[User]
I'm looking to design a modular storage system, kind of like the one described in the ClickBox.scad file I've been looking at. I need to be able to easily create different configurations using a few basic building blocks: shelves, drawers, and connectors, all with a plug-and-play kind of connection.

Ideally, the design should be parametric so I can customize the dimensions. I need parameters for:

*   **Drawer/Box Dimensions:**  Width, Length, and Height of the main box/drawer itself.
*   **Wall Thickness:** Thickness of the drawer/shelf walls.
*   **Shelf Height:**  The height of a shelf element.
*   **Plug Width:** The width of the plugs used for joining the components.
*  **Plug Wall Thickness:** The wall thickness of the plug.
*   **Ledge Width**: The width of the shelf ledge, if there is one.
*  **Corner Radius:** The radius of the rounded corners of the drawer front panel.
*   **Adjustment:** A small adjustment value, likely to provide some clearance for easier fitting of parts.
*   **Difference Correction:** An adjustment to account for differences when using boolean operations in OpenSCAD (like `difference()`).

The modules I'd like to generate are:

1.  **Drawers:**  I want several drawer types (1, 2, or 4 sides) that I can pick between. The front panel should have rounded corners, and there should be an option to include a handle. The drawers should also have a small ledge at the back to prevent them from sliding out too easily.
2.  **Shelves:**  Simple flat shelves with an option for a bottom or no bottom. The shelves should have vertical sides and a connecting plug/joint.
3.  **Connectors:** Vertical connectors that join the different elements together. These should allow for stacking of shelves and drawers.
4. **Walls:** Walls can be left or right for the sides.

I would like to be able to adjust the number of each element I want to generate, though for drawers it should be limited to generating one instance only.

I am hoping to print these without supports. The current design uses a kind of "horizontal plug" that is printed upside down so it can slide along ledges of the connectors.

Can you generate OpenSCAD files for these elements using the parameters I specified? This should all be in one or more .scad files but I don't want to use any libraries in this project. I want each part to be fully defined within those files.

[Assistant]
ClickBox.scad:
```
$fn=30;

// Element to be generated
Element="Right Wall";
// [Example, Drawer1, Drawer2, Drawer4, Shelf, Shelf with Bottom, Connect, Left Wall, Right Wall]

// Nuber of Elements, when Element=Set or Drawer1,2,4 the Number of generated elements is limited to 1
Number=1; // [1:1:8]

// Width of the drawer, Width of Box = drawer_x + 2*plug_w
drawer_x=100; // [50:1:160]

// Length of the drawer
drawer_y=100; // [50:1:160]

// Height of the drawer, Minimum 4xplug_w
drawer_z=50; // [16:1:160]

// Thickness of the drawer walls
drawer_t=0.8; // [0.4:0.1:2]

// Height of the shelf
shelf_z=10; // [8:0.5:20]

// Width of the plugs
plug_w=8; // [5:0.5:10]

// Plug wall thickness
plug_t=1.2; // [0.1:0.05:1]

// Width of ledge
shelf_ledge=5; // [4:0.5:10]

// Radius of the corners on the front panel of a drawer
cornerradius=3; // [0.5:0.5:6]

// Drawers adjustment for easy fitting
adjustment=0.5; // [0.1:0.05:1]

// Adjustment value for correction when using differences in OpenSCAD
diffcorr=0.2; // [0.1:0.05:1]

// Drawing the selected Element
for (i=[0:Number-1]) {
  if (Element=="Example")      {example();}
  else if (Element=="Drawer1") {drawer(1);}
  else if (Element=="Drawer2") {drawer(2);}
  else if (Element=="Drawer4") {drawer(4);}
  else if (Element=="Shelf")   {shelf();}
  else if (Element=="Shelf with Bottom")   {shelf(true);}
  else if (Element=="Connect") {connect();}
  else if (Element=="Left Wall")    {wall("left");}
  else if (Element=="Right Wall")    {wall("right");}
}

module example() {
  shelf();
  translate([0,0,drawer_z+drawer_t])rotate([0,0,0])shelf();

  height=drawer_z+drawer_t+2*plug_w;

  translate([+1*(drawer_x/2+drawer_t+plug_w/2),-1*(drawer_y/2-plug_w/2-drawer_t),height/2])rotate([-90,0,0])connect();
  translate([-1*(drawer_x/2+drawer_t+plug_w/2),-1*(drawer_y/2-plug_w/2-drawer_t),height/2])rotate([-90,0,0])connect();
  translate([+1*(drawer_x/2+drawer_t+plug_w/2),+1*(drawer_y/2-plug_w/2-drawer_t),height/2])rotate([90,0,0])connect();
  translate([-1*(drawer_x/2+drawer_t+plug_w/2),+1*(drawer_y/2-plug_w/2-drawer_t),height/2])rotate([90,0,0])connect();

  translate([-drawer_x-plug_w-2*drawer_t,0,height/2])rotate([0,180,0])wall("Left");
  translate([-drawer_t,-30,drawer_t*7/4])drawer(1);
}

module wall(side="right") {
  height=drawer_z+drawer_t-2*plug_w;
  hull() {
    translate([-1*(drawer_x/2+drawer_t/2),-drawer_y/2+plug_w/2,-plug_w/2-diffcorr-height/2])rotate([0,90,0])cylinder(d=plug_w,h=drawer_t,center=true);
    translate([-1*(drawer_x/2+drawer_t/2),-drawer_y/2+plug_w/2,+plug_w/2+diffcorr+height/2])rotate([0,90,0])cylinder(d=plug_w,h=drawer_t,center=true);
    translate([-1*(drawer_x/2+drawer_t/2),+drawer_y/2-plug_w/2,-plug_w/2-diffcorr-height/2])rotate([0,90,0])cylinder(d=plug_w,h=drawer_t,center=true);
    translate([-1*(drawer_x/2+drawer_t/2),+drawer_y/2-plug_w/2,+plug_w/2+diffcorr+height/2])rotate([0,90,0])cylinder(d=plug_w,h=drawer_t,center=true);
  }
  if (side=="right") {
    translate([-1*(drawer_x/2+plug_w/2+drawer_t),+1*(drawer_y/2-plug_w/4-drawer_t-diffcorr),+height/2+plug_w/2])joint(depth=plug_w/2);
    translate([-1*(drawer_x/2+plug_w/2+drawer_t),-1*(drawer_y/2-plug_w/4-drawer_t-diffcorr),+height/2+plug_w/2])joint(depth=plug_w/2);
    translate([-1*(drawer_x/2+plug_w/2+drawer_t),+1*(drawer_y/2-plug_w/4-drawer_t-diffcorr),-height/2-plug_w/2])joint(depth=plug_w/2);
    translate([-1*(drawer_x/2+plug_w/2+drawer_t),-1*(drawer_y/2-plug_w/4-drawer_t-diffcorr),-height/2-plug_w/2])joint(depth=plug_w/2);
  }
  else {
    translate([-1*(drawer_x/2+plug_w/2+drawer_t),+1*(drawer_y/2-plug_w*3/4-drawer_t-diffcorr),+height/2+plug_w/2])joint(depth=plug_w/2);
    translate([-1*(drawer_x/2+plug_w/2+drawer_t),-1*(drawer_y/2-plug_w*3/4-drawer_t-diffcorr),+height/2+plug_w/2])joint(depth=plug_w/2);
    translate([-1*(drawer_x/2+plug_w/2+drawer_t),+1*(drawer_y/2-plug_w*3/4-drawer_t-diffcorr),-height/2-plug_w/2])joint(depth=plug_w/2);
    translate([-1*(drawer_x/2+plug_w/2+drawer_t),-1*(drawer_y/2-plug_w*3/4-drawer_t-diffcorr),-height/2-plug_w/2])joint(depth=plug_w/2);
  }
}

module shelf(bottom=false) {
  union() {
    difference() {
      translate([0,0,drawer_t/2]) cube([drawer_x,drawer_y,drawer_t], center=true);
      if (bottom==false) {
        translate([0,0,drawer_t/2]) cube([drawer_x-2*shelf_ledge,drawer_y-2*shelf_ledge,drawer_t+1], center=true);
      }
    }
    translate([-drawer_x/2-drawer_t/2,0,shelf_z/2]) cube([drawer_t,drawer_y,shelf_z], center=true);
    translate([+drawer_x/2+drawer_t/2,0,shelf_z/2]) cube([drawer_t,drawer_y,shelf_z], center=true);

    translate([0,drawer_y/2-drawer_t/2,shelf_z/2]) cube([drawer_x+2*drawer_t,drawer_t,shelf_z], center=true);

    translate([+1*(drawer_x/2+plug_w/2+drawer_t),-1*(drawer_y/2-plug_w/4-plug_w/2-diffcorr-drawer_t-diffcorr),plug_w/2])joint(depth=plug_w/2);
    translate([+1*(drawer_x/2+plug_w/2+drawer_t),+1*(drawer_y/2-plug_w/4-plug_w/2-diffcorr-drawer_t-diffcorr),plug_w/2])joint(depth=plug_w/2);
    translate([-1*(drawer_x/2+plug_w/2+drawer_t),+1*(drawer_y/2-plug_w/4-drawer_t-diffcorr),plug_w/2])joint(depth=plug_w/2);
    translate([-1*(drawer_x/2+plug_w/2+drawer_t),-1*(drawer_y/2-plug_w/4-drawer_t-diffcorr),plug_w/2])joint(depth=plug_w/2);

    if (bottom==false) {
      translate([+1*(drawer_x/2+plug_w/2+drawer_t),-1*(drawer_y/2-plug_w/4-plug_w/2-diffcorr-drawer_t-diffcorr),plug_w*3/2])joint(depth=plug_w/2);
      translate([+1*(drawer_x/2+plug_w/2+drawer_t),+1*(drawer_y/2-plug_w/4-plug_w/2-diffcorr-drawer_t-diffcorr),plug_w*3/2])joint(depth=plug_w/2);
      translate([-1*(drawer_x/2+plug_w/2+drawer_t),+1*(drawer_y/2-plug_w/4-drawer_t-diffcorr),plug_w*3/2])joint(depth=plug_w/2);
      translate([-1*(drawer_x/2+plug_w/2+drawer_t),-1*(drawer_y/2-plug_w/4-drawer_t-diffcorr),plug_w*3/2])joint(depth=plug_w/2);

      translate([-1*(drawer_x/2+drawer_t/2),-1*(drawer_y/2-plug_w*3/4-diffcorr),shelf_z]) rotate([0,90,0])cylinder(d=plug_w*2/3,h=drawer_t, center=true);
      translate([+1*(drawer_x/2+drawer_t/2),-1*(drawer_y/2-plug_w*3/4-diffcorr),shelf_z]) rotate([0,90,0])cylinder(d=plug_w*2/3,h=drawer_t, center=true);
    }
    else{
      translate([0,-drawer_y/2+drawer_t/2,shelf_z/2]) cube([drawer_x+2*drawer_t,drawer_t,shelf_z], center=true);
    }
  }
}

module joint(depth=plug_w) {
  difference() {
    cube([plug_w,depth,plug_w],center=true);
    rotate([90,0,0])cylinder(d=plug_w*2/3,h=depth+diffcorr,center=true);
  }
}

module connect(height=plug_w) {
  height=drawer_z+drawer_t-2*plug_w;
  hull() {
    translate([0,-plug_w/2-diffcorr-height/2,-plug_w/2-drawer_t/2])cylinder(d=plug_w,h=drawer_t,center=true);
    translate([0,+plug_w/2+diffcorr+height/2,-plug_w/2-drawer_t/2])cylinder(d=plug_w,h=drawer_t,center=true);
  }

  translate([0,0,-plug_w/4])cube([plug_w/3,height-diffcorr-plug_w,plug_w/2],center=true);

  translate([0,-height/2+diffcorr/2+plug_w/6,diffcorr/2])cube([plug_w,plug_w/3,plug_w+diffcorr],center=true);
  translate([0,+1*(-height/2+diffcorr/2+plug_w/12),plug_w*2/3+diffcorr]) {
    difference() {
      translate([0,0,plug_w/4])prism(plug_w,plug_w/2,plug_w/2);
      translate([0,0,plug_w*4/8])cube([plug_w+diffcorr,plug_w/2+diffcorr,plug_w/2],center=true);

    }
    rotate([0,180,0])translate([0,0,plug_w/4])prism(plug_w,plug_w/2,plug_w/2);
  }

  translate([0,-1*(-height/2+diffcorr/2+plug_w/6),diffcorr/2])cube([plug_w,plug_w/3,plug_w+diffcorr],center=true);
  translate([0,-1*(-height/2+diffcorr/2+plug_w/12),plug_w*2/3+diffcorr])rotate([0,0,180]) {
    difference() {
      translate([0,0,plug_w/4])prism(plug_w,plug_w/2,plug_w/2);
      translate([0,0,plug_w*4/8])cube([plug_w+diffcorr,plug_w/2+diffcorr,plug_w/2],center=true);

    }
    rotate([0,180,0])translate([0,0,plug_w/4])prism(plug_w,plug_w/2,plug_w/2);
  }

  translate([0,-plug_w/2-diffcorr/2-height/2,0])cylinder(d=plug_w*2/3-2*diffcorr,h=plug_w,center=true);
  translate([0,-plug_w/2-diffcorr/2-height/2,plug_w/2])sphere(d=plug_w*2/3-2*diffcorr,center=true);
  translate([0,+plug_w/2+diffcorr/2+height/2,0])cylinder(d=plug_w*2/3-2*diffcorr,h=plug_w,center=true);
  translate([0,+plug_w/2+diffcorr/2+height/2,plug_w/2])sphere(d=plug_w*2/3-2*diffcorr,center=true);
}

module drawer(type=1) {
  union() {
    if (type==1 || type==2 || type==4) {
      //bottom
      cube([drawer_x-adjustment,drawer_y,drawer_t], center=true);
      // left wall
      translate([-drawer_x/2+drawer_t/2+adjustment/2,0,drawer_z/2-drawer_t/2-adjustment/2])
        cube([drawer_t,drawer_y,drawer_z-adjustment], center=true);
      // right wall
      translate([+drawer_x/2-drawer_t/2-adjustment/2,0,drawer_z/2-drawer_t/2-adjustment/2])
        cube([drawer_t,drawer_y,drawer_z-adjustment], center=true);
      // back wall
      translate([0,+drawer_y/2-drawer_t/2,drawer_z/2-drawer_t/2-adjustment/2])
        cube([drawer_x-adjustment,drawer_t,drawer_z-adjustment], center=true);
      // drawer stops
      translate([+drawer_x/2-drawer_t/4,+drawer_y/2-drawer_t/2,shelf_z])
        scale([1,1,1.4])rotate([90,0,0])cylinder(r=drawer_t,h=drawer_t,center=true);
      translate([-drawer_x/2+drawer_t/4,+drawer_y/2-drawer_t/2,shelf_z])
        scale([1,1,1.4])rotate([90,0,0])cylinder(r=drawer_t,h=drawer_t,center=true);
      // front wall
      translate([0,-drawer_y/2+drawer_t/2,cornerradius-drawer_t/2])
        hull() {
          translate([-drawer_x/2+drawer_t,0,0])rotate([90,0,0]) cylinder(r=cornerradius,h=drawer_t,center=true);
          translate([+drawer_x/2-drawer_t,0,0])rotate([90,0,0]) cylinder(r=cornerradius,h=drawer_t,center=true);
          translate([-drawer_x/2+drawer_t,0,drawer_z-cornerradius*2])rotate([90,0,0]) cylinder(r=cornerradius,h=drawer_t,center=true);
          translate([+drawer_x/2-drawer_t,0,drawer_z-cornerradius*2])rotate([90,0,0]) cylinder(r=cornerradius,h=drawer_t,center=true);
        }
      // handle
      if (drawer_z>20) {
        drawer_z=20;
        translate([0,-drawer_y/2+drawer_t/2-2.5,drawer_z/2-drawer_t])cube([4,5,drawer_z-drawer_t], center=true);
        translate([0,-drawer_y/2-drawer_t-6,drawer_z/2-drawer_t])cylinder(d=6,h=drawer_z-drawer_t, center=true);
        translate([0,-drawer_y/2-drawer_t-6,drawer_z/2-drawer_t+drawer_z/2-drawer_t/2])sphere(d=6, center=true);
      }
    }
    if (type==2 || type==4) {
      translate([0,0,drawer_z/2-drawer_t/2-adjustment/2])
        cube([drawer_t,drawer_y,drawer_z-adjustment], center=true);
    }
    if (type==4) {
      translate([0,0,drawer_z/2-drawer_t/2-adjustment/2])
        cube([drawer_x-adjustment,drawer_t,drawer_z-adjustment], center=true);
    }
  }
}

module prism(l, w, h, pos){
  rotate(pos) translate([-l/2,-w/2,-h/2])polyhedron(
    points=[[0,0,0], [l,0,0], [l,w,0], [0,w,0], [0,w,h], [l,w,h]],
    faces=[[0,1,2,3],[5,4,3,2],[0,4,5,1],[0,3,4],[5,2,1]]
  );
}

