[User]
Hey, I'm looking to create a parametric laptop privacy shield and I have a rough idea of what I'm after. I found a design online but want something a bit more flexible and better suited for 3D printing. I'd like to be able to change a few key dimensions so it can fit different laptops.

Here's what I'm thinking:

*   **Overall Shape:** A simple, bent shape that sits over the laptop's camera. It should be a rectangle that's bent to hook over the top of the laptop screen bezel. It will be a simple shape made of two rectangles
*   **Parametric Dimensions:**
    *   `lid_thickness`:  The thickness of the laptop lid (or screen bezel).
    *   `shield_width`: The width of the shield (how wide it covers).
    *   `shield_height`: The height of the shield (how much it extends down the laptop screen).
    *   `shield_buldge`: The height of the curve, the amount the top plane of the shield extends beyond the bottom plane.
    *   `tab_width`: The width of the tab.
    *   `tab_height`: The height of the tab
    *   `tab_depth`: The depth of the tab.
    *   `tab_offset_y`: How far up the tab begins on the main part of the shield.
    *   `clearance`: The amount of clearance between the edge of the shield and the laptop, to allow it to close without scratching the computer or screen. Should be a single value applied to x/y for the gap to the screen.
*   **Mounting/Attachment:** A small tab that will hold the shield in place, so it doesn't fall off.
*   **Material:** Something 3D printable, so the code should be geared toward that.

I want to be able to easily adjust all these values. Can you generate the OpenSCAD code for this?

[Assistant]
Parametric_Laptop_Privacy_Shield_V2.scad:
```
// laptop camera privacy shield

// dimension variables in mm -- should fit a macbook air by default
lid_thickness = 5; // your laptop's lid thickness
width = 10; // the desired shield width
height = 15; // distance from edge to screen (or slightly less)
buldge = 2; //The distance from the bottom to top of the shield

rotate([0,90,90]) {

// main shield
difference() {
cube([width, height+3, lid_thickness+buldge], center=true);
translate(v=[0,-1,0]) cube([width+4, height+2, lid_thickness], center=true);
}

// tab
translate(v=[0,height-(height*0.34),0]) cube([width,5,2],center=true);

}
```


[User]
I'd like to design some parametric inserts for my Allit Europlus Flex cases, kind of like the ones I saw online. I need the design to be flexible and let me control the dimensions.

Specifically, I want to be able to specify:

*   The number of rows the insert will have.
*   The number of columns the insert will have.
*   The number of vertical dividers within the insert.
*   The number of horizontal dividers within the insert.
*   The general wall thickness of the insert.
*   The thickness of the bottom of the insert.

I'd like the inserts to have rounded corners, both on the outer edges and where the dividers meet the walls. The height of the insert, as well as the width and depth of each cell will be fixed, but I would like to be able to easily adjust the other parameters. It should also be easy to adjust how much 'lip' there is at the top of the dividers.

Could you help me create an OpenSCAD file that can generate these inserts? I'm not very familiar with 3D design, so the easier to use, the better. I'm not looking for perfection, just something that I can modify for my needs, but that works out of the box. I'd like the model to be fairly robust, so that it can deal with a few corner cases - so maybe some error checking? I'm not sure how much detail you need, but I'm happy to provide more. Also, are there any libraries that will help simplify this process? I'm open to anything, really.

[Assistant]
Allit_Europlus_Flex_Insert_v_1_2.scad:
```
//User preferences:
//Only works with integers. e.g. 1,2,3,4...
numberOfRows = 2;
//Only works with integers. e.g. 1,2,3,4...
numberOfColumns = 1;
//Only works with integers. e.g. 1,2,3,4...
numberOfVerticalDeviders = 1;
//Only works with integers. e.g. 1,2,3,4...
numberOfHorizontalDeviders = 2;

//The general thickness of the insert in mm
wallThickness = 1.5;
//The thickness of the inserts bottom in mm
bottomThickness = 2.5;

/* [Hidden] */
//Model Variables:
//preview[view:south, tilt:top]

sphereResolution = 100;
removeOffset = 0.1;

insertWidth = 54;
insertDepth = 54;
insertHeight = 45;

innerRadius = 3.5;
outerRadius = 5;
insertAngle = 1;
lidGuideHeight = 4.5;

//Build;
buildModel();

module buildModel(){
 buildDeviders();
 buildInsert();
}

//Functions:
module buildInsert(){
 difference(){
	buildRoundedBox(insertWidth * numberOfColumns, insertHeight, insertDepth * numberOfRows, 0, 0, outerRadius);
   buildRoundedBox(insertWidth * numberOfColumns, insertHeight+removeOffset, insertDepth * numberOfRows, wallThickness, bottomThickness, innerRadius);
 }
}

module buildDeviders(){
 if(numberOfVerticalDeviders != 0){
  for (i = [0 : numberOfVerticalDeviders-1]){
   buildVerticalDevider(insertWidth * numberOfColumns, insertDepth * numberOfRows, i);
  }
 }
 if(numberOfHorizontalDeviders != 0){
  for (i = [0 : numberOfHorizontalDeviders-1]){
   buildHorizontalDevider(insertDepth * numberOfRows, insertWidth * numberOfColumns, i);
  }
 }
}

//Parts:
module buildRoundedBox(width, height, depth, wallThickness, bottomThickness, radius){
 hull() {
  translate([(((width/2)-radius)-wallThickness -insertAngle),(((depth/2)-radius)-wallThickness -insertAngle),bottomThickness+radius])
   sphere(r = radius, $fn=sphereResolution);
  translate([-(((width/2)-radius)-wallThickness -insertAngle),(((depth/2)-radius)-wallThickness -insertAngle),bottomThickness+radius])
   sphere(r = radius, $fn=sphereResolution);
  translate([(((width/2)-radius)-wallThickness -insertAngle),-(((depth/2)-radius)-wallThickness -insertAngle),bottomThickness+radius])
   sphere(r = radius, $fn=sphereResolution);
  translate([-(((width/2)-radius)-wallThickness -insertAngle),-(((depth/2)-radius)-wallThickness -insertAngle),bottomThickness+radius])
   sphere(r = radius, $fn=sphereResolution);

  difference(){
   hull() {
    translate([(((width/2)-radius)-wallThickness),(((depth/2)-radius)-wallThickness),height])
     sphere(r = radius, $fn=sphereResolution);
    translate([-(((width/2)-radius)-wallThickness),(((depth/2)-radius)-wallThickness),height])
     sphere(r = radius, $fn=sphereResolution);
    translate([(((width/2)-radius)-wallThickness),-(((depth/2)-radius)-wallThickness),height])
     sphere(r = radius, $fn=sphereResolution);
    translate([-(((width/2)-radius)-wallThickness),-(((depth/2)-radius)-wallThickness),height])
     sphere(r = radius, $fn=sphereResolution);
   }
   translate([0,0,height+radius])
    cube(size = [width*2, depth*2, radius*2], center = true);
  }
 }
}

module buildVerticalDevider(width, depth, pos){
 deviderXCoordinate = (width/2)-(width/(numberOfVerticalDeviders+1)+((width/(numberOfVerticalDeviders+1))*pos));

 difference(){
  translate([deviderXCoordinate,0,insertHeight/2]){
   hull(){
    rotate([0,-90,0]){
     linear_extrude(height = wallThickness+(innerRadius*2), center = true, convexity = 10, twist = 0){
      polygon([[(insertHeight/2)-lidGuideHeight,((depth/2)-(wallThickness/2))],[(insertHeight/2)-lidGuideHeight,-((depth/2)-(wallThickness/2))],[0,0]]);
      translate([-((insertHeight/2)-(innerRadius+(wallThickness/2))),(depth/2)-(wallThickness/2) -insertAngle -innerRadius,0])
       circle(innerRadius, $fn=sphereResolution);
      translate([-((insertHeight/2)-(innerRadius+(wallThickness/2))),-((depth/2)-(wallThickness/2) -insertAngle -innerRadius),0])
       circle(innerRadius, $fn=sphereResolution);
     }
    }
   }
  }

  hull() {
   translate([deviderXCoordinate+innerRadius+(wallThickness/2), depth/2-insertAngle-innerRadius-wallThickness, innerRadius+bottomThickness])
    sphere(r = innerRadius, $fn=sphereResolution);
   translate([deviderXCoordinate+innerRadius+(wallThickness/2), -(depth/2-insertAngle-innerRadius-wallThickness), innerRadius+bottomThickness])
    sphere(r = innerRadius, $fn=sphereResolution);
   translate([deviderXCoordinate+innerRadius+(wallThickness/2), (depth/2-innerRadius-wallThickness), insertHeight])
    sphere(r = innerRadius, $fn=sphereResolution);
   translate([deviderXCoordinate+innerRadius+(wallThickness/2), -(depth/2-innerRadius-wallThickness), insertHeight])
    sphere(r = innerRadius, $fn=sphereResolution);
  }

  hull() {
   translate([deviderXCoordinate-innerRadius-(wallThickness/2), depth/2-insertAngle-innerRadius-wallThickness, innerRadius+bottomThickness])
    sphere(r = innerRadius, $fn=sphereResolution);
   translate([deviderXCoordinate-innerRadius-(wallThickness/2), -(depth/2-insertAngle-innerRadius-wallThickness), innerRadius+bottomThickness])
    sphere(r = innerRadius, $fn=sphereResolution);
   translate([deviderXCoordinate-innerRadius-(wallThickness/2), (depth/2-innerRadius-wallThickness), insertHeight])
    sphere(r = innerRadius, $fn=sphereResolution);
   translate([deviderXCoordinate-innerRadius-(wallThickness/2), -(depth/2-innerRadius-wallThickness), insertHeight])
    sphere(r = innerRadius, $fn=sphereResolution);
  }
 }
}

module buildHorizontalDevider(width, depth, pos){
 deviderYCoordinate = (width/2)-(width/(numberOfHorizontalDeviders+1)+((width/(numberOfHorizontalDeviders+1))*pos));

 difference(){
  translate([0,deviderYCoordinate,insertHeight/2]){
   hull(){
    rotate([0,-90,90]){
     linear_extrude(height = wallThickness+(innerRadius*2), center = true, convexity = 10, twist = 0){
      polygon([[(insertHeight/2)-lidGuideHeight,((depth/2)-(wallThickness/2))],[(insertHeight/2)-lidGuideHeight,-((depth/2)-(wallThickness/2))],[0,0]]);
      translate([-((insertHeight/2)-(innerRadius+(wallThickness/2))),(depth/2)-(wallThickness/2) -insertAngle -innerRadius,0])
       circle(innerRadius, $fn=sphereResolution);
      translate([-((insertHeight/2)-(innerRadius+(wallThickness/2))),-((depth/2)-(wallThickness/2) -insertAngle -innerRadius),0])
       circle(innerRadius, $fn=sphereResolution);
     }
    }
   }
  }

rotate([0,0,90]){
  hull() {
   translate([deviderYCoordinate+innerRadius+(wallThickness/2), depth/2-insertAngle-innerRadius-wallThickness, innerRadius+bottomThickness])
    sphere(r = innerRadius, $fn=sphereResolution);
   translate([deviderYCoordinate+innerRadius+(wallThickness/2), -(depth/2-insertAngle-innerRadius-wallThickness), innerRadius+bottomThickness])
    sphere(r = innerRadius, $fn=sphereResolution);
   translate([deviderYCoordinate+innerRadius+(wallThickness/2), (depth/2-innerRadius-wallThickness), insertHeight])
    sphere(r = innerRadius, $fn=sphereResolution);
   translate([deviderYCoordinate+innerRadius+(wallThickness/2), -(depth/2-innerRadius-wallThickness), insertHeight])
    sphere(r = innerRadius, $fn=sphereResolution);
  }
}

rotate([0,0,90]){
  hull() {
   translate([deviderYCoordinate-innerRadius-(wallThickness/2), depth/2-insertAngle-innerRadius-wallThickness, innerRadius+bottomThickness])
    sphere(r = innerRadius, $fn=sphereResolution);
   translate([deviderYCoordinate-innerRadius-(wallThickness/2), -(depth/2-insertAngle-innerRadius-wallThickness), innerRadius+bottomThickness])
    sphere(r = innerRadius, $fn=sphereResolution);
   translate([deviderYCoordinate-innerRadius-(wallThickness/2), (depth/2-innerRadius-wallThickness), insertHeight])
    sphere(r = innerRadius, $fn=sphereResolution);
   translate([deviderYCoordinate-innerRadius-(wallThickness/2), -(depth/2-innerRadius-wallThickness), insertHeight])
    sphere(r = innerRadius, $fn=sphereResolution);
  }
}
 }
}
```


[User]
I need a parametric wrench designed in OpenSCAD. I've got a few specific requirements and some ideas for how it should look.

First, the wrench should have two different sized openings, one on each end. I need to be able to specify the size of each opening individually; let's call them `insert_size_a` and `insert_size_b`. These sizes correspond to the inner diameter of the nut, not the outer dimension. I'll be providing these values as parameters.

The overall length of the wrench should also be a parameter, `wrench_length`, which is the distance between the centers of the two openings.

