[User]
I'd like to create a parametric fidget spinner design. It should be a star shape with a central bearing and weights placed at the tips of the star points.

Here are the specific requirements I have in mind:

**Overall Shape & Points:**

*   The spinner should be star-shaped, with the number of points being a parameter, selectable between 4, 5, or 6 points.

**Center Bearing:**

*   It should accommodate a standard 608 bearing (22mm outer diameter, 7mm thickness).

**Weight Options:**

*   I want to be able to choose from various types of weights. I need options for:
    *   5/16" hex nuts
    *   3/8" hex nuts
    *   1/2" hex nuts
    *   M8 hex nuts
    *   M10 hex nuts (both 16mm and 17mm sizes)
    *   M12 hex nuts (both 18mm and 19mm sizes)
    *   M4 square nuts
    *   5/16" ball bearings
    *   3/8" ball bearings
    *   1/2" ball bearings
    *   5/8" ball bearings
*  The code should calculate the dimensions based on the selected weight type using the listed values in the attached file.
*   The center bearing and weight pockets should have optional horizontal glue grooves.

**Additional Features:**

*   I'd like the option to add triangular cutouts on the star arms.
*   There should be a parameter to control the roundness of the corners, with a default of 3mm radius. This is actually optional, and I understand that it may cause a timeout when previewing so if it doesn't work, it's not a huge deal.
*   I would like the code to use reasonable resolution defaults for circles and such. This might mean setting `$fn` to a lower value for things like hex nut pockets but a higher value for the main body.

I’m not specifying any specific libraries to use, so you’re free to choose the best ones in order to implement this design.

[Assistant]
star-2017-09-30.scad:
```
// lucina
// 2017-09-30

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

// the number of points
points = 5; //[4,5,6]

// the type of weight
whichWeight = "5/16 hex nut";   //[608 bearing, 5/16 hex nut, 3/8 hex nut, 1/2 hex nut, M8 hex nut, M10 16 hex nut, M10 17 hex nut, M12 18 hex nut, M12 19 hex nut, M4 square nut, 5/16 ball bearing, 3/8 ball bearing, 1/2 ball bearing, 5/8 ball bearing]

// corner roundness in mm; > 0 causes timeout but Create Thing still works
radius = 3;  //[0:.5:3]

// cut out additional triangle adornments
cutouts = "yes";   //[yes, no]

// horizontal center bearing glue groove
bearingGlueGroove = 0;   //[0, .5, 1.0, 1.5]

// horizontal ray weights glue groove
weightsGlueGroove = 0;   //[0, .5, 1.0, 1.5]

/* [Hidden] */
$fn = 60;
x = 0; y = 1; z = 2;
inch = 25.4;

bearing = [22, 22, 7]; //608 bearing
sae = [.577*inch, .5 * inch, 7]; // 5/16 hex nut
sae38 = [.650*inch,.562*inch, 7];	// 3/8
sae12 = [.866*inch, .75*inch, 7];	// 1/2
metric8 = [15, 13, 7];   // M8 hex nut
metric10_16 = [17.77, 16, 7];   // M10 16 hex nut
metric10_17 = [19.6, 17, 7];   // M10 17 hex nut
metric12_18 = [20.03, 18, 7];   // M12 18 hex nut
metric12_19 = [21.9, 19, 7];   // M12 19 hex nut
metric4sq = [7, 7, 3.2];
ball516 = [5/16*inch, 5/16*inch, 5/16*inch];
ball38 = [3/8*inch, 3/8*inch, 3/8*inch];
ball12 = [1/2*inch, 1/2*inch, 1/2*inch];
ball58 = [5/8*inch, 5/8*inch, 5/8*inch];

weight = (whichWeight == "608 bearing") ? bearing :
   (whichWeight == "5/16 hex nut") ? sae :
   (whichWeight == "3/8 hex nut") ? sae38 :
   (whichWeight == "1/2 hex nut") ? sae12 :
   (whichWeight == "M8 hex nut") ? metric8 :
   (whichWeight == "M10 16 hex nut") ? metric10_16 :
   (whichWeight == "M10 17 hex nut") ? metric10_17 :
   (whichWeight == "M12 18 hex nut") ? metric12_18 :
   (whichWeight == "M12 19 hex nut") ? metric12_19 :
   (whichWeight == "M4 square nut") ? metric4sq :
   (whichWeight == "5/16 ball bearing") ? ball516 :
   (whichWeight == "3/8 ball bearing") ? ball38 :
   (whichWeight == "1/2 ball bearing") ? ball12 : ball58;
echo(whichWeight, weight[x], weight[y], weight[z]);
resolution = (whichWeight == "5/16 hex nut") ? 6 :
(whichWeight == "3/8 hex nut") ? 6 :
(whichWeight == "1/2 hex nut") ? 6 :
(whichWeight == "M8 hex nut") ? 6 :
(whichWeight == "M10 16 hex nut") ? 6 :
(whichWeight == "M10 17 hex nut") ? 6 :
(whichWeight == "M12 18 hex nut") ? 6 :
(whichWeight == "M12 19 hex nut") ? 6 :
(whichWeight == "M4 square nut") ? 4 : 60;
echo("resolution=", resolution);

step = 360 / points;
stop = (points-1) * step;

thick = 3;
space = (cutouts == "yes") ? max(weight[x]/1.4, 10.5) : weight[x]/1.4;
echo("space=",space);

module node(rad, wt) {
   triangle(bearing[z], wt[x]+2*space, rad);
}

module fcylinder(z, x, rad) {
   minkowski() {
      cylinder(h=z-2*rad, d=x-2*rad, center=true);
      sphere(rad);
   }
}
module fcube(c, rad) {
   minkowski() {
   cube([c[x], c[y]-2*rad, c[z]-2*rad], center=true);
      sphere(rad);
   }
}

module triangle(ht, wd, rad) {
   minkowski() {
      cylinder(h=ht-2*rad, d=wd-2*rad, center=true, $fn = 3);
      sphere(rad);
   }
}

module glueGroove(grooveHt, diam, res) {
   rotate([0, 0, 30])
      cylinder(h=grooveHt, d=diam+2*grooveHt, $fn=res);
}

difference() {
   union() {
      fcylinder(bearing[z], bearing[x]+2*thick, radius);
      for ( angle = [0 : step : stop] ) {
         hull() {
            fcylinder(bearing[z], weight[x]+2*space, radius);
            rotate([0, 0, angle])
               translate([(bearing[x]+weight[y])/2+thick, 0, 0])
                  node(radius, weight);
        }
      }
   }

   // holes
   union() {
      cylinder(h=2*bearing[z], d=bearing[x], center=true);
      if ( bearingGlueGroove > 0 ) {
         glueGroove(bearingGlueGroove, bearing[x], 60);
      }
      for ( angle = [0 : step : stop] ) {
         rotate([0, 0, angle])
            union() {
               translate([(bearing[x]+weight[y])/2+thick, 0, 0])
                  union() {
                     rotate([0, 0, 30])
                        cylinder(h=2*bearing[z], d=weight[x], center=true, $fn=resolution);
                     if ( weightsGlueGroove > 0 ) {
                        glueGroove(weightsGlueGroove, weight[x], resolution);
                     }
                  }
               if ( cutouts == "yes" ) {
                  translate([(bearing[x]+weight[y])/2+thick + weight[x]/2+space/3 , 0, 0])
                     cylinder(h=2*bearing[z], d=.66*space, center=true, $fn = 3);
               }
               if ( weightsGlueGroove > 0 ) {
                  glueGroove(weightsGlueGroove, weight[x], resolution);
               }
            }
         if ( cutouts == "yes" ) {
            rotate([0, 0, angle+step/2])
               translate([bearing[x]/2 + thick, 0, 0])
                  scale([1, 2.5, 1])
                     cylinder(h=2*bearing[z], d=.2*space, center=true, $fn = 3);
         }
      } // for
   } // union
} // difference

```


[User]
Hey, I'm looking for help designing a parametric vase in OpenSCAD. I have a rough idea of what I want, and I'm hoping you can help me turn it into code.

Basically, I want a vase that's built up in layers, almost like a stack of tessellated cubes. Here are the features I'm envisioning:

*   **Overall Height:** I want to be able to set the total height of the vase in millimeters.
*   **Number of Layers:** I want to control how many layers the vase is built with.
*   **Width:** The overall width/diameter of the vase (in millimeters) is also important.
*   **Wall Thickness:** I need to be able to set how thick the walls are. This should also be in millimeters.
*   **Spin:** I'd like to be able to introduce some rotation to each layer as it goes up, creating a sort of spiral effect, so a parameter to control the amount of spin/rotation on each layer would be needed.
*   **Base Size:** I want to be able to set the size of the base of the vase as a percentage of the main width.
*   **Magic Sause:** I have a non-specific parameter in my project called "magic sausce," which controls the rate of growth in the width of each layer. I know it's a weird name, but I need to keep it that way.

The layers themselves should each be made of a series of rotated cubes. Each layer should be slightly beveled, with a cone on top of the layer being subtracted to do the bevel. The inside should be hollowed out using a series of cylinders stacked on top of each other. The base should be a series of rotated cubes that are much smaller than the main body of the vase.

So, to recap the parameters I need:

*   `height` (mm)
*   `layers` (number of layers)
*   `width` (mm)
*   `thickness` (mm)
*   `spin` (amount of spin per layer)
*   `base` (percentage of width)
*   `magicsause` (controlling rate of change in width)

I'd like to avoid needing any support material when printing. I do not need any special libraries. Could you help me generate the OpenSCAD code for this?

