[User]
I'm looking to create a parametric jewelry collection, and I'd like to use OpenSCAD to do it. The basic idea is to have a frame shape, which can be a polygon with a variable number of sides or a circle, and then a repeating pattern inside of that shape. I'd like to be able to control a lot of parameters.

Specifically:

**Frame Shape:**
*   I need to be able to select the shape of the frame, choosing from a triangle, square, pentagon, hexagon, heptagon, octagon, nonagon, decagon, hendecagon, dodecagon, and a circle (approximated with 36 sides).
*   The radius of this shape should be adjustable.
*   I'd like to be able to rotate the frame shape by a certain amount of degrees.
*   There should be a hole for attaching a chain or a pin. I need a parameter to control the vertical position of this hole, with options for a "bracelet/brooch" position (near the edge) or a "necklace" position (more towards the center).

**Pattern:**
*   The pattern itself will consist of repeating shapes. I'd like the same options for shapes here as for the frame: triangle, square, pentagon, hexagon, heptagon, octagon, nonagon, decagon, hendecagon, dodecagon, and circle.
*   The radius of these repeating pattern shapes should be adjustable.
*   I want a parameter to control how much the pattern overlaps (or doesn't overlap), expressed as a percentage.
*   I need a rotation parameter for the overall pattern.
*   Finally, I need a parameter to control the thickness of the lines that make up the pattern.

**Build Plate:**
*   I want to have a few presets for build plate dimensions (Replicator 2, Replicator, Thingomatic), as well as the ability to set the X and Y dimensions manually.
* I'm not asking you to generate any library files, but I know I will be using a `build_plate.scad` file as a user-defined library that should be referenced (and not included).

**Other:**
*   The preview tab will need to be capable of rendering the final shape, just the shape, or just the pattern. I will need a variable to choose between them.
*   I need all of the dimensions to be in millimeters.

Could you generate the necessary OpenSCAD files for this, please? I think having a main `.scad` file and a user-defined `build_plate.scad` file as mentioned before will be fine.

[Assistant]
go_pattern_jewelry_collection.scad:
```
//Pattern jewelry collection by Growthobjects (2014)
//Licensed under the Creative Commons - Attribution - Non-Commercial license.
//Remixed from "Customizable iPhone Case" by MakerBot

use <utils/build_plate.scad>

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

/*Customizer Variables*/

/*[All]*/

//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 = 140; //[100:400]

//when Build Plate Selector is set to "manual" this controls the build plate y dimension
build_plate_manual_y = 140; //[100:400]

build_plate(build_plate_selector,build_plate_manual_x,build_plate_manual_y);

/*[Shape]*/
frame_shape = 3; //[3:Triangle (3-sided),4:Square (4-sided),5:Pentagon (5-sided),6:Hexagon (6-sided),7:Heptagon (7-sided),8:Octogon (8-sided),9:Nonagon (9-sided),10:Decagon (10-sided),11:Hendecagon (11-sided),12:Dodecagon (12-sided),36:Circle (36-sided)]
//in mm:
frame_shape_radius = 20; //[12.5:30]
frame_shape_orientation =  270; //[0:0degrees,10:10 degrees (9-sided),22.5:22.5degrees (8-sided),45:45degrees (4-sided),90:90degrees,190:190degrees (9-sided), 270:270(degrees)]
frame_hole_position =  0; //[0:bracelet or brooch (except triangle),0.5:necklace]

/*[Pattern]*/
pattern_shape = 6; //[3:Triangle (3-sided),4:Square (4-sided),5:Pentagon (5-sided),6:Hexagon (6-sided),7:Heptagon (7-sided),8:Octogon (8-sided),9:Nonagon (9-sided),10:Decagon (10-sided),11:Hendecagon (11-sided),12:Dodecagon (12-sided),36:Circle (36-sided)]
//in mm:
pattern_radius = 4; //[4:22]
pattern_overlap = 0; //[0:100]
//in degrees:
pattern_rotation = 90; //[0:180]
//in .4 mm increments:
pattern_line_thickness = 1.5; //[0.8:12]

/*[Hidden]*/

preview_tab = "Final";

pattern_shape_sides = pattern_shape;

pattern_base_thickness = 2;

pattern_canvas_width = 69.3;
pattern_canvas_length = 60;
pattern_canvas_height = 8;

circle_resolution = 24;

fudge = .05;

translate([0,0,-.1])
build_plate(build_plate_selector);

module patterncanvas(	w,		//width
					l,		//length
					h)		//height
					{
		cube([w,l,h],center = true);
	}

module patterncanvas2D(	w,		//width
						l,)		//length
{
		square([w,l],center = true);
}

module jewel_shape(){

	if(preview_tab == "Final" || preview_tab == "All" || preview_tab == "Shape" || preview_tab == "Pattern"){

		if(preview_tab == "Final"){
intersection(){
translate ([0,0,-25])
rotate([0,0,frame_shape_orientation])
cylinder(h=50,r=frame_shape_radius-2, $fn = frame_shape);
			difference(){
				union(){
					intersection(){
						translate([0,0,pattern_base_thickness/2])
							patterncanvas(pattern_canvas_width,pattern_canvas_length,pattern_base_thickness);

							scale([1,1,5])
								linear_extrude(height = pattern_canvas_height, center = true, convexity = 10)
									pattern(pattern_canvas_width,pattern_canvas_length,pattern_canvas_height,pattern_radius,pattern_overlap,pattern_line_thickness,pattern_shape_sides,pattern_rotation);
							}
				}
			}}
		}

		if(preview_tab == "All" || preview_tab == "Pattern"){
intersection (){
translate ([0,0,-25])
rotate([0,0,frame_shape_orientation])
cylinder(h=50,r=frame_shape_radius-2, $fn = frame_shape);
					intersection(){
						patterncanvas2D(pattern_canvas_width,pattern_canvas_length);
						scale([1,1,5])
						pattern(pattern_canvas_width,pattern_canvas_length,pattern_base_thickness,pattern_radius,pattern_overlap,pattern_line_thickness,pattern_shape_sides,pattern_rotation);
	}
}
}
	}
}

//color([.5,0,0])
jewel_shape();

module pattern(w,l,h,r,rmod,th,sides,rot){

	columns = l/(r*3)+1;
	rows = w/(r*sqrt(3)/2*2);

	translate([-w/2,l/2,0])
		rotate([0,0,-90])

			for(i = [-1:rows+1]){

				translate([0,r*sqrt(3)/2*i*2,0])
				//scale([1*(1+(i/10)),1,1])
					for(i = [0:columns]){
						translate([r*i*3,0,0])
							for(i = [0:1]){
								translate([r*i*1.5,r*sqrt(3)/2*i,0])
									rotate([0,0,rot])
									difference(){
										if(sides < 5){
											circle(r = r+th+(r*rmod/50), center = true, $fn = sides);
											//cylinder(height = h, r = r+th+(r*rmod/50), center = true, $fn = sides);
										} else {
											circle(r = r+(r*rmod/50)+fudge, center = true, $fn = sides);
											//cylinder(height = h, r = r+(r*rmod/50), center = true, $fn = sides);
										}
										circle(r = r-th+(r*rmod/50)+fudge, center = true, $fn = sides);
										//cylinder(height = h+1, r = r-th+(r*rmod/50), center = true, $fn = sides);
									}
							}
					}
			}
}

module frame_shape(){
difference (){
difference (){
rotate([0,0,frame_shape_orientation])
cylinder(h=7,r=frame_shape_radius, $fn = frame_shape);
translate ([0,0,-25])
rotate([0,0,frame_shape_orientation])
cylinder(h=50,r=frame_shape_radius-2, $fn = frame_shape);
}
translate ([-frame_shape_radius*3/2,frame_shape_radius*frame_hole_position,4])
rotate ([0,90,0])
cylinder (h=frame_shape_radius*3, r=1.5, $fn = 30);
}
}
frame_shape();

