[User]
I'd like to design a pair of helical gears that mesh at a right angle, similar to a worm gear setup but with both gears having teeth. I want to be able to control several parameters like the number of teeth on each gear, their height, the separation between their centers, and the bore diameter for the shafts they'll attach to. It's important that the code calculates the gear module based on the center separation and tooth counts I provide. Also, I'd like an option to add a chamfer to the edges of the gears for a nicer finish and to potentially improve engagement smoothness. Finally, I need to be able to specify the chirality (left-handed or right-handed) of the helical teeth.

The idea is that one gear will sit vertically, and the other will mesh horizontally, creating the right angle transmission. I'd like to control which gear (or both) are displayed.

Here are the specific parameters I need to be able to modify:

*   **separation**: The distance between the centers of the two gears.
*   **teeth1**: The number of teeth on the first gear.
*   **teeth2**: The number of teeth on the second gear.
*   **h1**: The height of the first gear.
*   **h2**: The height of the second gear.
*   **d1**: The bore diameter for the first gear.
*   **d2**: The bore diameter for the second gear.
*   **chamfer**: The size of the chamfer to apply to the gear edges.
*   **chirality**: Whether the helix should be left-handed or right-handed.
*   **view**: Whether to display the first gear, the second gear, or both gears.
*   **mesh_correction**: An adjustment factor to correct the gear rotation when viewing both gears.
*  **iterations**: The number of iterations used when generating the gear profile.

I'll need a parametric design, so I can easily modify all those values. I'm expecting the code to compute the "module" of the gears based on the `separation` and the number of teeth on each gear. I would like the scad to include a function to make the gears have the chamfered edges. Also the output needs to have a `gear_helix` module for the helical tooth design (or something similar to what I describe below) as well as the chamfering module.

Also, I need to be able to specify what parts are shown in the preview. I'd like the option to view gear 1, gear 2, or both together. The second gear needs to be rotated and translated into the correct position so both gears mesh at a right angle when the view setting is set to "both gears". I'll also need a parameter that allows me to "correct" the rotation of the gears so that they mesh correctly for display purposes.

The `gear_helix` module I'd like should be customizable based on the standard gear parameters such as `m` (module), `z` (number of teeth), `h` (height), `w_helix` (helix angle, 45 for this design), and `x` (profile shift, 0). The gear should have a hole in the center, and the teeth should be defined based on the standard gear tooth profile. I don't need to use any external libraries for this design.

[Assistant]
gears.scad:
```
// gears.scad
// library for parametric involute gears
// Author: Rudolf Huttary, Berlin
// last update: June 2016

// Modifications by Hans Loeblich, June 2018
//  - make customizer script for 45 degree helix gears, right angle connection
//  - Derive module for a pair of gears based on separation and tooth counts
//  - add shaft hole
//  - add chamfer to smooth sharp corners and look cool (also hypothetically make engagement smoother/quieter, especially with a smooshed first layer)
//  - specify helix chirality as left/right handed
//  - pass iterations as parameter
//  - use $fs for determining vertical slices of linear_extrude

// Distance between meshed gear centers
separation = 44;
// Number of teeth on first gear
teeth1 = 16;
// Number of teeth on second gear
teeth2 = 32;
// Height of first gear
h1 = 15;
// Height of second gear
h2 = 15;
// Bore inner diameter
d1 = 8;
// Bore inner diameter
d2 = 8;
// Chamfer ends of gear
chamfer = 2; // [0:0.1:5]
chirality = 1; // [0:left-handed, 1:right-handed]

/* [View/Export] */
view = 3; // [1:first gear,2:second gear,3:both gears]
// When viewing "both gears", gear rotation may need adjustment for the teeth to appear meshed without intersecting.
mesh_correction = 0.5; // [0:0.01:1]
verbose = false;   // set to false if no console output is desired

/* [Hidden] */

iterations = 120; // increase for enhanced resolution beware: large numbers will take lots of time!

VIEW_FIRST = 1;
VIEW_SECOND = 2;
VIEW_BOTH = 3;

// $fs,$fa affect vertical resolution and shaft bore resolution (but not gear tooth profile)
$fs = 0.5;
$fa = 0.1;

m = separation / ((teeth1+teeth2)/2);

if (view == VIEW_FIRST || view == VIEW_BOTH) {
rotate([0,0,360/teeth1*mesh_correction])
  chamfered_gear(m, teeth1, h1, d1, chamfer, chirality, iterations);
}

if (view == VIEW_SECOND) {
  chamfered_gear(m, teeth2, h2, d2, chamfer, chirality, iterations);
} else if (view == VIEW_BOTH) {
  translate([0,separation,0]) rotate([0,90,0])
    chamfered_gear(m, teeth2, h2, d2, chamfer, chirality, iterations);
}

module chamfered_gear(m, z, h, d, chamfer, chirality, iterations=150) {
  if (verbose) echo(str(
  "chamfered_gear(",m,",",z,",",h,",",d,",",chamfer,",",chirality,",",iterations,");"
  ));

  x = 0;

  intersection() {
    difference() {
      gear_helix(m = m, z = z, x = x, h = h, w = 20, w_helix = chirality ? -45 : 45, w_abs = 0, clearance = 0.1, center = true, verbose = verbose, iterations=iterations);
      cylinder(d=d, h=h+2, center=true);
    }

  	r_wk = m*z/2 + x;
   	dy = m;
  	r_kk = r_wk + dy;

    x1 = r_kk;
    if (chamfer > 0) rotate_extrude() polygon([
      [0,-h/2-chamfer], [x1-2*chamfer, -h/2-chamfer],
      [x1+chamfer,-h/2+2*chamfer], [x1+chamfer, h/2-2*chamfer],
      [x1-2*chamfer,h/2+chamfer], [0, h/2+chamfer]
  ]);
  }
}
//help();  // display module prototypes
// default values
// z = 10; // teeth - beware: large numbers may take lots of time!
// m = 1;  // modulus
// x = 0;  // profile shift
// h = 4;  // face_width	respectively axial height
// w = 20; // profile angle
// clearance  // assymmetry of tool to clear tooth head and foot
//    = 0.1; // for external splines
//    = -.1  // for internal splines
// w_bevel = 45; // axial pitch angle
// w_helix = 45; // radial pitch angle

// use this prototype:
// gear(m = modulus, z = Z, x = profile_shift, w = alpha, h = face_width);

//====  external splines with default values ===
// gear();
// gear_helix();
// gear_herringbone();
// gear_bevel();

//====  internal splines with default values ===
// Gear();
// Gear_helix();
// Gear_herringbone();
// Gear_bevel();
//

//====  internal splines - usage and more examples ===
// gear(z = 25, m = 1, x = -.5, h = 4);
// gear_bevel(z = 26, m = 1, x = .5, h = 3, w_bevel = 45, w_helix = -45);
// gear_helix(z = 16, m = 0.5, h = 4, w_helix = -20, clearance = 0.1);
//  gear_herringbone(z = 16, m = 0.5, h = 4, w_helix = -45, clearance = 0.1); // twist independent from height
// gear_herringbone(z = 16, m = 0.5, h = 4, w_abs = -20, clearance = 0.1);  // twist absolute

//====  external splines - usage and more examples ===
// D ist calculated automatically, but can also be specified
//
// Gear(z = 10, m = 1.1, x = 0, h = 2, w = 20,  D=18, clearance = -0.2);
// gear(z = 10, m = 1, x = .5, h = 4, w = 20, clearance = 0.2);

// Gear_herringbone(z = 40, m = 1, h = 4, w_helix = 45, clearance = -0.2, D = 49);
// gear_herringbone(z = 40, m = 1, h = 4, w_helix = 45, clearance = 0.2);

// Gear_helix(z = 20, m=1.3, h = 15, w_helix = 45, clearance = -0.2);
// gear_helix(z = 20, m=1.3, h = 15, w_helix = 45, clearance = 0.2);

// ====  grouped examples ===
//	di = 18; //axial displacement
//	translate([di, di])   Gear(z = 25, D=32);
//	translate([-di, di])  Gear_helix(z = 25, D=32);
//	translate([-di, -di]) Gear_herringbone(z = 25, D=32);
//	translate([di, -di])  Gear_bevel(z = 25, D=32);

//	di = 8; //axial displacement
//	translate([di, di])   gear();
//	translate([-di, di])  gear_helix();
//	translate([-di, -di]) gear_herringbone();
//	translate([di, -di])  gear_bevel();

// profile shift examples
//	di = 9.5; //axial displacement
//	gear(z = 20, x = -.5);
//	translate([0, di+3]) rotate([0, 0, 0]) gear(z = 7, x = 0, clearance = .2);
//	translate([di+3.4, 0]) rotate([0, 0, 0]) gear(z = 6, x = .25);
//	translate([0, -di-3]) rotate([0, 0, 36])   gear(z = 5, x = .5);
//	translate([-di-3.675, 0]) rotate([0, 0, 22.5]) gear(z = 8, x = -.25);

// tooth cutting principle - dumping frames for video
//	s = PI/6;
//	T= $t*360;
//  U = 10*PI;
//  difference()
//  {
//    circle(6);  // workpiece
//    for(i=[0:s:T])
//      rotate([0, 0, -i])
//      translate([-i/360*U, 0, 0])
//      Rack();  // Tool
//    }
//	rotate([0, 0, -T])
//	translate([-T/360*U, 0, 0])
//	color("red")
//  Rack();  // Tool

// === modules for internal splines
module help()
{
helpstr =
"gears library \n
  iterations = 150;\n
  verbose = true;\n
  help();\n
  gear(m = 1, z = 10, x = 0, h = 4, w = 20, clearance = 0.1, center = true);\n
  gear_helix(m = 1, z = 10, x = 0, h = 4, w = 20, w_helix = 45, w_abs = 0, clearance = 0.1, center = true, verbose = true);\n
  gear_herringbone(m = 1, z = 10, x = 0, h = 4, w = 20, w_helix = 45, w_abs = 0, clearance = 0.1, center = true);\n
  gear_bevel(m = 1, z = 10, x = 0, h = 4, w = 20, w_bevel = 45, w_helix = 45, w_abs = 0, clearance = 0.1, center = true);\n
  gear_info(m = 1, z = 10, x = 0, h = 0, w = 20, w_bevel = 0, w_helix = 0, w_abs=0, clearance = 0.1, center=true);\n
annular-toothed;\n
  Gear(m = 1, z = 10, x = 0, h = 4, w = 20, D = 0, clearance = -.1, center = true);\n
  Gear_herringbone(m = 1, z = 10, x = 0, h = 4, w = 20, w_helix = 45, w_abs = 0, D = 0, clearance = -.1, center = true);\n
  Gear_helix(m = 1, z = 10, x = 0, h = 4, w = 20, w_helix = 45, w_abs=0, D = 0, clearance = -.1, center = true);\n
  Gear_bevel(m = 1, z = 10, x = 0, h = 4, w = 20, w_bevel = 45, w_helix = 0, w_abs = 0, D = 0, clearance = -0.1, center = true);\n
2D primitives\n
  gear2D(m = 1, z = 10, x = 0, w = 20, clearance = 0.1);\n
  Rack(m = 1, z = 10, x = 0, w = 20, clearance = 0);\n
  ";
 echo(helpstr);
}

module Gear(m = 1, z = 10, x = 0, h = 4, w = 20, D = 0, clearance = -.1, center = true, iterations=150)
{
   D_= D==0 ? m*(z+x+4):D;
   difference()
   {
		cylinder(r = D_/2, h = h, center = center);
		gear(m, z, x, h+1, w, center = center, clearance = clearance, iterations);
	}
  if(verbose) echo(str("Ring (D) = ", D_));
}

module Gear_herringbone(m = 1, z = 10, x = 0, h = 4, w = 20, w_helix = 45, w_abs = 0, D = 0, clearance = -.1, center = true)
{
   D_= D==0 ? m*(z+x+4):D;
   difference()
   {
		cylinder(r = D_/2, h = h, center = center); // CSG!
    translate([0, 0, -.001])
		gear_herringbone(m, z, x, h+.01, w, w_helix, w_abs, clearance = clearance, center = center);
	}
  if(verbose) echo(str("Ring (D) = ", D_));
}

module Gear_helix(m = 1, z = 10, x = 0, h = 4, w = 20, w_helix = 45, w_abs=0, D = 0, clearance = -.1, center = true)
{
   D_= D==0 ? m*(z+x+4):D;
   difference()
   {
		cylinder(r = D_/2, h = h-.01, center = center); // CSG!
		gear_helix(m, z, x, h, w, w_helix, w_abs, clearance, center);
	}
  if(verbose) echo(str("Ring (D) = ", D_));
}

module Gear_bevel(m = 1, z = 10, x = 0, h = 4, w = 20, w_bevel = 45, w_helix = 0, w_abs = 0, D = 0, clearance = -0.1, center = true)
{
   D_= D==0 ? m*(z+x+4):D;
   rotate([0, 180, 0])
   difference()
   {
		cylinder(r = D_/2, h = h-.01, center = center); // CSG!
		gear_bevel(m, z, x, h, w, w_bevel, w_helix, w_abs, clearance = clearance, center = center);
	}
  if(verbose) echo(str("Ring (D) = ", D_));
}

// === modules for external splines
module gear_herringbone(m = 1, z = 10, x = 0, h = 4, w = 20, w_helix = 45, w_abs = 0, clearance = 0.1, center = true)
{
  gear_info("herringbone", m, z, x, h, w, undef, w_abs==0?w_helix:undef, w_abs==0?undef:w_abs, clearance, center);
  translate([0, 0, center?0:h/2])
   for(i=[0, 1])
   mirror([0,0,i])
   gear_helix(m, z, x, h/2, w, w_helix, w_abs, center = false, clearance = clearance, center = false, verbose = false);
}

module gear_helix(m = 1, z = 10, x = 0, h = 4, w = 20, w_helix = 45, w_abs = 0, clearance = 0.1, center = true, verbose = true, iterations=150)
{
  if(verbose)
    gear_info("helix", m, z, x, h, w, undef, w_abs==0?w_helix:undef, w_abs==0?undef:w_abs, clearance, center);
	r_wk = m*z/2 + x;
  tw = w_abs==0?h/tan(90-w_helix)/PI*180/r_wk:w_abs;
  sl = abs(tw)>0?round(h/$fs):1;
	linear_extrude(height = h, center = center, twist = tw, slices = sl, convexity = z, center = center)
   gear2D(m, z, x, w, clearance, iterations);
}

module gear_bevel(m = 1, z = 10, x = 0, h = 4, w = 20, w_bevel = 45, w_helix = 0, w_abs = 0, clearance = 0.1, center = true, iterations=150)
{
  gear_info("bevel", m, z, x, h, w, w_bevel, w_abs==0?w_helix:undef, w_abs==0?undef:w_abs, clearance, center);
	r_wk = m*z/2 + x;
   sc = (r_wk-tan(w_bevel)*h)/r_wk;
  tw = w_abs==0?h/tan(90-w_helix)/PI*180/r_wk:w_abs;
  sl = abs(tw)>0 ? round(h / $fs) : 1;
	linear_extrude(height = h, center = center, twist = tw, scale = [sc, sc], slices = sl, convexity = z)
   gear2D(m, z, x, w, clearance, iterations);
}

module gear(m = 1, z = 10, x = 0, h = 4, w = 20, clearance = 0.1, center = true, iterations = 150)
{
  gear_info("spur", m, z, x, h, w, undef, undef, undef, clearance, center);
	linear_extrude(height = h, center = center, convexity = z)
    gear2D(m, z, x, w, clearance, iterations);
}

module gear_info(type = "", m = 1, z = 10, x = 0, h = 0, w = 20, w_bevel = 0, w_helix = 0, w_abs=0, clearance = 0.1, center=true, D=undef, verbose=true)
{
  	r_wk = m*z/2 + x;
   	dy = m;
  	r_kk = r_wk + dy;
  	r_fk = r_wk - dy;
  	r_kkc = r_wk + dy *(1-clearance/2);
  	r_fkc = r_wk - dy *(1+clearance/2);
  if(verbose)
  {
   echo(str ("\n"));
   echo(str (type, " gear"));
   echo(str ("modulus (m) = ", m));
   echo(str ("teeth (z) = ", z));
   echo(str ("profile angle (w) = ", w, "°"));
   echo(str ("pitch (d) = ", 2*r_wk));
   echo(str ("d_outer = ", 2*r_kk, "mm"));
   echo(str ("d_inner = ", 2*r_fk, "mm"));
   echo(str ("height (h) = ", h, "mm"));
   echo(str ("clearance factor = ", clearance));
   echo(str ("d_outer_cleared = ", 2*r_kkc, "mm"));
   echo(str ("d_inner_cleared = ", 2*r_fkc, "mm"));
   echo(str ("helix angle (w_helix) = ", w_helix, "°"));
   echo(str ("absolute angle (w_abs) = ", w_abs, "°"));
   echo(str ("bevel angle (w_bevel) = ", w_bevel, "°"));
   echo(str ("center  = ", center));
  }
}

// === from here 2D stuff ==
module gear2D(m = 1, z = 10, x = 0, w = 20, clearance = 0.1, iterations)
{
  	r_wk = m*z/2 + x;
    U = m*z*PI;
   	dy = m;
  	r_fkc = r_wk + dy *(1-clearance/2);
  s = 360/iterations;
  difference()
  {
    circle(r_fkc, $fn=300);  // workpiece
    //circle(d=8); // shaft bore
    for(i=[0:s:360])
      rotate([0, 0, -i])
      translate([-i/360*U, 0, 0])
      Rack(m, z, x, w, clearance);  // Tool
  }
}

module Rack(m = 1, z = 10, x = 0, w = 20, clearance = 0)
  {
    p = m*PI;
    dy = 2*m;
    dx = dy * tan(w);
    ddx = dx/2 * clearance/2;
    ddy = dy/2 * clearance/2;
    r_wk = m*z/2 + x;
    y0 = r_wk+dy;
    y1 = r_wk+dy/2-ddy;
    y2 = r_wk+dy/2 - ddy;
    y3 = r_wk-dy/2 - ddy;
    x0 = p/4-dx/2 + ddx;
    x1 = p/4+dx/2 + ddx;
    x2 = 3*p/4-dx/2 - ddx;
    x3 = 3*p/4+dx/2 - ddx;
    polygon(points = tooth(z));

    function tooth(z = 10) = concat([[-p, y0],[-p, y1]],
		[for(i=[-1:z], j=[0:3]) to(i*p)[j]], [[(z+1)*p, y1], [(z+1)*p, y0]]);

    function to(dx) = [[dx+x0, y2], [dx+x1, y3], [dx+x2, y3], [dx+x3, y2]];
}