[Assistant]
acemtote.scad:
```
//How tall do you want your vase?
height = 250;
//How many steps do you want the vase to go up in?
layers = 10;
//How wide in MM is the vase
width = 400;
//wall width Increase this number to make the pot waterproof, decrease it to make more room for plants
thickness = 60;
//Want some spin?
spin = 2;
//Number 1-100, size of the base in percent
base = 60;
//pick random numbers for this until it looks good
magicsause = 50;

growth = height/layers;

difference(){
union(){
difference(){
    //controlls the number of layers
    for (stackcount = [0:growth:height])
    {
        tempwidth = (stackcount/ (stackcount + magicsause))*width;
        //bevels the edge of each layer
        intersection(){
            //makes squares for each layer
            union(){
                     for (x = [0:15:75]){
                        translate([0,0,stackcount]) rotate([0,0,x+((stackcount/growth)*spin)]) cube([tempwidth,tempwidth,growth*2], center = true);
                                        }
                   }
                    //makes the cone to shape the bevel
                    translate([0,0,stackcount*.9]) cylinder(growth*2, tempwidth*.5, tempwidth, center=true,  $fn=24);
                }
    }

            translate([0,0,0])

            //hollows out the vessel
           for (stackcountY = [0:growth:height ])
        {

            topr = (stackcountY/ (stackcountY + magicsause))*width;
            botr = ((stackcountY -growth)/ ((stackcountY-growth) + magicsause))*width;
        translate([0,0,stackcountY]) cylinder(growth, (botr-thickness)*.75, (topr - thickness)*.75 , center = false, $fn = 24);
        }
}
//makes the base
for (x = [0:15:75]){
                       translate([0,0,.5*growth]) rotate([0,0,x]) cube([width*(base/100),width*(base/100),growth], center = true);
                    }

                }
                //cleanup the bottom. dont know why i need this
                translate ([0,0,-3]) cylinder(3,width, width);
            }
```


[User]
Hey, I'm looking to get a custom tripod mount ring designed for my camera lens. I've got some experience with OpenSCAD, but I'm struggling to get all the parts working together.

Essentially, I need a parametric model that creates a ring that clamps onto the lens, has a tripod mount on the bottom, and includes the ability to add alignment marks. It should also be customizable for different lens sizes and different mounting hardware.

Here's a breakdown of what I'm envisioning and how the parameters should work:

**Core Components:**

1.  **Ring:**
    *   A cylindrical ring that will clamp around the lens.
    *   Should have an adjustable inner diameter.
    *   Should have an adjustable ring thickness.
    *   Should have an adjustable ring width (height).
2.  **Clamp:**
    *   A clamp mechanism that closes the ring around the lens.
    *   Needs a gap for a bolt and nut.
    *   Should have adjustable width and height.
    *   Should have a cutout to recess the bolt head on one side.
    *   Optionally have a anti-rotation feature for the clamp.
    *   Clamp position on the ring should be adjustable (left or right)
3.  **Tripod Foot:**
    *   A foot that extends from the bottom of the ring.
    *   Should have adjustable length and width.
    *   Should have adjustable clearance from the ring.
    *   Should have options for T-nut, threaded insert, or hex nut (or no insert).
    *   Specific parameters for each of the hardware options (e.g. T-nut diameter, threaded insert length, hex nut diameter).
4.  **Alignment Marks:**
    *   Option to add small cylindrical marks to the outer surface of the ring to help with alignment.
5. **Build Plate Visualization:**
    *   Option to visualize on a standard build plate. I have a Prusa so I would need to be able to specify a custom size.

**Parameters:**

*   **`ring_model`:**  A dropdown menu with presets for popular lens sizes (e.g., "Canon A," "Canon B," "Nikon RT-1", or "Custom").
*   **`ring_custom_dia`**: (mm) - If `ring_model` is "Custom", this is the inner diameter of the ring.
*   **`ring_tolerance`**: (mm) - Add or subtract to the calculated ring diameter.
*   **`add_alignment_marks`**: "Yes" or "No" - Enables or disables alignment marks.
*   **`clamp_side`**: `1` (Left) or `-1` (Right).
*   **`clamp_bolt_hole_dia`**: (mm) - Diameter of the bolt hole for the clamp.
*   **`foot_width`**: (mm) - Width of the tripod foot.
*   **`foot_length`**: (mm) - Length of the tripod foot.
*   **`foot_to_ring`**: (mm) - Clearance between the ring and the foot.
*   **`tripod_screw_dia`**: (mm) - Diameter of the tripod screw (usually 6.35mm/1/4").
*   **`tripod_screw_thread_hardware`**: Dropdown: "tnut", "insert", "nut", "none" - Selects the tripod mount hardware type.
*   **`t_nut_barrel_dia`**: (mm) - Outer diameter of T-nut barrel.
*   **`t_nut_top_dia`**: (mm) - Outer diameter of T-nut top flange.
*   **`t_nut_elevation`**: (mm) - Length of the T-nut barrel, including gap.
*   **`thread_insert_drill_dia`**: (mm) - Recommended drill diameter for threaded insert.
*   **`thread_insert_length`**: (mm) - Length of the threaded insert.
*   **`hex_nut_dia`**: (mm) - Width of the hex nut across the points.
*   **`hex_nut_elevation`**: (mm) - Height from the tripod foot to the base of the hex nut.
*   **`build_plate_selector`**: Dropdown: "Replicator 2","Replicator", "Thingomatic", "Manual".
*   **`build_plate_manual_x`**: (mm) - Build plate X dimension.
*   **`build_plate_manual_y`**: (mm) - Build plate Y dimension.

**Code Structure**
I would appreciate it if you use the `write` library and `build_plate` library to keep the code modular and organized.

I think that covers everything. Let me know if you have any questions or need any clarification. I'm really excited to get this working, so thank you so much!