```


[User]
Hey, I'm looking to generate a customizable hexagonal grid storage container, kind of like the one I have attached, but I need it to be totally parametric. The basic idea is a grid of hexagonal slots, each with a small cylindrical wall and a flat bottom.

Here's the breakdown of what I need to be customizable:

*   **Slot Dimensions:**
    *   `slot_radius`: The radius of the hexagonal slot from vertex to vertex.
    *   `slot_depth`: The depth of each hexagonal slot.

*   **Grid Layout:**
    *   `number_of_columns`: The number of columns of hexagonal slots. This one can have a decimal value for a staggered grid.
    *   `number_of_rows`: The number of rows of slots.

*   **Wall and Base:**
    *   `wall_thickness`: The thickness of the walls around each slot and the outer walls of the container.
    *   `bottom_thickness`: The thickness of the base of the container.

*   **Staggering:**
    *   `first_line_type`: A binary setting to control whether the first row is a short row or long row, which affects the staggering pattern.  0 for a long row, 1 for a short row.

*   **Tabs:**
    *   `use_tabs`: A binary setting to control whether or not the container has tabs connecting the grid together at the sides.

I'd like to define all of these as variables at the start of the file. The final object should be a single union.

I don't have any specific preferences for libraries, so use whichever ones you think are best for generating hexagonal structures. Thanks!

[Assistant]
smd_storage_hex.scad:
```
// Measured vertex to vertex
slot_radius =  8;
slot_depth  =  3;
number_of_columns  =  4.5;
number_of_rows =  7;
wall_thickness =  2;
bottom_thickness =  2;
first_line_type = 0; // [1:Short, 0:Long]
use_tabs = 1; // [0:No, 1:Yes]

S30 = sin(30);
C30 = cos(30);

nNumShort = floor(number_of_columns);
nNumLong  = ceil(number_of_columns);
nNumOdd   = first_line_type ? nNumLong : nNumShort;
nNumEven  = first_line_type ? nNumShort : nNumLong;

vFullWidth = (nNumShort==nNumLong ? nNumLong+0.5 : nNumLong)*2*slot_radius*C30+wall_thickness;

iFirstLong = first_line_type ? 1 : 0;
iLastLong  = (number_of_rows+first_line_type)%2 ? number_of_rows-1 : number_of_rows-2;

iFirstLongEnd = nNumOdd == nNumEven ? 1-first_line_type : iFirstLong;
iLastLongEnd  = nNumOdd == nNumEven ? number_of_rows-2+first_line_type : iLastLong;

echo("iFirstLongEnd", iFirstLongEnd);
echo("iLastLongEnd", iLastLongEnd);
module holder(r, h) {
	for (i=[0:5]) rotate(a = [0,0,60*i]) translate([-slot_radius*C30,-slot_radius/2,0]) {
		cylinder(r = wall_thickness/2, h=bottom_thickness + slot_depth, $fa=15, $fs = 0.1);
		translate([-wall_thickness/2,0,0]) {
			cube(size = [wall_thickness, slot_radius, bottom_thickness + slot_depth], center = false);
			cube(size = [slot_radius, slot_radius, bottom_thickness], center = false);
		}
	}
}

//rotate([0,0,$t*360])
translate([-number_of_columns*slot_radius*C30,-number_of_rows*slot_radius*(1+S30)/2,0])
union() {
	for (iH = [0:number_of_rows-1]) {
		translate([slot_radius*C30*((iH+first_line_type)%2),iH*slot_radius*(1+S30),0])
			for (iW = [0:(iH%2 ? nNumOdd : nNumEven)-1]) {
				translate([iW*slot_radius*2*C30,0,0])
					holder(slot_radius, slot_depth);
			}
	}
	if (use_tabs) {
		translate([-slot_radius*C30-wall_thickness/2,iFirstLong*2*slot_radius*C30*C30,0]) {
				cube(size=[
					slot_radius*C30+wall_thickness/2,
					(iLastLong-iFirstLong)*2*slot_radius*C30*C30,
					bottom_thickness], center=false);
		}
		translate([vFullWidth - 2*slot_radius*C30-2*wall_thickness/2,iFirstLongEnd*2*slot_radius*C30*C30,0]) {
				cube(size=[
					slot_radius*C30+wall_thickness/2,
					(iLastLongEnd-iFirstLongEnd)*2*slot_radius*C30*C30,
					bottom_thickness], center=false);
		}
	}
}

```


[User]
I need a set of OpenSCAD files to generate a customizable pulley system, similar to what's described in the provided text. I’d like it to be composed of three main parts: a central wheel and two identical side blocks. These blocks should interlock with each other and also allow for a central axle to go through them.

