cornerDist);

                translate([towerTrans, towerTrans, 0]) {
                    tower(offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness);
                }

                translate([towerTrans, -towerTrans, 0]) {
                    tower(offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness);
                }

                translate([-towerTrans, -towerTrans, 0]) {
                    tower(offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness);
                }

                translate([-towerTrans, towerTrans, 0]) {
                    tower(offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness);
                }

              translate([cornerDist,0,(10*text_y*cos(pyramid_angle))]) {
                    rotate([0,0,90]) {
                        rotate([pyramid_angle,0,0]) {
                           scale([text_x, text_y, 1]) {
                               linear_extrude(height = text_z, slices = extrusion_slices) {
                                        text(text1, font = "Liberation Sans:style = bold", spacing = 0.9, halign = "center");
                               }
                            }
                        }
                    }
                }

                translate([(cornerDist/2),0, (cornerDist/2 + fractal_height)]) {
                    rotate([0,pyramid_angle,0]) {
                        scale([fractal_scale_x, fractal_scale_y, 1]) {
                            fractal(realC1, imagC1, iterations1, bound1, resolution1,fractal_height);
                        }
                    }
                }

                translate([0,cornerDist,,(10*text_y*cos(pyramid_angle))]) {
                        rotate([-pyramid_angle,0,0,]) {
                           scale([text_x, text_y, 1]) {
                               rotate([0,0,180]) {
                                    linear_extrude(height = text_z, slices = extrusion_slices) {
                                        text(text2, font = "Liberation Sans:style = bold", spacing = 0.9, halign = "center");
                                    }
                               }
                            }
                        }
                }

                translate([0,(cornerDist/2),(cornerDist/2 + fractal_height)]) {
                    rotate([-pyramid_angle,0,0]) {
                        scale([fractal_scale_x, fractal_scale_y, 1]) {
                            fractal(realC2, imagC2, iterations2, bound2, resolution2, fractal_height);
                        }
                    }
                }

                  translate([-cornerDist,0,(10*text_y*cos(pyramid_angle))]) {
                    rotate([0,0,90]) {
                        rotate([-pyramid_angle,0,0,]) {
                           scale([text_x, text_y, 1]) {
                               rotate([0,0,180]) {
                                    linear_extrude(height = text_z, slices = extrusion_slices) {
                                        text(text3, font = "Liberation Sans:style = bold", spacing = 0.9, halign = "center");
                                    }
                               }
                            }
                        }
                    }
                }

                translate([-(cornerDist/2),0,(cornerDist/2 + fractal_height)]) {
                    rotate([0,-pyramid_angle,0]) {
                        scale([fractal_scale_x, fractal_scale_y, 1]) {
                            fractal(realC3, imagC3, iterations3, bound3, resolution3, fractal_height);
                        }
                    }
                }

                translate([0,-cornerDist,,(10*text_y*cos(pyramid_angle))]) {
                        rotate([pyramid_angle,0,0,]) {
                           scale([text_x, text_y, 1]) {
                                    linear_extrude(height = text_z, slices = extrusion_slices) {
                                        text(text4, font = "Liberation Sans:style = bold", spacing = 0.9, halign = "center");
                                    }
                               }
                        }
                }

                translate([0,-(cornerDist/2),(cornerDist/2 + fractal_height)]) {
                    rotate([pyramid_angle,0,0]) {
                        scale([fractal_scale_x, fractal_scale_y, 1]) {
                            fractal(realC4, imagC4, iterations4, bound4, resolution4, fractal_height);
                        }
                    }
                }
            }

        }
    }

 if (I_Want_To == "Generate a castle body mould") {

       difference() {

           minkowski() {

            castle(castle_height, bed_xy, extrusion_slices, cornerDist,  towerTrans, offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness);

            sphere(r = mould_width);

           }

           castle(castle_height, bed_xy, extrusion_slices, cornerDist,  towerTrans, offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness);

           translate([0, 0, -25]) {

            cube(size = [50,50,50], center = true);

           }

          cube(size = [bed_xy*top_square_scale, bed_xy*top_square_scale, 100], center = true);

       }

 }

if (I_Want_To == "Generate a fractal mould") {

    difference() {
        rotate([180,0,0]) {
            difference() {
                union() {
                    minkowski() {
                        if (Generate_mould_for_fractal_number == 1) {
                                fractal1(realC1, imagC1, iterations1, bound1, resolution1, fractal_scale_x, fractal_scale_y);
                            }

                            if (Generate_mould_for_fractal_number == 2) {
                                fractal2(realC2, imagC2, iterations2, bound2, resolution2, fractal_scale_x, fractal_scale_y);
                            }

                            if (Generate_mould_for_fractal_number == 3) {
                                fractal3(realC3, imagC3, iterations3, bound3, resolution3, fractal_scale_x, fractal_scale_y);
                            }

                            if (Generate_mould_for_fractal_number == 4) {
                                fractal4(realC4, imagC4, iterations4, bound4, resolution4, fractal_scale_x, fractal_scale_y);
                            }
                            sphere(r = mould_width);
                       }
                 }

                 translate([0, 0, -25]) {
                     cube(size = [50, 50, 50], center = true);

                 }

                     if (Generate_mould_for_fractal_number == 1) {
                                fractal1(realC1, imagC1, iterations1, bound1, resolution1, fractal_scale_x, fractal_scale_y);
                            }

                            if (Generate_mould_for_fractal_number == 2) {
                                fractal2(realC2, imagC2, iterations2, bound2, resolution2, fractal_scale_x, fractal_scale_y);
                            }

                            if (Generate_mould_for_fractal_number == 3) {
                                fractal3(realC3, imagC3, iterations3, bound3, resolution3, fractal_scale_x, fractal_scale_y);
                            }

