[User]
I'd like to create a parametric OpenSCAD design for making 3D printable letters that can be mounted flush to a wall using push pins or small screws. I'm envisioning a few key features based on a design I saw:

1.  **Letter Creation:** The design should allow me to specify the text, font, and size of the letter. It should also allow for rounded top edges (like a pill shape) to give a softer look and feel.

2.  **Hanging Holes:** It needs to have recessed holes that can accommodate standard push-pins or small screws, so the letter can be mounted flush to the wall. The design should be easily modified to change the hole size, quantity, and location for each letter. The holes should have a counterbore for the screw head or pin head. There should also be a small amount of material between the head of the pin/screw and the wall to keep them from pulling out.

3.  **Customization:** I'd like to be able to adjust the letter's thickness and depth of the screw/pushpin holes independently of the total thickness of the letter, as well as the radius of the rounded edges. I also need to be able to choose the number of faces/segments for the rounded edges and letters (for detail and preview).

4.  **Print Bed Check:** It would be great if I could see a visual representation of a printer's build plate in the preview, so I can easily check the letter size against my printer bed before printing. It'd be nice to be able to pick between circular and rectangular print beds too, and specify their dimensions.

5.  **Preview Mode:** It's important to have a preview mode that uses less processing power for quickly checking the overall layout and positioning of the holes, even if the preview doesn't show all the details. Full detail should still be available for final rendering to STL.

6.  **Color Options:** While not essential for functionality, it would be useful to have color options for the letter and the hanging hole recesses to visualize individual parts more clearly.

I would like the design to be fully parametric, so that I can change any of these parameters through the OpenSCAD Customizer.

I am not interested in relying on any external libraries. The design should be completely self-contained within the OpenSCAD files you provide.

[Assistant]
push_pin_wall_letters_v0.2.scad:
```
// Wall Letter Generator
// Pushpin edition
//
// Author: Erick Neilson 247generator@thingiverse - Copyright 2018
//
// This code generates big letters with rounded top edges that you can use push-pins
// to flush mount to drywall. The holes need to be moved into good positions manually, and
// keeping at least two aligned makes installation easier, especially for asymmetric fonts.
//
// Change the hole size to work with a small screw instead of push-pin in order to fit them in smaller fonts.
//
// The hanging holes appear to be completely open in fast preview to make them easier to
// position correctly, but they will render properly in the full resolution STL.
//
// pardon the mess.
//
//

/* [Main Settings] */

// this reduces curve complexity by a quarter for fast preview and shows the full holes for locating - remember to turn off preview before clicking Create Thing
PREVIEW_mode = 0.25; //[0.25:Fast Preview Mode,1:Full Resolution Render Mode]
// the default view is the bottom (back), so to quickly check the top (front):
 flip_over = 0; //[0:Normal Rotation,1:Flip Upside Down]
 rotation = flip_over * [0,180,0];

// (single letter) some fonts can use codes like \u263A (smile) see https://en.wikipedia.org/wiki/Miscellaneous_Symbols
text ="W";

/* [Positions and Colors] */

// how many hanging holes
holes = 4;//[0:4]

letter_color = "Gold";
letter_x = 0;
letter_y = 0;

color1 = "Pink";
hole1_x = 68;
hole1_y = 40;

color2 = "Lime";
hole2_x = -64;
hole2_y = 40;

color3 = "Turquoise";
hole3_x = -34;
hole3_y = -47;

color4 = "Red";
hole4_x = 37;
hole4_y = -47;

/* [Additional Options] */

// Google fonts
font = "Liberation Sans"; // [Arial, ABeeZee, Abel, Abril Fatface, Aclonica, Acme, Actor, Adamina, Advent Pro, Aguafina Script, Akronim, Aladin, Aldrich, Alef, Alegreya, Alegreya SC, Alegreya Sans, Alegreya Sans SC, Alex Brush, Alfa Slab One, Alice, Alike, Alike Angular, Allan, Allerta, Allerta Stencil, Allura, Almendra, Almendra Display, Almendra SC, Amarante, Amaranth, Amatic SC, Amethysta, Amiri, Amita, Anaheim, Andada, Andika, Angkor, Annie Use Your Telescope, Anonymous Pro, Antic, Antic Didone, Antic Slab, Anton, Arapey, Arbutus, Arbutus Slab, Architects Daughter, Archivo Black, Archivo Narrow, Arimo, Arizonia, Armata, Artifika, Arvo, Arya, Asap, Asar, Asset, Astloch, Asul, Atomic Age, Aubrey, Audiowide, Autour One, Average, Average Sans, Averia Gruesa Libre, Averia Libre, Averia Sans Libre, Averia Serif Libre, Bad Script, Balthazar, Bangers, Basic, Battambang, Baumans, Bayon, Belgrano, Belleza, BenchNine, Bentham, Berkshire Swash, Bevan, Bigelow Rules, Bigshot One, Bilbo, Bilbo Swash Caps, Biryani, Bitter, Black Ops One, Bokor, Bonbon, Boogaloo, Bowlby One, Bowlby One SC, Brawler, Bree Serif, Bubblegum Sans, Bubbler One, Buda, Buenard, Butcherman, Butterfly Kids, Cabin, Cabin Condensed, Cabin Sketch, Caesar Dressing, Cagliostro, Calligraffitti, Cambay, Cambo, Candal, Cantarell, Cantata One, Cantora One, Capriola, Cardo, Carme, Carrois Gothic, Carrois Gothic SC, Carter One, Catamaran, Caudex, Caveat, Caveat Brush, Cedarville Cursive, Ceviche One, Changa One, Chango, Chau Philomene One, Chela One, Chelsea Market, Chenla, Cherry Cream Soda, Cherry Swash, Chewy, Chicle, Chivo, Chonburi, Cinzel, Cinzel Decorative, Clicker Script, Coda, Coda Caption, Codystar, Combo, Comfortaa, Coming Soon, Concert One, Condiment, Content, Contrail One, Convergence, Cookie, Copse, Corben, Courgette, Cousine, Coustard, Covered By Your Grace, Crafty Girls, Creepster, Crete Round, Crimson Text, Croissant One, Crushed, Cuprum, Cutive, Cutive Mono, Damion, Dancing Script, Dangrek, Dawning of a New Day, Days One, Dekko, Delius, Delius Swash Caps, Delius Unicase, Della Respira, Denk One, Devonshire, Dhurjati, Didact Gothic, Diplomata, Diplomata SC, Domine, Donegal One, Doppio One, Dorsa, Dosis, Dr Sugiyama, Droid Sans, Droid Sans Mono, Droid Serif, Duru Sans, Dynalight, EB Garamond, Eagle Lake, Eater, Economica, Eczar, Ek Mukta, Electrolize, Elsie, Elsie Swash Caps, Emblema One, Emilys Candy, Engagement, Englebert, Enriqueta, Erica One, Esteban, Euphoria Script, Ewert, Exo, Exo 2, Expletus Sans, Fanwood Text, Fascinate, Fascinate Inline, Faster One, Fasthand, Fauna One, Federant, Federo, Felipa, Fenix, Finger Paint, Fira Mono, Fira Sans, Fjalla One, Fjord One, Flamenco, Flavors, Fondamento, Fontdiner Swanky, Forum, Francois One, Freckle Face, Fredericka the Great, Fredoka One, Freehand, Fresca, Frijole, Fruktur, Fugaz One, GFS Didot, GFS Neohellenic, Gabriela, Gafata, Galdeano, Galindo, Gentium Basic, Gentium Book Basic, Geo, Geostar, Geostar Fill, Germania One, Gidugu, Gilda Display, Give You Glory, Glass Antiqua, Glegoo, Gloria Hallelujah, Goblin One, Gochi Hand, Gorditas, Goudy Bookletter 1911, Graduate, Grand Hotel, Gravitas One, Great Vibes, Griffy, Gruppo, Gudea, Gurajada, Habibi, Halant, Hammersmith One, Hanalei, Hanalei Fill, Handlee, Hanuman, Happy Monkey, Headland One, Henny Penny, Herr Von Muellerhoff, Hind, Hind Siliguri, Hind Vadodara, Holtwood One SC, Homemade Apple, Homenaje, IM Fell DW Pica, IM Fell DW Pica SC, IM Fell Double Pica, IM Fell Double Pica SC, IM Fell English, IM Fell English SC, IM Fell French Canon, IM Fell French Canon SC, IM Fell Great Primer, IM Fell Great Primer SC, Iceberg, Iceland, Imprima, Inconsolata, Inder, Indie Flower, Inika, Inknut Antiqua, Irish Grover, Istok Web, Italiana, Italianno, Itim, Jacques Francois, Jacques Francois Shadow, Jaldi, Jim Nightshade, Jockey One, Jolly Lodger, Josefin Sans, Josefin Slab, Joti One, Judson, Julee, Julius Sans One, Junge, Jura, Just Another Hand, Just Me Again Down Here, Kadwa, Kalam, Kameron, Kantumruy, Karla, Karma, Kaushan Script, Kavoon, Kdam Thmor, Keania One, Kelly Slab, Kenia, Khand, Khmer, Khula, Kite One, Knewave, Kotta One, Koulen, Kranky, Kreon, Kristi, Krona One, Kurale, La Belle Aurore, Laila, Lakki Reddy, Lancelot, Lateef, Lato, League Script, Leckerli One, Ledger, Lekton, Lemon, Liberation Sans, Liberation Serif, Libre Baskerville, Life Savers, Lilita One, Lily Script One, Limelight, Linden Hill, Lobster, Lobster Two, Londrina Outline, Londrina Shadow, Londrina Sketch, Londrina Solid, Lora, Love Ya Like A Sister, Loved by the King, Lovers Quarrel, Luckiest Guy, Lusitana, Lustria, Macondo, Macondo Swash Caps, Magra, Maiden Orange, Mako, Mallanna, Mandali, Marcellus, Marcellus SC, Marck Script, Margarine, Marko One, Marmelad, Martel, Martel Sans, Marvel, Mate, Mate SC, Maven Pro, McLaren, Meddon, MedievalSharp, Medula One, Megrim, Meie Script, Merienda, Merienda One, Merriweather, Merriweather Sans, Metal, Metal Mania, Metamorphous, Metrophobic, Michroma, Milonga, Miltonian, Miltonian Tattoo, Miniver, Miss Fajardose, Modak, Modern Antiqua, Molengo, Molle, Monda, Monofett, Monoton, Monsieur La Doulaise, Montaga, Montez, Montserrat, Montserrat Alternates, Montserrat Subrayada, Moul, Moulpali, Mountains of Christmas, Mouse Memoirs, Mr Bedfort, Mr Dafoe, Mr De Haviland, Mrs Saint Delafield, Mrs Sheppards, Muli, Mystery Quest, NTR, Neucha, Neuton, New Rocker, News Cycle, Niconne, Nixie One, Nobile, Nokora, Norican, Nosifer, Nothing You Could Do, Noticia Text, Noto Sans, Noto Serif, Nova Cut, Nova Flat, Nova Mono, Nova Oval, Nova Round, Nova Script, Nova Slim, Nova Square, Numans, Nunito, Odor Mean Chey, Offside, Old Standard TT, Oldenburg, Oleo Script, Oleo Script Swash Caps, Open Sans, Open Sans Condensed, Oranienbaum, Orbitron, Oregano, Orienta, Original Surfer, Oswald, Over the Rainbow, Overlock, Overlock SC, Ovo, Oxygen, Oxygen Mono, PT Mono, PT Sans, PT Sans Caption, PT Sans Narrow, PT Serif, PT Serif Caption, Pacifico, Palanquin, Palanquin Dark, Paprika, Parisienne, Passero One, Passion One, Pathway Gothic One, Patrick Hand, Patrick Hand SC, Patua One, Paytone One, Peddana, Peralta, Permanent Marker, Petit Formal Script, Petrona, Philosopher, Piedra, Pinyon Script, Pirata One, Plaster, Play, Playball, Playfair Display, Playfair Display SC, Podkova, Poiret One, Poller One, Poly, Pompiere, Pontano Sans, Poppins, Port Lligat Sans, Port Lligat Slab, Pragati Narrow, Prata, Preahvihear, Press Start 2P, Princess Sofia, Prociono, Prosto One, Puritan, Purple Purse, Quando, Quantico, Quattrocento, Quattrocento Sans, Questrial, Quicksand, Quintessential, Qwigley, Racing Sans One, Radley, Rajdhani, Raleway, Raleway Dots, Ramabhadra, Ramaraja, Rambla, Rammetto One, Ranchers, Rancho, Ranga, Rationale, Ravi Prakash, Redressed, Reenie Beanie, Revalia, Rhodium Libre, Ribeye, Ribeye Marrow, Righteous, Risque, Roboto, Roboto Condensed, Roboto Mono, Roboto Slab, Rochester, Rock Salt, Rokkitt, Romanesco, Ropa Sans, Rosario, Rosarivo, Rouge Script, Rozha One, Rubik, Rubik Mono One, Rubik One, Ruda, Rufina, Ruge Boogie, Ruluko, Rum Raisin, Ruslan Display, Russo One, Ruthie, Rye, Sacramento, Sahitya, Sail, Salsa, Sanchez, Sancreek, Sansita One, Sarala, Sarina, Sarpanch, Satisfy, Scada, Scheherazade, Schoolbell, Seaweed Script, Sevillana, Seymour One, Shadows Into Light, Shadows Into Light Two, Shanti, Share, Share Tech, Share Tech Mono, Shojumaru, Short Stack, Siemreap, Sigmar One, Signika, Signika Negative, Simonetta, Sintony, Sirin Stencil, Six Caps, Skranji, Slabo 13px, Slabo 27px, Slackey, Smokum, Smythe, Sniglet, Snippet, Snowburst One, Sofadi One, Sofia, Sonsie One, Sorts Mill Goudy, Source Code Pro, Source Sans Pro, Source Serif Pro, Special Elite, Spicy Rice, Spinnaker, Spirax, Squada One, Sree Krushnadevaraya, Stalemate, Stalinist One, Stardos Stencil, Stint Ultra Condensed, Stint Ultra Expanded, Stoke, Strait, Sue Ellen Francisco, Sumana, Sunshiney, Supermercado One, Sura, Suranna, Suravaram, Suwannaphum, Swanky and Moo Moo, Syncopate, Tangerine, Taprom, Tauri, Teko, Telex, Tenali Ramakrishna, Tenor Sans, Text Me One, The Girl Next Door, Tienne, Tillana, Timmana, Tinos, Titan One, Titillium Web, Trade Winds, Trocchi, Trochut, Trykker, Tulpen One, Ubuntu, Ubuntu Condensed, Ubuntu Mono, Ultra, Uncial Antiqua, Underdog, Unica One, UnifrakturCook, UnifrakturMaguntia, Unkempt, Unlock, Unna, VT323, Vampiro One, Varela, Varela Round, Vast Shadow, Vesper Libre, Vibur, Vidaloka, Viga, Voces, Volkhov, Vollkorn, Voltaire, Waiting for the Sunrise, Wallpoet, Walter Turncoat, Warnes, Wellfleet, Wendy One, Wingdings, Wire One, Work Sans, Yanone Kaffeesatz, Yantramanav, Yellowtail, Yeseva One, Yesteryear, Zeyada]
// font size
letter_size = 120;
// 60+ makes curvy letters look smoother
rendered_letter_detail = 32; //[32:2:128]
// added space above the screw hole recess to the top surface of the letter
top_shell = 1.5;
// radius of the ball used to round the edges
rounded_corners = 4.0;
// How curved or polygonal the above rounded edges are
rendered_corner_detail = 32; //[32:2:96]
// for hanging on a wall with screws or pushpins in the wall
screw_head_opening = 9.5;
// make this a bit smaller than the pin to retain pushpins / tacks
screw_shaft_opening = 1.4;
// also most of the total letter thickness
screw_depth = 12.7;
// the amount of plastic keeping the screw or pin from pulling out (between the wall and head)
screw_retention_depth = 0.8;
// hanging hole complexity
rendered_curve_detail = 32; //[32:2:96]

/* [Printer Build Plate] */

// The letter is not automatically centered on the bed, this section is just intended for checking the relative font size.
print_bed_notes = 0; // [0:Q and W tend to be largest letters for checking,1:Also avoid creating it flipped over,2:use Normal Rotation in the first section]
// Check the size of the letter against your printer bed size
show_print_bed = 0; // [0:Hide the print bed,1:Show the circular print bed, 2:Show the rectangular print bed]
circular_bed_diameter = 230;
rectangular_bed_x = 200;
rectangular_bed_y = 280;
bed_height = 2;

/* [Hidden] */

// thingiverse customizer: show us the back by default
// preview[view:north, tilt:bottom]
// equivalent to this in OpenSCAD:
// $vpr = [ 175, 0.00, 180 ] ;

//  $vpr = [ 60, 0.00, 45 ] ;  // This appears to be the default rotational view of thingiverse customizer.

detail_reduction=PREVIEW_mode;
letter_detail=rendered_letter_detail*detail_reduction;
corner_detail=rendered_corner_detail*detail_reduction;
curve_detail=rendered_curve_detail*(detail_reduction*2);

//
// END OF PARAMETERS
//
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
//
// START OF BUILD
//

// Add up all the internal parts height and then subtract the rounded corners which get added on in all directions except -Z (down)
letter_height = screw_retention_depth + screw_depth + top_shell - rounded_corners;

// Rotate everything to make it easier to see the hole positions

rotate (rotation) {

// printer build plate size & shape preview mechanism, mostly for thingiverse customizer since it has no measurements.

if (show_print_bed == 1) {
    translate ([0,0,-(bed_height/2)-0.1])
    %cylinder (r=circular_bed_diameter/2,h=bed_height,$fn=64, center = true);
}
if (show_print_bed == 2) {
    translate ([0,0,-(bed_height/2)-0.1])
    %cube ([rectangular_bed_x,rectangular_bed_y,bed_height], center = true);
}

difference () { translate ([letter_x,letter_y,0])color (letter_color)  letter(text);
    if (holes > 0) {
        translate ([hole1_x,hole1_y,0])color (color1) hanger_hole (screw_depth,screw_head_opening,screw_shaft_opening,screw_retention_depth);}
    if (holes > 1) {
        translate ([hole2_x,hole2_y,0])color (color2) hanger_hole (screw_depth,screw_head_opening,screw_shaft_opening,screw_retention_depth);}
    if (holes > 2) {
        translate ([hole3_x,hole3_y,0])color (color3) hanger_hole (screw_depth,screw_head_opening,screw_shaft_opening,screw_retention_depth);}
    if (holes > 3) {
        translate ([hole4_x,hole4_y,0])color (color4) hanger_hole (screw_depth,screw_head_opening,screw_shaft_opening,screw_retention_depth);}
}

}

//
// END OF BUILD
//
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
//
// START OF MODULES
//

module hanger_hole (screw_depth,screw_head_opening,screw_shaft_opening,screw_retention_depth) {
    $fn = curve_detail;
    rotate ([0,0,-90]){
// main hanging screw/tack hole
        translate ([0,0,-0.1]) {
            cylinder (h=screw_depth+0.2, r=screw_head_opening/2);
        }

// hanging screw/tack recessed inner slot
        preview_depth_adjust = round(PREVIEW_mode) * screw_retention_depth-0.1;
        hull (){
            translate ([0,0,preview_depth_adjust]) {cylinder (h=(screw_depth)+0.2, r=(screw_head_opening/2));}
            translate ([-screw_head_opening,0,preview_depth_adjust]){cylinder (h=(screw_depth)+0.2, r=(screw_head_opening/2));}
        }
// hanging screw/tack shaft slot
        hull (){
            translate ([0,0,-0.1]) {cylinder (h=(screw_depth)+0.2, r=(screw_shaft_opening/2) );}
            translate ([-screw_head_opening/1.25,0,-0.1]){cylinder (h=(screw_depth)+0.2, r=(screw_shaft_opening/2) );}
        }
    }
}

module letter(l) {
    letter_fn = letter_detail;
    rounding_fn = corner_detail;
    minkowski () {
        difference () { sphere (r=rounded_corners, $fn=rounding_fn); translate ([0,0,-rounded_corners]) cube (rounded_corners*2,center = true);}
        linear_extrude(height = letter_height) {
            text(l, size = letter_size, font = font, halign = "center", valign = "center", $fn = letter_fn);
        }
    }
}