Specifically:

*   **Wheel:** The wheel should have a central groove to guide a rope, based on the specified rope diameter. The wheel diameter and rope diameter should be customizable parameters. I would like to have a central hole for an axle.

*   **Side Blocks:** The side blocks should be identical and should have a way to interlock (male/female) with each other to enclose the central wheel. They should also have a central hole for an axle that aligns with the wheel's axle hole. The interlocking mechanism should be designed to be secured by M4 bolts. Additionally, the blocks should include a pin mechanism for alignment (also male/female) and some sphere "bumps" on the blocks to add some friction/guide to keep the pulley properly aligned during use. There should also be a hole for M4 bolts to help secure the blocks together.

*   **Customization:** I need to be able to specify the rope diameter, wheel diameter, and also adjust parameters such as bolt diameters and lengths, as well as block thickness and size. It would also be ideal to have the pin diameter and length exposed as parameters. I'd like to be able to easily customize the block thickness and pin diameters/lengths so that I can accommodate different materials and tolerances.

*   **Libraries:** I would like you to use the BOSL2 library for this design. I'm not familiar enough with it to specify specific modules, though.

I want a separate file for each component (wheel and side block), and a top-level file to assemble everything and allow me to easily manipulate the parameters.

I would like the design to be robust, suitable for outdoor use, and printable on a standard 3D printer. Please make sure that the interlocking mechanisms are robust, as they will bear the load, and that the bolt holes are well aligned so it's easy to assemble. Let me know if you have any questions.

[Assistant]
pulley.scad:
```
/////////////////////////////////////////////////////////////////////////
//
//  'Customizable Pulley' by Chris Molloy (http://chrismolloy.com/)
//
//  Released under Creative Commons - Attribution - Share Alike licence
//
/////////////////////////////////////////////////////////////////////////

rope_diameter = 8;
wheel_diameter = 60;

/* [Hidden] */
$fn = 60;

module wheel(ropeDiameter = 10, wheelDiameter = 100) {
  wheelRadius = wheelDiameter / 2;
  ropeRadius = ropeDiameter / 2;

  difference() {
    cylinder(r = wheelRadius, h = ropeDiameter + 2); // wheel
    rotate_extrude(convexity = 10) {
        translate([wheelRadius + 1, ropeRadius + 1, 0]) {
          circle(r = ropeRadius);
        }
      } // rope groove
    cylinder(r = 4.5, h = ropeDiameter * 3, center = true); // axel
  }
}

module halfShell(ropeDiameter = 10, wheelDiameter = 100) {
  wheelRadius = wheelDiameter / 2;
  ropeRadius = ropeDiameter / 2;
  thinEnd = (ropeRadius * 3) + 4;
  thickEnd = (5 * thinEnd) / 3;
  span = wheelRadius + ropeDiameter;
  blockDepth = max(20, thinEnd);

  difference() {
    union() {
      cylinder(r = thinEnd, h = 4); // foot block
      linear_extrude(convexity = 10, height = 4) {
          polygon(points = [
            [-thinEnd, 0],
            [-thickEnd, span],
            [-thickEnd, span + blockDepth],
            [thickEnd, span + blockDepth],
            [thickEnd, span],
            [thinEnd, 0]
          ]);
        } // arm
      translate([-thickEnd, span, 0]) {
          cube([thickEnd * 2, blockDepth, ropeRadius + 6]);
        } // head block
      cylinder(r = 4, h = ropeRadius + 6); // axel
      translate([0, 0, 4]) {
          cylinder(r1 = 5, r2 = 4, h = 1);
        } // axel collar
      translate([-thinEnd, span + 10, (ropeRadius / 2) + 7]) {
          cylinder(r1 = 5, r2 = 4, h = ropeRadius + 2);
        } // male pin
      translate([0, span + blockDepth, 0]) {
          cylinder(r = thinEnd, h = ropeRadius + 6);
        } // handle block
      translate([0, thinEnd - 2, 4]) {
          sphere(radius=1, center=true);
        } // guide bump 1
      translate([0, -(thinEnd - 2), 4]) {
          sphere(radius=1, center=true);
        } // guide bump 2
      translate([thinEnd - 2, 0, 4]) {
          sphere(radius=1, center=true);
        } // guide bump 3
      translate([-(thinEnd - 2), 0, 4]) {
          sphere(radius=1, center=true);
        } // guide bump 4
    }
    translate([0, 0, -1]) {
        cylinder(r = 2, h = ropeRadius + 8);
      } // axel hole
    translate([-thinEnd, span + 10, -1]) {
        cylinder(r = 2, h = ropeDiameter + blockDepth);
      } // male pin hole
    translate([thinEnd, span + 10, -1]) {
        cylinder(r = 2, h = ropeRadius + 8);
      } // female pin hole
    translate([thinEnd, span + 10, (ropeRadius + 6) / 2]) {
        cylinder(r1 = 4, r2 = 5, h = ropeRadius + 2);
      } // female pin
    translate([0, span + blockDepth, -1]) {
        cylinder(r = thinEnd / 2, h = ropeRadius + 8);
      } // handle block
  }
}

translate([0, (rope_diameter * 1.5) + 8, 0]) {
  halfShell(rope_diameter, wheel_diameter);
}
rotate([0, 0, 180]) {
  translate([0, (rope_diameter * 1.5) + 8, 0]) {
    halfShell(rope_diameter, wheel_diameter);
  }
}
translate([-((wheel_diameter / 2) + (rope_diameter * 1.5) + 8), 0, 0]) {
  wheel(rope_diameter, wheel_diameter);
}
```


[User]
I need a parametric OpenSCAD design for a hook that attaches to an angle steel shelf. I have a basic idea, but I need something flexible that I can customize to different shelf sizes and hook requirements.

Here's what I'm thinking:

The hook should have a backplate that sits flush against the shelf upright. This backplate will have a width, a height, and a thickness, all of which I need to be able to specify. There needs to be a groove that hooks onto the angled lip of the shelf. This groove should have a gap (the thickness of the shelf material) and a depth that are also configurable. I also want to be able to adjust the length of the transition between the backplate and the hook groove. There should be a small block of material at the root of the hook to prevent rotation of the hook on the shelf.

