[User]
Okay, I'm looking to create some parametric OpenSCAD files for a tabletop game, specifically for a dungeon crawler called Pocket Dungeons. I'm envisioning two sets of pieces: dungeon tiles and counters.

For the tiles, I want to be able to generate various corridor shapes, including dead ends, straight corridors, bends, hairpins, Y-junctions, and importantly, forks that go left *or* right (the original game only had a single fork type), T-junctions, tridents, X-junctions, K-junctions, and even a five-way "tree" and a six-way "star". I'd also like to have all of these shapes in a "room" version, where they have a square room built into the tile rather than just a corridor.

The tiles should be hexagonal, and I'd like to specify the radius from the center to a corner. I need to control the width of the corridor paths, the thickness of the paths themselves, and the overall tile thickness, as well as a lip between the path and the base. I'd also like to have a brick pattern engraved into the base of the tile. I'd like to be able to control the size of the bricks, the size of the mortar lines, and the radius of the rounded corners.

I'd like the code to generate a module for each type of tile, and another for the overall tile which will call that module, render the bricks, and add the lip. I also need a top-level "all" option for viewing all tiles at once. Color will be a nice bonus.

For the counters, I don't want the flat pictograms; I would prefer small 3D models. I'll need a base disc, with a rim, that's 15mm across and 2mm high with a chamfered bottom edge and a recessed area on top to hold models. I'm thinking a chest, stairs, and a hazard symbol would be a good start. The chest should be a simple box with a band around the middle. The stairs should be small, spiraling steps that rise into the recess, and the hazard symbol should be a tiny skull.

I'd like a module for each counter type (chest, stairs, and hazard) and another module for the general counter disc. Each counter should also be offset in the x-axis to keep them from overlapping when the script is rendered.

I think that's everything. I'd like to be able to control all these parameters and easily generate new variations of the tiles and counters using parametric values. Also, please do not include any external libraries. I'd like to keep this simple.

[Assistant]
dungeon-tiles.scad:
```
/*

Alternative Pocket Dungeons tiles procedurally generated so I can have a
corridor with a fork off in one direction only.

*/

part = "all"; // [dead_end, straight, bend, hairpin, Y, fork_left, fork_right, T, trident, X, K, tree, star, room_end, room_straight, room_bend, room_hairpin, room_Y, room_fork_left, room_fork_right, room_T, room_trident, room_X, room_K, room_tree, room_star, all]

/* [Hidden] */

draft = false;
$fs = draft ? 1 : 0.1;
$fa = 2;

print = "fork_left";
print = "room_hairpin";
print = "bend";
print = "nothing";
print = part;

q = 0.02;

total_thickness = 2;
path_width = 5;
path_thickness = 1;

tile_radius = 15; // mm from one corner of a tile to the opposite corner

module part (name)
{
  if (print=="all" || print== name)
    children ();
}

module hexgaon (r)
{
  circle (r= r, $fn= 6);
}

module bricks ()
{
  corner_radius = 0.5;
  width = 4.3;
  height = 2.2;
  between_bricks = 0.7;
  dx = width + between_bricks;
  dy = height + between_bricks;
  rows = floor (tile_radius*2 / dy / 2) * 2; // /2 then *2 to get even number so /2 later on doesn't yield fraction
  columns = floor (tile_radius*2 / dx / 2) * 2;

  module brick ()
  {
    hull ()
    for (y= [-1, +1])
    for (x= [-1, +1])
    translate ([(width / 2 - corner_radius) * x, (height / 2 - corner_radius) * y])
      circle (r= corner_radius);
  }

  for (y= [-rows/2 : +rows/2])
  {
    offset = y % 2 == 0 ? dx/2 : 0;
    for (x= [-columns/2 : +columns/2])
    translate ([offset + dx*x, dy*y])
      brick ();
  }
}

module slice (offset, height, bricks)
{
  translate ([0, 0, offset])
  linear_extrude (height= height)
  difference ()
  {
    intersection ()
    {
      hexgaon (tile_radius);
      if (bricks)
        bricks ();
    }
    children ();
  }
}

module path (a)
{
  hull ()
  {
    circle (r= path_width/2);
    rotate (-a)
    translate ([0, tile_radius])
      circle (r= path_width/2);
  }
}

module tile (name, angles, room, xpos, ypos)
{
  SAND = [0.9, 0.7, 0.3];
  GRAY = [0.4, 0.4, 0.4];
  LIGHT_GRAY = [0.6, 0.6, 0.6];

  lip = 0.5;

  module space ()
  {
    union ()
    {
      for (a= angles)
        path (a);
      if (room)
        square ([15.8, 15.8], center=true);
    }
  }
  part (name)
  translate (print == name ? [0, 0] : [32*xpos, 32*ypos])
  {
    color (SAND)
      slice (0, path_thickness, false);
    color (GRAY)
    slice (path_thickness, lip, false)
      space ();
    color (LIGHT_GRAY)
    slice (path_thickness + lip, total_thickness - path_thickness - lip, true)
      space ();
  }
}

TILES = [
[
  [
    ["dead_end",        [ 180 ],                          false ],
  ],
  [
    ["straight",        [ 180, 0 ],                       false ],
    ["bend",            [ 180, -60 ],                     false ],
    ["hairpin",         [ 180, -120 ],                    false ],
  ],
  [
    ["Y",               [ 180, -60, +60 ],                false ],
    ["fork_left",       [ 180, 0, -60 ],                  false ],
    ["fork_right",      [ 180, 0, +60 ],                  false ],
    ["T",               [ 180, -120, -60 ],               false ],
  ],
  [
    ["trident",         [ 180, -60, 0, +60 ],             false ],
    ["X",               [ 180, -60, 0, 120 ],             false ],
    ["K",               [ 180, 0, 60, 120 ],              false ],
  ],
  [
    ["tree",            [ 180, -120, -60, +60, +120 ],    false ],
  ],
  [
    ["star",            [ 180, -120, -60, 0, +60, +120 ], false ],
  ],
],
[
  [
    ["room_end",        [ 180 ],                          true ],
  ],
  [
    ["room_straight",   [ 180, 0 ],                       true ],
    ["room_bend",       [ 180, -60 ],                     true ],
    ["room_hairpin",    [ 180, -120 ],                    true ],
  ],
  [
    ["room_Y",          [ 180, -60, +60 ],                true ],
    ["room_fork_left",  [ 180, 0, -60 ],                  true ],
    ["room_fork_right", [ 180, 0, +60 ],                  true ],
    ["room_T",          [ 180, -60, -120 ],               true ],
  ],
  [
    ["room_trident",    [ 180, 0, -60, +60 ],             true ],
    ["room_X",          [ 180, 0, -60, +120 ],            true ],
    ["room_K",          [ 180, 0, +60, +120 ],            true ],
  ],
  [
    ["room_tree",       [ 180, -60, -120, +60, +120 ],    true ],
  ],
  [
    ["room_star",       [ 180, 0, -60, -120, +60, +120 ], true ],
  ],
]
];

for (class= [0 : len (TILES) - 1])
{
  tiles = TILES [class];
  for (group= [0 : len (tiles) - 1])
  {
    tiles = tiles [group];
    for (i= [0 : len (tiles) - 1])
    {
      tile = tiles [i];
      tile (tile [0], tile [1], tile [2], 5 * class + i, group);
    }
  }
}

```
counters.scad:
```
/*

Alternative Pocket Dungeons counters with models instead of embossed pictograms.

*/

draft = false;
$fs = draft ? 1 : 0.1;
$fa = 2;

q = 0.02;

// The counters are 15mm across and 2mm high

disc_outer_radius = 15 / 2;
rim_width = 1;
disc_inner_radius = disc_outer_radius - rim_width;
chamfer_radius = 0.5;
recess_depth = 2.5; // space in which to place objects
total_thickness = chamfer_radius + recess_depth;

module slice( r, a)
{
  ar = r * sqrt(2);

  intersection()
  {
    circle( r= r);

    if ( a < 360)
      polygon([
        [ 0,              0 ],
        [ 0,              ar ],
        [ sin(a*1/4)*ar,  cos(a*1/4)*ar ],
        [ sin(a*2/4)*ar,  cos(a*2/4)*ar ],
        [ sin(a*3/4)*ar,  cos(a*3/4)*ar ],
        [ sin(a*4/4)*ar,  cos(a*4/4)*ar ],
      ]);
  }
}

module counter()
{
  // Base
  translate([0,0, chamfer_radius ])
  rotate_extrude()
    hull()
    {
      // Chamfer the bottom in an effort to avoid "Elephant's foot"
      translate([ disc_outer_radius - chamfer_radius, 0])
      difference()
      {
        circle( r= chamfer_radius );
        translate([ -99, 0 ])
          square([ 199, 99 ]);
      }
      mirror([ 0, 1 ])
        square( [ q, chamfer_radius ] );
    }

  // Walls
  translate([0,0, chamfer_radius ])
  {
    linear_extrude( height= total_thickness - chamfer_radius )
    difference()
    {
      circle( r= disc_outer_radius );
      circle( r= disc_inner_radius );
    }
  }
  // Move to the upper surface of the base
  translate([0,0, chamfer_radius ])
    children();
}

module chest()
{
  width = recess_depth * 1.5;
  height = 1;
  band_width = 0.4;

  module xt( total_height, width, offset )
  {
    radius = total_height - height;
    depth = radius * 2;
    translate([ 0, 0, offset ])
    linear_extrude( height= width ) mirror([0,1])
    {
      translate([ -depth/2, 0])
        square([ depth, height ]);
      translate([0, height ])
        circle( r= radius );
    }
  }

  rotate([ -90, 0,0])
  {
    xt( recess_depth - 0.2, width, -width/2 );
    xt( recess_depth, band_width, -width/2+0.3*0 );
    xt( recess_depth, band_width, -band_width/2 );
    xt( recess_depth, band_width, width/2-band_width-0.3*0 );
  }
}

module stairs()
{
  steps = 8;
  step_height = recess_depth / steps;
  step_angle = ( 360 - 90) / ( steps);
  radius = disc_inner_radius * 1 / 2;

  cylinder( r= radius / 4, h= recess_depth);

  for( s= [ 1 : steps ])
  rotate( -( 90 + step_angle * ( s - 1) ) )
  linear_extrude( height= step_height*s)
    slice( radius, step_angle );
}

module hazard()
{
  intersection()
  {
    translate([ 0, -1, 0 ])
    scale( 0.05)
    translate([ 0, 0, -30 ])
    rotate([ -90, 0, 0 ])
      import("wfu_cbi_skull-hollow_jawless.stl", convexity=3);
    linear_extrude( height= 999, convexity=3)
      square( [ 999, 999 ], center=true);
  }
}

for (x= [-20, -40])
translate ([x, 0, 0])
//translate([ -20, 0, 0 ])
counter()
  chest();

for (x= [0, 20])
translate ([x, 0, 0])
//translate([ +20, 0, 0 ])
counter()
  hazard();

*counter()
  stairs();

```


[User]
Hey, I'm looking to generate a 3D model of a three-eyed monster in OpenSCAD, and I need some help creating the code. I have a basic concept, and want to be able to adjust certain features parametrically using the customizer.

The monster is essentially a sphere for its body with a large, gaping mouth carved out. It should have three eyes, one central eye above the mouth, and one on each side of its head, angled slightly outwards. The central eye should have a sort of "stem" connecting it to the head, while the side eyes can be embedded more directly. I'd also like to have an option to add a smaller version of the monster *inside* the larger monster's mouth, as well as add fangs on either side of the mouth.

I'd like the following parameters to be adjustable:
*   `mouth_dude`: A boolean (1 or 0) to control whether the smaller monster is inside the mouth
*   `the_teeth`: A boolean (1 or 0) to control whether the fangs are present
*   `middleEye`: A boolean (1 or 0) to control whether the central eye is present

I don't need any libraries, and I'm happy with a single .scad file to encapsulate everything. The monster should also have a flat bottom, achieved by subtracting a cube from the base. The body sphere should have a diameter of around 60, with the mouth being a scaled sphere cut out. I would like the "stem" of the center eye to be a hull, that has a base cylinder, and a top one, slightly smaller, and offset forward and up. The other eyes will have small spheres for pupils, slightly offset forward. The smaller monster inside the mouth will just be a scaled-down copy of the larger monster, just without any additional mouths, teeth, or eyes of its own.

Let me know if you have any questions, and thanks!