```


[User]
I'm looking to design a parametric chess set using OpenSCAD. I'd like each piece to scale based on a single parameter representing the size of a square on the chessboard. I've got some basic ideas about the shapes I want to use but could use your help formalizing it.

Specifically, I need the following pieces:

*   **King:** A base with a cross on top. The base should be a rounded square, and the cross can be made by adding two perpendicular rectangular prisms on top of the rounded base.
*   **Queen:** Similar rounded base as the king, but with 8 small spheres arranged in a circle around the top.
*   **Bishop:** A rounded base with a sphere and truncated cone on top. Also, the bottom of the cone should be cut off with a slightly smaller cylinder.
*   **Knight:** A base with a cylindrical shape for the "horse head" with an extra bump near the bottom.
*   **Rook:** A base with four small squares on the top in each corner.
*   **Pawn:** A base with a sphere on top.

All dimensions should be scaled relative to a single input parameter called `Taille`, which represents the length of the square base. I'd also like to be able to select which piece I see or if I see all of the pieces with a variable `Vue` that should default to "King". It should have values of "Roi", "Reine", "Fou", "Cavalier", "Tour", "Pion", and "Tout" to select different views.
The shapes should be mostly built out of hulling and translating. I think I can manage to adapt what I have with these new pieces if necessary but the generation would save me a lot of time.

[Assistant]
chessset.scad:
```
Taille=100;
RC=Taille*75/100;
PC=Taille/2;
Vue="Roi";//[Roi,Reine,Fou,Cavalier,Tour,Pion,Tout]
if(Vue=="Tout")
{
translate([-Taille*4,0,0])
roi();
translate([-Taille*3,0,0])
reine();
translate([-Taille*2,0,0])
fou();
translate([-Taille*1,0,0])
cavalier();
tour();
translate([Taille*1,0,0])
pion();}

if(Vue=="Roi"){roi();}
if(Vue=="Reine"){reine();}
if(Vue=="Fou"){fou();}
if(Vue=="Cavalier"){cavalier();}
if(Vue=="Tour"){tour();}
if(Vue=="Pion"){pion();}

module roi()
{
  union()
  {
  hull()
  {
    cube([RC,RC,0.00001],center=true);
    translate([0,0,Taille*2.5])
    cube([RC,RC/4,0.00001],center=true)  ;
  }
  hull()
  {
    cube([RC,RC,0.00001],center=true);
    translate([0,0,Taille*2.5])
    cube([RC/4,RC,0.00001],center=true)  ;
  }
}
}
module reine()
{
  union()
  {
    {
      for(i=[1:8])
      {
        hull()
        {
        cube([RC,RC,0.00001],center=true);
        translate([sin(360/8*i)*(RC/2-11),cos(360/8*i)*(RC/2-11),Taille*2.5-RC/2])
        {
          sphere(d=22,$fn=64);
        }
        }
      }
    }
  }
}

module fou()
{
  union()
  {
  difference()
  {
    hull()
    {
      cube([RC,RC,0.00001],center=true);
      translate([0,0,Taille*2-RC/2])
      {
        sphere(r = RC/4,$fn=64);
        translate([0, 0, RC/4 * sin(RC/3)])
        cylinder(h = RC/3, r1 =  RC/4 * cos(RC/3), r2 = 0,$fn=64);
      }
    }
    translate([0,0,Taille*2-RC/2])
    difference()
    {
      cylinder(d=RC/3,h=Taille*2);
      cylinder(d=RC/4,h=Taille*3);
    }
  }
}
}
module cavalier()
{
  union()
  {
  hull()
  {
  cube([RC,RC,0.00001],center=true);
  translate([0,RC/4,Taille*2-RC/2])
  rotate([90,0,90])
  scale([0.5,1,1])
  cylinder(d=RC,h=RC/16,$fn=64,center=true);
  }
  hull()
  {
  translate([0,RC/4,Taille*2-RC/2])
  rotate([90,0,90])
  scale([0.5,1,1])
  cylinder(d=RC/4*3,h=RC/4,$fn=64,center=true);

  translate([0,-RC/4,Taille*2-RC])
  rotate([90,0,90])
  scale([0.5,0.5,1])
  cylinder(d=RC/4*3,h=RC/8,$fn=64,center=true);
  }
}

}

module tour()
{
  union()
  {
  hull()
  {
    cube([RC,RC,0.00001],center=true);
    translate([RC/3,RC/3,Taille*2.25])
    cube([RC/3,RC/3,0.00001],center=true);
  }

  hull()
  {
    cube([RC,RC,0.00001],center=true);
    translate([RC/3,-RC/3,Taille*2.25])
    cube([RC/3,RC/3,0.00001],center=true);
  }
  hull()
  {
    cube([RC,RC,0.00001],center=true);
    translate([-RC/3,RC/3,Taille*2.25])
    cube([RC/3,RC/3,0.00001],center=true);
  }

  hull()
  {
    cube([RC,RC,0.00001],center=true);
    translate([-RC/3,-RC/3,Taille*2.25])
    cube([RC/3,RC/3,0.00001],center=true);
  }
}

}

module pion()
{
  hull()
  {
    cube([PC,PC,0.00001],center=true);
    translate([0,0,Taille*1.25-PC/2])
    sphere(d=PC,$fn=64);
  }
}
```


[User]
Hey, I'm looking for some help creating a parametric design in OpenSCAD for a tamper station. I've got some existing designs and information, and I'd like to make this really flexible.

Basically, the station is a cylindrical block with a cutout on one side to hold a portafilter handle. I need to be able to control the overall height, wall thickness, the inner diameter of the cylinder, the diameter of the handle groove, and the depth of the handle groove. I would like for it to use the BOSL2 library for features such as fillets.

The main cylinder should have its height, `height`, and its outer diameter, `outer_diameter` (which is equal to `inner_diameter + 2 * wall_thickness`). There will be a centered inner cylinder that is a hollow cut with diameter `inner_diameter`. The handle groove should be positioned on the side of the cylinder and it will be a combination of a rectangular cut and a cylindrical cut. The rectangular cut has a width equal to `handle_diameter` and a depth of `handle_groove_depth` (with respect to the top surface), and runs the full length of the cylinder depth. The cylindrical cut will extend the rectangular cut downwards and have radius equal to `handle_diameter / 2`. This cylinder should also run the full depth of the cylinder, and should be tangent to the bottom of the rectangular cut. I'd like a fillet (using the `fillet` module in BOSL2) at the top of the handle groove, where the rectangular and cylindrical cuts meet. The fillet will need to be applied to both the inner and outer edges of the groove.