The hook itself should extend out from the shelf. I'd like to define the diameter and length of the hook "arm." Finally, I'd like a small bump or lip at the end of the hook arm, with adjustable height and length. I need to be able to adjust how far the hook arm is offset horizontally and vertically from the center of the backplate.

I'd prefer to keep it all in one file for now if possible. I don't have any strong opinions on libraries; whatever works best is fine. But please try to use comments to explain what each part does, just so I can understand it better later.

[Assistant]
hook_for_angle_rack_140615.scad:
```
// hook for angle rack
// ver.140615 by junnno

// the width of the back plate
base_width = 20;
// the height of the back plate
base_height = 30;
// the thickness of the back plate
base_thickness = 2;

// the thickness of the groove hooking on angle body
hook_groove_gap = 2;
// the depth of the groove hooking on angle body
hook_groove_depth = 4;
// the theckness of the part connecting the hook root and the arm
hook_transition_length = 2;
// the height of the root block to restrict rotation
hook_block_height = 4;

// the diameter of the arm
arm_diameter = 7;
// the length of the arm from the edge of the groove to the most tip
arm_length = 18;
// the height of the bump at the arm tip
arm_tip_height = 3;
// the length of the bump at the arm tip
arm_tip_length = 2;

// the horizontal offset of the arm root from the center of the base plate
arm_offset_horizontal = 0;
// the vertical offset of the arm root from the center of the base plate
arm_offset_vertical = 4;

$fn = 36;

module quater_cylinder(h=1,r=1,intrusion=0)
{
	intersection(){
		cylinder(h=h, r=r);
		translate([-intrusion,-intrusion,-1]) cube([r+1+intrusion,r+1+intrusion,h+2],center=false);
	}
}
//#quater_cylinder(10,10);

module hook01()
{
	// the base plate
	translate([-arm_offset_horizontal,-arm_offset_vertical,base_thickness/2])
		cube([base_width, base_height, base_thickness], center = true);

	// the hook area of the arm
	translate([0,0,base_thickness])
		cylinder(h = hook_groove_gap + hook_transition_length, r = arm_diameter/2);
	translate([0,hook_groove_depth/2,base_thickness+hook_groove_gap+hook_transition_length/2])
		cube([arm_diameter,abs(hook_groove_depth),hook_transition_length], center = true);

	// the hook block
	translate([0,-hook_block_height/2, base_thickness+(hook_groove_gap+hook_transition_length)/2])
		cube([arm_diameter,hook_block_height,hook_groove_gap+hook_transition_length], center = true);
	translate([-arm_diameter/2, -hook_block_height, base_thickness])
		rotate([-90,-90,-90])
			quater_cylinder(h=arm_diameter,r=hook_groove_gap+hook_transition_length,intrusion=0.1);

	// the body of the arm
	translate([0,hook_groove_depth,base_thickness+hook_groove_gap])
		cylinder(h = arm_length, r = arm_diameter/2);

	// the tip of the arm
	translate([0,hook_groove_depth-arm_tip_height,base_thickness+hook_groove_gap+arm_length-arm_tip_length])
		cylinder(h = arm_tip_length, r = arm_diameter/2);
	translate([0,hook_groove_depth-arm_tip_height/2,base_thickness+hook_groove_gap+arm_length-arm_tip_length/2])
		cube([arm_diameter,abs(arm_tip_height),arm_tip_length], center = true);

}

rotate([0,90,0])
	hook01();

```


[User]
Hey, I'm looking to generate some parametric interlocking structures in OpenSCAD. I have a basic idea of a male and female bar that fit together, and I'd like to be able to control some key dimensions. I also want to make sure that the bars have screw holes that fit M4 machine screws.

Here's a breakdown of the parameters I need to control:

*   **Inner Width:** The width of the main inner part of the bars.
*   **Outer Width:** The overall width of the bars.
*   **Width Gap:** A small gap between the male and female bar to ensure they fit nicely.
*  **Cross Over Length:**  The length of the interlocking portion of the male bar.
*   **Length:**  The overall length of each bar should also be configurable.
*   **Screw Hole Diameter:** The diameter of the screw holes which should fit M4 machine screws.

I also want separate modules for both the male and female bar and I want to have an option to display either the male or female bar. I'd like to have two different module types for the male and female bar too, one with the screw holes on both sides, and another where it only generates the screw holes on one side. I want to be able to make a cross shape with the male bar as well. I want all the screw holes to be countersunk.

Could you create an OpenSCAD file (or a few files if it makes more sense) that includes these parametric modules?  I'm envisioning something I could reuse to make a variety of different sized structures, using these basic building blocks. I don't need any particular library to be used, but feel free to use one if it helps make things easier.

