[User]
I need an OpenSCAD design for a customizable mounting plate, kind of like a spacer. It should have a base plate, and then optional mounting plates that extend to the left and right. I'd like to be able to specify the length of the base plate, and the width of the left and right mounting plates. All of these should be in millimeters, and I want to be able to set the thickness of the plate as well. Oh, and an offset for how far away it is from whatever it's mounted on; also in mm.

It needs to have the option for rounded corners, and if that's on, a radius to control them. If not, just square corners.

I'm working with some 2020 aluminum extrusion, so a ridge for aligning to it would be useful, and I'd like that to be optional too.

I will also need to add up to 10 mounting holes, each with its own X and Y position and a diameter. The X positions can be negative for the left plate and positive for the right plate. Y will always be positive, measured from the top edge of the base plate. And make sure the holes go all the way through, through both the main plate and any offset if there is one.

One last thing; I'd like a help grid to show up in the preview, which would let me visually measure everything I'm doing, but with a way to turn it off for the final design. It should have a variable spacing, and an outline of where the 2020 frame would be to make sure my holes are far enough away from it. A red line to show the base line would be great too.

I think that's it. Could you write that up for me? It would be great if you could give me some comments on each parameter when the customizer comes up.

[Assistant]
mount_spacer3.scad:
```
//By Coat, 29-jul-2018
//Licensed under the Creative Commons - Attribution license.

//primary parameters

/*[The Base]*/
//The height of the plate (mm, Y direction)
platelength = 20; //[0:0.1:200]
//The width for mountingplate at the left side (mm, X-direction to the left)
platewidthleft = 10; //[0:0.1:200]
//The width for mountingplate at the right side (mm,, X-direction to the right)
platewidthright = 10; //[0:0.1:200]
//Thickness of the mounting plate (mm, left and right, Z-direction)
platethick = 3; //[0:0.1:20]
//The offset of the plate from the object you will put it on (mm, Z-direction)
plateoffsetdepth = 0; //[0:0.1:100]
//Round corners Yes (1) or No (0)
roundcorner = 1;
//If using round corners use this radius (mm)
cornerrad = 2; //[0:0.1:20]
//Ridge for aligning 2020 alu frame , Yes (1) or No (0)
ridge2020 = 0;
/*[The optional Helpgrid]*/
//Helpgrid, 0 is none, >0 is line distance in mm. Do'nt forget to set it back to 0 (off) when your done.
helpgridmm = 0; //[0:20]

/*[Hole 1]*/
//Give the X-position in mm. Negative for left side, positive for right side.
mhole01x = 0; //[-200:0.1:200]
//Give the Y-position, always positive
mhole01y = 10; //[0:0.1:200]
//And give the diameter of the hole
mhole01diam = 4.5; //[0:0.1:200]

/*[Hole 2]*/
//Give the X-position in mm. Negative for left side, positive for right side.
mhole02x = 0; //[-200:0.1:200]
//Give the Y-position, always positive
mhole02y = 0; //[0:0.1:200]
//And give the diameter of the hole
mhole02diam = 4.5; //[0:0.1:200]

/*[Hole 3]*/
//Give the X-position in mm. Negative for left side, positive for right side.
mhole03x = 0; //[-200:0.1:200]
//Give the Y-position, always positive
mhole03y = 0; //[0:0.1:200]
//And give the diameter of the hole
mhole03diam = 4.5; //[0:0.1:200]

/*[Hole 4]*/
//Give the X-position in mm. Negative for left side, positive for right side.
mhole04x = 0; //[-200:0.1:200]
//Give the Y-position, always positive
mhole04y = 0; //[0:0.1:200]
//And give the diameter of the hole
mhole04diam = 4.5; //[0:0.1:200]

/*[Hole 5]*/
//Give the X-position in mm. Negative for left side, positive for right side.
mhole05x = 0; //[-200:0.1:200]
//Give the Y-position, always positive
mhole05y = 0; //[0:0.1:200]
//And give the diameter of the hole
mhole05diam = 4.5; //[0:0.1:200]

/*[Hole 6]*/
// Give the X-position in mm. Negative for left side, positive for right side.
mhole06x = 0; //[-200:0.1:200]
//Give the Y-position, always positive
mhole06y = 0; //[0:0.1:200]
//And give the diameter of the hole
mhole06diam = 4.5; //[0:0.1:200]

/*[Hole 7]*/
//Give the X-position in mm. Negative for left side, positive for right side.
mhole07x = 0; //[-200:0.1:200]
//Give the Y-position, always positive
mhole07y = 0; //[0:0.1:200]
//And give the diameter of the hole
mhole07diam = 4.5; //[0:0.1:200]

/*[Hole 8]*/
//Give the X-position in mm. Negative for left side, positive for right side.
mhole08x = 0; //[-200:0.1:200]
//Give the Y-position, always positive
mhole08y = 0; //[0:0.1:200]
//And give the diameter of the hole
mhole08diam = 4.5; //[0:0.1:200]

/*[Hole 9]*/
//Give the X-position in mm. Negative for left side, positive for right side.
mhole09x = 0; //[-200:0.1:200]
//Give the Y-position, always positive
mhole09y = 0; //[0:0.1:200]
//And give the diameter of the hole
mhole09diam = 4.5; //[0:0.1:200]

/*[Hole 10]*/
//Give the X-position in mm. Negative for left side, positive for right side.
mhole10x= 0; //[-200:0.1:200]
//Give the Y-position, always positive
mhole10y = 0; //[0:0.1:200]
//And give the diameter of the hole
mhole10diam = 4.5; //[0:0.1:200]

module corner(cr, pt)
{
  if (roundcorner)
  {
    $fn = 32;
    cylinder(r=cr, h = pt);
  }
  else
  {
    $fn = 4;
    rotate([0,0,45])
    cylinder(r=sqrt(2)*cr, h = pt);
  }
}

module hullplate(dwr,dwl,dh,cr,pt)
{
  hull()
  {
    translate([dwr, dh,0])    //topright
      corner(cr, pt);
    translate([dwl, dh,0])    //topleft
      corner(cr, pt);
    translate([dwl, -dh,0])   //bottomleft
      corner(cr, pt);
    translate([dwr, -dh,0])   //bottomright
      corner(cr, pt);
  }
}

module plate()
{
  union()
  {
    color("Yellow")
    hullplate(platewidthright - cornerrad2,    //width right side Mplate
              -platewidthleft + cornerrad2,    //width left side Mplate
              0.5*platelength - cornerrad2,    //height Mplate
              cornerrad2,                      //cornerradius
              platethick);                    //thickness Mplate

    if(plateoffsetdepth!=0)
      color("MediumSeaGreen")
      translate([podx,0,-plateoffsetdepth])
         hullplate(0.5*podw-cornerrad2,         //width right side offsetplate
                   -0.5*podw+cornerrad2,        //width left side offsetplate
                   0.5*platelength-cornerrad2,  //height offsetplate
                   cornerrad2,                  //same cornerradius
                   plateoffsetdepth);          //thickness offsetplate

    if(ridge2020)
       color("DarkOrange")
       translate([rx,0,-0.5*rt - plateoffsetdepth])
         cube([rw,platelength,rt], center = true);
  }
}

module mountinghole(xmh,ymh,diamh)
{
  if (xmh!=0||ymh!=0)
  {
     $fn=32;
     translate([xmh,-ymh,0])
       cylinder(d = diamh, h = 3*(platethick + rt + plateoffsetdepth), center=true);
  }
}

module helpgrid(wl,wr,hp,tp,dg)
{
  linew = 0.4;               //width gridlines
  for(i = [0:dg:floor(wl)])  //grid left vertical
  {
    color([0,1,0]) translate([-i,-0.5*hp,tp])
      cube([linew,hp,linew], center = true);
  }
  for(i = [0:dg:floor(hp)])  //grid left horizontal
  {
    color([0,1,0]) translate([-0.5*wl,-i,tp])
      cube([wl,linew,linew], center = true);
  }
  for(i = [0:dg:floor(wr)])   //grid right vertical
  {
     color([0,0.5,0]) translate([i,-0.5*hp,tp])
     cube([linew,hp,linew], center = true);
  }
  for(i = [0:dg:floor(hp)])  //grid right horizontal
  {
    color([0,0.5,0]) translate([0.5*wr,-i,tp])
      cube([wr,linew,linew], center = true);
  }
  color([1,0,0]) translate([0,-0.5*hp,tp])  //0-line
    cube([linew*2,hp,linew], center = true);
  color([1,0,0,0.2]) translate([0,-0.5*hp,tp]) //2020-frame-zone
    cube([podw,hp,linew/2], center = true);
}

//Main
//secondary parameters
rx = 0;    //position ridge
rt=1.4;     //thickness ridge
rw = 5.8; //width ridge
podx =0;  //position offsetplate;
podw =20; //width offsetplate

//recalculated parameters
cornerrad2 = min(max(cornerrad,1), 0.5*platelength, 0.5* (platewidthleft + platewidthright));  //max -> you need a radius also with square. min -> radius can't be bigger than the half of the buidsizes.

//the Thing
difference()
{
  union()
  {
    translate([0,-0.5*platelength,0])
      plate();
    if(helpgridmm > 0)
      helpgrid(platewidthleft, platewidthright, platelength, platethick,helpgridmm);
  }
  mountinghole(mhole01x,mhole01y, mhole01diam);
  mountinghole(mhole02x,mhole02y, mhole02diam);
  mountinghole(mhole03x,mhole03y, mhole03diam);
  mountinghole(mhole04x,mhole04y, mhole04diam);
  mountinghole(mhole05x,mhole05y, mhole05diam);
  mountinghole(mhole06x,mhole06y, mhole06diam);
  mountinghole(mhole07x,mhole07y, mhole07diam);
  mountinghole(mhole08x,mhole08y, mhole08diam);
  mountinghole(mhole09x,mhole09y, mhole09diam);
  mountinghole(mhole10x,mhole10y, mhole10diam);
}

```


[User]
I need a parametric OpenSCAD design for a toilet paper spindle. I want it to be in two halves that slide together, held in place by a compression spring. The design needs to account for several key dimensions, which I'll provide below. I'm hoping you can generate all the necessary `.scad` files for this, including any helper modules if you think they're necessary. I'm not too particular about the specific libraries used, but I do have a preference for those with high usability and reliability.

Here are the key dimensions I'm thinking of in millimeters:

*   **Outer Diameter (p\_outer\_diameter):** 38.1 mm. This is the widest part of the spindle that sits outside the toilet paper roll core.
*   **Shoulder Diameter (p\_shoulder\_diameter):** 17 mm. This is the diameter of the smaller end of the spindle that rests inside my holder.
*   **Shoulder Length (p\_shoulder\_length):** 5 mm. The length of the shoulder part.
*  **Maximum Barrel Length (p\_max\_barrel\_length):** 128 mm. This is the total length of the spindle when assembled, not counting the tabs, and represents its maximum extension.
*   **Minimum Barrel Length (p\_min\_barrel\_length):** 118 mm. The shortest compressed length the spindle can be in its assembled state.
*   **Spring Rest Length (p\_spring\_rest\_length):** 77 mm. This is the length of the cylindrical cavity for the spring when the spindle is compressed to its maximum length.
*   **Spring Diameter (p\_spring\_diameter):** 19 mm. This is the diameter of the spring.
*   **Wall Thickness (p\_wall\_thick):** 0.8 mm. The thickness of the material for the spindle walls.
*   **Tab Length (p\_tab\_length):** 4 mm. The length of the small cut-out tabs on the inner half.
*   **Tab Cut (p\_tab\_cut):** p\_outer\_diameter * 0.3. This determines the depth and width of those tabs.
*   **Clearance (p\_clearance):** 0.2 mm. The amount of space between sliding parts to allow for smooth motion.
*    **Hook Depth (p\_hook\_depth):** p\_clearance + 0.9. This defines the hook that holds the parts together before spring compression.
*  **Slope (p\_slope):** 1.0. This controls the angle of the slope at the end of the spring cavity.

I'd like the design to have a slight "hook" at the end of the main barrel sections that mate together before spring compression begins, that is defined by p\_hook\_depth and p\_slope. The internal cavity for the spring should have flat sides for most of its length, but it should have a slope at the far end. The spring should be preloaded, which means the spring cavity should be slightly shorter than the spring itself, as I specified above.