```


[User]
I'd like a custom pencil holder designed in OpenSCAD. It should have a cylindrical base with vertical ribs running along the outside. The overall shape should be generated using a cosine function, so it curves in and out slightly along its height.

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

*   `radius`: The base radius of the cylinder.
*   `thickness`: The thickness of the cylinder wall.
*   `height`: The total height of the pencil holder.
*   `ribs`: The number of vertical ribs around the cylinder.
*   `riblength`: The length that the ribs extend out from the base cylinder.
*   `ribthickness`: The thickness of each rib.
*    `layers`: the number of layers to use when generating the cylinder
*   `curvyness`: How much the cylinder curves in and out based on the cosine function.

The base shape should be created by using a loop that steps through several layers up the height, using the cosine function to alter the radius and then creating a series of short cylinders between those radii. The ribs should be created as a linear extrude of squares along the outside, rotated around the central axis. Finally, a central cylinder should be cut out to make the inside of the holder. I think using a `difference()` operation with a `union()` of the main shape and the ribs, then a cut-out for the central cylinder would work best.

I'm not familiar with any of the specialized libraries, so I'm hoping this can all be done with OpenSCAD's built-in functions.

[Assistant]
geribte-koker.scad:
```
// Testje

radius = 50;
thickness = 8;
height = 130;
ribs = 30;
riblength = 6;
ribthickness = 4;
layers = 100;
curvyness = 3;

difference() {

    union() {
        cil(radius);

        intersection() {
            ribs();
//            #minkowski() {
                cil(radius + riblength);
//                sphere(10);
//            }
        }
    }

    hole();
}

module cil(radius) {
    for (layer = [0: height/layers: height - height/layers]) {
        translate([0, 0, layer]) {
            r = curve(radius, layer, height);
            rn = curve(radius, layer + height/layers, height);
            cylinder(height/layers, r, rn);
        }
    }
}

module ribs() {
    linear_extrude(height = height) {
        for (angle = [0: 360/ribs: 360]) {
            rotate(angle) {
                translate([-ribthickness/2, 0, 0]) {
                    square([ribthickness, radius + riblength * 2]);
                }
            }
        }
    }
}

module hole() {
    translate([0, 0, thickness]) {
        cylinder(height, radius-thickness, radius-thickness);
    }
}

function curve(radius, y, h) = radius - cos(360 * y / h) * curvyness;

echo(version=version());

```


[User]
I'm trying to design a vibration absorber for my 3D printer, similar to the one I found on Thingiverse, but I want to use glue sticks as the flexible element instead of springs. I'd like to be able to customize it in OpenSCAD. I have a good start, but I think the design could be significantly improved.

Essentially, it's a circular plate with holes around the edge to hold the glue sticks vertically. I'd like the design to be parametric, so I can adjust the following:

*   **Outer diameter of the plate:**  I need to set the overall size.
*   **Inner diameter of the plate (and screwhole):**  This will affect how it mounts and might need to be adjustable.
*   **Number of rods (glue sticks):**  I want to easily change how many glue sticks are used.
*   **Diameter of the rods:** This needs to be accurate for different glue stick sizes, including a tolerance.
*   **Tolerance for rod diameter:** I need a percentage adjustment to make the hole a bit bigger than the rod diameter.
*   **Height of the rod holder:** This is the depth of the hole holding the stick, impacting stability.
*   **Thickness of the holder wall:** I need to be able to adjust the wall thickness around the rod holes.
*   **Thickness of the plate:**  This will influence the overall rigidity.

I'd also like to make sure there are some secondary parameters handled by the code. Like making sure the thickness of the plate is limited by height of the rod holder plus the thickness of the material. Also, I need to ensure that the diameter of the plate is large enough to accommodate the rods.

Essentially I want to generate this design as a base, so I can adapt it later into some sort of housing or feet. It doesn't have to be perfect, just a flexible base design. I am hoping you can help me create this as a parametric OpenSCAD file. I'd prefer to keep it in a single file if possible.

Thanks!

[Assistant]
hotglue_vibrationabsorber2.scad:
```
//Primary Parameters
//Outer diameter plate
outerdiamplate=46;
//Inner diameter plate/screwhole (limited to calculated max)
innerdiamplate=4.5;
//Number of rods
numberrods = 5;
//Diameter rod
diameterrod = 7.2;
//Tolerance correction for diameter rod (% wider)
diamrodcorrperc = 8;
//Height or depth holder rods
heightrodholder = 7;
//Thickness wall holder
thickmaterialholder = 0.8;
//Thickness plate (limited to calculated max)
thickmaterialplate = 6;

//modules
module ring(diam, tw, transy, transz, hr)  //tm = thickness wall
{ translate([0,transy,transz])
    difference()
    { cylinder(r=diam/2,h=hr);
      translate([0,0,-1])
      cylinder(r=diam/2-tw,h=hr+2);
    }
}

//Secondary paramaters / limitations
diamrod2 = diameterrod+(diamrodcorrperc/100)*diameterrod;
tmatplate2 = min(thickmaterialplate,heightrodholder+thickmaterialholder);
diamplate2 = outerdiamplate; //correcting outerdiameter is a bad plan but you can  max((diamrod2+thickmaterialholder*2)*2 + innerdiamplate, outerdiamplate);
widthplate2 = max((diamplate2-innerdiamplate)/2, diamrod2+(2*thickmaterialholder));

//main
$fn=100;
union()
  {
  difference()   //the plate
    {
    ring(diamplate2, widthplate2,0,0,tmatplate2);
      for(i=[0:numberrods-1])
        rotate([0,0,(360/numberrods)*i])
           ring(diamrod2+0.5*thickmaterialholder,diamrod2,diamplate2/2-thickmaterialholder-diamrod2/2,thickmaterialholder,heightrodholder*2);
    }

  for(i=[0:numberrods-1])  //the rodholders
    rotate([0,0,(360/numberrods)*i])
      ring(diamrod2 + (2*thickmaterialholder),thickmaterialholder,diamplate2/2-thickmaterialholder-diamrod2/2,min(thickmaterialholder, thickmaterialplate),heightrodholder);
  }
```


[User]
I'm looking to design a parametric hose adapter for my pool, similar to the one I have already, but I'd like to be able to customize it more easily. The adapter is essentially two cylinders connected by a cone. One cylinder has a larger radius and is meant to connect to a larger hose, and the other has a smaller radius for the smaller hose. Both cylinders will also have rings on the outside to provide extra grip.

Specifically, I need to be able to control:

*   **`h1`**: The length of the first (larger radius) cylinder.
*   **`h2`**: The length of the second (smaller radius) cylinder.
*   **`cone_length`**: The length of the cone connecting the two cylinders.
*   **`r1`**: The radius of the first (larger) cylinder.
*   **`r2`**: The radius of the second (smaller) cylinder.
*   **`th`**: The wall thickness of the adapter.
*   **`teeth`**: The height of the rings around the cylinders (the "teeth").
*   **`wt`**: The width/thickness of the rings.
*   **`dt`**: The distance between the rings.

