[User]
I'm looking to design a customizable model of a light-up eyeball, similar to the Monoculight project I saw on Thingiverse. I want to be able to adjust the size of the eye, lens parameters, and the number of LEDs. I'd also like to include an option for a battery holder and a switch hole.

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

**General Geometry:**

*   `shell_th`: Sclera (eyeball shell) sidewall thickness. I want to specify this as a value in millimeters.
*   `bfl`: Back focal length of the lens, also in millimeters.
*   `lens_diam`: The physical diameter of the lens in millimeters.
*   `refractive_index`:  The refractive index of the lens material.

**Electrical Components:**

*   `num_leds`: Number of LEDs to use in the design.
*   `led_hole_diam`: Clearance hole diameter for each LED in millimeters.
*   `make_batt_holder`: A toggle to include or exclude a battery holder.
*   `n_batts`: If `make_batt_holder` is enabled, this is the number of CR2032 batteries the holder should accommodate.
*   `make_switch_hole`: A toggle to include or exclude a switch hole.
*   `switch_hole_diam`: Clearance hole diameter for the switch in millimeters, if `make_switch_hole` is enabled.

**Build Plate:**
* `show_build_plate`: A toggle to show or hide a build plate reference for visual purposes.
* `build_plate_selector`:  Predefined sizes for "Replicator 2", "Replicator", "Thingomatic", or a "Manual" option.
* `build_plate_manual_x`: x dimension for the manual build plate (mm)
* `build_plate_manual_y`: y dimension for the manual build plate (mm)

**Internal Geometry:**

*   `fit_clearance`: Clearance to add to pockets to ensure parts fit, specified in millimeters.
*    `lens_ridge`:  The width of the lens support ring in mm.
*   `iris_proud`: How far above the lens pocket the iris should extend in mm.
*   `iris_oversize`:  How much to oversize the iris around the lens pocket in mm.
*   `iris_slope`: The slope angle of the iris cone in degrees.
*    `retain_proud`: How much the retina retainer ring should protrude from the shell (mm).
*    `retina_ring_proud`: How much the retina retainer ring should protrude from the mating surface of the shell (mm).
*    `coupling_ht`: How far the coupling ring protrudes from the hemisphere (mm)
*    `coupling_th`: The thickness of the coupling ring (mm).

I'd like the design to include the following main parts, which should be selectable individually for generation, or generate all together:

*   **Front Half:** The main body of the eyeball with the lens pocket, iris, LED holes, battery holder (optional), and switch hole (optional).
*   **Back Half:** The back half of the eyeball with the retina pocket.
*   **Retina Retainer:** A ring that snaps into the back half.
*   **Lens Mold:** A mold to create the lens.
*    **Lens Cutter:** A cutter to form the lens clear aperture.
*    **Mold Pestle:** A pestle to press the lens material into the mold.
*   **Mock Lens:** A simplified model of the lens for testing and visualization.
* **Ice Mold:** A mold that can be filled with water and frozen, for creating melt-away lens molds.

Could you create an OpenSCAD design that incorporates these features? I would like all code written from scratch and would like to use only the utils/build_plate.scad for build plate functionality, and no other libraries. I'm assuming any libraries should be locally available for include, but _do_ specify if you are using additional libraries.