Finally, I need the inner half to have four tabs (at 0, 90, 180, and 270 degrees) that will engage with the outer half to prevent the inner half from twisting when the spring is compressed. These tabs should be cylindrical cuts and terminate in a chamfer or cone shape to help guide the two halves together.

I think that covers everything. Can you generate the OpenSCAD code for this?

[Assistant]
toilet-roll.scad:
```
/* chosen special dimensions, mm */
p_clearance = 0.2;
p_hook_depth = p_clearance + 0.9;
p_slope = 1.0;

/* chosen dimensions, mm */
p_outer_diameter = 38.1;
p_shoulder_diameter = 17;
p_shoulder_length = 5;
p_max_barrel_length = 128;
p_min_barrel_length = p_max_barrel_length - 10;
p_spring_rest_length = 77;
p_spring_diameter = 19 + p_clearance;
p_wall_thick = 0.8;
p_tab_length = 4;
p_tab_cut = p_outer_diameter * 0.3;

// intermediate useful quantities
inner_outer_diameter = p_outer_diameter - (p_wall_thick + p_hook_depth + p_clearance) * 2;
spring_flat_half_length = p_spring_rest_length / 2;
spring_taper_half_length = spring_flat_half_length - p_slope * (inner_outer_diameter - p_wall_thick - p_spring_diameter)/2;
compression_length = p_max_barrel_length - p_min_barrel_length;
echo(compression_length);

// z-length of the hook
hook_length = p_hook_depth / p_slope;
// length of one half up to the hook
visible_shell_length = p_max_barrel_length / 2 + p_hook_depth;
// length of one half behind the hook
hidden_shell_length = spring_taper_half_length - compression_length - hook_length * 2;

hook_z = hidden_shell_length;
shell_end_z = visible_shell_length + hidden_shell_length;
spring_flat_z = hook_z + spring_flat_half_length;
spring_taper_z = hook_z + spring_taper_half_length;

if (false) {
    clearance_test();
} else {
    difference() {
        printing_parts();
        *cube([1000, 1000, 1000]);
    }
}

module clearance_test() {
    difference() {
        union() {
            assembled(0);
            translate([0, p_outer_diameter * 2, 0]) assembled(compression_length / 2);
        }

        translate([0, -500, -500])
        cube([1000, 1000, 1000]);

    }

    module assembled(compression_half) {
        translate([0, 0, -hidden_shell_length - hook_length - compression_half])
        outer_part();

        rotate([0, 180, 0])
        translate([0, 0, -hidden_shell_length - hook_length - compression_half])
        inner_part();

    }
}

module printing_parts() {
    outer_part();

    translate([50, 0, 0])
    inner_part();
}

module outer_part() {
    roll_3d(p_outer_diameter, hook_outer=false);
}

module inner_part() {
    roll_3d(inner_outer_diameter, hook_outer=true);
}

module roll_3d(outer_diameter, hook_outer) {
    difference() {
        rotate_extrude(angle=90)
        roll_hollowed(outer_diameter, hook_outer);

        if (hook_outer) {
            cut_z = hook_z + p_tab_length;
            cut_dia = p_tab_cut;
            for (i = [0:3]) {
                rotate([0, 0, i * 90])
                translate([0, -p_outer_diameter * 0.4, hook_z]) {
                    cylinder(d=cut_dia, h=p_tab_length*2, center=true);
                    translate([0, 0, p_tab_length - 0.01])
                    cylinder(d1=cut_dia, d2=0, h=cut_dia / 2);
                }
            }
        }
    }
}

module roll_hollowed(outer_diameter, hook_outer=false) {
    difference() {
        roll_polygon(outer_diameter, slope=p_slope / 2, hook=hook_outer);
        interior_polygon(outer_diameter, hook=!hook_outer);
    }
}

module roll_polygon(outer_diameter, slope, hook=false) {
    end_slope_z = shell_end_z - slope * (outer_diameter - p_shoulder_diameter)/2;
    polygon([
        [0, 0],
        [outer_diameter/2, 0],
        [outer_diameter/2, hook_z],
        [outer_diameter/2 + (hook?1:0) * p_hook_depth, hook_z + hook_length],
        [outer_diameter/2, hook_z + hook_length],
        // spring_taper_z is the same as how far the parts slide together
        [outer_diameter/2, spring_taper_z],
        [p_outer_diameter/2, spring_taper_z + (p_outer_diameter - outer_diameter)/2],
        [p_outer_diameter/2, end_slope_z],
        [p_shoulder_diameter/2, shell_end_z],
        [p_shoulder_diameter/2, shell_end_z + p_shoulder_length],
        [0, shell_end_z + p_shoulder_length],
    ]);
}

module interior_polygon(outer_diameter, hook=false) {
    inner_r = outer_diameter/2 - p_wall_thick;
    bottomz = hook_z + (hook ? -1 : p_wall_thick);
    hook_inset = (hook?1:0) * p_hook_depth;
    polygon([
        [0, 0],
        [inner_r - hook_inset, 0],
        [inner_r - hook_inset, max(0, bottomz)],
        [inner_r - hook_inset, hook_z + hook_length],
        [inner_r, hook_z + hook_length],
        [inner_r, spring_taper_z],
        [p_spring_diameter / 2, spring_flat_z],
        [0, spring_flat_z],
    ]);
}
```


[User]
I need to create a parametric winder for Ryobi string trimmer spools. It needs to be compatible with both the 7-tooth and 15-tooth spools. The basic idea is a central rod that can be gripped by a drill chuck, connected to a cone that interfaces with the spool's central hole, and then a gear section that engages the spool teeth.

The gear section needs to have a configurable tooth count (either 7 or 15). The gear needs to engage with the existing spool teeth. Can we make all of these sizes parametric so I can easily modify it for other spools in the future? I'd like to specify the outer diameter of the gear, the inner diameter (the hole in the middle of the gear), the inner and outer radius of the teeth, the curved inner diameter of the teeth, the depth of the gear, and the base depth.

The cone should also be configurable with a base diameter, a diameter at the small end (where it meets the rod), and a length. The rod that attaches to the drill chuck needs to have a diameter, length, and number of sides. Also, it would be good to add a slight bevel to the end of the rod to help it fit in the drill chuck.

Essentially, all of the values I see in the original file need to be configurable.

```scad
// Created in 2018 by Ryan A. Colyer.
// This work is released with CC0 into the public domain.
// https://creativecommons.org/publicdomain/zero/1.0/
//
// https://www.thingiverse.com/thing:3024616

teeth_count = 7;
//teeth_count = 15;

teeth_count_sizing = 15;
outer_diam = 43;
inner_diam = 39;
teeth_inner = 26/2 + 2;
teeth_outer = 26/2 + 5.5;
teeth_innercurvdiam = 2;
gear_depth = 3;
base_depth = 2;
$fa=1;
$fs=0.4;
cone_base_diam = 14;
rod_diam = 9;
cone_len = 18;
rod_len = 22;
rod_edges = 6;

module Gears() {
  difference() {
    cylinder(d=outer_diam, h=gear_depth);
    translate([0, 0, -0.01])
      cylinder(d=inner_diam, h=gear_depth+0.02);
  }

  for (t=[0:teeth_count-1]) {
    rotate([0, 0, t*360/teeth_count])
      translate([teeth_inner, 0, 0])
        Tooth();
  }
}

module Cone() {
  translate([0, 0, gear_depth-0.001])
    cylinder(d1=cone_base_diam, d2=rod_diam, h=cone_len-gear_depth+0.001,
             $fn=rod_edges);
  cylinder(d=cone_base_diam, h=gear_depth, $fn=rod_edges);
}

module Rod() {
  cylinder(d=rod_diam, h=rod_len, $fn=rod_edges);
  translate([0, 0, rod_len-0.001])
    cylinder(d1=rod_diam, d2=rod_diam*2/3, h=rod_diam/3, $fn=rod_edges);
}

cylinder(d=outer_diam, h=base_depth);
translate([0, 0, base_depth-0.001])
  Gears();

translate([0, 0, base_depth-0.001])
  Cone();
translate([0, 0, cone_len-0.002])
  Rod();

module Tooth() {
  teeth_outer_width = teeth_outer * tan(360/teeth_count_sizing);
  translate([teeth_innercurvdiam/2, 0, 0])
  hull() {
    translate([0, -teeth_innercurvdiam/2, 0])
      cylinder(d=teeth_innercurvdiam, h=gear_depth);
    translate([teeth_outer - teeth_inner,
               0,
               0])
      scale([1, 2*teeth_outer_width / teeth_innercurvdiam, 1])
        intersection() {
          cylinder(d=teeth_innercurvdiam, h=gear_depth);
          translate([-teeth_innercurvdiam/2-0.001,
                     -teeth_innercurvdiam/2-0.001,
                     -0.001])
            cube([teeth_innercurvdiam+0.002,
                  teeth_innercurvdiam/2+0.001,
                  gear_depth+0.002]);
        }
  }
}
```

[Assistant]
trimmer_winder.scad:
```
// Created in 2018 by Ryan A. Colyer.
// This work is released with CC0 into the public domain.
// https://creativecommons.org/publicdomain/zero/1.0/
//
// https://www.thingiverse.com/thing:3024616

teeth_count = 7;
//teeth_count = 15;

teeth_count_sizing = 15;
outer_diam = 43;
inner_diam = 39;
teeth_inner = 26/2 + 2;
teeth_outer = 26/2 + 5.5;
teeth_innercurvdiam = 2;
gear_depth = 3;
base_depth = 2;
$fa=1;
$fs=0.4;
cone_base_diam = 14;
rod_diam = 9;
cone_len = 18;
rod_len = 22;
rod_edges = 6;

module Gears() {
  difference() {
    cylinder(d=outer_diam, h=gear_depth);
    translate([0, 0, -0.01])
      cylinder(d=inner_diam, h=gear_depth+0.02);
  }

  for (t=[0:teeth_count-1]) {
    rotate([0, 0, t*360/teeth_count])
      translate([teeth_inner, 0, 0])
        Tooth();
  }
}

module Cone() {
  translate([0, 0, gear_depth-0.001])
    cylinder(d1=cone_base_diam, d2=rod_diam, h=cone_len-gear_depth+0.001,
             $fn=rod_edges);
  cylinder(d=cone_base_diam, h=gear_depth, $fn=rod_edges);
}

module Rod() {
  cylinder(d=rod_diam, h=rod_len, $fn=rod_edges);
  translate([0, 0, rod_len-0.001])
    cylinder(d1=rod_diam, d2=rod_diam*2/3, h=rod_diam/3, $fn=rod_edges);
}

cylinder(d=outer_diam, h=base_depth);
translate([0, 0, base_depth-0.001])
  Gears();

translate([0, 0, base_depth-0.001])
  Cone();
translate([0, 0, cone_len-0.002])
  Rod();

module Tooth() {
  teeth_outer_width = teeth_outer * tan(360/teeth_count_sizing);
  translate([teeth_innercurvdiam/2, 0, 0])
  hull() {
    translate([0, -teeth_innercurvdiam/2, 0])
      cylinder(d=teeth_innercurvdiam, h=gear_depth);
    translate([teeth_outer - teeth_inner,
               0,
               0])
      scale([1, 2*teeth_outer_width / teeth_innercurvdiam, 1])
        intersection() {
          cylinder(d=teeth_innercurvdiam, h=gear_depth);
          translate([-teeth_innercurvdiam/2-0.001,
                     -teeth_innercurvdiam/2-0.001,
                     -0.001])
            cube([teeth_innercurvdiam+0.002,
                  teeth_innercurvdiam/2+0.001,
                  gear_depth+0.002]);
        }
  }
}

```


[User]
I'd like to create a parametric 18650 battery holder using OpenSCAD. I need it to be customizable in terms of the number of batteries it can hold, as well as how snugly the batteries fit. I've seen some designs that work well as both shelf holders and battery caps, so a flexible design would be great.