The adapter should have three rings on the outside of both the large and small cylinder sections. The rings on the large cylinder should start at a distance of `dt` from the base and be spaced by `dt`, while the rings on the small cylinder should have their last ring `dt` distance from the end of the cylinder. The ring placement on the small cylinder should be calculated from the top down based on the provided parameters, and the large cylinder rings should be placed from the bottom up to make it easier to parameterize.

Could you generate an OpenSCAD file that allows for this? I'm not using any specific libraries, so you shouldn't need to include them.

[Assistant]
Hose_adapter.scad:
```

// Length
h1=40; // [10:500]
h2=40; // [10:500]
// Length cone
cone_length=10; // [1:200]
//Radius
r1=19;
r2=16;
//wall thickness
th=3;
//teeth heigth
teeth=1.5; //[0.2:0.1:10]
//wide of the teeths
wt=5; //[0.2:0.1:10]
//distance of the teeths
dt=6; //[0.3:0.1:11]

/* [Hidden]*/

$fn=360;

difference(){
union(){
	translate([0,0,0])      cylinder(h=h1,r1=r1,r2=r1);
        translate([0,0,h1])	cylinder(h=cone_length,r1=r1,r2=r2);
	translate([0,0,h1+cone_length])	cylinder(h=h2,r1=r2,r2=r2);

//lower rings
	translate([0,0,dt]) cylinder(h=wt,r1=r1,r2=r1+teeth);
	translate([0,0,2*dt]) cylinder(h=wt,r1=r1,r2=r1+teeth);
	translate([0,0,3*dt]) cylinder(h=wt,r1=r1,r2=r1+teeth);
//upper rings
	translate([0,0,h1+cone_length+h2-wt-dt]) cylinder(h=wt,r1=r2+teeth,r2=r2);
	translate([0,0,h1+cone_length+h2-wt-2*dt]) cylinder(h=wt,r1=r2+teeth,r2=r2);
	translate([0,0,h1+cone_length+h2-wt-3*dt]) cylinder(h=wt,r1=r2+teeth,r2=r2);
}
	translate([0,0,0])      cylinder(h=h1,r1=r1-th,r2=r1-th);
        translate([0,0,h1])	cylinder(h=cone_length,r1=r1-th,r2=r2-th);
	translate([0,0,h1+cone_length])	cylinder(h=h2,r1=r2-th,r2=r2-th);

}

```


[User]
Hi, I'm looking to create a parametric adapter ring for orchid pots. I have some pots that are a bit too short for my outer planters, and I want to make something to raise them up securely. I've got a basic idea in mind, but I'd like your help designing it in OpenSCAD.

Basically, I need a ring with three main adjustable parameters: the outer diameter of the ring itself, the outer diameter of the plant pot that will sit inside it, and the total height of the ring. The ring should be hollow, so it's essentially two cylinders subtracted from each other to create the ring shape.

But, I also want to ensure the pot doesn't tip over, so I'd like to add some support structure on the top part of the ring. Think like a series of vertical ribs or fins evenly spaced around the top. These ribs should extend inwards, helping to hold the pot in place.

I would like to see an OpenSCAD file that has all of these variables and produces the design, and I'd also like to use the `rotate_extrude` functionality, so it'd be great if you could take that into account too. I'm not really particular about the libraries you use, as long as it produces an optimized result. Please let me know what you come up with.

[Assistant]
Adapter_DurchmesserHoehe_V2.scad:
```
//Adapter für hohe Orchideentöpfe
//height adjuster for orchid plant pots
//20180604 P. de Graaff

$fn=100;
Durchmesser=85;     //outer diameter of adjuster
DurchmesserTopf=80; //outer diameter plant pot
Hoehe=20;           //total height of adjuster
difference(){
    cylinder(d=Durchmesser,h=10);
    cylinder(d=DurchmesserTopf-20,h=Hoehe+1);
}
translate([0,0,10]) difference(){
    cylinder(d=DurchmesserTopf,h=Hoehe-10);
    cylinder(d=DurchmesserTopf-20,h=Hoehe+1);
    for (i =[0:8]){
        rotate([0,0,i*45])cube([50,10,50]);
    }
}
```


[User]
I'm looking to create some replacement feet for my Prusa i3 MK3 printer. The original rubber feet have a tendency to fall off, and they don't do a great job at spreading the weight, especially on my stainless steel table which seems to amplify vibrations.

I like the design of these PrusaFeet.scad files, but I want to make a few changes and have more flexibility in the design. I'd like to be able to control the overall length, the depth of the extrusion slot, the width of the top and bottom of the slot, and the thickness of the wall and support, and use it on printers with different extrusion profiles (e.g., 2020 or 4040).

Could you generate OpenSCAD files that would allow me to customize these parameters? I'd like to include the following features:

*   **Parametric Extrusion Profile:** The design should accommodate different extrusion profiles (e.g., 2020, 3030, 4040, and allow custom sizes). It should be possible to define the height and width of the extrusion slot. There should be parameters to define the upper and lower widths of the slot, and the depth of the slot.
*   **Wall and Support Thickness:** Parameters to control the wall thickness and the thickness of the support where it connects to the extrusion.
*   **Foot Length:** A parameter to set the overall length of the foot.
*   **Simple Cube Base:** I want an option to add a simple cube base to the foot for increased stability, this should also have customizable parameters for length, width and height.
*   **Flexibility:** The design should be optimized for flexible materials like TPU.
*   **Easy Insertion/Removal:**  The foot should be designed so it's easy to push into the extrusion, but doesn't come out easily.

I'm looking for a single OpenSCAD file, or a well-organized system of files, that can achieve this. Please use comments to explain your code, and ideally use a library that reduces the amount of code needed to create this type of thing (e.g. BOSL2).  I would like to be able to adjust everything from a single, master scad file. I'd also like to include a 20mm test cube to the side of the final foot, for calibration purposes. Thanks!

[Assistant]
PrusaFeet.scad:
```
// Feet for Prusa i3 MK3
// (c) 2018, Phil Dubach
//
// Creative Commons License
// Feet for Prusa i3 MK3 by Phil Dubach is licensed under a Creative
// Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
// Based on a work at https://github.com/phildubach/PrusaFeet.

// Length of the foot
LENGTH = 50;

module T3030_flex(height) {
    slit_uw = 8;
    slit_lw = 6;
    slit_d = 6;
    wall = 2.5;
    t_w = 10;
    t_h = 1.2;
    vertices = [[0,0], [slit_uw/2,0], [slit_uw/2, -wall], [t_w/2, -wall], [t_w/2, -(wall+t_h)], [slit_lw/2, -slit_d], [0, -slit_d], [0,0]];
    linear_extrude(height=height) {
        polygon(vertices);
        mirror([1,0,0]) polygon(vertices);
    }
}

T3030_flex(LENGTH);
translate([-15,0,0]) cube([30, 12, LENGTH]);

```


[User]
I need to design a replacement fan blade for small centrifugal fans, like the ones used in laptops and 3D printers. I've got an existing design in OpenSCAD that I like as a starting point, but I'd like to make it a bit more robust and flexible.

Here's the idea: The core of the fan consists of a central hub with blades radiating outwards. The hub needs to fit snugly onto the existing fan motor, and the blades should match the original fan's overall diameter and blade count as closely as possible for optimal performance.

Here's the basic functionality I need:

*   **Parametric Hub:** I need to be able to specify the inner diameter of the hub for a press-fit onto the motor shaft or existing fan hub stubs. I also need to define the thickness of the hub.
*   **Parametric Blades:** The blade count should be adjustable, and the blades should be a uniform thickness and length. I'd like to control the blade thickness and radial extent.
*   **Easy Assembly:** The design needs to be printable on common FDM printers and should assemble easily.
*   **Solid Model:** I need a complete, printable solid that can be used with the `linear_extrude` command to create a solid object for printing.
*   **Optimization Considerations:** For best results, the blades should be as thin as possible while still being rigid. My starting design uses 0.8mm blades, but I'm open to other configurations. I'd also prefer to be able to match the blade length, blade count, and overall outer diameter of the original fan as closely as possible.

I'd like the OpenSCAD code to use the BOSL library for any advanced geometrical operations. I'm not very familiar with BOSL myself, but I'd like to start learning.

Also, can you include an example of how to use this with the `render()` command in OpenSCAD to evaluate performance? This is helpful as a quick check to make sure the rendered view is exactly what I'm trying to generate.

[Assistant]
Parametric_Fan_Blade_Replacement.scad:
```
height = 10.5;
hubInnerDiameter = 25.0;
hubThickness = 1.2;
outerDiameter = 54.0;
bladeThickness = 0.8;
blades = 17;

fan();

module fan() {
    linear_extrude(height=height) union() {
        difference() {
            circle(hubInnerDiameter/2 + hubThickness, $fa=4);
            circle(hubInnerDiameter/2, $fa=4);
        }
        intersection() {
            for (s=[1:blades]) {
                rotate([0, 0, 360/blades * s]) translate([hubInnerDiameter/2 + hubThickness - bladeThickness, 0]) square([bladeThickness, outerDiameter], center=false);
            }
            circle(outerDiameter/2);
        }
    }
}
```


[User]
Hey, I'm looking for some help designing a 3D printable wall hook. I've got an existing hook that I need to replace, and I want to be able to reuse the existing holes in the wall. The thing is, I need it to be pretty strong since it'll be holding a heavy bag of used glass, so robustness is key. I'd also like to be able to customize it easily, specifically the distance between the mounting holes.

So, what I need is an OpenSCAD design that takes parameters for:

*   **Total Height:** The overall height of the hook.
*   **Width:** The width of the back plate of the hook.
*   **Depth:** How far the hook extends out from the wall.
*   **Hook Height:** The height at which the hook curves out.
*   **Number of Holes:** The number of mounting holes (I think two will usually be best).
*   **Hole Distance:** The vertical distance between the mounting holes.

I've seen some designs that let you control the backplate thickness; that'd be great too, if possible. It seems like a good idea to be able to dial in the strength. I also think it'd be helpful if the design includes chamfered mounting holes so the screw heads can sit flush.

Could you help me generate a parametric OpenSCAD file (or files) for this? I'd also like it to be set up for use with the Customizer, if you can.

[Assistant]
WandHaken.scad:
```
// -----------------------------------------------------
// WandHaken (Kueche/Altglasbeutel)
//
//  Detlev Ahlgrimm, 06.2018
// -----------------------------------------------------

$fn=100;

// total height
height_total=60;  // [40:100]

// width
width=20;         // [8:30]

// depth
depth=30;         // [15:1:50]

// height for center@hook
height_hook=20;   // [10:40]

// number of holes
holes=2;          // [1:1:2]

// distance between first and second hole
hole_dist=17;     // [8:0.1:30]

module V2() {
  difference() {
    hull() {   // die Rueckwand
      translate([0, 1.5, 0]) cylinder(d=3, h=width);
      translate([0, height_total-1.5, 0]) cylinder(d=3, h=width);
    }
    translate([-1.6, height_total-8, width/2]) rotate([0, 90, 0]) cylinder(d=4, h=3.2);  // Befestigungsloch
    translate([-0.5, height_total-8, width/2]) rotate([0, 90, 0]) cylinder(d1=4, d2=7, h=2.1); // Loch anphasen fuer Schraubenkopf

    if(holes>1) {
      translate([-1.6, height_total-8-hole_dist, width/2]) rotate([0, 90, 0]) cylinder(d=4, h=3.2);
      translate([-0.5, height_total-8-hole_dist, width/2]) rotate([0, 90, 0]) cylinder(d1=4, d2=7, h=2.1);
    }
  }
  difference() {
    hull() {    // der Ausleger mit Verdickung unten
      difference() {   // der Ausleger
        translate([depth/2, height_hook, 0]) scale([2, 1, 1]) cylinder(d=depth/2, h=width);
        translate([-depth/2, 0, -0.1]) cube([depth/2, height_total, width+0.2]);
      }
      cube([0.5, 10, width]);  // der Ansatz fuer die Verdickung unten
    }
    translate([(depth/2*1.6)/2, height_hook+5, -0.1]) scale([1.6, 1, 1]) cylinder(d=depth/2, h=width+0.2);  // Ausleger zum Haken machen
    translate([depth/2, height_hook+3, -0.1]) cube([depth, 10, width+0.2]);   // die Spitze vom Haken abflachen
  }
}
V2();

//%translate([depth, 0, 0]) cube([1, height_total, width]);

```


[User]
I need an OpenSCAD file to create a hose adapter, specifically for pool hoses. It needs to be parametric, so I can adjust it for different hose sizes. The basic shape will be two cylinders connected by a conical section, forming a sort of spool shape.