I'd like the wrench to have a consistent thickness, which should be calculated based on the sizes of the inserts: `wrench_thickness = (insert_size_a + insert_size_b) / 4`. This thickness should apply to the main body of the wrench, and the regions around the openings.

The openings themselves should be created as a negative space cut-out. The shape of each opening should be based on a slightly rounded rectangle. This rounded rectangle should have a main rectangular body with width `insert_size` (either a or b depending on the end) and a small rounded portion. The rounded section should be created using a small portion of a cylinder with a radius slightly larger than the size of the insert. For more clarity, imagine a rectangle that has half cylinders attached on both short ends. These rectangles will need to be extruded.

To make it more durable, the region surrounding each opening should be thicker and have a more ergonomic shape. This can be achieved by using a hull function and creating a larger cylinder and a smaller cube. These should create a single shape with the desired thicker regions on each end of the wrench.

Finally, I'd like a small offset between the outside of the inserts and the start of the cutout. I think an offset of `offset = wrench_thickness` will do, and should be a parameter.

The final wrench should have a handle in the middle, joining the two openings. The overall wrench shape should be thicker at the ends than in the middle, as described above, but the handle should still be robust. I think it will look best if this transition between thin middle and thicker edges has an elliptical profile when viewed from the top.

I'm not looking to use any external libraries for this. Could you generate the OpenSCAD files necessary for this design?

[Assistant]
dsw.scad:
```
//Specify the distance between the centers of the inserts
wrench_length = 50;

//The size of the insert on the right side
insert_size_a = 5.5;

//The size of the insert on the left side
insert_size_b = 7.66;

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

/* [hidden] */
wrench_thickness = (insert_size_a + insert_size_b) / 4;
offset = wrench_thickness;

module insert(insert)
{
    /*
    linear_extrude(height=10,convexity=10)
    polygon(points=[[-insert/2,0],[0,insert/2],[insert+wrench_thickness,insert/2],[insert+wrench_thickness,-insert/2],[0,-insert/2]]);
    */

    union()
    {
        translate([-insert/2,-insert/2,0])
        cube([insert + wrench_thickness,insert,wrench_thickness+1]);

        translate([-insert/2,0,0])
        scale([1.25 + insert/20,insert/2,1])
        cylinder(r=1,h=wrench_thickness+1,$fn=44);
    }
}

difference()
{
    hull()
    {
        translate([wrench_length/2,0,0])
        scale([1,1 + insert_size_a/20,1])
        cylinder(r=insert_size_a/2 + wrench_thickness,h=wrench_thickness,$fn=insert_size_a*10);

        translate([wrench_length/2 - insert_size_a,-(insert_size_a + insert_size_b)/4,0])
        cube([1,(insert_size_a*1.05 + insert_size_b*1.05)/2,wrench_thickness]);
    }

    translate([wrench_length/2 + offset,offset/2,-0.5])
    rotate([0,0,30])
    {
        insert(insert_size_a);
    }
}

difference()
{
    hull()
    {
        translate([-wrench_length/2,0,0])
        scale([1,1 + insert_size_b/20,1])
        cylinder(r=insert_size_b/2 + wrench_thickness,h=wrench_thickness,$fn=insert_size_b*10);

        translate([-(wrench_length/2 - insert_size_b),-(insert_size_a + insert_size_b)/4,0])
        cube([1,(insert_size_a*1.1 + insert_size_b*1.1)/2,wrench_thickness]);
    }

    translate([-wrench_length/2 - offset, -offset/2,-0.5])
    rotate([0,0,30 + 180])
    {
        insert(insert_size_b);
    }
}

hull()
{
    translate([wrench_length/2 - insert_size_a,-(insert_size_a + insert_size_b)/4,0])
    cube([1,(insert_size_a*1.1 + insert_size_b*1.1)/2,wrench_thickness]);

    translate([-(wrench_length/2 - insert_size_b),-(insert_size_a + insert_size_b)/4,0])
    cube([1,(insert_size_a*1.1 + insert_size_b*1.1)/2,wrench_thickness]);
}
```


[User]
I need a custom bike mount for my Garmin Forerunner 910xt. It should attach to the bicycle stem using a cable tie. I'd like it to be parametric so I can easily adjust it for different stem diameters and cable tie sizes. I'd also like to be able to specify whether the mount is on the left or right side of the stem.

Here's what I'm thinking for the design:

*   **Stem Attachment:** The mount should have a curved section that wraps around the stem. The diameter of this curve needs to be adjustable based on the stem's diameter. It needs a gap for the cable tie.
*   **Watch Mount:** There should be a platform where the watch sits, with cutouts to accommodate its shape.
*   **Cable Tie Slot:** There needs to be a slot or channel for the cable tie to go through and secure the mount to the stem.  The width and height of this slot should be adjustable.
*   **Orientation:** I need a parameter to choose if the watch is mounted to the left or right side of the stem, as viewed when facing the handlebars.

I'd like the OpenSCAD file to use the `build_plate` module from a standard `utils` library, if available (or a similar way to visualize the build plate). I'd like to be able to select some standard printer sizes like 'Replicator 2', 'Replicator', and 'Thingomatic', and also specify manual X and Y dimensions of the build plate. Could you generate the necessary OpenSCAD file(s) for this?

[Assistant]
garmin_forerunner_910xt_bicycle_mount.scad:
```
/*************************************************************************************************/
/* SportsWatchMount - Copyright 2014 by ohecker                                                  */
/* Mounts a Garmin 910xt sports watch to a bicycle stem                                          */
/* This file is licensed under CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0/deed) */
/*************************************************************************************************/
use <utils/build_plate.scad>

/* [Basic] */

// Diameter of the stem (mm)
stem_diameter = 36;

// Height of the opening for the cable tie (mm)
binder_cutout_height = 2.5;

// Width of the opening for the cable tie (mm)
binder_cutout_width = 7;

// To which side of the stem should it be mounted?
orientation = 1.0; // [1.0:mounts to the left side of the stem, 2.0:mounts to the right side of the stem]

/* [Build Plate] */

//for display only, doesn't contribute to final object
build_plate_selector = 0; //[0:Replicator 2,1: Replicator,2:Thingomatic,3:Manual]

//when Build Plate Selector is set to "manual" this controls the build plate x dimension
build_plate_manual_x = 100; //[100:400]

//when Build Plate Selector is set to "manual" this controls the build plate y dimension
build_plate_manual_y = 100; //[100:400]

/* [Hidden] */

width = 50;
epsilon = 0.01;
big = 100;
stem_pos = 38 - (18-stem_diameter/2);

module shape_z() {
	intersection() {
		hull() {
			cylinder(r=57/2,h=big,center=true,$fn=50);
			translate([0,20,0])cylinder(r=27/2,h=big,center=true,$fn=50);
		}
		cube([width,big,big],center=true);
	}
}

module top() {
	difference() {
		translate([0,0,5])cube([width,47,10], center=true);
		watch_cut();
	}
}

module watch_cut() {
	union() {
		translate([0,0,5+4])cube([40,50+epsilon,10], center=true);
		sidecut();
		mirror([1,0,0])sidecut();
		frontbackcut();
		mirror([0,1,0])frontbackcut();
	}
}

module sidecut() {
	translate([20,0,4])rotate([0,-35,0])translate([40,0,40])cube([80,80,80], center=true);
}

module frontbackcut() {
	translate([0,35/2-1.5,4])rotate([-40,0,0]) difference() {
		translate([0,0,40])cube([80,80,80], center=true);
		translate([0,9,-12.1])rotate([0,90,0])cylinder(r=15,h=80,center=true,$fn=100);
	}
}

module main() {
	intersection() {
		union() {
			top();
			bottom();
			bracket();
		}
		shape_z();
	}
}

module bottom() {
	translate([0,0,epsilon])
	hull() {
		difference() {
			union() {
				translate([0,-8.6,0])rotate([0,90,0])cylinder(r=15,h=80,center=true,$fn=100);
				translate([0,4.7,-7])rotate([0,90,0])cylinder(r=20,h=80,center=true,$fn=100);
			}
			translate([0,0,big/2])cube(big,center=true);
		}
		translate([0,18.5,-7.3])rotate([0,90,0])cylinder(r=10,h=80,center=true,$fn=100);
	}
}

module bracket() {
	translate([0,0,epsilon])
	difference() {
		intersection() {
			translate([0,4.7,-7])rotate([0,90,0])cylinder(r=20+12,h=80,center=true,$fn=100);
			translate([0,4.7,-30])cube([100,10,20], center=true);
		}
		translate([0,4.7,-7])rotate([0,90,0])cylinder(r=20+8.5,h=33,center=true,$fn=100);
	}
}

module complete() {
	difference() {
		main();
		stemcut();
		bindercut();
	}
}

module bindercut() {
	difference() {
		translate([-stem_pos,5,-12])rotate([90,0,0])cylinder(r=(stem_diameter+3+binder_cutout_height*2)/2,h=binder_cutout_width,center=true,$fn=100);
		translate([-stem_pos,5,-12])rotate([90,0,0])cylinder(r=(stem_diameter+3)/2,h=binder_cutout_width+1,center=true,$fn=100);
	}
}

module stemcut() {
	translate([-stem_pos,0,-12])rotate([90,0,0])cylinder(r=stem_diameter/2,h=100,center=true,$fn=100);
}

if (orientation == 1)
{
	translate([0,0,width/2])rotate([0,90,0])complete();
} else {
	translate([0,0,width/2])rotate([0,-90,0])mirror([1,0,0])complete();
}
build_plate(build_plate_selector,build_plate_manual_x,build_plate_manual_y);

```


[User]
I need a parametric OpenSCAD design for a headphone hook that clamps onto the edge of a table or shelf.

Here's what I'm thinking:

*   **Clamp Mechanism:** It should have a C-shaped clamp that grips the table edge. The clamp should have a variable thickness (which I'll call `table_thickness` or something similar) to accommodate different table/shelf sizes. I'd also like a little bit of "give" in the grip so it doesn't crack - maybe a bit of curvature on the inner side of the clamp where it grabs the table.
*   **Hook:** Extending down from the clamp should be the actual hook where the headphones hang.  The height of this hook (let's call it `hook_height`) should be variable, and the depth (how far the hook projects out from the table edge - let's call it `hook_depth`) should also be adjustable.
*   **Width:**  The width of the hook (`hook_width`) should also be adjustable, as well as the thickness of the various structural elements - the horizontal (`horizontal_thickness`) and vertical (`vertical_thickness`) bits.
*   **Rounding:** I'd like the edges to be rounded a little bit, not too much. A fillet radius parameter might be nice (`fillet_radius`).
*   **Reinforcement:** It would be nice to have a support or two that extends from the hook back to the clamp body to give it some extra strength.

Basically, I'd like to define all of these dimensions as parameters so I can customize it for different tables and headphones. It also would be good to have $fa set to something useful.

For this, I would be happy to use the BOSL2 library, but if there is some reason that would make it harder or less clean, that is not a requirement.

Could you generate the OpenSCAD code for this?

[Assistant]
HeadphoneHook.scad:
```
/* [Global] */

//Shelf or table thicknes
a=50;

//hock height
b=24;

//depth
l=43;

//horizontal thickness
ht=3.5;

//vertical thickness
vt=2.5;

/* [Hidden] */

// width (messing with that beaks things atm)
w=15;

$fa=6;

rotate([90,0,0])
union() {
  union() {
    cube([l,w,vt]);
    translate([l-ht,0,-a]) cube([ht,w,a]);
  }

  translate([0,w/2,+vt-0.5]) rotate([0,90,0]) cylinder(l,2,2);

  union(){
    translate([0,0,-a-vt]) cube([l,w,vt]);
    translate([0,w/2,-a-vt+0.5]) rotate([0,90,0]) cylinder(l,2,2);
  }

  translate([0,0,-a-b-7.5]) cube([ht,w,b+7.5]);

  translate([l,2,vt]) rotate([0,180,0]) cylinder(a+2*vt,2,2);
  translate([l,w-2,vt]) rotate([0,180,0]) cylinder(a+2*vt,2,2);

  translate([0,2,-a]) rotate([0,180,0]) cylinder(b+2*vt+2,2,2);
  translate([0,w-2,-a]) rotate([0,180,0]) cylinder(b+2*vt+2,2,2);

  difference() {
    translate([0,7.5,-a-b-vt-vt-8])
    rotate([0,90,0]) cylinder(l,10,12);

    translate([-.5,-5,-a-b-vt-vt-8-12.5]) cube([l+1,25,18]);

    translate([-.5,-5,-a-b-vt-vt-8]) cube([l+1,5,10]);

    translate([-.5,w,-a-b-vt-vt-8]) cube([l+1,5,10]);
  }
}
```


[User]
I'd like to design a customizable tea light holder with a square base. The basic shape will be a twisted square shell. I need to be able to control the width, length, and height of the square base, the wall thickness of the shell, the amount of twist, and the resolution of the twist. I'd also like a cylindrical support for the tea light inside.