[Assistant]
Customizable_Monoculight.scad:
```
// Copyright 2015 Arthur Davis (thingiverse.com/artdavis)
// This file is licensed under a Creative Commons Attribution 4.0
// International License.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

// Monoculight
// This is my entry for the Thingiversity Technology S.T.E.A.M. Challenge:
// LightItUp. The assembled part is a functional light-up eyeball demonstrator
// to encourage kids of all ages to think about how basic lens technology works
// and how the marvelous biological optical systems in our heads (aka our eyes)
// enable us to see.

// Units are in mm

// Optimize view for Makerbot Customizer:
// preview[view:"south west", tile:"top"]

/* [Global] */
// Choose geometry to preview:
part = "All"; // [Front_Half, Back_Half, Retina_Retainer, Lens_Mold, Lens_Cutter, Mold_Pestle, Mock_Lens, Ice_Mold, All]

/* [Eye Specs] */
// Sclera sidewall thickness (thinner will be more difficult to print):
shell_th = 2.0; // [0.8:0.2:4.0]
// Back Focal Length:
bfl = 64.0; // [40.0:1.0:80.0]
// The physical diameter of the lens:
lens_diam = 28.0; // [10.0:1.0:60]
// Lens Index of Refraction (for mold design):
refractive_index = 1.41; //[1.3:0.01:1.6]

/* [Electrical] */

// Number of LEDs to use:
num_leds = 6; // [0:1:12]
// Clearance hole diameter for each LED:
led_hole_diam = 5.2; // [4.0:0.1:6.0]
// Include battery holder?
make_batt_holder = "Yes"; // [Yes, No]
// Number CR2032 batteries in the holder
n_batts = 4; // [1:1:10]
// Include hole for mounting a switch
make_switch_hole = "Yes"; // [Yes, No]
// Clearance hole diameter for switch mount
switch_hole_diam = 7.0; // [4:1:12]

/* [Build Plate] */
use <utils/build_plate.scad>;
// Show build plate?
show_build_plate = "Yes"; // [Yes, No]
// For display only, doesn't contribute to final object
build_plate_selector = 3; //[0:Replicator 2,1: Replicator,2:Thingomatic,3:Manual]
//For "Manual" option: Build plate x dimension
build_plate_manual_x = 200; //[100:400]
//For "Manual" option: Build plate y dimension
build_plate_manual_y = 200; //[100:400]
if (show_build_plate == "Yes") {
    build_plate(build_plate_selector,build_plate_manual_x,build_plate_manual_y);
}

/* [Hidden] */
// Special variables for facets/arcs:
$fa = 1; // minimum fragment angle
// Minimum fragment size. If your running this on a local copy
// of OpenSCAD you can turn this down to make a smoother model (render
// times will drastically increase). To work with MakerBot
// Customizer on Thingiverse, this should be set to 2
$fs = 2;
//$fs = 0.8;

// Clearance to add to pockets to ensure fit (hint: use your nozzle diameter):
fit_clearance = 0.4; // [0:0.1:2.0]
// Width of lens support ring (excluding clearance):
lens_ridge = 1.6; // [0.8:0.2:2.4]
// How far above the lens pocket the iris should extend:
iris_proud = 2.0; // [0:0.2:4]
// How much to oversize the iris around the lens pocket:
iris_oversize = 8.0; // [4:1:12]
// Slope angle of the iris cone:
iris_slope = 40; // [30:5:60]

// How much the retina retainer ring should protrude from the shell
retain_proud = 3.0; // [0:0.2:5.0]
retina_ring_proud = 1.2;

// How much the coupling protrudes from the hemisphere
coupling_ht = 2.0;
// Thickness of the coupling ring
coupling_th = 2 * fit_clearance;

// Calculated parameters
// Clear Aperture
ca = lens_diam - 2 * lens_ridge;
// Lens pocket diam
pocket_diam = lens_diam + 2 * fit_clearance;
// Inner ring radius
r1 = sqrt(pow(ca, 2) + pow(bfl, 2)) / 2;
// Outer ring radius
r0 = r1 + shell_th;
// z-plane value of the top of the lens pocket (w/o iris)
pocket_top = sqrt(pow(r0, 2) - pow(pocket_diam/2, 2));
pocket_depth = pocket_top - bfl/2;
pocket_bot = pocket_top - pocket_depth;
iris_ht = iris_oversize * tan(iris_slope);
iris_diam_bot = pocket_diam + 2 * iris_oversize;
// How much the coupling ring intrudes inside the hemisphere
coupling_intrude = sqrt(pow(r1,2) - pow(r1-coupling_th,2));

// Function to calculate lens radius of curvature
// bfl: Back Focal Length
// th: Lens thickness
// ior: Lens index of refraction
function lensrad(bfl, th, ior) = (bfl + th/ior) * (ior - 1);

// Function to calculate the radial sag over a supplied diameter
// rad: arc radius
// diam: diameter at which to calculate the sag
function arcsag(rad, diam) = rad - sqrt(pow(rad, 2) - pow(diam / 2, 2));

// Function to calculate the diameter from the radius and sag
// rad: arc radius
// sag: arc sag
function arcdiam(rad, sag) = 2 * sqrt(2 * rad * sag - pow(sag ,2));

// Function to calculate the leg of supplied pythagorean
// hypotenuse and the its other leg
function pyleg(hypot, leg) = sqrt(pow(hypot,2) - pow(leg, 2));

// Find a "close" radius under thin lens conditions (th=0)
thinlens_radius = lensrad(bfl=bfl, th=0, ior=refractive_index);
// Build up a real thick lens using the thin lens radius as a starting point
// Thickness of the lens contributed by the curvature
thinlens_th = arcsag(thinlens_radius, lens_diam);
// Define the lens edge thickness as the pocket_depth
lens_eth = pocket_depth;
// Now find a reasonable total lens thickness
lens_tth = thinlens_th + lens_eth;
// Use this thickness to find the prescription for a real lens
lens_radius = lensrad(bfl=bfl, th=lens_tth, ior=refractive_index);
// Actual thickness from lens curvature then will be:
lens_cth2 = lens_radius - sqrt(pow(lens_radius,2) - pow(lens_diam/2,2));
// And actual edge thickness of the lens will be:
lens_eth2 = lens_tth - lens_cth2;

// Extend the lens radius all the way out to the edge of the mold
mold_diam2 = arcdiam(lens_radius, lens_tth);
// Slope angle of the lens mold exterior
mold_slope = 45;
// Thickness between the base of the mold and the vertex of the lens radius
mold_th = 2.0;
// Depth of the radius in the mold
mold_sag = arcsag(lens_radius, mold_diam2);
// Diameter of the base of the mold
mold_diam1 = mold_diam2 + 2*((mold_th + mold_sag)/tan(mold_slope));

module ring(od, id, h) {
  // Generate a ring
  // Adapted from the openscad documentation:
  // https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Include_Statement
  //
  // Parameters
  // ----------
  // od : Outer Diameter
  // id : Inner Diameter
  // h : height
  difference() {
    cylinder(h = h, d = od);
    translate([ 0, 0, -1 ])
      cylinder(h = h+2, d = id);
  }
}

module sclera() {
    // Fixed thickness shell
    difference() {
        // Outer Shell
        sphere(r=r0);
        // Inner Shell
        sphere(r=r1);
        // Chop off the bottom to leave a hemispherical shell
        translate(v=[0, 0, -1.1*r0/2])
        cube(size=[2.1*r0, 2.1*r0, 1.1*r0], center=true);
    }
}

module pupil_support() {
    // The pupil support ring tends to have difficulty
    // printing due to the overhanginess of the dome
    // at the pole. Put in a little support cone to
    // provide support.
    flatring_th = shell_th;
    flatring_bot = pocket_bot - flatring_th;
    // Flat ring support of the pocket. Added thickness helps ensure
    // edges are printing clean by time the extruder gets to the pocket
    flatring_od = 2*sqrt(pow(r1, 2)-pow(flatring_bot,2));
    translate([0, 0, bfl/2 - shell_th])
    ring(od=flatring_od + 0.01, id=ca, h=shell_th);
    // Construct a conical support for the flatring
    supring_th = shell_th;
    supring_bot = flatring_bot - supring_th;
    supring_od = 2 * pyleg(r1, supring_bot);
    difference() {
        intersection() {
            sphere(r=r0-.01);
            translate([0, 0, flatring_bot])
            translate([0, 0, -supring_th])
            difference() {
                translate([0, 0, 0.01])
                cylinder(h=supring_th, d=supring_od);
                cylinder(h=supring_th, d1=supring_od, d2=ca);
            }
        }
        cylinder(h=2*r0, d=ca);
    }
}

module pupil() {
    // Pupil clear aperture
    union() {
        difference() {
            children();
            cylinder(h=2*r0, d=ca);
        }
        pupil_support();
    }
}

module lens_pocket() {
    difference() {
        children();
        translate(v=[0, 0, bfl/2])
        cylinder(h=r0, d=pocket_diam);
    }
}

module iris() {
    // So we don't have a large unsupported flat area from the
    // iris cone, subtract out the inner hemisphere shell
    // then r0
    difference() {
        translate(v=[0, 0, pocket_top + iris_proud - iris_ht])
        cylinder(h=iris_ht, d1=iris_diam_bot, d2=pocket_diam);
        sphere(r=r1);
    }
}

module led_holes() {
    // Only punch holes for 1 LED or more
    if (num_leds > 0) {
    ang_step = 360 / num_leds;
    // Center the LED in the ring of the iris
    led_cent = pocket_diam/2 + iris_oversize/2;
    difference() {
        children();
        for (t = [0:ang_step:360-ang_step]) {
                rotate(a=[0, 0, t])
                translate(v=[led_cent, 0, 0])
                cylinder(h=2*r0, d=led_hole_diam, $fs=$fs/10);
            }
    }
 } else { // num_leds == 0
     // Nothing to do but return the children
     children();
 }
 }

module front_half_subassy() {
    // Front half sub-assembly
    translate(v=[0, 0, coupling_ht])
    led_holes()
    lens_pocket() // The retina pocket is the same dimension as the lens pocket
    pupil()
    union() {
        iris();
        sclera();
        coupling_ring();
    }
}

module front_half() {
    // Front half of the model including the Sclera
    // hemispherical shell, Iris, the pocket for the lens
    // and holes for the LEDs
    if (make_batt_holder == "Yes") {
        if (make_switch_hole == "Yes") {
            make_bhold()
            switch_hole()
            front_half_subassy();
        }
        else {
            make_bhold()
            front_half_subassy();
        }
    }
    else {
        if (make_switch_hole == "Yes") {
            switch_hole()
            front_half_subassy();
        }
        else {
            front_half_subassy();
        }
    }
}

module coupling_ring() {
    translate(v=[0, 0, -coupling_ht]) {
        // Good snap fit when no clearance between inner shell and
        // coupling ring OD
        ring(od=2 * r1,
             id=2 * (r1 - coupling_th),
             h=coupling_ht + coupling_intrude);
    }
}

module make_bhold() {
    // Put battery holder(s) into the shell
    batt_holder()
    children();
}

module switch_hole() {
    difference() {
        children();
        rotate([60, 0, 0])
        cylinder(h=2*r0, d=switch_hole_diam, $fs=$fs/10);
    }
}

module retina_ring() {
    // Provide a little extra bite for the retina retainer
    translate([0, 0, pocket_bot])
    ring(od=pocket_diam + 2*shell_th,
         id=pocket_diam,
         h=retina_ring_proud + pocket_depth);
}

module back_half() {
    // Back half of the model including the Sclera
    // hemisphereical shell and retina pocker
    lens_pocket() // The retina pocket is the same dimension as the lens pocket
    pupil()
    union() {
        sclera();
        retina_ring();
    }
}

module retina_retainer() {
    // Should be a tight fit so friction helps it stay put
    // Instead of 2*fit_clearance on the diameter, do 1*fit_clearance
    ring(od=pocket_diam - fit_clearance,
         id=pocket_diam - fit_clearance - shell_th,
         h=retain_proud + pocket_depth);
}

module mock_lens() {
    // Make the edge thickness portion of the lens
    cylinder(d=lens_diam, h=lens_eth2);
    translate(v=[0, 0, lens_eth2])
    // Create radiused portion of the lens
    difference() {
        translate(v=[0, 0, lens_cth2 - lens_radius])
        sphere(r=lens_radius);
        translate(v=[0, 0, -2.1*lens_radius/2])
        cube(size=2.1*lens_radius, center=true);
    }
}

module lens_mold() {
    // Carve out the lens radius
    difference() {
        cylinder(h=mold_th + mold_sag, d1=mold_diam1, d2=mold_diam2);
        translate(v=[0, 0, lens_radius + mold_th])
        sphere(r=lens_radius, $fs=$fs/2);
    }
}

module ice_mold() {
    // Create a mold which can be filled with water, then frozen
    // to make a melt away lens mold
    // How much extra to add to the base of the mold
    icemold_excess = 1.2;
    // Diameter of the icemold
    icemold_diam = mold_diam1 + 2.0;
    icemold_depth = mold_th + mold_sag + icemold_excess;
    translate([0, 0, icemold_depth])
    rotate([180, 0, 0])
    difference() {
        translate([0, 0, 0.01])
        cylinder(h=icemold_depth, d=icemold_diam);
        lens_mold();
    }
}

module lens_cutter() {
    // Insert to press into uncured silicone in the lens mold
    // to form the lens clear aperture
    grip_len = 15; // Length of cutter grip handle
    // Make the cutter flush with the total lens thickness
    cutter_sag = lens_tth;
    // Width of the cutter
    cutter_wd = arcdiam(lens_radius, cutter_sag);
        translate(v=[0, 0, grip_len]) // Move back up to XY plane
        difference() { // Core it out
            intersection () {
                translate(v=[0, 0, cutter_sag - lens_radius])
                sphere(r=lens_radius);
                cylinder(h=2*grip_len, d=cutter_wd, center=true);
            }
            cylinder(h=2.1*grip_len, d=lens_diam, center=true);
        }
}

module mold_pestle() {
    // Use the mold as a mortar and this part as a pestle
    // for post process finishing of the mold surface.
    // You can affix sandpaper to the round end and
    // put the other end in a drill chuck. It's probably
    // advisable to print this part with a brim as it's tall
    // and may get knocked over on the platen.
    // Total length of the pestle:
    pestle_length = 50;
    // Base diameter 3/8" and 1/2" are common max drill chuck sizes
    pestle_diam1 = 9.2; // 3/8" chuck
    //pestle_diam1 = 12.4; // 1/2" chuck
    // Length of the chuck before starting the taper
    chuck_length = 15.0;
    union() {
        cylinder(h=chuck_length, d=pestle_diam1);
        // Cone handle part of the pestle
        translate(v=[0, 0, chuck_length])
        cylinder(h=pestle_length - chuck_length, d1=pestle_diam1,
                 d2=lens_diam);
        // Put the mock lens at the top of the pestle
        translate(v=[0, 0, pestle_length])
        mock_lens();
    }
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
// Routines for generating the battery holder
// Inspired from bmcage's "Coin battery pack - No soldering needed"
// http://www.thingiverse.com/thing:79502 (thingiverse.com/bmcage)

// CR2032 Coin cell diameter
batt_diam = 19.8;
// CR2032 Coin cell thickness
batt_th = 3.0;
// Edge thickness of battery holder retainer walls
bhold_th = 1.2;
// Diameter of the battery mounting plate
bplate_diam = batt_diam + 2 * fit_clearance + 2*bhold_th;
// Depth of the holder geometry
bplate_depth = n_batts * batt_th + 2 * fit_clearance + bhold_th;
// How far inboard of the shell is needed to fit the whole plate
bplate_offset = arcsag(rad=r1, diam=2*bplate_diam);
// Depth of pocket for holding batteries
bpocket_depth = bplate_depth - bhold_th;
// Diameter of pocket for holding batteries
bpocket_diam = batt_diam + 2 * fit_clearance;
// Wire clearance diameter
wire_diam = 1.2;

module mock_cr2032() {
    // CR2032 mock-up
    translate(v=[0, 0, batt_diam/2])
    rotate(a=[0, 90, 0])
    cylinder(h=batt_th, d=batt_diam);
}

module wall_attach() {
    // Spherical interface to the inner shell
    difference() { // Truncate at battery plane
        translate(v=[r1 - bplate_offset, 0, 0])
        difference() { // Truncate bottom half of sphere
            sphere(r=r1+0.1); // Slight oversize to help CSG
            translate(v=[0, 0, -2.1*r1/2])
            cube(size=2.1*r1, center=true);
        }
        translate(v=[2.1*r1/2, 0, 0])
        cube(size=2.1*r1, center=true);
    }
}

module holder_boss() {
    union() {
        intersection() {
            union() {
                wall_attach();
                // The battery holder needs a little raft to get it up above
                // the centering ring without an overhang
                translate(v=[r1 - bplate_offset, 0, -coupling_ht])
                cylinder(h=coupling_ht+0.01, d=2*r1);
            }
            union() {
                translate(v=[0, 0, bplate_diam/2]) rotate(a=[0, 90, 0])
                cylinder(h=2.1*bplate_offset, d=bplate_diam, center=true);
                // Use cube for bottom half so holder is printable
                translate(v=[-bplate_offset, -bplate_diam/2, 0])
                cube([bplate_depth + bplate_offset, bplate_diam, bplate_diam/2]);
                // And a raft piece
                translate(v=[-bplate_offset, -bplate_diam/2, -coupling_ht])
                cube([bplate_depth + bplate_offset, bplate_diam, coupling_ht]);
            }
        }
          // Use cube for bottom half
          translate(v=[bplate_depth/2, 0, bplate_diam/4])
          cube([bplate_depth, bplate_diam, bplate_diam/2], true);
    }
}

module batt_pocket() {
    // Battery pocket solid (needs to be subtracted from boss)
    translate(v=[0, 0, bplate_diam/2])
    rotate(a=[0, 90, 0])
    cylinder(h=bpocket_depth, d=bpocket_diam);
    // Also include a hole in the bottom to help push the batteries back out
    removal_cutout_width = 6;
    removal_cutout_depth = pocket_diam + 2*coupling_ht;
    translate([0, -removal_cutout_width/2, -1.1*coupling_ht])
    cube([bpocket_depth, removal_cutout_width, removal_cutout_depth]);
}

module wire_holes() {
    // Holes for wires (needs to be subtracted from boss)
    $fs=$fs/10; // Locally increase resolution of facets
    wire_len1 = bplate_depth + bplate_offset + 2*shell_th;
    wire_xoff1 = bplate_offset + shell_th;
    wire_yoff1 = bplate_diam / 2 - wire_diam/2 - 2 * fit_clearance;
    wire_zoff1 = wire_diam/2 + 2 * fit_clearance;
    wire_len2 = bplate_depth + bplate_offset + 2*shell_th;
    wire_xoff2 = bplate_offset + bhold_th/2 + 2*shell_th;
    wire_yoff2 = bplate_diam / 4;
    wire_zoff2 = bplate_diam / 2;
    wire_len3 = batt_diam + 2*coupling_ht + 2*shell_th;
    wire_zoff3 = 1.1*(coupling_ht + shell_th);
    hole_diam = wire_diam + fit_clearance;
    wire_xoff3 = bplate_depth - (bhold_th + hole_diam) / 2;
    wire_zoff4 = wire_len3 - wire_zoff2;
    // Bottom corner holes (penetrate outer shell)
    translate([-wire_xoff1, -wire_yoff1, wire_zoff1]) rotate([0, 90, 0])
    cylinder(h=wire_len1, d=hole_diam);
    translate([-wire_xoff1, wire_yoff1, wire_zoff1]) rotate([0, 90, 0])
    cylinder(h=wire_len1, d=hole_diam);
    // Backplane holes and front face dedents (penetrate outer shell)
    translate([-wire_xoff2, -wire_yoff2, wire_zoff2]) rotate([0, 90, 0])
    cylinder(h=wire_len2, d=hole_diam);
    translate([-wire_xoff2, wire_yoff2, wire_zoff2]) rotate([0, 90, 0])
    cylinder(h=wire_len2, d=hole_diam);
    // Backplane wire channels
      // Horizontal channel
        translate([0, 0, wire_zoff2])
        rotate([90, 0, 0])
        cylinder(h=2*wire_yoff2, d=hole_diam, center=true);
      // Vertical channels
        translate([0, -wire_yoff2, -wire_zoff4])
        cylinder(h=wire_len3, d=hole_diam);
        translate([0, wire_yoff2, -wire_zoff4])
        cylinder(h=wire_len3, d=hole_diam);
    // Frontplane wire channels
    translate([wire_xoff3, 0, -wire_zoff3])
    cylinder(h=wire_len3, d=hole_diam);
    translate([wire_xoff3, 0, bplate_diam/4])
    rotate([90, 0, 0])
    cylinder(h=wire_len3, d=hole_diam, center=true);
}

module bhold_assy() {
    // Battery holder sub-assembly
    difference() {
        holder_boss();
        batt_pocket();
    }
}

module batt_holder_standalone() {
    // Generate the battery holder sub-assembly by itself
    //wall_attach();
    translate([0, 0, coupling_ht])
    difference() {
        bhold_assy();
        wire_holes();
    }
}

module batt_holder() {
    // Generate the battery holder in the context of the full
    // assembly.
    difference() {
        union() {
            children();
            translate([bplate_offset-r1, 0, coupling_ht])
            bhold_assy();
        }
        translate([bplate_offset-r1, 0, coupling_ht])
        wire_holes();
    }
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

module all_geom() {
    dx = 1.1 * r0;
    dy = 1.75 * r0;
    translate(v=[-dx, 0, 0]) front_half();
    translate(v=[ dx, 0, 0]) back_half();
    translate(v=[ -1.2*dx, dy, 0]) retina_retainer();
    translate(v=[ 0, -dy, 0]) mold_pestle();
    translate(v=[ 1.4*dx, dy, 0]) ice_mold();
    translate(v=[ 0, dy, 0]) lens_mold();
    translate(v=[ dx, -dy, 0]) lens_cutter();
    translate(v=[ -dx, -dy, 0]) mock_lens();
}

// Allow MakerBot Customizer to generate STL based on part selection
module print_part() {
    if (part == "Front_Half") {
        front_half();
    } else if (part == "Back_Half") {
        back_half();
    } else if (part == "Pupil_Support") {
        pupil_support(); // Development tool
    } else if (part == "Retina_Retainer") {
        retina_retainer();
    } else if (part == "Lens_Mold") {
        lens_mold();
    } else if (part == "Lens_Cutter") {
        lens_cutter();
    } else if (part == "Mold_Pestle") {
        mold_pestle();
    } else if (part == "Mock_Lens") {
        mock_lens();
    } else if (part == "Batt_Holder") {
        batt_holder_standalone(); // Development tool
    } else if (part == "Custom_Trim") {
        // Useful for cutting out small sections for print testing
        difference() {
            //trim_amount = 27; // For front_half
            trim_amount = 25; // For back_half
            translate(v=[0, 0, -trim_amount])
            back_half();
            //front_half();
            translate(v=[0, 0, -100])
            cube(size=200, center=true);
        }
    } else if (part == "Ice_Mold") {
        ice_mold();
    } else if (part == "All") {
        all_geom();
    } else {
        all_geom();
    }
}

//part = "Front_Half";
//part = "Back_Half";
//part = "Pupil_Support"; // Development tool
//part = "Retina_Retainer";
//part = "Lens_Mold";
//part = "Mold_Pestle";
//part = "Lens_Cutter";
//part = "Mock_Lens";
//part = "Custom_Trim"; // Development tool
//part = "Batt_Holder";  // Development tool
//part = "Ice_Mold";
//part = "All";
//show_build_plate = "No";
print_part();
```