                            if (Generate_mould_for_fractal_number == 4) {
                                fractal4(realC4, imagC4, iterations4, bound4, resolution4, fractal_scale_x, fractal_scale_y);
                            }

             }
         }

         translate([-50, -50, -fractal_height -0.99]) {
            cube([100, 100, 1]);
         }
     }
}

if (I_Want_To == "Generate a text mould") {

    difference() {

         linear_extrude(height = text_z, twist = 0, slices = 50) {
                        offset(r = mould_width) {

                            if (Generate_mould_for_text_number == 1) {
                                 scale([text_x, text_y, text_z]) {
                                       text(text1, font = "Liberation Sans:style = bold", spacing = 0.9, halign = "center");
                                 }
                            }
                            if (Generate_mould_for_text_number == 2) {
                                scale([text_x, text_y, text_z]) {
                                       text(text2, font = "Liberation Sans:style = bold", spacing = 0.9, halign = "center");
                                }
                            }
                            if (Generate_mould_for_text_number == 3) {
                                scale([text_x, text_y, text_z]) {
                                      text(text3, font = "Liberation Sans:style = bold", spacing = 0.9, halign = "center");
                                }
                           }
                           if (Generate_mould_for_text_number == 4) {
                               scale([text_x, text_y, text_z]) {
                                      text(text4, font = "Liberation Sans:style = bold", spacing = 0.9, halign = "center");
                               }
                           }
                        }
          }

           linear_extrude(height = text_z + 0.01, twist = 0, slices = 50) {

                            if (Generate_mould_for_text_number == 1) {
                                 scale([text_x, text_y, text_z]) {
                                       text(text1, font = "Liberation Sans:style = bold", spacing = 0.9, halign = "center");
                                 }
                            }
                            if (Generate_mould_for_text_number == 2) {
                                scale([text_x, text_y, text_z]) {
                                       text(text2, font = "Liberation Sans:style = bold", spacing = 0.9, halign = "center");
                                }
                            }
                            if (Generate_mould_for_text_number == 3) {
                                scale([text_x, text_y, text_z]) {
                                      text(text3, font = "Liberation Sans:style = bold", spacing = 0.9, halign = "center");
                                }
                           }
                           if (Generate_mould_for_text_number == 4) {
                               scale([text_x, text_y, text_z]) {
                                      text(text4, font = "Liberation Sans:style = bold", spacing = 0.9, halign = "center");
                               }
                           }
          }
      }

}

if (I_Want_To == "Generate a capstone mould") {

    pixel = ((2*boundC)/resolutionC);
    individual_height = capstone_height/slices;

    rotate([0, 180, 0]) {
        difference() {

             translate([0, 0, 0.5*(capstone_height)]) {
                cube(size = [capstone_scale_x*2*(boundC + pixel) + 2*mould_width, capstone_scale_y*2*(boundC + pixel) + (2*mould_width), capstone_height], center = true);
             }

                    scale([capstone_scale_x, capstone_scale_y, 1.05]) {

                        translate([-pixel, -pixel, -individual_height]) {
                            for (i = [1:slices]) {
                                translate([0, 0, (0.99*i*individual_height)]) {
                                    fractal(realCC, imagCC, i, boundC, resolutionC, individual_height);
                                }
                            }
                        }
                    }
                }
            }
}

if (I_Want_To == "Preview a capstone") {

    pixel = ((2*boundC)/resolutionC);
    individual_height = capstone_height/slices;

     scale([capstone_scale_x, capstone_scale_y, 1]) {
        translate([-pixel, -pixel, -individual_height]) {
              for (i = [1:slices]) {
                  translate([0, 0, (0.99*i*individual_height)]) {
                      fractal(realCC, imagCC, i, boundC, resolutionC, individual_height);
                  }
              }
          }
      }

}

module fractal(realC, imagC, iterations, bound, resolution, fractal_height) {

    increment = ((2*bound)/resolution);

    function iterateR(real, imag, realC) = (real * real) - (imag * imag) + realC;

    function iterateC(real, imag, imagC) = (2*imag*real) + imagC;

    function performR(real, imag, iteration) = (iteration == iterations || modulus(real, imag) > modulus_threshold) ? real : performR(iterateR(real, imag, realC), iterateC(real, imag, imagC), (iteration + 1));

    function performC(real, imag, iteration) = (iteration == iterations || modulus(real, imag) > modulus_threshold) ? imag : performC(iterateR(real, imag, realC), iterateC(real, imag, imagC), (iteration + 1));

    function modulus(real, imag) = pow((real*real + imag*imag), 0.5);

    union() {

        for (i = [-bound : increment : (bound + increment)] ) {
            for (j = [-bound : increment : (bound + increment)] ) {

                x = performR(i, j, 1);

                y = performC(i, j, 1);

                if (modulus(x,y) < 2) {

                    translate([i,j,0]) {

                        cube(size = [increment, increment, fractal_height], centre = true);
                    }
                }
            }
        }
    }
}

module tower(offset_angle, outer_rad, height, overhang_proportion, battlement_proportion, battlement_thickness) {

  neck_height = (1 - overhang_proportion - battlement_proportion)*height;
  overhang_height = overhang_proportion*height;
  battlement_height = ((battlement_proportion*height));
  neck_radius = outer_rad - ((overhang_proportion*height)/(tan(offset_angle)));

  cylinder(h = neck_height, r = neck_radius, centre = true);

  translate([0,0,neck_height]) {
      cylinder(h = (overhang_height), r1 = neck_radius, r2 = outer_rad, center = false);
        translate([0,0,overhang_height]) {
            difference() {
                cylinder(h = battlement_proportion*height, r = outer_rad, centre = false);

                cylinder(h = battlement_height + 0.01, r = outer_rad - battlement_thickness, centre = false);

                    translate([0, 0, battlement_height/2]) {
                        rotate([0,0,30]) {
                            cube([2*outer_rad, battlement_cutaway_val*outer_rad, battlement_height+ 0.01], center = true);
                        }