I'll need to define parameters at the top of the file like so:
*   `resolution` - for smoothness.
*   `fillet_radius` - radius of the fillet.
*   `height` - total height of the station.
*   `wall_thickness` - thickness of the material.
*   `inner_diameter` - inner diameter of the station's cylinder.
*   `handle_diameter` - diameter of the portafilter handle to be held.
*   `handle_groove_depth` - depth of the groove to hold the handle from the top surface.

I am looking for a single parametric SCAD file, please.

[Assistant]
Tamper-Station.scad:
```
resolution = 100;
fillet_radius=5;

// (new) dimensions for quickmill
//

height = 53;
wall_thickness = 5;
inner_diameter=70.5;
handle_diameter=19;
handle_groove_depth=28;

// (old) dimensions for quickmill
// height = 50;
// wall_thickness = 5;
// inner_diameter=70;
// handle_diameter=19;
// handle_groove_depth=28;

// dimensions for gaggia
// height = 54;
// wall_thickness = 5;
// inner_diameter=70.5;
// handle_diameter=19;
// handle_groove_depth=32;

$fn = resolution;
outer_diameter=inner_diameter+2*wall_thickness;

//fillet cutter
module  fillet()
{
    translate(v = [handle_diameter/2+fillet_radius, 0, height/2-fillet_radius])
        rotate(a=[-90,180,0])
            difference() {
                cube(size = [fillet_radius,fillet_radius,outer_diameter/2],center=false);
                cylinder(h=outer_diameter/2,r=fillet_radius,center=false);
            }
}

rotate(a=[0,0,180])
difference() {
    // outer cylinder
    cylinder(h=height,r=outer_diameter/2,center=true);

    // inner cylinder
    cylinder(h=height,r=inner_diameter/2,center=true);

    // handle groove - upper part
    cubesize=[handle_diameter,outer_diameter/2,handle_groove_depth-handle_diameter/2];
    translate(v = [-cubesize[0]/2, 0, height/2-cubesize[2]])
        cube(size = cubesize, center = false);
    // handle groove - lower part
    translate(v = [0, 0, height/2+handle_diameter/2-handle_groove_depth])
        rotate(a=[-90,0,0])
            cylinder(h=outer_diameter/2,r=handle_diameter/2,center=false);

    // fillets for handle groove
    fillet();
    mirror([1,0,0]) fillet();
}

```


[User]
I need a parametric OpenSCAD design for a TV mount that will hold a streaming device. The mount should be a case that snugly holds the device with a bracket that attaches to the TV using a standard VESA mount (specifically, the 100mm mounting standard).

The design needs to be configurable with several parameters:

*   `device_width`, `device_depth`, and `device_height`: These define the dimensions of the streaming device itself.
*   `wall_thickness`: The thickness of the case walls.
*   `mounting_hole_diameter`: The diameter of the holes for mounting to the TV.
*   `top_bezel_width`: The width of the bezel on the top edge of the case. This allows a lip on the top, but can be set to a large value to completely enclose the top.
*   `port_bezel_width`: The width of the bezel surrounding a cutout for ports on the back of the device. Again, can be set to large to avoid the cutout.
*   `port_cutout_width`, `port_cutout_height`: Allows for a rectangular cutout for ports. This is an alternative to the `port_bezel_width`.
*  `port_cutout_width_offset`, `port_cutout_height_offset`: Allows for customization of the position of the rectangular port cutout relative to the device's back surface.

The case should have an internal cutout for the device, a top bezel (or complete top), and a cutout in the back for ports. There should be an option for the simpler, bezel port cutout, and a custom sized and positioned port cutout.

The mounting bracket should be separate from the case itself and utilize a single, center mounting point. It should use a 100mm VESA mount hole pattern. The bracket should be designed to allow for the case to be slid over the bracket in a vertical orientation. The bracket should have a circular mounting post that fits into a correspondingly shaped hole on the case for vertical alignment.

I would like the design to be modular; I think a separate file for each the mounting bracket and case would work well.

I'd also like it to be designed using the BOSL2 library; specifically I think `hull`, `difference`, and `translate` are likely to be used.

[Assistant]
streaming_device_tv_mount.scad:
```
//Streaming Device TV Mount

//by replayreb
//GPL License

//https://www.thingiverse.com/thing:3255257

//(in mm)
wall_thickness = 2;

mounting_hole_diameter = 6.5;

device_width = 160;
//(depth = length of device from front to back)
device_depth = 99;
device_height = 26.5;

//(Enter value greater than width of device if you want top completely enclosed)
top_bezel_width = 3.5;

//(Use if you want centered cutout for ports, otherwise enter value greater than width of device and customize cutout below)
port_bezel_width = 3.5;

//(Use next four values to customize port cutout size and offset, otherwise zero these out)
port_cutout_width = 0;
port_cutout_height = 0;

//(experiment here to offset port cutout)
port_cutout_width_offset = 0;
port_cutout_height_offset = 0;

//Make mount
difference(){
	//Case
	cube([device_width+wall_thickness*2,device_height+wall_thickness*2,device_depth+wall_thickness*2], center = true);

	//Device cutout
	translate([0, 0, wall_thickness])
	cube([device_width,device_height,device_depth], center = true);

	//Top cutout
	translate([0, -device_height/2, top_bezel_width+wall_thickness])
	cube([device_width-top_bezel_width*2,device_height,device_depth], center = true);

	//Uniform port cutout using bezel value
    translate([0, 0, -device_depth/2])
	cube([device_width-port_bezel_width*2, device_height-port_bezel_width*2, device_depth], center = true);

    //Custom port cutout
	translate([port_cutout_width_offset, port_cutout_height_offset, -device_depth/2])
	cube([port_cutout_width,port_cutout_height,device_depth], center = true);
}

//Make mounting bracket
difference(){
    hull(){
        difference(){
            cube([device_width+wall_thickness*2,device_height+wall_thickness*2,device_depth+wall_thickness*2], center = true);

            translate([0, -wall_thickness, 0])
            cube([device_width+wall_thickness*2,device_height+wall_thickness*2,device_depth+wall_thickness*2], center = true);
        }

        difference(){
            translate([0, 0, device_depth/2+12.7])
            rotate([90, 0, 0])
            cylinder(device_height+wall_thickness*2, d=25.4, center = true);

            translate([0, -wall_thickness, device_depth/2])
            cube([device_width+wall_thickness*2,device_height+wall_thickness*2,device_depth+wall_thickness*2], center = true);
        }
    }

    translate([0, 0, device_depth/2+18-mounting_hole_diameter/2])
    rotate([90, 0, 0])
    cylinder(device_height*2, d=mounting_hole_diameter, center = true);
}
```


[User]
I'm looking to create a finger-mounted pen holder, and I need it to be highly customizable. I've seen some existing designs, but they don't quite offer the flexibility I need.

Essentially, I want a ring that fits on a finger, and attached to that ring should be a holder for a pen, angled away from the finger. I need to be able to adjust a number of things. For the ring itself, I need to control the:
 * Length (height) of the ring
 * Inner diameter of the ring
 * The size of a side cutout on the ring
 * Thickness of the ring material

For the pen holder part, I want to control:
 * Length (height) of the pen holder
 * Inner diameter of the pen holder
 * Size of a side cutout on the pen holder
 * Thickness of the pen holder material
 * The angle at which the pen holder is rotated relative to the ring
 * The distance from the center of the ring to the center of the pen holder

I'd prefer that the model be constructed using a `hull()` function to create a smooth transition between the ring and the pen holder parts. Also, I'd like to use a difference to create the holes and cutouts. Could you generate a parametric OpenSCAD file that allows me to adjust all of these parameters? No libraries are necessary. Also, please make sure the base of the ring is flush with the build plate and the entire object is trimmed at the top as well. I'm picturing a kind of cylinder base with the rest of the object built off it.

[Assistant]
Finger_Pen_Holder_V2.0_OpenSCAD.scad:
```

/////////////////////////////////////////////////////////////////
//Remix by W. Englert 12/02/2018/////////////////////////////////
//Finger_Pen_Holder_V2.0_OpenSCAD////////////////////////////////
//Maker's Making Change /////////////////////////////////////////
//http://www.makersmakingchange.com//////////////////////////////
//Remix of Finger Pen Holder (Vertical) by makersmakingchange////
//Published on February 28, 2018/////////////////////////////////
//www.thingiverse.com/thing:2802074//////////////////////////////

/*[variables]*/

//Length of the Ring
Ring_L = 18.0; // [10:0.5:40]

//Ring hole size (mm)
Ring_HD = 21.0; // [10:0.5:40]

//Ring Edge Cutout (mm)
Ring_C =9.0; // [0:0.5:40]

//Thickness of the Ring (mm)
Ring_T = 2.5; // [2:0.1:4]

//Length of the pen holder (mm)
Pen_L = 18; // [10:0.5:40]

//Pen hole size (mm)
Pen_HD = 10.1; // [1:0.1:40]

//Pen Edge Cutout
Pen_C = 9.5; // [0:0.1:40]

//Thickness of Pen holder
Pen_T = 2.5; // [2:0.1:4]

//Angle of Pen holder (degrees)
Pen_A =45; // [0:1:359]

//Additional distance from ring to pen
Distance = 0;// [0:0.5:40]

/*[Hidden]*/
//Total width for top and bottom trimming
Total_W = Ring_HD+(Ring_T*2)+(Pen_HD*2)+(Pen_T*2)+(Distance*2);

//facet Number
$fn=200;

//////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////
//Renders
difference(){
Outer_Structure();
holes();
}

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

//modules

module Outer_Structure (){
//Ring Outer
    cylinder(d1=Ring_T+Ring_HD,d2=Ring_T+Ring_HD, h=Ring_L);

//Ring and Pen outer structure
hull(){
//hull attachment point on the ring
    cylinder(d1=Ring_T+Ring_HD,d2=Ring_T+Ring_HD, h=Pen_L);

// Pen holder Outer
    translate([(Ring_HD*0.5)+(Pen_HD*0.5)+(Ring_T*0.5)+(Pen_T*0.5)+Distance,0,(Pen_L*.5)])rotate([Pen_A,0,0]){
    cylinder(d1=Pen_HD + Pen_T,d2=Pen_HD + Pen_T,h=Pen_L, center=true);}
}
}
module holes(){
// Ring Hole
    cylinder(d1=Ring_HD, d2=Ring_HD, h=Ring_L);

// Pen Hole
    translate([(Ring_HD*0.5)+(Pen_HD*0.5)+(Ring_T*0.5)+(Pen_T*0.5)+Distance,0,(Pen_L*.5)])rotate([Pen_A,0,0]){
    cylinder(d1=Pen_HD,d2=Pen_HD,h=Pen_L*2, center=true);}

// Cutout for Pen Hole
    translate([(Ring_HD*0.5)+(Pen_HD)+(Ring_T*0.5)+(Pen_T*0.5)+Distance,0,Pen_L*.5])rotate([Pen_A,0,0]){
    cube([Pen_HD,Pen_C,Pen_L*2],center=true);}

// Cutout for Ring Hole
    translate([-Ring_HD,-Ring_C*.5,0])cube([Ring_HD,Ring_C,Ring_L]);

// Trim Bottom of device Flush with Table
    translate([0,0,-Ring_L])cylinder(d1=Total_W,d2=Total_W,h=Ring_L);

// Trim Top of device Flush
    translate([0,0,Ring_L])cylinder(d1=Total_W,d2=Total_W,h=Ring_L);
}

/////////////////////////////////////////////////////////////////
//Remix by W. Englert 12/02/2018/////////////////////////////////
//Finger_Pen_Holder_V2.0_OpenSCAD////////////////////////////////
//Maker's Making Change /////////////////////////////////////////
//http://www.makersmakingchange.com//////////////////////////////
//Remix of Finger Pen Holder (Vertical) by makersmakingchange////
//Published on February 28, 2018/////////////////////////////////
//www.thingiverse.com/thing:2802074//////////////////////////////

```


[User]
I'd like to create a parametric model rocket body tube transition generator using OpenSCAD. I'm envisioning something that can handle single, double, triple, triple-flat, quadruple, and quintuple configurations, just like the `transition_factory.scad` I've seen online.

Ideally, the tool should allow me to specify the following parameters:

*   `Front_Tube_Outside_Diameter`: The outside diameter of the front body tube in mm.
*   `Front_Tube_Inside_Diameter`: The inside diameter of the front body tube in mm.
*   `Transition_Height`: The height of the transition in mm.
*   `Rear_Tube_Outside_Diameter`: The outside diameter of the rear body tubes in mm.
*   `Rear_Tube_Inside_Diameter`: The inside diameter of the rear body tubes in mm.
*   `Rear_Cluster_Configuration`: An integer value to select the transition type (1 for single, 2 for double, 3 for triple, 6 for triple flat, 4 for quadruple, and 5 for quintuple).

The output should create a solid body that transitions between the front and rear tube configurations. I'd also like for there to be a small lip/sleeve at the front and rear so the parts can be easily mated to other tubes.  Could you please help me generate the necessary OpenSCAD file, or files, to accomplish this? I don't need any specific library dependencies.