[User]
Hi! I'm looking for some help designing a customizable box in OpenSCAD. I have a basic idea, but I'm not very good at coding.

The box should be cylindrical, with a separate lid and base that fit together snugly. I want to be able to adjust several parameters:

*   **Chamber Diameter:** This should control the inner diameter of the cylinder. I want to be able to choose from preset sizes like 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, and 60mm.
*   **Box Height:** This sets the total height of the box when the lid and base are combined. I'd like options for this as well, like 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, and 50mm.
*   **Wall Thickness:** I'd like to be able to control this via the number of "layers", and the layer thickness. Let's say we have `WALL_LAYER_TIMES` which is multiplied by `LAYER_THICKNESS` and the result is multiplied by 2 to make up the wall thickness. `WALL_LAYER_TIMES` should have preset values of 8 or 16, and `LAYER_THICKNESS` should have presets of 0.1, 0.2, 0.3, 0.4, and 0.5.
*   **Tolerance:** There should be a slight tolerance between the lid and base to make the fit work. I want to specify the size of the gap via a multiplier called `TOLERANCE_LAYER`. For example, if this value is 0.5, then we take the `LAYER_THICKNESS` and multiply it by 0.5 to get the gap size.
*   **Resolution:** The resolution of the curves should be set with `$fn`. It should be set via a variable `RESOLUTION` that defaults to 64.

The lid and base should connect via a male/female clip system. There should be 4 clips spaced evenly around the circumference of the box. The clip dimensions should also be customizable. For now, let's say the female connector has a width of the `connector` variable, while the male connector is slightly smaller via a `toleranz_maennlich` variable (set to 0 for now). Both of the clips should protrude from the main wall of the box by 1/2 the `connector` variable, and should extend above and below the edge of the lid or base by `connector*2`. The variable `connector` is defined as `7.5 - wall_thickness_mm` for now.

The overall height should be divided between the base and lid using the golden ratio, meaning the base's height should be `(box_height_inside/100)*61.8`. The inside height of the box `box_height_inside` is `BOX_HEIGHT+connector`, which takes the `BOX_HEIGHT` and adds the `connector`.

I'd also like to have a view mode which changes what is displayed:
*   **both_closed:** Shows the lid and base together like the assembled box.
*   **both_opened:** Shows the lid and base separated for viewing.
*   **print:** Shows the lid and base separated and translated horizontally for easier 3D printing.
*   **top:** Shows just the lid.
*   **bottom:** Shows just the base.

It would be great if you could generate the OpenSCAD code for this, with all the parameters exposed in the customizer. I think that covers everything! Thanks!

[Assistant]
customizable_box-v3.scad:
```
/* [Parameters] */
VIEW                    =        "both_opened";  // [ "both_closed": Preview, "both_opened": Open, "print":Print, "top": Single Top, "bottom": Single Bottom]
CHAMBER_DIAMETER        =       40;  // [ 20:20, 25:25, 30:30, 35:35, 40:40, 45:45, 50:50, 55:55, 60:60 ]
BOX_HEIGHT              =       15;  // [ 10:10, 15:15, 20:20, 25:25, 30:30, 35:35, 40:40, 45:45, 50:50 ]
/* [Hidden] */
WALL_LAYER_TIMES        =        6;  // [ 8:8, 16:16]
LAYER_THICKNESS         =        0.2;   // [ 0.1:0.1, 0.2:0.2, 0.3:0.3, 0.4:0.4, 0.5:0.5 ]
RESOLUTION              =       64;
TOLERANCE_LAYER         =        0.5;
wall_thickness_mm       = (WALL_LAYER_TIMES  * LAYER_THICKNESS)*2;
tolerance_mm            = LAYER_THICKNESS  * TOLERANCE_LAYER;
connector               = 7.5 - wall_thickness_mm;
$fn                     = RESOLUTION;

chamber_radius          = CHAMBER_DIAMETER/2;
box_outside             = chamber_radius + wall_thickness_mm;
cap_inside              = box_outside+tolerance_mm;
cap_outside             = cap_inside + wall_thickness_mm;

box_height_inside       = BOX_HEIGHT+connector;
box_height_bottom       = (box_height_inside/100)*61.8;
box_height_top          = box_height_inside-box_height_bottom;

//box3D_modus("bottom");

//box3D("bottom");
box3D_modus(VIEW);
//clip2D("weiblich");
//clip2D("maennlich");

module box3D_modus(modus) {
    if(modus == "top") {
        box3D("top");
    }

    if(modus == "bottom") {
        box3D("bottom");
    }

    if(modus == "both_closed") {
      translate( [      0,
                        0,
                        box_height_bottom+box_height_top ])
      rotate( [         0,
                      180,
                        0 ] )
      box3D("top");
      box3D("bottom");
    }

    if(modus == "both_opened") {
      translate( [      0,
                        0,
                        10 ] )
      translate( [      0,
                        0,
                        box_height_bottom+box_height_top ])
      rotate( [         0,
                      180,
                        0 ] )
      box3D("top");
      box3D("bottom");
    }

    if(modus == "print") {

      translate( [      chamber_radius + wall_thickness_mm*2,
                        0,
                        0 ] )
      box3D("top");
      translate( [     -chamber_radius - wall_thickness_mm*2,
                        0,
                        0 ] )
      box3D("bottom");
    }
}

module box3D(modus) {
    if(modus == "bottom") {
                difference() {
                    rotate_extrude() {
                        box2D_wConnector("bottom");
                    }

                    union() {

                      for(i = [0:3]) {
                          rotate( [  0,
                                     0,
                                     90*i ] )
                        translate( [ 0,
                                     0,
                                     box_height_bottom-connector/2 ] )
                        translate( [ 0,
                                     0,
                                     0 ] )

                        mirror([0,1,0])
                        rotate( [   0,
                                     270,
                                     0 ] )
                        linear_extrude(height = ((chamber_radius*2)+(wall_thickness_mm *2)+0.5)/2) {
                            clip2D("weiblich");
                        }
                    }
                }
            }
        }
   if(modus == "top") {
    union() {
       translate( [     0,
                        0,
                        0 ] )
       rotate( [        180,
                        0,
                        0 ] )
        translate( [    0,
                        0,
                        -box_height_bottom-box_height_top-connector ] )
        rotate_extrude() {
                        box2D_wConnector("top");
                    }
          intersection() {
          for(i = [0:3]) {
                          rotate( [  0,
                                     0,
                                     90*i ] )
                        translate( [ 0,
                                     0,
                                     box_height_top-connector/2 ] )
                        translate( [ 0,
                                     0,
                                     0 ] )

                        mirror([0,0,0])
                        rotate( [   0,
                                     270,
                                     0 ] )
                        linear_extrude(height = ((chamber_radius*2)+(wall_thickness_mm *2)+1)/2) {
                            clip2D("maennlich");
                        }
                    }
            translate( [    0,
                            0,
                            0.2 ] )
            difference() {
                cylinder(       r = chamber_radius + wall_thickness_mm - LAYER_THICKNESS ,
                                h = box_height_top + wall_thickness_mm ) ;
                translate( [    0,
                                0,
                                0 ] )
                cylinder(       r = chamber_radius ,
                                h = box_height_top + wall_thickness_mm ) ;
                                }

                }
   }
   }
}
module clip2D(modus) {

    toleranz_maennlich = 0;

    if(modus == "weiblich") {
    // WEIBLICH
    polygon( points =  [ [ 0,         0 ],
                         [ connector, 0 ],
                         [ connector, connector*2],
                         [ 0,         connector*3],
                         [ 0,         0 ] ] );
    }

    if(modus == "maennlich") {
    // MAENNLICH
    polygon( points = [  [ 0,         0 ],
                         [ connector,  0 ],
                         [ connector,  connector*2-toleranz_maennlich],
                         [ 0,  connector*1-toleranz_maennlich],

                         [ 0,          0 ] ] );
    }
}

module box2D_wConnector(modus) {
    if(modus == "top") {
        difference() {
            box2D("top");

            translate( [            0,
                                    0 ] )
            translate( [            chamber_radius,
                                    box_height_bottom + wall_thickness_mm] )
            square( [                wall_thickness_mm/2,
                                   connector ] );
            }
    }

    if(modus == "bottom") {
         difference() {
            box2D("bottom");

            translate( [            chamber_radius + wall_thickness_mm/2,
                                    box_height_bottom + wall_thickness_mm  ] )
            translate( [            0,
                                    -connector ] )
            square( [                wall_thickness_mm/2,
                                   connector ] );
            }
    }
}

module box2D(modus) {
      laenge = chamber_radius;
  rundung = wall_thickness_mm;

    if(modus == "top") {
    union() {
        union() {
            translate( [ 0,
                         box_height_top +
                         box_height_bottom +
                         wall_thickness_mm] )
            square([     laenge,
                         wall_thickness_mm ] );

            translate( [ laenge,
                         wall_thickness_mm+box_height_bottom ] )
            square([     wall_thickness_mm,
                         box_height_top ] );
        }

            translate( [ laenge-wall_thickness_mm/2,
                         box_height_top +
                         box_height_bottom +
                         wall_thickness_mm*2 ] )
            rotate( [   180,
                         0 ] )

            translate( [ -laenge+wall_thickness_mm/2,
                         0 ] )
        union() {
                    translate( [       laenge,
                                       rundung ] )
                    rotate( [          180,
                                       0 ] )
                    intersection() {
                        square( [  rundung,
                                   rundung ] );
                        scale( [   1.0,
                                   1 ] )
                        circle(r = rundung );
                                }
               translate( [        (rundung/10) * 5 ,
                                  -(rundung/10) * 5 ] )
                difference() {
                    translate( [  laenge-rundung,
                                  rundung ] )
                    square( [     rundung,
                                  rundung ] );

                    translate( [  laenge-rundung,
                                  rundung*2 ] )
                    rotate( [     180,
                                    0 ] )
                    intersection() {
                        square( [  rundung,
                                   rundung ] );
                        scale( [   0.5,
                                   0.5 ] )
                        circle(r = rundung );
                    };
                }
        }
    }
} if(modus == "bottom") {

    union() {
        translate( [  (rundung/10) * 5 ,
                     -(rundung/10) * 5 ] )
        difference() {
            translate( [  laenge-rundung,
                          rundung ] )
            square( [     rundung,
                          rundung ] );

            translate( [  laenge-rundung,
                          rundung*2 ] )
            rotate( [     180,
                            0 ] )
            intersection() {
                square( [  rundung,
                           rundung ] );
                scale([0.5, 0.5])
                circle(r = rundung );
            };
        }
          translate([   laenge,
                        rundung ])
          square( [ wall_thickness_mm,
                    box_height_bottom] );

            square( [     laenge,
                        rundung ] ) ;
            translate( [       laenge,
                               rundung ] )
            rotate( [          180,
                               0 ] )
            intersection() {
                square( [  rundung,
                           rundung ] );
                scale([1.0, 1])
                circle(r = rundung );
                        }
            }
        }
}

```


[User]
I'm looking to create a customizable cover for an electronic device, something like a blank faceplate or a backplate. I want it to be parametric so I can easily adjust the dimensions and other features.