```


[User]
I'm looking to create a highly customizable dice in OpenSCAD. I want to be able to control the size of the die, how rounded the edges are (from a perfect cube to very rounded), and most importantly, the images engraved on each of the six faces. I'd like to control the depth of those engravings too.

The included design has a good start, but I'd like to be able to:

1.  **Specify images:** I need to be able to use image files (PNGs) as heightmaps to define the engravings on each face. The current design works like this, which is good, but the images shouldn't be stretched - they should be scaled to fit. I'd like to be able to control if they're stretched or scaled.
2.  **Multiple imagesets:** I'd like to be able to easily switch between different image sets, potentially using a parameter that specifies a folder where all the PNG heightmaps for one "set" are located. This is kind of implemented in the provided code but could be done in a better way.
3.  **More engraving control:** Instead of a single depth for all engravings, let me set the depth of each engraving separately. Also, I would like the option to invert the heightmap (so that the white parts become the recessed ones, and the black parts become the raised ones) on a per-face basis.
4.  **Dice number parameter:** Can you also make a parameter to specify the number of sides of the die, so I could make a d4, d6, d8, d10, d12, d20, etc., not just a d6? It would need to use a different arrangement for the numbers or images for non-d6 dice. I'm not sure what the best arrangement would be - maybe you could suggest an option, or if it isn't too complex, provide options?
5.  **Edge rounding:** The current rounding mechanism is based on a percentage, but I'd prefer parameters to control the rounding radius or the chamfer width on each edge independently so I could create something like a 'sharp' dice or a cube with 'pillowed' sides.
6.  **Preview Options**: Add a preview toggle that will only render one face, so the processing time of previewing only one face will be faster.
7.  **Image Size Parameter**: I'd like to specify the image size to be used in the heightmap so that if the image is less than 100x100 or some other value, it will scale appropriately. This should allow for more low-resolution images to be imported and mapped without issues.
8.  **Different ways to scale the images**: I'd like to be able to specify different methods of how the image is scaled to fit a face, like "Stretch", "Fit", "Fit_Center", "Tile", and "None".

I'm imagining all of these options will make for a very configurable dice generator that should be useful for all kinds of board game accessories or just cool personal projects. I don't have any specific libraries in mind, so use whatever you think is best.

I'm really excited to see what you can do!

[Assistant]
Ultimate_configurable_dice.scad:
```
/* +----------------------------------+
   |    ULTIMATE CONFIGURABLE DICE    |
   +----------------------------------+
   | First release: 01 DEC 2016       |
   | Author: Henrik Sozzi             |
   | Country: Italy                   |
   | E-Mail: henrik_sozzi@hotmail.com |
   +----------------------------------+-----------------------+
   | Twitter: https://twitter.com/henriksozzi                 |
   | Thingiverse: http://www.thingiverse.com/energywave/about |
   | 3DHUB: https://www.3dhubs.com/milan/hubs/3d-lab          |
   | Shapeways: http://3dlabshop.com                          |
   +----------------------------------------------------------+
   | LICENSE: Creative Commons - Attribution - Non-Commercial |
   | All uses not included in the license like, but not       |
   | limited to, commercial use should be authorized by the   |
   | author in a written form. If not authorized all other    |
   | uses are forbidden and persecuted by law.                |
   +----------------------------------------------------------+
*/
// Dice size in (mm)
DiceSide = 20; // [5:1:50]
// How much to "spherize" the dice. 0=cube, 10=normal, 20=max roundness
Roundness = 10; // [0:1:20]
// How depth to engrave faces with given images (mm)
EngravingDepth = 1; // [0.1:0.1:5]
// Face 1 engraving image (heightmap)
Side1Engraving = "1.png"; // [image_surface:100x100]
// Face 2 engraving image (heightmap)
Side2Engraving = "2.png"; // [image_surface:100x100]
// Face 3 engraving image (heightmap)
Side3Engraving = "3.png"; // [image_surface:100x100]
// Face 4 engraving image (heightmap)
Side4Engraving = "4.png"; // [image_surface:100x100]
// Face 5 engraving image (heightmap)
Side5Engraving = "5.png"; // [image_surface:100x100]
// Face 6 engraving image (heightmap)
Side6Engraving = "6.png"; // [image_surface:100x100]

/* [Hidden] */
// This is a shortcut if you want to change texture-set using same files in subfolders.
// Set the following to the subfolder name where the 6 engraving textures are stored
// Must terminate with "\\" like "Textures - Names\\"
TextureFolder = "";

// Don't touch the following constants :)
SphereRadius = DiceSide * ((1-Roundness/10)*(0.87-0.70)+0.70);
EngravingCorrection = -0.014;
SizeCorrection = 1.01;
Mult = (15-(Roundness-10))/15;
SurfaceSide = (Roundness>10 ? DiceSide*Mult : DiceSide) * SizeCorrection;

difference(){
    intersection(){
        cube(DiceSide, true);
        sphere(SphereRadius, true, $fn=100);
    }
    SideSub(1);
    SideSub(2);
    SideSub(3);
    SideSub(4);
    SideSub(5);
    SideSub(6);
}

module SideSub(Number){

    if (Number == 1)
    {
        mirror([1,0,0])
        translate([0,0,DiceSide/2-EngravingCorrection])
        rotate([0,180,0])
        resize([SurfaceSide, SurfaceSide, EngravingDepth])
        surface(file = str(TextureFolder, Side1Engraving), center = true, invert = false);
    }
    else if (Number == 2)
    {
        rotate([-90,0,0])
        mirror([0,1,0])
        translate([DiceSide/2-EngravingCorrection,0,0])
        rotate([0,270,00])
        resize([SurfaceSide, SurfaceSide, EngravingDepth])
        surface(file = str(TextureFolder, Side2Engraving), center = true, invert = false);
    }
    else if (Number == 3)
    {
        mirror([1,0,0])
        translate([0,DiceSide/2-EngravingCorrection,0])
        rotate([90,0,0])
        resize([SurfaceSide, SurfaceSide, EngravingDepth])
        surface(file = str(TextureFolder, Side3Engraving), center = true, invert = false);
    }
    else if (Number == 4)
    {
        mirror([0,0,1])
        translate([0,-(DiceSide/2-EngravingCorrection),0])
        rotate([270,0,0])
        resize([SurfaceSide, SurfaceSide, EngravingDepth])
        surface(file = str(TextureFolder, Side4Engraving), center = true, invert = false);
    }
    else if (Number == 5)
    {
        rotate([-90,0,0])
        mirror([0,1,0])
        translate([-(DiceSide/2-EngravingCorrection),0,0])
        rotate([0,90,0])
        resize([SurfaceSide, SurfaceSide, EngravingDepth])
        surface(file = str(TextureFolder, Side5Engraving), center = true, invert = false);
    }
    else
    {
        mirror([0,1,0])
        translate([0,0,-(DiceSide/2-EngravingCorrection)])
        resize([SurfaceSide, SurfaceSide, EngravingDepth])
        surface(file = str(TextureFolder, Side6Engraving), center = true, invert = false);
    }
}

```


[User]
I'd like to create a customizable hexagonal pencil holder pot, and I have some specific design parameters in mind.

The main idea is a central hexagonal pot surrounded by six other hexagonal pots, arranged like a flower or daisy.  All of the hexagons should have a consistent radius, which should be a parameter I can adjust.  They should also share a consistent wall thickness.

The height of each of the surrounding six hexagonal pots, as well as the central pot, should each be individually adjustable parameters.  So there will be seven total height parameters to play with.

I'm looking for a single, printable, solid object, not separate pieces. The wall thickness should be consistent all around. The hexagon pots should have a bottom to them, so they function as containers. I'd like the internal space of each hex to be a hollow area. The wall thickness should be controllable as well.

Can you generate an OpenSCAD file to do this? I don't need any included libraries or anything, just the core code necessary to build the object.