Here's a breakdown of what I need:

*   **Two Cylinders:** One cylinder will be for the smaller hose (let's call that r2 and h2) and the other will be for the larger hose (r1 and h1), connected by a cone.
*   **Cone Section:** The cone needs to smoothly transition between the two cylinder diameters. Its length should be adjustable as well. I'll call this length `cone_length`.
*   **Wall Thickness:** The entire adapter needs to have a consistent wall thickness which I would like to call `th`.
*   **Rings (Grips):** I want to add two rings around the outside of the adapter - one near the large end, and one near the small end, like grips. The rings should also be adjustable in radius (`ring`) and distance from the edge of the cylinder (`dt`)
*   **Parametric:** All the dimensions (cylinder lengths h1 and h2, cone length, radius, wall thickness, ring radius and placement) should be parameters I can easily adjust. The parameters should have sensible names like h1, h2, cone_length, r1, r2, th, ring, and dt and have reasonable limits, that is h1 and h2 can be between 10 and 500, cone_length from 1 to 200, th can't be less than 0, and ring can be 0.2 to 10, and dt can be from 0 to 250.

Essentially, I want to create an adapter that can fit different hose sizes, making sure it has good grip. I don’t need any fancy features, just the core geometry. I'd like all the code in one .scad file if possible.

[Assistant]
Hose_adapter_ring.scad:
```

// Length
h1=50; // [10:500]
h2=50; // [10:500]
// Length cone
cone_length=10; // [1:200]
//Radius
r1=19;
r2=16;
//wall thickness
th=3;
//ring radius
ring=1.5; //[0.2:0.1:10]

//distance of the ring from end
dt=30; //[0:1:250]

/* [Hidden]*/

$fn=360;

difference(){
union(){
	translate([0,0,0])      cylinder(h=h1,r1=r1,r2=r1);
        translate([0,0,h1])	cylinder(h=cone_length,r1=r1,r2=r2);
	translate([0,0,h1+cone_length])	cylinder(h=h2,r1=r2,r2=r2);

//lower rings
	translate([0,0,dt]) rotate_extrude(convexity = 10)
        translate([r1, 0, 0])
        circle(r = ring);

//upper rings
	translate([0,0,h1+cone_length+h2-dt]) rotate_extrude(convexity = 10)
        translate([r2, 0, 0])
        circle(r = ring);

}
	translate([0,0,0])      cylinder(h=h1,r1=r1-th,r2=r1-th);
        translate([0,0,h1])	cylinder(h=cone_length,r1=r1-th,r2=r2-th);
	translate([0,0,h1+cone_length])	cylinder(h=h2,r1=r2-th,r2=r2-th);

}

```


[User]
Hey, I'm looking to get a couple of parametric OpenSCAD files generated for some computer drive bay covers. I've got a couple of different sizes I need, and I want to be able to customize them easily.

The first file should generate a cover for a standard 5.25" drive bay, like a DVD drive. I need it to be a rectangular frame with a grille inside. The key dimensions I have for this one are a width of 42.5mm and a length of 149mm. I'd like the frame to be 5mm thick, and the grille bars to be 1.5mm thick. The bars should have a width of 0.6mm with 1.0mm gaps in between them. The frame itself should be 1.5mm wide, if that makes sense, and the whole cover is 5mm tall. There needs to be a couple of small, rectangular tabs that extend off of the frame that would act as pressure fit clips - I'm thinking they should be 7.5mm wide and 2mm high and should extend out 0.4mm each side. They should be centered on the width, and one should be at the front and one should be at the back, and should extend vertically to be part of the entire 5mm tall frame.

The second file should be very similar, but it's for a 3.5" floppy drive bay. For this one, the width should be 25.5mm, the length should be 103.5mm, and the tab width is 7.5mm. Everything else should be identical to the 5.25" version.

I'd like these to be as parametric as possible, so that I can easily adjust things like the overall dimensions, the grille bar width/spacing, frame thickness, and tab size later on. I don't expect to need anything outside of standard OpenSCAD commands for this; no need for extra libraries.

[Assistant]
ComputerDriveBayGrilleCover.scad:
```
/*
 * COMPUTER DRIVE BAY GRILLE COVER
 * by 5hwb
 * ALL MEASUREMENTS ARE IN MILLIMETRES.
 * 2017-08-17
 */

$fn=64; // resolution

// DVD DRIVE COVER DIMENSIONS:
// cover_width = 42.5
// cover_length = 149
// tab_width = 15.5

// FLOPPY DRIVE COVER DIMENSIONS:
// cover_width = 25.5
// cover_length = 103.5
// tab_width = 7.5

// Vertical width of frame
cover_width = 25.5;

// Horizontal length of frame
cover_length = 103.5;

// Height of frame
cover_height = 5;

// Thickness of perimeter and grille
cover_thickness = 1.5;

// Width of alignment tab
tab_width = 7.5;

// Height of alignment tab
tab_height = 2;

// Size of side tabs (adjust this value to finetune press fit into PC case)
press_fit_size = 0.4;

// Width of grille bar
bar_width = 0.6;

// Size of gap between grille bars
bar_gap = 1.0;

// Thickness of grille bars
grille_thickness = 1.5;

//difference() {
union() {
    // Perimeter
    difference() {
        hull() {
            // Main shape of frame
            cube([cover_width, cover_length, cover_height]);

            // Side tabs
            translate([cover_width/2-tab_width/2,-press_fit_size,0])
                cube([tab_width, cover_thickness+press_fit_size, cover_height]);
            translate([cover_width/2-tab_width/2,cover_length-cover_thickness,0])
                cube([tab_width, cover_thickness+press_fit_size, cover_height]);
        }
        translate([cover_thickness,cover_thickness,-cover_height/2])
            cube([cover_width-(cover_thickness*2), cover_length-(cover_thickness*2), cover_height*2]);
    }

    // Interlocking bar mesh
    bar_interval = bar_width + bar_gap;
    for (i = [1:bar_interval:cover_length-1]) {
        translate([0,i,0]) cube([cover_width, bar_width, grille_thickness]);
    }

    // Alignment tabs
    translate([cover_width/2-tab_width/2,0,0])
        cube([tab_width, cover_thickness, cover_height+tab_height]);
    translate([cover_width/2-tab_width/2,cover_length-cover_thickness,0])
        cube([tab_width, cover_thickness, cover_height+tab_height]);
}
//cube([cover_width + 5, cover_length/2, 10]);
//}

/* Thing to shave off any outlying parts
*difference() {
    translate([cover_width/2-cover_length*4, cover_width/2-cover_length*4, 0]) cube([cover_length*8, cover_length*8, cover_height*2]);
    translate([0,0,-cover_height]) cube([cover_width, cover_length, cover_height*4]);
}*/
```


[User]
Hi! I'm looking to design a modular pencil holder, and I'd like it to be customizable with OpenSCAD. I want to be able to adjust things like the individual pot dimensions, the overall grid layout, and whether the pots sit inside or outside of a base tray. Basically, I want to recreate something like this Thingiverse project: https://www.thingiverse.com/thing:2955759 but from scratch, and ideally with similar parameters.

Specifically, I envision individual cylindrical "pots" that are the basic unit. These should have adjustable inner width (`d`), wall thickness (`t`), height (`h`), and corner rounding radius (`r`). I'd also need to control how many of these pots are arranged horizontally (`nx`) and vertically (`ny`).

There should be an option for a base tray to hold the pots. The tray should have an adjustable height (`hb`) and a tolerance value (`tol`) to make sure the pots can be easily inserted and removed. It would be great if I could choose whether the pots sit inside or outside this tray. And, I'd like an option to select whether I want all the pots to be displayed or just one. I'll also need to control whether each pot and/or the base tray is exported.

Finally, I'd like to set a `$fn` value for controlling the smoothness of curves.

Can you create the necessary OpenSCAD files for this? I'd like to be able to customize the colors of each pot as well.

[Assistant]
cubilete_modular_v2_tv.scad:
```
/* Modular pencil holder by Jose Manuel Rute, 2018-06-07. Thingiverse: vimamsa  */

/* [Pot] */
// inner width
    d=40;
// wall thickness
    t=5;
// height
    h=70;
// corner rounding radius: 0 (squared)  <= r < d/2 (rounded)
    r=15;
/* [Tray] */
// number of horizontal modules
    nx=3;
// number of vertical modules
    ny=1;
// height
    hb=15;
// tolerance (clearance)
    tol=0.5;
/* [Display] */
// Number of pots to show
    num_cubiletes="all";//[one, all]
// Pot placement respect to the tray
    en_bandeja="inside";//[inside, outside]
/* [Export] */
// Pots
    exportar_cubiletes="Yes"; //[Yes,No]
// Bandeja
    exportar_bandeja="Yes"; //[Yes,No]
/* [Other] */
// $fn
    $fn=100;

// valores calculados
a= d+2*t; // ancho interno
rv=(r<d/2 ? r:d/2-0.01); // radio validado

if (exportar_cubiletes=="Yes") { colocar_cubiletes();}
if (exportar_bandeja=="Yes")
{
    color("Gray",0.7) {translate([-t,(en_bandeja =="inside" ? -t : -ny*a-3*t)]) bandeja(nx,ny,hb);}
}

// -------------------------------------------------------------------
module cubilete(x=d, y=d, h=h, r=rv)
{
    translate([r+t,r+t,0]) union()
    {
        linear_extrude(height=t) // base
        {
            offset(r=r+t) square([x-2*r,y-2*r], center=false);
        }

        linear_extrude(height=h) // tubo
        {
            difference()
            {
                offset(r=r+t) square([x-2*r,y-2*r], center=false);
                offset(r=r) square([x-2*r,y-2*r], center=false);
            }
        }
    }
}

module bandeja(nx=3,ny=1,h=hb)
{
    cubilete(nx*a+(nx+1)*tol,ny*a+(ny+1)*tol,h,rv+t);
}

module colocar_cubiletes()
{
    if (num_cubiletes=="all")
    {
        for (x=[0:nx-1])
        {
            for (y=[0:ny-1])
            {
                color(espar(x) ? (espar(y) ? "Gray":"Orange") : (espar(y) ? "Orange":"Gray")) {translate([x*a+(x+1)*(en_bandeja=="inside" ? tol:2*tol),y*a+(y+1)*(en_bandeja=="inside" ? tol:2*tol),(en_bandeja=="inside" ? t:0)]) cubilete();}
            }
        }
    }
    else
    {
        color("Orange") {translate([tol,tol,(en_bandeja=="inside" ? t:0)]) cubilete();}
    }
}

function espar(x)= x/2-floor(x/2)==0 ? true:false;

```


[User]
I'm looking to design some router guide bushings, and I need a parametric OpenSCAD file to do it. I want to be able to specify things like the router bit diameter, the safety distance between the bit and the bushing, the material thickness of the bushing itself, the router plate diameter and screw hole distances, and so on.

Specifically, the bushing will have two main parts. The main portion fits against the router plate and has a screw-hole pattern to allow mounting. Then there's a collar that sits on top, acting as the guide. I want to be able to adjust both the inner and outer diameters of both the main section and the collar. I need two bushings, one with the router guide diameter equal to the bit diameter + safety distance, and another with that same diameter + material. Both of these will be centered on the router plate, using an offset.

Here are the parameters I want to control:

*   `rdia`: Diameter of the router bit.
*   `distance`: Safety distance between the router bit and the bushing.
*   `material`: Material thickness of the bushing.
*   `routerplatediameter`: Diameter of the router plate.
*   `routerplatescrewdistance`: Distance between the screw holes on the router plate.
*   `routerplatethickness`: Thickness of the router plate.
*   `guidebushingheight`: Height of the guide bushing (the collar part).
*   `screwdiameter`: Diameter of the screw holes.
*  `screwheaddiameter`: Diameter of the screw heads.
*   `screwheadheight`: Height of the screw heads.

The first bushing's inner diameter should be `rdia + distance`. Its outer diameter should be `rdia + distance + material`. The second bushing should have an inner diameter of `rdia + distance` and an outer diameter of `rdia + distance + material`. The bushings will be placed at +/-  `0.51 * routerplatediameter`, respectively.

Could you generate an OpenSCAD file that uses all of these parameters? I’d also like a module named `Bushing` that takes inner and outer diameters as arguments. I don’t think I need to use any external libraries for this, but if it is easier for the creation of the code, please include them.