Here's what I'm imagining:

*   **Basic Structure:** The holder should be a rectangular grid of cylindrical recesses, each designed to hold a single 18650 battery.
*   **Parameters:** I need to be able to control the following parameters:
    *   `battery_diameter`: The diameter of the battery (typically 18.5mm).
    *   `clearance`: The extra space around the battery in the recess to control snugness.
    *   `rim_thickness`: The thickness of the material surrounding each battery recess.
    *   `base_thickness`: The thickness of the base of the holder.
    *    `battery_depth`: The depth of the recess.
    *   `num_x`: The number of batteries in the x-direction.
    *   `num_y`: The number of batteries in the y-direction.
    *   `chamfer_size`: The size of a chamfer that starts at the top of the battery depth and widens at the top.
*   **Chamfer:**  I'd like a small chamfer at the top of each cylindrical recess.  This should start at the depth of the battery and widen out at the top of the hole.
*   **Output:** I would like for you to generate the scad file(s) to produce an STL that I can print.
* **Libraries:** I'm not looking to use any specific libraries at the moment, I'd prefer a design that doesn't require external dependencies beyond what comes standard in OpenSCAD.

Could you please create this OpenSCAD design? It should be fully parametric and generate the geometry as described.  I'm planning to print this on my 3D printer and will likely experiment with different parameter values.

[Assistant]
18650_holder.scad:
```
// Created in 2018 by Ryan A. Colyer.
// This work is released with CC0 into the public domain.
// https://creativecommons.org/publicdomain/zero/1.0/
//
// https://www.thingiverse.com/thing:3024647

battery_diam = 18.5;
clearance = 0.4;
rimthick = 2;
basethick = 2;

numx = 2;
numy = 8;

battery_depth = 13;

$fa = 1;
$fs = 0.4;

hole_diam = battery_diam + clearance;

height = battery_depth + basethick;

pitch = hole_diam + rimthick;

squarex = numx*pitch - rimthick - hole_diam + 0.001;
squarey = numy*pitch - rimthick - hole_diam + 0.001;

chamferby = rimthick * 2/5;

echo(squarex, squarey);

difference() {
  linear_extrude(height=height)
    offset(r=rimthick+hole_diam/2)
    square(size = [squarex, squarey]);

  for(y=[0:numy-1])
    for(x=[0:numx-1])
      translate([x*pitch, y*pitch, rimthick])
        union() {
          cylinder(d=hole_diam, h=battery_depth+0.1);
          translate([0, 0, battery_depth+0.1-chamferby])
            cylinder(d1=hole_diam, d2=hole_diam+2*chamferby, h=chamferby);
        }
}

```


[User]
I'd like to create a parametric battery cap design in OpenSCAD, similar to the one I have, but with a few improvements and a focus on making it more flexible.

Right now, my design uses hardcoded dimensions for a few battery sizes (AAA, AA, C, D, and 18650), but I'd like to be able to input a diameter and depth for a battery, and then generate the cap. Here's a breakdown of the features:

*   **Basic Structure:** The design is basically a flat disk with a hole extruded up to a specified height. The hole is slightly larger than the battery diameter to provide a fit. The disk should have rounded corners, not just a simple rectangle with a hole.
*   **Battery Parameters:** I need to be able to specify:
    *   `battery_diameter`: The diameter of the battery.
    *   `battery_depth`: The depth of the battery.
    *   `clearance`: The amount of space around the battery for fitting. Should be a small value, and potentially have a way to override it to 0.
*   **Cap Parameters:** I need to be able to specify:
    *   `rim_thickness`: The thickness of the wall surrounding the hole
    *   `base_thickness`: The thickness of the base of the cap.
    *   `chamfer`: A chamfer on the top edge of the hole.
*   **Extrusion:** The base should be extruded up and then the battery hole subtracted.
*   **Rounded Corners:** Instead of a rectangle for the base shape, I'd prefer rounded corners.
*   **Multiple Caps:** I'd like to be able to specify the number of caps in x and y dimensions and then arrange them in an array.
*   **Material:**  I'm planning on printing in PLA, but also want to experiment with flexible filaments later. I want the fit to be snug by default to make it easy to sand/file the hole for an exact fit.
*   **Libraries:** I’d prefer if you used BOSL2, but if you have an alternative, I'm open to suggestions.

It's very important that all parameters are adjustable in the code, to customize the design. Can you generate the OpenSCAD code for this?

[Assistant]
AAA_battery_cap.scad:
```
// Created in 2018 by Ryan A. Colyer.
// This work is released with CC0 into the public domain.
// https://creativecommons.org/publicdomain/zero/1.0/
//
// https://www.thingiverse.com/thing:3024664

battery_diam = 10.3; // AAA
//battery_diam = 14.3; // AA
//battery_diam = 25.2; // C
//battery_diam = 33.2; // D
//battery_diam = 18.5; // 18650
clearance = 0.2;
rimthick = 1;
basethick = 1;

numx = 1;
numy = 1;

battery_depth = 13;

$fa = 1;
$fs = 0.4;

hole_diam = battery_diam + clearance;

height = battery_depth + basethick;

pitch = hole_diam + rimthick;

squarex = numx*pitch - rimthick - hole_diam + 0.001;
squarey = numy*pitch - rimthick - hole_diam + 0.001;

chamferby = rimthick * 2/3;

echo(squarex, squarey);

difference() {
  linear_extrude(height=height)
    offset(r=rimthick+hole_diam/2)
    square(size = [squarex, squarey]);

  for(y=[0:numy-1])
    for(x=[0:numx-1])
      translate([x*pitch, y*pitch, rimthick])
        union() {
          cylinder(d=hole_diam, h=battery_depth+0.1);
          translate([0, 0, battery_depth+0.1-chamferby])
            cylinder(d1=hole_diam, d2=hole_diam+2*chamferby, h=chamferby);
        }
}

```


[User]
Hi, I'm looking to create a parametric push-fit tool holder for 3D printing. I've seen some designs, but I'd like to have a more customizable version.

Essentially, it should be a circular holder with a central hole designed to grip a cylindrical tool. The gripping mechanism should be a kind of circlip or washer with inward-facing angled teeth.  I want to be able to adjust the main diameter, the width of the grip, the angle of the teeth, the holder thickness, the size of the mounting plate, and the size of the mounting holes. Here's a breakdown:

*   **Inner Diameter (`Inner_dia`):** This is the diameter of the hole that the tool will fit into. It should be adjustable, allowing for different tool sizes.
*   **Grip Width (`width`):** The width of the 'washer' part of the holder. I'd like to be able to make this thicker for a stronger grip.
*   **Grip Angle (`grip_angle`):** The angle of the inward-facing angled teeth in the circular grip.  I would need this to be adjustable to increase/decrease grip force.
*   **Holder Thickness (`Holder_thickness`):** The overall thickness of the holder.
*   **Fix Plate Width (`Fix_plate_width`):**  The width of the mounting plate part of the design (the "batten" in the existing design).
*   **Fixing Hole Diameter (`hole_dia`):**  The diameter of the mounting holes on the plate.

I'm imagining the overall shape would be a circular washer with the internal diameter matching the tool's diameter, and teeth angled inwards. I also need the mounting plate integrated into the design, allowing it to be screwed to a surface.

The current design uses a few `hull` and `rotate` operations to create the circlip/teeth, as well as a `round2d` function using multiple offset operations. It might be useful if your generator could implement similar functionality, but perhaps without using direct offsets. I would expect this design to use OpenSCAD primitives, but I don't require it to match the existing design identically. I would like the mounting holes to be chamfered using a `cylinder` with a truncated cone shape if possible.

Also, I do not have any preference for specific libraries; any existing design files should be included directly in the .zip. Thanks!

[Assistant]
push_fit_tool_holder.scad:
```
////////////////////////////////////////////////
////////////////////////////////////////////////
////////////////////////////////////////////////
/// OpenSCAD File version 2015.03-2       //////
///           30 - 07 - 2018              //////
///         by Ken_Applications           //////
///                V3.0                   //////
////////////////////////////////////////////////

//...The diameter you want to grip  [Default 10]
Inner_dia=9;// [5:0.5:26]

//...The larger the width the stronger the tool holder [Default 8]
//...Must be bigger than 5
width=7; // [5,6,7,8,9,10,11,12,13,14,15,16]

//...The smaller the grip_angle the stronger the push fit [Default 45]
grip_angle=45;// [30:1:60]

//...Holder thickness
Holder_thickness=4;

//...Holder / battern size
Fix_plate_width=12;

//...Fixing Hole diameter
hole_dia=4;

module holder_with_holes(){
 difference(){
 holder();

translate([(Inner_dia/2*.8)+width/2,(Inner_dia/2)+width/2+Fix_plate_width/2+(width*0.3),0]) circle(hole_dia/2);
translate([-Inner_dia/2*.8-(width/2),(Inner_dia/2)+width/2+Fix_plate_width/2+(width*0.3),0]) circle(hole_dia/2);

}
}

module holder(){
round2d(OR=0,IR=width/4.5){
translate([0,Fix_plate_width/2+outter_dia/2+(width*0.3),0]) square([outter_dia*1.5,Fix_plate_width],true);
e_circlip();
}
}

outter_dia=Inner_dia+width;
//#circle(Inner_dia/2-.05);
mid_point=((outter_dia-Inner_dia)/2);
rrad=(mid_point/2)-0.001;
$fn=200;

module the_washer(){
difference(){
circle(outter_dia/2);//radius
circle(Inner_dia/2);
}
}

module tri_1 (){
hull(){
circle(0.05);
rotate([0,0,-grip_angle]) translate([0,-outter_dia*20,0]) circle(.3);
rotate([0,0,grip_angle]) translate([0,-outter_dia*20,0]) circle(.3);
}
}

module tri_2 (){
hull(){
circle(Inner_dia/10);
rotate([0,0,-30]) translate([0,Inner_dia/2+mid_point/2,0]) circle(.2);
rotate([0,0,-45]) translate([0,Inner_dia/2+mid_point/2,0]) circle(.2);
rotate([0,0,-60]) translate([0,Inner_dia/2+mid_point/2,0]) circle(.2);
}
}

module tri_3 (){
hull(){
circle(Inner_dia/10);
rotate([0,0,30]) translate([0,Inner_dia/2+mid_point/2,0]) circle(.2);
rotate([0,0,45]) translate([0,Inner_dia/2+mid_point/2,0]) circle(.2);
rotate([0,0,60]) translate([0,Inner_dia/2+mid_point/2,0]) circle(.2);
}
}
module circlip(){
round2d(OR=rrad,IR=0){
difference(){
the_washer();
tri_1 ();
//tri_2 ();
//tri_3 ();
}
}
}

module e_circlip(){
round2d(OR=0.5,IR=Inner_dia/10){
difference(){
circlip();
    tri_2 ();
    tri_3 ();
}
}
}

module round2d(OR,IR){
    offset(OR)offset(-IR-OR)offset(IR)children();
}

module extr_holder (){
linear_extrude(height=Holder_thickness){
holder_with_holes();
}
}

difference(){

 extr_holder ();
//////chamfer holes
translate([(Inner_dia/2*.8)+width/2,(Inner_dia/2)+width/2+Fix_plate_width/2+(width*0.3),Holder_thickness-hole_dia/2/2.38]) cylinder(  hole_dia/2/2.38,    hole_dia/2,    hole_dia, false);
translate([-(Inner_dia/2*.8)-width/2,(Inner_dia/2)+width/2+Fix_plate_width/2+(width*0.3),Holder_thickness-hole_dia/2/2.38]) cylinder(  hole_dia/2/2.38,    hole_dia/2,    hole_dia, false);
//////
 }

```


[User]
Hey, I'm trying to make a customizable sign that can attach to a model I have, specifically Filopat's "Grumpy cat with a grumpy sign." I need it to be parametric so I can change the dimensions and text easily. I'd like to be able to change:

*   The length of the sign's pole.
*   The width and height of the sign itself.
*   The height of the text, which should be a percentage of the sign's height.
*   The number of lines of text (up to 3).
*   The actual text for each line.

The sign should have a rectangular base with the pole coming out the bottom, like a lollipop. I'd also like the text to be centered both horizontally and vertically within the sign, and each line to be evenly spaced if I choose multiple lines. The text should be extruded a bit to make it stand out.

Could you generate the necessary OpenSCAD code for me?