[Assistant]
hexa-hive-bee-pencilholder-pot_crayon_customizer.scad:
```
//radius of hex
radius = 20 ;

//shell thickness
shell_thickness =0.84 ;

//height of central hex
central_hex_height = 90 ;

//height of North East hex
NE_hex_height = 60 ;

//height of North hex
N_hex_height = 35 ;

//height of North West hex
NW_hex_height = 75 ;

//height of South West hex
SW_hex_height = 80 ;

//height of South hex
S_hex_height = 80 ;

//height of South East hex
SE_hex_height = 80 ;

module pot_hexa(h,r,shell) {
	difference (){
        cylinder(h,r,r,$fn=6);
        translate([0,0,shell])
        cylinder(h,r-shell,r-shell,$fn=6);
}
};

module marguerite(h,r,shell,face1,face2,face3,face4,face5,face6) {

//centre
    pot_hexa(h,r+shell_thickness/2,shell) ;

if (face1>0) {
    translate([3/2*r,r*sqrt(3)/2,0])
    pot_hexa(face1,r+shell_thickness/2,shell) ;
}

if (face2>0) {
    translate([00,sqrt(3)*r,0])
    pot_hexa(face2,r+shell_thickness/2,shell) ;
}
if (face3>0) {
    translate([-3/2*r,r*sqrt(3)/2,0])
    pot_hexa(face3,r+shell_thickness/2,shell) ;
}

if (face4>0) {
    translate([00,-sqrt(3)*r,0])
    pot_hexa(face4,r+shell_thickness/2,shell) ;
}
if (face5>0) {
    translate([-3/2*r,-r*sqrt(3)/2,0])
    pot_hexa(face5,r+shell_thickness/2,shell) ;
}

if (face6>0) {
    translate([3/2*r,-r*sqrt(3)/2,0])
    pot_hexa(face6,r+shell_thickness/2,shell) ;
}
    }

marguerite(central_hex_height,radius,shell_thickness,NE_hex_height,N_hex_height,NW_hex_height,SW_hex_height,S_hex_height,SE_hex_height) ;

```


[User]
Hey there, I'm looking to design a heat exchanger, and I'd like to use OpenSCAD to make it parametric. I've seen a few designs, and I have a general idea in mind, but I need a flexible setup.

Essentially, I want to create a series of alternating chambers, connected by pipes, for a counter-flow heat exchanger. Here are the parameters I'd like to control:

**Pipes:**
*   `pipe_inner_diameter`: The inner diameter of the pipes.
*   `pipe_wall_thickness`: The thickness of the pipe walls.
*   `connector_height`: The height of the pipe connectors.
*   `connector_inner_diameter`: The inner diameter of the pipe connectors.

**Chambers:**
*   `width`: The width of a single chamber.
*   `length`: The length of a single chamber.
*   `thickness`: The overall thickness of a chamber.
*   `wall`: The thickness of the chamber walls.
*   `number`: The number of chambers in the heat exchanger.
*   `camera_ribs`: The number of ribs inside each chamber.

**Visualization:**
*   `show_inside`: An option to show the inside of the heat exchanger, perhaps by cutting away part of it (0 for no cut, 1 for box cut, and 2 for half cut).
*   `show_colors`: An option to color chambers (1 for yes, 0 for no).
*   `show_split`: How chambers are colored (0 for red/blue alternating, 1 for blue/red alternating, 2 for no split)
*  `show_split_chamber`: A specific chamber to cut horizontally through. Should be an integer to specify a chamber or 0 for off.
*   `show_arrows`: An option to show arrows indicating the direction of flow.

The chambers should alternate in flow direction, so fluid flows in one direction through a chamber and then the opposite direction in the next one.  I think a useful default would be for one end of the exchanger to have an inlet and outlet, with the other end also having an inlet and an outlet. The connectors should also be configurable to accept standard pipe fittings.

I'd like to keep things as simple as possible, and I'm not looking for advanced techniques or complex shapes. I do want the chamber shapes to be rounded rectangles.  I'm also not looking to use any special libraries; I'd like for it to be pure OpenSCAD.

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

[Assistant]
heat_exchangerV21.scad:
```
//heat exchanger version 2.1 by akaJes 2016 (c)
/*[pipes]*/
//
pipe_inner_diameter=8;
//
pipe_wall_thickness=2;
//
connector_height=10;
//size for tap
connector_inner_diameter=7.5;
/*[chambers]*/
// of chamber
width=50;
// of chamber
length=100;
// of chamber
thickness=8;
// chamber thickness
wall=1;
// of chambers
number=8;
//number
camera_ribs=3;//[1,3,5]

/* [visualization] */
//(cutted chambers)
show_inside=1; //[2:Half,1:Box,0:No]
//colored chambers
show_colors=1; //[1:Yes,0:No]
// chambers
show_split=2; //[0:Red,1:Blue,2:No]
//horizontal
show_split_chamber=0; //[0:Off,1,2,3,4,5,6,7,8,10]
//direction of flow
show_arrows=1; //[1:Yes,0:No]

function colored(c)=show_colors?c:"yellow";
pd=pipe_inner_diameter;
pt=pipe_wall_thickness;

difference(){
  heat_exchager();
  if (show_inside==1)
    translate([width/2+2,10,-thickness*2.5])cube([width/2,length-20,70]);
  else if (show_inside==2)
    translate([width/2+2,-10,-100])cube([width/2,length+20,7000]);
  if (show_split_chamber)
    translate([-10,-10,(thickness-wall)*show_split_chamber-thickness/2])cube([width+20,length+20,7000]);
}
module connector(){
  difference(){
    union(){
      cylinder(d=pd+2*pt,h=connector_height,$fn=6);
      cylinder(d=pd+3*pt,h=pt);
    }
    translate([0,0,-.01])
    cylinder(d=connector_inner_diameter,h=connector_height+.02);
  }
}
module arrow(cl){
  if (show_arrows)
    translate([0,0,20]){
      cylinder(d=pd,h=pd*2);
      translate([0,0,pd*2])cylinder(d1=pd*2,d2=1,h=pd);
    }
}
module heat_exchager(){
  for (i=[0:number-1])
    translate([0,0,(thickness-wall)*i])
      section(i,i==0||i==number-1);
}
module section(side=0,upper=1){
  difference(){
    union(){
      if(show_split!=side%2)
      color(colored(side%2?"red":"blue"))
      camera(width,length,thickness,wall,side);
      holes(side,upper);
    }
    holes(side,upper,1);
  }
}
module holes(side,upper=1,hole=0){
  assign(sh=pd/2+pt*2)
  assign(ch=floor(side/2)%2){
    translate([(width-pd*2)*(side%2)+pd,0,0]){
      color(colored(side%2?"red":"blue"))
      translate([0,ch?sh:length-sh,wall]){
          mirror([0,0,1])pipe(pd,pt,wall,hole);
          if (!hole&&side==0&&upper){ //bottom
            translate([0,0,-pd*8])arrow();
            mirror([0,0,1])translate([0,0,wall])connector();
          }
      }
      translate([0,ch?length-sh:sh,thickness-wall]){
        color(colored(side%2?"red":"blue"))
          pipe(pd,pt,wall,hole);
        color(colored(side%2?"lightcoral":"RoyalBlue"))
          if (!hole&&side!=0&&upper){ //top
            translate([0,0,wall])connector();
            arrow();
          }
      }
    }
    assign(ch2=floor((side+1)/2)%2)
    translate([(width-pd*2)*(1-(side%2))+pd,0,0])
      translate([0,ch2?sh:length-sh,0]){
        color(colored(!side%2?"red":"blue"))
          pipe(pd,pt,thickness,hole);
        if (!hole){
          color(colored(!side%2?"red":"blue"))
            if (side==0&&upper){ //bottom
              translate([0,0,-pd*8])arrow();
              mirror([0,0,1])connector();
            }
          color(colored(!side%2?"lightcoral":"RoyalBlue"))
            if (side!=0&&upper){ //top
              translate([0,0,pd])arrow();
              translate([0,0,thickness])connector();
            }
        }
    }
  }
}
module pipe(d,t,h,hole=0){
  if (hole)
    translate([0,0,-0.1])cylinder(d=d,h=h+.2);
  else
    difference(){
      cylinder(d=d+2*t,h=h);
      translate([0,0,-0.1])cylinder(d=d,h=h+.2);
    }
}
module camera(w,l,h,t,side=0,r=3,ribs=camera_ribs){
  difference(){
    rounded_cube(w,l,h,r);
    translate([t,t,t])rounded_cube(w-2*t,l-2*t,h-2*t,r);
  }
  if (ribs){
    intersection(){
      rounded_cube(w,l,h,r);
      assign(step=l/(ribs+1))
        for (i=[1:ribs])
          assign(hole=w/3,angle=45)
            translate([(i+side)%2?0:hole,step*i,0])
              rotate([angle,0,0])
                cube([w-hole,t,h/cos(angle)]);
      }
    }
}
module rounded_cube(w,d,h,ri){
  if(ri==0)
    cube([w,d,h]);
  else
    resize([w,d,h])
  assign(min_s=min(min(w,d),h))
  assign(r=min(ri,min_s/2))
  hull(){
    for (i=[r,h-r])
      for (j=[r,d-r])
        for (y=[r,w-r])
          translate([y,j,i])sphere(r,$fn=16);
  }
}
```


[User]
Hey there, I'm looking to design a customizable clamp in OpenSCAD, and I'd love some help! I've seen some really cool designs online and I want to make one of my own with a good bit of adjustability.

Basically, the clamp should have a base, a bolt with a knob, and a press piece. All the main dimensions like the length, width, and height of the base should be adjustable as parameters. The bolt should have a knurled knob and a threaded section and a small sphere at the end, and the press should be rounded, and have a little sphere at the end to mate with the bolt.

Here’s what I’m thinking for specific parameters:

**Clamp Base:**
*   `clamp_length`: The overall length of the clamp.
*   `clamp_height`: The overall height of the clamp.
*  `clamp_width`: The overall width of the clamp.
*   `clamp_thickness`: The thickness of the clamp material.
*   `rounding`: The radius of the rounding on the corners of the main body
*   `radius`: A scaling factor for corner radius relative to the clamp's thickness
*   `diameter_ball`: The diameter of the sphere at the end of the bolt and press.

**Bolt & Knob:**
*   `knob_length`: The length of the knurled knob.
*   `knob_diameter`: The diameter of the knurled knob.
*   `screw_diameter`: The diameter of the threaded screw section of the bolt.
*  `screw_length`: The length of the threaded portion of the bolt.
*   `press_diameter`: The diameter of the press piece.

**Visibility:**
*   `show_bolt`: Boolean to show or hide the bolt in the assembled model.
*   `show_press`: Boolean to show or hide the press in the assembled model.
*   `show_clamp`: Boolean to show or hide the clamp in the assembled model.
*   `show_assembled`: Boolean to show or hide an assembled model.

I'd like to be able to toggle visibility for the different components, so I can work on them separately. Also, there should be an option to show an assembled version.

The design should use rounded corners on the main clamp body. The bolt should have a knurled surface, and the press piece should also have a rounded shape. The threading on the bolt and base should be created using the `screw_thread` module. For the knurled knob, I'd like to use the `knurled_cyl` module. These two modules are from the `polyScrewThread.scad` and `knurledFinishLib.scad` libraries, respectively. Please create an `openSCAD` file that includes these libraries, using the modules `knurled_cyl` and `screw_thread`.

Could you generate the OpenSCAD files for this?