[Assistant]
EHhalloween3.scad:
```
//Elizabeth Henning
//Monster 2.0 (Printable Version)

mouth_dude = 1; //[1:On,0:Off]
the_teeth = 1; //[1:On, 0:Off]
middleEye = 1; //[1:On, 0:Off]

/* [Hidden] */
$fn=120;
body = 30;
differenceCube=50;

module eyeStem()
{
    translate([0,0,body*1.9])
    {
        hull()
        {
            cylinder(r=8, h=.1);
            translate([0,2,16])
                cylinder(r=4,h=.1);
        }
    }
}

module teeth()
    {
        cylinder(r=2, r2=.5, h=10);

    }

 module theDude()
 {
    difference()
    {
        translate([0,0,body]) //body
        {
            sphere(r=body);
        }

        //the mouth
        union()
        {
            translate([body,0,body+body/10])
            {
                scale([1.1,1.1,1.1])
                {
                    difference()
                    {
                        sphere(r=body/2);
                        union()
                        {
                            translate([0,0,-body])
                                cube([body*3, body*3, body*2], center=true);
                            translate([0, -body*3/2, 0])
                                cube([body*3, body*3, body*3]);
                        }

                    }
                }
            }

        }
    }

    //the eyes
    if (middleEye==1)
    {
        translate([0,-2,0]) //top eye
        {

            eyeStem();
            translate([0,0,body*1.9+20])
            {
                sphere(r=9);
                translate([6,0,2])
                    sphere(r=5); //pupil
            }
        }
    }

    translate([0,12,-2]) //left eye
    {
        rotate([30,0,0])
            eyeStem();
    }
    translate([0,-25,body*1.9+10])
    {
        sphere(r=8);
        translate([5,0,2])
            sphere(r=4); //pupil
    }

    translate([0,-15,-2]) //right eye
    {
        rotate([-25,0,0])
            eyeStem();
    }
    translate([0,20,body*1.9+10])
    {
        sphere(r=6.5);
        translate([4.5,0,2])
            sphere(r=3); //pupil
    }
}

rotate([0,0,180])
{
    translate([0,0,-8])
    {
        difference()
        {
            theDude();
            cube([100,100,16], center=true); //make bottom flat
        }

        if (mouth_dude==1)
        {
            translate([22,0,30]) //mini Dude
                scale([.2,.2,.2])
                    theDude();
        }

        if (the_teeth==1)
        {
            translate([25.5,-11,32.9]) //big left tooth
                rotate([0,5,0])
                        teeth();

            translate([25.5,11,32.9]) //big right tooth
                rotate([0,5,0])
                    teeth();
        }

    }
}
```


[User]
Hey, I'm trying to create a customizable helical coil in OpenSCAD, and I'm finding it a bit tricky to get the cross-section right, especially with the wire angle and distortion from wrapping it around the coil's radius.

I've got a basic concept in mind: I need a module called `HelicalCoil` that takes parameters like the overall height of the coil, the wire diameter, the coil's mean diameter (the diameter of the circle the wire's center follows), the number of turns, and detail parameters for the end section and extrusion. I want to be able to adjust these to create different sized and shaped coils.

Essentially, what I’m going for is this: I want to generate the shape by linear extrusion of a carefully calculated 2D polygon, which represents the cross section of the wire at the start of the coil. This section needs to be an ellipse (due to the wire angle), then this ellipse needs to be wrapped around the coil radius. This complicated shape is then extruded vertically while twisted to create the helical coil.

Could you help me generate the required `.scad` files to do this? I don't have any specific libraries in mind. I would like a single `.scad` file for this project.

[Assistant]
HelicalCoil.scad:
```
height = 30;
wireDiameter = 5;
// Mean coil diameter (diameter that center of wire goes through.  Actual outer diameter will be larger by wireDiameter/2)
coilDiameter = 10;
turns = 3;
// How many vertices in the wire's calculated end section
endSectionDetail = 100;
// How vertical slices per turn, for linear extrude operation
slicesPerTurn = 100;

HelicalCoil(height, wireDiameter, coilDiameter, turns, slicesPerTurn, endSectionDetail);

module HelicalCoil(height, wireDiameter, coilDiameter, turns, slicesPerTurn, endSectionDetail) {
  spacing = height / turns;
  r1 = coilDiameter / 2;
  r2 = wireDiameter / 2;
  pitchAngle = atan( spacing / (2 * PI * r1));
  //difference() { // verify that cross section at z=0 is more or less a circle
    //translate([0,0,-spacing])
    linear_extrude(height=height, twist=360*turns, slices=slicesPerTurn*turns)
      HelicalCoilEndSection(r1, r2, height, spacing, endSectionDetail);
    //rotate([-pitchAngle, 0, 0]) translate([0,height/2, 0]) cube(size=height, center=true);
  //}
}

module HelicalCoilEndSection(r1, r2, length, spacing, detail) {
  dt = 360 / detail;

  // generate a circle from trapezoidal sections
  // x is offset by r1, the coil radius
  /*
  for(t = [-90: dt : 90]) {
    polygon(points = [
      [r1 + r2 * cos(t), r2 * sin(t)],
      [r1 + r2 * cos(t + dt), r2 * sin(t + dt)],
      [r1 - r2 * cos(t + dt), r2 * sin(t + dt)],
      [r1 - r2 * cos(t), r2 * sin(t)],
    ]);
  }
  */

  // modify the above to generate an ellipse
  // this represents the cross section of a straight wire angled through the plane
  pitchAngle = atan( spacing / (2 * PI * r1));
  scaleY = 1 / sin(pitchAngle); // scale y to get angled cross section
  /*
  for(t = [-90: dt : 90]) {
    polygon(points = [
      [r1 + r2 * cos(t), scaleY * r2 * sin(t)],
      [r1 + r2 * cos(t + dt), scaleY * r2 * sin(t + dt)],
      [r1 - r2 * cos(t + dt), scaleY * r2 * sin(t + dt)],
      [r1 - r2 * cos(t), scaleY * r2 * sin(t)],
    ]);
  }
  */

  // using the above parametric equation for cross section of angled wire:
  // x1 = r1 + r2 * cos(t)
  // y1 = scaleY * r2 * sin(t)
  // now need to wrap this function around a circle.
  //   -interpret y1 as arc length as it is wrapped around the larger circle, convert to angle degrees
  //      angle = 360 * y1 / (2 * PI * r1)  => 360 * (scaleY * r2 * sin(t)) / (2 * PI * r1)
  //   -simplify out the constants so that   angle = c * sin(t)
  c = 360 * scaleY * r2 / (2 * PI * r1);
  //   -interpret x1 as the radius in new circle calculation
  // xWrapped = x1 * cos(angle) => (r1 + r2 * cos(t)) * cos(c * sin(t))
  // yWrapped = x1 * sin(angle) => (r1 + r2 * cos(t)) * sin(c * sin(t))
  // now plug these xWrapped and yWrapped equations into the loop
  ///*
  for(t = [-90: dt : 90]) {
    polygon(points = [
      [(r1 + r2 * cos(t)) * cos(c * sin(t)), (r1 + r2 * cos(t)) * sin(c * sin(t))],
      [(r1 + r2 * cos(t + dt)) * cos(c * sin(t + dt)), (r1 + r2 * cos(t + dt)) * sin(c * sin(t + dt))],
      [(r1 - r2 * cos(t + dt)) * cos(c * sin(t + dt)), (r1 - r2 * cos(t + dt)) * sin(c * sin(t + dt))],
      [(r1 - r2 * cos(t)) * cos(c * sin(t)), (r1 - r2 * cos(t)) * sin(c * sin(t))]
    ]);
  }
  //*/

}
```


[User]
I'd like to create a levitating magnetic foot, similar to the one I saw on Thingiverse (thing:996590). It consists of two main parts: a top "foot" that floats, and a bottom base. Both pieces have embedded magnets arranged in a ring that allow the top piece to levitate above the bottom one.

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

*   **`foot_radius`**: This controls the overall radius of the top floating foot.
*   **`foot_height`**: This is the height or thickness of the floating foot. Thicker feet allow for stronger magnets to be used.
*   **`magnet_radius`**: The radius of the magnets used.
*   **`magnet_height`**: The thickness (or height) of the magnets used.
*   **`fudge_factor`**: This adjusts the space between the two pieces. A larger value creates more space and prevents rubbing, while smaller values may reduce wobble.
*   **`mag_fudge_factor`**: Tolerance for the magnet holes.
*   **`wall_width`**: The thickness of the wall on the bottom base piece.
*  **`magnet_n`**: Number of magnets on each side of the foot.

The top foot should be a cylinder with a small rectangular protrusion on the side. It should have circular cutouts to hold the magnets.

The bottom base should be a cylinder with an opening in the top to receive the foot. It needs cutouts in the walls for the magnets, mirroring the ones on the top piece. Additionally, there should be a notch cut into the wall to allow access to the interior. This is a subtle visual detail, not functional, and it should be located directly opposite the side protrusion on the top part.

I'm looking for a parametric OpenSCAD design where all of these parameters are adjustable.

[Assistant]
levitatingmagnetfoot.scad:
```
//the size of the top(floating) foot
foot_radius = 30;

//How how thick the floating foot should be(this should be increased for stronger magnets)
foot_height = 18;

//the radius of the magnet
magnet_radius = 4.85;

//the thickness of the magnet
magnet_height = 6.33;

//how much extra space should be between the two pieces (increase if peices are rubbing too much, decrease if they wobble too much)
fudge_factor = 0.6;

//how much tolerance for the magnet holes
mag_fudge_factor = 0.1;

//How thick the wall is on the bottom piece.
wall_width = 3;

//Number of magnets on each side of the foot
magnet_n = 4;

module hull_magnet() {
	cylinder(r=(magnet_radius+mag_fudge_factor), h=magnet_height, $fn=500);
}

module magnet_ring(flip) {
	for( i = [0:magnet_n]) {
		translate([flip*2*magnet_radius*cos(i*(360/magnet_n)), flip*2*magnet_radius*sin(i*(360/magnet_n)), 0])
			hull_magnet();
	}
}
module top(radius, height, magnet_r, magnet_h){
	difference() {
		union() {
				//main cylinder
				cylinder(r=radius, h=height, $fn=500);

				//side protrusion
				translate([radius-1,-2.5,0])
					cube([wall_width,wall_width,height]);
		}
		translate([0,0,height-magnet_h]) magnet_ring(1);
	}
}
module bottom(inner_radius, inner_height, magnet_r, magnet_h){
	difference() {
		//main cylinder
		cylinder(r=(inner_radius+wall_width+fudge_factor), h=(inner_height+wall_width+magnet_h), $fn=500);

		//hull out space for top piece
		translate([0,0,wall_width+magnet_h])
			cylinder(r=inner_radius+fudge_factor, h = inner_height, $fn=500);

		//cut out a notch in the wall
		translate([-1*(inner_radius+wall_width)-fudge_factor,-0.5*wall_width,wall_width+magnet_h])
			cube([wall_width+1,(wall_width+fudge_factor),inner_height]);

		translate([0,0,wall_width]) magnet_ring(-1);
	}
}
//magnet_ring();
//hull_magnet();
top(foot_radius, foot_height, magnet_radius, magnet_height);
translate([2*foot_radius+fudge_factor+10,0,0]) bottom(foot_radius, foot_height, magnet_radius, magnet_height);
```


[User]
Hey there, I'm looking for some OpenSCAD code to generate customizable washers, kinda like the ones I'm using for my blinds.

Basically, I need a ring, and I want to be able to specify the outer diameter, the inner diameter, and the thickness of the washer. I'd also like to set the resolution of the circle, like how many sides it has, so I can make it smooth or more polygon-y depending on what I'm after.

So, those are the parameters I need to adjust:

*   `res`: Resolution of the circle (number of sides).
*   `inner_dia`: Inner diameter of the washer.
*   `outer_dia`: Outer diameter of the washer.
*   `thickness`: Thickness or depth of the washer.

The design would just be a simple cylinder with an outer diameter, and a second cylinder subtracted from it that's the inner diameter, making a ring. Center it in the origin of the coordinate system.

I'd prefer it if the resolution was an integer and the diameters and thickness were in millimeters - this should be straightforward, I hope.

I don't need any fancy libraries, just the standard OpenSCAD stuff. Could you generate an .scad file for this? Thanks!