[Assistant]
lens_tripod_mount_ring_v1.7_customizable.scad:
```
/* customizable_lens_tripod_mount_ring.scad
by @mildmojo
http://www.thingiverse.com/thing:2277236
v1.7 - Fixes a spurious sphere when setting foot dimensions to zero.
v1.6 - Customizer: moves build plate stuff to a tab, changes view orientation.
v1.5 - Fixes Customizer alignment marks for real, fixes default selection in
       Customizer ring model list, clarifies some comments for Customizer.
v1.4 - More Customizer fixes; alignment marks boolean fix, unhide hex nut
       elevation.
v1.3 - Fixes to make Customizer work better.
v1.2 - Narrows clamp gap again so 1.5" bolt is useful. Slightly expands clamp
       bolt hole and bolt head countersink recess.
v1.1 - Widens clamp gap, bulks up clamp nut side with anti-rotation trapezoid,
       adds ring size inscription in ring, adds ring size label to SCAD preview.
v1.0 - Initial version.

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Want a permissive license? Commercial use? Ask me on Thingiverse or Twitter!
https://creativecommons.org/licenses/by-nc/4.0/

WHAT IS IT?
===========
This is a tripod mount ring for large lenses. It lets you mount a compatible
lens to a tripod for better balance than mounting the camera body on the
tripod with a heavy lens hanging off the front.

PRINT SETTINGS
==============
Recommended print settings:
- 0.2mm layers
- 1.2 - 1.6mm walls
- 1.0 - 1.2mm top and bottom surfaces
- 35% infill
- PLA stretches when the ring is tightened on the lens, loosening over time.
  Suggest another filament like PETT (t-glase) or PETG (or ABS?) that resists
  stretching under tension.

ADDITIONAL HARDWARE
===================
Recommended hardware:
- 1/4-20 1.5" stainless bolt (for clamp)
- 1/4-20 stainless nut (for clamp)
- 1/4-20 brass threaded insert, or T-nut, or stainless hex nut (for tripod screw)

If using a T-nut or push-type threaded insert, press the hardware into place
using a soldering iron so it melts into the plastic.

CLAMP KNOB SOLD SEPARATELY
==========================
Print a nut knob for tightening the clamp using wstein's Ultimate Nut Knob
Generator (or use the .STL bundled with this project):
http://www.thingiverse.com/thing:713300

Tripod mount ring diameters based on research from:
https://www.pentaxforums.com/forums/114-maintenance-repair-articles/238879-modding-chinese-other-tripod-mounts-fit-eg-adaptall-lenses.html
https://photo.stackexchange.com/a/3478
https://aliexpress.com (product searches)

Canon A (W), A II (W) - 65mm. 70-200mm f/4 L (for both IS & non-IS versions), 300mm f/4 L, 400mm f/5.6 L
Canon A (B), A II (B) - 65mm. 200mm f/2.8 L, 200mm f/2.8 L II, 80-200mm 2.8 L
Canon B (W) - 78mm. 70-200mm f/2.8 L (IS, non-IS, IS II), 100-400mm f4.5-5.6 L, 300mm f/4 L IS
Canon B (B) - 78mm. 100mm f/2.8 Macro, 180mm f/3.5 L Macro & MP-E 65mm f/2.8 Macro
Canon C (W) - 81mm. 70-300mm f/4.5-5.6 L IS, 28-300mm f/3.5-5.6 L IS
Canon D - 68.5mm. 100mm f/2.8L IS Macro, 65mm Macro, 180 f/3.5 L Macro
*/

use <write/Write.scad>
use <utils/build_plate.scad>

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

/* [General] */

// Ring or lens model
ring_model = 65.01; //[0:Custom, 65.01:Canon A + A(II) tripod mount ring, 78:Canon B tripod mount ring, 81:Canon C tripod mount ring, 68.5:Canon D tripod mount ring, 68.5:Canon EF MP-E 65mm f/2.8 macro (D), 81:Canon EF 28-300mm f/3.5-5.6 (C), 78:Canon EF 70-200mm f/2.8 L (all) (B), 65:Canon EF 70-200mm f/4 L (all) (A), 81:Canon EF 70-300mm f/4-5.6 L IS USM (C), 68.5:Canon EF 100mm f/2.8 L macro IS (D), 78:Canon EF 100-400mm f/4.5-5.6 L IS USM (B), 68.5:Canon EF 180mm f/3.5 L macro (D), 65:Canon EF 200mm f/2.8 L (all) (A), 65:Canon EF 300mm f/4 L (A), 65:Canon EF 400mm f/5.6 L (A), 68:Nikon RT-1 mount ring, 68:Nikon AF-S 70-200mm f/4 G ED VR (RT-1), 80:Nikon AF-S 80-200mm f/2.8 D ED, 79:Nikon AF-S 200-500mm f/4 E ED VR, 79:Nikon AF-S 300mm f/4 E PF ED VR]

// WORKAROUND: Customizer defaults to the last list item with the default value,
//   so it was picking "Canon EF 400mm" instead of "Canon A". Set "Canon A" to
//   a slightly unique value so it'll be picked by default. Dirty hack.
// 65.01:Canon A + A(II) tripod mount ring
// 78:Canon B tripod mount ring
// 81:Canon C tripod mount ring
// 68.5:Canon D tripod mount ring
// 68.5:Canon EF MP-E 65mm f/2.8 macro (D)
// 81:Canon EF 28-300mm f/3.5-5.6 (C)
// 78:Canon EF 70-200mm f/2.8 L (all) (B)
// 65:Canon EF 70-200mm f/4 L (all) (A)
// 81:Canon EF 70-300mm f/4-5.6 L IS USM (C)
// 68.5:Canon EF 100mm f/2.8 L macro IS (D)
// 78:Canon EF 100-400mm f/4.5-5.6 L IS USM (B)
// 68.5:Canon EF 180mm f/3.5 L macro (D)
// 65:Canon EF 200mm f/2.8 L (all) (A)
// 65:Canon EF 300mm f/4 L (A)
// 65:Canon EF 400mm f/5.6 L (A)
// 68:Nikon RT-1 mount ring
// 68:Nikon AF-S 70-200mm f/4 G ED VR (RT-1)
// 80:Nikon AF-S 80-200mm f/2.8 D ED
// 79:Nikon AF-S 200-500mm f/4 E ED VR
// 79:Nikon AF-S 300mm f/4 E PF ED VR

// Custom ring size (mm); select "Custom" from model selection above
ring_custom_dia = 0;

// Inside radius modifier. Add or subtract space (mm) for fitment, padding material, etc.
ring_tolerance = 0;

// Add alignment marks at the outer top and sides of the ring? (makes it easier to rotate camera to common orientations)
add_alignment_marks = "Yes";//[Yes, No]

// Which side of the ring should have the clamp?
clamp_side = 1; //[1:Left (default), -1:Right]

// Clamp bolt diameter (mm) (Default: 1/4")
clamp_bolt_hole_dia = 6.35;

// Width of the tripod foot (not thickness) (mm)
foot_width = 40; //[0:70]
// Length of the tripod foot (+Z) (mm)
foot_length = 55; //[0:100]
// Clearance for your fingers between the ring and the foot (mm)
foot_to_ring = 12;
// Tripod screw diameter (mm) (Default: 1/4"; 3/8" = 9.5mm)
tripod_screw_dia = 6.35;

// Select the hardware you'll use to mate up with the tripod mount screw
tripod_screw_thread_hardware = "tnut"; //[tnut:T-nut (recommended), insert:Threaded insert, nut:Hex nut (not great), none:Bare plastic (not recommended)]

/* [T-nut] */

// Outer diameter of threaded barrel (mm) (Default: Home Depot 802301 - Everbilt 1/4"-20 x 5/16")
t_nut_barrel_dia = 7.5;
// Outer diameter of top flange (mm) (Default: Home Depot 802301)
t_nut_top_dia = 18.47;
// Length of threaded barrel below flange plus any gap between bottom of T-nut and bottom of foot (mm) (Default: Home Depot 802301)
t_nut_elevation = 7.5;

/* [Threaded insert] */

// If using threaded insert, drill diameter recommended for insert (mm) (Default: 3/8" for 1/4-20 brass insert)
thread_insert_drill_dia = 9.5;
// If using threaded insert, insert overall length (mm) (Default: 1/2")
thread_insert_length = 12.7;

/* [Hex nut] */

// Width of captive nut for tripod screw, measured across the points (mm) (1/4" default)
hex_nut_dia = 12.7;

// Thickness of plastic between tripod mount surface and bottom of hex nut (mm) (you may need a longer tripod screw)
hex_nut_elevation = 1;

/* [Build plate visualization] */

// For display only, doesn't contribute to final object
build_plate_selector = 3; //[0:Replicator 2,1: Replicator,2:Thingomatic,3:Manual]
// When Build Plate Selector is set to "manual" this controls the build plate x dimension
build_plate_manual_x = 150; //[100:400]
// When Build Plate Selector is set to "manual" this controls the build plate y dimension
build_plate_manual_y = 150; //[100:400]
build_plate(build_plate_selector,build_plate_manual_x,build_plate_manual_y);

/* [Hidden] */
// No need to modify these, usually

fudge = 0.02;
2fudge = 2*fudge;

// This 65.01 nonsense is haaaackz for Customizer UI, see WORKAROUND note above.
ring_user_dia = ring_model == 0 ? ring_custom_dia : ring_model == 65.01 ? 65 : ring_model;
ring_scale = (ring_user_dia - 65) / (81 - 65);
ring_inner_dia = ring_user_dia + 2*ring_tolerance - 1;
ring_thickness = 8;
ring_width = 18 - 0.5;
ring_segments = 60;
ring_outer_dia = ring_inner_dia + ring_thickness;
ring_outer_circ = PI * ring_outer_dia;
foot_thickness = 14;
foot_rounding_rad = 4;
thread_insert_elevation = 0;
clamp_gap = 17;
clamp_gap_anti_rotation_foot = 4;
clamp_width = clamp_gap + 18; // widened from 18
clamp_height = 15;
clamp_bolt_head_thickness = 5;
clamp_bolt_recess_dia = 2.1*clamp_bolt_hole_dia;
clamp_recess_depth = 3;
// Pick a good angle that allows you to insert the clamp bolt during assembly
clamp_angle_offset = (clamp_width/2 + foot_width/2 + 10 + 5*(ring_inner_dia - 65)/(81-65)) / ring_outer_circ * 360;
clamp_angle = -180 + clamp_side * clamp_angle_offset;
index_ridge_width = 1;
index_ridge_depth = 1;
label_font_size = 12 + 3*ring_scale;

ring_model_name = name_for_dia(ring_user_dia);
use_alignment_marks = add_alignment_marks == "Yes" ? true : false;

// Foot profile polygon (L-shape)
// Starting X coords are at -foot_rounding_rad so rounded part can be cut off
//   in foot().
foot_outline = [
  [-foot_rounding_rad, 0],
  [-foot_rounding_rad, foot_length],
  [foot_thickness - foot_rounding_rad, foot_length],
  [1.5*foot_thickness - foot_rounding_rad, ring_width],
  [foot_thickness + foot_to_ring + ring_outer_dia/2, ring_width],
  [foot_thickness + foot_to_ring + ring_outer_dia/2, 0]
];

mount();

module mount() {
  // Show the user what ring size was selected in preview (but not final render)
  color("Green")
    %ring_size_label();

  difference() {
    union() {
      color("White")
        rotate([0, 0, clamp_angle])
          ring();

      if (use_alignment_marks)
        color("Teal")
          index_marks();

      color("Gray")
        foot();
    }

    // Subtract large center hole from ring + foot.
    translate([0,0,-fudge])
      cylinder(d=ring_inner_dia, h=ring_width + 2fudge, $fn=ring_segments);

    // Cut out gap in clamp + ring
    rotate([0, 0, clamp_angle])
      translate([0, ring_inner_dia/2 - 2, -fudge])
        linear_extrude(height=2*ring_width)
          polygon(points=[
            [-clamp_gap/2 + clamp_gap_anti_rotation_foot, 0],
            [-clamp_gap/2, ring_thickness + clamp_height],
            [clamp_gap/2, ring_thickness + clamp_height],
            [clamp_gap/2 - clamp_gap_anti_rotation_foot, 0]
          ]);

    ring_inner_label(ring_inner_dia, 0.4*ring_width); //0.8*ring_width);
  }
}

module ring_size_label() {
  text(str(ring_user_dia, "mm"), halign="center", valign="center", size=12 + 3*ring_scale);
}

module ring_inner_label(dia, h) {
  text_depth = 1;
  mirror()
    writecylinder(ring_model_name, [0,0,ring_width/2], radius=dia/2, h=h, t=2*text_depth, center=true);
}

module foot() {
  translate([-foot_width/2, -ring_outer_dia/2 - foot_thickness - foot_to_ring, 0])
    rotate([90, 0, 90]) {
      difference() {
        translate([0, -0.1, foot_rounding_rad])
          minkowski() {
            // Extrude foot outline
            linear_extrude(height = foot_width - 2*foot_rounding_rad) {
              offset(delta=-foot_rounding_rad)
                polygon(points=foot_outline);
            }

            // If length and width are 0, minkowski adds a detached sphere. Fix.
            if (foot_width > 0 || foot_length > 0) {
              sphere(r=foot_rounding_rad, $fn=20);
            }
          }

        // Chop off foot, remove rounding radius on foot bottom.
        // Foot is drawn to the left of x=0 by foot_rounding_rad so it can be
        //   discarded here.
        translate([-foot_rounding_rad, 0, 0])
          cube([foot_rounding_rad, foot_length, foot_width]);

        translate([-fudge, ring_width + 10, foot_width/2])
          rotate([0, 90, 0]) {
            if (tripod_screw_thread_hardware == "insert") {
              // THREADED INSERT
              cylinder(d=thread_insert_drill_dia + 0.5, h=thread_insert_length + thread_insert_elevation, $fn=16);
            } else if (tripod_screw_thread_hardware == "tnut") {
              // T-NUT
              cylinder(d=t_nut_barrel_dia, h=2*foot_thickness, $fn=16);
              // Countersink T nut top
              translate([0,0,t_nut_elevation])
                cylinder(d=t_nut_top_dia + 0.5, h=2*foot_thickness, $fn=20);
            } else if (tripod_screw_thread_hardware == "nut") {
              // --- HEX NUT
              cylinder(d=tripod_screw_dia + 1, h=2*foot_thickness, $fn=12);
              // Hex socket for nut
              translate([0,0,hex_nut_elevation])
                cylinder(d=hex_nut_dia + 0.5, h=2*foot_thickness, $fn=6);
            } else {
              // No insert, just a plastic hole. I think yer nuts to put
              // thousands of dollars in camera + glass on a few threads into
              // some plastic.
              cylinder(d=tripod_screw_dia - 0.1, h=foot_thickness, $fn=12);
            }

          }

        // Square off the bottom of the model
        // (`minkowski` was floating the foot off the buld plate by 1 layer)
        translate([0, -2.5, 0])
          cube([2*ring_outer_dia, 5, 2*ring_outer_dia], center=true);

      }
    }
}

module ring() {
  // Main ring cylinder
  cylinder(d=ring_outer_dia, h=ring_width, $fn=ring_segments);
  // Clamp bosses
  translate([0, ring_outer_dia/2 - ring_thickness, 0])
    mirror_if((clamp_angle >= 0 && clamp_angle % 360 < 180) || (clamp_angle % 360 < -180))
      clamp_bosses();
}

module clamp_bosses() {
  difference() {
    // Overall clamp boss outline
    linear_extrude(height = ring_width) {
      polygon(points=[
        [-clamp_width/2, -ring_thickness],
        [-clamp_width/2, clamp_height + ring_thickness],
        [clamp_width/2, clamp_height + ring_thickness],
        [1.5*clamp_width/2, -ring_thickness]
      ]);
    }

    // Clamp boss recess on bolt head side (closest to foot)
    translate([clamp_width/2, 0, 1.5])
      cube([2*clamp_recess_depth, ring_thickness + clamp_height - 1.5, ring_width - 3]);
    // Flat spot for nut/knob to land
    // translate([-clamp_width - clamp_width/2, clamp_height/2 + ring_thickness + clamp_bolt_hole_dia, ring_width/2])
    //   rotate([0, 90, 0])
    //     #cylinder(d=5*clamp_bolt_hole_dia, h=clamp_width, $fn=20);

    // Clamp bolt hole
    translate([0, (clamp_height + ring_thickness) - 1 - clamp_bolt_recess_dia/2, ring_width/2])
      rotate([0, 90, 0]) {
        // Bolt hole
        #cylinder(d=clamp_bolt_hole_dia + 1.5, h=2*clamp_width, center=true, $fn=12);
        // Hex socket to countersink bolt head
        translate([0, 0, clamp_width/2 - clamp_bolt_head_thickness])
          cylinder(d=clamp_bolt_recess_dia, h=2*clamp_width, $fn=6);
      }
  }
}

module index_marks() {
  translate([0, ring_outer_dia/2, 0]) {
    cylinder(d=2*index_ridge_width, h=ring_width, $fn=12);
  }
  translate([-ring_outer_dia/2, 0, 0]) {
    cylinder(d=2*index_ridge_width, h=ring_width, $fn=12);
  }
  translate([ring_outer_dia/2, 0, 0]) {
    cylinder(d=2*index_ridge_width, h=ring_width, $fn=12);
  }
}

module mirror_if(condition) {
  if (condition) {
    mirror() children();
  } else {
    children();
  }
}

function name_for_dia(dia) =
  dia == 65 ?
    "Canon A 65mm"
  : dia == 78 ?
    "Canon B 78mm"
  : dia == 81 ?
    "Canon C 81mm"
  : dia == 68.5 ?
    "Canon D 68.5mm"
  : dia == 68 ?
    "Nikon RT-1 68mm"
  : str(dia, "mm");