[Assistant]
clampV2.scad:
```
// clamp customizable akaJes 2016 (c)

//include <polyScrewThread.h>
//include <knurledFinishLib.h>
/*[clamp]*/
//
clamp_length=60;
clamp_height=24;
clamp_width=28;
clamp_thickness=10;
/*[bolt&press]*/
knob_length=25;
knob_diameter=20;
screw_diameter=14;
press_diameter=20;
/*[visibility]*/
show_bolt=1; //[0:No,1:Yes]
show_press=1; //[0:No,1:Yes]
show_clamp=1; //[0:No,1:Yes]
//don't print assembled!!! :)
show_assembled=1; //[0:No,1:Yes]

/*[hidden]*/
screw_length=clamp_length-8;
rounding=2;
length=clamp_length-rounding*2;
height=clamp_height-rounding*2;
width=clamp_width-rounding*2;
thickness=clamp_thickness-rounding*2;
hole_shift=width-min(clamp_height/2,width/2);
radius=1.7;//corners;
diameter_ball=8;

if (show_assembled)rotate([0,0,180]){
  base();
  translate([-knob_length-radius*thickness-rounding-10,hole_shift,clamp_height/2]){
    rotate([0,90,0])bolt();
    translate([knob_length+screw_length+5+8,0,0])rotate([0,-90,0])press();
  }
}else{
  if(show_clamp)
    base();
  if(show_press)
    translate([30,width+20,0])press();
  if(show_bolt)
    translate([0,width+20,0])bolt();
}

module corner(tr){
  intersection(){
    difference(){
      cylinder(r=tr,h=height,$fn=64);
      translate([0,0,-.1])
        cylinder(r=thickness*(radius-1),h=height+.2,$fn=32);
    }
    translate([-tr,-tr,0])cube([tr,tr,height]);
  }
}
module base(){
  translate([0,0,rounding])
    difference(){
    minkowski(){
      assign(tr=thickness*radius,ti=thickness*(radius-1))union(){
        corner(tr);
        translate([-tr,0,0])cube([thickness,width,height]);
        translate([0,-tr,0])cube([length-ti*2,thickness,height]);
        translate([length-ti*2,0,0])rotate([0,0,90])corner(tr);
        translate([length-ti,0,0])cube([thickness,width,height]);
      }
      sphere(r=rounding,$fn=16);
    }
    translate([0,hole_shift,height/2])rotate([0,-90,0])screw_thread(screw_diameter+0.6,4,55,20,PI/2,2);
  }
}
module bolt(){
    knurled_cyl(knob_length, knob_diameter, 2.5, 2.5, 1, 2, 10);
    translate([0,0,knob_length])screw_thread(screw_diameter,4,55,screw_length,PI/2,2);
    translate([0,0,knob_length+screw_length])cylinder(h=6,d=6,$fn=30);
    translate([0,0,knob_length+screw_length+5])sphere(d=diameter_ball,$fn=32);
}
module rounded(h=5,d=20,r=2){
  translate([0,0,r])
    minkowski(){
      cylinder(d=d-r*2,h=h-r*2);
      sphere(r=r);
    }
}
module press(){
    assign($fn=32)
    difference(){
      union(){
        rounded(h=5,d=press_diameter,r=1);
        rounded(h=10,d=14,r=1);
        }
      translate([0,0,10-2])sphere(d=diameter_ball+.6);
      for (i=[0,120,240])
        translate([0,0,6.5])rotate([90,0,90+i])hull(){
          cylinder(d=3,h=10);
          translate([0,5,0])cylinder(d=3,h=10);
        }
    }
}

/*
 * knurledFinishLib.scad
 *
 * Written by aubenc @ Thingiverse
 *
 * This script is licensed under the Public Domain license.
 *
 * http://www.thingiverse.com/thing:9095
 *
 * Usage:
 *
 *    knurled_cyl( Knurled cylinder height,
 *                 Knurled cylinder outer diameter,
 *                 Knurl polyhedron width,
 *                 Knurl polyhedron height,
 *                 Knurl polyhedron depth,
 *                 Cylinder ends smoothed height,
 *                 Knurled surface smoothing amount );
 */
module knurled_cyl(chg, cod, cwd, csh, cdp, fsh, smt)
{
    cord=(cod+cdp+cdp*smt/100)/2;
    cird=cord-cdp;
    cfn=round(2*cird*PI/cwd);
    clf=360/cfn;
    crn=ceil(chg/csh);

    intersection()
    {
        shape(fsh, cird, cord-cdp*smt/100, cfn*4, chg);

        translate([0,0,-(crn*csh-chg)/2])
          knurled_finish(cord, cird, clf, csh, cfn, crn);
    }
}

module shape(hsh, ird, ord, fn4, hg)
{
        union()
        {
            cylinder(h=hsh, r1=ird, r2=ord, $fn=fn4, center=false);

            translate([0,0,hsh-0.002])
              cylinder(h=hg-2*hsh+0.004, r=ord, $fn=fn4, center=false);

            translate([0,0,hg-hsh])
              cylinder(h=hsh, r1=ord, r2=ird, $fn=fn4, center=false);
        }

}

module knurled_finish(ord, ird, lf, sh, fn, rn)
{
    for(j=[0:rn-1])
    assign(h0=sh*j, h1=sh*(j+1/2), h2=sh*(j+1))
    {
        for(i=[0:fn-1])
        assign(lf0=lf*i, lf1=lf*(i+1/2), lf2=lf*(i+1))
        {
            polyhedron(
                points=[
                     [ 0,0,h0],
                     [ ord*cos(lf0), ord*sin(lf0), h0],
                     [ ird*cos(lf1), ird*sin(lf1), h0],
                     [ ord*cos(lf2), ord*sin(lf2), h0],

                     [ ird*cos(lf0), ird*sin(lf0), h1],
                     [ ord*cos(lf1), ord*sin(lf1), h1],
                     [ ird*cos(lf2), ird*sin(lf2), h1],

                     [ 0,0,h2],
                     [ ord*cos(lf0), ord*sin(lf0), h2],
                     [ ird*cos(lf1), ird*sin(lf1), h2],
                     [ ord*cos(lf2), ord*sin(lf2), h2]
                    ],
                triangles=[
                     [0,1,2],[2,3,0],
                     [1,0,4],[4,0,7],[7,8,4],
                     [8,7,9],[10,9,7],
                     [10,7,6],[6,7,0],[3,6,0],
                     [2,1,4],[3,2,6],[10,6,9],[8,9,4],
                     [4,5,2],[2,5,6],[6,5,9],[9,5,4]
                    ],
                convexity=5);
         }
    }
}

/*
 *    polyScrewThread.scad    by aubenc @ Thingiverse
 *
 * This script contains the library modules that can be used to generate
 * threaded rods, screws and nuts.
 *
 * http://www.thingiverse.com/thing:8796
 *
 * CC Public Domain
 */

module screw_thread(od,st,lf0,lt,rs,cs)
{
    or=od/2;
    ir=or-st/2*cos(lf0)/sin(lf0);
    pf=2*PI*or;
    sn=floor(pf/rs);
    lfxy=360/sn;
    ttn=round(lt/st)+1;
    zt=st/sn;

    intersection()
    {
        if (cs >= -1)
        {
            thread_shape(cs,lt,or,ir,sn,st);
        }

        full_thread(ttn,st,sn,zt,lfxy,or,ir);
    }
}

module hex_nut(df,hg,sth,clf,cod,crs)
{

    difference()
    {
        hex_head(hg,df);

        hex_countersink_ends(sth/2,cod,clf,crs,hg);

        screw_thread(cod,sth,clf,hg,crs,-2);
    }
}

module hex_screw(od,st,lf0,lt,rs,cs,df,hg,ntl,ntd)
{
    ntr=od/2-(st/2+0.1)*cos(lf0)/sin(lf0);

    union()
    {
        hex_head(hg,df);

        translate([0,0,hg])
        if ( ntl == 0 )
        {
            cylinder(h=0.01, r=ntr, center=true);
        }
        else
        {
            if ( ntd == -1 )
            {
                cylinder(h=ntl+0.01, r=ntr, $fn=floor(od*PI/rs), center=false);
            }
            else if ( ntd == 0 )
            {
                union()
                {
                    cylinder(h=ntl-st/2,
                             r=od/2, $fn=floor(od*PI/rs), center=false);

                    translate([0,0,ntl-st/2])
                    cylinder(h=st/2,
                             r1=od/2, r2=ntr,
                             $fn=floor(od*PI/rs), center=false);
                }
            }
            else
            {
                cylinder(h=ntl, r=ntd/2, $fn=ntd*PI/rs, center=false);
            }
        }

        translate([0,0,ntl+hg]) screw_thread(od,st,lf0,lt,rs,cs);
    }
}

module thread_shape(cs,lt,or,ir,sn,st)
{
    if ( cs == 0 )
    {
        cylinder(h=lt, r=or, $fn=sn, center=false);
    }
    else
    {
        union()
        {
            translate([0,0,st/2])
              cylinder(h=lt-st+0.005, r=or, $fn=sn, center=false);

            if ( cs == -1 || cs == 2 )
            {
                cylinder(h=st/2, r1=ir, r2=or, $fn=sn, center=false);
            }
            else
            {
                cylinder(h=st/2, r=or, $fn=sn, center=false);
            }

            translate([0,0,lt-st/2])
            if ( cs == 1 || cs == 2 )
            {
                  cylinder(h=st/2, r1=or, r2=ir, $fn=sn, center=false);
            }
            else
            {
                cylinder(h=st/2, r=or, $fn=sn, center=false);
            }
        }
    }
}

module full_thread(ttn,st,sn,zt,lfxy,or,ir)
{
    for(i=[0:ttn-1])
    {
        for(j=[0:sn-1])
        {
            polyhedron(
                  points=[
                          [0,                  0,                  i*st-st            ],
                          [ir*cos((j+1)*lfxy), ir*sin((j+1)*lfxy), i*st+(j+1)*zt-st   ],
                          [ir*cos(j*lfxy),     ir*sin(j*lfxy),     i*st+j*zt-st       ],
                          [or*cos((j+1)*lfxy), or*sin((j+1)*lfxy), i*st+(j+1)*zt-st/2 ],
                          [or*cos(j*lfxy),     or*sin(j*lfxy),     i*st+j*zt-st/2     ],
                          [0,                  0,                  i*st+st            ],
                          [ir*cos((j+1)*lfxy), ir*sin((j+1)*lfxy), i*st+(j+1)*zt      ],
                          [ir*cos(j*lfxy),     ir*sin(j*lfxy),     i*st+j*zt          ]
                         ],
               triangles=[
                          [0,1,2],
                          [5,6,3],[5,3,0],[0,3,1],
                          [3,4,1],[1,4,2],
                          [3,6,4],[4,6,7],
                          [0,2,4],[0,4,5],[5,4,7],
                          [5,7,6]
                         ],
               convexity=5);
        }
    }
}

module hex_head(hg,df)
{
    cylinder(h=hg, r=df/2/sin(60), $fn=6, center=false);
}

module hex_countersink_ends(chg,cod,clf,crs,hg)
{
    translate([0,0,-0.1])
    cylinder(h=chg+0.01,
             r1=cod/2,
             r2=cod/2-(chg+0.1)*cos(clf)/sin(clf),
             $fn=floor(cod*PI/crs), center=false);

    translate([0,0,hg-chg+0.1])
    cylinder(h=chg+0.01,
             r1=cod/2-(chg+0.1)*cos(clf)/sin(clf),
             r2=cod/2,
             $fn=floor(cod*PI/crs), center=false);
}

```


[User]
Hey, I'm looking to make a customizable embossing stamp with a hinged design, similar to a flip phone. I want to be able to upload an image, which will then be embossed onto the bottom part of the stamp, and the top part will serve as a handle and include the hinge mechanism.

Here are the specifics I'm thinking of:

1.  **Image Input:** The design needs to take an image file as an input, and use that to generate the embossed surface. It should have an option to invert colors when creating the embossed surface. I’m thinking something like a 40mm x 40mm print area.

2.  **Hinge Placement:** I’d need a parameter to choose the hinge placement — top, left, bottom, or right - relative to the image.

3.  **Emboss Height:** I need to specify the embossing depth in millimeters.

4.  **Handle Design:** The handle should be attached to the top part of the stamp and I want it to have a rounded rectangular shape with the sides slightly bulged out at the top and bottom for a comfortable grip. It should be at least 70mm long. There will also need to be guide edges around the embossed section on the top part of the stamp so that you can line up the parts properly.

5.  **Hinge Mechanism:** The hinge should be a basic pin-and-socket mechanism with a bit of play so it works well. It should be robust enough to withstand some use.

6.  **Parametric:** Everything, including the image dimensions, handle size, hinge size, etc., should be parametric and customizable by the user. I'd like some spacing between the hinge parts as well for a snug fit.

7.  **Assembly:** The stamp should print in two parts, designed to be assembled after printing so they can move freely.

It would be great if I could have this all in OpenSCAD. Do you think you could generate the necessary `.scad` files for that?

[Assistant]
embossing_stamp.scad:
```
// preview[view:south, tilt:top];

// Simple photos with many shades of light/dark areas work best. Don't forget to click the Invert Colors checkbox!
image_file = ""; // [image_surface:100x100]

//Where would you like the hinge in relation to your image?
hinge_placement = 1; // [1:top,2:left,3:bottom,4:right]

//What height would you like for the embossed area (mm)?
emboss_height = 1.5;

/* [Hidden] */
$fa = 6;
$fs = 1.5;
image_width = 40;
image_length = 40;
image_padding = 4;

handle_width = image_width + image_padding*2;
handle_length = 70;
handle_height = emboss_height+2;
nub = 3; // hinge size
tol = 0.4; // spacing between hinge pieces

assembly();

module assembly() {
    stamp_top(90*hinge_placement);
    stamp_bottom(90*hinge_placement);
}

module stamp_top(rot=90) {
    translate([1,0,0])
    union() {
        difference () {
          translate([handle_length + nub + tol, -handle_width/2, 0])
                rotate([0,0,90]) handle();
translate([handle_length-image_length/2+nub+tol,0,handle_height+0.4])
                rotate([0,180,rot]) plate();

        }

        // hinge
        translate([-1,handle_width/2-2*nub,handle_height]) hinge_m();
        mirror([0,1,0]) translate([-1,handle_width/2-2*nub,handle_height]) hinge_m();
        translate([-1,-nub,handle_height]) hinge_m();
        mirror([0,1,0]) translate([-1,-nub,handle_height]) hinge_m();
    }
}

module stamp_bottom(rot=90) {
    translate([-1,0,0])
    union() {
        translate([-handle_length + image_length/2-nub-tol,0,handle_height])
            rotate([0,0,-rot]) plate();
        mirror([1,0,0]) translate([handle_length + nub + tol, -handle_width/2, 0])
            rotate([0,0,90]) handle();

        // hinge
        translate([1,-nub-tol,handle_height]) hinge_f();
        mirror([0,1,0]) translate([1,-nub-tol,handle_height]) hinge_f();
    }
}

module handle() {
    difference() {
        hull() {
            cube([handle_width, handle_length, handle_height]);
            translate([image_padding,0,0]) cylinder(r=image_padding, h=handle_height);
            translate([handle_width-image_padding,0,0]) cylinder(r=image_padding, h=handle_height);
        }
	guide();
    }

}

module guide() {
difference() {
translate([image_padding,0,-0.5])
        cube([image_width, image_length, 1]);
translate([1,1,-0.5]) cube([image_width-2, image_length-2, 2]);

}
}

module hinge_m() {
    difference () {
    	rotate([0,45,0]) union(){
            translate([0,0,-nub]) cube ([nub*3,nub*2, nub*2]);
            rotate([90,0,0]) {
                translate([0,0,-2*nub]) cylinder(r=nub,h=2*nub);
    		    cylinder(r1=nub,r2=0,h=nub);
            }
    	}
        translate([-nub,-nub/2,-handle_height-nub*5]) cube([nub*5, nub*3, nub*5]);
    }
}

module hinge_f() {
    len = handle_width/2 - 3*nub - 2*tol;

    difference() {
        rotate([90,-45,0])
        difference() {
            union() {
                cylinder(r=nub, h=len);
                translate([-3*nub,-nub,0]) cube([nub*3,nub*2,len]);
            }
            translate([0,0,-0.1]) cylinder(r1=nub+tol,r2=0,h=nub);
            translate([0,0,len-nub+0.1]) cylinder(r1=0,r2=nub+tol,h=nub);
        }
        translate([-nub*4,-len-nub/2,-handle_height-nub*5]) cube([nub*5, len+nub, nub*5]);
    }
}

module plate() {
    scale([(image_width)/100,(image_length)/100, emboss_height])
        surface(file=image_file, center=true, convexity=5);
}