[Assistant]
GrumpyCatSign.scad:
```
//
// Customizable Sign for "Grumpy cat with a grumpy sign" by Filopat
//
// This part was designed 29 July 2018 by Joe McKeown.
// It's available under the terms of the Creative Commons CC-BY-NC license
// (https://creativecommons.org/licenses/by-nc/3.0/).
//
// "Grumpy cat with a grumpy sign" by Filopat - https://www.thingiverse.com/Filopat/about
// Avaivailible on Thingiverse - https://www.thingiverse.com/thing:125485
// Licensed by CC-BY-NC
//
// History:
// V1.0 29 July 2018 First version

//Length of the sign's pole (default 80)
Pole_Length=80;
// Width of the sign
Width=55;
// Height of the sign
Height=35;
// Height of text. (100% fills the sign, go smaller)
Text_Height_Percent=85; // [1:100]

Number_of_lines=2; // [1,2,3]
Line_1="Bite";
Line_2="me";
Line_3="";

/* [Hidden] */
TxtPct=Text_Height_Percent/100;
TextHeight=TxtPct*Height;
LineHeight=TextHeight/Number_of_lines;
TextBase=(Height-TextHeight)/2;
FontSize=LineHeight - (0.1*Height);
Lines=[ Line_1, Line_2, Line_3 ];

translate([0, Height/2, 1.25])
  cube([Width,Height,2.5],true);
translate([0,0,1.1])rotate([90,0,0])
  cylinder(d=2.2, h=Pole_Length, $fn=10);

for ( i=[0:Number_of_lines-1]){
  translate([0, TextBase + LineHeight/2 + (i * LineHeight), 2.5])
  color("red") linear_extrude(1.5)
    text(Lines[Number_of_lines-1-i], size=FontSize, valign="center", halign="center");
}
```


[User]
Hey, I'm looking for an OpenSCAD design for a Z-motor spacer for an Ender 2 or Ender 3 3D printer. Basically, the motor sits a bit too low, causing the leadscrew to be angled and bind, especially near the bed. I've seen designs for 1mm thick spacers, but I'd like a parametric design where I can change both the thickness and the bolt hole diameters.

The overall dimensions of the spacer need to be 40mm wide by 16mm deep, and it needs two bolt holes. I want those bolt holes to be centered on the width at 1/4 and 3/4 of the length, and centered on the depth.  So, if you consider the design a rectangle oriented with the 40mm side along the x axis and the 16mm side along the y axis, and the origin at the lower left, the holes should be at x=10,y=8 and x=30,y=8.  I want the thickness to be a customizable variable, as well as the diameter of the bolt holes. Ideally, I could control these from the customizer.  I think we can keep the number of sides for circles the default.

I'm not sure if this is the right approach, but could the design use difference() to cut out the bolt holes, and linear_extrude() to create the spacer's thickness?  I think it should work, but if you have a more efficient method, I'm open to suggestions.

Could you create a SCAD file for this?

[Assistant]
ender_2_z_spacer_scad.scad:
```
bolt_hole_diameter = 4.6; // [4.0:0.1:5]
z_spacer_thickness = 1.0; // [1:0.1:10]

/* [Hidden] */

$fn = 100;

x1 = 40;
y1 = 16;

d2 = bolt_hole_diameter;

h1 = z_spacer_thickness;

difference() {
	linear_extrude(height=h1) square([x1,y1]);

	translate([x1/4,y1/2,-0.1]) cylinder(h=h1+1,d=d2);
	translate([x1/4*3,y1/2,-0.1]) cylinder(h=h1+1,d=d2);

}

```


[User]
Hey, I'm looking to create a customizable bottle holder using OpenSCAD, kind of like the "May Les Forts" design I found on Thingiverse. It's a bit complex, so I'd love some help with a parametric model.

Basically, it's a structure made of two side parts, a crossbar, a hook for the bottle neck, and a rest for the neck. I need to be able to control the following:

*   **Part Selection:** I want to be able to choose which part to render: the assembled model, either of the side parts (left and right), the crossbar, the hook part, or the neck rest.
*   **Side Part Splitting:** For larger prints, I'd need an option to split the side parts horizontally into two pieces. So, an option to choose the whole part or either the top half or the bottom half.
*   **Bottle Display:** A toggle to show the whole holder with a bottle or just the holder itself.
*   **Neck Dimensions:** I need to be able to specify the length and diameter of the bottle's neck as well as the distance from the start of the neck to its center of gravity.
*   **Crossbar Dimensions:** I need parameters for the width and depth of the crossbars.
*   **Rounding:** How round the corners are, so a radius parameter.
*   **Bolt Size:** The flat-to-flat distance of the hex bolts is another parameter.
*   **Clearance and Fit:** I want to be able to control the clearance between parts and the tightness of the fit with simple multiplication factors on a basic clearance/tightFit value.

The design is a bit like a skeletal frame that hugs a bottle.  The side parts are a series of connected bars that run diagonally. The crossbars connect the side parts.  The neck rest at the top of the main structure is a slightly flattened cylinder that holds the neck and there is a hook on the other side of the structure to hold the neck also. The original design uses a lot of trigonometry but it looks like it calculates the placement of the bars by finding the center of gravity.  The side supports are mirrored and the cross-supports run between the two.

Ideally, I’d like the model to be generated using only standard OpenSCAD functions - I don't want to rely on any external libraries for this if possible. I think the parameters should be easy to adjust so people can customize for their bottles.

Could you help me generate the necessary parametric OpenSCAD file(s)? Thanks!