```


[User]
I'd like to request a parametric OpenSCAD design for a center finder tool. I have an existing design, but I need it to be completely rewritten and more flexible.

The tool should consist of a central bar with two cylinders attached to its ends, all aligned along the X-axis. The bar should have a hole running through its center, and this hole needs to be tapered at one end to help guide a tool or bit. I want to be able to control the dimensions of all of these features.

Specifically, I want to be able to set the diameter and height of the cylinders, the diameter of the hole, and the overall length of the tool. The bar should be wide as the cylinders and the height should be scaled based on the overall tool length, but with minimums, and the cylinders should also scale with minimums, so no extremely tiny parts. The hole also has a minimum diameter to avoid any problems with the printing of the hole.

I want the design to be fully parametric, with the following adjustable parameters:

*   `cylinderDiameter`:  The diameter of the two cylinders. This should have a default value, and a min and max value that is displayed in the customizer.
*   `cylinderHeight`: The height of the cylinders.  This should have a default value, and a min and max value that is displayed in the customizer.
*   `holeDiameter`:  The diameter of the center hole, including the tapered part. This should have a default value, and a min and max value that is displayed in the customizer.
*    `toolLength`: Overall length of the tool, including the cylinders. The bar length will be the tool length minus the cylinder diameter, plus minimums. This should have a default value, and a min and max value that is displayed in the customizer.

There should be calculated parameters for the bar and cylinder dimensions. These should use minimum values where appropriate.

The bar should have a minimum width and height, and a minimum length, and the cylinders should have a minimum width and height. I'd like minimum values for the hole also. I don't need to set these minimums directly as parameters, but they should be part of the design.

The bar's width should be the same as the cylinder's diameter, and the height should scale with the `toolLength`, but with a minimum. The cylinder's diameter should be at least double the hole's diameter and the height at least half it's diameter, with mins. The cylinders should be placed at the ends of the bar, and the tapered hole should be centered on the bar. All features should be centered.

I'd like the design to echo the computed dimensions of the bar and cylinders.

I'd prefer a single file to keep it simple. No external libraries needed.

[Assistant]
Simple_Center_Finder_Parametric.scad:
```
/* [Hidden] */
$fn=75;
minimumBarW = 3;
minimumBarH = 2;
minimumBarL = 9;
minimumHoleD = 1;

/* [Configure] */
// Cylinders Diameter
cylinderDiameter = 8; // [3:20]
// Cylinders Height
cylinderHeight = 9; // [3:20]
// Hole Diameter
holeDiameter = 3; // [1:7]
// Tool Length
toolLength = 150; // [40:10:500]

minimumCylinderW = holeDiameter * 2 > minimumBarW ? holeDiameter * 2 : minimumBarW;
minimumCylinderH = minimumCylinderW/2;

barHeight = toolLength / 100;
cylinderD = cylinderDiameter < minimumCylinderW ? minimumCylinderW : cylinderDiameter;
barL = toolLength < minimumBarL ? minimumBarL : toolLength - cylinderD;
barH = barHeight < minimumBarH ? minimumBarH : barHeight;
cylinderH = cylinderHeight < minimumCylinderH ? minimumCylinderH + barH : cylinderHeight + barH;
barW = cylinderD;
holeD = holeDiameter < minimumHoleD ? minimumHoleD : holeDiameter;

translate([0,0,barH/2])
	difference()
	{
		cube([barL,barW,barH],center=true);
		cylinder(d=holeDiameter,h=barH+.01,center=true);
		translate([0,0,-barH/4])
			cylinder(d1=holeDiameter*1.75,d2=holeDiameter,h=barH/2+.01,center=true);
	}
translate([barL/2,0,cylinderH/2])
	cylinder(d=cylinderD,h=cylinderH,center=true);
translate([-barL/2,0,cylinderH/2])
	cylinder(d=cylinderD,h=cylinderH,center=true);

echo(str("Bar Dimensions (L,W,H):  (",barL,",",barW,",",barH,")"));
echo(str("Cylinder Dimensions (D,H):  (",cylinderD,",",cylinderH,")"));
```


[User]
Hey, I'm looking to create a parametric calibration tool for my 3D printer bed. I've got an existing OpenSCAD design, but I want to make it more flexible and user-friendly, and I also want to add some visual guides for fine-tuning.

Basically, I need an OpenSCAD design that generates a flat print consisting of a rectangle (or square) outline with a crosshair in the center. Here's what I need it to do:

1.  **Parametric Bed Size:** The user should be able to define the physical dimensions of their build surface. There should be parameters for `bedWidth` and `bedDepth`. If the `bedDepth` is set to 0, then the depth should be calculated based on a `rectangle_ratio` parameter using the given width, otherwise it will use the specified depth.
2.  **Nozzle Line Width:** There needs to be a parameter for `nozzle_line_width` so the outline thickness can adjust.
3.  **Print Height:** The model needs a `print_height` parameter for controlling the thickness of the calibration print. This should also account for the first layer thickness.
4.  **Print Modifier:** A `printModifier` parameter to scale the entire object to ensure it fits even if the center is off. This should work between 0 and 1.
5. **Outline:** The outline needs to be a simple rectangle with the specified width and depth and thickness based on `nozzle_line_width`.
6.  **Crosshair:** A crosshair should be generated in the center of the rectangle. The width of each line of the crosshair should also be based on `nozzle_line_width`.
7.  **Visual Guides:** There needs to be a visual guide to help align the nozzle over the crosshair lines. It is currently done by having four rectangular cutouts in each of the corners, but I would like to try having a circle in the center with a smaller circle removed from the center and a circle removed from each of the four corners (resulting in 5 circular cutouts within the main shape).

Could you generate OpenSCAD files for me that accomplish all of this? It would be great if it was designed to be easily customizable using the customizer tool on Thingiverse. I also don't want to include any external libraries or dependencies for now. Thanks!