Here are the specific parameters I want to be able to adjust:

*   **`width`**: The width of the square base. I'd like to set a range for it, say 50-150mm.
*   **`length`**: The length of the square base, also with a range of 50-150mm.
*  **`height`**: The overall height of the tea light holder, range 50-150mm.
*   **`wallthickness`**: The thickness of the shell walls, range 1.5-5mm.
*   **`twist`**: The amount of twist in degrees, from 0 to 100.
*   **`resolution`**: The number of slices used for the twist, range 10-300. This will help with the smoothness of the twist.

The design should use a difference operation to create the shell by subtracting a smaller, offset twisted square from a larger one. Then inside of the twisted shell, I need a cylinder as a holder for the tea light, with adjustable size, say a height of 12mm and a radius of 20mm, and I also need a depression in that center post, maybe a second smaller cylinder with a 4mm height and 18mm radius, and both cylinders using a high number of facets for smoothness.
The code should output an scad file. I don't need to use any libraries.

[Assistant]
Tea.Light.Square2.scad:
```
//variables
width = 75; // [50:150]
length = 75; // [50:150]
height = 75; // [50:150]
wallthickness = 1.5; // [1.5:5]
twist = 40; // [0:100]
resolution = 10; // [10:300]

// twisted shell
difference(){
linear_extrude(height = height , twist = twist , slices =  resolution ) square([ width , length ], center=true);
translate ([0,0, wallthickness ])
linear_extrude(height = height- wallthickness , twist = twist , slices = resolution ) square( [ width - wallthickness , length - wallthickness ] , center=true);
}

// candle support
difference(){
cylinder (h=12, r=20, $fn=100);
translate ([0,0,8]) cylinder (h=4, r=18, $fn=100);
}

```


[User]
I'd like to design a customizable tea light holder with a star-shaped base that twists as it goes up. I'm thinking of something similar to what I have started with in "Tea.Light.Star.scad" but I want to make sure it's fully parametric and fits a standard tea light candle properly.

Specifically, here's what I need:

*   **Overall Dimensions:** The user should be able to specify the width, length, and height of the overall twisted star base.
*   **Wall Thickness:**  I need a parameter to control the thickness of the walls of the twisted base.
*   **Twist:** The amount of twist in the base should be adjustable via a parameter (in degrees).
*   **Resolution:** The number of slices used for the twist should be customizable, so that the smoothness of the curve can be adjusted.
*   **Candle Holder:** The candle holder should be sized to fit a standard tea light candle. I don’t know the exact dimensions but something around 38mm in diameter, with a slight inner lip to stop the candle from falling through, and about 12mm deep should work.
*   **OpenSCAD:** Please create one or more OpenSCAD files for the design, and also make sure it uses the BOSL2 library for the calculations. I have included code I am working with but please feel free to start from scratch.

I'm hoping for a design where the star base twists gradually as it rises, creating a sort of spiraled, star-shaped tower, and the tea light sits securely in the top. Let me know if you need any other information!

[Assistant]
Tea.Light.Star.scad:
```
//variables
width = 75; // [50:150]
length = 75; // [50:150]
height = 75; // [50:150]
wallthickness = 1.5; // [1.5:5]
twist = 40; // [0:100]
resolution = 100; // [10:300]

// twisted shell
difference(){
linear_extrude(height = zheight , twist = ztwist , slices =  zresolution ) union(){square([ zwidth , zlength ], center=true); rotate([0,0,45]) {square([ zwidth , zlength ], center=true);}}
translate ([0,0, zwallthickness ])
linear_extrude(height = zheight- zwallthickness , twist = ztwist , slices = zresolution ) union(){square( [ zwidth - zwallthickness , zlength - zwallthickness ] , center=true); rotate([0,0,45]) {square( [ zwidth - zwallthickness , zlength - zwallthickness ] , center=true);}}
}

// candle support
difference(){
cylinder (h=12, r=20, $fn=100);
translate ([0,0,8]) cylinder (h=4, r=18, $fn=100);
}

```


[User]
I need a parametric thimble designed in OpenSCAD. It should be customizable for different finger sizes, wall thicknesses, and hole patterns. Here are the details:

**Overall Shape:**

*   The basic form should be a cylinder with a rounded or spherical top. The user should be able to switch the rounded top for a flat top, making a vase or pot.
*   There should be an option to add a torus (a ring) at the base of the thimble.
*   Also, an option to add a reinforcement (a thicker section) at the base should exist.

**Customizable Dimensions:**

*   **Finger Diameter:** A parameter to set the inner diameter of the thimble to fit the user's finger. Take the largest diameter, as fingers aren't perfectly cylindrical.
*   **Wall Thickness:** A parameter to set the thickness of the thimble's walls. This should be greater than the hole diameter.
*   **Thimble Height:** A parameter to set the overall height of the thimble.

**Holes:**

*   **Hole Diameter:** A parameter to control the size of the holes.
*   **Hole Spacing (Top Sphere):** Separate parameters to control the vertical spacing and circular spacing of the holes on the top sphere.
*   **Hole Spacing (Cylinder):** Separate parameters to control the vertical spacing and circular spacing of the holes on the cylindrical part of the thimble.

**Additional Parameters:**

*   **Torus Diameter:** A parameter for the diameter of the torus at the base, if it's included.
*   **Torus On/Off:** A boolean parameter to enable or disable the torus.
*   **Base Reinforcement On/Off:** A boolean parameter to enable or disable the base reinforcement.
*  **Sphere Top On/Off**:  A boolean parameter to switch between a spherical/dome top and a flat top (for vase/pot).
*   **Resolution:** A parameter to control the resolution (number of facets) of the cylinder, the dome, and the torus.
*   **Hole Resolution:** A separate parameter to control the resolution of the holes.

I'm not picky about the exact algorithm used to generate hole patterns as long as there's good, even coverage on the thimble.

I also need the code to have comments explaining each major section. I am relatively new to OpenSCAD, so I would like any non-obvious math explained, if possible. I would like it to be easy to change the units, if necessary.

I don't need any external libraries.

Could you provide the OpenSCAD code for this?

[Assistant]
Parametric_Thimble_V0.9-Rudy_Ruffel.scad:
```
// ************* Credits part *************
//            "Parametric Thimble"
// Programmed by Rudy RUFFEL - Decembre 2014
// Optimized for Customizer makerbot
//
//********************** License ******************
//**        "Parametric Thimble" by rr2s         **
//**  is licensed under the Creative Commons     **
//** - Attribution - Non-Commercial license.     **
//*************************************************
//
// ************* Declaration part *************
/* [Global] */

/* [Dimension] */
// (Measure the diameter of your finger at your fingernail. Your finger is not cylindrical take the largest measurement.)
DiameterFinger = 18;
// (Note the wall thickness Must be supperior to diameter of the holes. If not you will have a sieve.)
ThicknessWall = 2;
// (Height of your Thimble)
HeightThimble = 20;

/* [Holes] */
// (Diameter holes.Warning not to put a number too small because the calculation is too long. Or the number of elements is too large and openscad bug.)
DimaeterHoles = 1.5;
//(Spacing Distance vertical holes for the top sphere. This parameters are for position the holes. Depending on your settings you will have to change.)
DHT		= 0.8;
//(Spacing Distance Circular holes Top sphere.This parameters are for position the holes. Depending on your settings you will have to change.)
HCD		= 2;
//(Spacing Distance Circular holes  for cylinder.This parameters are for position the holes. Depending on your settings you will have to change.)
HCDL	= 1.8;
//(Distance Holes Vertical for cylinder.This parameters are for position the holes. Depending on your settings you will have to change.)
HVD		= 0.8;

/* [Settings] */
// (Diameter of the torus. (bead to the base))
DiameterTorus = 4;
// (Would you like a torus at the base)
TorusBas = "true";//[true,false]
// (Would you like a reinforcement at the base)
RenfortBase = "true";//[true,false]
//// (Would you like a vase or pot. If yes = false.)
SphereTop = "true"; //[true,false]
// (Resolution of the cylinder, the dome top and torus. Warning not to put a number too big because the calculation is too long or openscad bug.)
Resolution = 45;// [20:150]
// (Resolution of the holes.Warning not to put a number too big because the calculation is too long or openscad bug.)
RexolutionHolle = 10;// [5:40]

/* [Hidden] */
// ************* private variable *************
	TH					= ThicknessWall;
	H					= HeightThimble;
	R					= Resolution;
	RH					= RexolutionHolle;
	RT					= DiameterTorus/2; // radius Torus
	RD  				= DiameterFinger/2; // radius Finger
	RDH					= RD-(RD*20/100);
// With Thickness
	RDTH				= RD+TH;    // radius finger + ThicknessWall
	RDHTH				= RDTH-(RDTH*20/100); // 20% less than the radius of the finger with TH
	HTH					= H+TH; // Height + TH
// Holes
	RCH 				= DimaeterHoles/2;  // Radius Cut Holes
	ZZ 					= RDHTH-RDTH;// For tangent
	TC 					= -90-atan(H/ZZ);// calculation tangente cylinder

  // Holes sphere Top
		NombreHoleRadiusTop  = round (RDHTH/(RCH*2+DHT));
		AngleHoleSphereTop = 45/NombreHoleRadiusTop;
 // Holes sphere Around
		nbTrouPerimetre = round(((RDTH-RCH*2.5)*2)*3.14/(RCH*2+HCDL));
		AngleDeRotTrouPerimetre = 360/nbTrouPerimetre;
		nbTrouVertical = (HTH/2)/(RCH*2+HVD)-0.5;
		DVX = ((RDTH-RDHTH)/2)/nbTrouVertical;

// ************* execution part *************
if (SphereTop   == "true"){ End();}
else{ rotate([180,0,0]) End();}

// ************* Fonction construction *************
module End(){
	difference(){
		Base();
		CutFinger();
		CutGround();
	}
}
module Base(){
	union(){
		CutHolleAround();
		if (SphereTop   == "true"){ FullSphereTop();}
		if (RenfortBase == "true"){ BourletBas();}
		if (TorusBas    == "true"){ BaseTorus();}
	}
}

module CutHolleAround(){
	difference(){
		BaseCylinder();
		HoleAround();
	}

}

// ************* Part base and Torus *************
module BaseCylinder(){
		cylinder(h=HTH	,r1=RDTH ,r2=RDHTH ,center=true,$fn = R);
}
module BaseTorus(){
	translate([0, 0,-HTH/2+RT*0.94])
	rotate_extrude(convexity = 10, $fn = R)
	translate([RDTH+-RT/3, 0,0])
	circle(r = RT, $fn = R);
}
module BourletBas(){
	if (TorusBas == "true"){
		translate([0,0,-HTH/3+RT/2]) cylinder(h=HTH/3,r1=RDTH+RT/2.2,r2=RDHTH*1.2 ,center=true,$fn = R);
		translate([0,0,-HTH/3+RT/2+(HTH/1.5)-HTH/2.09]) cylinder(h=HTH/20,r1=RDHTH*1.2,r2=RDHTH*1.142,center=true,$fn = R);
	}else{
		translate([0,0,-HTH/3]) cylinder(h=HTH/3,r1=RDTH+RT/2.2,r2=RDHTH*1.2 ,center=true,$fn = R);
		translate([0,0,-HTH/3+(HTH/1.5)-HTH/2.09]) cylinder(h=HTH/20,r1=RDHTH*1.2,r2=RDHTH*1.142,center=true,$fn = R);

	}
}

// ************* Part Cut *************
module CutGround(){
	translate([0 , 0, -HTH/2]) cube(size = [RD*3,RD*3,1], center = true);
}
module CutFinger(){
translate([0 , 0, -1]) cylinder(H+1,RD,RDH,center=true,$fn = R);
}

// ************* Part sphere top and holes sphere top *************
module FullSphereTop(){
	difference(){
	translate([0 , 0, HTH	/2+-RDHTH*1.735]) SphereTop();
	translate([0 , 0,-HTH	*2/2+HTH/2])  cube(size = [RDHTH*6,RDHTH*6,HTH	*2], center = true);
	}
}
module SphereTop(){
	difference(){
		sphere(r =RDHTH*2.004,$fn = R);
		translate([0,0,RDHTH*2])  sphere(r =RCH ,$fn = RH);
		for ( i = [1 : NombreHoleRadiusTop] ){
			for ( j = [0 : (round (((RCH*HCD*i)*2*3.14)/(RCH*2)))-1] ){
				rotate([0,AngleHoleSphereTop*i,j*360/round (((RCH*HCD*i)*2*3.14)/(RCH*2))])
 				translate([0,0,RDHTH*2])
				sphere(r =RCH ,$fn = RH);
			}
		}
	}
}

// ************* Part Cut Hole Cylinder *************
module HoleAround(){
	for ( i = [0 : nbTrouVertical] ){
			for ( j = [1 : nbTrouPerimetre] ){
				rotate([0,TC,AngleDeRotTrouPerimetre*j])
				translate([RDTH+ZZ*0.55,0,((RCH*2+HVD)*i)-1])
				sphere(r =RCH,$fn = RH);
			}
	}
}

```


[User]
I'd like to design a customizable container with a threaded lid, and I'd like to have several options for the lid style, including knurled patterns. The container itself should also have options for dividing it into compartments. I'm not sure how to best approach this, but I've seen some nice containers using OpenSCAD.

Here are the parameters I want to be able to control:

**Dimensions:**

*   `diameter`: The inner diameter of the container.
*   `height`: The inner height of the container.
*   `compartments`: The number of compartments inside the container (default 1).