```


[User]
Alright, I'm trying to design a film scanner setup, specifically for medium format film, and I'd like it to be parametric so I can easily adjust it for different camera lenses. I'm envisioning something like the design described in the "Film_Scanner_Lens_Hood.scad" file I've included, but I need a complete set of files, not just the lens hood, so the base plates and everything should be generated.

Basically, here's what I'm after:

**Overall Structure:**

*   **Bottom Plate:** A flat plate, possibly with an opening for a light source. I'd like to specify the size of the opening and the overall dimensions of the plate. It needs to be designed to hold a sheet of acrylic of a specified thickness (like 0.093 inches as mentioned).
*   **Film Holder:** A frame that sits on top of the bottom plate, designed to hold a medium format film negative flat. I need to be able to adjust the size to accommodate different film sizes, and ensure it’s slightly elevated above the bottom plate and acrylic. I'd also like to be able to specify the film gate dimensions.
*   **Lens Hood:** This needs to be parametric, like the example file. It should sit on top of the film holder and encircle the camera lens. It needs a base that rests on the film holder, an opening for the lens, and an outer ring to block light and stabilize the camera. It shouldn't touch the actual lens.
*   **Stackability:** I think it would be good for each component to be stackable, so I can use them in different configurations.

**Key Parameters:**

*   **Bottom Plate:**
    *   `plate_width`, `plate_depth`: Overall dimensions of the bottom plate.
    *   `plate_thickness`: Thickness of the bottom plate itself.
    *   `acrylic_thickness`: Thickness of the acrylic sheet.
    *   `light_opening_width`, `light_opening_depth`: Dimensions of the opening for the light source (can be 0 for no opening)
*   **Film Holder:**
    *  `film_holder_width`, `film_holder_depth`: Overall dimensions of the film holder
    *  `film_holder_thickness`: Thickness of the film holder
    *   `film_gate_width`, `film_gate_depth`: Dimensions of the film gate that holds the film
    *   `film_holder_offset_z` : Offset from the bottom plate.
*   **Lens Hood:**
    *   `focal_distance`: Distance from the film plane to the camera lens.
    *   `lens_ring_height`: Height of the outer ring.
    *   `lens_inner_diameter`: Diameter of the lens opening in the hood.
    *   `lens_outer_diameter`: Outer diameter of the camera lens.
    *   `wall_thickness`: Thickness of the hood walls.
    *   `hood_offset_z`: Offset from the top of the film holder to bottom of the hood.

**Other Considerations:**

*   **OpenSCAD Libraries:** I’m not sure what would be best, but I’m open to using any appropriate OpenSCAD libraries, specifically ones that help with creating parametric shapes, like the BOSL libraries.
*   **Units:** I’m assuming we’ll use millimeters.
*   **File Organization:** I'm thinking a main file that uses modules for each component, and then a file for each component would probably be the best way to go.

Could you generate these OpenSCAD files for me? I need all the .scad files that will be used, including a main file to control everything, and I'll need to know which libraries you use so I can use them. Let me know if you need any more information from me. Thanks!

[Assistant]
Film_Scanner_Lens_Hood.scad:
```
// Focal Distance is offset by 3mm as that is the thickness of the scanner top plates. You may need to adjust further if your glass sits back a little in the lens.
focalDistance = 50;

// Outer ring height - used to stabilize the camera and block light.
lensRingHeight = 15;

// Probably your true lens diameter.  Size of the opening in the lens hood.
lensInnerDiameter = 45;

// Outer diameter of your lens, determines the size of the outer ring that surrounds it.
lensOuterDiameter = 55;

// Determines how think you'd like the walls of the unit to be.
wallThickness = 2;

translate([0,0,-3]){
    translate([0,0,focalDistance-3]){
        difference(){
            cylinder(h=2,d=lensOuterDiameter,$fn=200);
            translate([0,0,-1]){cylinder(h=5,d=lensInnerDiameter,$fn=200);}
        }
    }

    difference(){
        //outside
        union(){
            translate([0,0,focalDistance-3]){
                cylinder(h=lensRingHeight,d=lensOuterDiameter+wallThickness*2,$fn=200);
            }
            hull(){
                translate([0,0,focalDistance-lensRingHeight-3]){
                    cylinder(h=lensRingHeight,d=lensOuterDiameter+wallThickness*2,$fn=200);
                }
                translate([-100.8/2-wallThickness, -70.8/2-wallThickness,3]){
                    cube([100.8+wallThickness*2, 70.8+wallThickness*2, 5.125]);
                }
            }
        }

      //inside
        union(){
            translate([0,0,focalDistance-2-3]){
                cylinder(h=lensRingHeight+10,d=lensOuterDiameter,$fn=200);
            }

            hull(){
                translate([0,0,focalDistance-lensRingHeight-3]){
                    cylinder(h=lensRingHeight,d=lensOuterDiameter,$fn=200);
                }
                translate([-100.8/2, -70.8/2,1]){
                    cube([100.8, 70.8, 5.125+2]);
                }
            }
        }
    }
}
```


[User]
I'm looking to create a customizable helix model in OpenSCAD, something like a DNA strand, but with some adjustable parameters.

I'd like to have two main "sugar-phosphate backbones," which I'm imagining as cylinders or circles, and then "base pairs" connecting them. These base pairs should have a set width and a defined spacing between them. The entire structure should be twisted as it goes up, giving it the helix shape.

Specifically, I'd like to be able to control these things:

*   **Number of Fragments (fn):**  This should affect the smoothness of the circles used, like a detail level. I'm thinking a slider from 0 to 100, with 20 being a good default.
*   **Post Radius:** This is the radius of the two "sugar phosphate backbones," and should be a slider from 0 to 500 with a default of 2
*   **Post Distance Apart:** The distance between the centers of the two "sugar phosphate backbones", a slider from 0 to 500 with a default of 10
*   **Center Bridge Length:** The length of the "base pairs" connecting the backbones, a slider from 0 to 500 with a default of 20
*   **Center Bridge Width:** The thickness of the "base pairs," a slider from 0 to 500 with a default of 0.6. This should be a smaller value, possibly with a smaller increment, like 0.1 or less, and could be adjusted to make them more or less thick.
*   **Helix Height:** The total height of the helix, a slider from 0 to 500, default 72
*   **Helix Twists:** The total degrees of twist of the helix, a slider from 0 to 3600, with a default of 360 (one full revolution).
*   **Helix Slices:** The number of slices used to create the helix extrusion, this will affect resolution and render time. A slider from 0 to 500, default 500.
*    **Helix Scale:** This should scale the helix as it goes up to a specified height. A slider from 0 to 10, default 1. A scale of 1 would be 1 to 1 scaling, scale 0 would be 1 to 0 scaling, scale 2 would be 1 to 2 and so on.
*   **Spacer Radius:** The radius of circles used to create the spaces between the "base pairs," slider from 0 to 500, default 8.15
*   **Spacer Height:** The height of the extrusion of the circles, this will affect the thickness of the "base pairs". A slider from 0 to 550, default 4
*   **Spacer Start:**  The starting point of the "base pairs" along the height of the helix, slider from 0 to 550 with a default of 0.
*   **Spacer Increment Distance:** The spacing between "base pairs", a slider from 0 to 500, default 6.
*   **Spacer Increment Height:** The height in which to stop generating spacers, slider from 0 to 500 with a default of 100.
*   **Base Platform Radius:** The radius of a base platform at the bottom, slider from 0 to 500, default 18.
*  **Base Platform Height:** The height of the base platform, slider from 0 to 100, default 3.
*  **Base Platform Shape:**  Number of sides on the platform, defaults to 'fn' if 0. Slider from 0 to 50, default 6.

I'd like the model to have a platform at the base. I'd also want the "base pairs" to be subtracted from the helix, creating actual gaps, not just extrusions.

I'd like it written in a way that it's easy to adjust these parameters. I also saw some comments about a "simplified" and "complex" way. I'd appreciate it if you could make it the complex way since it's more flexible, and easier to change later.

I don't think I'm using any external libraries, but if it's helpful please feel free to use them. It seems like I would need some kind of linear extrude, so I'd like a module that produces a "base" which the linear extrusion would be based on. This base module, as I am thinking of it, would include the 2 "sugar phosphate backbones" and the "base pairs".

Let me know if you need more information.

[Assistant]
helix_customizer.scad:
```
// number of fragments | a higher fragment count will result in slower render times '20' is sufficient.
fn = 20; // [0:100]
//  "sugar phosphate backbones" | part of helix_base module | if adjusted also consider adjusting 'post_distance_apart' or 'center_bridge_length'.
post_radius = 2; // [0:500]
// part of helix_base module | if adjusted also consider adjusting 'center_bridge_length'.
post_distance_apart = 10; // [0:500]
// "base pairs" length between "sugar phosphate backbones" | part of helix_base module | if adjusted also consider adjusting 'post_distance_apart'.
center_bridge_length = 20; // [0:500]
// part of helix_base module | thickness of "basepairs" in relevence to the the Y-axis of 'helix_base' before "linear_extrude" is implemented. further explanation is below.
center_bridge_width = .6; // [0:0.1:500]
// 'helix_height' adjusts the height of the linear_extruded 'helix_base' module | 'helix_height, helix_twists, helix_twists' all work hand in hand and should be experimented to fully understand the linear_extrude's nature.
helix_height = 72; // [0:500]
// 'helix_twists' adjusts the degree of twist in the linear_extruded 'helix_base' module.
helix_twists = 360; // [0:3600]
// 'helix_slices' adjusts the number of slices used in the linear_extruded 'helix_base' module | more slices = higher resolution and longer render times, less slices = the contrary | 200 is sufficient.
helix_slices = 500; // [0:500]
// this is fun try changing from 0-3 to scale 'helix_base' as it reaches its specified height in 'helix_height' | '1' = 1to1 scale, 0 = 1to0, 2 = 1to2 scale and so on in sequential order.
helix_scale = 1; // [0:10]
// the radius of the differenced circle that creates the spaces between each "base pair" | if adjusted you may also want to adjust 'center_bridge_length' and 'post_distance_apart'.
spacer_radius = 8.15; // [0:500]
// the height of the differenced circle changing this will result in a visual thickness change, in the Z-axis, of each "basepair".
spacer_height = 4; // [0:550]
// the point in the Z-axis at which the spacers will start appearing | 'spacer_start, spacer_increment_distance, and spacer_increment_height all work together to create the "base pairs/ bridges" that appear between each "sugar phosphate backbone/post".
spacer_start = 0; // [0:550]
// the distance between each spacer changing this will result in a visual thickness change, in the Z-axis, of each "basepair".
spacer_increment_distance = 6; // [0:500]
// the height to which the spacers ascend to and then stop being produced.
spacer_increment_height = 100; // [0:500]
// the radius of the circle where the standing platform is located at the base of the helix.
base_platform_radius = 18; // [0:500]
// the height of the above said platform.
base_platform_height = 3; // [0:100]
// the controls the number of sides the platform has, 0 defaults to 'fn'.  3, 4, 5, 6 ...
base_platform_shape = 6; // [0:50]
module helix_basic(){
    translate([-post_distance_apart,0,0]){
        circle(post_radius,$fn = fn);
    }
    translate([post_distance_apart,0,0]){
        circle(post_radius, $fn = fn);
    }

    square([center_bridge_length,center_bridge_width],center = true);
}
// the basic 2D shape that the helix is extruded upon.
union(){
    difference(){
        linear_extrude(height = helix_height, twist = helix_twists, slices =    helix_slices, scale = helix_scale){
            helix_basic();
        }
        for (a = [ spacer_start : spacer_increment_distance : spacer_increment_height])
            translate([0, 0, a]) {
                linear_extrude(height = spacer_height, center = true){
                    circle(spacer_radius, $fn = fn);
                }
            }
    }
 cylinder(r = base_platform_radius, height = base_platform_height, center = true, $fn = base_platform_shape);
}
// this combines/unions the extruded 2D shape 'helix_basic', and the subtracted/differenced spacers, with the standing platform. If you want to see subtracted spacers as part of the model while keeping the integrity of the model you can press F12 which activates the "throwntogether  view option under the view menu in MacOSX.
//changing '$fn = 100', and 'helix_slices' to lower values will result in faster render times at a lower resolution as mentioned above | the render time currently is around 1 min, but will vary based on the hardware inside the machine of use.
// by Nick at midheaventech@gmail.com

```


[User]
Hey, I'm looking for some OpenSCAD code to design a wall-mounted shelf for shoes, specifically to hold the shoe on a horizontal tube. I want it to be parametric so I can adjust it for different sized tubes and different distances from the wall.