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

By Harlo
 - 29/10/2015
 - Customizable Ring Washer

*/

/////////////////////////////////////////////
//////////////// VARIABLES
/////////////////////////////////////////////

// Resolution of circle
res = 120; //[32, 64, 120, 200]
// Inner diameter in mm that will be cut out
inner_dia = 7; //[1:0.5:199]
// Outer diameter in mm that will form the main body of the washer
outer_dia = 20; //[10:0.5:200]
// Thickness/Depth in mm of the washer
thickness = 0.5; //[0.5:0.5:10]

/////////////////////////////////////////////
//////////////// RENDERS
/////////////////////////////////////////////

final();

/////////////////////////////////////////////
//////////////// MODULES
/////////////////////////////////////////////

module final(){
    difference(){
        outer_circle();
        inner_circle();
    }

}

module outer_circle(){

    cylinder (h = thickness, d = outer_dia, center = true, $fn = res);

}

module inner_circle(){
     cylinder (h = thickness+1, d = inner_dia, center = true, $fn = res);

}
```


[User]
I'd like to create a customizable pencil holder with spiral cutouts. I'm imagining a cylindrical cup with a series of charm cutouts spiraling up the side. I want to be able to control several things: the height of the cup, the number of cutouts, the scale of the cutouts in the X and Y direction, and the 'depth' or Z scale of the cutouts (how far they poke into the cup). I'd also like to be able to choose from a few different charm shapes, like a star, balloon, blue moon, pacman, or the Spurs logo.

It looks like in the example, the cutouts are spiraled by moving each one up a bit and rotating them around the Z axis, and I'd like that same effect. The charm choices should also all be centered relative to their origin before the transformation to put them on the cup. I do not want to use any libraries. Can you help me with the OpenSCAD code?

[Assistant]
spiral-star-pencil-holder-NO-LIBRARY.scad:
```

charmName = "balloon"; // [star, balloon, blue-moon, pacman, Spurs]

charmCount = 28; // [1:100]

charmXYScale = 0.9;   // [0.1:0.1:5]

cupHeight = 150; // [75:300]

/* [Hidden] */
maxRandom = 0;
charmIndcies = rands(0,maxRandom, charmCount);

charmXYScales = rands(charmXYScale, charmXYScale, charmCount);

depthScale = 40.2;
charmDepthScales = rands(depthScale, depthScale, charmCount);

difference()
{
	cup(cupHeight=cupHeight);

	// uses the default value for the charmStls parameter
	rotatedCutouts(charmCount = charmCount,
				   charmIndcies = charmIndcies,
				   charmXYScales = charmXYScales,
				   charmDepthScales = charmDepthScales,
				   charmStls = ["../../../../shapes/star/star.stl"]);
}

//use <../../../../shapes/cup/cup.scad>;
/**
  * Create a cylindrical cup.
  */
module cup(cupHeight=70, innerRadius=53)
{
	difference()
	{
		centered = false;

		// outer part of the cup
		translate([0,0,0])
		cylinder (h = cupHeight, r=55, center = centered, $fn=100);

		// subtracted inner cup
		translate([0,0,5])
		cylinder (h = cupHeight, r=innerRadius, center = centered, $fn=100);
	}
}

//use <../../../../cutouts/rotated-spiral-cutouts.scad>;
/**
  * This is a library for evenly spaced cutouts.
*/
module rotatedCutouts(charmCount = 16,
					  charmXYScales,
					  charmStls = ["../shapes/oshw/oshw.stl"],
					  charmIndcies = [],  // the vector of array index needs required
					  charmDepthScales,
					  yTranslateFactor = 5,
					  yTranslateMinimum = 0,
					  zRotationFactor = 30)
{
    for ( i = [0 : charmCount-1] )
    {

        single_rand = charmIndcies[i];

        charmIndex = round(single_rand);

		yTranslate = (i * yTranslateFactor) + yTranslateMinimum;

		zRotation = i * zRotationFactor;

        rotate([
                90,
                0,
                zRotation
        ])
        // normally x,y,z - but here y moves the little spurs up and down
        translate([15, yTranslate, 30])
        scale([
		       charmXYScales[charmIndex],
			   charmXYScales[charmIndex],
			   charmDepthScales[charmIndex] //20.2])
			 ])
//        import(charmStls[charmIndex])
//		star(1);

		if(charmName == "balloon")
		{
			echo("no sucka!");
			balloon();
		}
		else if(charmName == "blue-moon")
		{
			blueMoon();
		}
		else if(charmName == "pacman")
		{
			pacman();
		}
		else if(charmName == "Spurs")
		{
			spursa(5);
		}
		else
		{
			// star is the default
			star(1);
		}

    }
}

// from the OpenSCAD tutotials
module star_poly_Selection(h)
{
  scale([25.4/90, -25.4/90, 1]) union()
  {
    linear_extrude(height=h)
      polygon([[9.080000,-22.000000],[10.922500,-17.093750],[12.213125,-14.728281],[13.890000,-13.020000],[15.773906,-12.298125],[18.041250,-12.022500],[22.500000,-11.910000],[34.390000,-10.968750],[40.862812,-10.133906],[45.500000,-9.000000],[28.500000,4.610000],[21.270000,12.170000],[22.870000,22.000000],[27.500000,43.000000],[8.500000,31.580000],[-0.500000,27.200000],[-10.500000,32.320000],[-28.500000,43.000000],[-22.870000,21.000000],[-21.690000,11.090000],[-28.500000,4.130000],[-45.500000,-11.000000],[-11.500000,-13.000000],[-0.500000,-43.000000],[2.289219,-38.828594],[4.908750,-33.096250],[9.080000,-22.000000]]);
  }
}

module star(h)
{
	star_poly_Selection(h);
}

// ../../../../shapes/balloon/balloon.scad
module balloon()
{
	union ()
	{
		// balloon
		scale ([0.8, 1, 1])
		cylinder (h = 4, r=10, center = true, $fn=100);

		// middle knot piece
		knotPiece();

		// left knot piece
		rotate ([0, 0, -6.5])
		knotPiece();

		// right knot piece
		rotate ([0, 0, 6.5])
		knotPiece();
	}
}

module knotPiece()
{
	translate ([0, -10.5, 0])
	scale ([0.3, 0.8, 1])
	cylinder (h = 4, r=2, center = true, $fn=100);
}

// ../../../../shapes/blue-moon/blue-moon.scad
module blueMoon()
{
	difference()
	{
		// blue moon
		cylinder (h = 4, r=10, center = true, $fn=100);

		// top cutout
		translate([5, 5, 0])
		cylinder (h = 4.20, r=6, center = true, $fn=100);

		// bottom cutout
		translate([5, -5, 0])
		cylinder (h = 4.20, r=6, center = true, $fn=100);

		// remainder cutout
		translate([10, 0, 5])
		color("red")
		cylinder (h = 14.20, r=6, center = true, $fn=100);
	}
}

// http://www.thingiverse.com/thing:241081/
module pacman()
{
	//linear_extrude(height=50, center=true, convexity = 10, twist = 0)
	difference ()
	{
	  cylinder(r=20, center=true, h=5);

	  linear_extrude(height=10, center= true)
	//  linear_extrude(height=50, center=true, convexity = 10, twist = 0)
	//  {
		  polygon(points=[[0,0],[100,60],[100,-60]], paths=[[0,1,2]]);
	//  };
	}
}

//pacman();

// http://www.thingiverse.com/thing:603115
module poly_Selection(h)
{
  scale([25.4/90, -25.4/90, 1]) union()
  {
    linear_extrude(height=h)
      polygon([[13.500000,-56.000000],[29.500000,-55.000000],[54.500000,-55.000000],[58.503750,-55.048750],[60.522969,-55.341719],[62.290000,-56.020000],[64.325156,-57.853594],[66.241250,-60.541250],[69.240000,-66.000000],[80.500000,-87.000000],[106.280000,-135.000000],[118.870000,-159.000000],[122.780000,-198.000000],[124.023594,-204.882813],[125.843750,-209.652500],[128.457031,-214.095937],[132.080000,-220.000000],[148.490000,-248.000000],[153.376719,-256.487656],[155.041895,-259.143652],[156.518750,-260.956250],[158.055137,-262.086816],[159.898906,-262.696719],[165.500000,-263.000000],[214.500000,-263.000000],[214.500000,-213.000000],[213.360000,-196.000000],[213.360000,-154.000000],[213.495000,-150.462500],[213.360000,-147.000000],[196.920000,-117.000000],[156.350000,-45.000000],[125.920000,9.000000],[120.671250,18.592500],[117.385469,23.577187],[115.794199,25.366055],[114.320000,26.400000],[112.797344,26.797500],[110.981250,26.970000],[107.500000,27.000000],[79.500000,27.000000],[65.500000,28.000000],[31.500000,28.000000],[27.943750,28.030000],[24.500000,28.600000],[22.684180,29.597539],[20.548438,31.277812],[15.792500,35.922500],[7.670000,45.000000],[-36.500000,94.040000],[-25.500000,94.040000],[-15.500000,95.000000],[1.500000,95.000000],[22.500000,96.000000],[2.500000,114.080000],[-38.500000,149.000000],[-23.230000,165.000000],[-3.230000,188.000000],[14.500000,210.000000],[-66.500000,189.000000],[-91.500000,263.000000],[-92.970664,261.624141],[-94.426562,259.592500],[-97.197500,254.302500],[-101.500000,244.000000],[-121.500000,198.000000],[-200.500000,222.000000],[-174.840000,182.000000],[-154.500000,151.000000],[-187.500000,128.020000],[-214.500000,108.000000],[-166.500000,103.830000],[-135.500000,101.000000],[-137.410000,77.000000],[-139.590000,41.000000],[-140.500000,31.000000],[-138.108496,32.343340],[-135.722969,34.055469],[-131.038750,38.223750],[-122.500000,47.000000],[-111.500000,57.040000],[-94.500000,74.000000],[-77.500000,27.000000],[-107.500000,26.000000],[-117.196250,25.451250],[-122.812656,24.814531],[-126.090000,23.980000],[-127.513906,22.488438],[-128.773750,20.335000],[-130.730000,16.000000],[-138.200000,-1.000000],[-140.195000,-5.868750],[-140.649688,-8.406719],[-140.330000,-11.000000],[-134.780000,-21.000000],[-120.780000,-45.000000],[-74.650000,-124.000000],[-55.110000,-158.000000],[-46.570000,-206.000000],[-30.280000,-238.000000],[-21.920000,-254.000000],[-19.818750,-257.793750],[-18.535156,-259.646094],[-17.110000,-260.980000],[-15.251406,-261.684844],[-12.943750,-261.983750],[-8.500000,-261.990000],[5.500000,-261.000000],[19.500000,-261.000000],[31.500000,-260.040000],[43.500000,-260.040000],[43.500000,-217.000000],[44.500000,-200.000000],[44.500000,-162.000000],[43.800000,-154.000000],[28.100000,-127.000000],[-14.500000,-56.000000],[13.500000,-56.000000]]);
  }
}

module spursa(h)
{
	poly_Selection(h);
}

```


[User]
Hi! I'm looking to design a customizable compass cutter for use with hobby knives and pens, similar to the one I've been using. I have an existing design (attached), but it's not parametric and could use improvement.

I envision it consisting of a main ruler component and two tip holder components that can be adjusted along the ruler and then locked in place with M2 screws.

The ruler should have markings every centimeter. I need it to be easily adjusted in length for different sized circles.

The tip holder should have two parts. One part should grip the ruler and the other should accommodate either a standard pen or a hobby knife, specifically with an approximately 12mm diameter at the base and 8mm at the cutting part. I'd like the pen/knife holder to have some way of being secured tightly, potentially using a set screw, but the exact design of the set screw can be something you decide on. The design should also be able to use M2 screws for locking the holder in place along the ruler.

I also need a separate tip component that is placed at the end to create the actual center of the circle. This part has a hole through it for the pencil and should be able to hold itself on the surface.

I'm hoping to get OpenSCAD code for this design that uses parameters for the ruler length, ruler width and thickness, the diameters and depths of the pen and knife holes in the holders, the diameter of the tip, and the diameter of the hole for the tip.

I prefer to keep all the pieces in separate modules, as it makes it easier to adjust and reuse. I'd appreciate if the code was well commented too, so I can figure out what's going on in it. Also, I would prefer a standard parametric rounded cube module that can be used in my other projects, as I use them very often.

I think this is all. Thanks for your help!

[Assistant]
compasso.scad:
```
$fn = 30;
/* [Global] */
ruller_size = 100; // [100:250]
tip_hole_diameter = 3; // [1:6]

base();
translate([20, 15, 0]) tipHolder();
translate([0, 15, 0]) tipHolder();
translate([45, 20, 0]) tip();
translate([60, 20, 0]) tip();

module base(){
	difference(){
		cube([ruller_size,9.8,4.8]);
		for (z = [0:ruller_size/10-2])
		{
	   translate([(z * 10) + 10, 0, 4])
    	 cube([0.5,4,1]);
		}
		for (z = [0:ruller_size/10-1])
		{
	   translate([(z * 10) + 5, 0, 4])
    	 cube([0.5,2,1]);
		}
	}
}