**Appearance:**

*   `outside_chamfer`: The chamfer on the outside bottom edge of the container, as a percentage of the diameter. (default 5%)
*   `inside_chamfer`: The chamfer on the inside bottom edge of the container, as a percentage of the diameter. (default 2.5%)

**Thickness:**

*   `wall_thickness`: The thickness of the container walls. I want the default to be 2mm for diameters up to 60mm, 2.5mm for diameters between 61mm and 100mm, and 3mm for larger diameters, unless I specify a value.
*   `divider_wall_thickness`: The thickness of the walls separating the compartments. The default should be half the container's `wall_thickness`, unless I specify a value.
*  `container_bottom_thick`: The thickness of the container's bottom.  The default should be the same as `wall_thickness`.
*   `lid_top_thick`: The thickness of the lid's top. The default should also be the same as `wall_thickness`.

**Expert:**

*   `part`: Allows selection of the part to generate - "container_", "lid_left_knurled_", "lid_right_knurled_", "lid_vertical_knurled_", "lid_double_knurled_" or "lid_simple_non_knurled_".
*   `backlash`: The clearance between the threads. The default should be 1/4 of the `wall_thickness`, with a minimum of 0.2mm, unless I specify a value.
*   `solid_container`: An option to make a solid container without infill, used to improve print quality. Default is false.
*   `quality`: Used for the `$fn` variable to control the smoothness of circles and curves. Defaults to 100.

The knurled lids should have a pattern that is similar to the example provided in the reference code, with knurling variations for left, right, vertical, and double knurls. The "simple non-knurled" lid is just a plain cylinder with a thread.

I'm assuming it will be necessary to use the `rotate_extrude` and `linear_extrude` modules.

Can you generate the necessary OpenSCAD files for this?

[Assistant]
Container_v1_8_1.scad:
```
// 'Container with Knurled Lid' by wstein
// is licensed under the Attribution - Non-Commercial - Share Alike license.
// (c) April 2015 - April 2018
// please refer the complete license here: http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode

// Version 1.8.1
// Fixed outside quality of the container and lid.
//
// Version 1.8
// New simple non knurled lid.
//
// Version 1.7.1
// Bug fixed for latest customizer.
//
// Version 1.7
// generate all lid styles at once
// code optimized for openscad 2015.03 (no more timeout)
//
// Version 1.6
// added compartment option
// part "both" removed
//
// Version 1.5
// fixed broken left knurled lid.
//
// Version 1.4
// new expert setting.
//
// Version 1.3
// new: use $fn=100 for all threads to make them a little bit smoother.
//
// Version 1.2
// new: lid optimized for diameter smaller 20mm. The lid of an container with a diameter less than 20mm has now always the same height of about 6mm. This concerns also the thread which may not fit to containers of older versions!
// fixed: selecting both (Container and Lid) generated a none printable file: The object are on different level!

/* [Dimensions] */

// inner diameter (for outer dimension add 2x wall thickness) - minimum = 8.0mm
diameter=60.0;

// inner height (for outer dimension add 2x wall thickness)
height=40.0;

// Select how many compartments there should be in the container - default is 1.
compartments = 1; //[1:8]

/* [Appearance] */

// Container outside chamfer in percent of diameter. Use 0 for a flat outside bottom - default is 5%
outside_chamfer=5.0;

// Container inside chamfer in percent of diameter. Use 0 for a flat inner bottom - default is 2.5%
inside_chamfer=2.5;

/* [Thickness] */

// default value -1 means 2mm up to size 60, 2.5mm from 61 - 100. 3mm for larger.
wall_thickness=-1;

// default value -1 means take 1/2 of the container Wall Thickness
divider_wall_thickness=-1;

//thickness off container bottom. If you use the solid container model use the same value as setup in the slicer. default: -1 (use wall thickness)
container_bottom_thick=-1;

//thickness off lid top. Lid is always normal printing, so nothing special here, except reset the slicer to normal settings. default: -1 (use wall thickness)
lid_top_thick=-1;

/* [Expert] */

// to show? Only create once! You will get always all parts!
part = "container_"; // [container_:Container,lid_left_knurled_:Lid - Left Knurled, lid_right_knurled_:Lid - Right Knurled, lid_vertical_knurled_: Lid - Vertical Knurled, lid_double_knurled_:Lid - Double Knurled, lid_simple_non_knurled_:Lid - Simple Non Knurled]

// default value -1 means take 1/4 of Wall Thickness
backlash=-1;

//build a solid container, this is the key for high quality prints and also spare filament. You must print it with special settings (no infill, no top layer, bottom layer 1mm, shell thickness 1mm - must be about half of wall thickness). Works fine with Slic3r but I failed to setup Cura correct. Don't forget to reactivate top layer and infill before printing lid!
solid_container=0; //[1:true, 0:false]

quality=100; // [80:good, 100:high, 120:very high,150:best]

/* [Hidden] */

// ensure some minimal values
function diameter()=max(8,diameter);

function wall_thickness()=(
	wall_thickness!=-1 ? max(1.0,wall_thickness) : (
	diameter() <= 20 ? 1.5 : (
	diameter() <= 60 ? 2.0 : (
	diameter() <= 100 ? 2.5 :
   3.0))));

function get_divider_wall_thickness()=(divider_wall_thickness==-1?wall_thickness()/2:divider_wall_thickness);

bottom_thick=(container_bottom_thick<0?wall_thickness()/-container_bottom_thick:container_bottom_thick);
top_thick=(lid_top_thick<0?wall_thickness()/-lid_top_thick:lid_top_thick);

function backlash()=backlash==-1?wall_thickness()/4:max(0.2,backlash);
thread_height=(diameter()>20?diameter()/6:20/6);
function height()=max(2*(thread_height+bottom_thick),height);

$fn=quality;

lid_r=diameter()/2+wall_thickness()/2+backlash();
lid_r0=(diameter()>=20?lid_r:20/2+wall_thickness()/2+backlash()); // virtual radius, for diameter() < 20

intersection()
{
	assign(offset=(part=="both"?diameter()*.6+2*wall_thickness():0))
	union()
	{
		if(part=="container_")
		translate([0,-offset,0])
		container(diameter(),height());
		else
		translate([0,offset,(part=="cross"?height()-thread_height-wall_thickness()+bottom_thick+.1:thread_height+top_thick+wall_thickness())])
		rotate([0,(part=="cross"?0:180),0])
		lid(lid_r,lid_r0,thread_height+wall_thickness());
	}
	if(part=="cross")
	cube(200);
}

module lid(r,r0,h)
union()
{
	intersection()
	{
		translate([0,0,wall_thickness()])
		thread(r,thread_height,outer=true);

		cylinder(r=r+wall_thickness()/2,h=h);
	}

	difference()
	{
		assign(a=1.05,b=1.1)
		assign(ra=a*r+b*wall_thickness(),ra0=a*r0+b*wall_thickness(),h1=h+top_thick)

        if(part=="lid_right_knurled_")
        knurled(ra,ra0,h1,[1]);
        else if(part=="lid_left_knurled_")
        knurled(ra,ra0,h1,[-1]);
        else if(part=="lid_vertical_knurled_")
        knurled(ra,ra0,h1,[0]);
        else if(part=="lid_double_knurled_")
        knurled(ra,ra0,h1,[-1,1]);
        else
        cylinder(r=ra,h=h1);

		translate([0,0,-.1])
		cylinder(r=r+wall_thickness()/2,h=h+.1);
	}
}

knurled_h=[
0,
0.1757073594,
0.5271220782,
0.7116148055,
0.9007198511,
1];
knurled_rdelta=[.2,0,0.1,.3,.6,1.0];
shape_n=5;

module knurled(r,r0,height,degs)
assign(n=round(sqrt(120*(r+2*wall_thickness())*2)/shape_n)*shape_n)
assign(h_steps=len(knurled_h)-1)
assign(r_delta=-1.6*wall_thickness()/2)
//translate([0,0,height])
//rotate([180,0,0])
intersection_for(a=degs)
for(i=[0:h_steps-1])
assign(hr0=knurled_h[i],hr1=knurled_h[i+1])
assign(hr=hr1-hr0)
assign(rr0=knurled_rdelta[i],rr1=knurled_rdelta[i+1])
assign(rr=rr1-rr0)
translate([0,0,hr0*height])
rotate([0,0,35*height/r*hr0*a])
linear_extrude(convexity=10,height=hr*height,twist=-35*height/r*hr*a,scale=(r+r_delta*rr1)/(r+r_delta*rr0))
for(j=[0:n/4-1])
rotate([0,0,360/n*j])
circle(r=r+r_delta*rr0,$fn=5);

module container(r,h)
union()
{
	difference()
	{
		union()
		{
			container_hull(diameter()/2+wall_thickness(),height()+bottom_thick,outside_chamfer,[wall_thickness()/2,thread_height+wall_thickness()/2]);

			translate([0,0,height()-thread_height-wall_thickness()/2+bottom_thick])
			thread(diameter()/2+wall_thickness(),thread_height,outer=false);
		}

		if(!solid_container)
			translate([0,0,bottom_thick])

		container_hull(diameter()/2,height()+bottom_thick,inside_chamfer);
	}

	if(compartments > 1)
	{
        echo(get_divider_wall_thickness());
		for(a = [0 : 1 : compartments])
		{
			rotate((360 / compartments) * a)
            translate([-(get_divider_wall_thickness() / 2), 0, bottom_thick])
            cube([get_divider_wall_thickness(), diameter() / 2, height()]);
		}
	}
}

module container_hull(r,h,chamfer,thread_notch=[0,0])
{
	xn=thread_notch[0];
	yn=thread_notch[1];

	rotate_extrude(convexity=10)
	assign(x1=r*(50-chamfer)/50,x2=r,x3=r-xn,y1=r*chamfer/50,y2=h,y3=h-yn,y4=h-yn+xn)
	polygon([[0,0],[x1,0],[x2,y1],[x2,y3],[x3,y4],[x3,y2],[0,y2]]);
}

module thread(r,h,outer=false)
assign($fn=100)
{
	linear_extrude(height=h,twist=-250,convexity=10)
	for(a=[0:360/2:359])
	rotate([0,0,a])
	if(outer)
	{
		difference()
		{
			translate([0,-r])
			square(2*r);

			assign(offset=.8)
			translate([r*(1-1/offset),0])
			circle(r=1/offset*r);
		}
	}
	else
	{
		assign(offset=.8)
		translate([(1-offset)*r,0,0])
		circle(r=r*offset);
	}
}

```


[User]
I need a parametric OpenSCAD file for creating a customizable bowl. I want to be able to control the width, length, and height of the bowl, as well as the wall thickness. The bowl should be formed by taking the difference of two scaled spheres that are intersected with a cube. The final bowl should be scaled down by a factor of 0.5 to improve the design.

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

*   `width`: The width of the bowl.
*   `length`: The length of the bowl.
*   `height`: The height of the bowl.
*   `wallthickness`: The thickness of the bowl's wall.
*   `fragments`: The number of fragments to use for the spheres (affects smoothness).

The bowl should be created by performing a difference operation between two sphere/cube intersections. The outer shape should be a sphere scaled by `[width/height, length/height, 1]`, intersected with a cube. The cube's size should depend on which dimension is largest among width, length, and height. The inner shape is similar, except the sphere should have a reduced radius: `height - 2*wallthickness`, and should be scaled by `[sx, sy, 1]`, where sx and sy are determined via the following formulas:
    *   `sx = width/height*((width-2*wallthickness)/width)*height/(height-2*wallthickness)`
    *   `sy = length/height*(length-2*wallthickness)/length*height/(height-2*wallthickness)`

After the difference operation, the whole bowl should be scaled down by 0.5. This should result in a bowl with the correct dimensions and wall thickness. Please make sure the generated code is well-commented, so I can understand what each section does. Let me know if you have any questions. I'd like for the final bowl to be centered at the origin.

[Assistant]
Bowl.scad:
```
// variables
width = 75; // [20:400]
length = 50; // [20:400]
height = 25; // [20:400]
wallthickness = 2; // [2:10]
fragments = 100; // [100:200]
//scales
sx = width/height*((width-2*wallthickness)/width)*height/(height-2*wallthickness);
sy = length/height*(length-2*wallthickness)/length*height/(height-2*wallthickness);

scale(0.5) difference(){
	scale([width/height,length/height,1]) intersection(){
		sphere(r=height,$fn=fragments);
		if(width>length && width>height){
			translate([-width,-width,0]) cube(width*2);
		}
		if(length>width && length>height){
			translate([-length,-length,0]) cube(length*2);
		}
		if(height>length && height>width){
			translate([-height,-height,0]) cube(height*2);
		}
		if(width==length && height<length){
			translate([-length,-length,0]) cube(length*2);
		}
		if(width==length && height>length){
			translate([-height,-height,0]) cube(height*2);
		}
	}
	scale([sx,sy,1]) intersection(){
		sphere(r=height-2*wallthickness,$fn=fragments);
		if(width>length && width>height){
			translate([-width,-width,0]) cube(width*2);
		}
		if(length>width && length>height){
			translate([-length,-length,0]) cube(length*2);
		}
		if(height>length && height>width){
			translate([-height,-height,0]) cube(height*2);
		}
		if(width==length && height<length){
			translate([-length,-length,0]) cube(length*2);
		}
		if(width==length && height>length){
			translate([-height,-height,0]) cube(height*2);
		}
	}
}

```


[User]
Hey, so I've been messing around with this buckle design, and I think it could be a lot better if it were truly parametric and also a little more robust.