Here are the core requirements:

*   The shelf will have a base that attaches to the wall and extends out to support a horizontal tube.
*   There needs to be a cutout to fit the tube. It should be a circular cut-out and it should be designed so that it doesn't rely on supports during printing and has the best outer-face quality possible (so printing from the bottom side up).
*   I need to be able to adjust the distance the tube extends from the wall.
*   I also need to be able to adjust the diameter of the tube cutout for different tubes.
*   The base of the shelf should be rounded where it joins to the side that holds the tube.
*   I would like two screw holes for attaching to the wall, offset a little from the center.
*   I'd like the code to use the BOSL library, for ease of making shapes. I don't think it will need anything else.

Here are some starting parameters, in mm, but I'd like to be able to adjust these through variables in the code:
 * Wall distance (`Lw`): 80
 * Tube diameter (`Dt`): 10
 * Tube support height (`DtH`): 10
 * Plank length (`WL`): 50
 * Plank thickness (`WH`): 10
 * Height of tube cut-out area above base (`HH`) = `DtH` + 2
 * Base rounding radius (`dOkr`): 30

Can you create that for me? Thanks!

[Assistant]
polka.scad:
```
$fn=64;
Lw=80; //расстояние от стены
Dt=10.2; //диаметр трубки
DtH=10; //высота охвата трубки
WL=50;//длина планки
WH=10;//толщина планки
HH=DtH+2;

dOkr=30; //скругление у основания

//cylinder(d=Dt+3*2,h=DtH);
//translate([Lw,-WL/2,0])cube([WH,WL,DtH]);
module shHole(diam){
    cylinder(d=diam,h=40);
        cylinder(d1=diam+4,d2=diam,h=3);
        translate([0,0,-80])cylinder(d=diam+4,h=80);
}

difference(){
    hull(){
        cylinder(d=Dt+3*2,h=HH);
        scale([1,1,1])translate([Lw,-WL/2,0])cube([0.01,WL,HH]);
    }
    cylinder(d=Dt,h=DtH);
    translate([Lw-7,WL/4+3,HH/2])rotate([90,0,90-10]){
        shHole(4);
    }

    mirror([0,1,0])translate([Lw-5,WL/4+3,HH/2])rotate([90,0,90-10]){
        shHole(4);
    }

    hull(){

        translate([Lw-WH-dOkr/2,(Dt+6)/2+dOkr/2,-0.01])cylinder(d=dOkr,h=HH+0.02);
        translate([-10,(Dt+6)/2+dOkr/2,-0.01])cylinder(d=dOkr,h=HH+0.02);

    }
    mirror([0,1,0])hull(){
        translate([Lw-WH-dOkr/2,(Dt+6)/2+dOkr/2,-0.01])cylinder(d=dOkr,h=HH+0.02);
        translate([-10,(Dt+6)/2+dOkr/2,-0.01])cylinder(d=dOkr,h=HH+0.02);

    }
}
```


[User]
I'd like to create a customizable keychain using OpenSCAD. The design should feature a word or name that the user can specify, with a border around the text for a more robust design. The word should be extruded to a certain height and the border should be extruded to a smaller height. Finally, I would like to add a loop on one side of the text for attaching to a keyring. I want the loop to be attached to the main body.

Here are some specifics:

*   **Text:** The user should be able to input any word or name they want.
*   **Font:** Use the "Archivo Black" font.
*   **Text Extrusion:** The text should be extruded to a height of 4 units.
*   **Border:** The user should be able to specify the padding amount around the text. This border should be extruded to a height of 2 units.
*  **Loop:**  The loop should consist of a cylinder and a cube combined using `hull()` to create a smooth transition. This should then be cut with a cylinder to create an actual hole for the keyring. The loop should be connected to the side of the border.
* **Resolution:** To ensure smooth curves, I want to set the `$fn` variable to a value of 75.

Could you generate the OpenSCAD code for this?

[Assistant]
Keychain_archivo.scad:
```
//Word or Name
the_word = "Jeep";
//Padding Around Word
border = 2;
//Resolution - The higher the number, the smoother the print
$fn = 75;
linear_extrude (height = 4) {
    text (the_word, font = "Archivo Black", valign = "center");
}
linear_extrude (height = 2) {
offset (r= border){
    text (the_word, font = "Archivo Black", valign = "center");
    }
}
difference(){
    hull(){
        translate([-4,0,0]) cylinder (h=2, r=4, center=false);
        translate([-4,-4,0]) cube ([8,8,2], false);
    }
    translate([-4,0,0]) cylinder (h=6, r=2, center=true);
}
```


[User]
Hi, I'm looking to create a customizable saxophone/clarinet reed model in OpenSCAD. I've been playing around with some existing designs and have a good idea of what I need.

Essentially, I want to create a reed with a cylindrical base and a variable radius conical tip, where the curvature of the cone is controlled by a series of increments. This is similar to an existing project, but I want to make it more parametric and maybe with a few modifications. The basic idea is like this:

The reed has several key dimensions:

*   **Overall Length:** The total length of the reed.
*   **Cylinder Radius:** The radius of the cylindrical base, which is the part that contacts the ligature.
*   **Back Thickness:** The thickness of the reed at the base.
*   **Back Width:** The width of the reed at the base.
*   **Tip Curvature:** A base radius that defines the starting curvature of the tip (like a circle segment).
*   **Tip Cut Angle:**  The angle of the cone’s axis, giving it an overall slope from the base to the tip.
*   **Tip End Width:** The width of the reed at its very tip.
*   **Tip End Round:** This defines the rounded shape of the tip. Think of it as the semi-minor axis of an ellipse that's used to round the tip.
*   **Tip Initial Thickness:** The thickness of the tip at the leading edge.

Now for the fun part, the tip profile needs to be adjustable:

*   I need to control the profile of the variable radius cone using an array of incremental values. Each element of this array (e.g., `reed_tip_incr0`, `reed_tip_incr1`, etc.) will adjust the base tip radius (`Tip Curvature`). Each increment should control a slice of the cone.
*   For example, `reed_tip_incr1` will control how much the radius of the cone is modified at a particular slice along the length of the cone from the very tip towards the base. The elements should be applied sequentially from the tip to the base.

Finally:

*   I'd like to engrave some text onto the back of the reed. This will be a short text string.

So, to summarize, I need a parametric OpenSCAD file that generates a reed with these features: a cylindrical base, a conical tip with a variable radius, and engraved text on the back.

I think the best approach is to use a `difference` operation to achieve the complex shape with subtractions.

Could you design the OpenSCAD files for this? I do not expect you to use any external libraries for this task. The core logic will be the most important part to get right.

[Assistant]
reed.scad:
```
$fs=0.4;
$fa=0.5;

/* [Global] */
// Reed Name (short text string)
txt="Alto";
// Reed Overall Length (mm)
length=70;
// Reed Cylinder Radius (mm)
reed_cyl_rad=14;
// Reed Back Thickness (mm)
back_thickness=3.1;
// Reed Back Width (in mm)
back_width=13;
// Reed Tip Crosscut Сurvature (mm)
work_rad=200;
// Reed Tip Cut Angle (degrees)
cut_angle=14.0;
// Reed Tip End Width (mm)
width=17;
// Reed Tip End Round (mm)
tip_round=4;
// Reed Tip Initial Thickness (mm)
tip_thickness=0.6;
// Reed Tip Crosscut Increment Element 0 (mm)
reed_tip_incr0=0;
// Reed Tip Crosscut Increment Element 1 (mm)
reed_tip_incr1=-1;
// Reed Tip Crosscut Increment Element 2 (mm)
reed_tip_incr2=-2;
// Reed Tip Crosscut Increment Element 3 (mm)
reed_tip_incr3=-3;
// Reed Tip Crosscut Increment Element 4 (mm)
reed_tip_incr4=-4;
// Reed Tip Crosscut Increment Element 5 (mm)
reed_tip_incr5=-5;
// Reed Tip Crosscut Increment Element 6 (mm)
reed_tip_incr6=-6;
// Reed Tip Crosscut Increment Element 7 (mm)
reed_tip_incr7=-7;
// Reed Tip Crosscut Increment Element 8 (mm)
reed_tip_incr8=-7.5;

/* [Hidden] */
work_rad_incr=[reed_tip_incr0,reed_tip_incr1,reed_tip_incr2,reed_tip_incr3,reed_tip_incr4,reed_tip_incr5,reed_tip_incr6,reed_tip_incr7,reed_tip_incr8];

module reed_base()
{
	difference()
	{
		union()
		{
			translate([0,0,back_thickness-reed_cyl_rad]) rotate([0,90,0]) color([0.4,0.75,0.4])
				cylinder(r=reed_cyl_rad,h=length-tip_round);
 			translate([length-tip_round,0,-0.01]) scale([2 * tip_round / width,1,1])
				cylinder(d=width,h=back_thickness);
		}
		translate([-1,-reed_cyl_rad-1,-reed_cyl_rad*2])
			cube([length+2,reed_cyl_rad*2+2,reed_cyl_rad*2]);
		translate([-0.2,back_width*0.5,-1]) rotate([0,0,atan2((width-back_width)*0.5,length)])
			cube([length+1,width,back_thickness+2]);
		translate([-0.2,-back_width*0.5,-1]) rotate([0,0,-atan2((width-back_width)*0.5,length)]) translate([0,-width,0])
			cube([length+1,width,back_thickness+2]);
	}
}

module reed()
{
	intersection()
	{
		reed_base();
		for_end=len(work_rad_incr)-2;
		color([0.85,0.85,0.35]) translate([length,0,tip_thickness]) rotate([0,cut_angle,0])
		{
			for(i=[0:1:for_end])
			{
				translate([-(i+1)*length*0.5/(len(work_rad_incr)-1),0,-work_rad]) rotate([0,90,0])
					cylinder(r1=work_rad+work_rad_incr[i+1],
						 r2=work_rad+work_rad_incr[i],
						 h=length*0.5/(for_end+1));
			}
			translate([-length,0,-work_rad]) rotate([0,90,0])
				cylinder(r=work_rad+work_rad_incr[for_end+1],h=length*0.5);
		}
	}
}

module reed_with_text()
{
	difference()
	{
		reed();
		translate([1,-2.5,back_thickness-1.0]) linear_extrude(1.1) text(text=txt,size=6);
	}
}

reed_with_text();

```


[User]
Okay, I'm looking to design some buttons for a fidget spinner, specifically ones that fit a standard 608 bearing. I'd like to be able to customize several aspects of the design, so a parametric approach would be ideal.

Here's what I'm thinking:

**Core Requirements:**

*   **Bearing Fit:** The button needs to securely hold a 608 bearing, so it needs a hole with the correct diameter and depth for that. The bearing dimensions should be configurable parameters, including the outer diameter, inner diameter, and thickness. I'm using the typical values right now, but it would be best if those were easily adjustable, with defaults that are common for 608 bearings. I'll use a printer threshold parameter as well.
*   **Button Grip:** I want a small cylindrical "grip" on the top of the button for easier handling when spinning. The height and diameter of this grip should also be configurable.
*   **Optional Magnet:** I'd like the option to embed a magnet into the button's center. If this option is enabled, the magnet's diameter and height should be configurable as well. I should be able to enable this with a simple true/false style parameter.