Here's what I have in mind:

*   **Overall Shape:** The cover should be rectangular, with adjustable length and width.
*   **Frame:** It needs a raised frame around the perimeter. The width of this frame should be adjustable, and the frame itself will be the full thickness of the cover.
*   **Cover Thickness:** The overall thickness of the cover should be a parameter I can change. The frame should also be that total thickness.
*   **Mounting:** The inside of the cover should have a lip, like a small box, that fits inside the frame. This also needs to be adjustable in its dimensions, specifically offset from the outside edge of the frame. The thickness of this lip should be configurable, separate from the thickness of the outer frame and overall cover.
*   **Text:** I need the option to engrave or extrude text onto the front of the cover, within the frame. The text size and the depth (for extrusion) need to be adjustable. Also, I need to be able to rotate this text, relative to the cover, by a user defined amount.
*   **Pattern:** I want to have a pattern of holes or extrusions through the main part of the cover. These should be based on a grid, and the spacing and diameter of these grid items should be adjustable. Further, the grid items should be selectable: a circle, square, or equilateral triangle. The pattern should be offset from the interior lip by an adjustable amount. Additionally, I should be able to offset the entire pattern in the x and y dimensions by a user defined value.
*   **Preview:** I need three different views:
    *   A "Front" view showing the cover with the text on the top,
    *   A "Back" view showing just the frame and lip
    *   A "Print" view also showing the frame and lip

I'm thinking a modular design would be best, so each feature is easy to adjust separately. I'm not sure what libraries would be best, so I'll leave that to you.

[Assistant]
pc_cover_v3.scad:
```
/* [Parameters] */
VIEW                    =  0;  // [ 0:Preview (Front / Text), 1:Preview (Back / Frame), 2:Print ]
PATTERN_SHAPE           =  32;     // [ 2:Triangle, 4:Square, 32:Circle ]

LENGTH                  =  24.5*5;
WIDTH                   =  15.3*5 ;
HEIGHT_TOTAL            =  0.8*5;
FRAME_WIDTH             =  1*5;   // [ 0.1:0.1, 0.2:0.2, 0.3:0.3, 0.4:0.4, 0.5:0.5, 0.6:0.6, 0.7:0.7, 0.8:0.8, 0.9:0.9, 1:1, 1.1:1.1, 1.2:1.2, 1.3:1.3, 1.4:1.4, 1.5:1.5, 1.6:1.6, 1.7:1.7, 1.8:1.8, 1.9:1.9, 2:2]
/* [Hidden] */
////-------------------------------------------------------
TEXT                    = "";
RESOLUTION              =  16;  // [ 32:32 (RECOMMENDED), 64:64, 128:128, 256:256]
LAYER_HEIGHT            =  0.2; // OBJEKT
WALL_THICKNESS_IN_LAYER =  2;
OFFSET_RADIUS           =  0.3;
TOLERANZ_PRO_SEITE      =  0.2;
FRAME_HEIGHT            = HEIGHT_TOTAL/2;
MASK_LENGTH             = LENGTH - FRAME_WIDTH*2;
MASK_WIDTH              = WIDTH - FRAME_WIDTH*2;;
$fn                     = RESOLUTION;
wanddicke               = LAYER_HEIGHT * WALL_THICKNESS_IN_LAYER;
aussen_breite           = MASK_WIDTH + FRAME_WIDTH*2;
aussen_laenge           = MASK_LENGTH + FRAME_WIDTH*2;

laenge_komplett         = MASK_WIDTH + FRAME_WIDTH*2 + OFFSET_RADIUS;
breite_komplett         = MASK_LENGTH + FRAME_WIDTH*2 + OFFSET_RADIUS;
////-------------------------------------------------------

//kadinsky(0.5);
view();

module view() {
    if(VIEW == 0) {
        // FRONT
        rotate( [    180,
                     0,
                     0 ] )
        translate( [ -LENGTH/2,
                     -WIDTH/2,
                     0 ] )
        komplett();
    } else {
        if(VIEW == 1) {
            // BACK
            translate( [ -LENGTH/2,
             -WIDTH/2,
             0 ] )
            komplett();
        } else {
            // PRINT
            translate( [ -LENGTH/2,
             -WIDTH/2,
             0 ] )
            komplett();
        }
    }
}

module komplett() {
    union() {
    difference() {
        difference() {
            frame();
            kreise(1, 1, 2.5);
            }
        text_frame(TEXT, 0.675 * 5 );
        }
    halterung();
}

}

module kreise(radius, abstand, space) {

abstand_komplett        = FRAME_WIDTH + OFFSET_RADIUS/2 + space;
abstand_komplett_mitte  = FRAME_WIDTH + OFFSET_RADIUS + space;

x0                      =   abstand_komplett;
x1                      =   breite_komplett/2 - abstand_komplett_mitte/2;
x2                      =   breite_komplett/2 + abstand_komplett_mitte/2;
x3                      =   (breite_komplett - abstand_komplett/2) - abstand_komplett/2;
y0                      =   abstand_komplett;
y1                      =   laenge_komplett - abstand_komplett;

x_differenz             =   x1 - x0;
y_differenz             =   y1 - y0;
kreis_abstand           =   radius*2 + abstand;
x_i                     =   floor(x_differenz / kreis_abstand)-1;
y_i                     =   floor(y_differenz / kreis_abstand)-1;
groesse_gesamt          =   (y_i * kreis_abstand) + radius*2;
groesse_gesamt_x        =   (x_i * kreis_abstand) + radius*2 + radius;

groesse_differenz       =   (y_differenz - groesse_gesamt) / 2;
groesse_differenz_x      =  (x_differenz - groesse_gesamt_x) / 2;

for(h = [ 0 : 1]) {

     translate( [ radius + groesse_differenz_x + (h*x2-h*x0),
                  radius + groesse_differenz,
                  0 ] )

    for(j = [ 0 : y_i] ) {
        for(i = [ 0 : x_i] ) {
            if( j%2 == 0 ) {
                    color("yellow")
                    translate( [    x0 + radius,
                                    y0,
                                    0 ] )
                    translate( [    i*kreis_abstand,
                                    j*kreis_abstand,
                                    -((HEIGHT_TOTAL*5)*2)/2 ] )
                    cylinder(       r  = radius,
                                    h  = (HEIGHT_TOTAL*5)*2,
                                    $fn = PATTERN_SHAPE);

                } else {
                    color("yellow")
                    translate( [    x0,
                                    y0,
                                    0 ] )
                    translate( [    i*kreis_abstand,
                                    j*kreis_abstand,
                                    -((HEIGHT_TOTAL*5)*2)/2 ] )
                    cylinder(       r  = radius,
                                    h  = (HEIGHT_TOTAL*5)*2,
                                    $fn = PATTERN_SHAPE );
                }
            }
        }
}

}

module kadinsky(space) {

    abstand_komplett       = FRAME_WIDTH + OFFSET_RADIUS/2 + space;
    abstand_komplett_mitte = FRAME_WIDTH + OFFSET_RADIUS + space;

    translate( [    breite_komplett/2,
                    laenge_komplett/2,
                    0 ] )
    %cube( [        FRAME_WIDTH,
                    laenge_komplett,
                    2 ],
                    center = true );

    translate( [    breite_komplett/2,
                    laenge_komplett/2,
                    0 ] )
    %cube( [         abstand_komplett_mitte,
                    laenge_komplett,
                    2 ],
                    center = true );

    translate( [    abstand_komplett/2,
                    laenge_komplett/2,
                    0 ] )
    %cube( [        abstand_komplett,
                    laenge_komplett,
                    2 ],
                    center = true );

    translate( [    breite_komplett - abstand_komplett/2,
                    laenge_komplett/2,
                    0 ] )
    %cube( [        abstand_komplett,
                    laenge_komplett,
                    2 ],
                    center = true );

    translate( [    breite_komplett/2,
                    abstand_komplett/2,
                    0 ] )
    %cube( [        breite_komplett,
                    abstand_komplett,
                    2 ],
                    center = true );

    translate( [    breite_komplett/2,
                    laenge_komplett - abstand_komplett/2,
                    0 ] )
    %cube( [        breite_komplett,
                    abstand_komplett,
                    2 ],
                    center = true );

}

module text_frame(text, text_size) {

color("yellow")
translate( [    breite_komplett/2,
                laenge_komplett/2,
                (FRAME_HEIGHT*-1) / 2 ] )
linear_extrude( height = FRAME_HEIGHT) {
rotate( [       0,
                180,
                90 ] )
text(           str(text),
                size        =  text_size,
                halign      = "center",
                valign      = "center" );
}
}

module muster() {

    for(i = [0:4]) {
    translate( [    4*i,
                    0,
                    0 ] )
    cylinder(r = 2);
    }

}

module frame() {

color("black")
translate( [    OFFSET_RADIUS,
                OFFSET_RADIUS,
                0 ] )

linear_extrude( height = FRAME_HEIGHT) {

    offset(     r      = OFFSET_RADIUS) {

    square ( [  aussen_laenge   - OFFSET_RADIUS,
                aussen_breite   - OFFSET_RADIUS ] );
    }
}
 }

module halterung() {
translate( [ FRAME_WIDTH/2 + OFFSET_RADIUS/2,
             FRAME_WIDTH/2 + OFFSET_RADIUS/2,
             0 ] )

translate([    0,
               0,
               FRAME_HEIGHT ] )

linear_extrude( height = FRAME_HEIGHT) {
   difference() {
             square( [  MASK_LENGTH + FRAME_WIDTH,
                        MASK_WIDTH + FRAME_WIDTH ] );

            translate( [    FRAME_WIDTH/2,
                            FRAME_WIDTH/2 ])
             square( [  MASK_LENGTH,
                        MASK_WIDTH ] );
            }
    }
}
```


[User]
I'm looking to generate a parametric dead tree model in OpenSCAD, similar to the one in the provided example, but with more flexibility in controlling the various features. The base should be a cylinder, and the tree should have a trunk and branches that grow out in a somewhat random fashion.

Specifically, I'd like to be able to adjust:

*   **Overall Size:** I'd like to control the height and width of the tree.
*   **Trunk Thickness:** A parameter to change the thickness of the main trunk.
*   **Branching:** Control over the number of branches, their lengths, and the angle at which they grow out from the trunk.
*   **Branch Thickness:** A way to vary branch thickness relative to the trunk and between branches, and to have branches taper naturally.
*   **Randomness:**  The tree should have a somewhat organic look so parameters for the degree of randomness in branch angles, lengths, and thickness, would be ideal. I like the use of `rands()` from the example, so that should be incorporated.
*  **Roots:**  I'd like a system of roots, too, similar to the example, but with its own parameters to adjust their length, density, and direction.
*   **Ground:** A basic ground plane, probably a cylinder, and possibly some randomly placed rocks/stones around the base. The stone shapes could be very basic.

I'd like to use OpenSCAD's hull() function for smooth transitions.

I'm not interested in any specific libraries. Could you generate the necessary OpenSCAD code for this?