[Assistant]
transition_factory.scad:
```
// transition_factory.scad
// library for parametric model rocket body tube transitions with clustering
// Author: Tony Z. Tonchev, Michigan (USA)
// last update: December 2018

/* [Parameters] */

// Front Body tube OUTSIDE diameter (in mm)
Front_Tube_Outside_Diameter = 19; //

// Front Body tube INSIDE diameter (in mm)
Front_Tube_Inside_Diameter = 18; //

// Transition height (in mm)
Transition_Height = 40; //

// Rear Body tube OUTSIDE diameter (in mm)
Rear_Tube_Outside_Diameter = 19; //

// Rear Body tube INSIDE diameter (in mm)
Rear_Tube_Inside_Diameter = 18; //

Rear_Cluster_Configuration = 3; //[1:Single,2:Double,3:Triple,6:Triple Flat,4:Quadruple,5:Quintuple]

/* [Hidden] */

TZT_FOR=Front_Tube_Outside_Diameter/2;
TZT_FIR=Front_Tube_Inside_Diameter/2;
TZT_ROR=Rear_Tube_Outside_Diameter/2;
TZT_RIR=Rear_Tube_Inside_Diameter/2;
TZT_HGT=Transition_Height;
TZT_CTR=Rear_Cluster_Configuration;
$fn=100;

union () {
    if (TZT_CTR==1) {
        translate ([0,0,TZT_HGT]) mirror ([0,0,1]) TZT_Sleave (TZT_FOR,TZT_FIR,0);
        difference () {
            cylinder (TZT_HGT,TZT_ROR,TZT_FOR);
            translate ([0,0,-TZT_HGT*.01]) cylinder (TZT_HGT*1.02,TZT_RIR*.9,TZT_FIR*.9);
        }
        TZT_Sleave (TZT_ROR,TZT_RIR,1);
    } else if (TZT_CTR==2) {
        TZT_Cluster (0,180,180,TZT_ROR);
    } else if (TZT_CTR==3) {
        TZT_Cluster (0,120,240,TZT_ROR*1.15);
    } else if (TZT_CTR==4) {
        TZT_Cluster (0,90,270,TZT_ROR*1.4);
    } else if (TZT_CTR==5) {
        TZT_Cluster (0,72,288,TZT_ROR*1.7);
    } else if (TZT_CTR==6) {
        translate ([0,0,TZT_HGT]) mirror ([0,0,1]) TZT_Sleave (TZT_FOR,TZT_FIR,0);
        difference () {
            for (TZT_i=[-1:1:1]) {
                hull () {
                    translate ([0,0,TZT_HGT]) cylinder (.1,TZT_FOR,TZT_FOR);
                    translate ([0,TZT_i*TZT_ROR*2,0]) cylinder (.1,TZT_ROR,TZT_ROR);
                }
                translate ([0,TZT_i*TZT_ROR*2,0]) TZT_Sleave (TZT_ROR,TZT_RIR,1);
            }
            for (TZT_i=[-1:1:1]) {
                hull () {
                    translate ([0,0,TZT_HGT]) cylinder (.3,TZT_FIR*.9,TZT_FIR*.9,true);
                    translate ([0,TZT_i*TZT_ROR*2,0]) cylinder (.3,TZT_RIR*.9,TZT_RIR*.9,true);
                }
            }
        }
    }
}
module TZT_Sleave (TZT_TOR,TZT_TIR,TZT_MNT) {
    difference () {
        union () {
            translate ([0,0,-TZT_TOR+TZT_TIR]) cylinder (TZT_TOR-TZT_TIR,TZT_TIR,TZT_TOR);
            translate ([0,0,-TZT_TIR*2]) cylinder (TZT_TIR*2,TZT_TIR,TZT_TIR);
        }
        translate ([0,0,-TZT_TIR*2.01]) cylinder (TZT_TIR*2.02,TZT_TIR*.9,TZT_TIR*.9);
    }
    if (TZT_MNT==1) {
        translate ([0,0,-TZT_TIR*1.8]) {
            for (TZT_i=[0:90:90]) {
                rotate ([0,90,TZT_i]) cylinder (TZT_TIR*1.9,TZT_TIR*.1,TZT_TIR*.1,true);
                rotate ([0,90,TZT_i]) translate ([TZT_TIR*.1,0,0]) cube ([TZT_TIR*.2,TZT_TIR*.2,TZT_TIR*1.9],true);
            }
        }
    }
}
module TZT_Cluster (TZT_ia,TZT_ib,TZT_ic,TZT_OFST) {
    translate ([0,0,TZT_HGT]) mirror ([0,0,1]) TZT_Sleave (TZT_FOR,TZT_FIR,0);
    difference () {
        for (TZT_i=[TZT_ia:TZT_ib:TZT_ic]) {
            hull () {
                translate ([0,0,TZT_HGT]) cylinder (.1,TZT_FOR,TZT_FOR);
                rotate (TZT_i,0,0) translate ([0,TZT_OFST,0]) cylinder (.1,TZT_ROR,TZT_ROR);
            }
            rotate (TZT_i,0,0) translate ([0,TZT_OFST,0]) TZT_Sleave (TZT_ROR,TZT_RIR,1);
        }
        for (TZT_i=[TZT_ia:TZT_ib:TZT_ic]) {
            hull () {
                translate ([0,0,TZT_HGT]) cylinder (.3,TZT_FIR*.9,TZT_FIR*.9,true);
                rotate (TZT_i,0,0) translate ([0,TZT_OFST,0]) cylinder (.3,TZT_RIR*.9,TZT_RIR*.9,true);
            }
        }
    }

}

```


[User]
I'm looking to create a foldable, pluggable tea light holder that can be easily mailed in an envelope as a Christmas greeting card. I've seen a few tea light designs, but nothing quite like what I'm envisioning. I'd like to design it to be printed in two colors using a dual extruder or multi-material printer, but it should also be printable in a single color with the text engraved as a hole.

The basic concept is a square frame with text on each side. The design should include these key elements:

1.  **Base:** A square base with a central recessed area for the tea light and slots around the edge for the side panels to plug into. Also, it will need some small, round peg-like protrusions around the edge as well as corresponding keyhole slots on the side panels. Finally, the base should have a cylindrical hole in the center as well.
2.  **Side Panels:** Four identical side panels that plug into the base, forming the sides of the tea light holder. Each side panel should have a rectangular frame, with a cutout in the center. The text will either be printed on these or cut out from them. Also, each side panel will have two puzzle piece style connectors on the sides that plug into the base, as well as a small "nose" at the top edge. Finally, each side panel will have small slots near the top edge for better air circulation.
3.  **Text:** Configurable text on each side panel. The text, font, font size and line spacing should be configurable.

Here are some of the parameters I need to control:

*   `sidelength`: The overall side length of the base.
*   `height`: The overall height of the assembled tea light holder.
*   `text1`, `text2`, `text3`, `text4`: The text strings for each of the four sides.
*   `textsize`:  A list of text sizes for each text string.
*   `font`:  A list of fonts for each text string.
*   `fontthickness`: The extrusion thickness of the text (or depth of cut if single color).
*    `windowthicknes`: Thickness of the side panels.
*   `borderthickness`: The thickness of the frame on the side panels.
*   `borderwidth`: The width of the space between the frame and the inner part of the side panels
*   `bottomheight`: The height of the base.
*   `clearance`: A clearance value for the puzzle piece connectors.
*    `linespacingfactor`: factor used for calculating distance between text lines.

I want to be able to switch between printing the text (for multi-material) and printing the rest of the holder with a variable named `what_to_print` that has possible values of "text" and "rest".

I'd like this all to be done parametrically in OpenSCAD. I think I need to use the `linear_extrude`, `text`, and `hull` modules, plus `difference`, `translate` and `rotate` but I'm not sure what libraries I should use. I would also need a "puzzle" module that creates the interlocking connectors and a "multiLine" module that renders the text to be used with multi-line strings. The assembly is meant to be done by the recipient, so it should be easy to put together. Could you help me generate the necessary OpenSCAD files?

[Assistant]
pluggable_candle_v2.2.scad:
```
sidelength=60;
height=55;
//text1=["Wesołych","Świąt"]; //polish
//text1=["Счастливого","Рождества"]; //russian
// text1=["Merry", "Christmas"]; //english
// text1=["Joyeux", "Noël"]; //french
// text1=["Feliz", "Navidad"]; //castellano
text1=["frohe","Weihnachten"]; //german
text2=["einen","guten", "Rutsch"];
text3=["ein gutes", "neues Jahr",];
text4=["viel Glück", "&", "Gesundheit"];
// textsize for text1, text2, text3, text4
textsize=[6.5,7.5,7.5,6.5];
// font for text1, text2, text3, text4
font=["Pacifico","Pacifico","Pacifico","Pacifico"]; // [Arial,Gloria Hallelujah, Pacifico, Courgette, Permanent Marker, Domine:Domine bold, Ultra, Bevan, Corben:Corben bold, Coustard:Coustard bold]
// print text or rest?
what_to_print="rest";//[text,rest]

//less important parameters
borderthickness=2;
borderwidth=4;
windowthicknes=0.4;
fontthickness=0.2;
bottomheight=3;
clearance=0.15;
linespacingfactor=1.5;
$fn=20;

//calculations
alltext=[text1,text2,text3,text4];
framewide=sidelength-borderthickness;
frameheight=height-bottomheight;
windowwide=framewide-borderwidth*2;
windowheight=frameheight-2*borderwidth;
bottomsidelength=sidelength;

//printing
if (what_to_print == "rest"){
  bottom(bottomsidelength,bottomheight,framewide,borderthickness);
  for (i=[0:1:3]){
    rotate ([0,0,i*90]){
      //translate([borderthickness/2,sidelength/2,bottomheight]){
      translate([borderthickness/2,sidelength/2+5,0]){
        rotate([0,0,0]){
          difference(){
            frame(framewide,frameheight,windowwide,windowheight,borderthickness,borderwidth,windowthicknes,i);
            maketext(frameheight,i);
          }
        }
      }
    }
  }
}else{
  for (i=[0:1:3]){
    rotate ([0,0,i*90]){
      translate([borderthickness/2,sidelength/2+5,0]){
        maketext(frameheight,i);
      }
    }
  }
}

// Modules

module bottom(sl,bh,fw,bt){
  difference(){
    translate([0,0,bh/2])cube([sl,sl,bh],center=true);
    for (i=[0:90:359]){
      rotate ([0,0,i]){
        translate([-fw*0.3+bt/2,sl/2-bt/2-1,bh])sphere(r=bt/2,$fn=30);
        translate([fw*0.3+bt/2,sl/2-bt,bh])rotate([0,0,90])rotate([0,90,0])puzzle(borderthickness+clearance,clearance);
        translate([-3,sl/2-bt-3,-0.01])cube([6,bt+3+0.1,1]);
        translate([-3,sl/2-bt-3,-0.01])cube([6,2,10]);
      }
    }
    translate([0,0,1])cylinder(r=21,h=5);
  }
}

module frame(fw,fh,ww,wh,bt,bw,wt,i){
  difference(){
    translate([-fw/2,0,0])cube([fw,fh,bt]);
    translate([-fw/2+bw,bw,wt])cube([ww,wh,bt]);
    translate([-fw/2,fh/3,-0.01])puzzle(borderthickness+0.02,clearance);
    translate([-fw/2,fh/3*2,-0.01])puzzle(borderthickness+0.02,clearance);
    translate([-fw/2-0.01,fh-2-clearance/2,-0.01])rotate([90,0,0])linear_extrude(height=2+clearance)polygon([[0,0],[0.6+clearance,0],[0,0.6+clearance]]);
  }
  translate([fw/2,fh/3,bt])rotate([0,-90,0])puzzle(borderthickness+0.02,0);
  translate([fw/2,fh/3*2,bt])rotate([0,-90,0])puzzle(borderthickness+0.02,0);
  color("red")translate([fw/2,fh-2,bt])rotate([90,0,0])linear_extrude(height=2)polygon([[-0.8,0],[0,0],[0,0.8]]);
  translate([fw/2-bw,0,bt])cube([bw-bt,fh,1]);
  translate([-fw*0.3,0,bt/2+1])sphere(r=bt/2,$fn=30);
  translate([fw*0.3,0,0])rotate([0,0,-90])puzzle(borderthickness,0);
}

module maketext(fh,i){
  translate([0,(len(alltext[i])*textsize[i]/2)+fh/2,0])multiLine(alltext[i], textsize[i], fontthickness, font[i]);
}

module puzzle(bt,cl,$fn=30){
  rotate([0,0,-90]){
    linear_extrude(height = bt, convexity = 10, slices = 20, scale = 1.0){
      offset(r=cl){
        difference(){
          movement=0.58;
          union(){
            hull(){
              translate([-1,2])circle(1);
              translate([1,2])circle(1);
            }
            translate([-1.5,-1])square([3,3]);
          }
          translate([-1.65,movement])circle(movement);
          translate([1.65,movement])circle(movement);
         }
      }
    }
  }
}

module multiLine(lines, tsize, thickness, fonttitel){
  mirror([1,0,0]){
    color("red")linear_extrude(height = thickness) {
      union(){
        for (i = [0 : len(lines)-1])
          translate([0 , -i * (tsize * linespacingfactor), 0 ]) text(lines[i], font = fonttitel, size = tsize, direction = "ltr",  spacing = 1, valign = "center", halign = "center");
      }
    }
  }
}

```


[User]
I'd like to design a parametric support piece for a marble run, and I'm hoping you can help me with the OpenSCAD code. It's essentially two cylinders stacked on top of each other, with some material removed to create a hollow part and a slot.

The bottom cylinder has a height, `lower_height`, and a radius, `lower_radius`. The top cylinder has a height, `upper_height`, and a radius, `upper_radius`. There's an overlap where the two cylinders meet, defined by `overlap`. The inner walls of each cylinder have a thickness, defined by `lower_wallwidth` for the bottom and `upper_wallwidth` for the top, creating a hollow space inside. There's also a vertical slot cut out of the side, starting at the bottom of the overlap area and running to the top of the upper cylinder. This slot has a width, `slotwidth`.

All the dimensions will be in millimeters, and I want to be able to adjust all of them using the customizer in OpenSCAD. Can you generate the necessary OpenSCAD code for this parametric design? I am not using any external libraries.