[Assistant]
may-les-forts.scad:
```
// "May Les Forts be with you" provided by Stellar Innovation
// http://www.thingiverse.com/stellarinnovation/about
// under Creative Commons License, Attribution (BY)

// select part to print
partToPrint = 0; // [0:show assembled, 1:first side part, 2: second side part, 3: crossbar, 4: hook part, 5: rest part]

// split big parts in half?
printSplitPart = 0; // [0: dont split, 1: first half, 2: second half]

// show with bottle
withBottle = "yes"; // [yes, no]

// length of neck (affects width of side parts)
neckLength = 55;  // [25:75]

// diameter of neck (size of holes)
neckDiameter = 30; // [25:50]

// distance from start of neck to center of gravity
centerOfGravity = 117; // [50:150]

// width and depth of the connecting bars
barDimension = 10;  // [5:15]

// how round to make the corners
cornerRadius = 3; // [0:0.5:5]

// size of the hex bolts
boltFlat2Flat = 5; // [2.5:0.5:8]

clearance = 1*0.3;
tightFit = 1*0.2;

neckHoleDiameter = neckDiameter + 2*clearance;
neckRestDiameter = neckHoleDiameter + 2*barDimension;
neckRestScaleY = (neckHoleDiameter*sqrt(2) + 2*barDimension)/neckRestDiameter;

// distance from center of neck to neck-rest connectors
neckRestConnectorDistance = neckRestScaleY*sqrt(barDimension*(barDimension+neckHoleDiameter));

// width of a horizontal cross section
sectionWidth = neckLength + sqrt(0.5)*(neckRestConnectorDistance - barDimension) - 0.5*neckHoleDiameter;

// length the longer side: ground to pivot point such that center of gravity is center of base
longSide = sectionWidth + sqrt(2)*centerOfGravity;

// Round to number of stories
barPitch = sqrt(0.5)*sectionWidth;
numStories = max(1, round((longSide - neckRestConnectorDistance + barDimension)/barPitch));

if (partToPrint==1 || partToPrint==2) {
  rotate(45)
    if (printSplitPart==0)
      SidePart(numStories=numStories, withFundament=true, topPart=true, withHookConnector=(partToPrint==1));
    else if (printSplitPart==1)
      rotate([180,0,90])
        SidePart(numStories=ceil(numStories/2), withFundament=true, topPart=false, withHookConnector=false);
    else
      SidePart(numStories=floor(numStories/2), withFundament=false, topPart=true, withHookConnector=(partToPrint==1));
}
else if (partToPrint==3) {
  CrossbarPart();
}
else if (partToPrint==4) {
    NeckHookPart();
}
else if (partToPrint==5) {
  NeckRestPart();
}
else {
  // Show whole structure assembled
  depth=neckRestDiameter;
  width = sqrt(2)*sectionWidth;
  height = numStories*barPitch;

  if (withBottle=="yes") {
    dxz = sqrt(0.5)*((numStories+1)*barPitch - barDimension + neckRestConnectorDistance);
    translate([sectionWidth+0.5*neckDiameter-dxz, 0, dxz])
      Bottle();
  }

  translate([0, 0.5*depth])
    rotate([90, 0])
      rotate(45) {
        // First side part
        SidePart(numStories=numStories, withFundament=true, topPart=true, withHookConnector=true);

        // Rest part
        x0 = sqrt(0.5)*sectionWidth;
        y0 = numStories*barPitch + tightFit + neckRestConnectorDistance;
        z0 = 0.5*depth;
        translate([x0, y0, z0])
          rotate([0, 90])
            NeckRestPart();
      }

  // Second side part
  translate([0, -0.5*depth + barDimension])
    rotate([90, 0])
      rotate(45)
       SidePart(numStories=numStories, withFundament=true, topPart=true, withHookConnector=false);

  // Crossbars
  dz = sqrt(0.5)*barPitch;
  for (s = [1:numStories], k=[-1,+1])
    if (s!=1 || k!=-1) {
        x0 = (k==1)? sectionWidth : -0.5*sectionWidth + sqrt(0.5)*barDimension;
        z0 = (k==1)? -sqrt(0.5)*barDimension :  -0.5*sectionWidth;
        a = (k==+1)? 45 : -135;

        x = x0 - s*dz;
        z = z0 + s*dz;

      translate([x0 - s*dz, 0, z0 + s*dz])
        rotate([0, a])
          translate([0,0,-0.5*boltFlat2Flat+tightFit])
            CrossbarPart();
    }

  // The hook
  x0 = -sectionWidth+barDimension-(numStories-1)*dz;
  z0 = (numStories+1)*dz + sqrt(0.5)*(neckRestConnectorDistance - barDimension);
  translate([x0, 0, z0])
  rotate([90, 0, -90])
    NeckHookPart();
}

module Bottle() {
  diameter = 2.5*neckDiameter;
  shoulder = centerOfGravity/3;
  body = 1.6*centerOfGravity;

  rotate([0, -90]) {
    cylinder(d=neckDiameter, h=neckLength);
    translate([0,0,-shoulder])
      cylinder(d1=diameter, d2=neckDiameter, h=shoulder);
    translate([0,0,-shoulder-body])
      cylinder(d=diameter, body);
  }
}

module CrossbarPart() {
  flat2flat = boltFlat2Flat-tightFit;
  boltDiameter = flat2flat*2/sqrt(3);
  boltLength =  neckRestDiameter + 2;
  barLength = neckRestDiameter - 2*(barDimension + tightFit);
  barThickness = 0.5*flat2flat + 0.5*barDimension;

  translate([0,0,0.5*flat2flat])
    rotate([90, 0])
      cylinder(d=boltDiameter, h=boltLength, center=true, $fn=6);

  translate([-0.5*barDimension, -0.5*barLength]) {
    difference() {
      cube([barDimension, barLength, barThickness]);

      // Fillets
      for (x=[0, barDimension-cornerRadius])
        translate([x, 0, barThickness-cornerRadius])
          cube([cornerRadius, barLength, cornerRadius]);
    }

    intersection() {
      cube([barDimension, barLength, barThickness]);

      for (x=[cornerRadius, barDimension-cornerRadius])
        translate([x, 0, barThickness-cornerRadius])
          rotate([-90, 0])
            cylinder(r=cornerRadius, h=barLength, $fn=24);
    }
  }
}

module SidePart(numStories, withFundament=false, topPart=false, withHookConnector=false) {
  width = sqrt(2)*sectionWidth;
  height = numStories*barPitch;
  x0 = 0.5*width;
  x1 = x0 - 0.5*barDimension;
  x2 = x0 - barDimension;
  t = tightFit;

  difference() {
    union() {
      extraStory = (withFundament)? 1 : 0;
      translate([0, -extraStory*barPitch])
        BasicSide(numStories + extraStory, withHookConnector && topPart);

        // extra pillar at fundament
        if (withFundament) {
          h = barPitch - barDimension;
          translate([+0.5*barDimension, 0.5*h])
            rotate(90)
              Crossbar(h);
        }
    }

    // connectors at top of part
    for (x=[-x0, x2-t])
      if (!topPart || x!=-x0) {
        z = (topPart)? 0.5*barDimension - t : -0.5*barDimension + t;
        translate([x, height - barDimension - t, z])
          cube([barDimension+t, barDimension+t, barDimension]);
      }

    // connectors of bottom of split part
    if (!withFundament)
      translate([-0.5*width, -barDimension, 0.5*barDimension - t])
        cube([width, barDimension+t, barDimension]);

    // Hex connectors
    boltDiameter = (boltFlat2Flat+tightFit)*2/sqrt(3);
    for (s=[0:numStories]) {
      for (x=[-x1, +x1])
        if ((s!=0 || !withFundament || x!=-x1)
           && (!withFundament || s>1 || x!=-x1)
           && (s!=numStories || !topPart || x==-x1))
          translate([x, s*barPitch-0.5*barDimension])
            rotate(30)
              cylinder(d=boltDiameter, h=barDimension, $fn=6);
    }

    // Fundament at 45 degrees
    if (withFundament) {
      eps = 0.01;
      w = 2*sectionWidth + 1.5*barDimension;
      h = 1.5*barPitch + 1.5*barDimension;
      rotate(-45)
        translate([-0.5*w, -h])
          cube([w, h+eps, barDimension]);
    }

    // leftmost top corner when there is no hook connector
    if (topPart && !withHookConnector) {
      translate([-x0, height]) {
        // remove cross-bar fillet
        cube([barDimension+cornerRadius, cornerRadius, barDimension]);

        // Round corner
        difference() {
          translate([0, -cornerRadius])
            cube([cornerRadius, cornerRadius, barDimension]);
          translate([cornerRadius, -cornerRadius])
            cylinder(r=cornerRadius, h=barDimension, $fn=24);
        }
      }
    }
  }
}

module BasicSide(numStories, withHookConnector) {
  width = sqrt(2)*sectionWidth;
  height = numStories*barPitch;
  x0 = 0.5*width;
  x1 = x0 - 0.5*barDimension;
  x2 = x0 - barDimension;
  t = tightFit;

  difference() {
    union() {
      // Pillars
      extraHeight = barDimension - t;
      for (x=[-x0, x0-barDimension])
        translate([x, -extraHeight])
          cube([barDimension, numStories*barPitch + extraHeight, barDimension]);

      for (s=[1:numStories])
        translate([0, s*barPitch - barDimension])
          Crossbar(width=2*x2);
    }

    // Make space for fillet
    if (withHookConnector)
      translate([-x0, height-cornerRadius])
        cube([cornerRadius, cornerRadius, barDimension]);

    // cut off a tiny bit of the pointy corner
    for (x=[-x0, x2-t])
      translate([x-cornerRadius, height + 0.6*cornerRadius])
        cube([barDimension+2*cornerRadius, cornerRadius, barDimension]);
  }

  if (withHookConnector) {
    // Attachment with fillets
    translate([-x0, height])
      HookConnector();
  }
}

module HookConnector() {
  y1 = cornerRadius*sin(22.5);
  x2a = sqrt(2)*barDimension;
  x2b = cornerRadius/tan(22.5);
  x2 = x2a + x2b;
  y2 = -barDimension;
  y3 = sqrt(0.5)*x2b;
  x3 = x2a + y3;
  c = 0.5*barDimension;
  t = 0.5*tightFit;
  length = sectionWidth - sqrt(0.5)*barDimension - t;

  difference() {
    union() {
      // the arm
      rotate(-45)
        translate([0, y1])
          difference() {
            cube([barDimension, length-y1, barDimension]);

            y4 = length-y1-3*c;
            translate([c-t, y4])
              cube([c+t,3*c+t, barDimension]);
            translate([0, y4+c, c-t])
              cube([barDimension,c+2*t, barDimension]);
          }
      // Special polygon for fillets
      linear_extrude(height=barDimension)
        polygon([[0,-y1], [0,y2], [x2,y2], [x2,cornerRadius], [x3,y3], [cornerRadius, -y1]]);
    }

    // inner corner
    translate([x2, cornerRadius])
      cylinder(r=cornerRadius, h=barDimension, $fn=24);
  }

  // outer corner
  translate([cornerRadius, -y1])
    cylinder(r=cornerRadius, h=barDimension, $fn=24);
}

module Crossbar(width) {
  x1 = 0.5*width;
  eps = 0.01;
  translate([-x1-eps, 0])
    cube([width+2*eps, barDimension, barDimension]);
  translate([-x1, barDimension])    Fillet();
  translate([-x1, 0]) mirror([0,1,0]) Fillet();
  translate([x1, 0]) rotate(180)     Fillet();
  translate([x1, barDimension]) mirror([1,0,0]) Fillet();
}

module Fillet() {
  eps = 0.01;

  difference() {
    translate([-eps, -eps])
      cube([cornerRadius+eps, cornerRadius+eps, barDimension]);
    translate([cornerRadius, cornerRadius])
      cylinder(r=cornerRadius, h=barDimension, $fn=24);
  }
}

module NeckHookPart() {
  d1 = neckHoleDiameter;
  d2 = neckRestDiameter;
  r2 = 0.5*d2;

  // Hook
  difference() {
    cylinder(d=d2, h=barDimension, $fn=60);

    cylinder(d=d1, h=barDimension, $fn=60);
    translate([-r2, -r2])
      cube([d2, r2, barDimension]);
  }

  // rounded end
  x1 = r2 - 0.5*barDimension;
  translate([x1, 0])
    cylinder(d=barDimension, h=barDimension, $fn=24);

  // shaft with connector
  c = 0.5*barDimension;
  t = 0.5*tightFit;
  y2 = neckRestConnectorDistance*sqrt(0.5) + 3*c - t;
  translate([-r2, -y2])
    difference() {
      cube([barDimension, y2, barDimension]);

      translate([0, 0, c-t]) {
        cube([c+t, 3*c+t, barDimension]);
        cube([barDimension, c+t, barDimension]);
      }
      translate([0, 2*c-t, c-t])
        cube([barDimension, c+t, barDimension]);
    }
}

// Top of part at z=0, Center of neck is at origin with direction (0,+1,-1)
module NeckRestPart() {
  difference() {
    BasicNeckRest();

    // 45-degere hole at the center
    rotate([45, 0])
      cylinder(d = neckHoleDiameter, h=6*barDimension, center=true, $fn=60);

  }
}

// Neck rest w/o the hole
module BasicNeckRest() {
  d1 = neckHoleDiameter;
  d2 = neckRestDiameter;
  scale_y = neckRestScaleY;

  difference() {
    translate([0, 0, -barDimension])
      union() {
        // Main cylinder
        scale([1, scale_y])
          cylinder(d = d2, h=barDimension, $fn=60);

        // Straight sides
        t = 0.5*tightFit;
        x0 = 0.5*d2;
        y0 = -neckRestConnectorDistance+t;
        translate([-x0, y0])
          cube([d2, neckRestConnectorDistance + 1.5*barDimension, barDimension]);

        w = 0.5*barDimension - t;
        for (x=[-x0, x0-barDimension])
          translate([x, y0-barDimension])
            cube([w, barDimension, barDimension]);
      }

    // Remove roughly half of cylinder
    rotate([45, 0])
      translate([-0.5*d2, 0, -d2-barDimension])
        cube([d2, d2, d2+barDimension]);
  }

  // rounded ends
  d3 = 0.5*(d2 - d1);
  x3 = 0.25*(d1+d2);
  y3 = 0.5*barDimension;
  intersection() {
    for (x=[-x3, +x3])
      translate([x, 0])
        rotate([45, 0])
          cylinder(d=d3, h=3*barDimension + d3, center=true, $fn=24);

    translate([-0.5*d2, 0, -barDimension])
      cube([d2, d2, barDimension]);
  }
}

```


[User]
Okay, I need a customizable mounting block for my reloading presses. It should have a base plate, and I want to be able to choose between a simple rectangular block or a bent plate design. The bent plate design will be experimental and may be hard to print, so I'm expecting some potential issues there.

I need to be able to select the type of press I'm using so that the bolt holes can be placed correctly. I've got a bunch of different Lee presses as well as some RCBS presses and brass prep stations. The specific press types I need to support are:

*   Alignment Tabs Only (just for a plain block with alignment nubs, no press holes)
*   Lee Classic Turret Press
*   Lee Load-Master
*   Lee Breech Lock Reloader Press
*   Lee Breech Lock Challenger Press
*   Lee Breech Lock Classic Cast
*  Lee Classic Cast
*   Lee Pro 1000
*   Lee 4 Hole Value Turret
*   Lee 2018+ Pro 1000
*   Lee 2018+ 4 Hole Value Turret
*   RCBS Rock Chucker
*   RCBS Partner
*   Brass Prep Station Mk I
*   Brass Prep Station Mk II
*   Brass Prep Station Mk III

I also need to be able to specify:

*   The diameter of the bolt holes
*   The diameter of the bolt head counterbore
*   The thickness of the bolt head counterbore
*   The thickness of the base plate
*   The radius of the corners of the base plate
*   The width of the bottom of the base plate
*   The width of the top of the base plate
*   The length of the base plate

I'd like it if the code used a module for the corners and another module for any support braces that might be needed for the bent plate version. Please make sure that any text labels for each press are also parametric and controlled by the device selection. I will need the text to be linear extruded from the face of the block. Make sure to use a reasonable number of facets for the smoothing, and provide comments in the code. The text should label which press type is being used for each configuration.