[Assistant]
DeadTree2Seeded.scad:
```
////////////////////
//Dead Tree generator by Torleif Ceder 2015 Creative Commons - Attribution - Share Alike
////////////////////
// preview[view:south west, tilt:top diagonal]

//RandomSeed
seed=17894759;//[1111:9999]
part=0;//[0,1]
mycolor=[0.3,0.15,0.09];
module grow(i,j,b)
{ union(){
    r=rands(-5,15+j,1)[0];
     rv=rands(-j*2,j*2,1)[0];
    goon=rands(0.8,2,1)[0];
    t=min(max(15,75/i),i*9);

    if(goon<1&&b>1&&j>2){
        difference(){
        color(mycolor)hull(){
            sphere(d=2*i,h=0.1,$fn=12);
rotate([r,rv,i]) translate([0,0,t])rotate([15,0,0])cylinder(d=2*(i-1),h=0.1,$fn=12);}

      color("tan")
rotate([r,rv,i]) translate([0,0,t])rotate([15,0,0])cylinder(d=1.7*(i-1),h=5,$fn=12);}}

        else{
            color(mycolor)
            hull(){if(i==20)
                {translate([0,0,-10]){
                    sphere(d=2*i,$fn=12);
rotate([0,0,rands(-360,360,1)[0]]) translate([0,(i-1)*1.5,-10])sphere(d=0.5*(i-1),$fn=8);
rotate([0,0,rands(-360,360,1)[0]]) translate([0,(i-1)*1.5,-10])sphere(d=0.5*(i-1),$fn=8);
rotate([0,0,rands(-360,360,1)[0]]) translate([0,(i-1)*1.5,-10])sphere(d=0.5*(i-1),$fn=8);

                    }
                    }
                else
                {sphere(d=2*i,$fn=12);}
rotate([r,rv,i]) translate([0,0,t])sphere(d=2*(i-1),$fn=12);
if(i>3){rotate([0,0,rands(-360,360,1)[0]]) translate([0,(i-1)*0.6,t*0.6])rotate([-30,30,0])sphere(d=1.1*(i-1),$fn=12);}

                }

    if(i>1 ){

    if(j/15+rands(0,1,1)[0]>=1){
    rotate([r,30+rv,i-180]) translate([0,0,0])grow(i-1,0,b+1);
    rotate([r,rv,i]) translate([0,0,t])grow(i-1,0,b+1);
    }else
    {rotate([r,rv,i]) translate([0,0,t])grow(i-1,j+1,b);}
        }
        }

    }
}

module root(i,j,b)
{ union(){
    r=rands(-25,25,1)[0];
     rv=rands(-0.15,0,1)[0];
    t=max(10,25/i);

            color(mycolor)
            hull(){sphere(d=2*i,$fn=12,$fs=10);rotate([rv,r,0]) translate([0,0,t])sphere(d=2*(i-1.5),$fn=12);
                rotate([0,0,rands(-90,90,1)[0]]) translate([0,-(i-1)*0.7,-0.1+t*rands(0,1,1)[0]])rotate([-30,30,0])sphere(d=1*(i-1.5),$fn=12);

                }

    if(i>=1 ){

    if(j/2+rands(0,1)[0]>=1){
   rotate([rv,r+45,0]) translate([0,0,t])root(i-1.5,0,b+1);
    rotate([rv,r-20,0]) translate([0,0,t])root(i-1.5,0,b+1);
    }else
    {rotate([rv,r,0]) translate([0,0,t])root(i-1.5,j+1,b);}
        }

    }
}
//module root(i){color(mycolor) union(){r=rands(-15,15,1)[0];rv=rands(-0.11,1,1)[0];t=max(10,25/i);hull(){sphere(d=2*i,h=0.1,$fn=12);rotate([rv,r,0]) translate([0,0,t])sphere(d=2*(i-1),h=0.1,$fn=12);}if(i>=1){rotate([rv,r,0]) translate([0,0,t])root(i-1);if(rands(0,1.08,1)[0]>=1){rotate([rv,r+45,0]) translate([0,0,t])root(i-2);}}}}
module stone(){ color("DarkGray")
    intersection(){
        rotate([rands(0, 360, 1)[0],rands(0, 360, 1)[0],rands(0, 360, 1)[0]])resize([rands(5, 10, 1)[0],1.4,1.4])
    //import("rock.stl", convexity=3);
    rotate([rands(0, 360, 1)[0],rands(0, 360, 1)[0],rands(0, 360, 1)[0]])cube(1.5,center=true );

    rotate([rands(0, 360, 1)[0],rands(0, 360, 1)[0],rands(0, 360, 1)[0]])resize([rands(5, 10, 1)[0],1.5,1.5])
    //import("rock.stl", convexity=3);
    rotate([rands(0, 360, 1)[0],rands(0, 360, 1)[0],rands(0, 360, 1)[0]])cube(1.5,center=true );
         rotate([rands(0, 360, 1)[0],rands(0, 360, 1)[0],rands(0, 360, 1)[0]])resize([rands(5, 10, 1)[0],1.4,1.4])
    //import("rock.stl", convexity=3);
    rotate([rands(0, 90, 1)[0],rands(0, 90, 1)[0],rands(0, 90, 1)[0]])cube(1.5,center=true );
    }}

*cube([1,1,28]);
scale(0.3)union(){

  intersection(){

     color("tan")   cylinder(r=200,h=300);
 translate([0,0,8])  grow(20,0,0);
  }

translate([0,0,-0.001])color("DimGray")cylinder(r=100.001,h=5.001);
translate([0,0,5])color("DimGray")cylinder(r=100.001,r2=95,h=5);

   intersection(){

       color("tan")   cylinder(r=94,h=100);

       translate([0,0,16])union(){
           for(i=[0:8]){
           color("DarkGray") rotate([0,0,i*40+rands(-0,36,10)[part]]) translate([30+rands(0,20,1)[0],0,-8])resize([40,50,15]) stone();  }
translate([0,0,10])
rotate([60,180,20+rands(-16,16,10)[part]])root(16,0,0);
rotate([80,181,60+rands(-15,15,10)[0]])root(19,0,0);

//rotate([60,180,60])grow(10);
rotate([75,182,200+rands(-15,15,1)[0]])root(20,0,0);
rotate([80,182,180+rands(-15,15,1)[0]])root(12,0,0);
           rotate([80,184,320+rands(-15,15,1)[0]])root(15,0,0);
//rotate([60,180,300])grow(10);
}}
 }
```


[User]
Hey, I'm looking to create a custom embossing stamp, and I'd like to use a grayscale image as the basis for the embossed pattern. I've got an image that's 150x150 pixels, and I want the black areas of the image to be the low points on the stamp, while the white areas become the ridges.

I need the ability to adjust the following parameters:

*   **Stamp Width:**  The overall width of the stamp.
*   **Stamp Height:** The overall height of the stamp.
*   **Ridge Thickness:** How thick the raised portions of the stamp will be.
*   **Punch Length:** The overall length of the main body of the stamp (basically, how tall is the non-embossed part?).

The units should all be in millimeters. I'm looking for a parametric design in OpenSCAD so I can easily adjust these dimensions.

Essentially, I want to upload a bitmap and get a physical embossing stamp output. Thanks!

[Assistant]
Customizable_Embossing_Stamp.scad:
```
// Copyright 2015 Arthur Davis (thingiverse.com/artdavis)
// This file is licensed under a Creative Commons Attribution 4.0
// International License.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

// Embossing Emblem stamp.
// Uploaded image should be high contrast and 150px x 150px.
// The black values will be low points and the white values will
// be ridges.
// Units are in mm

/* [Global] */
// Grayscale image. Black values are low points and white is high.
image_file = "emboss-surface.dat"; // [image_surface:150x150]
// Stamp width
part_width = 26.0; // [12.0:1.0:50.0]
// Stamp height
part_height = 26.0; // [12.0:1.0:50.0]
// Embossing ridge thickness
ridge_thick = 3.0; // [1.0:1.0:10.0]
// Length of the punch body
punch_length = 15.0; // [5.0:1.0:50.0]

/* [Hidden] */
// Special variables for arc generation:
$fa = 0.1; // minimum fragment angle
$fs = 0.2; // minimum fragment size
//  Logo image width
image_width = 150; // [50:1:150]
// Logo image height
image_height = 150; // [50:1:150]

translate(v = [0, 0, punch_length])
//scale(v = [width / image_width, height / image_height, ridge_thick / 255])
scale(v = [part_width / image_width, part_height / image_height, ridge_thick])
surface(file=image_file);

cube(size = [part_width, part_height, punch_length]);

```


[User]
I'd like to create some customizable garden stake signs using OpenSCAD. The basic idea is to have a sign with text on it, attached to a stake that can be pushed into the ground.

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

*   **Text:** The actual text that will be displayed on the sign (e.g., "TOMATOES", "HERBS", etc.).
*   **Letter Size:** A base size for the letters. I want the whole sign to scale depending on this value.
*   **Thickness:** The thickness of the sign's base and the stake.
*   **Base Center Offset (X):** How much the base is shifted left/right of the origin. This should also shift the attached text.
*   **Base Center Offset (Y):** How much the base is shifted up/down from the origin. This should also shift the attached text.
*   **Stake Width:** The width of the stake.
*   **Stake Length:** The length of the stake.
*   **Font:** The font used for the text.

The sign itself should be built by creating a hull of two cylinders to form a sort of rounded rectangle shape, where the text will sit on top of. The stake should be a simple rectangular prism that connects to the center of the sign. The stake should extend directly downward from the base of the sign.

Could you generate an OpenSCAD file that allows me to adjust these parameters to create different garden stake signs? I'm thinking the main file should handle all the calculations and drawing. Let's not worry about breaking this into separate files at the moment.

[Assistant]
CustomizeableGardenStakes.scad:
```
//Customizeable Garden Signs

//Approximite Size For Each Letter
Size = 10;

//Text
Text = "LETTUCE";

//Letters In The Text
Letters = 7;

//Thickness
Thickness = 3;

//Center (Distance That The Base Will Go To The Left)
Centerx = -5;

//Center (Distance That The Base Will Go Up)
Centery = 3;

//Stake Width
Width = 5;

//Stake Length
Length = 100;

//Base(Green)
translate([0,Length,0]){
    difference(){
        translate([(Letters*Size)/4+Centerx,(Letters*Size)/4+Centery,0]){
            hull(){
                cylinder(Thickness,(Letters*Size)/4,(Letters*Size)/4);
                translate([(Letters*Size)/2,0,0]){
                    cylinder(Thickness,(Letters*Size)/4,(Letters*Size)/4);
                }
            }
        }
        //Letters(White)
        color("Gold"){
            translate([0,(Letters*Size)/4,0]){
                translate([0,0,Thickness]){
                    text(Text, Size, "Liberation Serif");
                }
            }
        }
    }
}

//Stake(Grey)
color("SlateGray"){
    translate([Centerx,Centery,0]){
        translate([(Letters*Size)/2-Width/2,0,0]){
            cube([Width,Length,Thickness]);
        }
    }
}
```


[User]
I'd like a design for a printer accessory that looks organic and flowing, not like the usual rigid, geometric shapes. Think of it like intertwined, snaking creatures wrapping around a central post. I've seen one called a "Wyrm Guide" and that's the kind of aesthetic I'm going for.

Specifically, I need it to be based around a cylindrical post, and have a couple of these "wyrms" wrapping around it. The wyrms should be made of spheres and have a tapered look. I'd like the design to be parametric, so I can adjust things like the number of wyrms, the number of segments making up each wyrm, the length and diameter of the wyrms, how many rotations they make around the post, and even a phase shift to stagger their starting positions. Also, I'd want to be able to control how much the diameter of the wyrm segments changes along their length (basically how quickly they taper).

The final design should be designed to fit snugly around the nozzle and cylindrical post when 3D printed.

Here's a list of specific parameters I'd like to control:

*   `nozzle`: diameter of the printer nozzle (e.g. 0.4mm). This should be used to create a hole for the nozzle at the center of the Wyrm's base.
*   `postDiameter`: diameter of the cylindrical post the wyrms wrap around
*   `numWyrms`: the number of wyrms that wrap around the post
*  `wyrmSegments`: the number of spherical segments that form each wyrm
*   `wyrmLength`: the overall length of each wyrm
*   `wyrmDiameter`: the starting diameter of each wyrm. Note that the wyrm segments should taper from this.
*   `wyrmRotations`: the number of rotations each wyrm makes around the post, and the direction as indicated by a positive or negative value.
*   `wyrmPhase`: the starting angle offset of each wyrm.
*   `wyrmRatio`: controls the rate of taper in the wyrm segments.

I'd prefer the design to not use any external libraries - just the core OpenSCAD functionality, if possible. Let me know if you have any questions.