Right now, I've got this simple OpenSCAD file that makes a basic buckle, but it's kind of fragile and the parameters can easily break it if you're not careful. Basically, it's a rounded rectangle with two rectangular slots cut out of the middle.

The key parameters I'm using right now are: `buckle_width`, `slot_width`, `slot_height`, `thickness`, and `ovaltine`. `buckle_width` is the overall width of the buckle (and then divided by 2 to get the radius), `slot_width` is how long the slots are, `slot_height` is how wide they are, `thickness` is the thickness of the buckle and `ovaltine` adjusts how much it looks like a rounded rectangle (a 100 is a circle, and 0 is more like a flat racetrack). I'm subtracting two rectangular cubes from a cylinder to create the slots. The `bump` variable is a hack to make the holes go all the way through.

I'd like you to generate a parametric OpenSCAD file (or files, if that makes more sense) that has a much more robust approach. Instead of subtracting out simple cubes, how about we do something more tailored to a buckle? Like a proper "slot" that has rounded edges, and maybe a way to handle different buckle shapes? I also want to be able to adjust the gap between the slots, I'm using the same slot height twice which isn't great.

Ideally, I'd like to be able to define the following parameters:

*   **`buckle_width`**: Overall width of the buckle.
*   **`buckle_height`**: Overall height of the buckle. This would let me create more oval or even rectangular buckles, not just circles.
*   **`buckle_thickness`**: Thickness of the buckle.
*   **`slot_width`**: Width of each slot.
*  **`slot_height`**: Height of each slot.
*   **`slot_gap`**: The distance between the two slots.
*   **`slot_corner_radius`**: Radius of the corners of the slots.
*   **`buckle_corner_radius`**: Radius of the outer corners of the buckle.
*   **`slot_offset_from_center`**: This will control how far the slots are offset from the center of the buckle.
    *   I'd like to be able to move both the entire slot group up and down.

It would be great if you could use the `round()` function in your design to create rounded corners and make it look more finished. I'd also like to use some libraries, specifically the BOSL library for the `round` function, so I don't have to figure it out myself. It'd also be great if I could export it as an STL, so that when I make changes, I can get a new STL for my printer.

[Assistant]
buckle.scad:
```
$fs=0.35; $fa=1;

//Adjustment for making holes go all the way
bump=.1;

//Width of the actual buckle [mm]
buckle_width=24;//mm
buckle_radius=buckle_width/2;
//Width of the slot, long way [mm]
slot_width  =15;//mm
//Height of the slot, short way [mm]
slot_height = 3;//mm
//Thickness of the buckle [mm]
thickness   = 2;//mm
//How close to a circle should the buckle be?
ovaltine=70; // [02:100]

difference(){
scale([1,ovaltine/100,1])
cylinder(r=buckle_radius,h=thickness);

translate([-slot_width/2,slot_height-slot_height/2,-bump])
cube([slot_width,slot_height,thickness+2*bump]);

translate([-slot_width/2,-slot_height-slot_height/2,-bump])
cube([slot_width,slot_height,thickness+2*bump]);

}
```


[User]
Okay, so I'm looking to create a customizable phone holder for my bicycle handlebars. I've got some ideas on how I want it to work, and I'd like to use OpenSCAD so I can tweak it for different phones and handlebars.

Here's the gist: The design should consist of two main parts: a vertical piece that cradles the phone along its length, and a horizontal piece that clamps onto the handlebar. The phone sits between the two parts, and the horizontal piece has a semi-circular cutout to fit the handlebar. I’d like this to be parametric, so I can easily change things like the phone's dimensions, the handlebar diameter, and the overall height of the holder.

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

*   **`Phone_Length`**: The length of the phone.
*   **`Phone_Width`**: The width of the phone.
*   **`Phone_Thickness`**: The thickness of the phone.
*   **`Vertical_Offset`**:  Allows shifting the phone up or down vertically. Useful for avoiding side buttons. Positive shifts the phone up, negative down.
*   **`Dual_Vertical`**:  A boolean (0 or 1) to allow for two vertical pieces instead of one. This could be helpful if I want to plug in a charging cable.
*   **`Grip`**: Adjusts the height of the top catch on the vertical piece to improve phone grip. A higher number means more grip, but makes it harder to insert/remove the phone.
*   **`Swap_Catches`**: A boolean (0 or 1) that lets me swap the catch styles on the vertical and horizontal pieces. When set, the vertical part gets the "hook" and the horizontal part gets the straight catch. This will also affect which part is considered the vertical piece for the `Dual_Vertical` option.
*   **`Handle_Bar_Diameter`**: The diameter of the handlebar.
*   **`Holder_Height`**: The distance from the handlebar to the back of the phone. I need to control this to make the profile lower.

The design should prioritize being easy to 3D print. That means minimal overhangs and zero bridges would be great. The current design also uses a rounded corner function, so it should have something similar for the corners on the vertical piece.

I think that about covers it. I'm looking forward to seeing what you can come up with! I don’t have any requirements for specific libraries to use, but standard OpenSCAD functions should be more than enough for this design.

[Assistant]
Phone_Holder_v5.scad:
```
// Depending on your printer, you should add an extra 1 to 2 mm.
Phone_Length=145;
// Depending on your printer, you should add an extra 1 to 2 mm.
Phone_Width=72;
// Depending on your printer, you should add an extra 1 to 2 mm.
Phone_Thickness = 8.3;
// Offset the phone vertically. This is useful if your phone have side buttons at the middle that is blocked by the side grip. A positive value will shift the phone upwards, while a negative value shifts it downwards.
Vertical_Offset = 0;
// Allow you to attach two vertical pieces instead of one. This can be useful if you want to charge your phone while it's in the holder. This option is affected by the Swap_Catches option.
Dual_Vertical = 0; // [1:True, 0:False]
// Trade off between improved grip and ease of insertion/removal. Increasing this number will increase height of the top catch, improving grip but making it harder to remove the phone. The default should be fine for most cases.
Grip = 0;
// Swap the vertical and horizontal catches. Use this if you need to mount the holder on a horizontal bar. This option will affect which part is considered the vertical piece for the Dual_Vertical option.
Swap_Catches = 0; // [1:True, 0:False]

// Diameter of the bar where the holder is to be mounted.
Handle_Bar_Diameter = 35;
// Distance from the handle bar to the back of the phone. A smaller number will give a lower profile.
Holder_Height = 17; // [11:20]

/* [Hidden] */
$fs = 0.5;
$fa = 6;

module copy_mirror(vec=[0,1,0]) {
 union() {
  children();
  mirror(vec) children();
 }
};

module rounded_corner(vec=[0,0,0],rot=0) {
 translate(vec) rotate([0,0,rot]) difference(){
  intersection(){
   cylinder(r=6.5,h=5);
   translate([-6.5,0,0]) cube([6.5,6.5,5]);
  };
  cylinder(r=1.5,h=5);
 };
};

// Vertical Piece
//translate([2.5,0,0]) rotate([0,-90,0]) difference(){
difference(){
 union() {
  translate ([0,Vertical_Offset,0]) union(){
   copy_mirror([0,1,0]) rounded_corner([18.5,Phone_Length/2-1.5,0]);
   translate([12,-Phone_Length/2+1.5,0]) cube([5,Phone_Length-3,5]);
   if (Swap_Catches == 0) {
    translate([18.5,Phone_Length/2,0]) cube([Phone_Thickness/2+Grip,5,5]);
    translate([18.5+Phone_Thickness/2+Grip,Phone_Length/2+2.5,0]) cylinder(r=2.5,h=5);
    translate([18.5,-Phone_Length/2-5,0]) cube([Phone_Thickness/2+1,5,5]);
    translate([19.5+Phone_Thickness/2,-Phone_Length/2-2.5,0]) cylinder(r=2.5,h=5);
   } else {
    copy_mirror([0,1,0]) {
     translate([18.5,Phone_Length/2,0]) cube([Phone_Thickness-3,5,5]);
     rounded_corner([17+Phone_Thickness-1.5,Phone_Length/2-1.5,0],-90);
     translate([17+Phone_Thickness+1.5,Phone_Length/2-1.5,0]) cylinder(r=1.5,h=5);
     translate([17+Phone_Thickness+5-1.5,Phone_Length/2-1.5,0]) cylinder(r=1.5,h=5);
     translate([17+Phone_Thickness+1.5,Phone_Length/2-3,0]) cube([1.5,2,5]);
    }
   }
  };
  linear_extrude(height=5) polygon([[12,-39],[12,39],[10.3923,33],[0,15],[0,-15],[10.3923,-33]]);
 };
 copy_mirror([0,1,0]) translate([0,39,0]) cylinder(r=12,h=5);
 if (Dual_Vertical == 1 && Swap_Catches == 1) {
    copy_mirror([0,1,0]) translate([9,14.5,0]) cube([5,10,5]);
    copy_mirror([0,1,0]) translate([17-Holder_Height,-5.5/2+8,0]) cube([Holder_Height/2+0.2,5.5,5]);
 } else {
    copy_mirror([0,1,0]) translate([9,12.5,0]) cube([5,10,5]);
    translate([17-Holder_Height,-5.5/2,0]) cube([Holder_Height/2+0.2,5.5,5]);
 }
 translate([-Holder_Height,-30,0]) cube([17,60,5]);
};

// Horizontal Piece
//translate([0,2.5,0]) rotate([90,0,0]) copy_mirror([1,0,0]) difference(){
translate([-20 - Phone_Thickness,0,0]) rotate([0,0,-90]) difference(){
 union(){
  copy_mirror([1,0,0]) {
   linear_extrude(height=5) polygon([[0,-3],[10,-3],[18.84,10.4],[21.5,12],[Phone_Width/2-1.5,12],[Phone_Width/2-1.5,17],[0,17]]);
   rounded_corner([Phone_Width/2-1.5,18.5,0],180);
  }
  if (Swap_Catches == 0) {
   copy_mirror([1,0,0]) {
    translate([Phone_Width/2,18.5,0]) cube([5,Phone_Thickness-3,5]);
    rounded_corner([Phone_Width/2-1.5,17+Phone_Thickness-1.5,0],-90);
    translate([Phone_Width/2-1.5,17+Phone_Thickness+1.5,0]) cylinder(r=1.5,h=5);
    translate([Phone_Width/2-1.5,17+Phone_Thickness+5-1.5,0]) cylinder(r=1.5,h=5);
    translate([Phone_Width/2-3,17+Phone_Thickness+1.5,0]) cube([1.5,2,5]);
   }
  } else {
    translate([Phone_Width/2,18.5,0]) cube([5,Phone_Thickness/2+Grip,5]);
    translate([Phone_Width/2+2.5,18.5+Phone_Thickness/2+Grip,0]) cylinder(r=2.5,h=5);
    translate([-Phone_Width/2-5,18.5,0]) cube([5,Phone_Thickness/2+1,5]);
    translate([-Phone_Width/2-2.5,19.5+Phone_Thickness/2,0]) cylinder(r=2.5,h=5);
  }
 }
 copy_mirror([1,0,0]) {
  translate([21.5,9,0]) cylinder(r=3,h=5);
  translate([0,-Handle_Bar_Diameter/2-Holder_Height+17,0]) cylinder(r=Handle_Bar_Diameter/2,h=10);
  if (Dual_Vertical == 1 && Swap_Catches == 0) {
    translate([-5.5/2+8,17-(Holder_Height/2+0.2),0]) cube([5.5,Holder_Height/2+0.2,5]);
  } else {
    translate([-5.5/2,17-(Holder_Height/2+0.2),0]) cube([5.5,Holder_Height/2+0.2,5]);
  }
 }
};

```


[User]
I need a parametric plant pot generator. I've got some basic ideas, but I'm hoping you can make something really flexible.

Here's what I'm thinking:

*   **Overall Shape:** I like the general shape of a cylinder with a slightly flared top, kind of like a classic flowerpot. I'd like the flare to be adjustable though, not just a fixed proportion of the height.

*   **Parameters:**
    *   `height`: The total height of the pot.
    *   `bottom_radius`: Radius of the base of the pot.
    *   `top_radius`: Radius at the very top of the flared portion.
    *   `flare_start_height`: The height at which the flare begins.
    *   `wall_thickness`: Thickness of the pot wall.
    *   `drain_hole`: A boolean (true/false) to include a drainage hole.
    *   `drain_hole_radius`: Radius of the drainage hole.
    *   `resolution`: Controls the fineness of the curves of the model.

*   **Construction:**
    *   The pot should be hollow. Use a difference operation to create this.
    *   The flared top should transition smoothly, I'd prefer a linear transition.
    *   The drainage hole should be at the center of the base if enabled.