module tipHolder(){
	difference(){
		roundedcube(12.8,16,7,5,5,0.01,0.01);
		translate([-1, 5, 1]) cube([14.8,10,5]);
		translate([6.4, 6, 3.5]) rotate([90,0,0]) cylinder(	r=1, h=8);
	}
	difference(){
		union(){
			difference(){
				translate([0, 16, 0]) roundedcube(12.8,13,18,0.01,0.01,5,5);
				translate([6.4, 21.75, -1]) cylinder(r=4.75, h=20);
			}
			translate([3.9, 27.75, 6.25]) roundedcube(5,5,5,0.01,0.01,1,1);
		}
		translate([6.4, 33.75, 8.75]) rotate([90,0,0]) cylinder(r=1, h=8);
	}
}

module tip(){
    difference(){
        union(){
            cylinder(d=12, h=1);
            translate([0,0,1]) cylinder(d=8, h=14);
        }
        translate([0,0,-0.5]) cylinder(d=tip_hole_diameter, h=16);
    }
}

module roundedcube(xdim ,ydim ,zdim,rdim1, rdim2, rdim3, rdim4){
hull(){
	translate([rdim1,rdim1,0]) cylinder(r=rdim1, h=zdim);
	translate([xdim-rdim2,rdim2,0]) cylinder(r=rdim2, h=zdim);

	translate([rdim3,ydim-rdim3,0]) cylinder(r=rdim3, h=zdim);
	translate([xdim-rdim4,ydim-rdim4,0]) cylinder(r=rdim4, h=zdim);
}
}
```


[User]
Hey, I'd like a parametric OpenSCAD design for a spider, something I can customize for printing. I'd like the spider to be printable with supports, and I'd like the option to print it without supports as well. I have some basic ideas about the structure that I think could be useful!

For the overall look: I'm envisioning a stylized spider, not necessarily anatomically correct, so we can keep it simple. The design should consist of a head, a body, and 8 legs. I want to be able to adjust the overall size of the spider.

For the parts:
*   The head can be a slightly flattened sphere with simple extruded cylinders for the mouth and small spheres for the eyes
*   The body can be an elongated sphere shape.
*   The legs can be made up of joined cylinders and spheres, and be angled as they come off of the body.
*   The supports should be relatively small cylinders that connect the body to the print bed.
*   I'd like to be able to choose whether or not to generate the supports.

For customization, I'd like these parameters:
*   **Render Quality:**  A way to control the smoothness of the model (basically `$fn` in OpenSCAD), like a number from 30 to 50.
*   **Project Size:**  Overall height of the spider in millimeters (e.g., 25-50).
*  **Parts to Render:** Option to choose to render only the spider, or the spider and the supports for printing.

Could you generate the necessary SCAD files for this? Thanks!

[Assistant]
costumizer-spider.scad:
```
//BEGIN CUSTOMIZER
//quality of spider
Render_Quality = 30; //[30:50]
//hieght of model
Project_size = 25; //[25:50]
Parts_to_render = 1; //[1:no_supports, 2:supports(printable)]
//END CUSTOMIZER
$fn= Render_Quality;

scale([Project_size/25, Project_size/25, Project_size/25]){
if (Parts_to_render==1){
  difference(){
      union(){
        head();
        body();
        all_legs();
      }
      translate([0,-76,-4])
            cube([100,150,5]);
  }
}
if (Parts_to_render==2){
  difference(){
    union(){
        head();
        body();
        all_legs();
        all_supports();
    }
        translate([0,-10,-4])
            cube([100,100,5]);
    }
  }
 }
module all_supports(){
    //supports
        union(){
            translate([48,-3,0])
                cube([4,2,2.65]);
            translate([50,4,0])
                cylinder(h=3.02,r1=3,r2=1);
            translate([48,-5.5,0])
                cube([4,2,4.6]);
            }
        union(){
            translate([27,1.5,.9])
                support();
            translate([21,13,.9])
                support();
            translate([21,26,.9])
                support();
            translate([25,40,.9])
                support();
            translate([73,2.5,.9])
                support();
            translate([78,13,.9])
                support();
            translate([79,26,.9])
                support();
            translate([74,40,.9])
                support();

        }
    }
module all_legs(){
    //legs
            translate([64,34,0])
               rotate([0,0,210])
                    leg();
            translate([67,26,0])
               rotate([0,0,180])
                    leg();
            translate([67,17,0])
               rotate([0,0,160])
                    leg();
            translate([64,10,0])
               rotate([0,0,140])
                    leg ();
            translate([35,34,0])
               rotate([0,0,330])
                    leg();
            translate([32.5,26,0])
               rotate([0,0,0])
                    leg();
            translate([32.5,17,0])
               rotate([0,0,20])
                    leg();
            translate([35.5,10,0])
               rotate([0,0,45])
                    leg ();
        }
module leg(){
   translate([8,0,7])
    rotate([0,320,0])
        cylinder(r=2.2, h=15);
    translate([-2.5, 0, 19])
        sphere(r=2.6);
    translate([-10, 0, 12])
        rotate([0,45,0])
            cylinder(r=2.2, h=10);
     translate([-10,0,12])
        sphere(r=2.5);
     rotate([0,10,0])
        translate([-12,0,-.5])
            cylinder(r1=2.5, r2=2.2, h=9.5);
     translate([-11.9,0,1.5])
         sphere(r=3);
}

module support(){
    cylinder(h=1.1, r=5);
}
module head(){
    //head
            translate([50,4,7])
                scale([6,6,4])
                    sphere(r=1);
    //eyes
            translate([49,-1,9])
                sphere(r=.5);
            translate([51,-1,9])
                sphere(r=.5);
    //mouth
            translate([49,-3,5.5])
                rotate([200,0,0])
                    cylinder(h=3,r1=1,r2=.2);
            translate([51,-3,5.5])
                rotate([200,0,0])
                    cylinder(h=3,r1=1,r2=.2);
        minkowski(){
            sphere(r=1);
            union(){
                translate([48.5,-3,5.5])
                    cube([1,3,1]);
                translate([50.5,-3,5.5])
                    cube([1,3,1]);
            }
        }
    }
module body(){
     //body
             translate([50,22,7.5])
                   scale([4,5,2.5])
                        sphere(r=3);
}
```


[User]
Okay, so I'm looking to create a 3D model of a Halloween-themed demon pumpkin guy, and I'd like it to be parametric in OpenSCAD so I can easily adjust the size and detail level.  I've got a basic concept, and I'd like to have the following features.

The main body should have a sort of rounded, pumpkin-like shape, with some variation to it. I'm envisioning it as kind of a lumpy, stretched cylinder that transitions from a wider base to a narrower top, with some bulges and indentations added. I imagine this should be achievable using a `hull()` of multiple differently-placed cylinders, and then using `difference()` on this base to carve out some shapes. I think I'd like some of these carve-outs to be customizable as well. I'm envisioning several "cuts" into the body and some spherical details that are "added" to the surface - it needs to look organic and kind of gnarly.

He'll need two arms, one on each side, attached at roughly the shoulder areas, but angled outwards. I'd like these to be composed of cylinders, spheres, and possibly some tapered cylinders to form the forearms and hands. I'd like the forearm and hands to have a bit of a gnarled look to them, maybe with a bit of branching to the "fingers" at the ends. The left arm and right arm are mirrored, with the left arm being on the right, and vice versa.

The head should be a separate piece, connected to the top of the body. I'm thinking of a more distorted, pumpkin-ish shape, again made from `hull()` of overlapping spheres and some cuts to add detail. It'll need some menacing, uneven teeth and a kind of "sucked-in" face. I was thinking that the "sucked-in" part could be achieved with cylinders and spheres. The teeth could be conical cylinders that are made by `difference()` cuts on a base face shape.

Finally, he needs a weapon. I'm thinking either a demon fork or a kind of magic truncheon. The fork should have a long cylindrical handle with several tines that branch out near the end. The magic truncheon would have a similar handle but then a more bulbous, rounded end, kind of like a mace head. I'd like a way to switch between these two weapons.

I'd also like to include a base for the model for 3D printing. This should be a simple rectangular prism that's wider and longer than the character, but shorter in height.

I'd like the entire model to be parametric in the following ways, with a reasonable range for each:
*   **Project Size:** A general scaling factor for the entire model, perhaps between 100 and 300.
*   **Project Quality:** This should control the `$fn` variable for smoother curves, ranging from 30 (draft quality) to 60 (production quality).
*   **Weapon Selection:** A toggle to choose between the Demon Fork and the Magic Truncheon.
*   **Parts to Render:** This would be a selector to render each component individually or all together.

I think that covers everything.  I'm not particularly worried about specific measurements of any individual parts, but I need the ability to scale the whole thing up and down so that all of the proportions are relative to each other, using the Project Size parameter. Please generate the necessary OpenSCAD code for this. I expect this to be several files, but it should all work together. No specific libraries needed.

[Assistant]
M.F_Holloween_Project_2.scad:
```
// BEGIN CUSTOMIZER
//select part(s) to render
 Parts_To_Render = 7;// [1:body, 2:PrintingBase, 3:Head, 4:Larm, 5:Rarm, 6:Fork, 7:Printable Whole Project,8:Real Project,9:DLC-Magic Truncheon,10:all]
 Project_Size = 100;// [100:300]
 Project_Quality= 30;// [30:Draft,60:Production]

 Weapon_to_select = 1;// [1:Demon Fork, 2: Magic Truncheon]

 // [CUSTOMIZER END]
$fn = Project_Quality;
scale_factor = 156*1;  // at project_size of this size the scaling factor is 1

module PrintingBase(){
//Printing Base

translate([-25,0,0])
cube([290,528,14],center=true);
}

module body(){

union(){

//Body

difference(){
union(){
difference(){
union(){
hull(){
cylinder (r1=100, r2=30, h=300);
translate([0,-130,0]) rotate([-20,0,0])
cylinder(r=10,h=310);
    translate([70,100,0]) rotate([20,-15,0])
cylinder(r=10,h=310);
translate([70,-100,0]) rotate([-20,-15,0])
cylinder(r=10,h=310);
translate([-100,-120,0]) rotate([-20,20,0])
cylinder(r=10,h=310);
translate([-160,0,0]) rotate([0,30,0])
cylinder(r=10,h=310);
translate([-120,120,0]) rotate([20,20,0])
cylinder(r=10,h=310);
translate([0,130,0]) rotate([20,0,0])
cylinder(r=10,h=310);}
translate([100,0,0]) rotate([0,-13,0])
   cube([5,15,280]);
translate([100,7.5,20])
sphere(r=5);
translate([93,7.5,60])
sphere(r=5);
translate([85,7.5,100])
sphere(r=5);
translate([75,7.5,140])
sphere(r=5);
translate([65,7.5,180])
sphere(r=5);
translate([55,7.5,220])
sphere(r=5);
translate([45,7.5,260])
sphere(r=5);}
difference(){
translate([35,0,310]) rotate([0,90,0])cylinder(r=30,h=20);
translate([34.5,0,320]) rotate([0,90,0])cylinder(r=30,h=21);
}}
difference(){
    translate([0,-55,220]) rotate([68,0,0])
      cylinder(r=30,h=10);
  translate([0,-54.5,220]) rotate([68,0,0])
    cylinder(r=10,h=21);
}
difference(){
translate([-15,65,220]) rotate([112,0,0])
cylinder(r=30,h=10);
    translate([-15,65.5,220]) rotate([112,0,0])
cylinder(r=10,h=14);
}
difference(){
translate([-25,0,270]) scale([0.7,0.7,0.7])rotate([0,30,0])
cylinder(r=100,h=10);

}
}
union(){
translate([0,0,320])
sphere(r=50);
cylinder (r1=90, r2=30, h=300);
}
}
}
}
//L arm
module Larm(){
translate([0,0,-100])
rotate([-66,-40,0]){
translate([0,-55,220])
rotate([68,0,0])
cylinder(r=10,h=70);
translate([0,-125,250])
sphere(r=12);
translate([0,-125,250])
rotate([20,70,0])
cylinder(r=9,h=90);
translate([80,-158,280])
sphere(r=11);
translate([80,-158,280])
rotate([20,30,0])
cylinder(r=4,r2=1,h=55);
translate([80,-158,280])
rotate([45,35,0])
cylinder(r=3.8,r2=1,h=54);
translate([80,-158,280])
rotate([65,45,0])
cylinder(r=3,r2=1,h=50);
translate([80,-158,280])
rotate([-20,45,0])
cylinder(r=4,r2=1,h=54);
translate([80,-158,280])
rotate([-50,45,0])
cylinder(r=4,r2=1,h=45);
}
}
//R arm
module Rarm(){

translate([-15,-35,-150])
rotate([67,0,0]){
difference(){
union(){

translate([-15,65,220])
rotate([-68,0,0])
cylinder(r=10,h=70);
translate([-17,130,245])
sphere(r=12);
translate([-17,130,245])
rotate([-36,90,0])
cylinder(r=9,h=90);
    difference(){
translate([57,185,245])
sphere(r=15);
translate([57,185,220])
cylinder(r=9,h=50);
    }
}
translate([57,185,220])
cylinder(r=9,h=50);
}
}
}