[Assistant]
WyrmGuide.scad:
```
// by Les Hall
// started 2:06 AM Fri Jul 10 2015
//

$fn = 12;
nozzle = 0.4;
postDiameter = 12;
numWyrms = 2;
wyrmSegments = 67;
wyrmLength = 67;
wyrmDiameter = 15;
wyrmRotations = 2;  // positive or negative for direction
wyrmPhase = 90;
wyrmRatio = 1.5;

thing();

module thing()
{
    difference()
    {
        wyrms(numWyrms, wyrmSegments, wyrmLength,
            wyrmDiameter, wyrmRotations, wyrmPhase,
            wyrmRatio);

        rotate(180, [0, 1, 0])
        cylinder(r = postDiameter/2 + wyrmDiameter,
            h=wyrmDiameter);
    }
}

module wyrms(numWyrms, wyrmSegments, wyrmLength,
    wyrmDiameter, wyrmRotations, wyrmPhase,
    wyrmRatio)
{
    for (w = [0 : numWyrms-1], s = [0 : wyrmSegments-1])
    {
        segmentDiameter =
            (wyrmSegments*(1+wyrmRatio) - s) /
            (wyrmSegments*(1+wyrmRatio) ) *
            wyrmDiameter;
        r = postDiameter/2 - nozzle + segmentDiameter/2;
        theta = wyrmRotations * 360 / numWyrms * sin(180 * s / wyrmSegments) + wyrmPhase;
        dL = wyrmLength / wyrmSegments;

        rotate(theta + 360 * w / numWyrms)
        translate([r, 0, 0])
        translate([0, 0, s * dL + wyrmDiameter * 0.33])
        rotate(atan2(r*theta, dL), [1, 0, 0])
        sphere(segmentDiameter/2);
    }
}

```


[User]
Hey, I'm looking for an OpenSCAD design for a parametric dead tree generator, something like what's described in this forum post I saw. The user wanted to avoid needing support material, which sounds really cool.

Basically, the tree should be procedurally generated, with a trunk that branches out into smaller limbs, and maybe some roots at the bottom. The key thing is to control the overhang angle of the branches so they don't need supports when 3D printed.

Here’s a breakdown of what I’m imagining, it's a bit of a mishmash of what I saw online and what I think would be cool:

*   **Random Seed:** I'd like to be able to specify a random seed to get different tree variations.
*   **Trunk:** The main trunk should have a variable thickness and some slight randomness in its shape.
*   **Branching:**
    *   **Wiggliness:** There should be a parameter to control how much the branches wiggle or curve, with perhaps more wiggliness towards the tips.
    *   **Inheritance:** I'd like a factor to determine how much a branch's direction is influenced by the previous branch.
    *   **Dominance:** Control the balance of branching between distal and proximal, the branch angles, and also the length of the branches to make it more interesting
*   **Overhang Control:** This is the most important bit. I'd like to be able to set a maximum overhang angle. Maybe this could be achieved by scaling the z-axis differently than the x and y axes.
*   **Radial Grouping:** A parameter to influence the clustering of branches radially around the trunk.
*   **Roots:** Some randomized roots at the base of the tree, they don't need as much overhang control.
*  **Stone Base:** Some randomized stones or rocks around the base as well, for the sake of visual design.

I'd also like to be able to specify a basic color for the tree and stones. And also I don't want any of it to be a flat extrusion (no `linear_extrude` unless absolutely necessary).

Could you generate an OpenSCAD design that can do all this? It doesn’t need to be a single file, I'm fine with multiple `.scad` files if that makes it easier. I'm not using any specific libraries right now, but let me know if anything would make the design easier.

[Assistant]
DeadTree2SeededHangOver.scad:
```
////////////////////
//Dead Tree generator by Torleif Ceder 2015 Creative Commons - Attribution - Share Alike
////////////////////
// preview[view:south west, tilt:top diagonal]

//RandomSeed
seed=17894759;//[1111:9999]
//Trunk
thick=2;// [1:0.1:4]
//Distal/proximal wigliness dominance
p1=0.25;//[0:0.01:1]
//Branch inheritance factor
p2=0.25;//[0:0.01:1]
//Distal/proximal branching dominance
p3=0.1;//[0:0.01:1]
// z scaler use for overhang control
up=1;//[0:0.1:5]
// x y scale use for overhang control
xyscaler=4.5;//[1:0.1:8]
//Radial Grouping factor
radial=0.2;//[-3:0.1:3]
// ...leave as is
part=0;//[0,1,2]
mycolor=[0.3,0.15,0.09];
module grow(i,j,b,nx,ny,accx,accy)
{ union(){
    ij=i*p1+j*(1-p1);
    sc=xyscaler;
    x=rands(-ij*sc,ij*sc,1)[0]*p2+nx*(1-p2) +(accx/50)*radial;
     y=rands(-ij*sc,ij*sc,1)[0]*p2 +ny*(1-p2)+(accy/50)*radial;
    goon=rands(0,5,1)[0];
    //t=max(rands(1.5,2.3,1)[0]*sc,abs(x),abs(y));
    t=9+up;

            color(mycolor)
            hull(){
                 rotate([0,0,60])   sphere(d=thick*i,$fn=12);
translate([x,y,t])sphere(d=thick*(i-1),$fn=12);
//translate([x*0.4,y*0.4,t*0.1])sphere(d=1.4*(i-1),$fn=12);

                }

    if(i>1 ){

    if(j/25+(20-i)/20*p3+(i)/50*(1-p3)+rands(0,0.60*p3+0.70*(1-p3),1)[0]>=0.99){
     translate([x,y,t])grow(i-1,1,b+1,x,y,accx+x,accy+y);
     translate([x,y,t])grow(i-2-rands(0,2,1)[0],1,b+1,-nx*0.5,-ny*0.5,accx+x,accy+y);
    }else
    {translate([x,y,t])grow(i-1,j+1,b,x,y,accx+x,accy+y);}
        }

    }
}

module root(i,j,b)
{ union(){
    r=rands(-25,25,1)[0];
     rv=rands(-0.15,0,1)[0];
    t=max(10,25/i);

            color(mycolor)
            hull(){sphere(d=1.5+thick*0.9*i,$fn=12,$fs=10);rotate([rv,r,0]) translate([0,0,t])sphere(d=1.5+thick*0.9*(i-1.5),$fn=12);
                rotate([0,0,rands(-90,90,1)[0]]) translate([0,-(i-1)*0.2*thick,-0.1+t*rands(0,1,1)[0]])rotate([-30,30,0])sphere(d=0.5+1.5+thick*0.4*(i-1.5),$fn=12);

                }

    if(i>=1 ){

    if(j/2+rands(0,1)[0]>=1){
   rotate([rv,r+45,0]) translate([0,0,t])root(i-1.5,0,b+1);
    rotate([rv,r-20,0]) translate([0,0,t])root(i-2,1,b+1);
    }else
    {rotate([rv,r,0]) translate([0,0,t])root(i-1.5,j+1,b);}
        }

    }
}
//module root(i){color(mycolor) union(){r=rands(-15,15,1)[0];rv=rands(-0.11,1,1)[0];t=max(10,25/i);hull(){sphere(d=2*i,h=0.1,$fn=12);rotate([rv,r,0]) translate([0,0,t])sphere(d=2*(i-1),h=0.1,$fn=12);}if(i>=1){rotate([rv,r,0]) translate([0,0,t])root(i-1);if(rands(0,1.08,1)[0]>=1){rotate([rv,r+45,0]) translate([0,0,t])root(i-2);}}}}
module stone(){ color("DarkGray")
    intersection(){
        rotate([rands(0, 360, 1)[0],rands(0, 360, 1)[0],rands(0, 360, 1)[0]])resize([rands(5, 10, 1)[0],1.4,1.4])
    //import("rock.stl", convexity=3);
    rotate([rands(0, 360, 1)[0],rands(0, 360, 1)[0],rands(0, 360, 1)[0]])cube(1.5,center=true );

    rotate([rands(0, 360, 1)[0],rands(0, 360, 1)[0],rands(0, 360, 1)[0]])resize([rands(5, 10, 1)[0],1.5,1.5])
    //import("rock.stl", convexity=3);
    rotate([rands(0, 360, 1)[0],rands(0, 360, 1)[0],rands(0, 360, 1)[0]])cube(1.5,center=true );
         rotate([rands(0, 360, 1)[0],rands(0, 360, 1)[0],rands(0, 360, 1)[0]])resize([rands(5, 10, 1)[0],1.4,1.4])
    //import("rock.stl", convexity=3);
    rotate([rands(0, 90, 1)[0],rands(0, 90, 1)[0],rands(0, 90, 1)[0]])cube(1.5,center=true );
    }}

*cube([1,1,28]);
scale(0.3)union(){

  intersection(){

     color("tan")   cylinder(r=200,h=300);
 translate([0,0,13+thick])  grow(20,0,0,0,0,0,0);
  }

translate([0,0,-0.001])color("DimGray")cylinder(r=100.001,h=5.001);
translate([0,0,5])color("DimGray")cylinder(r=100.001,r2=95,h=5);

   intersection(){

       color("tan")   cylinder(r=94,h=100);

       translate([0,0,16])union(){
           for(i=[0:8]){
           color("DarkGray") rotate([0,0,i*40+rands(-0,36,10)[part]]) translate([25+thick+rands(0,20,1)[0],0,-8])resize([40,50,15]) stone();  }
translate([0,0,10])
rotate([60,180,20+rands(-16,16,10)[part]])root(16,0,0);
rotate([80,181,60+rands(-15,15,10)[0]])root(19,0,0);

//rotate([60,180,60])grow(10);
rotate([75,182,200+rands(-15,15,1)[0]])root(20,0,0);
rotate([80,182,180+rands(-15,15,1)[0]])root(12,0,0);
           rotate([80,184,320+rands(-15,15,1)[0]])root(15,0,0);
//rotate([60,180,300])grow(10);
}}
 }
```


[User]
Hey, I'm looking to create a parametric design for a canister stabilizer, specifically for camping fuel canisters. I've seen some designs that clip onto the bottom rolled edge of the canister and then extend outwards with supporting legs, and I'd like something like that.

Here's what I'm thinking in terms of parameters:

**Canister Bottom Edge Dimensions:**

*   `edge_height`: The height of the rolled metal portion at the bottom of the canister. I'd like to be able to adjust this, probably within a range of 0.5 to 15.0mm, with 0.1mm increments.
*   `edge_width`: The width (or thickness) of that rolled metal edge, again adjustable from 0.5 to 10.0mm, with 0.1mm increments.
*   `edge_bevel_radius`: A small radius to bevel the inside edge where the clip attaches to the canister, maybe something from 0.01 to 2.0mm, with 0.05mm increments. This is mostly cosmetic, I think.
*   `metal_thickness`: The thickness of the metal right above the rolled edge, from 0.1 to 3.0mm, in 0.05mm increments. This affects how much of the support presses against the can.

**Holder Foot Dimensions:**

*   `include_support_peg`: A simple boolean option (or string option to be precise, "No\_Support\_Peg" or "Include\_Support\_Peg") to either include or exclude a small support peg directly under the canister.
*   `foot_width`: The overall width of the support, as viewed from above. I'm looking at a range of 1.0 to 10.0mm, in 0.1mm increments.
*   `foot_thickness`: How thick the support structure is, ranging from 0.5 to 10.0mm, with 0.1mm increments.
*   `foot_inner_length`: The length of the bottom part of the leg, before it curves down. Needs to go from 3.0 to 40.0mm, in 0.1mm increments.
*   `foot_lower_height`: The height of the support legs, 0.1 to 20.0mm, 0.1mm steps.
*   `foot_base_length`: The length of the part of the leg that touches the ground, adjustable from 3.0 to 40.0mm, with 0.1mm increments.
*   `cannister_contact_segment_height`:  The height of the vertical part that touches the side of the canister, probably around 2.0 to 20.0mm, with 0.1mm increments.
*   `inner_flange_height`:  The height of the flange that grabs the *inside* of the bottom edge of the canister. Something like 0.5 to 10.0mm, in 0.1mm increments.
*   `outer_leg_bevel_radius`: The radius of the rounded curve on the *outside* of the leg, from 1.0 to 20.0mm, in 0.1mm increments.

It's basically a clip that grabs the canister's rolled edge and then extends out with stabilizing legs. I'd really appreciate if you could generate an OpenSCAD file (or files) for this, maybe with a preview or example showing how to use the parameters. I'm not using any special libraries or anything. Thanks!