                        rotate([0, 0, 150]) {
                            cube([2*outer_rad, battlement_cutaway_val*outer_rad, battlement_height+0.01], center = true);
                        }

                        rotate([0, 0, 270]) {
                            cube([2*outer_rad, battlement_cutaway_val*outer_rad, battlement_height+0.01], center = true);
                        }

                }
            }
        }
    }
}

module body(offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness) {

            difference() {

            tower(offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness);

            translate([0, 0, tower_height - (0.5*(battlement_proportion)*tower_height)]) {

                cube(size = [(2*outer_tower_rad), (2*outer_tower_rad), (battlement_proportion)*tower_height], center = true);
            }
        }

    }

module battlements(offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness) {

    difference() {

        tower(offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness);

        translate([0, 0, (0.5*(1-battlement_proportion)*tower_height)]) {
            cube(size = [(2*outer_tower_rad), (2*outer_tower_rad),(1-battlement_proportion)*tower_height], center = true);
        }

    }

}

module pyramid(castle_height, bed_xy, extrusion_slices, cornerDist ) {

        linear_extrude(height = castle_height, center = false, convexity = 10, twist = 0, slices = extrusion_slices, scale = top_square_scale) {
                        polygon(points = [[cornerDist, cornerDist], [cornerDist, -cornerDist], [- cornerDist, -cornerDist], [-cornerDist, cornerDist]], convexity = 10);
         }

}

module fractal1(realC1, imagC1, iterations1, bound1, resolution1, fractal_scale_x, fractal_scale_y) {

    scale([fractal_scale_x, fractal_scale_y, 1]) {
                            fractal(realC1, imagC1, iterations1, bound1, resolution1, fractal_height);
                        }

}

module fractal2(realC2, imagC2, iterations2, bound2, resolution2, fractal_scale_x, fractal_scale_y) {

    scale([fractal_scale_x, fractal_scale_y, 1]) {
                            fractal(realC2, imagC2, iterations2, bound2, resolution2, fractal_height);
                        }

}

module fractal3(realC3, imagC3, iterations3, bound3, resolution3, fractal_scale_x, fractal_scale_y) {

    scale([fractal_scale_x, fractal_scale_y, 1]) {
                            fractal(realC3, imagC3, iterations3, bound3, resolution3, fractal_height);
                        }

}

module fractal4(realC4, imagC4, iterations4, bound4, resolution4, fractal_scale_x, fractal_scale_y) {

    scale([fractal_scale_x, fractal_scale_y, 1]) {
                            fractal(realC4, imagC4, iterations4, bound4, resolution4, fractal_height);
                        }

}

module castle(castle_height, bed_xy, extrusion_slices, cornerDist,  towerTrans, offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness) {

  pyramid(castle_height, bed_xy, extrusion_slices,  cornerDist);

        translate([towerTrans, towerTrans, 0]) {
                    tower(offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness);
                }

                translate([towerTrans, -towerTrans, 0]) {
                    tower(offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness);
                }

                translate([-towerTrans, -towerTrans, 0]) {
                    tower(offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness);
                }

                translate([-towerTrans, towerTrans, 0]) {
                    tower(offset_angle, outer_tower_rad, tower_height, overhang_proportion, battlement_proportion, battlement_thickness);
                }
}

```


[User]
I need a parametric design for a 90-degree joint for open beams, similar to the one I've described but more flexible and robust.

Essentially, it should consist of two main parts: a beam endcap and a cross-beam connector. The endcap will fit over the end of one open beam and have a slot for the other beam to slide through. I need all the dimensions to be adjustable via variables, so I can easily adapt it to different beam sizes, wall thicknesses, slot depths, and corner radii.

Here are some specific requirements and clarifications:

*   **Open Beam Dimensions:** The primary beam is a square profile, and I want to be able to define its dimensions using `open_beam`. For my current setup, `open_beam` would be 15mm.
*   **Endcap:** This piece should sit at the end of a beam. It needs to have a slot that is sized to allow another identical open beam to pass through.
*   **Cross-Beam Slot:** The slot should be sized to fit the other beam *snugly*. The slot should also have adjustable depth `slot_depth` parameter; in my original file, I had it set to 15mm, but I want this to be easily modified.
*   **Extrusion:** The wall thickness (extrusion) should be variable, using the `extrusion` parameter. In my setup that was 0.3mm.
*   **Wall Thickness Modifier:** I need a `w_t_mod` parameter for the overall dimensions of the endcap. It was set at 0.5 in my design, and I would like to keep that as a modifier to `open_beam`.
*   **Corner Radius:** The endcap should have rounded corners. This should be variable with parameter `r_corners`. I was using 3mm, but I want to adjust it.
*   **Beam Width:** I also had a hard-coded `beam_width` at 15mm. This should just be equal to `open_beam`
*   **Cross-beam Length:** There is the parameter `cross_b_length`, which I want to be tied to `beam_width` and `w_t_mod` (in my file it was `beam_width+beam_width*w_t_mod`).
*   **Fillet Radius:** I had the parameter 'r' which was defined in the cylinder of my code (as `r=1.5+extrusion*2`). I would like to be able to adjust this parameter using `fillet_radius`.

Basically, I need the joint to be robust and well-defined, and everything should be configurable. Can you create the OpenSCAD code for this? Please use comments to describe the parameters. I am not using any custom libraries, so I don't expect you to attach any code related to them.

[Assistant]
right_angle_open_beam.scad:
```
open_beam = 15; //open beam dimensions (square)
r_corners = 3;
extrusion=0.3;

w_t_mod = 0.5;
beam_width = 15;
slot_depth = 15;
cross_b_length = beam_width+beam_width*w_t_mod ;
//variables for edge fillet
b = 13;
h = 20;
w = 90*0.5888888+r_corners;