//Fork
module Fork(){
translate([0,60,0]){
translate([57,185,0])
cylinder(r=6,h=380);
translate([57,185,0])
cylinder(r=15,h=11,center=true);
translate([55,185,380])
rotate([40,0,0])
cube([6,65,6]);
translate([55,189,386])
rotate([140,0,0])
cube([6,65,6]);
translate([57,185,380])
cylinder(r1=6,r2=1,h=100);
translate([57,140,420])
cylinder(r1=6,r2=1,h=40);
translate([57,230,420])
cylinder(r1=6,r2=1,h=40);
}
}
//Head
module Head(){
difference(){
union(){
difference(){
    union(){

translate([0,0,320]) rotate([0,0,0])scale([1.3,1,1])sphere(r=50);

translate([0,0,320]) rotate([0,0,45])scale([1.3,1,1])sphere(r=50);
translate([0,0,320]) rotate([0,0,90])scale([1.3,1,1])sphere(r=50);
translate([0,0,320]) rotate([0,0,-45])scale([1.3,1,1])sphere(r=50);
translate([0,0,320]) rotate([0,0,-90])scale([1.3,1,1])sphere(r=50);}
hull(){
translate([30,-40,340])
    cube([25,25,2]);
translate([30,-40,330])
    cube([25,2,20]);
    }
hull(){
translate([28,15,340])
    cube([25,25,2]);
translate([28,40,330])
    cube([25,2,20]);
    }
    hull(){
translate([45,0,318])
    cube([20,2,10]);
translate([47,-4,318])
    cube([20,10,2]);
}
difference(){
translate([35,0,310]) rotate([0,90,0])cylinder(r=30,h=20);
translate([34.5,0,320]) rotate([0,90,0])cylinder(r=30,h=21);
}
}

//Teeth
mirror([0,1,0]){
translate([40,8,290])
rotate([10,45,0])
cylinder(r1=5,r2=1,h=15,center=true);
translate([40,22,295])
rotate([35,45,0])
cylinder(r1=5,r2=1,h=15,center=true);
translate([40,25,310])
rotate([65,45,0])
cylinder(r1=5,r2=1,h=15,center=true);
}
translate([40,8,290])
rotate([10,45,0])
cylinder(r1=5,r2=1,h=15,center=true);
translate([40,22,295])
rotate([35,45,0])
cylinder(r1=5,r2=1,h=15,center=true);
translate([40,25,310])
rotate([65,45,0])
cylinder(r1=5,r2=1,h=15,center=true);
//Face
hull(){
translate([0,0,365])
cylinder(r=20,h=5);
translate([0,0,367])
cylinder(r=10,h=7);
}

translate([0,0,369]) rotate([0,-20,0])
cylinder(r=7,h=30);

translate([-8,0,389]) rotate([0,-40,0])
cylinder(r=5,h=30);
 }
 translate([0,0,320])
 sphere(r=50);
 }
 }
 module Real_Project(){
   //Head

     difference(){
union(){
difference(){
    union(){

translate([0,0,320]) rotate([0,0,0])scale([1.3,1,1])sphere(r=50);

translate([0,0,320]) rotate([0,0,45])scale([1.3,1,1])sphere(r=50);
translate([0,0,320]) rotate([0,0,90])scale([1.3,1,1])sphere(r=50);
translate([0,0,320]) rotate([0,0,-45])scale([1.3,1,1])sphere(r=50);
translate([0,0,320]) rotate([0,0,-90])scale([1.3,1,1])sphere(r=50);}
hull(){
translate([30,-40,340])
    cube([25,25,2]);
translate([30,-40,330])
    cube([25,2,20]);
    }
hull(){
translate([28,15,340])
    cube([25,25,2]);
translate([28,40,330])
    cube([25,2,20]);
    }
    hull(){
translate([45,0,318])
    cube([20,2,10]);
translate([47,-4,318])
    cube([20,10,2]);
}
difference(){
translate([35,0,310]) rotate([0,90,0])cylinder(r=30,h=20);
translate([34.5,0,320]) rotate([0,90,0])cylinder(r=30,h=21);
}
}

//Teeth
mirror([0,1,0]){
translate([40,8,290])
rotate([10,45,0])
cylinder(r1=5,r2=1,h=15,center=true);
translate([40,22,295])
rotate([35,45,0])
cylinder(r1=5,r2=1,h=15,center=true);
translate([40,25,310])
rotate([65,45,0])
cylinder(r1=5,r2=1,h=15,center=true);
}
translate([40,8,290])
rotate([10,45,0])
cylinder(r1=5,r2=1,h=15,center=true);
translate([40,22,295])
rotate([35,45,0])
cylinder(r1=5,r2=1,h=15,center=true);
translate([40,25,310])
rotate([65,45,0])
cylinder(r1=5,r2=1,h=15,center=true);
//Face
hull(){
translate([0,0,365])
cylinder(r=20,h=5);
translate([0,0,367])
cylinder(r=10,h=7);
}

translate([0,0,369]) rotate([0,-20,0])
cylinder(r=7,h=30);

translate([-8,0,389]) rotate([0,-40,0])
cylinder(r=5,h=30);
 }
 translate([0,0,320])
 sphere(r=50);
 }
 if(Weapon_to_select == 1){
 //Fork
 translate([57,185,0])
cylinder(r=6,h=380);
translate([57,185,0])
cylinder(r=15,h=11,center=true);
translate([55,185,380])
rotate([40,0,0])
cube([6,65,6]);
translate([55,189,386])
rotate([140,0,0])
cube([6,65,6]);
translate([57,185,380])
cylinder(r1=6,r2=1,h=100);
translate([57,140,420])
cylinder(r1=6,r2=1,h=40);
translate([57,230,420])
cylinder(r1=6,r2=1,h=40);
 }
 if(Weapon_to_select == 2){
//DLC
 translate([57,185,0])
cylinder(r=6,h=380);
translate([57,185,0])
cylinder(r=15,h=11,center=true);
translate([55,185,380])
cylinder(r1=6,r2=20,h=30);
 translate([55,185,438])
 sphere(r=30);
 }

 //Rarm
 difference(){
union(){

translate([-15,65,220])
rotate([-68,0,0])
cylinder(r=10,h=70);
translate([-17,130,245])
sphere(r=12);
translate([-17,130,245])
rotate([-36,90,0])
cylinder(r=9,h=90);
    difference(){
translate([57,185,245])
sphere(r=15);
translate([57,185,220])
cylinder(r=9,h=50);
    }
}
translate([57,185,220])
cylinder(r=9,h=50);
}
//Larm
   translate([0,-55,220])
rotate([68,0,0])
cylinder(r=10,h=70);
translate([0,-125,250])
sphere(r=12);
translate([0,-125,250])
rotate([20,70,0])
cylinder(r=9,h=90);
translate([80,-158,280])
sphere(r=11);
translate([80,-158,280])
rotate([20,30,0])
cylinder(r=4,r2=1,h=55);
translate([80,-158,280])
rotate([45,35,0])
cylinder(r=3.8,r2=1,h=54);
translate([80,-158,280])
rotate([65,45,0])
cylinder(r=3,r2=1,h=50);
translate([80,-158,280])
rotate([-20,45,0])
cylinder(r=4,r2=1,h=54);
translate([80,-158,280])
rotate([-50,45,0])
cylinder(r=4,r2=1,h=45);
//Body
union(){

//Body

difference(){
union(){
difference(){
union(){
hull(){
cylinder (r1=100, r2=30, h=300);
translate([0,-130,0]) rotate([-20,0,0])
cylinder(r=10,h=310);
    translate([70,100,0]) rotate([20,-15,0])
cylinder(r=10,h=310);
translate([70,-100,0]) rotate([-20,-15,0])
cylinder(r=10,h=310);
translate([-100,-120,0]) rotate([-20,20,0])
cylinder(r=10,h=310);
translate([-160,0,0]) rotate([0,30,0])
cylinder(r=10,h=310);
translate([-120,120,0]) rotate([20,20,0])
cylinder(r=10,h=310);
translate([0,130,0]) rotate([20,0,0])
cylinder(r=10,h=310);}
translate([100,0,0]) rotate([0,-13,0])
   cube([5,15,280]);
translate([100,7.5,20])
sphere(r=5);
translate([93,7.5,60])
sphere(r=5);
translate([85,7.5,100])
sphere(r=5);
translate([75,7.5,140])
sphere(r=5);
translate([65,7.5,180])
sphere(r=5);
translate([55,7.5,220])
sphere(r=5);
translate([45,7.5,260])
sphere(r=5);}
difference(){
translate([35,0,310]) rotate([0,90,0])cylinder(r=30,h=20);
translate([34.5,0,320]) rotate([0,90,0])cylinder(r=30,h=21);
}}
difference(){
    translate([0,-55,220]) rotate([68,0,0])
      cylinder(r=30,h=10);
  translate([0,-54.5,220]) rotate([68,0,0])
    cylinder(r=10,h=21);
}
difference(){
translate([-15,65,220]) rotate([112,0,0])
cylinder(r=30,h=10);
    translate([-15,65.5,220]) rotate([112,0,0])
cylinder(r=10,h=14);
}
difference(){
translate([-25,0,270]) scale([0.7,0.7,0.7])rotate([0,30,0])
cylinder(r=100,h=10);

}
}
union(){
translate([0,0,320])
sphere(r=50);
cylinder (r1=90, r2=30, h=300);
}
}
}

}
module DLC(){
translate([57,185,0])
cylinder(r=6,h=380);
translate([57,185,0])
cylinder(r=15,h=11,center=true);
translate([55,185,380])
cylinder(r1=6,r2=20,h=30);
 translate([55,185,438])
    sphere(r=30);
}

 scale([Project_Size/scale_factor, Project_Size/scale_factor, Project_Size/scale_factor]) {

if(Parts_To_Render == 1){
    body();
}
if(Parts_To_Render == 2){
    PrintingBase();
}
if(Parts_To_Render == 3){
    Head();
}
if(Parts_To_Render == 4){
    Larm();
}
if(Parts_To_Render == 5){
    Rarm();
}
if(Parts_To_Render == 6){
    Fork();
}
if(Parts_To_Render == 7){
   union(){
       body();
       PrintingBase();
       Head();
       Larm();
       Rarm();
    if(Weapon_to_select == 2){
     DLC();}
  else
       Fork();
   }
   }
if(Parts_To_Render == 8){
    Real_Project();
   }

if(Parts_To_Render == 9){
    DLC();
}

if(Parts_To_Render == 10){
    translate([300,-330,-270])
    Head();
    body();
    translate([20,-100,0])
    Rarm();
    translate([20,100,-10])
    Larm();
    translate([400,0,0])
    PrintingBase();
    Fork();
    translate([40,-40,0])
    DLC();

}
}
```


[User]
Hey, I'm looking for an OpenSCAD design for a simple set-screw shaft coupler. I need it to be parametric so I can easily adjust it for different shaft sizes and coupler dimensions.

Basically, it should be a cylinder with two different sized bores in it, one on each end of the cylinder, to fit different sized shafts. And I'll need set screw holes. Here are the basic parameters I'd like to be able to control:

*   **`coupler_height`**: The overall height of the coupler.
*   **`coupler_dia`**: The outer diameter of the coupler.
*   **`shaft1_dia`**: The diameter of the first shaft it will be coupled to.
*   **`shaft2_dia`**: The diameter of the second shaft it will be coupled to.
*   **`set_screw_dia`**: The diameter of the holes for the set screws (I'll be using this to tap my own threads as I go.)

I'd like the bore for the first shaft to start at the bottom, and the bore for the second shaft to start halfway up the coupler. The set screw holes should be radially distributed around the circumference and should go all the way into the bore of the shaft on the corresponding half of the coupler. I'd like two set screw holes, at 0 and 90 degree rotations, for each bore - one at 25% of the coupler height and another at 75%. So four total set screw holes.

I'd also like some clearance between the shafts and the coupler, so if you could include a small `E` parameter for clearance, that would be great.

I am *not* looking for a clamp-style coupler - just a basic set-screw style.

Oh, and I'd prefer not to depend on external libraries if possible.

Thanks!

[Assistant]
simple-shaft-coupler.scad:
```
$fn=64*1;

E= 0.05*1;

// Height of the coupler (mm)
coupler_height = 30;

// Outer diameter of the coupler (mm)
coupler_dia = 20;

// Diameter of the first shaft being coupled (mm)
shaft1_dia = 5;

// Diameter of the second shaft being coupled (mm)
shaft2_dia = 8;

// Diameter of holes for set screws (mm). No threading is printed, so just set this to ~95% of the diameter of the screw being used, and it will bite into the plastic and tap as you go. 3.75mm worked well for #8 screws for me.
set_screw_dia = 3.75;