[Assistant]
Structure.scad:
```
// Inner Width of Structure
ginnerWidth = 12;

// Outer Width of Structure
gouterWidth = 18;

// Width Gap (either side)
gwidthGap = 0.5;

// Cross over length
gcrossOver = 9;

//Display Male Bar
Display_Male_Bar = true; // [true,false]

//Display Female Bar
Display_Female_Bar = true; // [true,false]

// Bar Connect Male Structure
if(Display_Male_Bar) maleBar(100, ginnerWidth, gouterWidth, gcrossOver);

// Bar Connect Female Structure
if(Display_Female_Bar) translate([-20,0,0]) femaleBar(100, ginnerWidth, gouterWidth, gwidthGap, gcrossOver);

module maleCrossBar(length, innerWidth, outerWidth, crossOver)
{

	translate([0,length/2+(outerWidth/2),0]) maleBar(length, innerWidth, outerWidth, crossOver);
	rotate([0,0,90]) translate([0,length/2-(outerWidth/2),0]) maleBar(length, innerWidth, outerWidth, crossOver);
}

module maleBar(length, innerWidth, outerWidth, crossOver)
{
	screwHoleLength = outerWidth + 2;
	screwHoleWidth = 1.5;

	rotate([90,0,0]) translate([0,0,crossOver])
	difference()
	{
		union()
		{
			translate([(outerWidth-innerWidth)/2,(outerWidth-innerWidth)/2,-crossOver]) cube([innerWidth,innerWidth,length]);
			cube([outerWidth,outerWidth,length - (crossOver*2)]);
		}

		translate([outerWidth/2,outerWidth+1,-crossOver/2]) rotate([90,0,0]) cylinder(screwHoleLength,screwHoleWidth,screwHoleWidth,$fn=100);

		translate([-1,outerWidth/2,-crossOver/2]) rotate([0,90,0]) cylinder(screwHoleLength,screwHoleWidth,screwHoleWidth,$fn=100);

		translate([outerWidth/2,outerWidth+1,length-crossOver-(crossOver/2)]) rotate([90,0,0]) cylinder(screwHoleLength,screwHoleWidth,screwHoleWidth,$fn=100);

		translate([-1,outerWidth/2,length-crossOver-(crossOver/2)]) rotate([0,90,0]) cylinder(screwHoleLength,screwHoleWidth,screwHoleWidth,$fn=100);
	}
}

module femaleBar(length, innerWidth, outerWidth, widthGap, crossOver)
{
	screwHoleLength = outerWidth + 2;
	innerWidth = innerWidth+widthGap;
	screwHoleWidth = 1.5;

	rotate([90,0,0])
	difference()
	{
		cube([outerWidth,outerWidth,length]);

		translate([(outerWidth-innerWidth-widthGap)/2,(outerWidth-innerWidth-widthGap)/2,-1]) cube([innerWidth+widthGap,innerWidth+widthGap,crossOver+2]);

		translate([(outerWidth-innerWidth-widthGap)/2,(outerWidth-innerWidth-widthGap)/2,length-(crossOver)-1]) cube([innerWidth+widthGap,innerWidth+widthGap,crossOver+2]);

		translate([outerWidth/2,outerWidth+1,crossOver/2]) rotate([90,0,0]) cylinder(screwHoleLength,screwHoleWidth,screwHoleWidth,$fn=100);

		translate([-1,outerWidth/2,crossOver/2]) rotate([0,90,0]) cylinder(screwHoleLength,screwHoleWidth,screwHoleWidth,$fn=100);

		translate([outerWidth/2,outerWidth+1,length-(crossOver/2)]) rotate([90,0,0]) cylinder(screwHoleLength,screwHoleWidth,screwHoleWidth,$fn=100);

		translate([-1,outerWidth/2,length-(crossOver/2)]) rotate([0,90,0]) cylinder(screwHoleLength,screwHoleWidth,screwHoleWidth,$fn=100);

	}
}

module hmaleBar(length, innerWidth, outerWidth, crossOver)
{
	screwHoleLength = outerWidth + 2;
	screwHoleWidth = 1.5;

	rotate([90,0,0]) translate([0,0,crossOver])
	difference()
	{
		union()
		{
			translate([(outerWidth-innerWidth)/2,(outerWidth-innerWidth)/2,-crossOver]) cube([innerWidth,innerWidth,length]);
			cube([outerWidth,outerWidth,length - (crossOver)]);
		}

		translate([outerWidth/2,outerWidth+1,-crossOver/2]) rotate([90,0,0]) cylinder(screwHoleLength,screwHoleWidth,screwHoleWidth,$fn=100);

		translate([-1,outerWidth/2,-crossOver/2]) rotate([0,90,0]) cylinder(screwHoleLength,screwHoleWidth,screwHoleWidth,$fn=100);
	}
}

module hfemaleBar(length, innerWidth, outerWidth, widthGap, crossOver)
{
	screwHoleLength = outerWidth + 2;
	innerWidth = innerWidth+widthGap;
	screwHoleWidth = 1.5;

	rotate([90,0,0])
	difference()
	{
		cube([outerWidth,outerWidth,length]);

		translate([(outerWidth-innerWidth)/2,(outerWidth-innerWidth)/2,-1]) cube([innerWidth,innerWidth,crossOver+2]);

		translate([outerWidth/2,outerWidth+1,crossOver/2]) rotate([90,0,0]) cylinder(screwHoleLength,screwHoleWidth,screwHoleWidth,$fn=100);

		translate([-1,outerWidth/2,crossOver/2]) rotate([0,90,0]) cylinder(screwHoleLength,screwHoleWidth,screwHoleWidth,$fn=100);

	}
}
```


[User]
Hey, I'm looking to design a parametric card holder for mini business cards, specifically the kind that MOO sells, but I'd like it to be adaptable to other card sizes too. It should have two parts, a top and a bottom, that hinge together using a standard 608 skateboard bearing. The design should be such that it can be opened and closed with one hand, with a mechanism that pushes a card out slightly when opened. Ideally, it should be able to hold around 20 cards, but I'd like to be able to adjust this number as well. I'm looking for an OpenSCAD file (or files) to generate this.

Here are the dimensions of the default card I'd like to use:
*   Card Height: 28.5 mm
*   Card Width: 70.75 mm
*   Card Thickness: 0.5 mm

And here are the dimensions for the 608 bearing:
*   Bearing Outer Diameter: 22.2 mm
*   Bearing Inner Diameter: 8 mm
*   Bearing Height: 7 mm

I also need some basic parameterization for the walls of the holder and clearances.
* Wall Thickness: 1.2 mm
* Clearance/Tolerance: 0.2 mm
I'd like to be able to add text to the top part of the holder as well, using the fonts included with the MCAD library. Could you use the `fonts.scad` file from MCAD for this?

I'd also like the card pushing mechanism to use a ramped surface to push the cards out when the lid is opened. It would be nice if the edges were slightly rounded using a hull and sphere approach.

And can you also include options to view just the top, just the bottom, both pieces together, an exploded view, and even an intersection view that shows the overlapping solid region? Thanks so much!