[Assistant]
parametric_bed_center_calibration_crosshair.scad:
```
echo(version=version());

// These parameters may be changed
// -------------------------------
// Define the physical build surface size, define the bed width
bedWidth = 200;
// Define the bed depth, or leave 0 to use ratio
bedDepth = 0;

// Define width to depth ratio -> is unused, if "bedDepth" not 0
rectangle_ratio = 1.0;

// Nozzle line width
nozzle_line_width = 0.4;

// Multiple of your z resolution including the first layer thickness
print_height = 0.2;

// Parametric rectangle and crosshair modifier (make the calibration print smaller to fit the bed if the center is off)
printModifier = 0.9; // default = 0.9 i.e. 10 % smaller

union(){
  // Used for redering glitches
  tolerance = 0.5;
  // These parameters are calculated, do not change
  // ----------------------------------------------
  // The parametric square and crosshair will be 10 % smaller
  calcBedWidth = printModifier * bedWidth;
  calcBedDepth = printModifier * (bedDepth == 0 ?  bedWidth*rectangle_ratio : bedDepth);
  calcRectangleRatio = bedDepth == 0 ? rectangle_ratio: bedDepth/bedWidth;
  wallThickness = 2*nozzle_line_width;
  // Crosshair ratio
  crosshairRatio = (2*wallThickness)/calcBedWidth;
  difference(){
    cube([calcBedWidth,calcBedDepth,print_height], center=true);
    translate([0,0,-tolerance/2]);
    for (y=[-1:2:1]){
      for (x=[-1:2:1]){
        translate([x*calcBedWidth/4-x*wallThickness/4,y*calcBedDepth/4-y*wallThickness/4,0])
          cube([calcBedWidth/2-1.5*wallThickness,calcBedDepth/2-1.5*wallThickness,print_height+tolerance], center=true);
      }
    }
  }
  difference(){
    scale([1,calcRectangleRatio,1])
      cylinder(d=calcBedWidth, h=print_height, center=true, $fn=360);
    scale([1-crosshairRatio,calcRectangleRatio-crosshairRatio,1])
      cylinder(d=calcBedWidth, h=print_height+tolerance, center=true, $fn=360);
  }
}
```


[User]
I need an OpenSCAD design for a test piece with a series of through-holes. The holes should be polygons, not circles, and their size should be parametrically adjustable. I'd also like to be able to set the number of sides on the polygon (or have it calculated automatically based on the diameter). I'll need to set an overall offset, spacing between the holes, and the thickness of the piece as well.

Here are the details:

*   **Hole Diameters:** I need to define a list of different hole diameters. These are what I will adjust to test out printing tolerances with my printer.
*   **Diameter Offset:** A single offset value that's applied to each hole diameter. This should allow me to customize the fit of objects I insert into the holes.
*   **Hole Spacing:**  I need to be able to set the distance between the edges of the holes, and the edges of the block.
*   **Part Thickness:** This parameter will determine the depth of the entire test piece.
*   **Polygon Sides:** The number of sides should ideally be 2 * diameter (rounded), but with a minimum of 3. This should provide a good starting point to account for printer resolution and the use of a polygon rather than a true circle.

The holes should be lined up horizontally, and the piece should be a rectangular block with the holes cut through. I would like to be able to customize the dimensions of the block, and not just rely on the auto-calculation, for both the length and width.

Could you generate an OpenSCAD file for this? I'm not using any libraries for now.

[Assistant]
Parametric_Series_of_Polyholes.scad:
```
// A list of hole sizes (mm)
holes = [7.9,9.0,10.0,10.9,11.9,13.1,14.6,15.9,17.6];

// Diameter adjustment for your printer (mm)
offset = 0.25;

// The distance between holes, edges (mm)
spacing = 6;

// The overall depth of the part (mm)
thickness = 10;

function add(v, i = 0, r = 0) = i < len(v) ? add(v, i + 1, r + v[i]) : r;

module polyhole(h, d) {
    n = max(round(2 * d),3);
    rotate([0,0,180]) {
        radius = (d / 2) / cos(180 / n);
        cylinder(h = h, r = radius, $fn = n);
        echo(d, radius, n);
    }
}

difference() {
    cube(size = [add(holes) + spacing * (len(holes) + 1), max(holes) + spacing * 2, thickness]);
    union() {
        for(i = [0:len(holes) - 1]) {
            xloc = [ for(n = [0:i]) holes[n] ];
            translate([add(xloc) + spacing * (i + 1) - holes[i] / 2, max(holes) / 2 + spacing, -1]) {
                polyhole(h = thickness + 2, d = holes[i] + offset);
            }
        }
    }
}
```


[User] I'd like an OpenSCAD design for a calibration cube. I need it to be parametric, so I can adjust the size, and I want to be able to label each axis (X, Y, and Z). I also want the cube to display its size on one face, and the infill percentage on another. It should support both metric and imperial units, with the option to choose between them. I'd like to be able to specify the font used for all the text.

[Assistant]
Calibration_Cube_-_Parametric.scad:
```
// Calibration Cube - Parametric v1.0
//	 Author:	KatTrue (Thingiverse)
//	 Date:		4/30/2017
//
//	This OpenSCAD program creates a user definable sized
//	calibration cube.
//
//	- The X, Y, and Z axis are user definably labeled.
//
//	- Size is printed on one side.  The calibration cube
//	supports both metric and imperial/SAE units of measure.
//
//	- Infill Percentage is printed on one side.  The Infill
//	Percentage is only included on the calibration cube for
//	reference.  The infill percentage is set in the slicer.
//
//	- Due to OpenSCAD font limitations the font will get smaller
//	in relation to the overall size once 380" is exceeded.

/* [Hidden] */
inchConv = 0.79375; // 1/32" in mm
textSizeMult = 4; // Text Size Multiplier
textSizeThreshold = 1544; // Text size to stop scaling text

/* [Configuration ] */
// Dimension Length in Unit of Measure
size = 20; // [1:1000]
// Infill Percentage (Label Only)
infillPct = 10;
// Unit of Measure
unitOfMeasure = 0; // [0:mm,1:1/32in.,2:1/16in.,3:1/8in.,4:1/4in.,5:1/2in.,6:in.]

/* [Text] */
// X Axis Label
xText = "<- X ->";
// Y Axis Label
yText = "<- Y ->";
// Z Axis Label
zText = "<- Z ->";
// Text Font
textFont = "Tahoma";

sizeXYZ = unitOfMeasure ? size * (inchConv * pow(2,unitOfMeasure-1)) : size;
SAEText = unitOfMeasure == 6 ? "\"" : str("/",32/pow(2,unitOfMeasure-1),"\"");
sizeText = unitOfMeasure ? str(round(size),SAEText) : str(sizeXYZ, "mm");
infillText = str(infillPct, "%");
textHeight = sizeXYZ / 25;
textSize = textSizeMult * textHeight > textSizeThreshold ? textSizeThreshold : textSizeMult * textHeight;

translate([0,0,sizeXYZ/2])
	difference()
	{
		cube (size = sizeXYZ, center=true);
		union()
		{
			translate([0,0,(sizeXYZ-textHeight)/2])
				linear_extrude(textHeight)
					text(xText, size=textSize, font=textFont, valign="center", halign="center");
			translate([(sizeXYZ-textHeight)/2,0,0])
				rotate([90,0,90])
					linear_extrude(textHeight)
						text(yText, size=textSize, font=textFont, valign="center", halign="center");
			translate([-(sizeXYZ-textHeight)/2,0,0])
				rotate([90,0,-90])
					linear_extrude(textHeight)
						text(sizeText, size=textSize, font=textFont, valign="center", halign="center");
			translate([0,-(sizeXYZ-textHeight)/2,0])
				rotate([90,-90,0])
					linear_extrude(textHeight)
						text(zText, size=textSize, font=textFont, valign="center", halign="center");
			translate([0,(sizeXYZ-textHeight)/2,0])
				rotate([90,0,180])
					linear_extrude(textHeight)
						text(infillText, size=textSize, font=textFont, valign="center", halign="center");
		} // End union()
	} //End difference()
```


[User]
I'm looking to design a simple stand to hold a razor and a shaving brush. I've got some basic dimensions in mind, but I'd like the design to be parametric so I can easily adjust it later.

Here's what I'm envisioning:

*   **Overall Shape:** The main body of the stand should be a mostly cylindrical shape with a flat bottom. Think of it like a thick disc with a portion cut away at the back.
*   **Razor Holder:** There should be a slot or hole to hold the razor upright. This should be adjustable by diameter and have a short rectangular cutout. The hole will need to be centered at one side of the stand, not in the center of the stand, with the cutout on the outside edge of the disc.
*   **Brush Holder:** Similar to the razor holder, there should be a hole and cutout for the brush, located on the opposite side.
*   **Base:** I need a flat base that extends out from under the cylindrical section, this should be two separate base sections, one under the cylindrical section, and a smaller one under the brush holder section.

Here are the initial dimensions I'm working with, but I want these to be parameters:

*   `razordiameter`: 13mm
*   `brushdiameter`: 26mm
*   `stand_diameter`: 120mm
*   `stand_height`: 50mm
*   `stand_base_thickness`: 3mm
*  `cut_out_depth`: 50mm
*   `razor_holder_offset`: 10mm
*   `razor_holder_height`: 10mm
* `razor_cutout_width`:24mm
*  `razor_cutout_height`:15mm
* `brush_holder_offset`: -44mm
* `brush_holder_height`: 10mm
*  `brush_cutout_width`:30mm
* `brush_cutout_height`:10mm

I'd like the code to be set up to use a `$fn` of 100 for smooth curves and for everything to be easily modifiable with those variable names I just used. I don't need any additional files outside of the main .scad file for this, so no library files needed. And if you could add comments to the code to make it easy for me to understand that would be great.

Oh, one more thing, please don't rotate the object in the code; I can do that easily in the viewer.