[Assistant]
pot_holder.scad:
```
// pot_holder.scad
// By Gregg Christopher, 2015.
// This file is public domain. Use at your own risk.

/* [Canister Bottom Edge Dimensions] */
// Height of the rolled metal portion (Rolled metal bottom of canister) Defaults are for a typical large 230g-ish canister.
edge_height = 4.5; // [0.5:0.1:15.0]
// Width (thickness) of the rolled metal portion
edge_width = 2.7; // [0.5:0.1:10.0]
// Radius to bevel the inside of the clip portion of the canister foot. Probably just cosmetic.
edge_bevel_radius = 0.5; // [0.01:0.05:2.0]
// Thickness of the thinner metal portion above the rolled edge. Decrease to enlarge the portion of the foot pressing against the canister, if the foot tends to tilt up.
metal_thickness = .8; // [0.1:0.05:3.0]

/* [Holder Foot Dimensions] */
// Option to include a small support directly below the canister; might make it harder to break when set on a flat surface with a heavy load.
include_support_peg = "Include_Support_Peg"; // [No_Support_Peg, Include_Support_Peg]
// Width of the entire support. (Viewed from above as it sticks out from the canister.)
foot_width = 4; // [1.0:0.1:10.0]
// Thickness of the support structure.
foot_thickness = 2.25; // [0.5:0.1:10.0]
// Length of the bottom of the support leg, before it curves down to the ground.
foot_inner_length = 10; // [3.0:0.1:40.0]
// Height of the support leg, nominally how high it will hold the canister up. (Since these are plastic, a large value here is probably unwise.)
foot_lower_height = 5; // [0.1:0.1:20.0]
// Length of the portion of the leg that makes contact with the ground.
foot_base_length = 15; // [3.0:0.1:40.0]
// Height of the vertical section that makes contact with the side of the canister.
cannister_contact_segment_height = 7; // [2.0:0.1:20.0]
// Height of the flange that grabs the inside bottom of the canister.
inner_flange_height = 3.1; // [0.5:0.1:10.0]
// Radius of the rounded portion on the outside of the upper leg of the support.
outer_leg_bevel_radius = 8; // [1.0:0.1:20.0]

/* [Hidden] */
// Calculate the angle at which the tangent line of the outer foot circle hits the rectangular top upper portion of he leg.

// Distance between the origin of the circle and the top corner of the leg

target_x_distance = (edge_width - 2*foot_thickness - metal_thickness) - (-foot_base_length - foot_inner_length - foot_lower_height + outer_leg_bevel_radius);
target_y_distance = (edge_height + cannister_contact_segment_height) - (-foot_lower_height - foot_thickness*0.5);
distance = sqrt(target_x_distance*target_x_distance + target_y_distance*target_y_distance);

// Radius of the outer foot circle portion
radius = outer_leg_bevel_radius + foot_thickness;

// Angle between the center point and the target point
otherangle = atan(target_y_distance/target_x_distance);

// Angle at which the line tangent to the circle intersects the target point
tangent_angle = acos(radius/distance) + otherangle - 90;

// Calculate the length of the upper leg segment, given all the above measurements.
tangent_point_x = -radius * sin(tangent_angle);
tangent_point_y = radius * cos(tangent_angle);

top_segment_x_distance = target_x_distance - tangent_point_x;
top_segment_y_distance = target_y_distance - tangent_point_y;

top_segment_length = sqrt(top_segment_x_distance * top_segment_x_distance + top_segment_y_distance * top_segment_y_distance);

module edge_outline() {
  translate([edge_bevel_radius, edge_bevel_radius])
  minkowski() {
    square([edge_width - 2*edge_bevel_radius, edge_height - 2*edge_bevel_radius]);
    circle(r = edge_bevel_radius, $fn = 20);
  }
}

linear_extrude(height = foot_width) {
  union() {
    // The main outline of the cannister clip
    difference() {
      union() {
        offset(delta = foot_thickness) edge_outline();
        // Extra material to reinforce the pot holder clip. (The weakest part of the structure.)
        translate([edge_width, foot_thickness*1.5*.1])
        scale([1, 1.1])
        intersection() {
          circle(r = foot_thickness*1.5, $fn = 30);
          //translate([0, -foot_thickness*1.5]) square([foot_thickness*1.5, foot_thickness*1.5]);
          translate([0, -foot_thickness*1.5])
          square([foot_thickness*1.5, foot_thickness*3.0]);
        }
      }

      edge_outline();
      //translate([edge_width - metal_thickness, edge_height - edge_bevel_radius])
      //square([metal_thickness, foot_thickness + edge_bevel_radius]);
      //translate([edge_width - metal_thickness, foot_thickness*1.0])
      translate([edge_width - metal_thickness, inner_flange_height])
      square([metal_thickness + foot_thickness*2, foot_thickness + edge_bevel_radius + edge_height - edge_bevel_radius - foot_thickness*1.0 + inner_flange_height]);
    }

    /*
    // Full length thicker flange
    //translate([edge_width, 0])
    // square([foot_thickness*1.5, edge_height/2 - foot_thickness/2]);

    translate([edge_width, edge_height - foot_thickness/2])
    %intersection() {
      circle(r = foot_thickness*1.5, $fn = 30);
      square([foot_thickness*1.5, foot_thickness*1.5]);
    }
    */

    // Inner segment holding the side of the cannister
    translate([edge_width - foot_thickness - metal_thickness, edge_height])
    square([foot_thickness, cannister_contact_segment_height]);

    translate([edge_width - 2*foot_thickness - metal_thickness, edge_height + cannister_contact_segment_height - foot_thickness])
    square([foot_thickness*2, foot_thickness]);

    // Optional support peg directly below the canister
    if(include_support_peg == "Include_Support_Peg") {
      translate([edge_width - foot_thickness, -foot_lower_height - foot_thickness*1.5])
      square([foot_thickness, foot_lower_height]);
    }

    // Main segment of bottom leg extension
    translate([-foot_inner_length - foot_thickness, -foot_thickness*1.5])
    square([foot_inner_length + foot_thickness + edge_width, foot_thickness]);

    // The curved portion of the lower leg extension
    translate([-foot_inner_length - foot_thickness, -foot_lower_height - foot_thickness*1.5])
    intersection() {
      difference() {
        circle(r = foot_lower_height + foot_thickness, $fn = 30);
        circle(r = foot_lower_height, $fn = 30);
      }
      translate([-foot_lower_height - foot_thickness, 0])
      square([foot_lower_height + foot_thickness, foot_lower_height + foot_thickness]);
    }

    // The bottom segment that rests on the ground
    translate([-foot_base_length - foot_inner_length - foot_thickness - foot_lower_height, -foot_lower_height - foot_thickness*1.5])
    square([foot_base_length, foot_thickness]);

    // The annoyingly shaped top leg extension

    translate([-foot_base_length - foot_inner_length - foot_lower_height + outer_leg_bevel_radius, -foot_lower_height - foot_thickness*0.5])
    intersection() {
      difference() {
        circle(r = outer_leg_bevel_radius + foot_thickness, $fn = 40);
        circle(r = outer_leg_bevel_radius, $fn = 40);
      }
      rotate([0, 0, 90]) square([outer_leg_bevel_radius + foot_thickness, outer_leg_bevel_radius + foot_thickness]);
      rotate([0, 0, 90 + tangent_angle]) square([outer_leg_bevel_radius + foot_thickness, outer_leg_bevel_radius + foot_thickness]);
    }

    translate([-foot_base_length - foot_inner_length - foot_lower_height + outer_leg_bevel_radius, -foot_lower_height - foot_thickness*0.5])
    rotate([0, 0, tangent_angle])
    translate([0, outer_leg_bevel_radius])
    square([top_segment_length, foot_thickness]);

    //translate([edge_width - 2*foot_thickness - metal_thickness, edge_height + cannister_contact_segment_height - foot_thickness])
    //circle(r = 0.5);

  }
}

```


[User]
Hey, I'm looking to create a customizable 3D printable puzzle, kind of like a sliding tile puzzle but with uniquely shaped pieces.

Here's what I have in mind:

*   **Puzzle Pieces (Stones):** I need 16 unique puzzle pieces. Each piece should be based on a 4x4x4 cube grid. The top surface of each "stone" should be randomly generated with different heights. It looks like I need to use something similar to `rands()` function. I need to make sure that each piece is very different from each other.

*   **Puzzle Board:** The puzzle needs a board with a 4x4 grid of square recesses where each piece fits. Each recess should also have a small lip so the stones don't slide too far down. I also would like to add little squares for each stone to slide on.

*   **Customization:**
    *   I need to be able to change the size of the base cube for each stone. Let's call it `cube_size`.
    *   I want to set the random seed for the height variations on the stones (`randomizer_seed`).
    *   I'd like the option to print just the stones, just the board, or both.

*   **Dimensions:**
    *   The base cube size of each stone will be equal on all sides and be controlled by `cube_size`.

I'm not too worried about the exact shapes/numbers but it must generate a working 3D puzzle. I would like to avoid using any external libraries if possible.

Can you generate the OpenSCAD code for this?

[Assistant]
puzzle.scad:
```
//make sure each stone is quite unique
randomizer_seed=1;
cube_size=20;

// Which one would you like to see?
part = "both"; // [first:Puzzle Only,second:Board Only,both:Puzzle and Board]

/* [Hidden] */
d=1;
ran=rands(cube_size/4,1.5*cube_size,9,randomizer_seed);

module a(){
polyhedron(
  points=[ [0,0,0],[0,4*cube_size,0],[4*cube_size,4*cube_size,0],[4*cube_size,0,0],[0,0,ran[0]],[0,2*cube_size,ran[1]],[0,4*cube_size,ran[2]],[2*cube_size,0,ran[3]],[2*cube_size,2*cube_size,ran[4]],[2*cube_size,4*cube_size,ran[5]],[4*cube_size,0,ran[6]],[4*cube_size,2*cube_size,ran[7]],[4*cube_size,4*cube_size,ran[8]] ],
  faces=[ [2,1,0],[2,0,3],[0,5,4],[1,6,5],[1,5,0],[0,4,7],[7,10,3],[0,7,3],[3,10,11],[11,12,2],[3,11,2],[2,12,9],[9,6,1],[2,9,1],[4,5,7],[5,8,7],[7,8,10],[8,11,10],[5,6,9],[5,9,8],[8,9,12],[8,12,11] ]
 );
}

module r(n){
difference(){
a();
translate([-10,cube_size*n+cube_size-d,-1])
cube([6*cube_size,4*cube_size,2*cube_size]);
translate([-cube_size,-4*cube_size+d+cube_size*n,-1])
cube([6*cube_size,4*cube_size,2*cube_size]);
}
}

module p(n,m){
union(){
difference(){
r(n);
translate([cube_size*m+cube_size-d,-cube_size,-1])
cube([4*cube_size,6*cube_size,2*cube_size]);
translate([-4*cube_size+d+cube_size*m,-cube_size,-1])
cube([4*cube_size,6*cube_size,2*cube_size]);
}

}
}

module stones(){
for(i=[0,1,2,3]){
for(j=[0,1,2,3]){
p(i,j);
}
}
}

module board(){
difference(){
translate([-1,-1,-1])
cube([4*cube_size+2,4*cube_size+2,4]);
for(i=[0,1,2,3]){
for(j=[0,1,2,3]){
translate([d/2+cube_size*i,d/2+cube_size*j,0])
cube([cube_size-d,cube_size-d,8]);
}
}
for(i=[0,1,2,3]){
for(j=[0,1,2,3]){
translate([(cube_size/8)+cube_size*i,(cube_size/8)+cube_size*j,-5])
cube([3*cube_size/4,3*cube_size/4,10]);
}
}
}
}

print_part();

module print_part() {
	if (part == "first") {
		stones();
	} else if (part == "second") {
        translate([0,0,1])
		board();
	} else if (part == "both") {
		stones();
        board();

	} else {
		stones();
        board();

	}
}

```


[User]
I need a mount designed for a safety button and a combined LED/USB module that attaches to a frame made of two parallel rods. The mount should be parametric so I can adjust it for different rod diameters, rod spacing, and overall thickness.

Specifically:

*   The frame rods are cylindrical, and the mount should have matching holes for them. I need to specify the rod diameter and the center-to-center distance between them.
*   The mount should have a specified overall thickness, and also have an option to define the material thickness outside of the rod holes (that is, how far outside the rod holes the mount extends on each side)
*   There should be a hole for a Pixhawk safety button on one side of the mount, which needs a specified radius and offset from the center.
*   On the opposite side of the mount should be a rectangular cutout for a combined LED/USB module.  The module's dimensions will be needed (width and height). I'd also like to specify how far from the rod center the base of the cutout should be, plus the width of the module's mounting tabs/section along with how far into the part that section should be. The position of the usb-led board in particular relative to the frame should be configurable, including the spacing between the usb-led board and the mounting tab and the spacing between the usb-led and the face of the module.
*   I should be able to specify a small general offset for both the button and LED module from the edge of the frame
*   I would like all dimensions to be in millimeters.

I'm not super familiar with OpenSCAD, so please make it as easy to customize as possible. Thanks!