[Assistant]
moo-card-holder.scad:
```
/* Card holder for "Moo"-style mini-cards.
** Somewhat parametric, so other card sizes can be supported.
** Inspired by the official moo card holder.
**
** Version 1.2, 2014-07-02
**
** Copyright 20014 Robert Quattlebaum.
** All rights Reserved.
**
** Released under the Attribution-NonCommercial 4.0 International License
** http://creativecommons.org/licenses/by-nc/4.0/
**
** Please contact me for commercial use. <darco@deepdarc.com>
*/

//part = "presentation";
part = "both"; // [both, top, bottom]
//part = "exploded";
//part = "intersection";
//part = "top";
//part = "bottom";
//$t=0.5;

lidText = "";

// Can't be lower than bearingHeight/cardThickness, or 14 for the default bearing.
cardCapacity = 20;

// In millimeters (Default is for MOO MiniCards)
cardHeight = 28.5;

// In millimeters (Default is for MOO MiniCards)
cardWidth = 70.75;

// In millimeters (Default is for MOO MiniCards)
cardThickness = 0.5;

// How thick should the walls be?
wallThickness = 1.2;

// In millimeters
bearingOuterDiameter=22.2;

// In millimeters
bearingInnerDiameter=8;

// In millimeters
bearingHeight=7;

$fs=0.1;
$fa=3;

if(bearingHeight/cardThickness > cardCapacity) {
	echo("ERROR: Card capacity too low! Max is ", bearingHeight/cardThickness);
}

if(part=="presentation") {
	SlideCardHolder(part_index=1);
	SlideCardHolder(part_index=2);
	color([0.8,0.8,0.8,0.5])
	SlideCardHolder(part_index=3);
} else if(part=="top") {
	SlideCardHolder(part_index=2, flipped=true);
} else if(part=="bottom") {
	SlideCardHolder(part_index=1);
} else if(part=="both") {
	assign($t = 0) {
	translate([00,-20,00])SlideCardHolder(part_index=1);
	translate([00, 20,00])SlideCardHolder(part_index=2, flipped=true);
	}
} else if(part=="intersection") {
	%SlideCardHolder(part_index=0);
	render()
	union() {
		intersection() {
			SlideCardHolder(part_index=1);
			SlideCardHolder(part_index=2);
		}
		intersection() {
			union() {
				SlideCardHolder(part_index=1);
				SlideCardHolder(part_index=2);
			}
			SlideCardHolder(part_index=3);
		}
	}
} else if(part=="exploded") {
	assign($t = 0) {
	translate([00,0,00])SlideCardHolder(part_index=1);
	translate([00,0,25])SlideCardHolder(part_index=2);
	color([0.8,0.8,0.8,0.5])
	translate([0,0,50])bearing_608();
	}
}

module printLidText(thisText="OpenSCAD Rocks!",h=1,thisFont=8bit_polyfont(),center=true)
{
	// Find one letter matches from 2nd column (index 1)
	theseIndicies=search(thisText,thisFont[2],1,1);
	// Letter spacing, x direction.
	x_shift=thisFont[0][0];
	y_shift=thisFont[0][1];
	x_offset = (center==true)?-len(theseIndicies)*x_shift/2:0;
	y_offset = (center==true)?-y_shift/2:0;
	// Simple polygon usage.
	linear_extrude(height=h)for(i=[0:len(theseIndicies)-1])
		translate([i*x_shift+x_offset,y_offset]) {
			polygon(
				points=thisFont[2][theseIndicies[i]][6][0],
				paths=thisFont[2][theseIndicies[i]][6][1]
			);
		}
}

module bearing_608()
{
	render() union() {
		difference() {
			cylinder(h=bearingHeight, d=bearingOuterDiameter);
			cylinder(h=bearingHeight+1, d=bearingOuterDiameter-2);
		}
		difference() {
			union() {
				cylinder(h=bearingHeight, d=bearingInnerDiameter+2);
				translate([0,0,1])cylinder(h=bearingHeight-2, d=bearingOuterDiameter);
			}
			cylinder(h=bearingHeight+1, d=bearingInnerDiameter);
		}
	}
}

module rcube(Size=[20,20,20],b=2,center=false)
{
	translate((center==false)?[Size[0]/2,Size[1]/2,Size[2]/2]:[0,0,0])
	hull() {
		for(x=[-(Size[0]/2-b),(Size[0]/2-b)]) {
			for(y=[-(Size[1]/2-b),(Size[1]/2-b)]) {
				for(z=[-(Size[2]/2-b),(Size[2]/2-b)]) {
					translate([x,y,z])
						sphere(r=b, $fa=$fa*5);
				}
			}
		}
	}
}

module rcylinder(h=10,r1=10,r2=10,b=2,center=false)
{

	translate([0,0,(center==true)?-h/2:0]) {
		rotate_extrude()
		hull() {
			translate([r1-b,   b, 0]) circle(r = b, $fa=$fa*5);
			translate([r2-b, h-b, 0]) circle(r = b, $fa=$fa*5);
			square([r1-b,b]);
			translate([0, h-b, 0])
			square([r2-b,b]);
		}
	}
}

module inv_minkowski() {
	render()
	difference() {
		child(0);
		minkowski() {
			difference() {
				cube([1000000000,1000000000,1000000000],center=true);
				child(0);
			}
			child(1);
		}
	}
}

module round_edges(r=3) {
	minkowski() {
		inv_minkowski() {
			child(0);
			sphere(r);
		}
		sphere(r);
	}
}

module hollow() {
	difference() {
		child(0);
		inv_minkowski() {
			child(0);
			child(1);
		}
	}
}

use <MCAD/fonts.scad>

module SlideCardHolder(
	tol = 0.2,
	part_index = 0,
	lidText = lidText,
	flipped = false
) {

	thisFont=8bit_polyfont();

	hingeRadius = bearingInnerDiameter/2;
	rampAngle = 60;
	cardDepth = cardThickness*cardCapacity;
	rampWidth = cardDepth/tan(rampAngle);
	notchSize = 1.1;
	bearingRadius = bearingOuterDiameter/2;
	lidThickness = wallThickness*2;
	lipDepth = 2.5;
	hingeSpace = bearingRadius + wallThickness*2;
	boxHeight = cardThickness*cardCapacity + wallThickness + lidThickness + tol;
	curveCompensation = 2.1; // TODO: Calculate this automatically!