[Assistant]
razorStand.scad:
```
razordiameter=13;
brushdiameter=26;

 $fn=100;
 translate([60,0,60]) difference(){
   rotate([0,90,90])difference(){
        cylinder(h=50, d=120);
        translate([0,0,-3]) cylinder(h=55, d=115);
    }
    translate([10,-1,-50])cube([120,52,120]);
    translate([-3,25,52])cylinder(h=10, d=razordiameter);
    translate([-3,(50/2)-(razordiameter/2),52])rotate([0,0,0])cube([24,razordiameter,15]);
}
translate([-46,0,0])cube([100,50,3]);
difference(){
    translate([-44,0,60])cube([45,50,3]);
    translate([-20,25,59])cylinder(h=10, d=brushdiameter);
    translate([-50,(50/2)-(brushdiameter/2),59])cube([30,brushdiameter,10]);
}
```


[User]
Okay, I'm looking to create a custom gasket mold generator in OpenSCAD. I've seen a few designs on Thingiverse, but they don't quite offer all the options I need. I'd like to be able to specify the inner and outer diameter of the gasket, as well as its thickness. I'd also like to have a choice of cross-sectional shapes: square, a rounded square, and an ellipse.

One key feature I want is the ability to choose between a two-part mold and a single open mold. The two-part mold would have alignment cones to make sure they fit properly. I also want the option to add vent channels to the top mold to speed up curing time, and to control the size and number of those channels. Also, it would be useful to specify a tolerance for the alignment cones so that they fit together properly with different printer tolerances.

For larger gaskets, I'd like hollowed-out areas in the mold to save material, and to allow excess silicone to spill over instead of getting trapped between two flat surfaces. I need to be able to specify a wall thickness for these hollow areas, or set it to zero if they aren't needed.

I want to be able to set these parameters, and have the OpenSCAD code generate the appropriate mold geometry. Also it's important to me that you use the rotate_extrude function in order to keep the code compact and maintainable.

Could you help me generate the OpenSCAD code for this? I'm not sure what libraries would be appropriate, but I don't think I need any complicated functionality beyond the basic OpenSCAD features and potentially the `hull` function.

I'm also wondering what file structure is best. Should all of this be in a single SCAD file, or should it be split up into multiple files? I think a single file would be fine for this since there aren't so many components.

[Assistant]
GasketMoldMaker.scad:
```
// Customizable gasket mold maker v1.1
// By DrLex
// Released under Creative Commons - Attribution License

/* [General] */
// Inner diameter of the gasket (millimeters). To account for inaccuracies of printing and molding, you may want to set this to slightly less than the exact value.
InnerDiameter = 10.4; //[6:0.1:100]
// Outer diameter of the gasket. Again, adding a fraction of a mm here could be a good idea.
OuterDiameter = 16.1; //[7:0.1:102]
// The height of the gasket. For a perfectly square or circular profile, this needs to be (OD-ID)/2.
Thickness = 2.8; //[0.1:0.1:40]
// The shape of the gasket cross-section. In general, rounded square is probably preferable.
Shape = "rounded square"; // [square, rounded square, ellipse]
// Instead of a closed two-mold 'sandwich', make a single open mold. The upside is that you only need to print one mold and it will cure faster. The downside is that one side of your gasket will inevitably be square-shaped, and it could be more difficult to remove from the mold.
SingleMold = "no"; //[yes, no]

/* [Advanced] */
// For larger IDs, hollow areas will be created to save material. This is the wall thickness for those areas. You can set it to 0 to make them go all the way through.
InsideWallThickness = 0.8; //[0:0.1:10]

// (The following options are only applicable if SingleMold = no.) The number of vent channels in the top mold. You may want to use more for larger gaskets to reduce curing time.
VentChannels = 4; //[0:16]

// Size of the vent channels. If you want to try injection molding, set the number of channels to 2 and make them large enough to inject silicone through them.
VentChannelSize = 1.2; //[1:0.1:4]

// Tolerance on the alignment cone. You should tweak this such that the molds fit together with no gap in between, and no horizontal play between the halves.
AlignConeTolerance = 0.22; //[0:0.02:0.4]

/* [Hidden] */
GasketCenterRadius = (InnerDiameter + OuterDiameter) / 4;
GasketRadiusX = (OuterDiameter - InnerDiameter) / 4;
GasketRadiusZ = (SingleMold == "no" ? Thickness / 2 : Thickness);
SquishFactor = GasketRadiusZ / GasketRadiusX;

MoldRadius = OuterDiameter / 2 + 1.6;
MoldThickness = GasketRadiusZ + 0.8;

module gasket() {
    rotate_extrude(convexity = 10, $fn = 64)
    translate([GasketCenterRadius, 0, 0])
    if(Shape == "ellipse") {
        scale([1, SquishFactor, 1]) circle(r = GasketRadiusX, $fn = 24);
    }
    else if(Shape == "square") {
        scale([1, SquishFactor, 1]) square(2 * GasketRadiusX, center=true);
    }
    else { // rounded square
        hull() {
            if(SquishFactor > 1.0) {
                Shift = GasketRadiusZ - GasketRadiusX;
                translate([0, Shift, 0]) circle(r = GasketRadiusX, $fn = 24);
                translate([0, -Shift, 0]) circle(r = GasketRadiusX, $fn = 24);
            }
            else {
                Shift = GasketRadiusX - GasketRadiusZ;
                translate([Shift, 0, 0]) circle(r = GasketRadiusZ, $fn = 24);
                translate([-Shift, 0, 0]) circle(r = GasketRadiusZ, $fn = 24);
            }
        }
    }
}

module pieSlices() {
    H = Thickness + 1;
    difference() {
        cylinder(r = InnerDiameter/2 - 1.6, h=H);
        cylinder(r = 4.5, h=H);
        translate([-InnerDiameter/2, -0.75, 0]) cube([InnerDiameter, 1.5, H]);
        translate([-0.75, -InnerDiameter/2, 0]) cube([1.5, InnerDiameter, H]);
        if(InnerDiameter >= 35) {
            rotate([0, 0, 45]) {
                translate([-InnerDiameter/2, -0.75, 0]) cube([InnerDiameter, 1.5, H]);
                translate([-0.75, -InnerDiameter/2, 0]) cube([1.5, InnerDiameter, H]);
            }
        }
        if(InnerDiameter >= 50) {
            difference() {
                cylinder(r = InnerDiameter*0.354 + 0.75, h=H);
                cylinder(r = InnerDiameter*0.354 - 0.75, h=H);
            }
        }
    }
}

union() {
    difference() {
        translate([0, 0, -MoldThickness]) cylinder(h = MoldThickness, r = MoldRadius, $fa=6);
        gasket();
        if(InnerDiameter > 14 ) {
            translate([0, 0, -MoldThickness + InsideWallThickness]) pieSlices();
        }
        if(SingleMold == "no") {
            // Gap for easier opening
            translate([0, MoldRadius, 0]) cube([MoldRadius, 1.6, 1], center=true);
        }
    }
    if(SingleMold == "no") {
        // Create alignment cone with margin for the alignment hole
        cylinder(h = 2.0 - AlignConeTolerance, r1 = 3 - AlignConeTolerance, r2 = 1.0, $fn = 24);
    }
}

if(SingleMold == "no") {
    VentChannelHalfLength = GasketRadiusX + 1;
    translate([5 + 2 * MoldRadius, 0 ,0])
    difference() {
        translate([0, 0, -MoldThickness]) cylinder(h = MoldThickness, r = MoldRadius, $fa=6);
        gasket();
        if(InnerDiameter > 14 ) {
            translate([0, 0, -MoldThickness + InsideWallThickness]) pieSlices();
        }
        for(i=[0 : VentChannels - 1]) {
            rotate([0, 0, i*(360/VentChannels)]) translate([GasketCenterRadius+VentChannelHalfLength, 0, -VentChannelSize/4]) cube(size=[2*VentChannelHalfLength, VentChannelSize, VentChannelSize], center=true);
        }
        // Make this cone slightly larger than necessary to avoid Z-fighting
        translate([0, 0, -3]) cylinder(h = 3.5, r1 = 0, r2 = 3.5, $fn = 24);
        //translate([0, 0, -3]) cylinder(h = 3.0, r1 = 0, r2 = 3.0, $fn = 24);
    }
}
```


[User]
I need a design for a corner guard, like the kind you might use to protect a kid from bumping into sharp furniture corners. I'm looking for something that's rounded, almost like a sphere that's been sliced off by the corner of the furniture.

The key thing is that I need it to be parametric. I need to be able to easily adjust the dimensions to fit different-sized corners. For starters, I'd like to specify a single "corner width" parameter that defines the size of the corner the guard is meant to fit. It should create a sphere with a radius that's a bit larger than the corner's width, so it fully covers it with some extra padding. I want the sphere to be chopped off in a way so that it makes three flat sides that meet to fit flush against the corner.

Ideally, the design should use the provided `corner width` parameter to define an offset that is used to shift the sphere to the corner location and determine the radius so that it doesn't just look like a sphere slapped onto the corner. I imagine the offset will be some fraction of the `corner width`. Also, the design should not be too flat, there should be a rounded portion of the sphere still visible.

Could you generate an OpenSCAD file for this? I don't have a preference on external libraries and am happy for you to create all files needed.

[Assistant]
corner-guard-sphere.scad:
```
// Corner Guards
// -------------

// Corner width to proteced
width = 15;

/* [Hidden] */
offset = width / 3;
radius = width - offset;

translate([offset, offset, offset])
difference() {
    sphere(r=radius, $fn=100);
    translate([-offset, -offset, -offset]) cube([width, width, width]);
}
```


[User]
I'd like to create a design similar to the "Magic Bean" fidget toy, but I want to make it fully parametric. Basically, it's a capsule shape with a hollow interior where a metal ball can roll around. Here's what I'm envisioning:

The overall shape is a capsule created by two hemispheres connected by a cylinder. I need control over the inner diameter of the capsule, which is the diameter of the ball plus a small clearance. I also need control over the wall thickness. Then, there should be a parameter for the length of the cylinder between the hemispheres. I'd prefer to express this length as a fraction of the inner diameter, rather than an absolute dimension.

The final model should be the difference between a solid outer capsule and a solid inner capsule. I should also have an option to do a cross section to see the inner shape more clearly by cutting the model in half with a large bounding box rotated in an arbitrary direction (e.g. 245 degrees about the z-axis) for debug visualization.