[Assistant]
bench_plate.scad:
```
// This is a Bench Plate Mounting Block. The Bent Plate design
// is purely experimental. It will be difficult for most printers to
// render due to the extreme overhang.
//
// Warning -- some sanding and fitting may be required.
//
// This is licensed under the creative commons+attribution license
//
// This design was inspired by dhench's Lee Bench Plates design at
// https://www.thingiverse.com/thing:2933054
//
// To fulfill the attribution requirement, please link to:
// http://www.thingiverse.com/thing:3028704

/* [Main] */

// Number of facets (larger numbers provide better smoothing)
$fn=10;

// Define shape of object
shape=0;//[0:Block,1:Bent Plate]

// Define press type
device=0;//[0:Alignment Tabs Only,1:Classic Turret Press,2:Load-Master,3:Breech Lock Reloader Press,4:Breech Lock Challenger,5:Breech Lock Classic Cast,6:Classic Cast,7:Pro 1000,8:4 Hole Value Turret,9:2018+ Pro 1000,10:2018+ 4 Hole Value Turret,11:RCBS Rock Chucker,12:RCBS Partner,13:Brass Prep Station Mk I,14:Brass Prep Station Mk II,15:Brass Prep Station Mk III]

// Bolt hole diameter in mm
bolt_diameter=6.35;

// Bolt head diameter in mm
head_diameter=4*bolt_diameter;

// Bolt head thickness in mm
head_thickness=3.0;

// Base plate thickness in mm
thickness=18.0;

// Corner radius in mm
radius=3.0;

// Bottom base plate width in mm
bottom_width=196.85;

// Top base plate width in mm
top_width=90.0;

// Base plate length (top to bottom) in mm
length=96.425;

//rotation_angle=atan((bottom_width-top_width)/2*length)-30;

module lable(text_input)
{
    #translate([bottom_width/2-2*radius,0,0]) rotate([90,180,0]) linear_extrude(radius)
    {
        text(text_input,size=5,center=false);
    }
}

module corner(corner_height,corner_radius)
{
    hull()
    {
        translate([0,0,-(corner_height-4*corner_radius)]) sphere(r=corner_radius,center=true);
        translate([0,0,corner_radius]) sphere(r=corner_radius,center=true);
    }
}

module brace(brace_side,brace_radius)
{
    hull()
    {
        translate([0,-brace_side/2,0]) sphere(r=brace_radius,center=true);
        translate([0,brace_side/2],0)  sphere(r=brace_radius,center=true);
        translate([0,-brace_side/2,brace_side/2]) sphere(r=brace_radius,center=true);
        translate([0,brace_side/2,brace_side/2])  sphere(r=brace_radius,center=true);
        translate([brace_side/2,-brace_side/2,0]) sphere(r=brace_radius,center=true);
        translate([brace_side/2,brace_side/2],0)  sphere(r=brace_radius,center=true);

    }
}

module base()
{
    if(shape==0)
    {
        hull()
        {
            translate([-(bottom_width/2-radius),0,0])   corner(thickness,radius);
            translate([(bottom_width/2-radius),0,0])  corner(thickness,radius);
            translate([-(top_width/2-radius),(length-radius),0])  corner(thickness,radius);
            translate([(top_width/2-radius),(length-radius),0]) corner(thickness,radius);
        }
        // Add alignment tabs
        translate([-19,82,thickness/2-(bolt_diameter/2+1)])  sphere(r=bolt_diameter/2,center=true);
        translate([11.5,82,thickness/2-(bolt_diameter/2+1)]) sphere(r=bolt_diameter/2,center=true);
    }
    if(shape==1)
    {
        union()
        {
            hull()
            {
                translate([-(bottom_width/2-radius),0,0])   corner(thickness,radius);
                translate([-(top_width/2-radius),(length-radius),0])  corner(thickness,radius);
            }
            hull()
            {
                translate([(bottom_width/2-radius),0,0])  corner(thickness,radius);
                translate([(top_width/2-radius),(length-radius),0]) corner(thickness,radius);
            }
            hull()
            {
                translate([-(bottom_width/2-radius),0,-head_thickness/2]) corner(radius,radius/2);
                translate([(bottom_width/2-radius),0,-head_thickness/2])  corner(radius,radius/2);
                translate([-(top_width/2-radius),(length-radius),-head_thickness/2]) corner(radius,radius/2);
                translate([(top_width/2-radius),(length-radius-radius),-head_thickness/2])  corner(radius,radius/2);
            }
            // Render braces
            translate([(bottom_width-top_width)/sqrt(3)-6,2*length/3,-radius/2]) rotate([0,90,211]) brace(5,radius);
            translate([-((bottom_width-top_width)/sqrt(3)-6),2*length/3,-radius/2]) rotate([0,90,-29]) brace(5,radius);
            translate([(4*(bottom_width-top_width)/sqrt(3)/3-8),length/3,-radius/2]) rotate([0,90,211]) brace(5,radius);
            translate([-(4*(bottom_width-top_width)/sqrt(3)/3-8),length/3,-radius/2]) rotate([0,90,-29]) brace(5,radius);
        }
    }
}

module ctp()
{
    union()
    {
        translate([-47.0,14.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([71.0,14.0,0])  cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([11.5,82,0])    cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        if(shape==0)
        {
            lable("Lee Classic Turret Press");
            // Countersink carriage bolts
            translate([-47.0,14.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([71.0,14.0,head_thickness])  cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([11.5,82.0,head_thickness])  cylinder(r=head_diameter/2,h=head_thickness,center=false);
        }
    }
}

module lm()
{
    union()
    {
        translate([-70.0,10.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([32.0,10.0,0])  cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([-19.0,82.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        if(shape==0)
        {
            lable("Lee Load-Master");
            // Countersink carriage bolts
            translate([-70.0,10.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([32.0,10.0,head_thickness])  cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([-19.0,82.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
        }
    }
}

module rp()
{
    union()
    {
        translate([-19.0,10.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([19.0,10.0,0])  cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([0.0,72.0,0])   cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        if(shape==0)
        {
            lable("Lee Breech Lock Reloader Press");
            // Countersink carriage bolts
            translate([-19.0,10.0,head_thickness]) cylinder(r=head_diameter/2+0.5,h=head_thickness,center=false);
            translate([19.0,10.0,head_thickness])  cylinder(r=head_diameter/2+0.5,h=head_thickness,center=false);
            translate([0.0,72.0,head_thickness])   cylinder(r=head_diameter/2+0.5,h=head_thickness,center=false);
        }
    }
}

module blc()
{
    union()
    {
        translate([-37.0,37.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([8.0,13.0,0])   cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([-15.0,67.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        if(shape==0)
        {
            lable("Lee Breech Lock Challenger Press");
            // Countersink carriage bolts
            translate([-37.0,37.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([8.0,13.0,head_thickness])   cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([-15.0,67.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
        }
    }
}

module blcc()
{
    union()
    {
        translate([-53.0,39.5,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([32.0,10.0,0])  cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([-19.0,82.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        if(shape==0)
        {
            lable("Lee Breech Lock Classic Cast");
            // Countersink carriage bolts
            translate([-53.0,39.5,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([32.0,10.0,head_thickness])  cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([-19.0,82.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
        }
    }
}

module cc()
{
    union()
    {
        translate([-70.0,10.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([32.0,10.0,0])  cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([-19.0,82.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        if(shape==0)
        {
            lable("Lee Classic Cast");
            // Countersink carriage bolts
            translate([-70.0,10.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([32.0,10.0,head_thickness])  cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([-19.0,82.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
        }
    }
}

module pro()
{
    union()
    {
        translate([-70.0,10.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([32.0,10.0,0])  cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([-19.0,82.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        if(shape==0)
        {
            lable("Lee Pro 1000");
            // Countersink carriage bolts
            translate([-70.0,10.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([32.0,10.0,head_thickness])  cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([-19.0,82.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
        }
    }
}

module vtp()
{
    union()
    {
        translate([-70.0,10.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([32.0,10.0,0])  cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([-19.0,82.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        if(shape==0)
        {
            lable("Lee Value Turret Press");
            // Countersink carriage bolts
            translate([-70.0,10.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([32.0,10.0,head_thickness])  cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([-19.0,82.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
        }
    }
}

module lee18vtp()
{
    union()
    {
        translate([-59.0,14.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([32.0,10.0,0])  cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([-15.0,67.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        if(shape==0)
        {
            lable("2018+ Lee Value Turret Press");
            // Countersink carriage bolts
            translate([-59.0,14.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([32.0,10.0,head_thickness])  cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([-15.0,67.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
         }
    }
}

module rc()
{
    union()
    {
        translate([-34.0,42.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([34.0,42.0,0])  cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        if(shape==0)
        {
            lable("RCBS Rock Chucker");
            // Countersink carriage bolts
            translate([-34.0,42.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([34.0,42.0,head_thickness])  cylinder(r=head_diameter/2,h=head_thickness,center=false);
        }
    }
}

module partner()
{
    union()
    {
        translate([-21.0,19.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([21.0,19.0,0])  cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        translate([0.0,65.0,0]) cube([bolt_diameter+0.5,bolt_diameter+0.5,thickness+radius],center=true);
        if(shape==0)
        {
            lable("RCBS Partner");
            // Countersink carriage bolts
            translate([-21.0,19.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([21.0,19.0,head_thickness])  cylinder(r=head_diameter/2,h=head_thickness,center=false);
            translate([0.0,65.0,head_thickness]) cylinder(r=head_diameter/2,h=head_thickness,center=false);
        }
    }
}

module brassprep_a()
{
    union()
    {
        #translate([0,65.0,0]) cylinder($fn=100,r=6.35,h=thickness+radius,center=true);
        #translate([-20,40.0,0]) cylinder($fn=100,r=7.2,h=thickness+radius,center=true);
        #translate([-20,40.0,-0.75*thickness]) cylinder($fn=100,r=8.86,h=thickness+radius,center=true);
        #translate([20,40.0,0]) cylinder($fn=100,r=7.2,h=thickness+radius,center=true);
        #translate([20,40.0,-0.75*thickness]) cylinder($fn=100,r=8.86,h=thickness+radius,center=true);
        #translate([0,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius,center=false);
        #translate([20,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius,center=false);
        #translate([-20,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius,center=false);
        #translate([40,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius,center=false);
        #translate([-40,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius,center=false);
        #translate([60,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius,center=false);
        #translate([-60,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius,center=false);
        if(shape==0)
        {
            lable("Brass Prep Station MK I");
        }
    }
}
module brassprep_b()
{
    union()
    {
        #translate([0,65.0,0]) cylinder($fn=100,r=6.35,h=thickness+radius+1,center=true);
        #translate([-20,40.0,0]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=true);
        #translate([20,40.0,0]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=true);

        #translate([0,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        #translate([20,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        #translate([-20,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        #translate([40,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        #translate([-40,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        #translate([60,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        #translate([-60,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        if(shape==0)
        {
            lable("Brass Prep Station Mk II");
        }
    }
}

module brassprep_c()
{
    union()
    {
        #translate([0,65.0,0]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=true);
        #translate([-20,40.0,0]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=true);
        #translate([20,40.0,0]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=true);

        #translate([0,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        #translate([20,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        #translate([-20,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        #translate([40,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        #translate([-40,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        #translate([60,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        #translate([-60,15.0,-thickness]) cylinder($fn=6,r=3.65,h=thickness+radius+1,center=false);
        if(shape==0)
        {
            lable("Brass Prep Station Mk III");
        }
    }
}
//%translate([0,length/2,-thickness]) import_stl("./LeePlateComp.stl");

difference() // drill holes using correct pattern for each device
{
    base();
    if(device==1){ ctp(); }
    if(device==2){ lm(); }
    if(device==3){ rp(); }
    if(device==4){ blc(); }
    if(device==5){ blcc(); }
    if(device==6){ cc(); }
    if(device==7){ pro(); }
    if(device==8){ vtp(); }
    if(device==9){ lee18pro(); }
    if(device==10){ lee18vtp(); }
    if(device==11){ rc(); }
    if(device==12){ partner(); }
    if(device==13){ brassprep_a(); }
    if(device==14){ brassprep_b(); }
    if(device==15){ brassprep_c(); }
}

```


[User]
Hi! I'm looking to design some magnetic shoelace clasps, and I think I've got a good idea of what I need, but I need some help writing the OpenSCAD code for it.

Essentially, I want a two-part design: a base and a cap. The base will have slots for bar magnets and holes for the shoelaces. The cap will then attach on top, sealing the magnets in place and creating a nice smooth profile for the clasp. Here's what I need to be able to control:

**General Parameters**

*   **`inter_lace_distance`:** The horizontal distance between the lace holes.
*   **`lace_hole_diameter`:** The diameter of the lace holes.
*   **`preferred_width_of_each_block`:** I want to specify a preferred width, but I need a minimum width to accommodate the magnets, so the final width should be this or larger, whichever is larger.
*   **`num_lace_holes`:** The number of lace holes to include; this will determine the length of the overall block.
*   **`number_of_magnet_slots`:**  I want to have the option to use either one magnet slot in the middle of the clasp or two magnet slots, one on either side of the center. Can either be 1 or 2.
*    **`number_of_magnets_per_slot`**: The number of magnets to put in each slot, from 1 or 2; this will change the overall thickness of the block.
*   **`magnet_length`:** The length of the magnets.
*   **`magnet_width`:** The width of the magnets.
*   **`magnet_thickness`:** The thickness of the magnets.

**Base Details**

*   The base should have a rectangular shape.
*   The length of the base should be based on either the distance between the lace holes or the magnet length, whichever is greater. If two magnet slots are specified, the distance between them also needs to be factored in, as well as an additional offset for the end of the block.
*   The base should have rounded chamfered edges.
*  The magnets should be inset into slots on the base and centered, or placed an equal distance from the centerline of the block. The magnet slots should extend to slightly higher than the plane of the base, so it's easy to remove the parts from a 3D printer.
*  The lace holes should be evenly spaced along the length of the base, and I need the option to add chamfered edges to the holes, just like the main body.
*   I need to be able to use different size magnets, so the magnet slot size needs to be adjustable.
*  There should be a post hole on each of the extreme ends of the base on the inside to allow the cap to be secured. if two magnet slots are used, an additional post hole should be added in the middle. The post holes should be on the same side of the block as the magnets.

**Cap Details**

*   The cap should be a thin rectangular shape with rounded chamfered edges, just like the base.
*   The cap should have posts on the interior that fit into the holes on the base. If two magnet slots are used, an additional post should be added in the middle of the cap.
*  The cap should cover the magnets, and be the same overall length and width of the base.

I'd like all of the above to be parametric, so I can easily change the dimensions and number of components. Also, I don't want to rely on any external libraries.