[Assistant]
SpecialGuidebushings.scad:
```
// Diameter of the router bit
rdia =8;
// Safety distance between router bit and bushing
distance = 3;
// Material thickness of the bushing
material = 4;

// Diameter of the plate of the router
routerplatediameter = 73.9;
// Distance of the screwholes
routerplatescrewdistance = 65;
// Thickness of the router plate
routerplatethickness = 2;
// Thickness of the guide bushing
guidebushingheight = 5;
// Diameter of the screwholes
screwdiameter = 4.5;
// Diameter of the screwheads
screwheaddiameter = 7.6;
// Height of the screwheads
screwheadheight = 1.2;

rradius = rdia / 2;
innerradius1 = rradius + distance;
outerradius1 = innerradius1 + material;
outerradius2 = rdia + distance + material;
innerradius2 = rdia + distance;

translate([0.51*routerplatediameter,0,0])
    Bushing(innerradius1*2, outerradius1*2);
translate([-0.51*routerplatediameter,0,0])
    Bushing(innerradius2*2, outerradius2*2);

module Bushing(inner, outer) {
    lift = routerplatethickness - screwheadheight;
    difference() {
        union() {
            cylinder(d=routerplatediameter, h=routerplatethickness);
            cylinder(d=outer, h=routerplatethickness+guidebushingheight);

        }
        cylinder(d=inner, h=routerplatethickness+guidebushingheight);

        translate([routerplatescrewdistance/2,0,0]) cylinder(d=screwdiameter, h=routerplatethickness);
        translate([-routerplatescrewdistance/2,0,0]) cylinder(d=screwdiameter, h=routerplatethickness);
        translate([routerplatescrewdistance/2,0,lift]) cylinder(d=screwheaddiameter, h=screwheadheight);
        translate([-routerplatescrewdistance/2,0,lift]) cylinder(d=screwheaddiameter, h=screwheadheight);
    }
}

```


[User]
I'd like to design a small village chapel for my model railroad, and I'm hoping you can help me generate the necessary OpenSCAD code. I'm aiming for a design inspired by a real chapel in Bubovice, Czech Republic, and I want to make it parametric so I can easily adjust the scale for different model railroad gauges like Z, N, TT, and H0.

Here are the key design elements and parameters I'm looking for:

**Overall Structure:**

*   The chapel should consist of a main building, a larger roof, a smaller roof on top of a belfry, a cross, and a gate.
*   I want to be able to view individual parts as well as the fully assembled chapel.
*   I would like the main building to have a rectangular base with a distinctive base and a small decorative element.

**Parameters:**

*   `model_scale`:  This will allow me to set the overall scale of the model. I plan to use 160 for N scale, 120 for TT, and 87 for H0, with 220 or smaller for Z scale.
*   `wall_thickness`:  The thickness of the walls.
*   `is_hollow`: A boolean to control whether the building is hollow or solid, which would affect printability.
*   `is_gate_included`: A boolean to include the gate as part of the building or keep it as a separate object.
*   `gate_thickness`:  The thickness of the gate.
*   `width`:  The width of the main building base.
*   `base_height`:  The height of the main building.
*   `gate_width`:  The width of the gate.
*  `gate_z_offset`:  The z-offset of the gate.
*   `gate_door_height`: The height of the gate door.
*   `side_window_width`, `side_window_height`: The dimensions of the side windows.
*   `cross_width`, `cross_height`, `cross_thickness`:  The dimensions of the cross.
*   `podezdivka_height`, `podezdivka_thickness`: The height and thickness of the decorative base element.
*   `deco_thickness`, `top_deco_height`, `vert_deco_width`: Dimensions of the decorative elements.
*   `big_under_roof_height`, `big_roof_width`, `big_roof_height`, `big_roof_top_width`, `big_roof_triangle_height`: Parameters for the larger roof, including its height, width, and triangle.
*  `belfry_bottom_height`, `belfry_bottom_thickness`, `belfry_width`, `belfry_height`, `belfry_ceil_width`, `belfry_ceil_height` : The dimensions of the belfry.
*   `belfry_window_width`, `belfry_window_height`, `belfry_window_z_offset`: The dimensions of the belfry windows and their offset.
*   `sr_1_width`, `sr_1_height`, `sr_2_width`, `sr_2_height`, `sr_sphere_d`: Parameters for the smaller roof on top of the belfry.

**Modules & Features:**

*   `base_building()`: This module should create the main structure of the chapel, including the base, walls, podezdivka, decorative features, and a basic cross. It should also have the functionality to be hollowed out and include side windows, plus a hole for a gate.
*   `building()`: This module should build the full chapel building, with gate inclusion controlled by `gate_included`.
*  `big_roof()`: This module should create the large roof with an overhang and a triangular front and include a belfry at the peak. The belfry should also include window cutouts.
*   `small_roof()`: This should create the smaller roof on top of the belfry.
*   `top_cross()`: This will create the cross on top of the small roof.
*   `gate()`: This should create a detailed gate, including the decorative elements.
*   `arranged()`: This module will combine all the parts and place them correctly, giving the complete chapel.

**Views:**

*   I want to be able to select what to view using the `view` parameter with the values "small_roof", "big_roof", "building", "cross", "gate", and "arranged".
*   The "arranged" view should put all the pieces together in the final position.

I'm hoping you can generate well-organized, parametric OpenSCAD code that implements all these design elements. Also, please ensure that the code is well-commented and easy to understand. Let me know if you have any questions!

[Assistant]
chapel.scad:
```
/*******************************************************************\
|         __  ____       _ ____        _ __                         |
|        /  |/  (_)___  (_) __ \____ _(_) /      ______ ___  __     |
|       / /|_/ / / __ \/ / /_/ / __ `/ / / | /| / / __ `/ / / /     |
|      / /  / / / / / / / _, _/ /_/ / / /| |/ |/ / /_/ / /_/ /      |
|     /_/  /_/_/_/ /_/_/_/ |_|\__,_/_/_/ |__/|__/\__,_/\__, /       |
|                                                     /____/        |
|*******************************************************************|
|                                                                   |
|     Small Chapel in Bubovice, Central Bohemia, Czech Rep.         |
|                                                                   |
|                      designed by Svenny                           |
|                                                                   |
|       source: https://www.thingiverse.com/thing:2950676           |
|                                                                   |
\*******************************************************************/

/* [VIEW] */
// rendering precission
$fn=140;
// what to show
view = "arranged"; // [small_roof, big_roof, building, cross, gate, arranged]
// scale
model_scale = 160; // Z=220, N=160, TT=120, H0=87
// absolute thickness of the walls
wall_thickness = 1.2;
// should it be hollow?  0 = false
is_hollow = 1; // [0, 1]
// should be the gate included to building?  0 = false
is_gate_included = 1; // [0, 1]
// absolute thickness of the gate
gate_thickness = 0.6;

// Customizer is ignoring booleans...
hollow = is_hollow != 0;
gate_included = is_gate_included != 0;

width = 3000 / model_scale;
base_height = 3700 / model_scale;

gate_width = 1000 / model_scale;
gate_z_offset = 100 / model_scale;
gate_door_height = 2000 / model_scale;

side_window_width = 700 / model_scale;
side_window_height = 1200 / model_scale;

cross_width = 230 / model_scale;
cross_height = 450 / model_scale;
cross_thickness = 75 / model_scale;

podezdivka_height = 650 / model_scale;
podezdivka_thickness = 40 / model_scale;

deco_thickness = 30 / model_scale;
top_deco_height = 300 / model_scale;
vert_deco_width = 450 / model_scale;

big_under_roof_height = 130 / model_scale;
big_roof_width = width + 300 / model_scale;
big_roof_height = 700 / model_scale;
big_roof_top_width = 1200 / model_scale;
big_roof_triangle_height = 500 / model_scale;

belfry_bottom_height = 230 / model_scale;
belfry_bottom_thickness = 150 / model_scale;
belfry_width = 1070 / model_scale;
belfry_height = 950 / model_scale;
belfry_ceil_width = 1250 / model_scale;
belfry_ceil_height = 160 / model_scale;

belfry_window_width = 260 / model_scale;
belfry_window_height = 650 / model_scale;
belfry_window_z_offset = 80 / model_scale;

// sr = small roof
sr_1_width = 1400 / model_scale;
sr_1_height = 250 / model_scale;
sr_2_width = 770 / model_scale;
sr_2_height = 820 / model_scale;
sr_sphere_d = 280 / model_scale;

module base_building() {
    difference() {
        union() {
            color("white")
            translate([0,0,(base_height-big_under_roof_height/2)/2])
            cube([width, width, base_height-big_under_roof_height/2], center=true);

            color("brown")
            translate([0,0,podezdivka_height/2])
            cube([width+2*podezdivka_thickness,
                  width+2*podezdivka_thickness,
                  podezdivka_height], center=true);

            color("gold")
            for(ix=[-1,1]) {
                x = ix*(width/2-(width-gate_width)/4);
                translate([x, width/2, base_height/2])
                cube([vert_deco_width,
                      2*deco_thickness,
                      base_height-2*big_under_roof_height], center=true);
            }

            color("gold")
            translate([0,width/2,
                       base_height-(big_under_roof_height+top_deco_height)/2])
            cube([width, 2*deco_thickness, top_deco_height],
                center=true);

            // cross
            color("brown")
            translate([0,width/2,0.8*base_height]) {
                cube([cross_thickness, cross_thickness, cross_height], center=true);
                translate([0,0,cross_height/2 - cross_width/2])
                cube([cross_width, cross_thickness, cross_thickness], center=true);
            }
        }
        if(hollow)
        difference() {
            translate([0,0,base_height/2+0.2])
            cube([width-2*wall_thickness,
                  width-2*wall_thickness, base_height], center=true);
            for(i=[-1,1])
                translate([i*(width/2-wall_thickness-gate_thickness/2),
                           0,
                           0.6*base_height-1.5])
                cube([gate_thickness, side_window_width+3, side_window_height+3],
                     center=true);
        }

        // side windows
        for(i=[-1,1])
            translate([i*width/2, 0, 0.6*base_height]) {
                rotate([0,90,0])
                cylinder(d=side_window_width, h=2*wall_thickness, center=true);
                translate([0,0,-(side_window_height-side_window_width/2)/2])
                cube([2*wall_thickness,
                      side_window_width,
                      side_window_height-side_window_width/2], center=true);
            }

        translate([0, width/2, gate_z_offset+gate_door_height/2])
        cube([gate_width, 2*wall_thickness, gate_door_height], center=true);

        translate([0, width/2, gate_z_offset+gate_door_height])
        rotate([90,0,0])
        cylinder(d=gate_width, h=2*wall_thickness, center=true);
    }
}

module building() {
    base_building();
    if(gate_included)
        color("SaddleBrown")
        translate([0, width/2-wall_thickness, gate_z_offset])
        rotate([90,0,180])
        gate();
}

module big_roof() {
    color("white")
    translate([0,0,-big_under_roof_height/2])
    cube([big_roof_width, big_roof_width, big_under_roof_height], center=true);

    difference() {
        union() {
            color("gray")
            hull() {
                cube([big_roof_width, big_roof_width, 0.001], center=true);
                translate([0,0,big_roof_height])
                cube([big_roof_top_width, big_roof_top_width, 0.001], center=true);
            }

            color("gray")
            hull() {
                translate([0,big_roof_width/4,0])
                cube([big_roof_width, big_roof_width/2, 0.001], center=true);
                translate([0,big_roof_width/4,big_roof_triangle_height])
                cube([0.001, big_roof_width/2, 0.001], center=true);
            }
        }

        // front triangle
        color("gold")
        translate([0, width/2, 0])
        rotate([-90,0,0])
        linear_extrude(width)
        offset(r=-big_under_roof_height)
        projection()
        rotate([90,0,0])
        hull() {
            translate([0,big_roof_width/4,-big_under_roof_height/2])
            cube([big_roof_width, big_roof_width/2, big_under_roof_height],
                 center=true);
            translate([0,big_roof_width/4,big_roof_triangle_height])
            cube([0.001, big_roof_width/2, 0.001], center=true);
        }
    }

    // belfry
    color("white")
    translate([0,0,big_roof_height+0.45*belfry_bottom_height])
    minkowski() {
        sphere(d=belfry_bottom_height, $fn=6);
        cube([belfry_width, belfry_width, 0.2], center=true);
    }

    translate([0,0,big_roof_height+0.9*belfry_bottom_height])
    difference() {  // belfry
        union() {
            color("white")
            translate([0,0,belfry_height/2])
            cube([belfry_width, belfry_width, belfry_height], center=true);

            color("gold")
            translate([0,0,belfry_height+belfry_ceil_height])
            hull() {
                translate([0,0,-belfry_ceil_height])
                cube([1.1*belfry_width,
                      1.1*belfry_width,
                      0.01], center=true);
                translate([0,0,0])
                cube([belfry_ceil_width,
                      belfry_ceil_width,
                      0.01], center=true);
            }
        }
        // belfry hollow
        if(hollow)
        cube([belfry_width-2*wall_thickness,
              belfry_width-2*wall_thickness,
              2.5*belfry_height], center=true);
        // belfry windows
        for(angle=[0,90]) {
            rotate(angle)
            hull() {
                translate([0,0,belfry_window_height-0.65*belfry_window_width])
                rotate([90,0,0])
                intersection() {
                    translate([belfry_window_width/2,0,0])
                    cylinder(r=belfry_window_width, h=2*belfry_width, center=true);
                    translate([-belfry_window_width/2,0,0])
                    cylinder(r=belfry_window_width, h=2*belfry_width, center=true);
                }

                translate([0,0,belfry_window_z_offset])
                cube([belfry_window_width, 2*belfry_width, 0.01], center=true);
            }
        }
    }
}

module small_roof() {
    color("gray") {
        hull() {
            translate([0,0,0])
            cube([sr_1_width, sr_1_width, 0.01], center=true);
            translate([0,0,sr_1_height])
            cube([sr_2_width, sr_2_width, 0.01], center=true);
        }
        hull() {
            translate([0,0,sr_1_height])
            cube([sr_2_width, sr_2_width, 0.01], center=true);
            translate([0,0,sr_1_height+sr_2_height])
            cube([0.1, 0.1, 0.01], center=true);
        }
        translate([0,0,sr_1_height+sr_2_height])
        difference() {
            sphere(d=sr_sphere_d);
            scale(1.25)
            translate([0,0,sr_sphere_d/2])
            cube([cross_thickness, cross_thickness, sr_sphere_d], center=true);
        }
    }
}

module top_cross() {
    color("brown")
    scale(1.2)
    translate([0, cross_height/2, 0]) {
        cube([cross_thickness, cross_height, cross_thickness], center=true);
        translate([0,cross_height/2 - cross_width/2,0])
        cube([cross_width, cross_thickness, cross_thickness], center=true);
    }
}

module _gate_shape() {
    translate([0, gate_door_height/2])
    square([gate_width, gate_door_height], center=true);
    translate([0, gate_door_height])
    circle(d=gate_width);
}

module gate() {
    gate_rim = gate_width/8;
    intersection() {
        translate([0,0,-gate_thickness])
        linear_extrude(gate_thickness)
        offset(r=1.5)
        _gate_shape();

        translate([-3*gate_width, 0, -2*wall_thickness])
        cube([6*gate_width, 4*gate_door_height, 4*wall_thickness]);
    }

    intersection() {
        linear_extrude(gate_thickness)
        _gate_shape();
        union() {
            translate([-gate_width, gate_door_height, 0])
            cube([2*gate_width, 0.15*gate_width, gate_thickness]);
            translate([0, gate_door_height, 0])
            difference() {
                cylinder(d=gate_width, h=gate_thickness);
                cylinder(d=0.8*gate_width, h=2*gate_thickness);
                translate([0, -2*gate_width, 0])
                cube(4*gate_width, center=true);
            }
            for(angle=[-60:30:60]) {
                translate([0, 1.04*gate_door_height, 0])
                rotate(angle)
                translate([0,gate_width/2,0])
                cube([0.1*gate_width, gate_width, 2*gate_thickness], center=true);
            }
            for(i=[0,1]) {
                mirror([i,0,0])
                translate([0.05,0,-0.01])
                difference() {
                    cube([gate_width/2-0.05, gate_door_height-0.1, gate_thickness]);
                    translate([gate_rim, gate_rim, 0.6*gate_thickness])
                    cube([gate_width/2-0.05-2*gate_rim,
                          gate_door_height/2-1.5*gate_rim,
                          2*gate_thickness]);
                    translate([gate_rim, gate_door_height/2+0.5*gate_rim, 0])
                    cube([gate_width/2-0.05-2*gate_rim,
                          gate_door_height/2-1.5*gate_rim,
                          2*gate_thickness]);
                }
            }
        }
    }
}

module arranged() {
    base_building();
    translate([0,0,base_height])
    big_roof();
    translate([0,0,base_height+big_roof_height+0.9*belfry_bottom_height+belfry_height+belfry_ceil_height])
    small_roof();
    translate([0,0,base_height+big_roof_height+0.9*belfry_bottom_height+belfry_height+belfry_ceil_height+sr_1_height+sr_2_height])
    rotate([90,0,0])
    top_cross();
    color("SaddleBrown")
    translate([0, width/2-wall_thickness, gate_z_offset])
    rotate([90,0,180])
    gate();
}

if(view == "building")
    building();
else if(view == "arranged")
    arranged();
else if(view == "big_roof")
    big_roof();
else if(view == "small_roof")
    small_roof();
else if(view == "cross")
    top_cross();
else if(view == "gate")
    gate();