//===========================================================================================
//===========================================================================================
module beam_cap(){
	difference(){
		difference(){
			translate([0, 0, beam_width/2])
			cube([beam_width+beam_width*w_t_mod, beam_width+beam_width*w_t_mod, slot_depth+beam_width*w_t_mod], center=true);
			translate([0, 0, (beam_width*w_t_mod+beam_width)/2])
			cube([beam_width+extrusion*2, beam_width+extrusion*2, slot_depth], center=true);

		}
			union(){
				translate([0, 0, -(slot_depth+beam_width*w_t_mod+beam_width)/4])
				rotate([90, 0, 0])
				cube([beam_width+extrusion*2, beam_width+extrusion*2, cross_b_length*2], center=true);
				translate([0, 0, -(slot_depth+beam_width*w_t_mod+beam_width)/4])
				rotate([0, 90, 0])
				cylinder(r=1.5+extrusion*2, h=cross_b_length*2,center = true,  $fn=15);
				translate([0, 0, (slot_depth+beam_width*w_t_mod+beam_width)/4])
				rotate([0, 90, 0])
				cylinder(r=1.5+extrusion*2, h=cross_b_length*2,center = true,  $fn=15);
				translate([0, 0, (slot_depth+beam_width*w_t_mod+beam_width)/4])
				rotate([90, 0, 0])
				cylinder(r=1.5+extrusion*2, h=cross_b_length*2,center = true,  $fn=15);
			}
	}
}

module cross_beam(){
	difference(){
	difference(){
		cube([beam_width+beam_width*w_t_mod, beam_width+beam_width*w_t_mod, cross_b_length], center=true);
		cube([beam_width+extrusion*2, beam_width+extrusion*2, cross_b_length], center=true);

	}
	rotate([0, 90, 0])
	cylinder(r=1.5+extrusion*2, h=cross_b_length*2,center = true,  $fn=15);
	rotate([90, 0, 0])
	cylinder(r=1.5+extrusion*2, h=cross_b_length*2,center = true,  $fn=15);
	}

}
//cross_beam();

union(){
translate([0, 0, -(slot_depth+beam_width*w_t_mod+beam_width)/4])
rotate([90, 0, 0])
cross_beam();
beam_cap();
}

```


[User]
Hi, I'm looking to create a modular framing system, and I'd like your help designing the OpenSCAD files for it. I have a few specific requirements, but generally I want to make something similar to the Mini Modular Framing System on Thingiverse (thing:40611).

The system needs to have two types of pieces: "Edge" pieces and "Corner" pieces. Each piece will have a slot that runs along its length (for the edges) or two slots along its edges (for the corners). These slots are intended to hold acrylic or other flat panels.

Here are the parameters I want to be able to customize:

*   **`piece_type`**: A string, either "Edge" or "Corner", specifying the type of piece to create.
*   **`inner_depth`**: The depth of the slot. I'm currently using 12.7 mm, which is close to 1/2 inch, but I'd like to be able to specify this exactly.
*   **`inner_width`**: The width of the slot. My current design uses 2.3622 mm, about 0.093 inches, but this should be adjustable too.
*   **`wall_thickness`**: The thickness of the material surrounding the slot. I want to be able to change this (current preferred value is 2 mm, I think).
*   **`height`**: The height (or length) of the piece. For edge pieces, this is the length; for corners, it's the height of each leg. The default for edges is 100mm, while for corners it is 25.4mm.
*   **`corner_radius`**: The radius of the chamfer on the edges of the piece.
*   **`triangle_multiplier`**: This affects the width of the internal triangular supports. I'm using 3 right now.
*   **`additional_corner`**: This controls how wide the corner area is between the slots on a corner piece. I think a default of 3 might be good.

I'd like the corner pieces to be created by combining three of the edge piece designs, rotated appropriately, and then chamfering the outer edge to give it a nice rounded look. It's important that the height of the corner piece is correctly calculated; in my current design I had to do some finagling to get this right.

I need the final SCAD files to generate clean geometry without the visual artifacts that can show up in the preview window.

Could you please generate the OpenSCAD files for this system? I don't have any specific library requirements, just whatever you think is the most suitable. Thanks in advance for your help!

[Assistant]
Simple_Frame.scad:
```
//translate([54.7, -78, -280.02]) import("Corner.stl");
//translate([435.9305, -329.8393, 0]) import("100_Straight.stl");

// Type of piece
piece_type = "Corner"; // [Edge, Corner]
// Depth of the slot (original=9.8, 1/2"=12.7mm)
inner_depth = 12.7;
// Width of the slot (original=4, 0.093"=2.3622mm)
inner_width = 2.3622;
// Thickness of the walls around the slot (original=1.4, preferred=2)
wall_thickness = 2;
// Height (or length) of the piece (original Edge=100, default Corner=26.5)
height = 25.4;
// Radius of the chamfered edges (original=5)
corner_radius = 5;
// Adjust higher to make inner triangular supports wider (original=1, preferred=3)
triangle_multiplier = 3;
// Adjust higher to made the corner area (between the slots) wider (original=0, preferred=3)
additional_corner = 3;

total_thickness = inner_width + 2 * wall_thickness;
total_offset = total_thickness-corner_radius;

adj_corner_radius = corner_radius > total_thickness ? total_thickness : corner_radius;