[Assistant]
marble_piece.scad:
```
lower_height = 51.5; // mm, height of bottom part
lower_radius=30/2; // mm, outer radius of bottom part
upper_height = 15.5; // mm, height of top part
upper_radius=27/2; // mm, outer radius of top part
overlap = 9; // mm
slotwidth = 4; // mm
lower_wallwidth = 1.3; // mm
upper_wallwidth = 1.3; // mm

difference() {
union() {
    // These are the two cylinders
    translate ([0,0,0]) cylinder(r=lower_radius,h=lower_height, $fn=60);
    translate ([0,0,lower_height]) cylinder(r=upper_radius,h=upper_height, $fn=60);
}
// Below are the parts to cut out
union() {
    // Inside the bottom cylinder (up to the overlap)
    translate ([0,0,-1]) cylinder(r=lower_radius-lower_wallwidth,h=lower_height+1-overlap,$fn=60);
    // Inside the top cylinder
    translate ([0,0,lower_height-1]) cylinder(r=upper_radius-upper_wallwidth,h=upper_height+2,
    $fn=60);
    // The overlap (a truncated cone)
    translate ([0,0,lower_height-overlap]) cylinder(r1=lower_radius-lower_wallwidth,r2=upper_radius-upper_wallwidth,h=overlap, $fn=60);
    // the slot starts at the bottom of the "overlap"
    translate([lower_radius-upper_wallwidth*3,-slotwidth/2,lower_height-overlap]) cube([upper_wallwidth*3,slotwidth,upper_height+overlap+1]);
    }
}

```


[User]
Hi, I'm looking to create a parametric OpenSCAD model for a levitator stand, similar to the one I built based on the Make Magazine project. I've attached the original SCAD file for reference.

The core idea is to have two holders for ultrasonic transducers, with an adjustable gap between them. The transducers need to be held securely and allow for some fine vertical adjustment. The original design uses 6-32 machine screws and nuts for this adjustment.

Here's a breakdown of the key requirements:

*   **Parametric Gap:** The distance between the transducer holders needs to be easily adjustable via a variable (e.g., `gap`).  The current design uses `15.875` as a starting point, but that should be configurable.
*   **Transducer Holder:** The holders need to securely grip transducers, with a cylindrical shape.  The inner diameter is important here (currently `.625*in + .03*in`).  Let's call that `Dia`.  I'd like to make that a parameter too
*   **Vertical Adjustment:**  The design needs to incorporate screw holes and clearance for a 6-32 screw and nut. The holes should be placed to allow for vertical adjustment of the transducers. Let's call the screw diameter and nut diameter `screw_diameter` and `nut_diameter`.
*   **Base Support:** The stand needs a stable base to sit on. It should be wide enough to provide stability. It can have an attachment tab to fix it to other modules.
*  **Material Thickness:**  I'd like to control the general thickness of the stand (currently denoted by `t`) with a parameter.
*   **Mounting Hole**:  I want to be able to specify the diameter of the mounting hole `Dhole3`. And the diameter of the smaller mounting hole `Dhole2`
*   **Length of the Transducer Holding Arms:** I would like this to be parametric, let's call this `Length`

I think that's everything. Could you please generate the necessary OpenSCAD files to create this? Thanks!

[Assistant]
levetation_holder.scad:
```
//
// Ultrasonic Levetator Stand
//

//Gap Between Holders
gap=15.875;   // default "15.875"

/* [Hidden] */

$fn=50;
in=25.4;

// Run stand module
rotate(100)stand();

module stand()
{
    Length=.5*in;
    Dia = .625*in + .03*in;
    //gap=.625*in;
    throat=1*in;
    wt=.25*in;
    t=.06*in;
    tab=.3*in;
    H_stand=.75*in;

    Dhole1=.15*in;
    Dhole2=.2*in;
    Dhole3=Dhole2;

    difference()
    {
        union()
        {
            half();
            mirror([0,1,0])half();

            translate([0,-gap/2-Length-H_stand,0])
            {
                cube([throat+wt,H_stand,t]);
                cube([throat+wt,t,Dia+t*2]);
                translate([throat,0,0])
                    cube([t,H_stand+gap+Length*2,Dia+t*2]);
            }
        }

        translate([throat,-gap/2-Length-H_stand/2,Dia/2])
            rotate([0,90,0])
                cylinder(d=Dhole3,h=1*in,center=true);
        translate([throat,gap/2+Length/2,Dia/2])
            rotate([0,90,0])
                cylinder(d=Dhole3,h=1*in,center=true);
        translate([throat*2/3,-gap/2-Length-H_stand,Dia*2/3])
            rotate([90,0,0])
                cylinder(d=Dhole2,h=1*in,center=true);
    }

    module half()
    {
        difference()
        {
            union()
            {
            rotate([-90,0,0])
                translate([0,-Dia/2-t,0])
                {
                    difference()
                    {
                        union()
                        {
                            translate([0,-Dia/2-tab/2,gap/2+Length/2])
                                cube([5*t,tab,Length/2],center=true);
                            translate([0,0, gap/2])
                                cylinder(d=Dia+t*2,h=Length);
                        }
                        translate([0,0, gap/2-1])
                            cylinder(d=Dia,h=Length+2);
                        translate([0,-Dia/2-tab/2-t/2,gap/2+Length/2])
                            rotate([0,90,0])
                                cylinder(d=Dhole1,h=100,center=true);
                    }
                }

            }
            translate([0,0,Dia+tab/2]) cube([t,100,Dia],center=true);

        }
        translate([0, gap/2, 0]) cube([throat,Length,t]);
        translate([throat,0, 0]) cube([wt,gap/2+Length,.06*in]);

    }
}

```


[User]
Hey! I'm looking to get a parametric fastener design made in OpenSCAD. I've seen a few similar ones, but I'd like one that is specifically tailored to my needs.

Essentially, I need a snap-fit fastener, kind of like a plastic rivet, with a head on one side and a retainer on the other. The design should be configurable with at least two parameters: the distance between the head and the retainer, and the shaft diameter of the fastener. I'd like to be able to adjust those easily in the OpenSCAD customizer.

I'm imagining it having a bit of a barb or bump feature on the retainer to provide that snap fit, and maybe some slight tapers to make insertion and retention a bit smoother.

I’d love for this design to be usable as a generic fastener in all sorts of projects around the house, so the robustness and ease of printing is important. I've included a SCAD file for inspiration and to show you roughly what I'm after. I'm not sure if it's best as one file, or as two or more files, but I'll leave that to your expertise.

I don't need any specific libraries, just vanilla OpenSCAD functionality will be perfect.

Thanks in advance!

[Assistant]
fastener.scad:
```
// tzt-A-fastener.scad
// library for parametric fastener, snap, rivet, grommet, anchor, insert
// Author: Tony Z. Tonchev, Michigan (USA)
// last update: December 2018

// Distance between fastener head and retainer (in mm)
Fastener_Height = 10;

// Fastener shaft diameter (in mm)
Fastener_Diameter = 9.5;

/* [Hidden] */

$fn=100;
TZT_SR=Fastener_Diameter/2;
TZT_SL=Fastener_Height;

translate ([TZT_SR*1.8,0,0]) TZT_FastB();
translate ([-TZT_SR*1.8,0,0]) TZT_FastA();

module TZT_FastB () {
    difference () {
        cylinder (TZT_SR,TZT_SR*1.7,TZT_SR*1.7,$fn=10);
        cylinder (TZT_SR*3,TZT_SR*1.05,TZT_SR*1.05,true);
        translate ([0,0,TZT_SR*.6]) cylinder (TZT_SR*.21,TZT_SR*1.25,TZT_SR*1.05);
        translate ([0,0,TZT_SR*.4]) cylinder (TZT_SR*.21,TZT_SR*1.25,TZT_SR*1.25);
        translate ([0,0,TZT_SR*.2]) cylinder (TZT_SR*.21,TZT_SR*1.05,TZT_SR*1.25);
    }
}
module TZT_FastA () {
    difference () {
        union () {
            intersection () {
                difference () {
                    union () {
                        cylinder (TZT_SL+TZT_SR*2,TZT_SR,TZT_SR);
                        translate ([0,0,TZT_SL+TZT_SR*1.6]) cylinder (TZT_SR*.2,TZT_SR*1.2,TZT_SR);
                        translate ([0,0,TZT_SL+TZT_SR*1.4]) cylinder (TZT_SR*.2,TZT_SR*1.2,TZT_SR*1.2);
                        translate ([0,0,TZT_SL+TZT_SR*1.2]) cylinder (TZT_SR*.2,TZT_SR,TZT_SR*1.2);
                    }
                    translate ([0,0,TZT_SL/2+TZT_SR*2.3]) cube ([TZT_SR*.6,TZT_SR*4,TZT_SL+TZT_SR*2],true);
                    translate ([0,0,TZT_SR*1.3]) rotate ([90,0,0]) cylinder (TZT_SR*4,TZT_SR*.3,TZT_SR*.3,true);
                }
                translate ([0,0,(TZT_SL+TZT_SR*2)/2]) cube ([TZT_SR*2.4,TZT_SR*1.9,TZT_SL+TZT_SR*2.1],true);
            }
            cylinder (TZT_SR,TZT_SR*1.7,TZT_SR*1.7,$fn=10);
        }
        cylinder ((TZT_SL+TZT_SR)*3,TZT_SR*.6,TZT_SR*.6,true);
    }
}

```


[User]
I'm looking to design a parametric dihedral connector for a kite, and I'd like to use OpenSCAD. I've got some basic dimensions in mind, but I'd like the design to be flexible enough so that I can easily adjust it for different spar sizes and arm lengths.

Here’s the basic idea: It'll have a central "spine" section with a hole for the main spar, and two angled "arms" coming off it, each with their own holes for spars. There will also be a connecting web between the arms. I need to be able to adjust the diameter of all of the spar holes independently, the length of the spine section, the length of the arms, the depth and thickness of the connecting web. It should be symmetrical with the arms at a 15 degree angle relative to the spine. I've included a previous attempt of my own, but I'd like to see how you would approach this problem.

I'm aiming for something similar to the attached file; `dihedral-parametric.scad`. The attached file is not exactly correct, so I am hoping you will create your own from scratch. Can you help me create a parametric OpenSCAD design for this?

[Assistant]
dihedral-parametric.scad:
```
// Diameter of the hole for the kite's spine
spine_hole_diameter = 9;
// Length of the "horizontal" section through which the spine goes
spine_length = 15;
// Diameter of the holes in the "arms"
arm_hole_diameter = 8.8;
// Minimum wall thickness (hole to outer edge)
wall_thickness = 2;
// Length of the "arms"
arm_length = 25.5;
// Depth of webbing between the arms (measured outwards from the "horizontal" section)
webbing_depth = 6;
// Thickness of the webbing
webbing_thickness = 2.5;

height = arm_hole_diameter + (wall_thickness * 2);
depth = max(arm_hole_diameter, spine_hole_diameter) + (wall_thickness * 2);
arm_offset_w = (((arm_length * sin(75)) - (depth * sin(15))) + spine_length) / 2;
arm_depth_extra = (((depth * sin(15)) / sin(75)) * sin(15)) / 2;
arm_offset_d = ((arm_length * sin(15)) - arm_depth_extra) / 2;
webbing_offset = (webbing_depth + depth) / 2;
webbing_flat_offset = webbing_offset + (webbing_depth / 2) - 0.25;
webbing_inseam = (arm_length * sin(75)) - (depth * sin(15));
webbing_length = webbing_inseam * 2 + spine_length;

echo(webbing_length);

// middle section
difference() {
	cube([spine_length, depth, height], center=true);
	cylinder(d=spine_hole_diameter, h=height, $fn=128, center=true);
}

// arms - 15deg angle
translate([arm_offset_w, arm_offset_d, 0]) rotate([0, 0, 15]) arm();
translate([-arm_offset_w, arm_offset_d, 0]) rotate([0, 180, -15]) arm();

// webbing
difference() {
	translate([0, webbing_offset, 0]) cube([webbing_length, webbing_depth, webbing_thickness], center=true);
	translate([arm_offset_w, arm_offset_d, 0]) rotate([0, 0, 15]) cube([arm_length, depth, 10], center=true);
	translate([-arm_offset_w, arm_offset_d, 0]) rotate([0, 180, -15]) cube([arm_length, depth, 10], center=true);
}
translate([0, webbing_flat_offset, 0]) cube([webbing_length, 0.5, height], center=true);

module arm() {
	difference() {
		cube([arm_length, depth, height], center=true);
		rotate([90, 0, 90]) cylinder(d=7.8, h=arm_length + 0.1, $fn=128, center=true);
	}
}

```


[User]
Hey, I'm trying to make some tensegrity structures, and I'd like an OpenSCAD file (or maybe a few, if that's easier) to generate the parts. I've got some basic ideas, but I need it to be parametric so I can play with the dimensions.

Basically, I need two main parts: struts and caps.

The **struts** should be cylindrical rods with slots cut out at each end. I want to control the strut's radius (`r`), the width of the slot (`sw`), the overall length of the strut (`l`), and the length of the slot (`sl`). I also need the option to rotate the slot around the strut's central axis using a `side` parameter, which will control the angle of the slot. Additionally, I need to specify the number of sides `fn` in order to determine the angle of rotation for the slot, i.e. `side*360/fn`. I'd also like to generate multiple struts at once, using parameters `ns` for the number of struts and `dist` for the distance between them.