[Assistant]
but_usb.scad:
```
// Frame rod diameter in mm
rod_d = 9;

// Frame rod spacing, mm (outer - to - outer)
rod_spacing = 74;

// Thickness of the part in mm
thickness = 12;

// Thickness of material outside the holes.
thickness_edge = 2;

rod_r = rod_d / 2;

offset = (rod_spacing - rod_r * 2)/2;

e = 0.1;

generic_offset = 3;

button_r = 9/2;
button_offset = button_r + generic_offset;

led_w = 19.1;
led_h = 5;
led_offset = generic_offset;
// width of the actual LED component
led_side = 3.5;
led_from_usb = 7;

module main_bar() {
    hull() {
        translate([-offset, 0, 0])
            cylinder(r = rod_r + thickness_edge, h = thickness);
        translate([offset, 0, 0])
            cylinder(r = rod_r + thickness_edge, h = thickness);
    }
}

difference() {
    main_bar();

    // mounting holes
    translate([offset, 0, -e])
        cylinder(r = rod_r, h = thickness + 2 * e);

    translate([-offset, 0, -e])
        cylinder(r = rod_r, h = thickness + 2 * e);

    // safety button
    translate([-button_offset, 0, -e])
        cylinder(r = button_r, h = thickness + 2 * e);

    // led + usb module
    y_offs = rod_r;

    translate([led_offset, -y_offs, -e]) {
        cube([led_w, led_h, thickness + e * 2]);
        translate([
                led_w / 2 - led_side / 2,
                -thickness_edge - e,
                led_from_usb])
            cube([led_side, thickness_edge + 2*e, led_side]);
    }
}

```


[User]
I'm looking to create some ramp pieces for my wargaming terrain, specifically for use with the TerraTiles system from RAINN Studios. I've got some ideas on how I want them to look, and I'm hoping you can help me design them in OpenSCAD.

The basic concept is a ramp with a textured top surface made of what I'm calling "stones." These stones are created from randomly rotated and intersected cubes. I'd like to be able to control the size of these stones, how many there are on the ramp, and how much they can rotate, which should affect the shape. I’d like to use a bit of randomization in their placement so they look natural.

The ramp itself should be customizable in terms of width, height, and length. The base of the ramp needs to be wider than the top to provide a stable foundation and I'd like to be able to adjust that ratio as well.

Here are the specific parameters I would like to control:

*   **Stone Dimensions:**
    *   `U`: Length of the cube that makes up a stone
    *   `V`: Thickness of the cube that makes up a stone
    *   `W`: Height of the cube that makes up a stone
*   **Stone Generation:**
    *   `master_seed`:  A seed to control the random stone generation and arrangement.
    *   `maximum_rotation_angle`:  The maximum angle a cube can be rotated when generating a stone (should be between 5-30 degrees).
    *   `n`: The number of cubes that make up a single stone (more cubes make for more facets).
    *  `power`: A way to reduce the ability of higher n to chop up a block.
*   **Ramp Surface:**
    *   `num_stones`: The number of stones on the ramp.
    *   `path_width`: The width of the top surface of the ramp.
    *   `path_rise`: The height of the ramp.
    *   `path_run`:  The length of the ramp (horizontal distance).
*   **Base:**
    *  `base_base_ratio`:  How much wider the base is than the top of the ramp (as a multiple of `path_width`).

I would like all units to be in millimeters, though I'd like to be able to set an `inch` variable for conversion that defaults to 25.4.

I will be using this with 1" risers (25.4mm) and need the path widths to be between 1.7 to 2.0 inches (approx 43 to 51 mm).

I'm hoping this design could be done without relying on any external libraries, just base OpenSCAD functionality. Could you generate the SCAD file(s) for this?

[Assistant]
TerraTile_Ramp.scad:
```
//Customizable TerraTile Road Tile
//Created by Ari M. Diacou, July 2015
//Shared under Creative Commons License: Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
//see http://creativecommons.org/licenses/by-sa/3.0/

// preview[view:south east, tilt:top diagonal]
/*[Stones]*/
//Length of a block that makes a stone
U=7;
//Thickness of a block that makes a stone
V=6;
//Height of a a block that makes a stone
W=5;
//A way to save the arrangement of stones
master_seed=5;
//Higher angles make more wedge-shaped stones, lower angles produce blocks. Reccomend 5-30 (zero crashes).
maximum_rotation_angle=30;
//Number of cubes that make up a block. Changes the number of facets on a stone.
n=8;
//A way to reduce the abilty of higher n to chop up a block (should be -2 to 2)
power=0.4;

inch=25.4+0; //most g-code compliers intercpret 1 unit = 1 mm.
inches=inch;

/*[Path Surface]*/
//How many stones do you want?
num_stones=16;
//What is the width of your path?
path_width=46;
//How high is the top part of the path?
path_rise=25.4;
//How far does the path extend?
path_run=100;

/*[Base]*/
//How much bigger than the top of the path should the base be?
base_base_ratio=2;

/*[Hidden]*/
//////////////////////// Parameters ////////////////////////////////////////////
dimensions=[U,V,W];
half_dimensions=[U/2,V,W];
//inches and inch defined above
incline=atan(path_rise/path_run); echo(str("incline angle = ",incline," degrees."));
path_length=path_rise/sin(incline);

/////////////////////////// Main() /////////////////////////////////////////////
intersection(){
    bounding_box(); //cut off stones that are outside the bounding box
    translate([-0*path_run*(1-cos(incline)),0,path_rise/2]) //move the stones to the surface of the base
        rotate([0,incline,0]) //rotate the stones to the incline of the base
            color("dimgray") top_surface(); //the stones only
    }
color("sienna") base();  //the base
//////////////////////// Functions /////////////////////////////////////////////
module bounding_box(){
    //Cuts off stones that would make the ramp not lie flat
    fudge=max(dimensions);
    translate([-path_run/2,-path_width/2-fudge])
    cube([path_run+fudge,path_width+2*fudge,path_rise+fudge]);
    }
module base(){
    //The base is made by wrapping a hull around 3 horizontal rods
    hull(){
        translate([path_run/2,0,0]) rod(path_width);
        translate([-path_run/2,0,0]) rod(path_width*base_base_ratio);
        translate([-path_run/2,0,path_rise]) rod(path_width);
        }
    }
module rod(l,d=.01){
    //creating a function "rod" made typing and legibility easier
    rotate([90,0,0])
        cylinder(r=d/2,h=l,center=true);
    }
module top_surface(seed=master_seed){
    //Puts a whole bunch of stones on the top part of the ramp
    random=rands(-1,1,num_stones*3+1,seed);
    for(i=[0:num_stones-1]){
        rotation_triplet=90*[random[i+0],random[i+1],random[i+2]];
        translation_triplet=[0.5*path_length*random[i+1],0.5*path_width*random[i+2],0];
        translate(translation_triplet)
            rotate(rotation_triplet)
                stone(dimensions, 12, seed+i);
        }
    }
module stone(unit_dimension, max_rotation, seed){
    //Makes a single stone by the intersection of n cubes rotated by a random amount.
	random=rands(-1,1,n*3,seed);
        intersection_for(i=[0:n-1]){
            rotate([	max_rotation*random[3*i+0]*pow(i,power),
                        max_rotation*random[3*i+1]*pow(i,power),
                        max_rotation*random[3*i+2]*pow(i,power)])
                cube(unit_dimension, center=true);
            }
	}
```


[User]
Hey, I'm looking to design a customizable toy playset with two different types of tracks for wheels. I've got a basic idea in mind, but I need some help coding it up in OpenSCAD.

Essentially, it'll consist of a base with two parallel tracks running along its length. One track will be a "square wheel" track, which will have a series of regularly spaced humps for a square wheel to roll over. The other track will be a halfpipe, designed for a circular wheel to roll along an axle.

Here are the specifics:

**Base:**
*   I need to be able to define the width, length, and thickness of the base as parameters. I'd like the default color to be green.

**Square Wheel Track:**
*   This track needs to have walls on both sides of it.
*   The humps will be cylindrical with a parameterizable height and width, and I need to be able to set how far apart they are along the track.
*   The walls should go slightly higher than the tops of the humps.
*   I want to be able to control the width of the track, the height of the humps, and the extra height of the walls, all as parameters.

**Halfpipe Track:**
*   This track should also have walls on both sides.
*   The track should start as a cube, and then I want to carve out a halfpipe shape. I need to be able to adjust how deep the halfpipe goes and the width of the track.
*   The walls for this track should be higher than the square track walls.
*   I'd like the slope of the halfpipe to be adjustable using a scale parameter in the Z direction.
*   I also need to cut out sections at the bottom to act as a channel for the axle.

**Wheels:**
*   I want a simple square wheel, with a width and height equal to some parameter times pi. I need to be able to control the depth of the square wheel.
*   I also need a circular wheel with an axle. I need to be able to set the radius of the wheel and the radius of the axle. Also need to be able to set the width of the axle.
*   The wheel should have an option for it to be one piece with the axle, or a separate wheel which fits onto the axle.

All of the dimensions should be controlled by parameters at the top of the file (or files if it makes more sense to split it). I would like default colors for the base, walls, square track, and halfpipe tracks. For now, I think red would be good for the walls and green would be good for the base.

I think that should cover everything. Let me know if you have any questions.

[Assistant]
WheelTrackSet.scad:
```
//Tracks

//Width Of Base(Change This If You Change Widths Of Tracks!)
Width = 75;

//Length Of Base
Length = 140;

//Thickness Of Base
Thickness = 3;

//Thickness Of Walls
WThickness = 5;

//Width Of Square Track
STWidth = 30;

//Height Of Humps On Square Track
HeightHumps = 10;

//Extra Height For Shortest Wall
Extra = 5;

//Height Of HalfPipe
HPHeight = 30;

//Width Of Halfpipe
HPWidth = 30;

//Halp Pipe ScaleZ(The Lower, The Smaller Slope. If Over 0.42, Tracks Will Not Appear at Bottom)
ScaleZ = 0.35;

//Depth Of HalfPipe Tracks
Depth = 10;

//Height Of Square Wheel
SWHeight = 10;

//Circle Wheel Axle Radius
ARadius = 3;

//Radius Of Circle Wheel
Radius = 10;

//Base(Green)
color("GreenYellow"){
    cube([Width,Length,Thickness]);
}

//Square Track
translate([WThickness,0,0]){
    for(c=[0:HeightHumps*2:Length]){
        translate([0,0,Thickness]){
            translate([0,c,0]){
                rotate([0,90,0]){
                    difference(){
                        cylinder(STWidth,HeightHumps,HeightHumps,$fn = 100);
                        rotate([0,-90,0]){
                            translate([-1,-HeightHumps,-HeightHumps]){
                                cube([STWidth+2,HeightHumps*2,HeightHumps]);
                                translate([0,-c,HeightHumps-1]){
                                    cube([STWidth+2,HeightHumps,HeightHumps+2]);
                                    translate([0,HeightHumps+Length,0]){
                                        cube([STWidth+2,HeightHumps,HeightHumps+2]);
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}

//Walls(Red)
color("Red"){
    translate([0,0,Thickness]){
        cube([WThickness,Length,HeightHumps+Extra]);
        translate([STWidth+WThickness,0,0]){
            cube([WThickness,Length,HPHeight]);
            translate([HPWidth+WThickness,0,0]){
                cube([WThickness,Length,HPHeight]);
            }
        }
    }
}

//Half Pipe
translate([STWidth+2*WThickness,0,Thickness]){
    difference(){
        cube([HPWidth,Length,HPHeight]);
        translate([0,Length/2,HPHeight]){
            scale([1,1,ScaleZ]){
                rotate([0,90,0]){
                    cylinder(HPWidth,Length/2,Length/2);
                    rotate([0,-90,0]){
                        translate([WThickness,0,-Depth]){
                            rotate([0,90,0]){
                                cylinder(HPWidth*1/6,Length/2,Length/2);
                            }
                        }
                    }
                    rotate([0,-90,0]){
                        translate([HPWidth*4/6,0,-Depth]){
                            rotate([0,90,0]){
                                cylinder(HPWidth*1/6,Length/2,Length/2);
                            }
                        }
                    }
                }
            }
        }
    }
}

//Wheels

//Square Wheel
translate([Width+5,0,0]){
    cube([HeightHumps*3.14,HeightHumps*3.14,SWHeight]);
}

//Circle Wheels/Axle
translate([Width+20,HeightHumps*3.14+20,0]){
    cylinder(HPWidth*1/6,Radius,Radius,$fn = 100);
    cylinder(HPWidth*4/6,ARadius,ARadius,$fn = 100);
}
translate([Width+20,HeightHumps*3.14+40+Radius*2,0]){
    difference(){
        cylinder(HPWidth*1/6,Radius,Radius);
        cylinder(HPWidth*1/6,ARadius,ARadius);
    }
}
```