//color([1,0,0])
translate([0-(inner_depth+total_thickness+additional_corner), 0-total_thickness, 0])
if (piece_type == "Edge") {
    chamfered_edge_piece(inner_depth, inner_width, height, wall_thickness, adj_corner_radius, triangle_multiplier, additional_corner, 0);
}
else {
    chamfered_corner_piece(inner_depth, inner_width, height, wall_thickness, adj_corner_radius, triangle_multiplier, additional_corner);
}

module chamfered_corner_piece(inner_depth, inner_width, height, wall_thickness, corner_radius, triangle_multiplier, additional_corner) {
    extra = corner_radius - total_thickness < 0 ? 0 : corner_radius - total_thickness;
    triangle_cutoff = 1;

    translate([total_thickness+inner_depth-corner_radius+additional_corner, total_thickness-corner_radius, corner_radius])
    difference() {
        sphere(r=corner_radius, $fn=50);
        translate([-corner_radius, -corner_radius*2, -corner_radius])
        cube(size = [corner_radius*2, corner_radius*2, corner_radius*2]);
        translate([-corner_radius, -corner_radius, 0])
        cube(size = [corner_radius*2, corner_radius*2, corner_radius*2]);
        translate([-corner_radius*2, -corner_radius, -corner_radius])
        cube(size = [corner_radius*2, corner_radius*2, corner_radius*2]);

        translate([-corner_radius+extra, -wall_thickness, -extra])
        cube(size = [corner_radius, corner_radius, corner_radius]);
        translate([-wall_thickness, -corner_radius+extra, -extra])
        cube(size = [corner_radius, corner_radius, corner_radius]);
        translate([-corner_radius+extra, -corner_radius+extra, -corner_radius+wall_thickness])
        cube(size = [corner_radius, corner_radius, corner_radius]);
    }

    union() {
        translate([0, 0, corner_radius])
        chamfered_edge_piece(inner_depth, inner_width, height+additional_corner, wall_thickness, corner_radius, triangle_multiplier, additional_corner, triangle_cutoff);

        rotate(a=90, v=[1,0,0])
        rotate(a=-90, v=[0,0,1])
        translate([-(inner_depth+total_thickness+additional_corner), inner_depth+additional_corner, -total_thickness+corner_radius])
        chamfered_edge_piece(inner_depth, inner_width, height+additional_corner, wall_thickness, corner_radius, triangle_multiplier, additional_corner, triangle_cutoff);

        mirror([1, 0, 0])
        rotate(a=90, v=[0,1,0])
        translate([-(inner_depth+total_thickness+additional_corner), 0, -(inner_depth+total_thickness)+corner_radius-additional_corner])
        chamfered_edge_piece(inner_depth, inner_width, height+additional_corner, wall_thickness, corner_radius, triangle_multiplier, additional_corner, triangle_cutoff);

    }
}

module chamfered_edge_piece(inner_depth, inner_width, height, wall_thickness, corner_radius, triangle_multiplier, additional_corner, triangle_cutoff) {
    total_thickness = inner_width + 2 * wall_thickness;
    difference()
    {
        edge_piece(inner_depth, inner_width, height, wall_thickness, triangle_multiplier, additional_corner, triangle_cutoff);
        chamfer_edge(inner_depth, inner_width, height, wall_thickness, corner_radius, additional_corner);
    }
}

module chamfer_edge(inner_depth, inner_width, height, wall_thickness, corner_radius, additional_corner) {
    //translate([0-corner_radius+0.01, 0-corner_radius, 0])
    total_thickness = inner_width + 2 * wall_thickness;
    translate([(inner_depth+total_thickness-corner_radius+additional_corner)+0.01, total_thickness - corner_radius, 0])
    difference() {
        difference() {
            cube([corner_radius, corner_radius, height]);
            cylinder(r=corner_radius,h=height, $fn=50);
            translate([-corner_radius*2, 0, 0]) cube([corner_radius*2, corner_radius*2, height+1]);
            translate([-corner_radius, -corner_radius*2, 0]) cube([corner_radius*2, corner_radius*2, height+1]);
        }
    }

}

module triangle(triangle_height, triangle_x, triangle_y) {
    linear_extrude(height = triangle_height)
    polygon(
        [[0,0],    // Triangle side
        [triangle_x,0],
        [triangle_x,triangle_y]],
        [[0,1,2]]
    );
}

module edge_piece(inner_depth, inner_width, height, wall_thickness, triangle_multiplier, additional_corner, triangle_cutoff) {
    total_thickness = inner_width + (2 * wall_thickness);
    triangle_edge = wall_thickness*triangle_multiplier;
    overall_depth = inner_depth + total_thickness + additional_corner;
    straight(inner_depth, inner_width, height, wall_thickness, additional_corner);
    rotate(a=90, v=[0,0,1])
    translate([0-inner_depth-additional_corner, 0-overall_depth, 0]) straight(inner_depth, inner_width, height, wall_thickness, additional_corner);
    rotate(a=90, v=[0,0,1])
    translate([-triangle_edge, -(inner_depth + additional_corner), triangle_cutoff])
    triangle(height-triangle_cutoff, triangle_edge, triangle_edge);
}