*   **Output:** I'd like a single `.scad` file to generate the plant pot. Please also make sure all parameters have reasonable default values and include comments in the code explaining what each parameter controls.

I think that should give you a good starting point. Let me know if anything is unclear or if you need more information. I'm really looking forward to seeing what you come up with!

[Assistant]
Plant.Pot.scad:
```
// variables
size = 100; // [50:S,100:M,150:L]
wallthickness = 2; // [1:S,2:M,3:L]
hole = 1; // [1:Yes,0;No]
resolution = 100; // [100:rough,150:middle,200:fine]

// model
difference(){
	difference(){
		union(){
			translate([0,0,0])cylinder(h = size, r1 = size/2, r2 = size*1.2/2, $fn = resolution);
			translate([0,0,size*0.85])cylinder(h = size*0.15, r1 = size*1.28/2, r2 = size*1.3/2, $fn = resolution);
		}
		translate([0,0,wallthickness])cylinder(h = size-wallthickness, r1 = (size-2*wallthickness)/2, r2 = (size-2*wallthickness)*1.2/2, $fn = resolution);
	}
	if(hole==1){
		cylinder(h = wallthickness, r1 = size*0.08, r2 = size*0.08, $fn = resolution);
	}
}

```


[User]
I'd like to design a parametric plant pot coaster. I'd like the coaster to be a circular disc with a lip, and I want to be able to adjust its overall size using a single parameter. Let's call that parameter `size`. I'm thinking I want three different options for `size`, which would roughly correspond to small, medium, and large sizes – maybe `size = 50`, `size = 100`, and `size = 150`.

I also want to be able to control the thickness of the wall, meaning the lip that sticks up from the base. I think this would be controlled with another parameter, maybe `wallthickness`. Similar to the sizes, I'd like a few options here – something like `wallthickness = 1`, `wallthickness = 2`, and `wallthickness = 3`.

Finally, I want to control the smoothness of the curved edges, so I need to be able to control `$fn`. I'm thinking I want low, medium, and high options for the resolution, so we could represent these options with values `100`, `150`, and `200` passed to `$fn`.

Lastly, I want to include a design element in the coaster. I want 6 small, rectangular supports around the inside lip of the coaster, evenly spaced. All supports are to be the same dimensions and the same height as the inner wall.

Could you generate an OpenSCAD file that can handle these parameters?

[Assistant]
Plant.Pot.Coaster.scad:
```
// variables
size = 100; // [50:S,100:M,150:L]
wallthickness = 2; // [1:S,2:M,3:L]
resolution = 100; // [100:rough,150:middle,200:fine]

// model coaster
union(){
	difference(){
		translate([0,0,0])cylinder(h = size*.1, r1 = size*1.15/2, r2 = size*1.2/2, $fn = resolution);
		translate([0,0,wallthickness])cylinder(h = size-wallthickness, r1 = (size-2*wallthickness)*1.15/2, r2 = (size-2*wallthickness)*1.2/2, $fn = resolution);
	}
	union(){
		rotate([0,0,0]) translate([0,15,wallthickness]) cube([wallthickness,size*0.30,wallthickness]);
		rotate([0,0,60]) translate([0,15,wallthickness]) cube([wallthickness,size*0.30,wallthickness]);
		rotate([0,0,120]) translate([0,15,wallthickness]) cube([wallthickness,size*0.30,wallthickness]);
		rotate([0,0,180]) translate([0,15,wallthickness]) cube([wallthickness,size*0.30,wallthickness]);
		rotate([0,0,240]) translate([0,15,wallthickness]) cube([wallthickness,size*0.30,wallthickness]);
		rotate([0,0,300]) translate([0,15,wallthickness]) cube([wallthickness,size*0.30,wallthickness]);
	}
}

```


[User]
Hey, I'm looking to get a funnel designed in OpenSCAD. I've got some specific needs for the sizes and wall thicknesses, and I'd like it to be parametric so I can easily change them later.

Basically, the funnel is going to have a sort of cone-shaped main body and then a smaller, tapered neck. I'm thinking the main body will have a height of 60% of a base `size` variable, and the neck will have a height of 40% of that same `size` variable. The main cone will have a top radius equal to half of the `size` and will taper down to 15% of `size` at the point it transitions to the neck. The neck will then go down to 10% of size at its narrowest point.

I also want to add three angled supports that are part of the main cone - these will look a bit like fins or gussets. They should start at the base of the cone and connect to a point about 12% of the size up from the main base of the cone. They should have a small width (maybe 1 or 1.2 units), and a depth of 1 unit, and run from the very bottom of the model to the transition point with the neck. These should be evenly spaced around the cone - like at 0, 120, and 240 degrees.

The funnels themselves should be hollow. I'd like to control the wall thickness. So the funnel should be generated by using `difference()` to subtract an inner cone and inner neck from the solid cone and neck.

I need to be able to specify the base `size` as one of four values: 50, 100, 150 or 200.  I would also need the `wallthickness` to have values of either 0.5, 1, or 1.5. Finally, I'd like to specify a resolution of the circles - could you add a `$fn` variable that lets me change that? I'm thinking 100, 150, and 200 as good options.

Could you generate the OpenSCAD code for this? I'm not using any extra libraries, so you shouldn't need to worry about that.

[Assistant]
Funnel.scad:
```
// variables
size = 100; // [50:S,100:M,150:L,200:XL]
wallthickness = 1; // [0.5:S,1:M,1.5:L]
resolution = 100; // [100:rough,150:middle,200:fine]

// model
union(){
	difference(){
		union(){
			translate([0,0,0])cylinder(h = size*0.6, r1 = size/2, r2 = size*0.15/2, $fn = resolution);
			translate([-0.5,-0.6,0]) translate([0,size*0.12,0]) rotate([1/tan(size*0.1/(size*0.4)*180/PI),0,0]) cube([1,1.2,size]);
			rotate([0,0,120]) translate([-0.5,-0.6,0]) translate([0,size*0.12,0]) rotate([1/tan(size*0.1/(size*0.4)*180/PI),0,0]) cube([1,1.2,size]);
			rotate([0,0,240]) translate([-0.5,-0.6,0]) translate([0,size*0.12,0]) rotate([1/tan(size*0.1/(size*0.4)*180/PI),0,0]) cube([1,1.2,size]);
		}
		translate([0,0,0])cylinder(h = size*0.6, r1 = (size)/2-wallthickness, r2 = (size)*0.15/2-wallthickness, $fn = resolution);
	}
	difference(){
		translate([0,0,size*0.6])cylinder(h = size*0.4, r1 = size*0.15/2, r2 = size*0.1/2, $fn = resolution);
		translate([0,0,size*0.6])cylinder(h = size*0.4, r1 = (size)*0.15/2-wallthickness, r2 = (size)*0.1/2-wallthickness, $fn = resolution);
	}
}
```


[User]
I need an OpenSCAD design for a lens hood. It should be cylindrical with a brim at both ends, and have mounting holes around the base. I'd like it to be fully parametric. Here's the specific breakdown of what I need:

**Overall Shape:**

*   It's a cylindrical lens hood.
*   It should have a consistent wall thickness.
*   It should have a brim extending outwards at both the front and back ends.

**Dimensions (all should be parameters):**

*   `length`: Overall length of the cylindrical portion.
*   `innerDiameter`: The inside diameter of the cylinder (where the lens would go).
*   `wallThickness`: Thickness of the cylinder wall.
*   `brimThickness`: Thickness of the brim.
*   `brimLength`: Length that the brim extends outwards.

**Mounting Holes:**

*   There should be a set of mounting holes around the base of the cylinder.
*   `holeDiameter`: Diameter of the mounting holes.
*   `holeOffset`: How far the hole is offset from the ends.
*   `numberOfHoles`: Number of holes around the base.
*  `topHoles`: Whether there are holes at the top too, or not. If it's zero, there should only be holes at the bottom. If it is 1, the holes at the bottom should be duplicated at the top.

**Other:**

*   I'd like to be able to specify the resolution of the model with a variable.
*   I'd prefer not to have to rely on any external libraries for this simple design.

I'm looking for a single `.scad` file. I'd like the code to be easy to read and understand.

[Assistant]
lenshood_03.scad:
```
length=4;
InnerDiameter=4;
radius=InnerDiameter/2;
//If wallThickness is larger than brimThickness than there will not be a brim.
wallThickness=0.1;
brimThickness=0.2;
brimLength=0.75;
//These holes were put in to be tapped. This is the mounting mechanism. Set holeDiameter to 0.0 if you do not want them.
holeDiameter=.09375;
holeOffset=.2;
numberOfHoles=4;
//Set to 0 if you do not want holes at the top of the lens hood. These were put in as a plan B should the holes at the bottom strip.
topHoles=1;
//Resolution
res=50;

difference()
{
	union()
	{
	cylinder(r=radius+wallThickness,h=length,$fn=res);
	cylinder(r=radius+brimThickness,h=brimLength,$fn=res);
	translate([0,0,length-brimLength])cylinder(r=radius+brimThickness,h=brimLength,$fn=res);
	translate([0,0,length-brimLength-brimThickness])
	cylinder(r=radius,r2=radius+brimThickness,h=brimThickness,$fn=res);
	translate([0,0,brimLength])
	cylinder(r=radius+brimThickness,r2=radius,h=brimThickness,$fn=res);
	}
	for(k=[0:topHoles])
	translate([0,0,k*(length-holeOffset*2)])
		{
		for(i=[1:numberOfHoles])
		rotate([0,0,i*360/numberOfHoles])
		translate([k*(radius+0.05),0,holeOffset])rotate([0,90,0])
		cylinder(h=radius+brimThickness+0.1,r=holeDiameter/2,$fn=res/3);
		}
	translate([0,0,-0.1])cylinder(r=radius,h=length+0.2,$fn=res);
}
```


[User]
I'd like to design a customizable hook, kind of like a towel hook or a drawer knob. I have an existing design, but it's not very flexible, and I want something that is easier to modify.

The basic shape of the hook will be built using cylinders, and I'll need to control a few key parameters.

First, there's a central cylinder, which I'll call the "middle". I need to be able to control its diameter using `middlediameter`, and I should be able to set a range for this from 20 to 100.

Then, I want to create two tapered sections attached to the middle cylinder - one at the back, and one at the front. The back should use `backdiameter` (range: 40 to 200) and the front, `frontdiameter` (range: 30 to 150). The tapers will be made using multiple small cylinders.

I also need a `with_hole` parameter (boolean, 1 for yes, 0 for no) that lets me cut a hole through the center of the whole hook. If I want a hole, I'd like to control its diameter using `hole`. The values I'd like to be able to choose are 5, 6, 7 and 9 for the hole.

Additionally, I want to be able to add a chamfer or countersink around the front of the hole. This will be controlled using `with_fase_front` (boolean), and if active, the dimensions will be determined by `fase`. Allowed values are 10, 12, 15, and 20.

Finally, let's add a `resolution` setting which will allow me to adjust the smoothness of the curves. I'd like to specify this as 10 for rough, 25 for middle and 75 for fine.

I’d like all these parameters to be configurable from the OpenSCAD customizer, so please use variables at the beginning. Also, use a `function radius` to help create the tapered sections as it is more flexible.

Could you please provide the necessary OpenSCAD code for this? I'm not using any libraries currently.

[Assistant]
Hook.scad:
```
// variables
middlediameter = 20; // [20:100]
backdiameter = 50; // [40:200]
frontdiameter = 30; // [30:150]
with_hole = 0; // [1:Yes,0:No]
hole = 5; // [5,6,7,9]
fase = 8; // [10,12,15,20]
with_fase_front = 0; // [1:Yes,0:No]
resolution = 25; // [10:rough,25:middle,75:fine]

back = backdiameter/middlediameter*10;
front = frontdiameter/middlediameter*10;

function radius(i, x) = x/(x*x)*(i*i)+x/4;
// model
difference(){
	union(){
		for ( i = [back : -1 : 1] ){
			translate([0,0,middlediameter/3/back*(back-i)]) cylinder(h = middlediameter/3/back, r1 = radius(i, 2*middlediameter), r2 = radius(i, 2*middlediameter), $fn = resolution);
		}
		translate([0,0,middlediameter/3]) cylinder(h = middlediameter/2, r1 = middlediameter/2, r2 = middlediameter/2, $fn = resolution);
		for ( i = [front : -1 : 1] ){
			translate([0,0,middlediameter/3/front*i+middlediameter/3*2]) cylinder(h = middlediameter/3/front, r1 = radius(i, 2*middlediameter), r2 = radius(i, 2*middlediameter), $fn = resolution);
		}
	}
	if(with_hole==1){
		cylinder(h = middlediameter*2, r1 = hole/2, r2 = hole/2, $fn = resolution);
	}
	if(with_hole==1 && with_fase_front==1){
		cylinder(h = (fase-hole)/2, r1 = fase/2, r2 = hole/2, $fn = resolution);
	}
}
```


[User]
Hi, I'm looking to create a customizable dice tower with some specific features, and I'd like your help designing the OpenSCAD files.  I've used an existing design as a base, but want to make some key modifications, and make it easier to customize.