The **caps** are meant to fit on the ends of the struts. They're essentially short, hollow cylinders with a larger radius than the struts, and they need a slot cut out of their side.  I'd need to control the radius of the cap (`r`), the width of the slot (`sw`), the height of the cap (`h`), the height of the bottom (`b`), and the wall thickness of the cap (`w`). The caps' slot should be centered on the side of the cylinder and also have a rotation depending on the number of sides `fn`. If the height of the bottom `b` is set to `0`, I'd like to have a sphere on top of the cylinder. I would also like to have several rows and columns of the caps, which is controlled by `ncr`, `ncc` and the `dist`.

I'd like a way to easily switch between generating just the struts, or just the caps, maybe with a `part` parameter that is either 0 for struts or 1 for caps.

Let me know what you think!

[Assistant]
Tensegrity.scad:
```
// Select strut or cap / Strebe oder Kappe auswaehlen
part = 0; // [0:Strut / Strebe, 1:Cap / Kappe]
// Number of sides / Anzahl der Seitenflaechen
fn = 6; // [3:60]
// Radius of part / Radius des Teils
r = 3.0;
// Width of slot / Weite des Schlitzes
sw = 2.0;
// Distance of parts / Abstand der Teile
dist = 10;
// Length of strut / Laenge einer Strebe
l = 100.0;
// Length of slot (in strut) / Laenge des Schlitzes (in der Strebe)
sl = 5.0;
// Index of bottom side / Index der Auflageflaeche
side = 0;
// Number of struts / Anzahl der Streben
ns = 6;
// Height of cap / Hoehe einer Kappe
h = 10.0;
// Height of bottom or 0 for a hood / Hoehe des Bodens oder 0 fuer eine Haube
b = 2.0;
// Thickness of wall of cap / Dicke der Wand einer Kappe
w = 1.0;
// Number of rows of caps / Anzahl der Reihen von Kappen
ncr = 3;
// Number of columns of caps / Anzahl der Spalten von Kappen
ncc = 2;

//  Struts for tensegrity models. Just rods with slots on both ends.
//  Streben fuer Tensegrity Modelle. Einfache Staebe mit Schlitzen an beiden Enden.
//
//  Appropriate caps. Eventually use slightly larger radius.
//  Geeignete Kappen. Eventuell etwas groesseren Radius benutzen!
//

module strut(r, sw, l, sl, side) {
    rotate([0, -90, 0])
    rotate([0, 0, side*360/$fn])
    difference() {
        rotate([0, 0, 180 + 180/$fn]) cylinder(r=r, h=l);
        for (z = ([0:l:l])) translate([0, 0, z]) cube([2*r+1, sw, 2*sl], center=true);
    }
}

module cap(r, sw, h, b, w) {
    difference() {
        rotate([0, 0, 180/$fn]) difference() {
            union(){
            if (b == 0) { sphere(r=r+w); };
            cylinder(r=r+w, h=h);};
            translate([0, 0, b]) cylinder(r=r, h=h+0.1);
        }
        translate([-r-sw-1, -sw/2, b]) cube([2*(r+w+1), sw, h+0.1]);
    }
}

module struts(ns, dist, fn, r, sw, l, sl, side) {
    $fn=fn;
    for (y = ([0:1:ns-1])) translate([0, y*dist, 0])
        strut(r, sw, l, sl, side);
}

module caps(ncr, ncc, dist, fn, r, sw, h, b, w) {
    $fn = fn;
    for (x = ([0:1:ncr-1])) for (y = ([0:1:ncc-1])) translate([x*dist, y*dist, 0])
       cap(r, sw, h, b, w);
}

if (part == 0) {
    struts(ns, dist, fn, r, sw, l, sl, side);
} else {
    caps(ncr, ncc, dist, fn, r, sw, h, b, w);
}

```


[User]
I'd like to create a customizable Santa Claus figure using OpenSCAD. I need a design that allows me to adjust several key features of the Santa, and I'd like to be able to generate single Santas or grids of multiple, differently-randomized Santas.

Here are the details of what I'm looking for:

**Overall Structure:**
*   The Santa should be composed of a body, a head, legs, a hat, arms, eyes, a mouth/beard, and a bag.
*   The design should allow for both a configurable single Santa with user-defined dimensions, and a random Santa, where dimensions are randomized each time one is generated. There should also be an option to generate grids of 9, 16, or 25 of these randomized Santas.
*   The polygon count should be configurable, and, when generating randomized Santas, there should be an option to set this count randomly for each instance.
*   The design should optionally include a simple base that the Santa can stand on, with size also configurable.

**Configurable Parameters:**
*   **Body:**
    *   Radius of the body.
    *   Length of the body.
    *   Ratio of body length to head length (the part of the body closer to the head will have less radius).
*   **Head:**
    *   Radius of the head.
    *   Rotation of the head in degrees.
*   **Legs:**
    *   Radius of the legs.
    *   Length of the legs.
    *   Percentage to cut off the bottom to make them flat, to allow the Santa to stand better.
    *   How far the legs should be moved out from the center of the body (as a percentage of the body radius).
*   **Hat:**
    *   Length of the hat.
    *   Amount the hat should slant outwards (as a percentage).
    *   Radius of the hat.
*   **Arms:**
    *   Radius of the arms.
    *   Length of the arms.
    *   Angle at which the arms are raised.
    *   How much the arms should move forward from the body (as a percentage of the arm length)
*  **Eyes**
    * Radius of eyes.
    * Angle out from center of head
    * Size of hole cut into eyes
*   **Mouth/Beard:**
    *   Radius of the mouth.
    *   Smiling angle (the angle at which the mouth curves).
*   **Bag:**
    *   Radius of the bag.
    *   Side of the Santa where the bag should be placed (left or right).
*   **Nose**
    * Radius of the nose.
*   **Hole:**
    *   Optional radius of a hole through the hat (for hanging the Santa). If zero, no hole is generated.
*   **Base:**
    *   Boolean to enable or disable the base.
    *   X and Y size of the base.
    *   Thickness of the base.

**Randomization:**

*   When generating a random Santa, all of the above parameters except for the boolean PrintBase and hole radius should be randomized within reasonable ranges.
*   When generating grids of random Santas, each Santa should have its own random dimensions, with random polygon count if set.

**Output:**

*   The output should be a single STL file for a single Santa, or a single STL file for a grid of Santas.

I am not requesting you to use any external libraries, so please don't add includes for anything.

Could you generate the OpenSCAD code for this?