module straight(inner_depth, inner_width, height, wall_thickness, additional_corner) {
    total_thickness = inner_width + (2 * wall_thickness);
    overall_depth = inner_depth + total_thickness + additional_corner;
    difference () {
        cube([overall_depth, total_thickness, height]);
        translate([-1, wall_thickness, -1])
        cube([inner_depth+1, inner_width, height+2]);
    }
}
```


[User]
I'm looking to create a parametric card holder designed to display a number of cards in a fanned arrangement. Think of it like a hand of cards spread out, but standing upright on a table. I need it to be adjustable for different numbers of cards, the spread angle of the fan, and the card dimensions themselves. The design should include a base that has two small feet on either side to keep it stable, and a slot where the cards are held. I'd like a ghost preview of the cards as well to help visualize it.

Here are the key parameters I envision:

*   `number`: The total number of cards to be held.
*   `feetSize`: The length of the feet extending from the base.
*   `feetWidth`: The width of the feet.
*   `height`: The height of a single card.
*   `width`: The width of a single card.
*   `fan`: The total angle of the fan (the spread between the first and last card).
*   `boxExtension`: An extra bit of space for the card slot to be beyond the edge of the cards.
*   `cardThickness`: the thickness of a single card.

The holder itself should have a rectangular base with two feet on either side, as described. The card slot should be created by a `difference()` operation where a rectangular shape is subtracted using a `linear_extrude` of a rotated card shape to create a fanned opening. This subtracted shape also should account for `cardThickness`. The preview of the fanned cards should use a `linear_extrude` of a single rotated card shape to show the fan. The preview cards should use the same `linear_extrude` setup but should be rendered as a ghosted object.

I am not particularly concerned with the aesthetic of the box, as it will likely be tucked behind other elements on a table. As such, I would prefer to keep it as a single hollow rectangular box.

I'd like the code to be well commented and easy to understand. I also need to ensure that the `linear_extrude` with the twist is properly handled, as this part of the design seems a bit tricky. I'd also like the card slot to have slightly more space around the cards than just the exact dimensions of the cards themselves to allow for easier insertion and removal. I think that a good starting value would be `cardThickness` + 0.5.

Could you provide the necessary OpenSCAD code for this? I am not using any OpenSCAD libraries, but I am using the built-in modules such as `cube`, `translate`, `rotate`, `linear_extrude`, `difference`, and `square`.

[Assistant]
CardFan.scad:
```
// of cards
number = 52;

feetSize = 10;
feetWidth = 10;

// of card
height = 92;

// of card
width = 60;

// angle
fan = 35;

// beyond necessity
boxExtension = 10;

module cardHolder() {
    translate([0,0,fannedHeight/2])
    rotate([90,0,0])
    difference() {
        translate ([-(fannedWidth+2)/2,-fannedHeight/2,-(number/2+2)/2])
        cube ([fannedWidth+2,box,number/2+2]);
        translate([0,2,0])
        linear_extrude(center=true, height=number/2 ,twist=fan, slices=100)
        rotate([0,0,fan/2])
        square ([width,height],center=true);
    }
    translate([-(fannedWidth+2)/2,-(number/2+2+feetSize*2)/2,0])
    cube([feetWidth,number/2+2+feetSize*2,1]);
    translate([(fannedWidth+2)/2-feetWidth,-(number/2+2+feetSize*2)/2,0])
    cube([feetWidth,number/2+2+feetSize*2,1]);
}

module cards() {
    translate([0,0,fannedHeight/2])
    rotate([90,0,0])
    translate([0,2,0])
    linear_extrude(center=true, height=number/2 ,twist=fan, slices=100)
    rotate([0,0,fan/2])
    square ([width,height],center=true);

}
$fn=90;

// ; height
box = (width*sin(fan/2)+4)+boxExtension;
fannedWidth = width*cos(fan/2)+height*sin(fan/2);
fannedHeight = width*sin(fan/2)+height*cos(fan/2);

cardHolder();
%cards();
```
CardFan-v2.scad:
```
// of cards
number = 24;

feetSize = 10;
feetWidth = 10;

// of card
height = 92;

// of card
width = 60;

// angle
fan = 45;

// beyond necessity
boxExtension = 10;

module cardHolder() {
    translate([0,0,fannedHeight/2])
    rotate([90,0,0])
    difference() {
        translate ([-(fannedWidth+2)/2,-fannedHeight/2,-(number/2+2)/2])
        cube ([fannedWidth+2,box,number/2+2]);
        translate([0,2,0])
        linear_extrude(center=true, height=number/2 ,twist=fan, slices=number/2)
        rotate([0,0,fan/2])
        square ([width,height],center=true);
    }
    translate([-(fannedWidth+2)/2,-(number/2+2+feetSize*2)/2,0])
    cube([feetWidth,number/2+2+feetSize*2,1]);
    translate([(fannedWidth+2)/2-feetWidth,-(number/2+2+feetSize*2)/2,0])
    cube([feetWidth,number/2+2+feetSize*2,1]);
}

module cards() {
    translate([0,0,fannedHeight/2])
    rotate([90,0,0])
    translate([0,2,0])
    linear_extrude(center=true, height=number/2 ,twist=fan, slices=100)
    rotate([0,0,fan/2])
    square ([width,height],center=true);

}
$fn=90;

// ; height
box = (width*sin(fan/2)+4)+boxExtension;
fannedWidth = width*cos(fan/2)+height*sin(fan/2);
fannedHeight = width*sin(fan/2)+height*cos(fan/2);

cardHolder();
%cards();
```


[User]
I'd like to design a Gameboy cartridge holder, and I'm hoping you can help me generate the OpenSCAD code for it. It needs to be parametric so I can customize it for different cartridge types and number of slots.

Here's what I'm envisioning:

*   **Cartridge Types:** It should support both Gameboy Advance (GBA) and Gameboy Classic (GBC) cartridges.
*   **Number of Slots:** The number of cartridges it can hold should be adjustable. Let's say a minimum of 5 and a maximum of 15 slots should be supported.
*   **Cartridge Removal:** I'd like an option to choose whether cartridges can be easily removed individually without having to shift adjacent cartridges.
*   **Base:** There should be a base with a consistent thickness.
*   **Support Rods:** There should be support rods at each corner, connecting the base to the top. These support rods should go all the way to the height of the cartridges when in their slots.
*   **Cartridge Slots:** The slots themselves should be designed to securely hold the cartridges.
*   **Parameters:** I'd need to be able to adjust the various dimensions of the cartridges such as width, depth, and height (both GBA and GBC), the pocket height and the gap between each cartridge to allow for removal. I'd also like to set the base height, the support rod width/depth, a few padding parameters for the support rods and pockets.

I think that should cover the basics of the design. Let me know if you have any questions or need clarification on any of these points. I assume you'll use standard OpenSCAD modules but feel free to use some popular libraries if it will be helpful. I don't have any requirements regarding which libraries, but would like to know before getting the code.

[Assistant]
cart_holder.scad:
```
// Gameboy Cartridge Holder version 2.0
// Design by Patrick Connelly (patrick@deadlypenguin.com)