I need to be able to easily specify the inner diameter, the wall thickness and the length ratio. It should be easy to set the smoothness resolution using the `$fn` variable.

So to summarize I need the following parameters:

*   `inner_diameter`: The inner diameter of the capsule (the size of the metal ball + a little clearance)
*   `wall_thickness`: The thickness of the capsule wall
*   `length_ratio`: The ratio used to calculate the length of the center cylinder, expressed as a fraction of the inner diameter
*   `$fn`: Resolution for round surfaces

I would like to have two modules:
* `solid_capsule`: for creating solid capsule shapes
* `main`: for generating the difference between the outer and inner capsules.

I also need a debug option, which when set to 1 cuts the model in half to view its profile. I think I can handle that part using a module called `cross_cut`.

Could you create an OpenSCAD file to do this? I do not have any specific needs for external libraries.

[Assistant]
magic_bean.scad:
```

// Pause mid way, drop the metal ball, and continue printing.
// Print vertically with support material from bed. Raft optional.

debug = 0;  // [0, 1]

// Inner diameter. Make this the diameter of the ball with
// a small clearance for free movement.
inner_diameter = 12;

// The thickness of the wall.
wall_thickness = 0.8;

outer_diameter = inner_diameter + 2 * wall_thickness;

// Control the distance between the hemispheres as a fraction
// of inner_diameter. Higher values mean longer capsule.
length_ratio = 1.0;

// Vertial center to center length
c2c = inner_diameter * length_ratio;

// Roundness resolution (higher = smoother and slower to render)
$fn=120;

// Bounding box dimensions
large = 2*(outer_diameter + c2c);

module solid_capsule(d) {
    translate([0, 0, -c2c/2]) cylinder(d=d, h=c2c);
    translate([0, 0, -c2c/2]) sphere(d=d);
    translate([0, 0, c2c/2]) sphere(d=d);
}

module main() {
  difference() {
    solid_capsule(outer_diameter);
    solid_capsule(inner_diameter);
  }
}

module cross_cut() {
  rotate([0, 0, 245])
  difference() {
    main();
    translate([0, 0, -large/2]) cube([large, large, large]);
  }
}

if (debug == 1) {
  cross_cut();
  //translate([0, 0, -c2c/2]) #sphere(d=0.95*inner_diameter);
} else {
    main();
}

```


[User]
Hey, I'm looking to create a customizable fidget star in OpenSCAD, and I've seen some really cool designs out there, but I want something with a specific set of features and parameters. I want to be able to adjust the number of points on the star, the type of weight used in the center, the y to x aspect ratio of the star points, the edge style (beveled or rounded), the edge width, and whether or not there are cutouts in the arms.

Specifically, for the number of points, I'd like to be able to choose between 3, 4, 5, or 6 points. For the weight, I need to be able to use the following options: 608 bearing, 5/16 hex nut, 3/8 hex nut, 1/2 hex nut, M8 hex nut, M10 (16mm) hex nut, M10 (17mm) hex nut, M12 (18mm) hex nut, M12 (19mm) hex nut, M4 square nut, 5/16 ball bearing, 3/8 ball bearing, 1/2 ball bearing, and 5/8 ball bearing. The aspect ratio should be adjustable via a yAspect variable, allowing the point to be taller or shorter than the standard width. The edge style should be either 'beveled' or 'rounded,' and the 'edgeWidth' should control how deep the bevel is or the rounding radius, in mm. Finally, a boolean-like variable 'cutouts' should control the presence or absence of the cutouts on each arm.

I would also like the code to automatically choose the correct resolution for the circular edges of the nut based on the type of nut. So, if it's a hex nut, it should use a $fn of 6, and if it's a square nut, it should use 4. Ball bearings should have a high resolution (e.g. $fn = 60).

Could you generate an OpenSCAD file that allows me to adjust these parameters? I'm not sure how to approach the edge rounding or beveling, or how to best make the cutouts, so it would be great to see how you would do it. Also, I would like the code to be easily readable with meaningful variable names, since I may want to make adjustments later. I do not have any pre-existing OpenSCAD libraries, so please don't include dependencies on any of those.

[Assistant]
edgy-star.scad:
```
// edgy star
// lucina
// 2017-09-30
// preview[view:south, tilt:top]

// the number of points for the star
points = 5;  //[3,4,5,6]
// the type of weight
whichWeight = "5/16 hex nut";   //[608 bearing, 5/16 hex nut, 3/8 hex nut, 1/2 hex nut, M8 hex nut, M10 16 hex nut, M10 17 hex nut, M12 18 hex nut, M12 19 hex nut, M4 square nut, 5/16 ball bearing, 3/8 ball bearing, 1/2 ball bearing, 5/8 ball bearing]
// the y to x aspect ratio for the star points
yAspect = 1.2;  //[1.:0.1:2]
// beveled or rounded edges
edge = "beveled";   //[beveled, rounded]
// edge rounding or beveling in mm
edgeWidth = 3;   //[0:1:7]
// cutouts
cutouts = "yes";  //[yes, no]

/* [Hidden] */
$fn = 60;
x = 0; y = 1; z = 2;
inch = 25.4;
bearing = [22, 22, 7]; //608 bearing
sae = [.577*inch, .5 * inch, 7]; // 5/16 hex nut
sae38 = [.650*inch,.562*inch, 7];	// 3/8
sae12 = [.866*inch, .75*inch, 7];	// 1/2
metric8 = [15, 13, 7];   // M8 hex nut
metric10_16 = [17.77, 16, 7];   // M10 16 hex nut
metric10_17 = [19.6, 17, 7];   // M10 17 hex nut
metric12_18 = [20.03, 18, 7];   // M12 18 hex nut
metric12_19 = [21.9, 19, 7];   // M12 19 hex nut
metric4sq = [7, 7, 3.2];
ball516 = [5/16*inch, 5/16*inch, 5/16*inch];
ball38 = [3/8*inch, 3/8*inch, 3/8*inch];
ball12 = [1/2*inch, 1/2*inch, 1/2*inch];
ball58 = [5/8*inch, 5/8*inch, 5/8*inch];
weight = (whichWeight == "608 bearing") ? bearing :
   (whichWeight == "5/16 hex nut") ? sae :
   (whichWeight == "3/8 hex nut") ? sae38 :
   (whichWeight == "1/2 hex nut") ? sae12 :
   (whichWeight == "M8 hex nut") ? metric8 :
   (whichWeight == "M10 16 hex nut") ? metric10_16 :
   (whichWeight == "M10 17 hex nut") ? metric10_17 :
   (whichWeight == "M12 18 hex nut") ? metric12_18 :
   (whichWeight == "M12 19 hex nut") ? metric12_19 :
   (whichWeight == "M4 square nut") ? metric4sq :
   (whichWeight == "5/16 ball bearing") ? ball516 :
   (whichWeight == "3/8 ball bearing") ? ball38 :
   (whichWeight == "1/2 ball bearing") ? ball12 : ball58;
echo(whichWeight, weight[x], weight[y], weight[z]);
resolution = (whichWeight == "5/16 hex nut") ? 6 :
(whichWeight == "3/8 hex nut") ? 6 :
(whichWeight == "1/2 hex nut") ? 6 :
(whichWeight == "M8 hex nut") ? 6 :
(whichWeight == "M10 16 hex nut") ? 6 :
(whichWeight == "M10 17 hex nut") ? 6 :
(whichWeight == "M12 18 hex nut") ? 6 :
(whichWeight == "M12 19 hex nut") ? 6 :
(whichWeight == "M4 square nut") ? 4 : 60;
echo("resolution=", resolution);

step = 360 / points;
stop = (points-1) * step;
thick = 2.5;
eWidth = ( edge=="rounded") ? min(edgeWidth, 3) : edgeWidth;
space = (eWidth == 0) ? .6 * weight[x] : .49 * weight[x];
yHoleOffset = .3*weight[x] + .5*eWidth;
notchHole = .24*(weight[x]+space);
notchOffset = bearing[x]/2 + (weight[x]+2*space+2*eWidth)*yAspect*.48 + thick -eWidth/2;
cornerHole = (weight[x]+2*space + eWidth) / points * .75;
cornerHoleOffset = bearing[x]/2+thick+ cornerHole/2;

module fcylinder(z, x, rad) {
   minkowski() {
      cylinder(h=z-2*rad, d=x-2*rad, center=true);
         sphere(rad, center=true);
   }
}
module ftriangle(z, x, y, rad) {
   minkowski() {
      scale([y/x, 1, 1])
         cylinder(h=z-2*rad, d=x-2*rad, $fn = 3, center=true);
      sphere(rad, center=true);
   }
}
module pointedTriangle(z, x, y, rad) {
   hull() {
      scale([y/x, 1, 1])
         cylinder(h=z, d=x, $fn = 3, center=true);
      scale([y/x, 1, 1])
         cylinder(h=.5, d=x+2*rad, $fn = 3, center=true);
   }
}

module point(wid, rad) {
   if ( edge == "beveled" )
      pointedTriangle(bearing[z], wid, yAspect*wid, rad);
   else
      ftriangle(bearing[z], wid, yAspect*wid, rad);
}

difference() {
   union() {
      fcylinder(bearing[z], bearing[x] + 2*thick, 2);
      // points
      for ( angle = [0 : step : stop] ) {
         rotate([0, 0, angle])
            translate([bearing[x]/2 + (weight[x]+2*space)*yAspect*.28+eWidth/2, 0, 0])
               point(weight[x]+ 2*space, eWidth);
      }
   }
   // holes
   union() {
      cylinder(h=2*bearing[z], d=bearing[x], center=true);
      for ( angle = [0 : step : stop] ) {
         rotate([0, 0, angle])
            translate([bearing[x]/2 + (weight[x]+2*space)*yAspect*.28+eWidth/2, 0, 0])
               cylinder(h=2*bearing[z], d=weight[x], center=true, $fn=resolution);
         if ( cutouts == "yes" ) {
            rotate([0, 0, angle-step/2])
               translate([bearing[x]/2+thick+ 4*yAspect*cornerHole/2, 0, 0])
                  scale([4*yAspect, 1, 1])
                     cylinder(h=3*bearing[z], d=cornerHole, center=true);
            rotate([0, 0, angle])
               translate([notchOffset, yHoleOffset, 0])
                  cylinder(h=2*bearing[z], d=notchHole, center=true);
            rotate([0, 0, angle])
               translate([notchOffset, -yHoleOffset, 0])
                  cylinder(h=2*bearing[z], d=notchHole, center=true);
         }

      }
   }
}

```


[User]
I need a customizable OpenSCAD design for a rocket fin alignment jig. I have a design that works well, but I need something that's completely parametric. It needs to support a variable number of fins, the jig base diameter, fin slot width, and rocket body tube dimensions.