	outerRadius = cardWidth + hingeSpace + rampWidth + curveCompensation + wallThickness*2 + lidThickness + tol;

	module CardVolume() {
		translate(
			[	hingeSpace + wallThickness,
				-cardHeight/2,
				wallThickness,
			]
		)
		cube ([cardWidth,cardHeight,cardThickness*cardCapacity]);
	}

	module HingeClip() {
		translate([0,0,wallThickness])
		difference() {
			union() {
				cylinder(h=boxHeight-wallThickness,r1=hingeRadius,r2=hingeRadius-tol/2);
/*
				translate([0,0,boxHeight-1-wallThickness])
				intersection() {
					cylinder(h=1, r1=hingeRadius-tol/2,r2=hingeRadius-tol/2+1);
					cylinder(h=1, r2=hingeRadius-tol/2,r1=hingeRadius-tol/2+1);
				}
*/
			}
/*
			union () {
				cylinder(h=boxHeight,r=hingeRadius-1.2);
				cube([0.8,cardWidth,cardDepth*5],center=true);
				cube([cardWidth,0.8,cardDepth*5],center=true);
			}
*/
		}
		cylinder(h=boxHeight-bearingHeight,r=hingeRadius+2);
	}

	hingeClearance=1.0;

	module InnerBoxVolume() {
		difference() {
			union() {
				translate([0,0,boxHeight-bearingHeight-hingeClearance])
				cylinder(h = bearingHeight-lidThickness+hingeClearance-tol/2, r = bearingRadius+wallThickness+hingeClearance);
				intersection() {
					cylinder(
						r = outerRadius - wallThickness - lidThickness - tol,
						h = cardThickness*cardCapacity *2
					);
					translate(
						[	hingeSpace,
							-0.5*(cardHeight),
							wallThickness,
						]
					)
						cube (
							[	cardWidth*2,
								cardHeight,
								cardThickness*cardCapacity,
							]
						);
				}
			}
			translate([cardWidth+hingeSpace+wallThickness,cardHeight,wallThickness])
				rotate([90,0,0])linear_extrude(cardHeight*2)
					polygon([
						[0,0],
						[rampWidth+curveCompensation,0],
						[rampWidth+curveCompensation,cardThickness*cardCapacity],
						[rampWidth,cardThickness*cardCapacity]
					]);
			translate(
				[	hingeSpace,
					-cardHeight,
					wallThickness,
				]
			)
				cube (
					[	wallThickness,
						cardHeight*2,
						cardThickness*cardCapacity,
					]
				);
		}
	}

	module BoxVolume() {
		hull() {
			rcylinder(h = boxHeight, r1 = 0.5*(cardHeight + wallThickness*2), r2 = 0.5*(cardHeight + wallThickness*2));
			intersection() {
				rcylinder(
					r1 = outerRadius,
					r2 = outerRadius,
					h = boxHeight,
					b = 3
				);
				translate(
					[	0,//-hingeSpace - wallThickness,
						-0.5*(cardHeight + wallThickness*2),
						0,
					]
				)
				rcube (
					[	cardWidth*2,
						cardHeight + wallThickness*2,
						boxHeight,
					]
				);
			}
		}
	}

	module BoxShell() {
		difference() {
			BoxVolume();
			InnerBoxVolume();
		}
	}

	// This object is used to separate the top half from the bottom half.
	module PartSeparator(dialation) {
		difference() {
			scale([1.0,1.0+dialation*1.5,1.0])
			union() {
				if(dialation<0) {
					translate([outerRadius - lidThickness-curveCompensation-wallThickness*3/4,0,cardThickness*cardCapacity + wallThickness/2+tol + dialation])scale([wallThickness,cardHeight + wallThickness*2,wallThickness])sphere(d=1/*,$fa=10*/);
				}
				translate([0, 0, wallThickness])
				rcylinder(
					h = cardThickness*cardCapacity + dialation,
					r1 = outerRadius - lidThickness + dialation,
					r2 = outerRadius - lidThickness + dialation,
					center = false
				);
				cylinder(
					h = wallThickness + cardThickness*cardCapacity/2,
					r = outerRadius - lidThickness + wallThickness - lipDepth + dialation*0.25,
					center = false
				);
			}
			translate([outerRadius - lidThickness + min(0,dialation), 0, 0])
			cylinder(h=cardThickness*cardCapacity + lidThickness + dialation,d=notchSize);
/*
			rotate([0,0,45])
			translate([-notchSize/2, -notchSize/2, 0])
			cube([notchSize,notchSize,cardThickness*cardCapacity + lidThickness + dialation]);
*/
		}
	}

	module Base() {
		difference() {
			union() {
				intersection() {
					BoxShell();
					PartSeparator(-tol/2);
				}
				HingeClip();
			}
			// Lanyard hole
			cylinder(h = boxHeight+1, r = hingeRadius-wallThickness);
			cylinder(h = wallThickness*2, r1 = hingeRadius, r2=hingeRadius-wallThickness);
		}
	}

	module Lid() {
		difference() {
			union() {
				difference() {
					BoxShell();
					PartSeparator(tol/2);
				}
				// Bearing sleeve
				translate([0,0,boxHeight-bearingHeight])
				cylinder(h = bearingHeight, r = bearingRadius+wallThickness-tol/2);
			}

			// Bearing cavity
			cylinder(h = boxHeight+1.0, r = bearingRadius);

			// Embossed text
			translate([
				hingeSpace-wallThickness+(cardWidth + rampWidth + curveCompensation)/2,
				0,
				boxHeight-0.5
			]) printLidText(lidText,h=5);
		}
	}

	translate([0,0,(flipped==true)?boxHeight:0]) rotate([(flipped==true)?180:0,0,0]) union() {
		if ((part_index == 0) || (part_index == 1)) {
			render() Base();
		}
		if ((part_index == 0) || (part_index == 2)) {
			rotate([0,0,$t*25]) render() Lid();
		}
		if ((part_index == 0) || (part_index == 3)) {
			translate([0,0,boxHeight-bearingHeight]) bearing_608();
		}
	}
}