// lower is smaller for best printing
lower_shaft_dia = min(shaft1_dia,shaft2_dia);
upper_shaft_dia = max(shaft1_dia,shaft2_dia);

difference() {
    cylinder(d=coupler_dia,h=coupler_height);

    // lower bore
    translate([0,0,-E]) cylinder(d=lower_shaft_dia,h=coupler_height+2*E);

    // upper bore
    translate([0,0,coupler_height/2]) cylinder(d=upper_shaft_dia,h=coupler_height/2+E);

    for (z = [coupler_height*1/4, coupler_height*3/4]) translate([0,0,z]) {
        for (r = [0:90:360-1]) rotate([90,0,r]) {
            cylinder(d=set_screw_dia,h=coupler_dia/2+E);
        }
    }
}
```


[User]
I'd like to create a clock model in OpenSCAD, something a bit more involved than my first attempt. I need it to be parametric, so I can easily change things like size and style. I'm envisioning a design that allows for a customizable clock face with different marking styles (numbers, Roman numerals, tick marks, dots) and hands that accurately reflect the specified time.

Here’s what I’m thinking:

**Overall Structure:**

*   The clock should consist of a circular face, a raised frame around the edge, and clock hands for hours and minutes.
*   I'd like to use two tabs for customization – one for the clock's general appearance, and another for setting the time.

**Customization – "Clock" tab:**

*   `radius`:  A parameter to set the overall radius of the clock (e.g., 80 mm).
*   `thickness`: A parameter to control the thickness of the clock face and frame (e.g., 5 mm).
*  `frame_color`: a color selector for the frame.
*   `face_color`: a color selector for the face.
*   `marking_type`: A dropdown list with options for the hour markings: "Numbers", "Romans", "Ticks", and "Dots".
*   `marking_color`: A color selector for the markings.

**Customization – "Time" tab:**

*   `hour`: A numerical input for the hour (0 to 23).
*   `minute`: A numerical input for the minute (0 to 59).
* `hour_hand_color`: a color selector for the hour hand.
* `minute_hand_color`: a color selector for the minute hand.

**Detailed Design Features:**

*   **Face:** A simple circular disk, extruded to the specified `thickness`.
*   **Frame:** A raised circular frame, concentric with the face, also with a `thickness` parameter.
*   **Markings:** The hour markers should be evenly spaced around the clock face.
    *   Numbers: Extruded text objects.
    *   Roman numerals: Extruded text objects using I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII.
    *   Ticks: Simple rectangular bars.
    *   Dots: Spheres.
*   **Hands:**
    *   Hour hand: A polygon with a triangular shape, shorter than the minute hand.
    *   Minute hand: A polygon with a triangular shape, longer than the hour hand.
    *   The hands should rotate from the center of the clock, based on the provided `hour` and `minute` parameters. The hour hand should move at the proper rate, taking minutes into account.
   * The hands should be slightly above the surface of the face to avoid overlapping.

Could you generate the necessary OpenSCAD file(s) for this? I'm not looking to import any external libraries for this basic clock. Thanks!

[Assistant]
Clock.scad:
```

/* [Clock] */
// Outter Radius
radius=80;

// Frame and surface's thickness
thickness=5;

// How should the hour be read?
type_of_mark = "Romans"; // [Numbers, Romans, Ticks, Dots]

/* [Time] */
//
hour=3; // From 0 to 24 h
//
minutes=27; // From 0 to 60 min

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

clock();

module clock(){
    $fa=1;
    $fs=0.1;

    // Surface of the clock
	linear_extrude(height=thickness){
        circle(radius);
		}

    // Frame
    color("green")
    translate([0,0,thickness])
    linear_extrude(height=thickness){
        difference(){
        circle(radius);
        circle(radius-thickness);
        }
    }

    // Numbers, ticks...
    miR=radius-2.5*thickness;
    romans=["I","II","III","IV","V","VI","VII","VIII","IX","X","XI","XII"];
    color("red")
    for(i=[1:12])
    {
        if (type_of_mark=="Numbers"){
            linear_extrude(height=2*thickness){
                translate([miR*sin(30*i),miR*cos(30*i)])
                text(str(i),size=2*thickness,halign="center",valign="center");
            }
        }
        else if (type_of_mark=="Ticks"){
            rotate(30*i)
            translate([0,0,thickness])
            linear_extrude(height=thickness)
            polygon(points=[ [0.80*radius,-0.2*thickness],
                             [0.90*radius,-0.2*thickness],
                             [0.90*radius, 0.2*thickness],
                             [0.80*radius, 0.2*thickness]]);
        }
        else if (type_of_mark=="Dots"){
            rotate(30*i)
            translate([0.85*radius,0,thickness])
            sphere(0.5*thickness);
        }
        else if (type_of_mark=="Romans"){
            linear_extrude(height=2*thickness){
                translate([miR*sin(30*i),miR*cos(30*i)])
                text(romans[i-1],size=1.7*thickness,halign="center",valign="center");
            }
        }
    }

    // Define the time
    angH=hour*30+minutes*0.5;
    angM=minutes*6;
    color("DarkSlateGray")
    rotate(90-angM)
    translate([0,0,thickness])
    linear_extrude(height=0.8*thickness)
    polygon(points=[ [0,0],
                     [0.1*radius,-0.05*radius],
                     [0.75*radius,0],
                     [0.1*radius,0.05*radius]]);
    color("SlateGray")
    rotate(90-angH)
    translate([0,0,thickness])
    linear_extrude(height=0.8*thickness)
    polygon(points=[ [0,0],
                     [0.08*radius,-0.045*radius],
                     [0.50*radius,0],
                     [0.08*radius,0.045*radius]]);

}

```


[User]
I need a customizable coin holder for different US coins, and I'd like it to be printable. It should hold multiple coins stacked vertically. I need to be able to set the coin diameter, thickness, and quantity to hold. It should also have a way to be hung, like a small hole at the top. I'd also like a customizable aperture size, and the option to mount the hanger hole on the side rather than the top. Also, I would like to add a small logo/tag on the face with a customizable size.

Specifically, I'm working with US Quarter dimensions: 24.6mm diameter and 3.7mm thickness, but I'd like it to be parametric so I can change that later. I'm also using a 4mm hanging hole. I want the aperture to be a bit smaller than the coin diameter (say, coin diameter - 1mm). Also, let's start with a quantity of 4 coins. The logo should be around 10mm in size. I'd like to be able to set the aperture diameter independently from the coin diameter.

I'd like to use the `linear_extrude` function to create the tag. Also, I would like the tag to use a chevron/star/logo using `polygon` rather than importing an image, which I know how to do already.

I prefer that the final output is a single .scad file that I can easily change later. I think I'd also like to use BOSL or BOSL2 for this since that seems easiest for parametric designs with hull and other things I might want to add later, can you use BOSL2?

[Assistant]
MultiCoinHolder.scad:
```

CoinDiameter=24.6; // US Quarter Dollar
CoinThickness=3.7/2; // US Quarter Dollar
CoinQty=4;
HangerHoleDiameter=4;
ApertureDiameter=CoinDiameter-1;
SideMount=0;
LogoSize=10;
$fn=20;

CoinHeight=CoinThickness*CoinQty;

module CC_Tag(Size=10,Thickness=1, Center=true, DoBorder=true){
 linear_extrude(height=Thickness,center=Center)
 scale([2.54/90*Size/10, -2.54/90*Size/10, 1]) union() {
  polygon([[-0.006525,-53.156145],[-141.738804,17.709995],[-141.738804,88.576135],[-0.006525,17.709995],[141.725765,88.576135],[141.725765,17.709995]]); // Chevron
  polygon([[-0.006525,45.577248],[12.137625,82.011868],[50.541755,82.302728],[19.643125,105.111418],[31.234025,141.725798],[-0.006535,119.387728],[-31.247095,141.725798],[-19.656185,105.111418],[-50.554815,82.302728],[-12.150685,82.011868]]); //Bottom star
 polygon([[91.200672,-141.742850],[103.344822,-105.308230],[141.748952,-105.017370],[110.850322,-82.208680],[122.441222,-45.594300],[91.200662,-67.932370],[59.960102,-45.594300],[71.551012,-82.208680],[40.652382,-105.017370],[79.056512,-105.308230]]);
 polygon([[-91.078056,-141.883062],[-78.933906,-105.448442],[-40.529776,-105.157582],[-71.428406,-82.348892],[-59.837506,-45.734512],[-91.078066,-68.072582],[-122.318626,-45.734512],[-110.727716,-82.348892],[-141.626346,-105.157582],[-103.222216,-105.448442]]);
 if (DoBorder)
 difference(){
  polygon([[-177.171875,-177.171875],[-177.171875,177.171875],[177.171875,177.171875],[177.171875,-177.171875],[-177.171875,-177.171875]]);
  polygon([[-159.453125,-159.453125],[159.453125,-159.453125],[159.453125,159.453125],[-159.453125,159.453125],[-159.453125,-159.453125]]);
  }
 }
}

rotate([0,180,0])
difference(){
 union() {
  hull(){
   cylinder(r=(CoinDiameter/2)+2,h=CoinHeight+2,center=true);
   translate([0,CoinDiameter,1.5*(1-SideMount)]) rotate([0,90*SideMount,0]) cylinder(r=(HangerHoleDiameter/2)+1,h=CoinHeight-1,center=true);
  }
  translate([0,CoinDiameter,1*(1-SideMount)]) rotate([0,90*SideMount,0]) cylinder(r=(HangerHoleDiameter/2)+1,h=CoinHeight,center=true);
 }

 translate([0,0,0])
 union(){
  color("red") cylinder(r=ApertureDiameter/2,h=CoinHeight+10, center=true);
  color("red") translate([0,0,CoinHeight/2-0.5]) cylinder(r1=CoinDiameter/2,r2=ApertureDiameter/2,h=0.5);
  color("red") translate([0,0,-CoinHeight/2]) cylinder(r2=CoinDiameter/2,r1=ApertureDiameter/2,h=0.5);
  color("red") cylinder(r=CoinDiameter/2, h=CoinHeight-1, center=true);
 }
 color("red") translate([0,CoinDiameter,0]) rotate([0,90*SideMount,0]) cylinder(r=HangerHoleDiameter/2,h=CoinHeight+10,center=true);
 translate([0,-CoinDiameter/2-0.5,0])
 difference(){
  color("red") cube([4,3,CoinHeight+10],center=true);
  color("blue") translate([2,0,0]) cylinder(r=1.5,h=CoinHeight+11,center=true);
  color("blue") translate([-2,0,0]) cylinder(r=1.5,h=CoinHeight+11,center=true);
 }

translate([0,CoinDiameter/2+LogoSize/2,CoinHeight/2+1]) CC_Tag(Size=LogoSize,center=true,DoBorder=false);
}

```


[User]
Okay, I'm looking to design a new X-carriage for my Prusa i3 2020 that incorporates auto-leveling with a servo, an end stop, and cable tie management. I've got some ideas and some existing designs I’ve been referencing, but I need something parametric and flexible.

Essentially, I need a parametric OpenSCAD design that includes the following:

1.  **Base X-Carriage:** This should be based on a standard Prusa i3 X-carriage design (something like a remix from "Migbot I3 X-carriage with endstop" or "i3 X-Carriage for GT2 & T2.5 with added 30mm holes" would be great, but I need a clean start). I can provide an STL as a reference shape for the overall carriage, but I don't want it to be a hardcoded import.  I need to be able to adjust overall width, depth and height of the base. I'll need mounting holes, specifically 30mm apart for mounting to the existing linear rail blocks.
2. **Servo Mount:** I need an integrated mount for an SG90 servo, including the pass-through hole for the servo arm. I need to be able to adjust the servo mount location, how far the servo sticks out to the side of the carriage, and the angle at which the servo is mounted, if any. There needs to be mounting hardware support, including screw holes or standoffs, for the servo to mount securely.
3.  **End Stop Mount:** I want to integrate an end stop mount, using the existing endstop design I'm familiar with. I want to use the end stop that's discussed on Thingiverse here: http://www.thingiverse.com/thing:765805 .  I want to adjust the position of the end stop mount and the orientation. I need a way to specify the type of endstop I'm using (mechanical, optical, etc.) and also be able to adjust where the activation point is and provide a mounting method for various end stops.
4.  **Cable Tie Loops:** I need to have options for cable tie loops, and be able to choose between different cable tie orientations. I need to be able to adjust the number, size and position of the loops. Some loops should run front to back, and other could run side to side. I should be able to choose to enable/disable either.  I'd also like to specify a standard cable tie size, so I can adjust the loop size if needed to fit a different size.
5.  **Servo Arm:** The servo arm should also be a separate module that is parameterized so that I can easily change its length, the microswitch mounting point, and the shape of the arm itself.  I'd like to control the width and thickness of the arm, too, and I need mounting holes for the microswitch. I plan to use a microswitch that is approximately 20mm wide and 8.5mm tall, with mounting holes spaced approximately 6mm apart and located near the top and bottom edges.

I would like all components to be parameterized so I can adjust things like:

*   Wall thickness
*   Screw hole sizes (M2, M3, etc. ) and clearances
*   Overall dimensions of the carriage itself

I’d like the design to use the `sg90.scad`, `holes.scad`, and `fillet.scad` libraries. I don't have these libraries, and you will need to generate them yourself, as you will all of the other code.

Can you provide me with a set of OpenSCAD files that will allow me to create this parametric design?

[Assistant]
X-Carriage-Endstop-AutoLevel-CableTieHoops.scad:
```
include <sg90.scad>
include <holes.scad>

wall = 1.32;
e = 0.01; // added to prevent coplanar difference

function inch(i) = i * 25.4;