Could you help me generate the OpenSCAD code for this? Thanks!

[Assistant]
magnetic_shoelaces.scad:
```

// Written by Volksswitch <www.volksswitch.org> based on an original design by adafruit
//
// To the extent possible under law, the author(s) have dedicated all
// copyright and related and neighboring rights to this software to the
// public domain worldwide. This software is distributed without any
// warranty.
//
// You should have received a copy of the CC0 Public Domain
// Dedication along with this software.
// If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
//

//------------------------------------------------------------------
// User Inputs
//------------------------------------------------------------------

/*[Shoe Laces]*/
inter_lace_distance = 20;
lace_hole_diameter = 5;

/*[Block Width]*/
preferred_width_of_each_block = 16;

/*[Magnets]*/
magnet_length = 20;
magnet_width = 5;
magnet_thickness = 3;
number_of_magnet_slots = 2; //[1:2]
number_of_magnets_per_slot = 2; //[1:2]

/* [Hidden] */
num_lace_holes = 3;

block_length1 = inter_lace_distance*(num_lace_holes - 1) + 10; //block length based on interlace distance
block_length2 = number_of_magnet_slots == 1 ? //block length based on magnet length
	  magnet_length + 10
	: magnet_length*2 + 15;
block_length = max(block_length1,block_length2);

magnet_slot_offset= (number_of_magnet_slots == 1) ?
	  0
	: (block_length-magnet_length*2)/6 + magnet_length/2;

block_thickness = magnet_width + 3;
effective_magnet_thickness = magnet_thickness * number_of_magnets_per_slot;

min_magnet_hole_distance = 1.5;
min_block_width = effective_magnet_thickness+lace_hole_diameter+min_magnet_hole_distance*2;
block_width = max(preferred_width_of_each_block-1,min_block_width);
magnet_hole_distance = (block_width-effective_magnet_thickness-lace_hole_diameter)/2;
hole_centerline = block_width/2-effective_magnet_thickness-magnet_hole_distance-lace_hole_diameter/2;

$fn = 50;

//base
translate([0,10,block_width/2])
difference(){
	//base
	cube([block_length,block_thickness,block_width],center=true);

	//chamfer base corners
	translate([-block_length/2,-block_thickness/2,0])
	rotate([0,0,90])
	cylinder(h=block_width+0.01, r=1, center=true, $fn=4);

	translate([-block_length/2,block_thickness/2,0])
	rotate([0,0,90])
	cylinder(h=block_width+0.01, r=1, center=true, $fn=4);

	translate([block_length/2,-block_thickness/2,0])
	rotate([0,0,90])
	cylinder(h=block_width+0.01, r=1, center=true, $fn=4);

	translate([block_length/2,block_thickness/2,0])
	rotate([0,0,90])
	cylinder(h=block_width+0.01, r=1, center=true, $fn=4);

	translate([block_length/2,0,-block_width/2])
	rotate([0,90,90])
	cylinder(h=block_thickness+0.01, r=1, center=true, $fn=4);

	translate([-block_length/2,0,-block_width/2])
	rotate([0,90,90])
	cylinder(h=block_thickness+0.01, r=1, center=true, $fn=4);

	translate([0,block_thickness/2,-block_width/2])
	rotate([90,0,90])
	cylinder(h=block_length+0.01, r=1, center=true, $fn=4);

	translate([0,-block_thickness/2,-block_width/2])
	rotate([90,0,90])
	cylinder(h=block_length+0.01, r=1, center=true, $fn=4);

	//lace holes
	translate([0,0,hole_centerline])
	rotate([90,0,0])
	cylinder(h=block_thickness+0.01, r=lace_hole_diameter/2, center = true);

	translate([-inter_lace_distance,0,hole_centerline])
	rotate([90,0,0])
	cylinder(h=block_thickness+0.01, r=lace_hole_diameter/2, center = true);

	translate([inter_lace_distance,0,hole_centerline])
	rotate([90,0,0])
	cylinder(h=block_thickness+0.01, r=lace_hole_diameter/2, center = true);

	//lace hole chamfers
	translate([0,-block_thickness/2-0.01,hole_centerline])
	rotate([-90,0,0])
	cylinder(h=1, r1=lace_hole_diameter/2+2, r2=lace_hole_diameter/2, center = true);

	translate([0,block_thickness/2+0.01,hole_centerline])
	rotate([90,0,0])
	cylinder(h=1, r1=lace_hole_diameter/2+2, r2=lace_hole_diameter/2, center = true);

	translate([-inter_lace_distance,-block_thickness/2-0.01,hole_centerline])
	rotate([-90,0,0])
	cylinder(h=1, r1=lace_hole_diameter/2+2, r2=lace_hole_diameter/2, center = true);

	translate([-inter_lace_distance,block_thickness/2+0.01,hole_centerline])
	rotate([90,0,0])
	cylinder(h=1, r1=lace_hole_diameter/2+2, r2=lace_hole_diameter/2, center = true);

	translate([inter_lace_distance,-block_thickness/2-0.01,hole_centerline])
	rotate([-90,0,0])
	cylinder(h=1, r1=lace_hole_diameter/2+2, r2=lace_hole_diameter/2, center = true);

	translate([inter_lace_distance,block_thickness/2+0.01,hole_centerline])
	rotate([90,0,0])
	cylinder(h=1, r1=lace_hole_diameter/2+2, r2=lace_hole_diameter/2, center = true);

	//magnet slots
	translate([magnet_slot_offset,0,block_width/2-effective_magnet_thickness/2+0.01])
	cube([magnet_length,magnet_width,effective_magnet_thickness],center=true);

	translate([-magnet_slot_offset,0,block_width/2-effective_magnet_thickness/2+0.01])
	cube([magnet_length,magnet_width,effective_magnet_thickness],center=true);

	//post holes
	if (number_of_magnet_slots == 2){
		translate([0,0,block_width/2-1.5+0.01])
		cylinder(h=3,r=1,center=true);
	}

	translate([block_length/2 - 2.5,0,block_width/2-1.5+0.01])
	cylinder(h=3,r=1,center=true);

	translate([-block_length/2 + 2.5,0,block_width/2-1.5+0.01])
	cylinder(h=3,r=1,center=true);
}

//cap
translate([0,-10,.5])
union(){
	difference(){
		cube([block_length,block_thickness,1],center=true);

		//chamfers
		translate([-block_length/2,-block_thickness/2,0])
		rotate([0,0,90])
		cylinder(h=1+0.01, r=1, center=true, $fn=4);

		translate([-block_length/2,block_thickness/2,0])
		rotate([0,0,90])
		cylinder(h=1+0.01, r=1, center=true, $fn=4);

		translate([block_length/2,-block_thickness/2,0])
		rotate([0,0,90])
		cylinder(h=1+0.01, r=1, center=true, $fn=4);

		translate([block_length/2,block_thickness/2,0])
		rotate([0,0,90])
		cylinder(h=1+0.01, r=1, center=true, $fn=4);

		translate([block_length/2,0,-.5])
		rotate([0,90,90])
		cylinder(h=block_thickness+0.01, r=1, center=true, $fn=4);

		translate([-block_length/2,0,-.5])
		rotate([0,90,90])
		cylinder(h=block_thickness+0.01, r=1, center=true, $fn=4);

		translate([0,block_thickness/2,-.5])
		rotate([90,0,90])
		cylinder(h=block_length+0.01, r=1, center=true, $fn=4);

		translate([0,-block_thickness/2,-.5])
		rotate([90,0,90])
		cylinder(h=block_length+0.01, r=1, center=true, $fn=4);
	}

	//posts for caps
	if (number_of_magnet_slots == 2){
		translate([0,0,1.5])
		cylinder(h=2,r=.75,center=true);
	}

	translate([block_length/2 - 2.5,0,1.5])
	cylinder(h=2,r=.75,center=true);

	translate([-block_length/2 + 2.5,0,1.5])
	cylinder(h=2,r=.75,center=true);
}

```


[User]
I'm looking to create a complex, spiraling shape using OpenSCAD, similar to what I've seen generated by rotating and translating cylinders. I was experimenting with some code but I'd like a more sophisticated, parametric version that's easy to customize.

Specifically, I want to define the following parameters:

*   **`rotation`**: Total degrees of rotation for the spiral (should be able to go beyond 360 for multiple rotations)
*   **`step`**: The increment of rotation for each cylinder (controlling the density)
*   **`X`, `Y`, `Z`**: The initial translation of the cylinder
*   **`Radius`**: The radius of the cylinders
*   **`Thickness`**: The height/thickness of the cylinders
*   **`Kb`, `Kb1`, `Kb2`**:  Rotation multipliers for each axis (X, Y, and Z, respectively). These will control the shape of the spiral as they will rotate the cylinders by a multiple of the current iteration.

The basic idea is to loop from 0 to `rotation` in increments of `step`. Inside the loop, I want to:

1.  Rotate a cylinder using a rotation vector calculated as `[b*Kb, b*Kb1, b*Kb2]` where `b` is the current iteration value.
2.  Translate the rotated cylinder to the location `[X, Y, Z]`.
3.  Create a cylinder with `r=Radius` and `h=Thickness` centered on its origin (center = true).

Can you generate an OpenSCAD file that does this? I think it's a pretty simple idea, but I'm amazed at the complex patterns this approach can generate. It would be cool if it were also able to work with different shapes than just cylinders. I'm not sure if that would be a separate function or something I can add to the current one.

[Assistant]
nodo1.scad:
```
$fn=12;

rotation=360;
step=0.04;

X=20;
Y=20;
Z=0;
Radius=1;
Thickness=1;

Kb=0.5;
Kb1=15;
Kb2=15;

              for (b=[0:step:rotation])
              {
                  rotate([b*Kb,b*Kb1,b*Kb2])
                  translate([X,Y,Z])
                  cylinder(r=Radius,h=Thickness,center=true);
              }

```


[User]
Hey, I'm looking to get a custom design for a flexible, protective case for my drone batteries. I saw this really cool customizable thing on Thingiverse called PackWrap but I’d like to generate it from scratch. It's essentially a flat piece of TPU that folds into a four-sided box around the battery, with some cool features.

Here's what I need:

*   **Battery Dimensions:** The design needs to be parametric so I can specify my battery's width, length, and depth in millimeters.
*   **Strap Options:** I want to be able to specify the number of battery straps (0 to 3). I also want to control the width of each strap slot, the spacing between the slots if there's more than one, and an offset to adjust their center position.
*   **PackWrap Specs:** I need to control the wall thickness, base thickness (which also impacts tab and joint thickness), and the thickness of a front bumper.
*   **Rear Options:** I'd like to be able to choose between three rear options: no strap, a single rear strap, or slots for a second battery strap.
*  **Tab Count:** It would be awesome if I could specify whether I need one or two tabs on the side of the wrap to help hold it closed.
*   **Stripe Details:** I'd like to have these stripe details like in the example, but as the generator of the code you should create the number of stripes, their depth and width, and place them correctly.

The whole thing should be designed in OpenSCAD, and the core idea is that it should be flexible to print in TPU without supports. I'd really appreciate it if it could be a single .scad file that I can easily modify.

Thanks!