The core of the tower should be based on a series of ramps, stacked to direct dice downwards.  I need to be able to adjust the *ramp_width*, the *wall* thickness of the ramp walls, and the *slope* of the ramps, as well as the *exit_slope* of the final ramp. The ramps themselves have a specific structure -- a sloped surface with walls on the sides and an end.

Each level has a specific height, based on the ramp's slope and width. There's also some trimming that happens on the lower edge of each ramp, to make the assembly fit together correctly.

The overall tower will consist of four ramp sections, each rotated 90 degrees from the previous one, and stacked on top of each other. Then there's a mirrored set of that, creating two sets of four ramps stacked next to each other.

Here are the features I want, building upon that core structure:

1.  **Base/Footing:** There should be a base at the very bottom to give the tower some stability. It should be a rectangular shape slightly larger than the footprint of the tower, with rounded corners. This "footing" should extend slightly beyond the base of the ramp structure.

2.  **Filled Exit Ramp:** The bottom of the exit ramps shouldn't have a large gap. I'd like this area to be filled in with a curved surface that blends into the base of the tower and extends somewhat past the edges of the main tower structure, both for aesthetic and practical reasons (I found that a steep ramp at the bottom didn't print well with ABS).

3.  **Rounded Funnel:** Instead of a square funnel entrance on top, I would like a rounded entrance. It should also be slightly larger than the main body of the tower.

4. **Extended Divider:** There should be a divider on top of the funnel, and I'd like it to be tall enough to really keep dice from jumping out.

5.  **Folding Catch Trays:** This is the trickiest part. I want two catch trays that can be attached to the sides of the tower. These trays should be hinged, so they can fold up against the sides of the tower for storage. I want these trays to attach at hinge points on the side of the tower, and I need the trays to have catches that snap into the holes that act as hinge points. These trays will have walls on the side and a curved area in one corner.

I need the whole thing to be easily scalable as well, so everything should be parametric. I was thinking a good approach would be to create one file for the tower itself, and another file for the catch trays. Then the parameters could be set independently for the two different files, and the scaling of each could be adjusted separately to allow for different sizes. Also, the hinges and catches must match up exactly, so some common variables must be shared between both .scad files.

I'm familiar with some basic OpenSCAD, but I'm not sure how best to approach the more complex shapes and calculations, especially for the curved and hinged pieces. I'd really appreciate it if you could provide a design that includes all of these features, in two or more separate SCAD files. I'm not using any external libraries, so just use standard OpenSCAD commands. Thanks in advance for your help!

[Assistant]
rect-custom_dice_tower_v3.scad:
```
//display catch tray
displaytray = 1;
//display tower
displaytower = 0;

root_2 = sqrt(2);

// the slope of the ramps
slope = 40;	//[15:75]

// the slope of the final ramp
exit_slope = 27;    // [15:75]

// the width of the ramp walls
wall = 2; // [1:5]

// the distance between the outer edge of walls of the ramp
ramp_width = 30; //[10:70]

// the overhang amount on the top funnel
overhang=7;	// [0:10]

// the total width of the entire structure
// wall/2 + ramp_width + ramp_width + wall/2
total_width = wall + ramp_width*2;

// height of each level
level_height = (ramp_width-wall)*tan(slope);

// trim the lower edge of each ramp to fit into the one below
trim=(wall/sin(slope) - wall)*tan(slope);

//echo("level height : ", level_height);
//echo("4 levels high: ", level_height*4);

module ramp(corner=true, angle=slope, cut_top=true){
	translate([-wall/2,-wall/2,0])
		union(){
			intersection() {
				translate([0,0,ramp_width*tan(angle) - wall/cos(angle)])
					rotate([0,angle,0])
					 translate([-ramp_width*2,0,0])
						difference(){
							cube([ramp_width*5,ramp_width,ramp_width]);
							translate([-ramp_width,wall,wall]) cube([ramp_width*6,ramp_width-wall*2, ramp_width]);
						}
				if(cut_top==true){
					translate([0,0,-trim]) cube([ramp_width,ramp_width,(ramp_width-wall)*tan(angle)+trim]);
				} else {
					translate([0,0,-trim]) cube([ramp_width,ramp_width,ramp_width*tan(exit_slope)+level_height]);
					// add
				}
			}
			if (corner== true){
				translate([0,0,level_height])
				 difference(){
					cube([ramp_width,ramp_width,level_height]);
					translate([wall,-wall,-ramp_width])	cube([ramp_width,ramp_width,ramp_width*2]);
				}
			}
		}
}

module exit_ramp(){
	ramp(false,exit_slope, false);
//	translate([-wall/2,-wall/2,0]) cube([ramp_width,wall,level_height]);
//	translate([-wall/2,ramp_width-wall*3/2,0]) cube([ramp_width,wall,level_height]);
}

module tower(){
	union(){
		ramp();
		translate([ramp_width-wall,wall-ramp_width,(ramp_width-wall)*tan(slope)])
			rotate(90)
				ramp();
		translate([(ramp_width-wall)*2,0,(ramp_width-wall)*tan(slope)*2])
			rotate(180)
				ramp();

		translate([(ramp_width-wall),ramp_width-wall,(ramp_width-wall)*tan(slope)*3])
			rotate(270)
				ramp(false);
	}
}

if (displaytower == 1 ) {
translate([0,0,wall + (ramp_width-wall)*tan(exit_slope)])
union(){
	tower();
	translate([(ramp_width-wall)*2,0,0]) rotate([0,0,180]) tower();
	translate([ramp_width-wall,0,level_height*4]) funnel();
}

// base:
translate([-wall/2,-ramp_width+wall/2,0]) cube([ramp_width*2 - wall,ramp_width*2 -wall,wall]);

// added upper rib  - GAC
difference() {
translate ([27, -35, 110]) cube (size = [wall, 70, 6]);
translate ([25, -32, 100]) rotate (a = [45, 0, 0]) cube (size = [10, 10, 15]);
translate ([25, 24, 106]) rotate (a = [-47, 0, 0]) cube (size = [10, 10, 15]);
}

// added new base  - GAC
hull () {
	translate ([58/2-1, 0, 0]) cube (size = [58, 58, 1], center = true);
	hull () {
		translate ([-1, 58/2-1, -4]) cylinder (h = 2, d = 16, $fn = 30);
		translate ([-1, -58/2+1, -4]) cylinder (h = 2, d = 16, $fn = 30);
		translate ([58-1, 58/2-1, -4]) cylinder (h = 2, d = 16, $fn = 30);
		translate ([58-1, -58/2+1, -4]) cylinder (h = 2, d = 16, $fn = 30);
	}
}

// added curved funnel top  - GAC
difference() {
	hull () {
		translate ([58/2-1, 0, 108.6]) cube (size = [55, 55, 1], center = true);
		hull () {
			translate ([-1, 58/2-1, 115]) cylinder (h = 2, d = 16, $fn = 30);
			translate ([-1, -58/2+1, 115]) cylinder (h = 2, d = 16, $fn = 30);
			translate ([58-1, 58/2-1, 115]) cylinder (h = 2, d = 16, $fn = 30);
			translate ([58-1, -58/2+1, 115]) cylinder (h = 2, d = 16, $fn = 30);
		}
	}

	translate ([0, 0, 3.25]) hull () {
		translate ([58/2-1, 0, 110]) cube (size = [54, 54, 1], center = true);
		hull () {
			translate ([-1, 58/2-1, 115]) cylinder (h = 2, d = 16, $fn = 30);
			translate ([-1, -58/2+1, 115]) cylinder (h = 2, d = 16, $fn = 30);
			translate ([58-1, 58/2-1, 115]) cylinder (h = 2, d = 16, $fn = 30);
			translate ([58-1, -58/2+1, 115]) cylinder (h = 2, d = 16, $fn = 30);
		}
	}

	translate ([58/2-1, 0, 110]) cube (size = [54, 54, 10], center = true);

}

// exit ramps with hinge point  - GAC
difference() {
	translate([ramp_width-wall,0,wall]) exit_ramp();
	translate ([59-2-8, 40, 8+8]) rotate (a = [90, 0, 0]) cylinder (h = 50, d = 6, $fn = 30);
}
difference() {
	translate([ramp_width-wall,0,wall]) rotate([0,0,180]) exit_ramp();
	translate ([-1+8, 10, 8+8]) rotate (a = [90, 0, 0]) cylinder (h = 50, d = 6, $fn = 30);
}

// fill in the area at the bottom of the exit ramps  - GAC
hull () {
	translate ([58/2-1, 29, 15]) rotate (a = [90, 0, 0]) cylinder (h = 58, d = 1, $fn = 30);
	translate ([58/2-1, 0, 2]) cube (size = [58, 58, 1], center = true);
}

//catch for catch tray  -- new from first version posted
translate ([0, 0, 83.8-wall]) {
	hull () {
		translate ([59-2-0.5, 5, 8+8]) rotate (a = [90, 0, 0]) cylinder (h = 10, d = 1, $fn = 30);
		translate ([59-2-0.5, 5, 8+3]) rotate (a = [90, 0, 0]) cylinder (h = 10, d = 1, $fn = 30);
		translate ([59-2-0.5+4, 5, 8+8]) rotate (a = [90, 0, 0]) cylinder (h = 10, d = 1, $fn = 30);
	}
	hull () {
		translate ([59-2-0.5+4, 5, 8+8+0.6]) rotate (a = [90, 0, 0]) cylinder (h = 10, d = 1, $fn = 30);
		translate ([59-2-0.5+4, 5, 8+8]) rotate (a = [90, 0, 0]) cylinder (h = 10, d = 1, $fn = 30);
	}
}
// and the other side
translate ([59-2-0.5, 0, 0]) rotate (a = [0, 0, 180]) translate ([0, 0, 83.8-wall]) {
	hull () {
		translate ([59-2-0.5, 5, 8+8]) rotate (a = [90, 0, 0]) cylinder (h = 10, d = 1, $fn = 30);
		translate ([59-2-0.5, 5, 8+3]) rotate (a = [90, 0, 0]) cylinder (h = 10, d = 1, $fn = 30);
		translate ([59-2-0.5+4, 5, 8+8]) rotate (a = [90, 0, 0]) cylinder (h = 10, d = 1, $fn = 30);
	}
	hull () {
		translate ([59-2-0.5+4, 5, 8+8+0.6]) rotate (a = [90, 0, 0]) cylinder (h = 10, d = 1, $fn = 30);
		translate ([59-2-0.5+4, 5, 8+8]) rotate (a = [90, 0, 0]) cylinder (h = 10, d = 1, $fn = 30);
	}
}
} // if display tower

if (displaytray == 1 ) {
translate ([59-2-8, 0, +8+8]) rotate ([0, -0, 0]) translate ([-59+2+8, 0, -8-8])  {
	// catcher?
	difference() {
		union () { // bottom and basic walls
			translate ([55.25+5, 58/2, -4]) cube (size = [65, wall, 12]);
			translate ([55.25+11, -58/2, -4]) cube (size = [59, wall, 12]);
			translate ([65.25, -58/2, -4]) cube (size = [60, 58, wall]);
		} // union
		// subtract the tower base, slightly enlarged
		scale (v = [1.01, 1.02, 1.02]) hull () {
			translate ([58/2-1, 0, 0]) cube (size = [58, 58, 1], center = true);
			hull () {
				translate ([-1, 58/2-1, -4]) cylinder (h = 2, d = 16, $fn = 30);
				translate ([-1, -58/2+1, -4]) cylinder (h = 2, d = 16, $fn = 30);
				translate ([58-1, 58/2-1, -4]) cylinder (h = 2, d = 16, $fn = 30);
				translate ([58-1, -58/2+1, -4]) cylinder (h = 2, d = 16, $fn = 30);
			} // hull
		} // scale hull
		// subtract out the corner
		translate ([73.5-4, -21.1-4, 0]) cube (size = [8, 8, 20], center = true);
	} // difference

	// and add in the corner circle
	intersection () {
		difference() {
		translate ([73.5, -21, -4]) cylinder (h = 12, d = 16, $fn = 30);
		translate ([73.5, -21, -2]) cylinder (h = 13, d = 12, $fn = 30);
		} // difference
		translate ([73.5-4, -21.1-4, -0]) cube (size = [8, 8, 20], center = true);
	} // intersection

	difference() {
		hull () {
			translate ([065.25+60, 58/2-6, -4]) cylinder (h = 12, d = 16, $fn = 30);
			translate ([065.25+60, -58/2+8, -4]) cylinder (h = 12, d = 16, $fn = 30);
		} // hull

		hull () {
			hull () {
				translate ([065.25+60, 58/2-6, -2]) cylinder (h = 12, d = 12, $fn = 30);
				translate ([065.25+60, -58/2+8, -2]) cylinder (h = 12, d = 12, $fn = 30);
			} // hull
			hull () {
				translate ([065.25+55, 58/2-6, -2]) cylinder (h = 12, d = 12, $fn = 30);
				translate ([065.25+55, -58/2+8, -2]) cylinder (h = 12, d = 12, $fn = 30);
			} // hull
		} // hull
		// slot for the catch
		translate ([59-2-0.5+4+70.75, 6, 4+.5]) rotate (a = [90, 0, 0]) #cylinder (h = 12, d = 1.3, $fn = 30);
	} // difference

	// add in the back wall
	translate ([65.5, -21.5, -4]) cube (size = [wall, 20, 12]);

	hull () {  // the arm that goes up to the hinge point
		translate ([59-2-8, 31, 8+8]) rotate (a = [90, 0, 0]) cylinder (h = 2, d = 8, $fn = 30);
		translate ([59-2+4.5, 31, 8-4.7]) rotate (a = [90, 0, 0]) cylinder (h = 2, d = 8, $fn = 60);
		translate ([59-2+12, 31, 8-4]) rotate (a = [90, 0, 0]) cylinder (h = 2, d = 8, $fn = 30);
	} // hull

	difference() { // needs some stuff subtracted out to clear the base
		hull () {  // the arm that goes up to the hinge point
			translate ([59-2-8, -1.2, 8+8]) rotate (a = [90, 0, 0]) cylinder (h = 2, d = 8, $fn = 30);
			translate ([59-2+4.5+1, -1.2, 8-4.7]) rotate (a = [90, 0, 0]) cylinder (h = 2, d = 8, $fn = 60);
			translate ([59+4, -1.2, 8-.5]) rotate (a = [90, 0, 0]) #cylinder (h = 2, d = 8, $fn = 30);
			translate ([59-2+12, -1.2, 8-8]) rotate (a = [90, 0, 0]) cylinder (h = 2, d = 8, $fn = 30);
			translate ([59-2+12, -1.2, 0]) rotate (a = [90, 0, 0]) #cylinder (h = 2, d = 8, $fn = 30);
		} // hull
		// subtract the tower base, slightly enlarged
		scale (v = [1.01, 1.02, 1.02]) hull () {
			translate ([58/2-1, 0, 0]) cube (size = [58, 58, 1], center = true);
			hull () {
				translate ([-1, 58/2-1, -4]) cylinder (h = 2, d = 16, $fn = 30);
				translate ([-1, -58/2+1, -4]) cylinder (h = 2, d = 16, $fn = 30);
				translate ([58-1, 58/2-1, -4]) cylinder (h = 2, d = 16, $fn = 30);
				translate ([58-1, -58/2+1, -4]) cylinder (h = 2, d = 16, $fn = 30);
			} // hull
		} // scale hull
		scale (v = [1.01, 1.02, 1.02])	translate ([58/2-1, 0, 0]) cube (size = [58, 58, 5], center = true);
	} // difference

	// hinge pins
	translate ([59-2-8, 31-1.5, 8+8]) rotate (a = [90, 0, 0]) cylinder (h = 3, d = 5.4, $fn = 30);
	translate ([59-2-8, 1.5, 8+8]) rotate (a = [90, 0, 0]) cylinder (h = 3, d = 5.4, $fn = 30);

	//translate ([59, 32, 0]) cylinder (h = 40, d = 1, $fn = 8);
	}
}