[Assistant]
Santa_V15.scad:
```
//Select type of render. All the exact values below "Randomize_polygon_count" are only working if you select here "configurable_santa".
type="random_santa"; //[configurable_santa,random_santa, 9_random_santas,16_random_santas,25_random_santas]

//For "random_santa..." above: You can randomize the polygon count from santa to santa. Select 1 here.
Randomize_polygon_count=0; //[0, 1]

//If you set "0" above for Randomize_polygon_count: You can set here a fixed polygon count. 12 is low-poly, 30 is OK to print in most cases
Fixed_polygon_count=30;

//Body radius
body_r=13;

//Head radius
head_r=11;

//Body to head ratio in length
body_to_head_length=.3;

//Body length
body_len=27;

//Head rotation in degrees
Headrotation=20;

//Nose radius
nose_r=3;

//Leg radius
leg_r=5;

//Leg length - they are short
leg_len=3;

//Cut off the bottom of legs to have a flat surface to print easily and so that the santas stand on their own
leg_cutbottom=.5;

//Move out the legs a bit
legoutpercent=.45;

//Santas hat - length
hat_len=20;

//Hat slant out in percent
hatoutpercent=.35;
hat_r=5;

//Arm radius
arm_r=3;
//Arm length
arm_len=13;
//Arm angle up
arm_angle=30;
//Arm to the front a bit
arm_front_Percent=.2;

//Eye radius
eye_r=3;
//Eye distance as angle out
eye_out_angle=40;
//Eye center (Hole)
eyeHolepercent=.35;

//Mouth and beard
mouth_r=10;
//Smiling angle
mouthangle=20;

//Santas bag full of presents - radius
Bag_r=10;
//Bag is left or right
Bag_side=-1;

//Do you need a hole in the hat to use Santa as Christmas tree decoration? Then specify the radius here. 1.5mm radius (3mm hole diameter) is OK. If it is zero, there will be no hole. (Thanks for CaptInsano for the idea!)
Hole_r=0;

//should we have a base?
PrintBase=0; //[0, 1]

//Base size and grid distance. Typically 72x33 should be optimal for random santas in a grid. To save space and hope neighbouring santas are not both very big, distance is less, 60x30.
basex=60;
basey=30;
//Thickness of the base
basethick=4;

/* [Hidden] */
//-------------------------------------------------------------------------------
/*
Configurable santa pack
Version 15, December 2018
Written by MC Geisler (mcgenki at gmail dot com)

You need configurable santas? You have configurable santas. Either one or nine, you decide.
Use it to create mini or big santa sculptures!

Have fun!

License: Attribution 4.0 International (CC BY 4.0)

You are free to:
    Share - copy and redistribute the material in any medium or format
    Adapt - remix, transform, and build upon the material
    for any purpose, even commercially.
*/

//------------------------------------------

$fn= floor( Randomize_polygon_count == 1 ? rands(10,40,1)[0] : Fixed_polygon_count);
echo($fn);

module santa(body_r,head_r,Headrotation,body_to_head_length,body_len,leg_r,leg_len,leg_cutbottom,legoutpercent,hat_len,hatoutpercent,hat_r,arm_r,arm_len,arm_angle,arm_front_Percent,eye_r,eye_out_angle,eyeHolepercent,mouth_r,mouthangle,Bag_r,Bag_side,nose_r)
{
    //echo("body_r",body_r,"head_r",head_r,body_to_head_length,"body_len",body_len,"leg_r",leg_r,leg_len,leg_cutbottom,legoutpercent,"ear_len",ear_len,earoutpercent,"ear_r",ear_r,arm_r,"arm_len",arm_len,arm_angle,arm_front_Percent,"eye_r",eye_r,eye_out_angle,eyeHolepercent,"mouth_r",mouth_r,"mouthangle",mouthangle);
    // centers-x-y-z, radius
    legout=body_r*legoutpercent;
    leg_foot_bigger=1.1;
    leg_cutbottomshiftup=(1-leg_cutbottom)*leg_r*leg_foot_bigger;
    LegL0 = [legout, 0, leg_cutbottomshiftup, leg_r*leg_foot_bigger];
    LegL1 = [legout, 0, leg_cutbottomshiftup+leg_len, leg_r];

    LegR0 = [-legout, 0, leg_cutbottomshiftup, leg_r*leg_foot_bigger];
    LegR1 = [-legout, 0, leg_cutbottomshiftup+leg_len, leg_r];

    body_lower=leg_cutbottomshiftup+leg_len+body_r*.8;
    Body0 = [0, 0, body_lower, body_r];
    Body1 = [0, 0, body_lower+body_len*body_to_head_length, (body_r+head_r)/2*.7];
    Body2 = [0, 0, body_lower+body_len, head_r];

    body_upper=body_lower+body_len;
    //earoutpercent;

    hat0=head_r-hat_r*.7;
    hat1=hat0+hat_len*.4;
    hat2=hat1+hat_len*.6;
    hatbottom_r=head_r*.9;
    Hat0 = [0, 0, body_upper+hat0, hatbottom_r]; //on head
    Hat1 = [-hatoutpercent*hat1, 0, body_upper+hat1, (hat_r*3+head_r)/4];  //before kink
    Hat2 = [-hatoutpercent*hat2, 0, body_upper+hat2, hat_r*.4];  //after kink
    HatBall = [-hatoutpercent*hat2, 0, body_upper+hat2, hat_r];  //same position, ball

    //hole to hang santa into the christmas tree
    //check if Hole_r > 0
    Hole_negative = (Hole_r == 0? 0 : 1);
    Hole_length = hatbottom_r*(Hole_r == 0? 0 : 1);
    Hole_excenter=.7*hatbottom_r;
    Hole0 = [0, -Hole_length, body_upper+hat0+hatbottom_r, Hole_r];
    Hole1 = [0, 0, body_upper+hat0+Hole_excenter, Hole_r];
    Hole2 = [0, Hole_length, body_upper+hat0+hatbottom_r, Hole_r];

    HatBrim_donut_radius = hatbottom_r;
    HatBrim0 = [0, 0, (body_upper+hat0)*.95, hatbottom_r*.1];
    HatBrim1 = [0, 0, body_upper+hat0, hatbottom_r*.1];

    arm_out=arm_len+body_r;
    arm_z=sin(arm_angle)*arm_out;
    arm_x=cos(arm_angle)*arm_out;
    arm_front=arm_len*arm_front_Percent;
    ArmL0 = [0, arm_front, body_lower, arm_r*.7];
    ArmL1 = [-arm_x, -arm_front, body_lower+arm_z, arm_r];
    ArmR0 = [0, arm_front, body_lower, arm_r*.7];
    ArmR1 = [arm_x, -arm_front, body_lower+arm_z, arm_r];

    eye_x=sin(eye_out_angle)*head_r;
    eye_y=cos(eye_out_angle)*head_r;
    EyeL0 = [-eye_x,0,body_lower+body_len,eye_r];
    EyeL1 = [-eye_x,-eye_y,body_lower+body_len,eye_r];
    EyeR0 = [eye_x,0,body_lower+body_len,eye_r];
    EyeR1 = [eye_x,-eye_y,body_lower+body_len,eye_r];
    //eyeHolepercent=.3;
    EyeNegL0 = [-eye_x,-eye_y,body_lower+body_len,eye_r*eyeHolepercent];
    EyeNegL1 = [-eye_x,-eye_y*2,body_lower+body_len,eye_r*eyeHolepercent];
    EyeNegR0 = [eye_x,-eye_y,body_lower+body_len,eye_r*eyeHolepercent];
    EyeNegR1 = [eye_x,-eye_y*2,body_lower+body_len,eye_r*eyeHolepercent];

    Bag0 = [Bag_side*arm_x, -arm_front, (1-leg_cutbottom)*Bag_r, Bag_r];
    Bag1 = [Bag_side*arm_x, -arm_front, ((body_lower+arm_z)*5+leg_cutbottomshiftup*5)/10, (Bag_r+arm_r)/2];
    Bag2 = [Bag_side*arm_x, -arm_front, body_lower+arm_z, arm_r*.5];
    Bag3 = [Bag_side*arm_x, -arm_front, body_lower+arm_z+1.5*arm_r, arm_r*.9];

    Belt_donut_radius = body_r;
    Belt0 = [0, 0, body_lower*.9, body_r*.1];
    Belt1 = [0, 0, body_lower, body_r*.1];

    position_percent=1-head_r/body_len;//position where in the body the mouth should be in percent (should be at end of head)
    interpolated_y=position_percent*body_r+(1-position_percent)*head_r; //intermediate y between head and body
    mouthmain_y=-interpolated_y+mouth_r;
    mouth_smaller_r=mouth_r/2;
    mouthmain_z=body_lower+body_len-head_r;
    Mouth0 = [0,mouthmain_y,                           mouthmain_z,          mouth_r];
    //Mouth1 = [mouth_r*.2,mouthmain_y+(-mouth_r+mouth_smaller_r),mouthmain_z-mouth_r/2,mouth_r/2];
    Mouth1 = [0,         mouthmain_y+(-mouth_r+mouth_smaller_r),mouthmain_z-1.2*mouth_r  ,mouth_r/2];

    nose_z=body_lower+body_len-head_r*.4;
    Nose0 = [0, -head_r+nose_r/2, nose_z+nose_r, nose_r*.7];;
    Nose1 = [0, -head_r+nose_r/4, nose_z, nose_r];;
    Nose2 = [0, -head_r+nose_r/4, nose_z, nose_r];;

    mouthline_r=1;
    mouth_x=sin(mouthangle)*mouth_r;
    mouth_y=cos(mouthangle)*mouth_r;
    mouth_x2=sin(mouthangle/2)*mouth_r;
    mouth_y2=cos(mouthangle/2)*mouth_r;
    mouth_z=mouthline_r*.5;
    mouth_z2=mouthline_r*.4;
    Mouthneg0 = [-mouth_x, mouthmain_y-mouth_y, mouthmain_z,mouthline_r];
    Mouthneg1 = [-mouth_x2,mouthmain_y-mouth_y2,mouthmain_z-mouth_z2,mouthline_r];
    Mouthneg2 = [0,        mouthmain_y-mouth_r, mouthmain_z-mouth_z,mouthline_r];
    Mouthneg3 = [ mouth_x2,mouthmain_y-mouth_y2,mouthmain_z-mouth_z2,mouthline_r];
    Mouthneg4 = [ mouth_x, mouthmain_y-mouth_y, mouthmain_z,mouthline_r];

    // lines
    LegL = [LegL0, LegL1, Body0];
    LegR = [LegR0, LegR1, Body0];
    Body = [Body0,Body1,Body2];
    Hat = [Hat0, Hat1, Hat2, HatBall];
    HatBrim = [HatBrim0,HatBrim1];
    ArmL = [ArmL0, ArmL1];
    ArmR = [ArmR0, ArmR1];
    EyeL = [EyeL0, EyeL1];
    EyeR = [EyeR0, EyeR1];
    EyeNegL = [EyeNegL0, EyeNegL1];
    EyeNegR = [EyeNegR0, EyeNegR1];
    Mouth = [Mouth0, Mouth1];
    MouthNeg = [Mouthneg0,Mouthneg1,Mouthneg2,Mouthneg3,Mouthneg4];
    Bag = [Bag0, Bag1, Bag2, Bag3];
    Belt = [Belt0,Belt1];
    Nose = [Nose0,Nose1, Nose2];
    Hole = [Hole0,Hole1,Hole2];

    Part_arr=   [LegL,LegR,Body,Hat,ArmL,ArmR,EyeL,EyeR,EyeNegL,EyeNegR,Mouth,MouthNeg,Bag, Belt, HatBrim, Nose,Hole];
    PartCut_arr=[0,   0,   0,    0,  0,   0,   0,   0,   0,      0,      0,    0,      0,      0,     0,     0,  0];
    PartNeg_arr=[0,   0,   0,    0,  0,   0,   0,   0,   1,      1,      0,    1,      0,      0,     0,     0,  Hole_negative];
    rZ=Headrotation;
    RotatePart= [0,   0,   0,   rZ,  0,   0,  rZ,  rZ,  rZ,     rZ,     rZ,   rZ,      0,      0,     0,     rZ, rZ];
    Donut_r_arr=[0,   0,   0,    0,  0,   0,   0,   0,   0,      0,      0,    0,      0,Belt_donut_radius, HatBrim_donut_radius,0,0];
    //all
    max_body_overall=max(body_r+body_lower+leg_len+leg_r, arm_x*2 + Bag_r*2);
    echo(max_body_overall);

	module sphere_cube_posR(i,j,do,deltaradius) //[x,y,z,radius],do,deltaradius
	{
        Sphere_arr = Part_arr[i];
        PosR_arr=Sphere_arr[j];
        //echo("sphere --",PosR_arr[0],PosR_arr[1],PosR_arr[2],"radius=",PosR_arr[3]);

        rotate([0,0,RotatePart[i]])
        {
            translate([PosR_arr[0],PosR_arr[1],PosR_arr[2]])
            {
                if (do=="sphere")
                {
                    if (Donut_r_arr[i]==0)
                    {
                        sphere(r=PosR_arr[3]+deltaradius,center=true);
                    }
                    else
                    {
                        //do donut
                        rotate_extrude(convexity = 7)
                        translate([Donut_r_arr[i], 0, 0])
                        circle(r = PosR_arr[3]+deltaradius);//, $fn = 100);
                    }
                }
                else
                {
                    cut=(PosR_arr[3]+deltaradius)*2;

                    translate([-cut/2,-cut,-cut/2])
                        cube(cut);
                }
            }
        }
	}

	module sphere_posR(i,j,half,deltaradius) //x,y,z,radius
	{
		if (half!=1)
        {
            sphere_cube_posR(i,j,"sphere",deltaradius);
        }
        else
        {
            difference()
            {
                sphere_cube_posR(i,j,"sphere",deltaradius);
                sphere_cube_posR(i,j,"cube",deltaradius);
            }
        }
	}

    module hulls(i,half,deltaradius) //index
    {
        //echo("part",i, " len=",len(Part_arr[i])-2);

        for(j_Sphere = [0:len(Part_arr[i])-2])
        {
            //echo("sphere",j_Sphere);
            hull()
            {
                sphere_posR(i,j_Sphere,half,deltaradius);
                sphere_posR(i,j_Sphere+1,half,deltaradius);
            }
        }
    }

    difference()
    {
        //echo("starting...");
        for(i_Part = [0:len(Part_arr)-1])
        {
            if(PartNeg_arr[i_Part]==0)
            {

                if(PartCut_arr[i_Part]==0)
                {
                        //echo("part for",i_Part);
                        hulls(i_Part,0,0);
                }
                else
                {
                        difference()
                        {
                            //echo("part for",i_Part);
                            hulls(i_Part,1,0); //first 1 does only half of the hull
                            hulls(i_Part,0,PartCut_arr[i_Part]); //cut out inner ear by full hull
                        }
                }

            }
        }

        //subtract the negatives
        for(i_Part = [0:len(Part_arr)-1])
        {
            if(PartNeg_arr[i_Part]!=0)
            hulls(i_Part,0,0);
        }

        //cutoff bottom
        translate([0,0,-max_body_overall/2])
            cube([max_body_overall,max_body_overall,max_body_overall],center=true);
    }

    if(PrintBase==1)
    {
        scalingx=(basex+2*basethick)/basex;
        scalingy=(basey+2*basethick)/basey;
        translate([0,0,-basethick/2])
                scale([1,1,-1])
                    linear_extrude(height = basethick, center = true, scale=[scalingx,scalingy])
                    square([basex,basey],center=true);

        chamfer=1;
        goalx=(basex+2*basethick-chamfer);
        goaly=(basey+2*basethick-chamfer);
        chamferx=(basex+2*basethick)/goalx;
        chamfery=(basey+2*basethick)/goaly;

        translate([0,0,-basethick-chamfer/2])
                linear_extrude(height = chamfer, center = true, scale=[chamferx,chamfery])
                    square([goalx,goaly],center=true);
    }
}

//
module random_santa()
{
    body_r=rands(5,15,1)[0]; //10;
    head_r=rands(6,12,1)[0]; //8;
    body_to_head_length=rands(20,70,1)[0]/100;//.3;
    body_len=rands(10,30,1)[0]; //20;
    Headrotation=rands(-35,35,1)[0];//0;

    leg_r=rands(4,6,1)[0]; //4;
    leg_len=rands(5,50,1)[0]/10; //2.5;
    leg_cutbottom=.5;
    legoutpercent=rands(20,70,1)[0]/100;//.45;

    hat_len=rands(7,17,1)[0]; //12;
    hatoutpercent=(rands(0,1,1)[0] > 0.5 ? 1 : -1) * rands(20,90,1)[0]/100; //.45
    hat_r=rands(20,45,1)[0]/10;

    arm_r=rands(20,35,1)[0]/10; //2.5;
    arm_len=rands(60,150,1)[0]/10; //10;
    arm_angle=rands(30,45,1)[0];//30;
    arm_front_Percent=rands(0,30,1)[0]/100;//.2;

    eye_r=rands(15,27,1)[0]/10; //2.2;
    eye_out_angle=rands(10,60,1)[0];//40;
    eyeHolepercent=.5;

    mouth_r=rands(25,max(body_r,head_r)*.7*10,1)[0]/10; //5;
    mouthangle=rands(10,40,1)[0];//20;

    Bag_r=rands(60,100,1)[0]/10;//3*arm_r;
    Bag_side=(rands(0,1,1)[0] > 0.5 ? 1 : -1);

    nose_r=rands(12,50,1)[0]/10;//1-5

	santa(body_r,head_r,Headrotation,body_to_head_length,body_len,leg_r,leg_len,leg_cutbottom,legoutpercent,hat_len,hatoutpercent,hat_r,arm_r,arm_len,arm_angle,arm_front_Percent,eye_r,eye_out_angle,eyeHolepercent,mouth_r,mouthangle,Bag_r,Bag_side,nose_r);
}

module standard_santa()
{
santa(body_r,head_r,Headrotation,body_to_head_length,body_len,leg_r,leg_len,leg_cutbottom,legoutpercent,hat_len,hatoutpercent,hat_r,arm_r,arm_len,arm_angle,arm_front_Percent,eye_r,eye_out_angle,eyeHolepercent,mouth_r,mouthangle,Bag_r,Bag_side,nose_r);
}

////---------------------------------------

module randomsantas(xx,yy)
{
    for (x = [0:xx-1])
    {
        for (y = [0:yy-1])
        {
            $fn= floor( Randomize_polygon_count == 1 ? rands(10,40,1)[0] : Fixed_polygon_count);
            translate([x*basex,y*basey,0])
                random_santa();
        }
    }
}

if (type=="9_random_santas")
{
    randomsantas(3,3);
}

if (type=="16_random_santas")
{
    randomsantas(4,4);
}

if (type=="25_random_santas")
{
    randomsantas(5,5);
}

if (type=="configurable_santa")
{
    standard_santa();
}

if (type=="random_santa")
{
    random_santa();
}

```


[User]
Hey, I'm looking to get a parametric crate designed for 1:18 scale figures, and I'd like to have a snap-on lid option. The design I'm after is a bit different from the basic one I've seen around - I'm thinking of something more like a larger, reinforced wooden crate.

Here's the breakdown:

*   **Parametric Dimensions:** The main things I want to be able to control are the overall `width`, `height`, and `depth` of the crate.

*   **Cross Pieces:** I'd like to have reinforcing cross pieces on the sides of the crate. These should run diagonally across the faces, almost like a truss. The cross pieces should have an intersection on the face, with a secondary beam coming out from it that attaches to the side of the crate. I'd like an option to have these pieces on *both* sides (box and lid) or only on the box itself.

*   **Construction:**
    *   The crate itself should be built from individual planks with a little bit of spacing. I should be able to control the thickness and the gap between these planks. There should also be a corner plank structure to hold the pieces together and make up the corner supports of the box.
    *   The bottom should have planks as well.
*   **Lid:** The lid should snap on and have a similar plank construction. The lid's planks will run along the width of the crate. It should also have its own set of diagonal cross pieces. It should have a small edge to fit into the box, and the interior dimensions should take that into account. There should also be a small lip around the edges of the lid to keep it in place and also to look like the ends of boards.

*   **Parts Options:** It would be great if I could output the crate and lid together, or as separate pieces, so there should be a variable that allows for: 1. Both crate and lid, 2. crate only, and 3. lid only.

*   **OpenSCAD Libraries:** I'm not sure if any specific libraries would be needed for this; I just need the core design.

I think that's everything for now! Let me know if you have any questions.