Specifically, here's what I'm looking for:

*   **Variable Number of Fins:** The jig should work with 2 to 6 fins, adjustable through a variable `nfins`.
*   **Base Diameter:** The jig's base needs to have a customizable diameter set with variable `base_diam`.
*   **Wall Thickness:** I need to be able to control the wall thickness using a variable `wall_th`.
*   **Body Tube:** The jig needs to accommodate different sized rocket body tubes. The tube's inner diameter should be customizable with variable `tube_id` and the insert length with `insert_len`.
*   **Body Tube Stop:** I need a stop feature at the end of the insert with adjustable thickness via `stop_th` and a length of the stop with `stop_len`.
*   **Fin Slots:** The slot width for the fins should be adjustable through `slot_width`.
*   **Fin Alignment Bosses:** The bosses for the fin alignment should have clearance around the body tube with variable `boss_clear` and adjustable boss height via `fbht`.
*   **Fin Extension:** The fins sometimes extend below the end of the body tube, so this should be configurable with variable `slot_extend`.
*   **Glue Clearance:** There needs to be some clearance for glue drips at the base, set with variable `glue_clear`.
*   **Engine Hook:** An optional feature to account for an engine hook with variables `hook_width` and `hook_depth`.

I'd like this to be a single OpenSCAD file. Please don't use any external libraries. I've attached the original code for reference, but don't worry about trying to modify that - I'd prefer a new file from scratch.

[Assistant]
Customizable_rocket_fin_alignment_jig.scad:
```
// Copyright 2017 Arthur Davis (thingiverse.com/artdavis)
// This file is licensed under a Creative Commons Attribution 4.0
// International License.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
// A customizable jig for aligning and gluing fins
// onto model rockets.

// Optimize view for Makerbot Customizer:
// preview[view:south east, tilt:top diagonal]

// Number of fins
nfins = 3; // [2:1:6]
// Diameter of the base stand
base_diam = 100; // [0:10:200]
// Wall feature thickness
wall_th = 2.0; // [0.2:0.2:6.0]
// Body tube inner diameter
tube_id = 23.8; // [10.0:0.1:50.0]
// Length of the body tube insert
insert_len = 25; // [10:0.2:60]
// Thickness at end of body tube insert to act as a stop
stop_th = 1.0; // [0.2:0.1:5]
// Length of the body tube stop
stop_len = 25; // [1:0.2:20]
// Slot width to fit thickness of rocket fins
slot_width = 2.6; // [0.2:0.1:10]
// Clearance between rocket body and fin alignment bosses
boss_clear = 4.0; // [0:1:20]
// How far below the end of the body tube the fins extend
slot_extend = 0; // [0:1:60]
// Height of fin alignment bosses
fbht = 50; // [10:1:100]
// Clearance for glue drips on the stop and insert
glue_clear = 1.2; // [0:0.2:3]
// Clearance width for accomodating an engine hook
hook_width = 4.0; // [0:0.2:10]
// Depth of the slot for accomodating an engine hook
hook_depth = 5.0; // [0:0.2:10]

/* [Hidden] */
// Special variables for facets/arcs
$fn = 48;
// Incremental offset to make good overlap for CSG operations
delta = 0.1;
// Thickness of fin alignment bosses
fbth = 2*wall_th + slot_width;
// Included angle between fins
fin_ang = 360 / nfins;
// Diameter of the "stop" cylinder
stop_diam = tube_id + 2*stop_th;
// The stop cylinder feature length needs to be at least
// as long as the slot extension. Choose the greater
// for the value to use as the actual feature height.
stop_len_1 = (slot_extend < stop_len) ? stop_len : slot_extend;

// Clearance geometry for stop and insert
module cleargeom() {
    clrth = slot_width + 2*glue_clear;
    cylht = wall_th + stop_len_1 + insert_len + delta;
    union() {
        for (i=[0:nfins-1]) {
            rotate(a = [0, 0, i * fin_ang]) {
                translate(v = [tube_id/2 - glue_clear, -clrth/2, 0]) {
                    // Clearance slot
                    cube(size = [base_diam/2, clrth, cylht]);
                }
            }
        }
        // Also include geometry that will make clearence for an
        // engine hook
        rotate(a = [0, 0, fin_ang/2]) {
            translate(v = [tube_id/2 - hook_depth, -hook_width/2, 0]) {
                // Clearance slot
                cube(size = [base_diam/2, hook_width, cylht]);
            }
        }
    }
}

// Fin boss
module finboss(ang=0) {
    cylht = wall_th + fbht + delta;
    slot_plane = wall_th + stop_len_1 - slot_extend;
    difference() {
        rotate(a = [0, 0, ang]) {
            // Cut out the fin slots
            difference() {
                // Trim fin slot boss to Base Diameter
                intersection() {
                    cylinder(h=cylht, d=base_diam);
                    translate(v = [0, -fbth/2, wall_th]) {
                        // Fin slot boss
                        cube(size = [base_diam/2, fbth, fbht]);
                    }
                }
                translate(v = [0, -slot_width/2, slot_plane]) {
                    // Fin slot
                    cube(size = [base_diam, slot_width, fbht + delta]);
                }
            }
        }
        translate(v=[0, 0, delta]){
            cylinder(h=cylht, d=stop_diam + 2*boss_clear);
        }
    }
}

// Create main base
module base() {
    union() {
        cylinder(h=wall_th, d=base_diam);
        translate(v=[0, 0, wall_th]){
            // Glue clerance slot cuts
            difference() {
                union() {
                    // Body tube stop cylinder
                    cylinder(h=stop_len_1, d=stop_diam);
                    translate(v=[0, 0, stop_len_1]){
                        // Body tube insert
                        cylinder(h=insert_len, d=tube_id);
                    }
                }
                // Glue clearence slots
                cleargeom();
            }
        }
        for (i=[0:nfins-1]) {
            finboss(i * fin_ang);
        }
    }
}

base();
```


[User]
I'd like a customizable heat tower design for testing 3D printer filament temperatures. I want to be able to specify the temperature labels for each step, the height and radius of the steps, the text size and depth, and the font used for the labels. It would be nice if the tower could be cut diagonally at each step to make it easy to tell the steps apart. Also, I need to be able to rotate the final model.

Specifically, I want:

*   A comma-separated list of temperature labels that are displayed on each step, from top to bottom.
*   The step radius and height to be customizable.
*   The text depth, size, and font to be customizable.
*   A diagonal cut at each step to distinguish them visually. I'd like the cuts to be configurable, in terms of shape or angle.
*   The ability to rotate the entire tower by a specified angle.

I need the output to be a single OpenSCAD file that includes the parametric design based on those options. I don't need any pre-existing OpenSCAD libraries used here, just basic OpenSCAD functions, so you can start from scratch.

[Assistant]
heat_tower.scad:
```
// Customizeable heat tower.
// Inspired by Thingieverse #2213410
// String functiosn from Thingiverse #1237203

// Comma seperated list of step labels, from top to bottom
label_list = "180,185,190,195,200,205";

text_depth = 0.4;

text_size = 3;

text_font = "Helvetica:black";

// Roudness resolution
$fn=32;

// Rotation angle to have the best view in Thingiverse.
rotation = -90;

/* [Hidden] */

// Step radius
r=10;

// Step height
h=5;

d = 2*r;

eps1 = 0.01;
eps2 = 2 * eps1;

function strcat(v, sep="", str="", i=0, j=0) =
	i == len(v) ? str :
	j == len(v[i])-1 ? strcat(v, sep,
		str(str, v[i][j], i == len(v)-1 ? "" : sep),   i+1, 0) :
	strcat(v, sep, str(str, v[i][j]), i, j+1);

function split(str, sep=",", i=0, word="", v=[]) =
	i == len(str) ? concat(v, word) :
	str[i] == sep ? split(str, sep, i+1, "", concat(v, word)) :
	split(str, sep, i+1, str(word, str[i]), v);

module uncut_step() {
  h1 = h + eps1;
  cylinder(r=r, h=h1);
  translate([0, -r, 0]) cube([r, 2*r, h1]);
  translate([-r, 0, 0]) cube([r, r, h1]);
}

// Diagonal cut
module step_cut() {
translate([0, 0.5*r-eps1, -eps1])
rotate([45, 0, 0])
translate([-2*r, 0, -1*r])
cube([4*r, 1*r, 1*r]);
}

module step_text(msg) {
 translate([r-eps1, -r*0.15, h/2])
 rotate([0, 90, 0])
 rotate([0, 0, 90])
 linear_extrude(height = text_depth+eps1)
   text(msg, halign="center",valign="center", size=text_size+eps1, font=text_font);
}

module step_mark() {
  translate([r-eps1, -r, 0])
  cube([text_depth+eps1, text_size, text_size*0.15]);
}

module step(msg) {
  difference() {
    uncut_step();
    step_cut();
    rotate([0, 0, 45]) step_cut();
  }
  step_text(msg);
  step_mark();
}

module main() {
  labels = split(label_list);
  n = len(labels);
  for (i = [1 : n]) {
    translate([0, 0, (i-1)*h]) step(labels[n-i]);
  }
}

rotate([0, 0, rotation])
main();

```