// Base block
block_w = inch(1.75);
block_d = inch(0.25);
block_h = inch(1.125);

module block_w_servo(servo_mount_o) {
  screw_block_d = 2.5;
  servo_inset_h = 1.5;

  difference() {
    union() {
      translate([servo_mount_o-servo_width/2-wall,0,0]) {
        // Servo support block
        difference() {
          union() {
            translate([-(servo_mount_o-servo_width/2-wall),0,0])
              mount_block();
            cube([servo_width+2*wall,servo_depth+2*servo_ear_depth,block_d]);
          }
          translate([wall,servo_ear_depth,block_d-servo_inset_h])
            cube([servo_width, servo_depth, servo_inset_h+e]);
        }
        // bottom block to screw the servo into
translate([wall,0,block_d]) difference() {
 translate([-1.3,0,0])
  cube([servo_width+2*wall,servo_ear_depth,screw_block_d],
    top=[0,screw_block_d,0,screw_block_d], $fn=4);
          translate([servo_width/2,servo_ear_depth/2,e ]) cylinder(r=1.8, h=screw_block_d);
        }

 // top block to screw the servo into
translate([0,servo_depth+servo_ear_depth,block_d]) difference() {
  cube([servo_width+2*wall,servo_ear_depth,screw_block_d],

  top=[0,screw_block_d,0,screw_block_d], $fn=4);

  translate([servo_width/2+wall,servo_ear_depth/2,e]) cylinder(r=1.8, h=screw_block_d);
        }
      }
    }

    // servo passthrough hole
    translate([servo_mount_o,servo_ear_depth+servo_depth-servo_big_tip_r,-e]) {
      cylinder_poly(h=block_d+2*e, r=servo_big_tip_r);
      translate([0,-servo_big_tip_r,0]) cylinder_poly(h=block_d+2*e, r=2.8);
    }
  }
}

//Carriage and Modifications

difference () {
import("x-carriage_with_end_stop.stl");
     translate([35,-6,0]) cube([12,18,9]);
}

difference () {
    translate([9.5,34,0]) cube([7,5,12]);
    translate([3,34,3]) cube([14,2.5,6]);
}

difference () {
    translate([-17.5,34,0]) cube([7,5,12]);
    translate([-24.5,34,3]) cube([14,2.5,6]);
}

translate([16,-40.5,0]) rotate([0,0,90]){
    difference ()
    {
    block_w_servo(-0);
    translate([0,servo_ear_depth/2,-e ]) cylinder(r=1.8, h=12);
     translate([0,30,-e]) cylinder(r=1.8, h=12);
    }
}

```
x-carriage_cableties_v1.scad:
```
difference () {
import("C:/x-carriage_with_end_stop.stl");
     translate([35,-6,0]) cube([12,18,9]);
}

difference () {
    translate([9.5,34,0]) cube([7,5,12]);
    translate([3,34,3]) cube([14,3,6]);
}

difference () {
    translate([-17.5,34,0]) cube([7,5,12]);
    translate([-24.5,34,3]) cube([14,3,6]);
}

```
x-carriage_cableties_v2.scad:
```
difference () {
import("C:/x-carriage_with_end_stop.stl");
     translate([35,-6,0]) cube([12,18,9]);
}
//Wire tie Thickness and Width
wt_t = 2.25;
wt_w = 4;
//Wire tie width 3.75

difference () {
    translate([7,34,0]) cube([12.5,4,9]);
    translate([11.5,34,0]) cube([wt_w,wt_t,9]);
}

difference () {
    translate([-19.5,34,0]) cube([12.5,4,9]);
    translate([-15,34,0]) cube([wt_w,wt_t,9]);
}

```
servo_arm_small_microswitch_31mm.scad:
```
include <sg90.scad>
include <fillet.scad>
include <holes.scad>

wall = 1.32;
e = 0.01; // added to prevent coplanar difference

function inch(i) = i * 25.4;

// Base block
block_w = inch(1.75);
block_d = inch(0.25);
block_h = inch(1.125);

module switch_arm(h) {
  arm_w = 17; // arm radius
  arm_d = 3.8;  // arm center circle radius
  arm_h = 3.7; //3.5 // arm total depth
  arm_inset_h = 1.7;

  switch_h = 8.5;
  switch_w = 20;
  switch_d = arm_h;

  // Required area is that which holds the servo arm
  required_h = arm_d + arm_w + 2*wall;
  difference() {
    // stick bit
    cube_fillet([2*(arm_d+wall),h-switch_h,arm_h], vertical=[0,0,arm_d,arm_d], $fn=24);
    // servo arm inset
    translate([arm_d+wall,arm_d+wall,-e]) {
      cylinder_poly(r=arm_d, h=arm_h+2*e);
      translate([0,0,arm_inset_h+e])
        linear_extrude(arm_h-arm_inset_h+e)
          polygon(points=[[-arm_d*0.90,0], [-arm_d*0.5,arm_w+0.01], [arm_d*0.5, arm_w+0.01], [arm_d*0.90, 0]]);
    }
  } // difference

  // Holder of the microswitch
  color("orange")
  translate([0,h-switch_h,0]) {
    difference() {
      cube([13,switch_h,switch_d]);

      // Holder screwholes
      translate([switch_w-11,switch_h/1.6,-e])
        cylinder_poly(r=M2p5_clear/2, h=switch_d+2*e);
      translate([switch_w-17,switch_h/1.6,-e])
        cylinder_poly(r=M2p5_clear/2, h=switch_d+2*e);
    } // diff
  } // translate+rotate
}

translate([-25,0,0])
    switch_arm(31);

```


[User]
Okay, I'd like a parametric OpenSCAD design for a Halloween pumpkin wearing a witch's hat.

The pumpkin should be a hollowed-out, fairly classic-looking pumpkin shape, you know, with those rounded lobes. It needs a carved face with two eyes, a mouth, and maybe a tooth, which I would like to be able to turn off. I’d like to choose between circular or square eyes.

The witch hat should be scaled to fit on top of the pumpkin like in the provided code. It should have a characteristic bend near the tip, as well as a brim. I'd like the hat to be separate from the pumpkin so that I can print it separately, but also be able to generate a model with them combined. I want to be able to select to only print the hat by itself, or only a portion of the hat.

I'd also love to have an option to add a little mini-pumpkin ornament attached to the hat, like the example that was included.

Finally, I need options to pick between just the pumpkin, just the hat, both parts of the hat (which can be printed separately), a combined model, and a hat that is oriented correctly for printing by itself.

Could you make it so I can set these parameters:

*   `models`: A way to choose which models to print (complete, both parts of the hat, half of the hat, the other half of the hat, just the pumpkin, just the hat standing upright, or all the model options).
*   `eyes`: A way to choose between square and circular eyes.
*   `tooth`: A way to choose if the tooth is included in the mouth.

I do not need you to generate any libraries, but if it makes your life easier, feel free to use the BOSL2 library.

[Assistant]
TW-HalloweenPumpkin6.scad:
```
//Thomas Wolfe
//Pumpkin and Witch hat

$fn = 30;
//you can chose which models to print
models = 1;//[1:complete, 2:Both parts of hat, 3:half of the hat, 4:other half of the hat, 5:Just Pumpkin, 6:upright hat, 7:all models possible]

//you can change the type of eyes
eyes = 1;//[1:Square, 2:Circle]

//you can choose to remove the tooth
tooth = 1;//[1:Yes, 2:No]

/*
complete();
print1();//hat 1/2
print2();//hat 2/2
print3();//base of pumkin
//print4();//mini hat topper
 */

module print1() {//hat pt1
    difference(){
        rotate([-90,0,0]){
            translate([75,0,0]){
                scale([.6,.7,.8]){
                        hat();
                        }
                    }
                }
         translate([0,-100,-100]){
                cube([1000,1000,100]);
             }
            }
        }
module print2() {//hat pt2
    translate([-150,0,0]){
        rotate([180,0,0]){
            intersection(){
                rotate([-90,0,0]){
                    translate([75,0,0]){
                        scale([.6,.7,.8]){
                            hat();
                        }
                    }
                }
                translate([0,-100,-100]){
                    cube([1000,1000,100]);
                }
            }
        }
    }

}
module print3() {
    translate([0,-100,0])
    finalpumpkin();
}
module print4(){
    translate([0,100,0]){
        rotate([90,0,0]){
            translate([0,18,0]){
                scale([1,5,1]){
                    minipumpkin();
                }
            }
        }
    }
}
module complete() {
    union(){//this is where the parts of the pumpkin are called
        color("black", 1){ //calls and sets the hat to  black and makes it fit the hight spec
            translate([0,0,49]){
                scale([.6,.7,.8]){
                    hat();
                }
            }
        }
        color("darkorange"){//makes the ornament pumpkin darker
            minipumpkin();//calls the ornimant to the hat
        }
        finalpumpkin();//calls the "carved" pumpkin
    }
}

module pumpkin() {//this calls the lobes and makes the pumpkin
        union(){//this is what makes the pumpkin
            color( "orange", 1) {
                translate([7,0,25]){
                    lobe();
                }
                translate([0,7,25]){
                    lobe();
                }
                translate([0,-7,25]){
                    lobe();
                }
                translate([-7,0,25]){
                    lobe();
                }
                translate([5,5,25]){
                    lobe();
                }
                translate([5,-5,25]){
                    lobe();
                }
                translate([-5,-5,25]){
                    lobe();
                }
                translate([-5,5,25]){
                    lobe();
                }
            }
        }
}

module lowstem(){//small bottem of pumpken that is a gray brown ish color like on real pumpkins
    color( "sandybrown", 1) {
             intersection(){
                 translate([-25,-25,0]){
                    cube([50,50,20]);
                     }
                 translate([0,0,26]){
                 scale([1.5,1.5,1]){
                        lobe();
                    }
                }
            }
        }
}
module lobe() {//part of the elipses-spheres that make up the pumpkin
        scale([.4,.4,1]){
            sphere(25);
        }
}
module hat(){//this is the witches hat that the pumpkin wears
    union(){
        hull(){
            cylinder(40,10,9);
            cylinder(1,25,25);
        }
        hull(){//bend in hat tip
            translate([10,0,51]){
                sphere(5);
            }
            translate([0,0,35]){
                rotate([0,30,0]){
                    cylinder(20,10,5);
                }
            }
        }
        hull(){//end of hat tip
            translate([10,0,50]){
                rotate([0,130,0]){
                    cylinder(20,5,0);
                }
            }
            translate([10,0,51]){
                sphere(5);
            }
        }
        hull(){//base to hat
            translate([10,0,0]){
                cylinder(5,50,45);
            }
            translate([-10,0,0]){
                cylinder(5,50,45);
            }
        }
    }
}
module minipumpkin() {//this is the small ornimant that goes on the hat
    //rotate([0,0,-30]){
        translate([0,-18,55]){
            scale([.25,0.05,.15]){
                scale([1,1,1]){
                    //for(d = [0:0.05:1]){
                    //    translate([0,d,0])
                    pumpkin();
                    //}
                    //pumpkin();
                }
            }
        }
    //}

}
module insideofpumpkin() {//smaller version of the pumpkin used to make it hollow
    translate([0,0,3]){
        scale([1.65,1.65,.90]){
            pumpkin();
        }
    }
}
module eye() {
    if(eyes == 1){
        translate([0,-100,30]){
        cube([8,200,8],center=true);
        }
    }
    if(eyes == 2){
        translate([0,0,30])
        rotate([90,0,0])
        cylinder(200,7,7);
        }
}

module mouth(){//creates a mouth with one tooth
    if(tooth == 1){
    intersection() {//takes the bottem half of the cylinder(minus the tooth)
        union(){
            translate([0,0,30]){
                rotate([90,0,0]) {
                    cylinder(100,20,20);
                }
            }
        }
        union(){
           difference() {
              translate([-100,-100,0]){
                cube([200,100,20]);
              }
              translate([0,-100,10]){
                cube([5,100,5]);
              }
           }
        }
     }
 }
 if(tooth ==2){
        intersection() {//takes the bottem half of the cylinder(minus the tooth)
        union(){
            translate([0,0,30]){
                rotate([90,0,0]) {
                    cylinder(100,20,20);
                }
            }
        }
        union(){
            translate([-100,-100,0]){
                cube([200,100,20]);
              }
          }
      }
 }