[Assistant]
PackWrap_V2.scad:
```
/* [Battery Dimensions] */
//The width of your battery in mm, determines the width of the center section.
batteryWidth = 34; //[20:150]
//The length of your battery in mm, determines the length of the PackWrap.
batteryLength = 90; //[20:300]
//The depth of your battery in mm, determines the width of the side sections.
batteryDepth = 28; //[20:150]

/* [Strap Options] */
//Larger batteries may require more straps.
strapCount = 1; //[0,1,2,3]
//Width of your battery strap in mm, determines the size of the space in the center section.
strapWidth = 20; //[0:40]
//Determines the distance between straps if using more than one.
strapSeperation = 20; //[5:200]
//Offsets the center of the strap(s) in mm.
strapCenterOffset = 0; //[-300:300]

/* [PackWrap Specs] */
//Determines how thick to print the walls in mm (in addition to the base thickness below).
wallThickness = 1.5; //[0:0.1:3]
//Thickness of the base in mm, determines tab and joint thickness.  Probably does not need to be changed if printing with TPU.
baseThickness = 1; //[0.5:0.1:3]
//Determines thicknes of the front "bumper" in mm.
bumperThickness = 5; //[0:15]

/* [Additional Options] */
//You can choose to add a strap to the rear for wire and battery retention, slots to use a second battery strap, or leave the rear open.
rearOption = "None"; //[None,Strap,Slots]
//Larger batteries may require additional tabs for the PackWrap to hold its shape.
tabCount = 1; //[1,2]

module stripe(){
    rotate([0,0,45]){
        translate([0,-batteryDepth/2+5,0]){
            hull(){
                cylinder(h=wallThickness+baseThickness*4, d=4, center=true, $fn=16);
                translate([0,batteryDepth-10,0]){
                    cylinder(h=wallThickness+baseThickness*4, d=4, center=true, $fn=16);
                }
            }
        }
    }
}

module stripes(){
    stripeClearance = (batteryDepth/sqrt(2))/2+8;
    stripeCount = floor((batteryLength-15)/stripeClearance);
    stripeOffset = batteryLength/stripeCount;
    echo (stripeCount);

    translate([-(batteryLength)/2,0,0]){
        for(i=[1:1:stripeCount-1]){
            translate([stripeOffset*i,0,0]){
                stripe();
            }
        }
    }
}

module strapTab(){
    tabHeight = baseThickness+0.4;
    translate([0,0,-(tabHeight)]){
        cylinder(h=tabHeight, d=5, $fn=24);
    }
    translate([0,0,-(tabHeight+1.5)]){
        cylinder(h=1.5, d1=8, d2=5, $fn=24);
    }
    translate([0,0,-(tabHeight+3.5)]){
        cylinder(h=2, d=8, $fn=24);
    }
}

rotate([180,0,0]){
//center
difference(){
translate([0,0,0]){

    cube([batteryLength, batteryWidth, baseThickness], true);
    translate([0,0,-baseThickness/2]){
        hull(){
            cube([batteryLength, batteryWidth, 0.0001], true);

            translate([0,0,-wallThickness]){
                cube([batteryLength-(wallThickness*sqrt(2)*2), batteryWidth-wallThickness*(wallThickness*sqrt(2)*2), 0.0001], true);
            }
        }
    }
}
if(strapCount>0){
    if(strapCount==1){
        translate([strapCenterOffset,0,0]){
            cube([strapWidth, batteryWidth, batteryWidth+wallThickness+5], true);
        }
    }else if(strapCount==2){
        translate([strapCenterOffset+(strapWidth/2)+(strapSeperation/2),0,0]){
            cube([strapWidth, batteryWidth, batteryWidth+wallThickness+5], true);
        }
        translate([strapCenterOffset-(strapWidth/2)-(strapSeperation/2),0,0]){
            cube([strapWidth, batteryWidth, batteryWidth+wallThickness+5], true);
        }
    }else if(strapCount==3){
        translate([strapCenterOffset+strapWidth+(strapSeperation),0,0]){
            cube([strapWidth, batteryWidth, batteryWidth+wallThickness+5], true);
        }
        translate([strapCenterOffset,0,0]){
            cube([strapWidth, batteryWidth, batteryWidth+wallThickness+5], true);
        }
        translate([strapCenterOffset-strapWidth-(strapSeperation),0,0]){
            cube([strapWidth, batteryWidth, batteryWidth+wallThickness+5], true);
        }
    }
}
}

//right
difference(){
    translate([0,batteryWidth/2+batteryDepth/2,0]){
        cube([batteryLength, batteryDepth, baseThickness], true);

        translate([0,0,-baseThickness/2]){
            hull(){
                cube([batteryLength, batteryDepth, 0.0001], true);
                translate([0,0,-wallThickness]){
                    cube([batteryLength-(wallThickness*sqrt(2)*2), batteryDepth-wallThickness*(wallThickness*sqrt(2)*2), 0.0001], true);
                }
            }
        }

        if(rearOption == "Strap"){
            translate([-batteryLength/2+8,0,-(baseThickness/2+wallThickness)]){
                strapTab();
            }
        }

        if(tabCount == 1){
            translate([batteryLength/2-8,0,-(baseThickness/2+wallThickness)]){
                strapTab();
            }
        }else if(tabCount == 2){
            translate([batteryLength/2-8,batteryDepth/5,-(baseThickness/2+wallThickness)]){
                strapTab();
            }
            translate([batteryLength/2-8,-batteryDepth/5,-(baseThickness/2+wallThickness)]){
                strapTab();
            }
        }
    }
    translate([0,batteryWidth/2+batteryDepth/2,0]){stripes();}

    if(rearOption == "Slots"){
        translate([-batteryLength/2+5,batteryWidth/2+batteryDepth/2-strapWidth/2,-5]){cube([3,strapWidth,10]);}
    }
}

//left
difference(){
    translate([0,-batteryWidth/2-batteryDepth/2,0]){
        cube([batteryLength, batteryDepth, baseThickness], true);
            translate([0,0,-baseThickness/2]){
                hull(){
                    cube([batteryLength, batteryDepth, 0.0001], true);
                    translate([0,0,-wallThickness]){
                        cube([batteryLength-(wallThickness*sqrt(2)*2), batteryDepth-wallThickness*(wallThickness*sqrt(2)*2), 0.0001], true);
                    }
                }
            }

            if(tabCount == 1){
                translate([batteryLength/2-8,0,-(baseThickness/2+wallThickness)]){
                    strapTab();
                }
            }else if(tabCount == 2){
                translate([batteryLength/2-8,batteryDepth/5,-(baseThickness/2+wallThickness)]){
                    strapTab();
                }
            translate([batteryLength/2-8,-batteryDepth/5,-(baseThickness/2+wallThickness)]){
                strapTab();
            }
        }
    }
    translate([0,-(batteryWidth/2+batteryDepth/2),0]){
        rotate([180,0,0]){
            stripes();
        }
    }

if(rearOption == "Slots"){
        translate([-batteryLength/2+5,-batteryWidth/2-batteryDepth/2-strapWidth/2,-5]){cube([3,strapWidth,10]);}
    }
}

if(rearOption == "Strap"){
    translate([-batteryLength/2-batteryWidth-8,-batteryWidth/2-batteryDepth/2-6,-baseThickness/2]){
        difference(){
            hull(){
                cube([batteryWidth+8, 12,baseThickness]);
                translate([0,6,0])cylinder(h=baseThickness, d=12, $fn=24);
            }
            translate([0,6,-1])cylinder(h=baseThickness+2, d=6, $fn=24);
        }
    }
}

//top/bumper
translate([batteryLength/2+batteryDepth/2,0,0]){
    difference(){
        hull(){
            cube([batteryDepth, batteryWidth, baseThickness], true);
            if(tabCount == 1){
                translate([0, batteryWidth/2+10, 0]){
                    cylinder(h=baseThickness, d=15, $fn=24, center=true);
                }
                translate([0, -(batteryWidth/2+10), 0]){
                    cylinder(h=baseThickness, d=15, $fn=24, center=true);
                }
            }else if(tabCount == 2){
                translate([batteryDepth/5, batteryWidth/2+10, 0]){
                    cylinder(h=baseThickness, d=15, $fn=24, center=true);
                }
                translate([-batteryDepth/5, batteryWidth/2+10, 0]){
                    cylinder(h=baseThickness, d=15, $fn=24, center=true);
                }
                translate([batteryDepth/5, -(batteryWidth/2+10), 0]){
                    cylinder(h=baseThickness, d=15, $fn=24, center=true);
                }
                translate([-batteryDepth/5, -(batteryWidth/2+10), 0]){
                    cylinder(h=baseThickness, d=15, $fn=24, center=true);
                }
            }
        }
        if(tabCount == 1){
            translate([0, batteryWidth/2+10, 0]){
                cylinder(h=baseThickness+1, d=6, $fn=24, center=true);
            }
            translate([0, -(batteryWidth/2+10), 0]){
                cylinder(h=baseThickness+1, d=6, $fn=24, center=true);
            }
        }else if (tabCount == 2){
            translate([batteryDepth/5, batteryWidth/2+10, 0]){
                cylinder(h=baseThickness+1, d=6, $fn=24, center=true);
            }
            translate([-batteryDepth/5, batteryWidth/2+10, 0]){
                cylinder(h=baseThickness+1, d=6, $fn=24, center=true);
            }
            translate([batteryDepth/5, -(batteryWidth/2+10), 0]){
                cylinder(h=baseThickness+1, d=6, $fn=24, center=true);
            }
            translate([-batteryDepth/5, -(batteryWidth/2+10), 0]){
                cylinder(h=baseThickness+1, d=6, $fn=24, center=true);
            }
        }
    }

    translate([0,0,-baseThickness/2]){
        hull(){
            cube([batteryDepth, batteryWidth, 0.0001], true);

            translate([0,0,-bumperThickness]){
                cube([batteryDepth*.75-(wallThickness*sqrt(2)*2), batteryWidth*.75-wallThickness*(wallThickness*sqrt(2)*2), 0.0001], true);
            }
        }
    }
}
}

```


[User]
Okay, I'm working on a mini underwater ROV project and need some propellers. I want to be able to customize them for different builds, and I'm looking for a parametric OpenSCAD file to do it. I'd like to be able to control the following:

*   **Number of blades:** I need to be able to specify how many blades the propeller has.
*   **Blade Diameters:** I want to control the diameter of the blades at their base (where they connect to the center hub) and at their top (or outer edge).  These two can be different to get different blade shapes.
*   **Hub Diameters:** Similar to the blades, I want to control the diameter of the central cylinder, or hub, at its base and top. Again, these can be different.
*   **Motor Shaft Hole:** The propeller needs a hole in the center for the motor shaft; I need to be able to specify that diameter.
*   **Blade Thickness:** I need to specify the thickness of the blades.
*   **Total Height:**  The overall height of the propeller should be customizable.
*   **Propeller Rotation (Twist):**  I need to control the amount the propeller twists from its base to its top, in degrees.
*   **Rounding:** I'd like to be able to round the edges of the propeller blades by using a sphere as a minkowski for smoother transitions. I want to specify the diameter of the sphere used.

Essentially, I want a propeller that starts with a cylinder at the center, blades coming off of that cylinder, and a hole for the motor shaft. The blades can twist as they go up, and everything should be adjustable.

I'd also need the code to generate a test case. Let's do two test propellers: one with a 40mm max diameter (using a blade base diameter of 40 and top of 8), and another with a 50mm max diameter (using a base of 50, top of 10). Both of these should fit a 2.2mm motor shaft.

I don't need to have the stl files, just the SCAD files to create them.

[Assistant]
parametric_propeller.scad:
```
//number of Blades
blades = 3;

//base diameter of propeller blades
prop_diameter1 = 50;

//top diameter of propeller blades
prop_diameter2 = 10;

//base diameter of main cylinder
prop_shaft_diameter1 = 5;

//top diameter of main cylinder
prop_shaft_diameter2 = 5;

//diameter of hole
motor_shaft_diameter = 2.2;

blade_thickness = 1.5;

//total height
prop_height = 15;

//amount in degrees the propeller rotates from bottom to top
prop_rotation = 60;

//gives the propeller blades a rounded look. DO NOT EXCEED PROP_HEIGHT
rounding_diameter = 5;

/* [Hidden] */

$fn = 100;

module blade() {
    prop_diameter=max([prop_diameter1,prop_diameter2]);
    linear_extrude(height=prop_height, center=true, convexity=10, twist=prop_rotation, slices=50) {
        translate([0,-blade_thickness/2]) square([prop_diameter/2, blade_thickness]);
    }
}

module rounding_block() {
    minkowski() {
        cylinder(h=prop_height-rounding_diameter, d1=prop_diameter1-rounding_diameter, d2=prop_diameter2-rounding_diameter, center=true);
        sphere(d=rounding_diameter);
    }
}

module propeller() {
    difference() {
        intersection() {
            union() {
                for (i = [0:360/blades:360]) {
                    rotate([0,0,i]) blade();
                }
                cylinder(h=prop_height, d1=prop_shaft_diameter1, d2=prop_shaft_diameter2, center=true);
            }
            rounding_block();
        }
        cylinder(h=prop_height, d=motor_shaft_diameter, center=true);
    }
}

propeller();
//rounding_block();

```