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

/* [Cartridge] */
cartridge_type = "gba"; //[gba: Gameboy Advanced,gbc:Gameboy Classic,both: Both]
number_of_cartridges = 10; //[5:15]
allow_cartridge_removal = "no"; // [yes,no]

/* [Hidden] */
cart_width = 58;
cart_depth = 8;
gba_cart_height = 35;
gbc_cart_height = 65;

cart_pocket_height = 14;
cart_pocket_gap = 2;

base_height = 16;

no_remove_padding = 10;

support_rod_width = 7;
support_rod_depth = support_rod_width;

support_pocket_inner_padding = 1;

support_pocket_width = support_rod_width + support_pocket_inner_padding;
support_pocket_depth = support_rod_depth + support_pocket_inner_padding;
support_pocket_height = 10;
support_pocket_padding = 1;

cart_height = (cartridge_type == "gba") ? gba_cart_height : gbc_cart_height;
cart_padding = (allow_cartridge_removal == "no") ? no_remove_padding : no_remove_padding + cart_height;

// Default to gba with no-remove
support_rod_height = (cart_height - cart_pocket_height) + cart_padding + support_pocket_height;

echo(support_rod_height);
support_rod_padding = support_pocket_padding + ((support_pocket_width - support_rod_width) / 2);

base_depth = (cart_depth + cart_pocket_gap) * number_of_cartridges + cart_pocket_gap;

side_rail_width = support_pocket_width + support_pocket_padding * 2;

base_width = cart_width + side_rail_width * 2;

module base() {
	cube([base_width, base_depth, base_height]);
}

module support_pockets() {
	support_pocket_x = base_width - support_pocket_padding - support_pocket_width;
	support_pocket_y = base_depth - support_pocket_padding - support_pocket_width;
	union() {
		translate([support_pocket_padding,support_pocket_padding,-1])
			cube([support_pocket_width, support_pocket_depth, support_pocket_height + 1]);
		translate([support_pocket_x, support_pocket_padding, -1])
		cube([support_pocket_width, support_pocket_depth, support_pocket_height + 1]);
		translate([support_pocket_padding, support_pocket_y, -1])
		cube([support_pocket_width, support_pocket_depth, support_pocket_height + 1]);
		translate([support_pocket_x, support_pocket_y, -1])
		cube([support_pocket_width, support_pocket_depth, support_pocket_height + 1]);
	}
}

module support_rods() {
	support_rod_x = base_width - support_rod_padding - support_rod_width;
	support_rod_y = base_depth - support_rod_padding - support_rod_width;

	union() {
		translate([support_rod_padding,support_rod_padding,base_height])
			cube([support_rod_width, support_rod_depth, support_rod_height + 1]);
		translate([support_rod_x, support_rod_padding, base_height])
		cube([support_rod_width, support_rod_depth, support_rod_height + 1]);
		translate([support_rod_padding, support_rod_y, base_height])
		cube([support_rod_width, support_rod_depth, support_rod_height]);
		translate([support_rod_x, support_rod_y, base_height])
		cube([support_rod_width, support_rod_depth, support_rod_height + 1]);
	}
}

module cartridge_slots() {
	union() {
		for (i = [0:number_of_cartridges - 1]) {
			current_y = cart_pocket_gap + ((cart_depth + cart_pocket_gap) * i);
			translate([side_rail_width, current_y, base_height - cart_pocket_height + 1])
			cube([cart_width, cart_depth, cart_pocket_height + 1]);
		}
	}
}

difference() {
	union() {
		base();
		support_rods();
	}
	support_pockets();
	cartridge_slots();
}
```


[User]
Hey, I'm looking to get some help designing a parametric rigid coupler for connecting a NEMA 17 motor shaft to a 5/16" threaded rod, and I'd like it to be flexible enough that I can adapt it to other sizes and uses in the future. I’ve got an existing design in mind, I guess, but I’d like you to take it and make sure it’s really well-parameterized and easy to use.

I've been working with a design similar to the one used in the Mostly Printed CNC project, but I've already made some modifications to make it fit a little better on my hardware. Basically, it's a cylindrical coupler with a smaller diameter bore on one end for the motor shaft, a larger bore on the other for the threaded rod, and a gap that runs the length, so you can tighten down the coupler on the two shafts with a couple of bolts.

Here are the specific parameters I’m thinking of using to make it fully parametric. I'd also want an option to have it output in two halves, in case I need to replace a coupling without disassembling anything else.

1.  **Outer Diameter of the Coupler (OD):** I'd like to be able to set this.
2.  **Taper Height for Coupler (H2):**  The coupler has a taper at one end, so this height needs to be configurable.
3.  **Taper Outer Diameter of Coupler (ODT):** I need a parameter for the outer diameter of the taper end of the coupler.
4.  **Total Height of Coupler (Ht):** The overall height of the coupler.
5.  **Small Coupler Connection (M5):**  This is the diameter for the motor shaft bore.
6.  **Large Coupler Connection (M8):** This is the diameter for the threaded rod bore (5/16").
7.  **Gap Cut Size for Tightening Coupler (GapDist):** How wide the gap is that allows the coupler to be tightened.
8.  **Coupling Bolt Diameter (M4):**  The diameter of the tightening bolt holes.
9.  **Coupling Nut Diameter (M4Nut):** The diameter of the counterbores for the bolt nuts.
10. **Bolt Length (BoltLen):** The length of the tightening bolts.
11. **X Offset for Bolt Tightening Holes (M4_DX):** How far from the center the bolt holes are.
12. **1st Z Offset for Bolt Tightening Holes (M4_DZ1):** Vertical position of the lower bolt hole.
13. **2nd Z Offset for Bolt Tightening Holes (M4_DZ2):** Vertical position of the upper bolt hole.
14. **Resolution for large circles (IresBig):** Setting for how many sides the large circles have to create a smoother surface.
15. **Resolution for small circles (IresSmall):** How many sides the small circles should have.
16. **Part Type (PartType):** This will control whether it generates one whole coupler or two halves. (1 = one piece; 2 = two pieces).

I think that’s everything.  For the bolts and nuts, I'm planning to use #6 size bolts, which is about 3.65mm and will have 9.25 mm nuts. If you can make it parametric for those, that would be fantastic. I'd like the OpenSCAD file to use standard units of millimeters and to be easily customizable. And, could you make sure that the nuts have a hex shaped cutout?  I don't want to have to use cylinders for those. I also don’t want to use any hard-coded values if it can be avoided. Also, use the BOSL2 library for any of the 2D or 3D primitives, if possible. That should make it easier to follow the code too.

Thanks!

[Assistant]
RigidCoupler_rev2.scad:
```
//Parametric Rigid Coupler
//By David Bunch 8/9/2015
//
//This design is based on the Rigid Coupler for the
//Mostly printed CNC machine http://www.thingiverse.com/thing:724999
//To couple a Nema 17 Motor shaft to a 5/16" threaded rod
//I only changed the connection diameter of the 5/16" threaded rod
//The little bolts used to tighten this design are #6 x 1/2" bolts
//If using metric, M4 x 14mm is closest
//CUSTOMIZER VARIABLES