}
module finalpumpkin() {//this is the pumpkin with the face and is hollowed out
    difference() {
        scale([1.75,1.75,1]){//scales the pumpkin and the lower stem part to then cut the other part from it to make the "carved" pumpkin
            pumpkin();
            lowstem();
        }
        translate([-11,0,0]){//sets the eye 11 to the left of origin
            eye();//moves eye into position(to be cut)
        }
        translate([11,0,0]){//sets eye 11 to the right of the origin
            eye();//moves other eye (to be cut)
        }
        mouth();//calls mouth to be cut out

        insideofpumpkin();  //makes it hollow
    }

}

Models = 1;//[1:completed, 2:Both parts of hat, 3:half of the hat, 4:other half of the hat, 5:Just Pumpkin, 6:upright hat]
if(models == 1){
    complete();
}

if(models == 2){
    print1();//hat 1/2
    print2();//hat 2/2
}
if(models == 3){
    print1();//hat 1/2
}

if(models == 4){
    print2();//hat 2/2
}

if(models == 5){
    print3();//base of pumkin
}

if(models == 6){
    translate([0,0,49]){
                scale([.6,.7,.8]){
                    hat();
                }
            }
}

if(models == 7){
    complete();
    print1();//hat 1/2
    print2();//hat 2/2
    print3();//base of pumkin
}

```


[User]
Hey, I need help designing an adapter for connecting two different sized air ducts. I have a simple version in mind, but I want it to be parametric so I can easily change the dimensions later.

Basically, it's a tube that transitions from a larger diameter to a smaller diameter. Here's a breakdown of what I need:

*   **Two Diameters:** I need to specify both the larger and smaller outside diameters.
*   **Sleeve Lengths:** There should be a straight sleeve section on both the large and small diameter ends. I need to specify the length of each of these.
*   **Slope Length:** The transition between the two diameters should be a conical section. I need to specify the length of this sloped part.
*   **Wall Thickness:** The adapter needs to have a consistent wall thickness throughout.
*   **General Tolerance:** I'd like to include a general tolerance, so I can adjust how tightly the adapter fits the ducts.

So, in summary, I need an OpenSCAD file (or files if it makes sense) that will generate the adapter given the above parameters. I want to use the `difference()` and `intersection()` functions to construct the shape. It would be great if it's easy to customize these parameters, and I'd like to keep the general tolerance a separate variable. I'm not interested in any screw holes or anything fancy, just a simple adapter with a constant wall.

[Assistant]
conv_tube.scad:
```
//
// tube diameter conversion
//
// design by Egil Kvaleberg, 30 Oct 2015
//
//

major_diameter = 95.9; // larger diameter
minor_diameter = 59.7; // smaller diameter
sleeve_length = 35.0;
slope_length = 50.0;
wall = 2.0; // general wall thickness
wire_diameter = 7.0; // diameter of wire

/* [Hidden] */
tol = 0.25; // general tolerance
d = 0.01;

intersection () {
    difference() {
        union () {
            cylinder(r=major_diameter/2 + tol + wall, h=sleeve_length+d, $fn=120);
            translate([0, 0, sleeve_length]) cylinder(r1=major_diameter/2 + tol + wall, r2=minor_diameter/2 + tol + wall, h=slope_length, $fn=120);
            translate([0, 0, sleeve_length+slope_length-d]) cylinder(r=minor_diameter/2 + tol + wall, h=sleeve_length+d, $fn=120);
        }
        union () { // subtract
            translate([0, 0, -d]) cylinder(r=major_diameter/2 + tol, h=sleeve_length + 3*d, $fn=120);
            translate([0, 0, sleeve_length-d]) cylinder(r1=major_diameter/2 + tol, r2=minor_diameter/2 + tol, h=slope_length+2*d, $fn=120);
            translate([0, 0, sleeve_length+slope_length-2*d]) cylinder(r1=minor_diameter/2 + tol, r2=minor_diameter/2 + tol - wall, h=wall+3*d, $fn=120);
            translate([0, 0, sleeve_length+slope_length+wall]) cylinder(r=minor_diameter/2 + tol, h=sleeve_length-wall+d, $fn=120);
        }
    }
	//cube([100, 100, 100]);
}
```


[User]
I'd like to design a parametric jack-o-lantern for 3D printing. I've got some specific ideas for how it should look and some customization I'd like to include.

First, the base of the jack-o-lantern should be a pumpkin shape, made by layering slightly scaled and rotated spheres, similar to how it's done in the example file I've attached (MT-Halloween-Jack-O-Lantern.scad). Then, I need a stem on top. The stem should be constructed from rotated cubes, with the top cut off to give it a more realistic shape.

For the face, I want to include eyes, a nose, and a mouth. The eyes should be a triangle shape made from the difference of two cubes, and scaled to be elongated. The nose should be the same triangle shape, but smaller and rotated. The mouth should be a curved slit, created from the difference of two cylinders, with blocky teeth. The teeth should have supports if a parameter is turned on so it will be printable.

I would like to include a few parameters:

*   `Supports`: A boolean to turn supports on or off for the teeth (default off).
*   `Face`: A boolean to turn the jack-o-lantern face on or off, for a regular pumpkin (default on).
*   `Render_Quality`: A number controlling the `$fn` variable for the spheres and cylinders (default 50).

Finally, the whole thing should be rotated on the z-axis by 220 degrees before it's combined.  Also, the bottom of the pumpkin should be cut flat, and the inside should be hollowed out, with the shell being a variable thickness. The thickness should be applied to the interior of the pumpkin to leave the exterior size consistent.

I'm not particularly attached to the specific dimensions used in the example, so feel free to adjust them as needed for good printability and a satisfying shape. No specific libraries are needed, I think it should be doable with just core OpenSCAD functions.

[Assistant]
MT-Halloween-Jack-O-Lantern.scad:
```
//Morgan Thatcher
//Jack the Pumpkin

//Add supports to the teeth to make it printable
Supports = 0; //[1:On, 0:Off]

//Add a face
Face = 1; //[1:Yes, 0:No]

Render_Quality=50; // [30:100]

//END CUSTOMIZER

$fn=Render_Quality;
module pumpkin() {
    //pumpkin base
    for ( z = [0, 30, 60, 90, 120, 150]) {
        rotate( [0, 0, z] ) {
            scale([1,1.5,1.15]) {
                sphere(r=50);
            }
        }
    }
    //stem
    module stem() {
        for (m=[45, 60, 80, 100, 120]) {
            rotate([0,0,m]) {
                cube([30,30,70], center=true);
            }
        }
    }
    //uses a cube to cut off the top of the stem
    difference() {
        translate([0,0,55]) {
            rotate([0,-8,0]) {
                scale([.5,.5,.5]) {
                    stem();
                }
            }
        }
        translate([-20,-20,70]) {
            cube([40,40,40]);
        }
    }
}
module eye() {
    rotate([0,45,0]) {
        scale([5,20,5]){
            difference() {
                //difference of two cubes to create triangle
                cube(5,5,5);
                translate([0,-1,0]) {
                    rotate([0,45,0]) {
                        cube(10,10,10);
                    }
                }
            }
        }
    }
}
module mouth() {
    difference() {
        //difference of 2 cylinders to create mouth
        rotate([90,0,0]) {
            cylinder(r=25, h=50);
        }
        translate([0,2,17.5]) {
            rotate([90,0,0]) {
                cylinder(r=30, h=60);
            }
        }
        //bottom tooth
        translate([0,0,-23]) {
            cube([10,120,10], center=true);
        }
        //top left tooth
        translate([-12,0,-10]) {
            cube([10,120,10], center=true);
        }
        //top right tooth
        translate([12,0,-10]) {
            cube([10,120,12], center=true);
        }
        if (Supports==1) {
            //left side left tooth support
            translate([-16.5, 0, -15]) {
                cube([1,120,10], center=true);
            }
            //right side left tooth support
            translate([-7.5, 0, -15]) {
                cube([1,120,20], center=true);
            }
            //left side right tooth support
            translate([7.5,0,-15]) {
                cube([1,120,20], center=true);
            }
            //right side right tooth support
            translate([16.5,0,-18]) {
                cube([1,120,10], center=true);
            }
        }
        //cuts off top of smile
        translate([0,0,8]) {
            cube([50,120,20], center=true);
        }
    }
}
rotate([0,0,220]) {
    difference() {
        //pumpkin
        pumpkin();
        if (Face==1) {
            //left eye
            translate([10,0,20]){
                eye();
            }
            //right eye
            translate([-45,0,20]){
                eye();
            }
            //mouth
            translate([0,80,8]) {
                    mouth();
            }
            //nose
            translate([8,20,15]) {
                rotate([0,180,0]) {
                    scale([.5,1,.7]) {
                        eye();
                    }
                }
            }
            //hollow out inside
            scale([1,1,.8]) {
                sphere(r=65);
            }
        }
            //cut off bottom
            translate([0,0,-100]) {
                cube([100,100,100], center=true);
            }
    }
}

```


[User]
Hey there! I'm looking to design a customizable stand for conical centrifuge tubes, and I'd like to use OpenSCAD to make it parametric. I've got a basic idea, but I need some help fleshing out the code.

Essentially, I need a stand that can hold a standard conical centrifuge tube upright. The stand should have a hexagonal base for stability and a cylindrical holder that fits the tube snugly. I'm thinking the holder will have a cylindrical section, possibly with a chamfered section where it meets the base.  It would be nice to have the option of a small window on the side of the cylinder for visibility.

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

*   `tube_diameter`: The diameter of the centrifuge tube (I'll probably add 0.5mm or so to the actual measurement for a looser fit).
*   `tube_height`: How far the tube will sit inside the holder, which should be at least as long as the conical part of the tube.
*   `wall_thickness`:  The thickness of the walls of the holder (no less than 1mm, I think).
*   `base_diameter`: The diameter of the hexagonal base (needs to be at least 1.5 times the tube diameter for stability).
*   `base_height`: The height of the hexagonal base.
*   `chamfer_height`: The height of the chamfered part that connects the holder to the base; I'd like to be able to set this to 0 to have no chamfer.
* `cone_tip`: The diameter of the tip of the tube's cone, used to create a cut out in the base.
*   `window_size`: The width of a window cut out on the side of the holder. I want to be able to set this to 0 for no window.

I'm not too worried about fancy features, mostly just a solid, functional stand.  I'm not using any libraries, just straight OpenSCAD code. Could you help me generate the OpenSCAD file for this? Thanks a bunch!

[Assistant]
Customizable_conical_tube_stand.scad:
```
/*[Global]*/

//diameter of centrifuge tube (add .5 mm for better fit)
tube_diameter = 28.5;

//how far the tube will fit into the holder (should be longer than the cone at the bottom)
tube_height = 25;

//thickness of the walls (dont go under 1mm)
wall_thickness = 1.5;

//diameter of base hexagon (at least 1.5x tube_diameter)
base_diameter = 65;

//height of base hexagon
base_height = 3;

//height of the chamfered part that interconnects the tube holder with the base plate (set 0 for no chamfer)
chamfer_height = 10;

//diameter of the centrifuge tube at the conical tip
cone_tip = 8;

// width of the window at the side (set 0 for no window)
window_size = 2;

/*[Hidden]*/
union(){
    difference(){
        difference(){
            cylinder (h =tube_height + chamfer_height + base_height, r = tube_diameter/2 + wall_thickness);
            cylinder (h =tube_height + chamfer_height + base_height, r = tube_diameter/2);
        };
        translate([0, tube_diameter/2 + wall_thickness/2, chamfer_height + base_height + tube_height/2]){
            cube(size = [window_size, wall_thickness + 1, tube_height-4], center = true);
        };
    };
    difference(){
        hull(){
            hex(base_diameter, base_height);
            translate([0,0,chamfer_height-1]){
                cylinder(h=1, r = tube_diameter/2 + wall_thickness);
            };
        };
        translate([0,0,-base_height/2]){
            cylinder(h = base_height + chamfer_height, r = cone_tip/2);
        };
    };
};

module hex(size,tube_height) {
  boxWidth = size/1.75;
  translate([0,0,height/2]){
    for (r = [-60, 0, 60]) rotate([0,0,r]) cube([boxWidth, size,tube_height], true);
  };
  };
```