```


[User]
Hey, I'm looking to design a series of parametric pipe connectors for use with PVC or similar pipe, and I'd like some help generating the OpenSCAD code for them. I have a good idea of what I want, but I'm not super comfortable with the rotation and translation logic, especially for the more complex pieces.

I'd like to start with a 6-way connector, similar to the one I've seen on Thingiverse (link: https://www.thingiverse.com/thing:2953108), but fully parametric. I want to be able to specify the inner diameter of the pipe, the wall thickness, the length of each port (from the center of the fitting to the end), and how deep the pipe inserts into the fitting, as well as the wall thickness of the recess within the fitting. I’m also hoping to have the ability to specify the fillet radius at the edge of each port.

The basic idea is that you have a central sphere, and then six cylindrical ports extending from it in each of the positive and negative X, Y, and Z axes. There should be a recess inside each port to receive the pipe, this recess being shorter than the port length. I want the exterior to look like a smooth union of the ports, so no sharp edges. This should match the linked design.

Could you generate an OpenSCAD file for this 6-way pipe connector, taking those parameters into account? I’m going to need to make several different connectors, so the use of parameters is critical. I'd prefer not to rely on any libraries if possible, but I know some things are easier with libraries. So, if it's simpler to use something like BOSL, or even MCAD, that's fine. I just want to keep things as simple as I can, to start.

[Assistant]
6_Way.scad:
```
////////////////////////////////////////////////////////
// Created by Paul Tibble - 11/5/18                   //
// https://www.thingiverse.com/Paul_Tibble/about      //
// Please consider tipping, if you find this useful.  //
////////////////////////////////////////////////////////

//use the outer diameter of pipe
inner_diameter = 20;
//
wall_thickness = 3;
//from center of fitting to end of port
length = 30;
//use the wall thickness of the pipe
recess_thickness = 2;
//how far the pipe enters into the fitting
recess_depth = 15;

//do not change these
$fn = 100*1;
inner_radius = inner_diameter/2;
outer_diameter = inner_diameter + (wall_thickness*2);
outer_radius = outer_diameter/2;
fillet_radius = wall_thickness/2;

module create_center_bore() {
    sphere(inner_radius+0.001);
}

module create_center(){
    sphere(outer_radius+0.001);
}
module create_center_recess_bore() {
    sphere((inner_radius-recess_thickness)+0.001);
}

module create_center_recess(){
    sphere(inner_radius+0.001);
}

module create_x_recess(){
    rotate([0,90,0])translate([0,0,(length-recess_depth)/2])cylinder(length-recess_depth,inner_radius+0.001,inner_radius+0.001,true);
}
module create_x_recess_bore(){
    rotate([0,90,0])translate([0,0,length/2])cylinder(length,(inner_radius-recess_thickness),(inner_radius-recess_thickness),true);
}
module create_x_bore(){
    rotate([0,90,0])translate([0,0,length])cylinder(length*2,inner_radius,inner_radius,true);
}
module create_x_outer(){
    rotate([0,90,0]){
        rotate_extrude(angle=360,convexity=10){
            square([outer_radius,length-fillet_radius]);
            translate([outer_radius-fillet_radius,length-fillet_radius,0])circle(fillet_radius);
            translate([0,length-fillet_radius,0])square([outer_radius-fillet_radius,fillet_radius]);
        }
    }
}

module create_mx_recess(){
    rotate([0,0,180])create_x_recess();
}
module create_mx_recess_bore(){
    rotate([0,0,180])create_x_recess_bore();
}
module create_mx_bore(){
    rotate([0,0,180])create_x_bore();
}
module create_mx_outer(){
    rotate([0,0,180])create_x_outer();
}

module create_y_recess(){
    rotate([0,0,90])create_x_recess();
}
module create_y_recess_bore(){
    rotate([0,0,90])create_x_recess_bore();
}
module create_y_bore(){
    rotate([0,0,90])create_x_bore();
}
module create_y_outer(){
    rotate([0,0,90])create_x_outer();
}

module create_my_recess(){
    rotate([0,0,-90])create_x_recess();
}
module create_my_recess_bore(){
    rotate([0,0,-90])create_x_recess_bore();
}
module create_my_bore(){
    rotate([0,0,-90])create_x_bore();
}
module create_my_outer(){
    rotate([0,0,-90])create_x_outer();
}

module create_z_recess(){
    rotate([0,-90,0])create_x_recess();
}
module create_z_recess_bore(){
    rotate([0,-90,0])create_x_recess_bore();
}
module create_z_bore(){
    rotate([0,-90,0])create_x_bore();
}
module create_z_outer(){
    rotate([0,-90,0])create_x_outer();
}

module create_mz_recess(){
    rotate([0,90,0])create_x_recess();
}
module create_mz_recess_bore(){
    rotate([0,90,0])create_x_recess_bore();
}
module create_mz_bore(){
    rotate([0,90,0])create_x_bore();
}
module create_mz_outer(){
    rotate([0,90,0])create_x_outer();
}
//difference(){
union(){
    difference(){
        union(){
            create_center();
            create_x_outer();
            create_mx_outer();
            create_y_outer();
            create_my_outer();
            create_z_outer();
            create_mz_outer();
        }
        create_center_bore();
        create_x_bore();
        create_mx_bore();
        create_y_bore();
        create_my_bore();
        create_z_bore();
        create_mz_bore();
    }

    difference(){
        union(){
            create_center_recess();
            create_x_recess();
            create_mx_recess();
            create_y_recess();
            create_my_recess();
            create_z_recess();
            create_mz_recess();
        }
        create_center_recess_bore();
        create_x_recess_bore();
        create_mx_recess_bore();
        create_y_recess_bore();
        create_my_recess_bore();
        create_z_recess_bore();
        create_mz_recess_bore();
    }
}
//translate([0,0,-100])cube([200,200,200],true);
//}
```


[User]
I'm looking to design a parametric battery dispenser, something like the one I saw on Thingiverse by user vimamsa. I want to be able to store and dispense either AA or AAA batteries, and have it be customizable for the total number of batteries and the number of columns.

Here are the specific features I'm hoping for:

*   **Battery Type:**  The design should be parametric to accept either AA or AAA batteries.
*   **Capacity:** I need to be able to specify the total number of batteries the dispenser should hold.
*   **Columns:** I need to control the number of columns of batteries.
*   **Wall Thickness:** I'd like to specify a wall thickness.
*   **Clearance:** I need a parameter for the tolerance or clearance between the batteries and the dispenser walls.
*   **Battery Visibility:**  I'd like the option to show the batteries within the design for visualization, but I don't want that as part of the actual 3D print model.
*   **Dispensing:** The dispenser should function with the bottom battery slightly protruding for easy extraction.
*   **Visual Access:** The front should have openings that allow me to easily see how many batteries remain.
*   **OpenSCAD:** I need this as an OpenSCAD design.

I'm thinking the design would consist of a base, a top, vertical ribs to separate the battery columns, and some sort of stop tab system to hold the batteries from falling out the front. Also a toboggan-like feature at the bottom to let a new battery slide down to the dispensing position as one is removed.

I'm hoping this can be a relatively simple design that is easy to customize. Can you help me create an OpenSCAD file for this? I don't need any extra libraries.