**Specific Parameters I'd like to control:**

*   `bearing_dia`: Outer diameter of the bearing (with a printer threshold offset.) Default should be `22 + printer_threshold*2`.
*   `bearing_inner_dia`: Inner diameter of the bearing. Default should be 8.
*   `bearing_thickness`: Thickness of the bearing. Default should be 7.2.
*   `printer_threshold`: value to offset to accommodate for printer tolerances
*   `button_grip_h`: Height of the button grip. Default should be 1.
*   `button_spacer`: the height of a cylinder added to help hold the bearing in place. Default should be `0.5`.
*  `button_dia`: Diameter of the main button cylinder. Default should be 20.
*   `magnet`: Boolean parameter to enable/disable the magnet feature.
*   `magnet_dia`: Diameter of the embedded magnet. Only relevant if `magnet` is true.
*   `magnet_h`: Height of the embedded magnet. Only relevant if `magnet` is true.

**Output:**

*   I'd like the design to output a single part, and be designed for 3D printing.
*   The file should be well-commented and easy to understand.
*   The rendering should not take too long. I think using `$fn` is okay but I don't need to have an absurd amount of facets.

Could you generate the OpenSCAD file(s) for me? I do not have any libraries installed, so it should be plain OpenSCAD and not rely on any libraries like MCAD or BOSL.

[Assistant]
Spinner_Button.scad:
```
/*=========================================
Program Name :	Spinner Button
Base Language:	English
Created by   :	Esmarra
Creation Date:  30/11/2016
Rework date entries:
Program Objectives:
Observations:
	Module imported form: EDC Tri-Spinner [28/09/2016]
Special Thanks:
=========================================*/

/* [Bearing] */
// #### 608 Bearing Settings ####
bearing_dia=22+printer_threshold*2 ;
bearing_inner_dia= 8 ;
bearing_thickness=7.2 ;

/* [Button] */
// #### Button Settings ####
button_grip_h=1 ;
button_spacer= 0.5 ;
button_dia = 20 ;
// 20.42 default

// ===== #### =====
/* [Hidden] */
arm_fn=90 ; // <-- Decrease fn for faster rendering
$fn=arm_fn;

module button();

//=======  MAIN  =======
button();

//======= Modules =======

module button(){
	rotate([0,180,0])
	difference(){
		union(){
			translate([0,0,bearing_thickness/2])cylinder(h=button_grip_h,d=button_dia); //
			echo(bearing_dia-2);
			cylinder(h=bearing_thickness/2,d=bearing_inner_dia);
			translate([0,0,(bearing_thickness/2)-button_spacer])cylinder(h=button_spacer,d=bearing_inner_dia+3);
		}
		if(magnet=="true")translate([0,0,-.01])cylinder(d=magnet_dia,h=magnet_h);
		//translate([0,0,bearing_thickness/2+button_grip_h])scale([1,1,.10])sphere(bearing_inner_dia+1.5);
	}
}
```


[User]
Okay, so I found this really cool OpenSCAD customizer that makes these swirling, pillar-like shapes, and I'm hoping to get something a bit more refined out of it. The code I have is a little slow, and I want to see if you can generate something similar but maybe more efficient and flexible.

Here’s the basic idea: the core of the design is a single post, which is essentially a circle extruded into a cylinder. This post can be moved around in 3D space, tilted, and then replicated multiple times while being rotated around a central point. The existing customizer allows a few parameters for the single post: radius, height, number of sides for the circle, position in x,y,z, tilt in x,y,z and finally, twist, scale and slices applied during extrusion. Then, this single post is repeated by revolving it around a central point. I think some efficiency could be gained if this were not a 'for' loop and instead the revolve is actually a 'rotate_extrude' function. There are also a few other issues with how the current file is set up, namely that it is unclear where the origin actually is within the design.

Ideally, I would want the new version to be truly parametric, meaning the parameters should be clearly defined and easily adjustable, just like the old customizer. The current parameters are:

*   `post_radius`: Radius of the circle that becomes the extruded post
*   `post_height`: Height of the extruded post
*   `post_fragment_number`: The number of sides of the circle which makes up the post
*   `post_position_Xaxis`, `post_position_Yaxis`, `post_position_Zaxis`: Position of the post relative to the center of rotation.
*  `post_tilt_Xaxis`, `post_tilt_Yaxis`, `post_tilt_Zaxis`: Rotation of the post in X, Y, and Z axes.
*   `post_count`: Number of posts around the center
*   `post_revolve`: How many degrees the posts should rotate around the center
*   `post_twist`: Twist applied during the extrusion of each post
*   `post_scale`: Scale applied during the extrusion of each post
*   `post_slices`: Number of slices to use in the linear extrusion.

I'd like the new version to use `rotate_extrude` for the circular replication, this way we won't have to deal with nested rotations and translations. It might also make the design faster to process and be more elegant.

Could you create the necessary OpenSCAD file, or files if you think it would be useful to organize things with modules, to handle this? I'm hoping you can also add some comments so I can follow along with the code you generate. I don’t think we need any external libraries for this design.

[Assistant]
hyperboloid_customizer.scad:
```
post_radius = 0.5;//[0:0.1:50]
post_height = 50;//[0:0.1:100]
//How many sides make up the post.
post_fragment_number = 10; //[0:1:20]
//Vertical position of the post in mm from the center point. | 'post_position_Xaxis' and 'post_position_Yaxis' change the radius of the inside hole.
post_position_Xaxis = 5;//[-50:0.1:50
post_position_Yaxis = 15.5;//[-50:0.1:50
//Adjusting this into the positive or negative values will raise or lower the post in the z-axis from the horizon.
post_position_Zaxis = 0;//[-50:0.1:50
//Rotation about the X axis, from the +Y axis, toward the +Z axis.
post_tilt_Xaxis = 40;//[0:0.1:90]
//Rotation about the Y axis, from the +Z axis, toward the +X axis.
post_tilt_Yaxis = 0;//[0:0.1:90]
//Rotation about the Z axis, from the +X axis, toward the +Y axis.
post_tilt_Zaxis = 0;//[0:0.1:90]
//How many posts are used when revolving with 'post_revolve'.
post_count = 250;//
//The degree of revolve
post_revolve = 360; //[0:0.1:360]
//If you want to get a little crazy 'post_twist', 'post_scale', and 'post_slices' control the twist, scale, and slices of the post. you can obtain different effects and patterns when you experiment with these options.
post_twist = 0; //
post_scale = 1;//
post_slices = 0;//

for(a = [0:1/post_count:1])
    rotate(a * post_revolve){
        translate([ post_position_Xaxis, post_position_Yaxis, post_position_Zaxis]){
            rotate([post_tilt_Xaxis, post_tilt_Yaxis, post_tilt_Zaxis]){
                linear_extrude(height = post_height, twist = post_twist, scale = post_scale, slices = post_slices){
                    circle(r = post_radius, $fn = post_fragment_number);
                }
            }
        }
    }

// by Nick at midheaventech@gmail.com
```


[User]
I want to design a vase using Bézier curves in OpenSCAD. I've been playing around with some code, but I'd like you to generate the code for me, as I want to be able to adjust the parameters more easily.

Specifically, I need a vase based on a 2D cubic Bézier curve that is then rotated around the Z axis. I'd like to define four points (P0, P1, P2, and P3) that control the curve's shape, with the Y-values representing height, and the X-values representing the curve's radius. I'd like to have parameters for the x and y values for each point - px0, py0, px1, py1, px2, py2, px3, and py3.

The base of the vase should be a flat circular bottom that connects to the Bézier curve. I need a parameter for the bottom radius. The walls of the vase are to be created by extruding the Bézier curve and rotating the result around the Z axis. There should be a parameter to set the width of this extrusion, and another to set the overall wall thickness.

Also, I'd like to have a boolean parameter to control whether or not the *inside* of the vase is included, created by revolving the profile of the curve with a reduced radius.

Finally, I need parameters to control the smoothness of the curves. One should be `fn`, which controls the number of segments in a full 360 degree rotation. The other parameter, `t_step`, determines how many points are sampled along the Bézier curve; it would be a value between 0 and 1 inclusive, and it should control how smooth the 2D Bézier curve looks.

Could you generate the necessary OpenSCAD file for me, taking all of these parameters into account? I'm not particularly worried about libraries for this project. I'd like all of this in a single .scad file, please.

[Assistant]
bezier_vase.scad:
```
/* [Basic] */

bottom_radius = 25;
curve_width = 12;
thickness = 2;
inner_vase = "YES"; // [YES, NO]

/* [Point0] */

px0 = 0;   // [-300:300]
py0 = 0;   // [-300:300]

/* [Point1] */

px1 = 40;  // [-300:300]
py1 = 60;  // [-300:300]

/* [Point2] */

px2 = -50;  // [-300:300]
py2 = 90;  // [-300:300]

/* [Point3] */

px3 = 0;   // [-300:300]
py3 = 200; // [-300:300]

/* [Advanced] */

fn = 40;
t_step = 0.05;

module line(point1, point2, width = 1, cap_round = true) {
    angle = 90 - atan((point2[1] - point1[1]) / (point2[0] - point1[0]));
    offset_x = 0.5 * width * cos(angle);
    offset_y = 0.5 * width * sin(angle);

    offset1 = [-offset_x, offset_y];
    offset2 = [offset_x, -offset_y];

    if(cap_round) {
        translate(point1) circle(d = width, $fn = 24);
        translate(point2) circle(d = width, $fn = 24);
    }

    polygon(points=[
        point1 + offset1, point2 + offset1,
        point2 + offset2, point1 + offset2
    ]);
}

module polyline(points, width = 1) {
    module polyline_inner(points, index) {
        if(index < len(points)) {
            line(points[index - 1], points[index], width);
            polyline_inner(points, index + 1);
        }
    }

    polyline_inner(points, 1);
}

function bezier_coordinate(t, n0, n1, n2, n3) = n0 * pow((1 - t), 3) + 3 * n1 * t * pow((1 - t), 2) + 3 * n2 * pow(t, 2) * (1 - t) + n3 * pow(t, 3);

function bezier_point(t, p0, p1, p2, p3) =
    [
        bezier_coordinate(t, p0[0], p1[0], p2[0], p3[0]),
        bezier_coordinate(t, p0[1], p1[1], p2[1], p3[1]),
        bezier_coordinate(t, p0[2], p1[2], p2[2], p3[2])
    ];

function bezier_curve(t_step, p0, p1, p2, p3) = [for(t = [0: t_step: 1 + t_step]) bezier_point(t, p0, p1, p2, p3)];

module bezier_vase(bottom_radius, curve_width, thickness, inner_vase, p0, p1, p2, p3, fn, t_step) {
    $fn = fn;

    points = bezier_curve(t_step, p0, p1, p2, p3);

    // bezier_curve as a wall
    a_step = 360/fn;
    x_offset = bottom_radius + curve_width / 2;

    for(a = [0: a_step : 360 - a_step]) {
        rotate([90, 0, a])
            translate([x_offset, 0, 0])
                linear_extrude(thickness, center = true)
                    polyline(points, curve_width);
    }

    // bottom
    half_curve_width = curve_width / 2;
    bottom_scale = (bottom_radius + half_curve_width) / bottom_radius;

    translate([0, 0, -half_curve_width])
        linear_extrude(half_curve_width, scale = bottom_scale)
            circle(bottom_radius);

    if(inner_vase == "YES") {
        rotate_extrude()
            translate([bottom_radius, 0, 0])
                polyline(points, thickness);
    }
}

bezier_vase(
    bottom_radius,
    curve_width,
    thickness,
    inner_vase,
    [px0, py0, 0],
    [px1, py1, 0],
    [px2, py2, 0],
    [px3, py3, 0],
    fn,
    t_step
);

```


[User]
I'm looking to create a parametric model of a classic hotel key fob in OpenSCAD. I've got a decent idea of the shape, it's like a rounded rhombus with a hole for a key ring, and I'd like to be able to control its dimensions. I also want to be able to easily toggle between having details on one side only, or on both sides.

Here's a more detailed breakdown of what I'm envisioning:

**Core Shape:**

*   The base shape should be essentially a rounded rectangle (or a rhombus with rounded corners as my example describes).
*   I need parameters for the *total length* and *total width* of the fob.
*   The corners should be rounded, and I need a parameter to set the *radius* of those corner curves.
*   The main body of the fob should have a *thickness* parameter.

**Edge Details:**

*   Around the perimeter of the fob, I want a raised edge or bead. This edge should have a *bead radius* parameter.
*   I'd like the option for this edge detail to appear on either one side or both sides of the fob's thickness.

**Ribs/Ridges:**

*   On at least one face of the fob, I'd like to add some raised ribs or ridges.
*   These ridges should be parallel to the short sides, and I need a parameter for their *radius*.
*   They should be spaced out evenly along the long axis, and I need to be able to control how many there are.
*   I need to be able to control whether these ribs appear on just one side or on both sides of the fob.
*   I also need to be able to control the placement of the first and last ridge along the curved edges of the fob.