[Assistant]
crateLarge.scad:
```
/* [Parameters] */
parts = 3; // [3:both, 1:box_only, 2:lid_only]

width = 30;
height = 15;
depth = 27;

/* [Hidden] */
$fn = 32;

boardGap = 0.4;
boardThick = 0.8;
boardWidth = 3;
clearance = 0.3;

function getAdjustedNum(total, start, gap) = floor(total / (start + gap));
function getAdjustedDimension(total, start, gap) = (total - (floor(total / (start + gap))-1)*gap)/floor(total / (start + gap));

module crossPieces(w, h, d, both)
{
    crossW = sqrt(w*w+h*h);

    angle = atan(h/w);

    intersection() {

        if (both)
        {
            union() {
                difference() {
                    translate([w*0.5, d*0.5, h*0.5])
                    rotate([0, angle, 0])
                    cube([crossW*1.5, d+(boardThick*2), boardWidth], center=true);

                    translate([w*0.5, d*0.5, h*0.5])
                    rotate([0, -angle, 0])
                    cube([crossW*1.5, d+(boardThick*4), boardWidth+(boardGap*2)], center=true);
                }

            translate([w*0.5, d*0.5, h*0.5])
            rotate([0, -angle, 0])
            cube([crossW*1.5, d+(boardThick*2), boardWidth], center=true);
            }

        }
        else
        {
            translate([w*0.5, d*0.5, h*0.5])
            rotate([0, -angle, 0])
            cube([crossW*1.5, d+(boardThick*2), boardWidth], center=true);

        }

    translate([w/2,d/2,h/2])
    cube([w-(boardWidth+boardGap)*2,d+(boardThick*4),h-(boardWidth+boardGap)*0], center=true);
}
}

module sidePanels(w, h, d)
{
    numH = getAdjustedNum(h, boardWidth, boardGap);
    bH = getAdjustedDimension(h, boardWidth, boardGap);

    for (i=[0:numH-1])
    {
        translate([0, 0, i*(bH+boardGap)])
        cube([w, d, bH]);
    }

}

module corners(w,h,d)
{
    translate([0,-boardThick,-boardThick])
    cube([boardWidth, boardThick*2, h+boardThick]);

    translate([w-boardWidth,-boardThick,-boardThick])
    cube([boardWidth, boardThick*2, h+boardThick]);

    translate([0,d-boardThick,-boardThick])
    cube([boardWidth, boardThick*2, h+boardThick]);

    translate([w-boardWidth,d-boardThick,-boardThick])
    cube([boardWidth, boardThick*2, h+boardThick]);

    translate([-boardThick,0,-boardThick])
    cube([boardThick*2, boardWidth, h+boardThick]);

    translate([-boardThick,d-boardWidth,-boardThick])
    cube([boardThick*2, boardWidth, h+boardThick]);

    translate([w-boardThick,0,-boardThick])
    cube([boardThick*2, boardWidth, h+boardThick]);

    translate([w-boardThick,d-boardWidth,-boardThick])
    cube([boardThick*2, boardWidth, h+boardThick]);
}

module bottom(w, h, d)
{
    numW = getAdjustedNum(w, boardWidth, boardGap);
    bW = getAdjustedDimension(w, boardWidth, boardGap);

    for (i=[0:numW-1])
    {
        translate([i*(bW+boardGap),-boardThick,-boardThick*2])
        cube([bW, d+(boardThick*2), boardThick*2]);
    }

}

module crate(w, h, d)
{
    difference() {
        union() {
            sidePanels(w,h,d);

            rotate([0,0,-90])
            translate([-d,0,0])
            crossPieces(d, h, w, true);

            crossPieces(w, h, d, true);

            corners(w,h,d);
            bottom(w,h,d);

            // central part
            translate([boardGap, boardGap, 0])
            cube([w-(boardGap*2), d-(boardGap*2),h]);
        }

        adjust = (boardGap+boardThick) * 2;
        translate([adjust/2, adjust/2, boardThick])
        cube([w-adjust, d-adjust, h]);
    }
}

module lid(w, h, d)
{
    union() {
        numW = getAdjustedNum(w, boardWidth, boardGap);
        bW = getAdjustedDimension(w, boardWidth, boardGap);

        adjust = boardWidth + boardGap;
        edgeClear = (boardGap+boardThick+clearance) * 2;

        for (i=[0:numW-1])
        {
            translate([i*(bW+boardGap),0,-boardThick])
            cube([bW, d, boardThick*1]);
        }

        translate([0,0,-boardGap])
        cube([w,d, boardGap]);

        translate([edgeClear/2, edgeClear/2, 0])
        cube([w-edgeClear,d-edgeClear, boardThick*2]);

        angle = atan(d/w);
        crossL = sqrt(w*w+d*d);

        // cross beams
        intersection() {
            union() {
                difference() {
                translate([w/2,d/2, -boardThick])
                rotate([0,0,angle])
                cube([crossL, boardWidth, boardThick*2], center=true);

                translate([w/2,d/2, -boardThick*(0.5)])
                rotate([0,0,-angle])
                cube([crossL, boardWidth+(boardGap*2), boardThick*4], center=true);
                }

                translate([w/2,d/2, -boardThick])
                rotate([0,0,-angle])
                cube([crossL, boardWidth, boardThick*2], center=true);
            }

            adjust = (boardWidth+boardGap)*2;
            translate([adjust/2,adjust/2,-boardThick*2.5])
            cube([w-adjust, d-adjust, boardThick*5]);
        }

        translate([0,0,-boardThick*2])
        cube([w, boardWidth, boardThick*1.1]);

        translate([0,d-boardWidth,-boardThick*2])
        cube([w, boardWidth, boardThick*1.1]);

        translate([0,adjust,-boardThick*2])
        cube([boardWidth, d-((boardWidth+boardGap)*2), boardThick*1.1]);

        translate([w-boardWidth,adjust,-boardThick*2])
        cube([boardWidth, d-((boardWidth+boardGap)*2), boardThick*1.1]);
    }
}

translate([0,0,boardThick*2])
{
    if (parts > 0) {

        if (parts % 2 == 1) {
                crate(width, height, depth);
        }

        if (parts > 1) {
            // rotate([180,0,0])
            translate([0,-depth*1.2,0])
            lid(width, height, depth);
        }

    }
}
```


[User]
Hi, I'm looking for some help designing a toothbrush cover for travel. I've been using one that I found online, but it's a bit bulky, and now my wife wants one too, but smaller, and also able to carry the kids' toothbrushes.

I'd like to design a parametric OpenSCAD model that can hold a variable number of toothbrush heads. Ideally, it would have a rounded, streamlined shape. It should have separate slots for each toothbrush head, and a bit of a 'clamp' or holding structure to keep the brushes in place. It needs to have both an opening for the toothbrush head, and another opening for the toothbrush stem.

Here's a breakdown of the dimensions I'm thinking of, but remember, I want to make them easily adjustable with parameters:

*   **`cnt`**: The number of toothbrush heads to accommodate (this should be easily changed, like a customizer option in Thingiverse).

*   **`d_b`**: The diameter of the toothbrush head area, including a bit of extra space (say, 16mm).
*   **`h_b`**: The height of the toothbrush head area up to the middle of the handle, plus some extra clearance (say 17mm).
*   **`d1`**: The diameter of the toothbrush handle very close to the head (say, 8mm).
*   **`d2`**: The diameter of the toothbrush handle a little further away from the head (say, 9mm, about 20mm away from the brush head).
*   **`ws`**: Wall thickness (around 1.4mm seems good).
*   The holder should have an outer ring with a diameter (`d3`) that is a bit larger than `d2` to accommodate the handle.
*   The part of the holder that grips the stem should extend downwards a bit and clamp down on the stem at a certain height (`hk`). I'm thinking `hk` should be something around one fifth of `d3`.

The overall design should have rounded edges, and be relatively compact - think of it as a series of connected tubes or rings, each holding a brush. I want a clean look so that when they're connected they look like a single piece, and the "bottom" should be flat so they stand on a table.

For the actual code, I'm not expecting you to use any external libraries or anything, just built-in OpenSCAD functionality. I'm envisioning a main module that can generate the entire holder for all toothbrushes, and smaller helper modules (like maybe a `Ring()` module). I also want a module for the solid part of the holder and a separate one to generate the negative space for the toothbrushes.

Could you help me with this design?

[Assistant]
Zahnbuersten-Cover.scad:
```
// -----------------------------------------------------
// Zahnbuersten-Cover (fuer die Kulturtasche)
//
//  Detlev Ahlgrimm, 07.12.2018
// -----------------------------------------------------

// Number of connected toothbrush-head-covers
cnt=1;        // [1:6]

d_b=16;       // Durchmesser Buerste + Spiel (15+1)
h_b=17;       // Hoehe Buerste (bis zur Arm-Mittelachse) + Luft (15+2)

d1=8;         // Durchmesser des Arms direkt an der Buerste
d2=9;         // Durchmesser des Arms 20mm von der Buerste entfernt

ws=1.4;       // Wandstaerke

/* [Hidden] */
$fn=100;
d3=d2+2*ws;   // Aussen-Durchmesser Arm-Halterung
hk=d3/5;      // Hoehe, auf der der Arm geklemmt wird

// -----------------------------------------------------
//  d : Aussendurchmesser
//  h : Hoehe / Ringstaerke
// -----------------------------------------------------
module Ring(d, h) {
  rotate_extrude() translate([d/2-h/2, 0, 0]) circle(d=h);
}

// -----------------------------------------------------
//
// -----------------------------------------------------
module HalterMassiv() {
  hull() {    // der Buerstenhalter in abgerundet
    translate([0, 0, h_b+ws-ws/2+hk]) Ring(d_b+2*ws, ws);   // oben
    translate([0, 0, ws/2-0.3]) Ring(d_b+3*ws, ws);         // unten
  }
  hull() {
    translate([20+d_b/2-ws/2, 0, hk]) rotate([0, 90, 0]) Ring(d3, ws);
    translate([0, 0, hk]) rotate([0, 90, 0]) cylinder(d=d3, h=20+d_b/2-ws);  // der Arm-Halter
  }
  translate([0, 0, hk]) rotate([0, 90, 0]) cylinder(d1=d_b+2*ws, d2=d3, h=d_b/2+3*ws);  // der Ansatz zwischen Buersten- und Arm-Halter
}

// -----------------------------------------------------
//
// -----------------------------------------------------
module HalterAusschneider() {
  translate([-d_b-ws, -d3, -d3]) cube([20+2*(d_b+2*ws), 2*d3, d3]);             // Boden plan machen
  translate([0, 0, -0.1]) cylinder(d1=d_b+ws, d2=d_b, h=h_b+0.11);    // Platz fuer die Buerste freischneiden
  translate([0, 0, h_b]) cylinder(d1=d_b, d2=d_b-2*hk, h=hk);         // obere Verengung
  translate([    0, 0, hk]) rotate([0, 90, 0]) rotate([0, 0, 36/2]) cylinder(d=d1, h=d_b/2+0.1, $fn=10);      // inneren Ansatz freischneiden
  translate([d_b/2, 0, hk]) rotate([0, 90, 0]) rotate([0, 0, 36/2]) cylinder(d1=d1, d2=d2, h=20.01, $fn=10);  // Arm freischneiden
}

difference() {
  union() {
    for(i=[0:cnt-1]) {
      translate([0, i*(d_b+2*ws), 0]) HalterMassiv();
    }
    translate([17+d_b/2, 0, 0]) cube([3, (cnt-1)*(d_b+ws), 3]);
  }
  for(i=[0:cnt-1]) {
    translate([0, i*(d_b+2*ws), 0]) HalterAusschneider();
  }
  //translate([-20, -20, -1]) cube([50, 20, 30]);
}

```


[User]
I'd like to design a handlebar plug for my bicycle, and I need a parametric OpenSCAD file to do it. The basic design will be a cylinder that fits inside the handlebar with a flange on the outside to keep it from going in too far.

Here are the details:

*   There should be an inner cylinder that goes into the handlebar with a radius of `rInner`, and a height of `height`.
*   There should be a flange on the outside with a thickness of `thickness` and an outer radius of `rOuter`.
*   The inside cylinder will need to be hollow, so the inside will be removed leaving a shell of thickness `thickness` for the insertion part.
*   There should be a rounded chamfer where the flange meets the insertion cylinder for a smooth transition.
*   Around the insertion cylinder, there should be slits to allow the plug to compress and fit into different diameter handlebars. These slits should be equally spaced around the circumference, and each slit should have a width of `slitWidth`, a depth of `slitDepth`, and a height of `slitHeight`. There should be `numSlits` of these slits.
*   I would also like a rounded chamfer on the outer edge of the flange.

All of these parameters should be configurable in the customizer.

[Assistant]
HandlebarPlug.scad:
```
thickness = 3;
rInner=10;
rOuter=12;
height = 18;
slitWidth=2;
slitDepth=10;
slitHeight=15;
numSlits=6;

difference(){
	union(){
		cylinder(r=rOuter, h=thickness);
		cylinder(r=rInner, h=height);
		translate([0,0,height]){
		rotate_extrude(convexity = 10, $fn = 100)
		translate([rInner-thickness/2, 0, 0])
		circle(r = 1.5, $fn = 100);
	}
	}
	translate([0,0,thickness]) cylinder(r=rInner-thickness, h=height);
	for(i=[1:numSlits]){
		rotate([0,0,i*360/numSlits]) translate([0,0,height+thickness-slitHeight]) cube([rOuter,slitWidth,slitHeight]);
	}
}

translate([0,0,thickness/2]){
rotate_extrude(convexity = 10, $fn = 100)
translate([rOuter, 0, 0])
circle(r = 1.5, $fn = 100);
}
```