[Assistant]
dispensador_pilas_v2_tv.scad:
```
/* Parametric battery storage and dispenser by Jose Manuel Rute, 2018-06-09. Thingiverse: vimamsa  */

// Type of batteries
    tp="AAA"; //["AA", "AAA"]
// Total number of batteries
    np=40;
// Number of columns
    nc=5;
// Wall thickness
    t=2;
// Tolerance (clearance)
    tol=0.4;
// Show batteries
    sb="Yes"; //["Yes", "No"]
// $fn
    $fn=180;
// Battery size (diam, lenght)
    aaa=[10.5,44.5]; aa=[14.5,50.5];

// Valores calculados
p= tp=="AAA" ? aaa:aa; // tipo de pila
at=0.41*p.x+t; // ancho tope frontal
nr=ceil(np/nc); echo("No. of rows=", nr); // no. de filas
ancho = nc*p.x+(nc+1)*t+2*nc*tol;
alto=nr*p.x+2*t;
fondo=p.y+2*t+2*tol;
ac=(at-t)/2; //ancho chaflan
hab=1.5*p.x-ac; //alto abertura inferior

// Dispensador pilas
union()
{
    base();
    tapa();
    ribs();
    tope_ribs();
    tobogan();
}
if (sb=="Yes") {colocar_pilas();}

// -------------------------------------------------------------------
module ribs ()
{
    for(x=[0:p.x+t+2*tol:ancho])
        {
            translate([x,0,0]) cube([t,fondo,alto]);
        }
}

module tope_ribs ()
{
    for(x=[0:p.x+t+2*tol:ancho])
    {
        translate([x,t,hab+t])
        if (x>0 && x< ancho-t-1)
        {
            translate([-at/2+t/2,0,0]) rotate([90,0,0])
            stop_tab();
        }
        else if (x==0) // izq
        {
            translate([0,0,0]) rotate([90,0,0])
            stop_tab_izq();
        }
        else // dcho
         {
            translate([-at/2+t,0,0]) rotate([90,0,0])
            stop_tab_der();
        }
    }
}

module tapa()
{
    translate([0, fondo-t ,0]) cube([ancho,t,alto]);
}

module base()
{
    translate([0,0,0]) cube([ancho, fondo, t]);
}

module pila()
{
    translate([1.5*p.x+2*tol, fondo-tol-p.x-t, p.x/2]) rotate([90,0,0]) union(){color("DarkOrange")cylinder(d=p.x,h=p.y-1); color("Gray") translate([0,0,p.y-1]) cylinder(d=3.3,h=1);}
}

module colocar_pilas()
{
  for (x=[0:nc-1])
  {
    for (y=[0:nr-1])
    {
      if (nc*y+x+1 <= np)
      {translate([(x+1)*t+(2*x-1)*tol+(x-1)*p.x, y==0 ? 0:p.x, t+y*p.x]) pila();}
    }
  }
}

module tobogan ()
{
    translate([0, p.y-p.x+2*tol, p.x+2*t])rotate([0,90,0])linear_extrude(height=ancho) rotate(45)arc(p.x+t,t,90);
}

module stop_tab()
{
    ac=(at-t)/2;
    lc=ac/sin(45);
    ht=alto-hab-t;
    linear_extrude(height=t)
    {
        difference()
        {
            square([at,ht]);
            translate([0,-0.5*lc/sin(45)]) rotate(45)square(lc);
            translate([at,-0.5*lc/sin(45)]) rotate(45)square(lc);
            translate([0,ht-0.5*lc/sin(45)]) rotate(45)square(lc);
            translate([at,ht-0.5*lc/sin(45)]) rotate(45)square(lc);
        }
    }
}

module stop_tab_izq()
{
    lc=ac/sin(45);
    ht=alto-hab-t;
    linear_extrude(height=t)
    {
        difference()
        {
            square([at/2+1,ht]);
            translate([at/2+1,-0.5*lc/sin(45)]) rotate(45)square(lc);
            translate([at/2+1,ht-0.5*lc/sin(45)]) rotate(45)square(lc);
        }
    }
}

module stop_tab_der()
{
    translate([at/2,0]) mirror([1,0,0]) stop_tab_izq();
}

module arc(radius, thick, angle){
	intersection(){
		union(){
			rights = floor(angle/90);
			remain = angle-rights*90;
			if(angle > 90){
				for(i = [0:rights-1]){
					rotate(i*90-(rights-1)*90/2){
						polygon([[0, 0], [radius+thick, (radius+thick)*tan(90/2)], [radius+thick, -(radius+thick)*tan(90/2)]]);
					}
				}
				rotate(-(rights)*90/2)
					polygon([[0, 0], [radius+thick, 0], [radius+thick, -(radius+thick)*tan(remain/2)]]);
				rotate((rights)*90/2)
					polygon([[0, 0], [radius+thick, (radius+thick)*tan(remain/2)], [radius+thick, 0]]);
			}else{
				polygon([[0, 0], [radius+thick, (radius+thick)*tan(angle/2)], [radius+thick, -(radius+thick)*tan(angle/2)]]);
			}
		}
		difference(){
			circle(radius+thick);
			circle(radius);
		}
	}
}

```


[User]
I'm looking to design a parametric fin can for model rockets, and I'm hoping you can help me with the OpenSCAD code. I've seen a few different approaches, but I'd like something that allows me to adjust a good variety of parameters.

Specifically, I need the following features:

*   **Variable Fin Count:** I need to be able to easily change the number of fins, from maybe 1 up to 12.

*   **Multiple Body Tube Sizes:**  It needs to be parametric to handle several standard body tube diameters, including BT50 (24mm), BT60 (41.6mm) and the common sizes in between like 29mm and 38mm. The goal is to have the fin can be a snug slip fit onto the body tube.

*   **Fine Body Tube Adjustment:** I need a way to adjust the body tube diameter by a percentage so that I can dial in the perfect fit for different print tolerances.

*   **Fin Span Scaling:** I would like a parameter to adjust the span (height) of the fins, from something like 0.3x to 3x of a default value, in increments of 0.05.

*   **Fin Root Chord Scaling:** I'd also like to be able to scale the root chord (length) of the fins, using a similar scale factor and range of 0.3x to 3x, in 0.05 increments.

*   **Launch Lug Option:** I need a toggle to add a launch lug to one of the fins. This should scale automatically with the body tube size but I need to specify a default size for the lug itself. A 1/8" lug size for the 24mm tube would be great to start with.

*   **Mouse Ears:** It would be great if I could add 'mouse ear' supports that aid in printing adhesion, especially useful when printing the fin can inverted, located both internal and at the top of the tube. These should be optional.

*   **Fin Tip Rounding:** I'd also like an option to round the tips of the fins, however minor the effect may be.

*   **Smoothness Adjustment:** Finally, I need to be able to adjust the smoothness for both the main tube and the fillets. Lower numbers should produce faster renders.

For the base fin shape, I'm envisioning a trapezoidal design with tapered leading and trailing edges (a 'double wedge' airfoil). The root thickness should also be a parameter, perhaps starting with 4mm. The fins should be fully filleted.  I want to avoid using polygons if at all possible.

I don't need the code to use any libraries, though if you think that would really make things easier, let me know. I would like the code to be well commented, please.

Could you please generate the necessary OpenSCAD files for this?