**Key Ring Hole:**

*   The fob should have a hole for a key ring.
*   I need a parameter for the *radius* of this hole.
*   I want a raised ring or "eyelet" around this key ring hole, similar in style to the perimeter bead. This "eyelet" should also have a radius parameter.

**Toggles and Parameters:**

*   I need a boolean parameter to switch between one-sided and two-sided detailing (ridges and bead/eyelet).
*   I'd like to set all of the dimensions (total length, width, curve radius, ridge radius, bead radius, thickness, key ring radius, eyelet radius).

**Libraries:**

I don't anticipate needing any external libraries for this model, but let me know if you think otherwise. I think that the math for positioning the various elements is best left within the core model, rather than needing the functionality of a geometry library, for example.

I'd prefer separate OpenSCAD files for different variants (one-sided and two-sided).

Could you generate the OpenSCAD code for these, please?

[Assistant]
hotel_key_fob.scad:
```
//
// OpenSCAD file to create an old school hotel key fob.
//
// Original code created October-November, 2016 by Allan M. Estes, Dearborn, MI.
// Posted to Thingiverse December 1, 2016. All rights reserved.
//
// Initial values are set to approximate size and shape of a classic hotel key
// fob but can be customized somewhat (ymmv, no limiting or validation of parameters).
// Can also be set to generate one-sided (beads and ridges only on one side) or
// two-sided (like original mass-produced fob).

$fn=45;

total_length = 90;
total_width  = 45;
curve_radius = 12;
ridge_radius =  0.5;
bead_radius  =  0.8;

twoside = 1;            // 0 = one sided, 1 = two

thick = 2;              // thickness of main shape

cir_r = curve_radius - bead_radius;
cir_x_off = total_length/2 - cir_r - bead_radius;
cir_y_off = total_width/2 - cir_r - bead_radius;

kr_hole_r = 2.2 + ridge_radius;  // hole for key ring

//ia1 = atan(cir_y_off/cir_x_off) * 2;
//slen = cir_y_off/sin(ia1/2);
slen = sqrt(cir_x_off*cir_x_off + cir_y_off*cir_y_off);
ia1 = acos(cir_x_off/slen) * 2;
ia2 = 180-ia1;

// Module definitions:

// a crude stop gap solution to the fact that my version of OpenSCAD
// ignores the angle on rotate_extrude
module my_rotate_extrude(angle) {
    intersection() {
        rotate_extrude()
        children(0);
        translate([0,0,-50])
        linear_extrude(height=100)
        polygon([[0,0],[100,0],[100,100],[cos(angle)*100,sin(angle)*100]]);
    }
}

// generic modules to copy and move (translate) an object or to copy and rotate
module duplicate_t(v) {
    children();
    translate(v) children();
}

module duplicate_r(v1,v2) {
    children();
    rotate(v1,v2) children();
}

// do the duplicate and rotate only if passed a "true" condition
module cond_duplicate_r(cond,vec) {
    if (cond)
        duplicate_r(vec)
        children(0);
    else
        children(0);
}

// this is the shape that is extruded to give the band/beading around the edges/holes
module edge_profile(bead_r) {
    hull() {
        translate([0,thick/2,0])
        circle(r=bead_r);
        if (twoside)
            translate([0,-thick/2,0])
            circle(r=bead_r);
        else
            translate([0,-thick/2+bead_r,0])
            circle(r=bead_r);
    }
}

// End of variable/module definitions. Main "code" begins here

// band/beading around main shape - generate on half of the band and then
// duplicate and rotate to complete
duplicate_r([0,0,180]) {
    // band around the curve on the X-axis
    translate([cir_x_off,0,0])
    rotate([0,0,-ia2/2])
    my_rotate_extrude(angle=ia2)
    translate([cir_r,0,0]) edge_profile(bead_radius);
    // straight section between curves
    translate([cir_x_off+sin(ia1/2)*cir_r,cos(ia1/2)*cir_r,0])
    rotate([90,0,-90-ia1/2])
    linear_extrude(height=slen)
    edge_profile(bead_radius);
    // band around the curve on the Y-axis
    translate([0,cir_y_off,0])
    rotate([0,0,90-(ia1/2)])
    my_rotate_extrude(angle=ia1)
    translate([cir_r,0,0]) edge_profile(bead_radius);
    // 2nd straight section to complete the half
    translate([-cir_x_off-sin(ia1/2)*cir_r,cos(ia1/2)*cir_r,0])
    rotate([0,0,90+ia1/2])
    rotate([90,0,0])
    linear_extrude(height=slen)
    edge_profile(bead_radius);
}

difference() {
    union() {

        // ribs/ridges
        cond_duplicate_r(twoside,[0,180,0])
        duplicate_r([0,0,180])
        translate([cir_x_off-.2,0,thick/2])
        intersection(){
            cylinder(r=cir_r,h=thick,center=true);
            rotate([90,0,0]) {
                /// the spacing on these should be based on radius...
                duplicate_t([4,0,0])
                duplicate_t([2,0,0])
                translate([1,0,0])
                cylinder(r=ridge_radius,h=cir_r*2,center=true);
                translate([9,0,0])
                cylinder(r=ridge_radius,h=cir_r*2,center=true);
            }
        }

        // main shape (basically a rhombus with rounded corners)
        translate([0,0,-thick/2])
        linear_extrude(height=thick)
        hull() {
            translate([0,cir_y_off,0])
            circle(r=cir_r);
            translate([0,-cir_y_off,0])
            circle(r=cir_r);
            translate([cir_x_off,0,0])
            circle(r=cir_r);
            translate([-cir_x_off,0,0])
            circle(r=cir_r);
        }
    }

    // through hole for key ring
    translate([cir_x_off+cir_r/2,0,0])
    cylinder(r=kr_hole_r,h=(thick*2),center=true);
}

// "eyelet" around key ring hole
translate([cir_x_off+cir_r/2,0,0])
rotate_extrude(angle=360)
translate([kr_hole_r,0,0]) edge_profile(ridge_radius);

```


[User]
I'm looking to generate a customizable standoff for mounting electronics, particularly for quadcopters, but it should be broadly applicable. I need to be able to adjust the hole spacing for both inner and outer sets of feet, the diameter of the feet, the hole diameter within the feet, and the overall height of each set of feet.

Specifically, I want a design with:

*   **Outer Feet:**
    *   Adjustable square hole spacing.
    *   Adjustable foot diameter.
    *   Adjustable hole diameter through the foot (for mounting).
    *   Adjustable total foot height.
*   **Inner Feet (Optional):**
    *   Adjustable square hole spacing.
    *   Adjustable foot diameter.
    *   Adjustable hole diameter through the foot.
    *   Adjustable total foot height.
    *   Adjustable rotation angle of the inner feet relative to the outer feet.

*   **Base Plate (Optional):**
    *   Adjustable thickness. If set to zero, I'd want just the standoffs without any connecting arms (e.g. just tubular standoff feet).
    *   Filleted edges between the arms connecting the feet.
    *   Adjustable fillet radius and number of steps for smoother curves.

*   **Optional Center Hole:**
    *   Adjustable diameter for a center hole, primarily for weight savings.

I'd like the output to be a single configurable OpenSCAD file, with clear, descriptive parameter names for easy customization. I am already aware that using fillets might make the rendering slow, so there's no need to add performance advice. I need to be able to use this in the Thingiverse Customizer, so please make sure that it doesn't rely on too many fancy or uncommon functions, if possible. I don't need any special library dependencies for this.

[Assistant]
configurable_square_standoff.scad:
```
//hole spacing for outer standoff feet (side length of the desired square)
outer_hole_spacing = 30;
//diameter of outer standoff feet
outer_foot_diameter = 6;
//diameter of hole in outer standoff feet (better to print with smaller hole, and drill out to precise diameter)
outer_hole_diameter = 2;
//total height of outer standoffs (ie, very bottom of outer standoff to very top of outer standoff)
outer_foot_height = 2.5;

//hole spacing for inner standoff feet (side length of the desired square) - can be ignored if no inner standoff is needed
inner_hole_spacing = 20.5;
//diameter of inner standoff feet - can be ignored if no inner standoff is needed
inner_foot_diameter = 6;
//diameter of hole in inner standoff feet (better to print with smaller hole, and drill out to precise diameter)
inner_hole_diameter = 2;
//total height of outer standoffs - if no inner standoff is needed, set this to zero
inner_foot_height = 5;
//angle of inner standoff from outer standoff - typically set to 0 (inner are in line with outer), or 45 (inner are turned 45 degrees to outer)
inner_angle = 0;

//thickness of the arms and base - this is included in the foot height (so a 4mm foot height, with a 1mm base, will result in 3mm of clearance) Set to zero if only want to print washers
base_plate_thickness = 1.5;

//optional hole in center of body for weight savings - set to zero, if no center hole desired
center_hole_diameter = 8;

//radius of fillet between arms
arm_fillet_radius = 8;
//number of faces used in creating the fillet between arms - larger = finer, but much slower to generate and render (5-10 usually gives good results)
arm_fillet_steps = 10;

module configurable_square_standoff() {
    $fn=40;

    difference() {
        union() {
            //inner and outer feet
            feet(outer_hole_spacing, outer_foot_diameter, outer_foot_height, outer_hole_diameter, 0);
            feet(inner_hole_spacing, inner_foot_diameter, inner_foot_height, inner_hole_diameter, inner_angle);

            //arms (if any)
            if (base_plate_thickness > 0) {
                fillet(r=arm_fillet_radius, steps=arm_fillet_steps) {
                    arm(outer_hole_spacing, outer_foot_diameter, outer_foot_height, outer_hole_diameter, 0, base_plate_thickness);
                    arm(outer_hole_spacing, outer_foot_diameter, outer_foot_height, outer_hole_diameter, 90, base_plate_thickness);
                    arm(inner_hole_spacing, inner_foot_diameter, inner_foot_height, inner_hole_diameter, inner_angle, base_plate_thickness);
                    arm(inner_hole_spacing, inner_foot_diameter, inner_foot_height, inner_hole_diameter, inner_angle + 90, base_plate_thickness);
                }
            }
        }

        //holes through feet
        foot_holes(outer_hole_spacing, outer_foot_diameter, outer_foot_height, outer_hole_diameter, 0);
        foot_holes(inner_hole_spacing, inner_foot_diameter, inner_foot_height, inner_hole_diameter, inner_angle);

        //center hole
        tcyl(0, 0, center_hole_diameter, base_plate_thickness);
    }
}

module feet(side_len, foot_dia, foot_ht, hole_dia, angle) {
    t = side_len/2;
    rotate([0, 0, angle]) {
        union() {
            //standoff feet
            tcyl(-t, -t, foot_dia, foot_ht);
            tcyl(-t, t, foot_dia, foot_ht);
            tcyl(t, -t, foot_dia, foot_ht);
            tcyl(t, t, foot_dia, foot_ht);
        }
    }
}

module foot_holes(side_len, foot_dia, foot_ht, hole_dia, angle) {
    t = side_len/2;
    rotate([0, 0, angle]) {
        union() {
            //standoff feet
            tcyl(-t, -t, hole_dia, foot_ht);
            tcyl(-t, t, hole_dia, foot_ht);
            tcyl(t, -t, hole_dia, foot_ht);
            tcyl(t, t, hole_dia, foot_ht);
        }
    }
}

module arm(side_len, foot_dia, foot_ht, hole_dia, angle, base_ht) {
    t = side_len/2;
    rotate([0, 0, angle]) {
        hull() {
            tcyl(-t, -t, foot_dia, base_ht);
            tcyl(t, t, foot_dia, base_ht);
        }
    }
}

module tcyl(x, y, dia, ht) {
    translate([x, y, 0]) {
        cylinder(d=dia, h=ht);
    }
}

//this is the awesome ClothBotCreations fillet utility, distributed under the GNU General Public License
// see: https://github.com/clothbot/ClothBotCreations/blob/master/utilities/fillet.scad
// vvvvvvv start of ClothBotCreations fillet utililty vvvvvvv

module fillet(r=1.0,steps=3,include=true) {
  if(include) for (k=[0:$children-1]) {
	children(k);
  }
  for (i=[0:$children-2] ) {
    for(j=[i+1:$children-1] ) {
	  fillet_two(r=r,steps=steps) {
	    children(i);
	    children(j);
	    intersection() {
		  children(i);
		  children(j);
	    }
	  }
    }
  }
}

module fillet_two(r=1.0,steps=3) {
  for(step=[1:steps]) {
	hull() {
	  render() intersection() {
		children(0);
		offset_3d(r=r*step/steps) children(2);
	  }
	  render() intersection() {
		children(1);
		offset_3d(r=r*(steps-step+1)/steps) children(2);
	  }
	}
  }
}

module offset_3d(r=1.0) {
  for(k=[0:$children-1]) minkowski() {
	children(k);
	sphere(r=r,$fn=8);
  }
}
// ^^^^^^^ start of ClothBotCreations fillet utililty ^^^^^^^

configurable_square_standoff();
```