```


[User]
I'm looking to create a parametric expansion wedge, similar to a bicycle quill stem, for securing a bolt inside a tube. I've got some specific requirements in mind.

First, the wedge needs to have an outer diameter that's slightly smaller than the inner diameter of the tube it will be inserted into, and this should be a user-definable parameter. Similarly, the bolt hole (core) diameter should be customizable and slightly larger than the diameter of the bolt I intend to use. I also need a space for a nut, and so its diameter should be adjustable as well, sized slightly larger than the point-to-point measurement of the nut. Let's call those parameters `outer_diameter`, `core_diameter`, and `nut_diameter`.

The design should include a flared center hole to allow for some angular deflection when it is wedged inside of the tube. Think of the flair as being on the side that pushes against the bolt. It should also have a nut socket on the side that pushes against the nut. I'd like to be able to adjust the flare angle, too. Let's call that `flare_angle`. Also, let's add a `nut_seat` parameter which controls the depth of the nut socket.

The wedge should have two halves that are mirror images of each other so it can expand and press against the inside of the tube. I'd like to use a hull to accomplish this and a difference of cylinders and cubes, as in the example I provided.

I’d like the design to be such that the two faces that come together to form the wedge are oriented such that they would lie flat on the print bed during printing. This will make them smoother, which is important for good movement.

Finally, it needs to output two wedges: one with a nut socket and one without. Can you handle that?

[Assistant]
tubular_expansion_wedge.scad:
```

//Diameter of the wedge, make this slightly smaller than the inner diameter of your tube.
outer_diameter = 20;

//Diameter of the bolt hole, make this slightly larger than the diameter of your bolt.
core_diameter = 10;

//Diameter of the nut socket, make this slightly larger than the nut measured point to point (not the flats).
nut_diameter = 17.5;

/* [Hidden] */

flare_angle = 7;
nut_seat = 1.5;

outer_radius = outer_diameter / 2;
core_radius = core_diameter / 2;
nut_radius = nut_diameter / 2;
center_height = outer_radius + nut_diameter / 2;
double_height = center_height * 2;

module wedge(has_nut) {

	module flared_cyl() {

		module cyl(height) {
			translate([0, 0, -center_height]) {
				cylinder(r = core_radius, h = height, center = true);
			}
		}

		translate([0, 0, center_height]) {
			hull() {
				cyl(double_height);
				rotate([0, -flare_angle, 0]) {
					cyl(double_height + outer_radius);
				}
			}
		}
	}

	intersection() {
		translate([-double_height, -outer_radius, 0]) {
			cube([2 * double_height, outer_diameter, double_height]);
		}
		rotate([0, 45, 0]) {
			difference() {
				cylinder(r = outer_radius, h = double_height, center = true);
				flared_cyl();

				if (has_nut) {
					translate([0, 0, outer_radius + nut_seat]) {
						nut();
					}
				}

			}
		}
	}
}

module nut() {
	rotate([0, 0, 30]) {
		cylinder(r = nut_radius, h = center_height, $fn = 6, center = false);
	}
}

module main() {
	rotate([0, 0, -90]) {
		translate([0, outer_diameter + 2, 0]) {
			wedge(false);
		}

		wedge(true);
	}
}

if (core_diameter >= outer_diameter) {
	echo("core diameter must be less than outer diameter.");
} else if (nut_diameter >= outer_diameter) {
	echo("nut diameter must be less than outer diameter.");
} else if (core_diameter >= nut_diameter) {
	echo("core diameter must be less than nut diameter.");
} else {
	main();
}

```


[User]
Hey, I'm looking to get some custom measuring cups designed in OpenSCAD. I found this thing online but it doesn't really meet my specific needs and I'd rather have a fresh start. It was called "Measuring Cup" and used a couple of libraries called `write/Write.scad` which I believe is a custom library, not a standard one.

I need a parametric design that allows me to specify the volume in milliliters and the design will scale to that volume. I'll also need to specify the unit of measurement, which will let me switch between ml, cubic inches, imperial fluid ounces, and US fluid ounces. I need the ability to add two lines of text to the cup for labeling. And the ability to adjust the font, font size and extrusion thickness for both lines.

The cup should have a more modern, rounded shape. The original design had a kind of bulbous shape with a handle. It would be great to have the option of having a handle, or not. And when the handle is on, it should be smooth and integrated with the overall shape, not just tacked on. It's important that the walls are thick enough to be durable, so having a parameter to control that is essential. I would like to be able to provide a wall thickness parameter that is then scaled with the overall volume.

Finally, it would be helpful if the design could also generate a model of the interior volume, for checking the dimensions. But this should be optional to avoid any unnecessary computational overhead.

I guess that's it for now. Let me know if you need more info.

[Assistant]
measuring_cup.scad:
```
// 'Measuring Cup' Version 1.0 by wstein
// is licensed under the Attribution - Non-Commercial - Share Alike license.
// (c) December 2014
// please refer the complete license here: http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode

use <write/Write.scad>

/* [Size] */
// unit of measurement
unit=1.0; // [1.0:ml, 16.387064:cubic inch (international inch), 28.4130625:imperial fluid ounce (Imp.fl.oz.), 29.5735295625: US fluid ounce (US fl.oz.)]

// capacity of the cup
volume=100;

label1_text="";
label2_text="";

/* [Font] */

// default: 1.5
label_thickness = 1.5;

//default: 8.0
label1_height = 8.0;

//default: orbitron.dxf
label1_font="orbitron.dxf"; //[orbitron.dxf,Letters.dxf,knewave.dxf,BlackRose.dxf,braille.dxf]

//default: 8.0
label2_height = 8.0;

//default: orbitron.dxf
label2_font="orbitron.dxf"; //[orbitron.dxf,Letters.dxf,knewave.dxf,BlackRose.dxf,braille.dxf]

/* [Advanced] */

// If the printed size does to much differ, you can adjust here. It is easy to calculate: [desired volume] / [printed volume] -> adjust.
adjust=1;

// default: 1.0 (should be enough up to 100ml)
wall_thickness_=1.0;

/* [Hidden] */

// set to true, to get a model of the content volume. This can be measure with MeshLab or other tools
build_measure_volume_reference=0; // [1:true, 0:false]

// this is the unscaled cup volume (calculated with MeshLab)
ref_volume=137.2013;

r_fn=12;  // used for $fn

labels=[
[0,label1_text,label1_font,label1_height,label_thickness],
[1,label2_text,label2_font,label2_height,label_thickness],
];

volume_ml=volume*unit;
echo("capacity in ml:", volume_ml);

// calculate correct scale to get the exact volume
factor=pow(volume_ml/ref_volume*adjust,1/3);
wall_thickness=wall_thickness_/factor;
echo("factor: ",factor);

r1=1;
r2=r1+wall_thickness;

y0=-35;
y1=0;
y3=45;

y4=68;

x0=0;
x1=19;
x2=29;
x3=30;
x5=16;

z0=0;
z1=-45;
z2=-5;

y2=-z1+y0;
y01=y0+(r2-r1);
y31=y4+(y3-y4)*2/3;

x4=(y1-y0)/(y2-y0)*(x3-x5)+x5;
x11=x1+(x2-x1)/2;

z3=-(r2-r1);
z4=y0;

bottom_factor=0.7;
handle_factor=0.9;

// cup points
cup_points=[
[x1,y4,z0],
[x2,y3,z0],
[x3,y2,z0],
[x4,y1,z0],
[-x4,y1,z0],
[-x3,y2,z0],
[-x2,y3,z0],
[-x1,y4,z0],
[x11*bottom_factor,y31,z1],
[x2*bottom_factor,y3-2,z1],
[x3*bottom_factor,y2,z1],
[x4*bottom_factor,y1+3,z4-3],
[-x4*bottom_factor,y1+3,z4-3],
[-x3*bottom_factor,y2,z1],
[-x2*bottom_factor,y3-2,z1],
[-x11*bottom_factor,y31,z1],
];

// handle points
handle_points=[
[x4*handle_factor,y1,z2],
[x4,y1,z0],
[x5,y0,z0],
[x5*handle_factor,y01,z3],
[-x5*handle_factor,y01,z3],
[-x5,y0,z0],
[-x4,y1,z0],
[-x4*handle_factor,y1,z2],
];

//build cup
rotate([45,0,0])
scale([1,1,1]*factor)
build_cup(cup_points);

module build_cup(points)
intersection()
{
	translate([0,0,z1-r2])
	linear_extrude(height=abs(z1)+r2,convexity=10)
	polygon([
	[-x3-r2-.1,y0-r2-.1],
	[x3+r2+.1,y0-r2-.1],
	[x3+r2+.1,y4+r2+.1],
	[-x3-r2-.1,y4+r2+.1],
	]);

	difference()
	{
		if(!build_measure_volume_reference)
		union()
		{
			build_handle(handle_points);

			handle_outline(points, r=r2);
		}

		handle_outline(points, r=r1);
	}
}

module build_handle(points)
assign(a=-atan((z3-z2)/(y1-y01)))
difference()
{
	union()
	{
		translate([0,y0,0])
		rotate([-45,0,0])
		translate([-(y1-y0)/2/2,0,-r2])
		cube([(y1-y0)/2,(y1-y0)/3,y1-y0],center=0);

		handle_outline(points, r=r2);
	}

	difference()
	{
		handle_outline(points, r=r1);

		for(label=labels)
		build_label(label[0],label[1],label[2],label[3],label[4]);
	}
}

module build_label(idx, text, font, height, thickness)
assign(n=4)
assign(xd=(x4-x5)/(n+1),yd=(y1-y01)/(n+1),zd=(z2-z3)/(n+1))
assign(r=yd/4)
if(len(text)>0)
{
	// write label
	rotate([-atan((z3-z2)/(y1-y01)),0,0])
	translate([0,-11.5-idx*2*yd,z2-r1-.1])
	minkowski()
	{
		write(text, h=height, t=.1, font=font, center=true);

		cylinder(r1=wall_thickness/4,r2=0,h=thickness,$fn=4);
	}
}
else
{
	// no labe? Then build riffle
	for(a=[0.7+(1-idx)*2:n-idx*2])
	hull()
	for(m=[0,1])
	mirror([m,0,0])
	translate([x5+xd*a-yd,y01+yd*a,z3+zd*a-r/2])
	sphere(r=r,$fn=r_fn);
}

module handle_outline(points, r)
hull()
for(p=points)
translate(p)
sphere(r=r,$fn=r_fn);

```