[Assistant]
FinCanTrapV2.scad:
```
/*
======================= FinCanTrapV2 OpenSCAD Customizer ===================================
This file has been adjusted to enable use of the OpenSCAD 'Customizer', which allows the
use of Windows-style selection tools to set parameters of the component.  The use of this
feature requires the following steps:

1.  You must be using the OpenScad 'Development Snapshot' version, available at:
    http://www.openscad.org/downloads.html
    Scroll down to Development Snapshots,  use version OperSCAD 2018.09.05 or later.

2.  Open this file with OpenSCAD.

3.  In the OpenSCAD [Edit] menu, select [Preferences] then open tab [Features], check
    [Customizer], then close the window when the check is shown.

4.  In the OpenSCAD [View] menu, uncheck the option [Hide Customizer].  The Customizer
    window should open at the right side of the screen.

5.  At the top of the Customizer window, check 'Automatic Preview' and select 'Show Details'
    in the dropdown box.

6.  If you are comfortable with the descriptions of the variables (detailed below), then also
    in the [View] menu, you can check the option [Hide editor], which will allow the full screen
    to view the model.  You can also check to [Hide Console].

=============== Using the FinCanTrap1.scad file with the customizer ========================

With the above steps completed, the customizer window should be visible at the right side
of the OpenSCAD window, with the following controls available.

> Use the dropdown box to select the 'Number of Fins', between 1 and 12.

> Use the dropdown box to select the 'Body Tube', between BT50 and BT60.

> Use the slider or spinbox to select a percentage for 'Fine Body Tube Adjust'.  Run short
  test prints to check fit and adjust as required here.

> Use the slider or spinbox to select the 'Fin Span Scaling', in increments of 0.05, between
  0.3 and 3.0.

> Use the slider or spinbox to select the 'Fin Root Chord Scaling', in increments of 0.05, between
  0.3 and 3.0.

> Use the checkboxes to select presence of a Launch Lug, Mouse Ears, or Rounding of the Fin
  Tips.  Note that the Launch Lug is 1/8" for a BT50, and probably does not scale to a usable
  size on other body diameters.  Mouse Ears can be an aid for printing adhesion; turn off if
  you use brims or something else in your slicer.  Fin Tip Rounding is barely noticeable.

> Use the 'Smoothness' sliders to adjust the smoothness of the tube and fillets. Lower numbers
  will require less rendering time.
*/

/*===============================================================================================
                       FIN CAN - 24, 29, 38(?)mm BODY - TRAPEZOIDAL FINS
	                             Gary A. CroweLaunch Lug Sr.  (VCP)

* Produces a Fin Can that is a slip fit over a 24mm (BT50) body tube.  It is not parametric
	for body diameter.
* Tapered root to tip.  The root thickness is presently set at 4mm and it also is not parametric.
* Tapered leading and trailing edges, 'double wedge' airfoil.  The chord taper points are not
	adjustable.
* Adjustable fin span.  There are practical limits of course.
* Fins are fully filleted; not adjustable.
* Launch lug embedded and fill in one fin root; set for 1/8" Launch Lug.  Size is not adjustable,
	but the Launch Lug can be eliminated by a setting.
* Includes mouse ears to facilitate printing.  The ears are placed at the forward end, as the
	suggested way to print is with the can inverted.  They are also placed inside the tube, so
	that when they are cut off, the outer surface of the tube isn't marred.  These can be turned
	off by a setting.
* The body leading edge and trailing edge are tapered (boat-tail) but the effect is slight.
* All dimensions are in mm.
================================================================================================*/

// practical adjustable parameters

/* [Fin_Can_Parameters] */

Number_of_Fins = 3; // [1,2,3,4,5,6,7,8,9,10,11,12]

//Select Body Tube Size
Body_Tube=1.0; // [1.0:BT50>>>>>>OD>24.0mm>>0.976in, 1.205:29mm>>>>>>OD>29.9mm>>1.176in, 1.240:29mmTW>>>>OD>30.7mm>>1.210in, 1.307:29mmBlue>>OD>32.4mm>>1.276in, 1.281:29mmG12>>>OD>31.8mm>>1.250in, 1.358:BT55>>>>>>OD>33.7mm>>1.325in, 1.675:38mmLOC>>>OD>41.5mm>>1.635in, 1.656:38mmBlue>>OD>41.0mm>>1.616in, 1.639:38mmG12TW>OD>40.6mm>>1.600in, 1.685:38mmG12FW>OD>41.8mm>>1.645in, 1.634:40mm>>>>>>OD>40.5mm>>1.595in, 1.677:BT60>>>>>>OD>41.6mm>>1.637in]

//Fine Adjustment for Body Tube Diameter %
Fine_Body_Tibe_Adjust_Pct =100; // [95:0.1:105]

//Use slider or box to adjust fin span:
Fin_Span_Scaling =1.0; // [0.3:0.05:3]

//Uselider or box t so adjust fin root/body length:
Fin_Root_Chord_Scaling =1.0; // [0.3:0.05:3]

// Check to include launch lug (1/8" on 24mm tube)
Launch_Lug = false;				// set true or false to include launch lug.
// Check to include Mouse Ears printing aid
Mouse_Ears = true;		// set true or false to include printing mouse ears.
// Check to round the fin tips
Fin_Tip_Rounding = false;	// set true or false to include rounding on the fin tips.  (not much there to round)

// Adjust smoothness of tube, lower for faster rendering
Body_Smoothness =60; // [15:15:150]

// Adjust smoothness of fillets, lower for faster rendering
Fillet_Smoothness =60; // [15:15:150]

//1.000:BT50>>>>>>OD>24.0mm>>0.976in
//1.205:29mm>>>>>>OD>29.9mm>>1.176in
//1.240:29mmTW>>>>OD>30.7mm>>1.210in
//1.307:29mmBlue>>OD>32.4mm>>1.276in
//1.281:29mmG12>>>OD>31.8mm>>1.250in
//1.358:BT55>>>>>>OD>33.7mm>>1.325in
//1.675:38mmLOC>>>OD>41.5mm>>1.635in
//1.656:38mmBlue>>OD>41.0mm>>1.616in
//1.639:38mmG12TW>OD>40.6mm>>1.600in
//1.685:38mmG12FW>OD>41.8mm>>1.645in
//1.634:40mm>>>>>>OD>40.5mm>>1.595in
//1.677:BT60>>>>>>OD>41.6mm>>1.637in

/* [Hidden] */
// parameters that will probably mess things up if you adjust them
finrootthick = 4;		// not parametric
finsspan = 40;			// do not adjust.  Use the Fin_Span_Scaling below to change span.
finheight = 100;

ID = 25.4; 				// inner diameter, slip fit over BT50.  Not parametric

LLdia = (1/8+0.030)*25.4;  // launch lug diameter is not adjustable - changing it will mess up the filleting.
LLwall = 1.5;
//===============================================================================================

scale (v = [Body_Tube*Fine_Body_Tibe_Adjust_Pct/100, Body_Tube*Fine_Body_Tibe_Adjust_Pct/100, Fin_Root_Chord_Scaling])  {  // use to scale the length
difference() {
	union () {

		// this is a really dumb way to create the basic fin shape - I'll have a much better method next time.
		for (j = [0 : 360/Number_of_Fins : 360-360/Number_of_Fins]) {
			rotate (a = [0, 0, j]) translate ([0, -0.5, 0]) translate ([0, 13.8, 0]) scale (v = [1, Fin_Span_Scaling, 1])
				// this would surely work out better as a polygon
				difference () {  // basic fin block - cubes are subtracted for tapers
					translate ([0, finsspan/2, finheight/2-5])
						cube (size = [finrootthick, finsspan, finheight], center = true);

					// LE sweep
					translate ([0, finsspan, finheight+10]) rotate (a = [35.5, 0, 0])
						cube (size = [finrootthick*2, finsspan*2, finheight*2], center = true);
					// TE sweep
					translate ([0, finsspan, -24.5]) rotate (a = [-65, 0, 0])
						cube (size = [finrootthick*2, finsspan*2, finheight*2], center = true);

					// spanwise taper
					translate ([finrootthick-0.65, finsspan/2, finheight/2]) rotate (a = [0, 0, 2.6])
						cube (size = [finrootthick, 1.2*finsspan, 1.2*finheight], center = true);
					translate ([-finrootthick+0.65, finsspan/2, finheight/2]) rotate (a = [0, 0, -2.6])
						cube (size = [finrootthick, 1.2*finsspan, 1.2*finheight], center = true);

					// LE taper
					translate ([finrootthick-2.4, finsspan/2, finheight/2+17]) rotate (a = [0, -6, 8.6])
						cube (size = [finrootthick, 1.2*finsspan, 1.2*finheight], center = true);
					translate ([-finrootthick+2.4, finsspan/2, finheight/2+17]) rotate (a = [0, 6, -8.6])
						cube (size = [finrootthick, 1.2*finsspan, 1.2*finheight], center = true);

					// TE taper
					translate ([finrootthick-4, finsspan/2, finheight/2-60]) rotate (a = [0, 6, 3.0])
						cube (size = [finrootthick, 1.2*finsspan, 1.2*finheight], center = true);
					translate ([-finrootthick+4, finsspan/2, finheight/2-60]) rotate (a = [0, -6, -3.0])
						cube (size = [finrootthick, 1.2*finsspan, 1.2*finheight], center = true);

				}
			difference () {
				//rotate (a = [0, 0, j]) translate ([0, 30, finheight/4-6])
					//cube (size = [2, finsspan, finheight/2], center = true);
				//rotate (a = [30, 0, j]) translate ([0, 30, finheight/4-8])
					//cube (size = [4, 2*finsspan, finheight/2], center = true);
			}
			//rotate (a = [0, 0, j]) translate ([0, 30-1, finheight/4-10])
				//cube (size = [.6, finsspan-.25, finheight/2-15], center = true);

			//rotate (a = [0, 0, j]) translate ([0, 40, -6+.2]) cylinder (h=.4, r= 5, center = true, $fn=12);
			//rotate (a = [0, 0, j]) translate ([0, 20, -6+.2]) cylinder (h=.4, r= 5, center = true, $fn=12);

		}

		// basic tube
		cylinder (h = finheight-14, d = 27, $fn=Body_Smoothness);

		difference () {  // leading tube tapers
			// forward taper
			translate ([0, 0, finheight-10-4]) scale (v = [1, 1, 1.8]) sphere (d = 27, $fn = Body_Smoothness);
			// trim off the top
			translate ([0, 0, finheight-10+50+10-8]) cube (size = [100, 100, 100], center = true);
		} // difference
		difference () {  // trailing tube tapers
			// boattail
			translate ([0, 0, 0]) scale (v = [1, 1, 1.3]) sphere (d = 27, $fn = Body_Smoothness);
			// trim off the bottom
			translate ([0, 0, -4-50]) cube (size = [100, 100, 100], center = true);
		} // difference

		for (j = [0 : 360/Number_of_Fins : 360-360/Number_of_Fins]) {
			 rotate (a = [0, 0, j]) translate ([0, -0.5, 0]){

				//  fin tip rounding
				if (Fin_Tip_Rounding == true) {
					difference () {
						union () {
							translate ([0, 39.995*Fin_Span_Scaling+13.8, 23.3]) cylinder (h = 7, d = .88, $fn = Fillet_Smoothness);  // tip rounding
							translate ([0, 39.995*Fin_Span_Scaling+13.8, 23.3+7]) cylinder (h = 4.15, d1 = .88, d2 = 0, $fn = Fillet_Smoothness);
							translate ([0, 39.995*Fin_Span_Scaling+13.8, 19.09]) cylinder (h = 4.21, d1 = 0, d2 = .88, $fn = Fillet_Smoothness);
						} // union
						translate ([0, (finsspan*Fin_Span_Scaling+13.8), -24.5]) rotate (a = [-65, 0, 0])
							cube (size = [finrootthick*2, finsspan*2, finheight*2], center = true);
						translate ([0, (finsspan*Fin_Span_Scaling+13.8), finheight+3.2]) rotate (a = [35.5, 0, 0])
							cube (size = [finrootthick*2, finsspan*2, finheight*2], center = true);
					} // difference
				} //  if fin tip rounding

				// fin fillets
				translate ([0, -0.2, 0]) difference() {
					union () {
						difference() {
							translate ([-5.5, 12, 20.2]) cube (size = [5.5, 6, 57.2]);
							translate ([-2, 15, 65]) cube (size = [10, 10, 20]);
						}
						hull () {
							translate ([-6.5, 16.999, 67]) sphere (d = 9, $fn = Fillet_Smoothness);
							translate ([-.0, 14.1, 90.8])  sphere (r = .2, $fn = Fillet_Smoothness);
						} // hull
						hull () {
							translate ([-6.5, 16.999, 20.4]) sphere (d = 9, $fn = Fillet_Smoothness);
							translate ([0, 14.1, 0]) sphere (r = .2, $fn = Fillet_Smoothness);
						} // hull

					} // union
					translate ([-7.5, 17.999, 10]) cylinder (h = 92.1, d = 11, $fn = Fillet_Smoothness);
					hull () {
						translate ([-7.46, 17.999, 69]) sphere (d = 11, $fn = Fillet_Smoothness);
						translate ([-.12, 14.1, 93.5]) sphere (r = .4, $fn = Fillet_Smoothness);
					} // hull
					hull () {
						translate ([-7.46, 17.999, 18.7]) sphere (d = 11, $fn = Fillet_Smoothness);
						translate ([-.33, 14.05, -1]) sphere (r = .4, $fn = Fillet_Smoothness);
					} // hull
					translate ([0, 0, -5]) cube (size = [100, 100, 100]);   //  trim other side of fin
					translate ([-18.7, 10, 65]) rotate (a = [0, 5, -30]) cube (size = [10, 10, 10]);  // trim some fiddly bits leading edge
					translate ([-4.1, 18.6, 66.]) rotate (a = [0, 10, -30]) cube (size = [2, 2, 2]);  // trim some fiddly bits leading edge
					translate ([-18.1, 10, 15]) rotate (a = [0, -5, -30]) cube (size = [10, 10, 10]);  // trim some fiddly bits trailing edge
				} // difference

				mirror ([1, 0, 0]) translate ([0, -0.2, 0]) difference() {
					union () {
						translate ([-5.5, 12, 20.2]) cube (size = [5.5, 6, 47.2]);
						hull () {
							translate ([-6.5, 16.999, 67]) sphere (d = 9, $fn = Fillet_Smoothness);
							translate ([-.0, 14.1, 90.8])  sphere (r = .2, $fn = Fillet_Smoothness);
						} // hull
						hull () {
							translate ([-6.5, 16.999, 20.4]) sphere (d = 9, $fn = Fillet_Smoothness);
							translate ([0, 14.1, 0]) sphere (r = .2, $fn = Fillet_Smoothness);
						} // hull

					} // union
					translate ([-7.5, 17.999, 10]) cylinder (h = 92.1, d = 11, $fn = Fillet_Smoothness);
					hull () {
						translate ([-7.46, 17.999, 69]) sphere (d = 11, $fn = Fillet_Smoothness);
						translate ([-.12, 14.1, 93.5]) sphere (r = .4, $fn = Fillet_Smoothness);
					} // hull
					hull () {
						translate ([-7.46, 17.999, 18.7]) sphere (d = 11, $fn = Fillet_Smoothness);
						translate ([-.33, 14.05, -1]) sphere (r = .4, $fn = Fillet_Smoothness);
					} // hull
					translate ([0, 0, -5]) cube (size = [100, 100, 100]);   //  trim other side of fin
					translate ([-18.7, 10, 65]) rotate (a = [0, 5, -30]) cube (size = [10, 10, 10]);  // trim some fiddly bits leading edge
					translate ([-4.1, 18.6, 66.]) rotate (a = [0, 10, -30]) cube (size = [2, 2, 2]);  // trim some fiddly bits leading edge
					translate ([-18.1, 10, 15]) rotate (a = [0, -5, -30]) cube (size = [10, 10, 10]);  // trim some fiddly bits trailing edge
				} // difference

			} // rotate

		} // for Number_of_Fins

	} // union

	translate ([0, 0, -10]) cylinder (h = finheight+20, d = ID, $fn=120);  // clean up the inside  <-- determines slip fit
	if (Launch_Lug == true) {
		rotate (a = [0, 0, 90]) translate ([15.1, 3.4, 20])
			translate ([0, 0, -10]) cylinder (h = 82, d = LLdia, $fn = 60);  // launch rod
	}

} // difference

// add mouse ears
if (Mouse_Ears == true) {
	difference() {
		intersection () {
		for (mouserot  = [ 0: 60 :300 ]) {
			rotate (a = [0, 0, mouserot]) translate ([0, 10, 92-0.6]) cylinder (h = .6, d = 7, $fn = 30); }
			translate ([0, 0, 90]) cylinder (h = 20, r = 13, $fn = 60);
		}
		difference() {
			translate ([0, 0, 92-0.2]) cylinder (h = 1, d = 25.4, $fn = 60);
			translate ([0, 0, 91]) cylinder (h = 3, d = 24.8, $fn = 60);

		}
	}
} // if Mouse_Ears

// launch lug
if (Launch_Lug == true) {
	rotate (a = [0, 0, 90]) difference() {
		translate ([15.1, 3.4, 15]) {
			difference() {
				cylinder (h = 50, d = LLdia + LLwall, $fn = Fillet_Smoothness);
				translate ([0, 0, -1]) cylinder (h = 52, d = LLdia, $fn = Fillet_Smoothness);
			}
			difference() {
				translate ([2.8, -1.3, 25]) cube (size = [4, 4, 65], center = true);
				translate ([5.5, 1, 15]) cylinder (h = 80, d = 6, center = true, $fn = Fillet_Smoothness);
				translate ([0, 0, -16]) cylinder (h = 82, d = LLdia, $fn = Fillet_Smoothness);
			}
			difference() {
				translate ([-2.5, 1.8, 15]) rotate (a = [0, 0, 55]) cube (size = [4, 4, 89], center = true);
				translate ([-1.22, 5.44, 14]) cylinder (h = 80, d = 6, center = true, $fn = Fillet_Smoothness);
				//translate ([0, 0, -10]) #cylinder (h = finheight+20, d=25.4, $fn=120);
				translate ([0, 0, -16]) cylinder (h = 82, d = LLdia, $fn = Fillet_Smoothness);
			}
		} // translate
		translate ([10, 0, -14.7]) rotate (a = [0, 0, -45]) rotate (a = [-18, 0, 0]) cube (size = [20, 10, 100], center = true);
		translate ([10, 0, -24.7]) rotate (a = [0, 0, -45]) rotate (a = [-18, 0, 0]) cube (size = [20, 10, 100], center = true);
		translate ([14, 2, 94]) rotate (a = [0, 0, -45]) rotate (a = [15, 0, 0]) cube (size = [20, 10, 100], center = true);
		translate ([0, 0, -10]) cylinder (h = finheight+20, d = ID, $fn=120);  // clean up the inside  <-- determines slip fit
	} // rotate
} // if LL

} // scale rootscale

```