//1. Outside Diameter of Coupler
OD = 19.6;

//2. Taper Height for Coupler
H2 = 1.16;

//3. Taper Outside Diameter of Coupler
ODT = 12.2;

//4. Total Height of Coupler
Ht = 28.0;

//5. Small Coupler Connection
M5 = 5.0;

//6. Large Coupler Connection
M8 = 7.94;                   //Originally 7.6mm (5/16" = 7.9375mm)

//7. Gap Cut size for Tightening Coupler
GapDist = 2.2;

//8. Coupling Bolt Diameter used for Tightening (#6 screw used here)
M4 = 3.65;              //Use 4.0 if using M4 bolts

//9. Coupling Bolt Diameter used for Tightening (#6 Nut default)
M4Nut = 9.25;           //if using M4 nuts, use 8.08mm

//10. Bolt Length (1/2" long bolt is default)
BoltLen = 12.7;         //This should still be a good length for
                        //14mm or 16mm length bolts,
                        //they will just stick out a little beyond locknut

//11. X Offset for Bolt Tightening Holes
M4_DX = 6.75;

//12. 1st Z Offset for Bolt Tightening Holes
M4_DZ1 = 7.0;

//13. 2nd Z Offset for Bolt Tightening Holes
M4_DZ2 = 21.0;

//14. Resolution large Circles
IresBig = 88;

//15. Resolution of Small Circles
IresSmall = 34;

//16. 1 part or 2 Halves
PartType = 1;   //2 Halves are useful if your 2 shafts are already in place
                //This maybe useful if you need to replace a broken coupling
                //without removing Z tower

//CUSTOMIZER VARIABLES END

M4_Thk = (BoltLen - GapDist - 5.2) / 2;
echo("M4_Thk = ", M4_Thk);

echo("H2 = ",H2);
H1 = Ht - H2;
echo("H1 = ",H1);

GapHalf = GapDist / 2;
M4Nut_DY = M4_Thk + GapHalf;

Rad = OD / 2;
//Draw the Main Coupler
module DrawUnion()
{
    union()
    {
        cylinder(d=OD,h=H1,$fn=IresBig);
        translate([0,0,H1])
        cylinder(d1=OD,d2=ODT,h=H2,$fn=IresBig);
    }
}
module HorizontalHoles()
{
    translate([0,0,M4_DZ1])
    BoltAndNutCut();            //Lower Horizontal Hole
    translate([0,0,M4_DZ2])
    BoltAndNutCut();            //Upper Horizontal Hole
}
//Cut out the holes, gap & draw final part
module DrawFinal()
{
    difference()
    {
        DrawUnion();
        translate([0,0,-1])
        cylinder(d=M5,h=Ht+2,$fn=IresSmall);
        translate([0,0,Ht / 2])
        cylinder(d=M8,h=Ht,$fn=IresSmall);
        translate([-(Rad+.01),-GapHalf,-1])
        cube([Rad,GapDist,Ht+2]);       //Cut gap for tightening
//Cut bottom bolt tightening hole
        HorizontalHoles();
        if (PartType == 2)
        {
            rotate([0,0,180])
            {
                HorizontalHoles();  //Cut horizontal holes for tightening bolts
                translate([-(Rad+.01),-GapHalf,-1])
                cube([Rad,GapDist,Ht+2]);       //Cut gap for tightening
            }
        }
    }
}
//These are the holes for the tightening bolts & nuts
module BoltAndNutCut()
{
//Drill hole all the way through
    translate([-M4_DX,Rad,0])
    rotate([90,0,0])
    cylinder(d=M4,h=OD,$fn=IresSmall);
//Cut for hex nut on one end
    translate([-M4_DX,-M4Nut_DY,0])
    rotate([90,0,0])
    rotate([0,0,30])
    cylinder(d=M4Nut,h=Rad,$fn=6);
//Cut for hex nut on the other end
    translate([-M4_DX,M4Nut_DY,0])
    rotate([-90,0,0])
    rotate([0,0,30])
    cylinder(d=M4Nut,h=Rad,$fn=6);
}
DrawFinal();
```