```


[User]
I need an adjustable link for connecting things together, something like a slotted bar with holes at the ends. I want to be able to customize the hole size, the distances between the center hole and the end holes, and the overall thickness of the link. I also need to be able to adjust the width of the link itself. I want to be able to specify the dimensions in millimeters.

Specifically, I need these parameters:

*   `HoleSize`: The diameter of the holes at each end and in the middle.
*   `Distance1`: The distance from the center hole to one of the end holes.
*   `Distance2`: The distance from the center hole to the other end hole. Note that this might not be the same as Distance1 to support an offset link.
*   `Thickness`: The thickness of the link.
*   `WallWidth`:  This should control the width of the link. It would be ideal if it scaled as a percentage of the hole size, so a value of 100 would mean that the width around each hole was the same as the hole diameter. The total width of the part should be derived from this WallWidth param, and of course, the HoleSize.

The link should have three holes: one in the middle and one at each end. The holes should pass all the way through the link. The link itself should be a solid piece, so that the holes are cut out using a `difference()` operation. All the holes should be the same size, as defined by `HoleSize`.

Please generate the OpenSCAD code for this, and be sure to make it parametric using the above variables. I am happy to provide further clarifications if needed.

[Assistant]
adjustable_link.scad:
```
//Adjustable link
//By Johan Bengtsson qwerty_42@hotmail.com

//(in mm)
HoleSize=3;

//(in mm)
Distance1=30;

//(in mm)
Distance2=50;

//(in mm)
Thickness=2;

//(in percent of hole size)
WallWidth=100;

/* [Hidden] */

Width=HoleSize*(1+WallWidth/50);
MinDistance=min(Distance1,Distance2);
MaxDistance=max(Distance1,Distance2);

$fn=100;

difference()
{
	union()
	{
		cylinder(h=Thickness,d=Width);
		translate([MaxDistance,0,0]) cylinder(h=Thickness,d=Width);
		translate([0,-Width/2,0]) cube([MaxDistance,Width,Thickness]);
	}
	union()
	{
		translate([MinDistance,0,-1]) cylinder(h=Thickness+2,d=HoleSize);
		translate([MaxDistance,0,-1]) cylinder(h=Thickness+2,d=HoleSize);
		translate([0,0,-1]) cylinder(h=Thickness+2,d=HoleSize);
		translate([MinDistance,-HoleSize/2,-1]) cube([MaxDistance-MinDistance,HoleSize,Thickness+2]);
	}
}

```


[User]
Hey, I'm looking to get a custom wall mount bracket designed in OpenSCAD. I have a pretty good idea of what I need, but I'm not great at the coding part. I need a bracket that can hold square tubing or rod, and I'd like to be able to choose between one or two mounting holes.

Here are the details of the design:

**General Features:**

*   **Number of Holes:** I need the option for either 1 or 2 mounting holes (let's call this `Num_Holes`).
*   **Extension Distance:** The distance the tubing holder extends from the wall mount should be adjustable (`ED`).
*   **Tubing Width:** The width of the square tubing/rod it's designed for should be configurable (`TW`).
*   **Tubing Slot Wall Thickness:** The thickness of the material forming the walls of the tubing slot (`WT`).
*   **Mount Thickness:** The overall thickness of the mounting plate (`MT`).

**Single Hole Configuration (`Num_Holes = 1`):**

*   **Screw Hole Radius:** The radius of the screw hole (`SHR`).
*   **Screw Head Size (radius):** The radius of the recess for the screw head (`SHS`).
*   **Screw Head Depth:** The depth of the screw head recess (`SHD`).
*   The single hole bracket should be a simple design, with a cylindrical hole for the screw and another cylinder for recessing the screw head.

**Two Hole Configuration (`Num_Holes = 2`):**

*   **Screw Bracket Oversizing:** How much bigger than the tubing mount the wall bracket is (`SBO`).
*   **Screw Bracket Tab Length:** The length of the tab portion of the wall bracket (`TL`).
*   **Screw Distance:** The distance between the centers of the two screw holes (`SD`).
*   **Screw Hole Radius:** The radius of the screw holes (`SHR`). This can be the same as in the single hole version.
*   **Screw Bracket Fillet Radius:** The radius of the fillet corners where the wall bracket tabs meet the main mounting area.

I think that covers most of it. I'd like to have all of these features customizable as parameters in the OpenSCAD file. The mounting plate should have the screw holes, and then the tubing holder should extend out. I'd like the base of the bracket to have radiused or filleted corners where they meet the tubing holder mount, but other than that it can have hard edges.

I'd also like for the single screw design to have the tube holder part of the mount be flush with the back of the bracket so there's no additional mounting tab like in the double screw mount, if that makes sense.

I think I want to use the minkowski() function to create the rounded edges of the two-hole base mount to make it easier. Oh, and I also want it to be able to rotate 180 degrees on the Z axis to mirror the design when desired.

Thanks for your help! I'm really looking forward to what you come up with.

[Assistant]
square_rod_or_tubing_bracket.scad:
```
//Square Rod or Tubing Bracket
//Designed by Bryscus: Bryce B.

//Number of Holes
Num_Holes=1; //[1:2]

//Extension Distance
ED=20;

//Tubing Width
TW=19.5;

//Tubing Slot Wall Thickness
WT=5;

//Screw Hole Radius
SHR=2.4;

//(1 Hole) Screw Head Size (radius)
SHS=3.5;

//(1 Hole) Screw Head Depth
SHD=2.5;

//(2 Holes) Screw Bracket Oversizing
SBO=0;

//(2 Holes) Screw Bracket Tab Length
TL=20;

//(2 Holes) Screw Distance
SD=9;

//Mount Thickness
MT=4;

//(2 Holes) Screw Bracket Fillet Radius
FR=5;

if(Num_Holes == 1)
{
rotate([0,0,180])
difference(){
translate([0,0,ED/2+MT/2])
	cube([TW+(WT*2), TW+WT, ED+MT],center=true);
translate([0,MT/2,MT/2])
	cylinder(h=MT+5, r=SHR,$fn=60,center=true); // screw hole
translate([0,MT/2,MT-SHD])
	cylinder(h=SHD+1, r=SHS,$fn=60); // screw head hole
translate([0,WT,(ED+5)/2+MT])
	cube([TW,TW+WT,ED+5],center=true);
}
}

if(Num_Holes == 2)
{
rotate([0,0,180])
difference(){
union(){
	translate([-(TW+(WT*2)+SBO*2-FR*2)/2,-(TW+WT*2+(TL-FR)*2)/2,0])
	minkowski(){
		cube([TW+(WT*2)+SBO*2-FR*2,TW+WT*2+(TL-FR)*2,MT/2]); // Screw Bracket
		cylinder(r=FR, h=MT/2,$fn=60);
	}
	translate([0,0,ED/2+MT])
		cube([TW+(WT*2), TW+WT*2, ED],center=true); //Tube Holder Outside
}
translate([0,TL/2+WT+TW/2,MT/2])  //TW+SD
	cylinder(h=MT+5, r=SHR,$fn=60,center=true); //screw hole
translate([0,-(TL/2+WT+TW/2),MT/2])  //-(TL/2+TW/4+WT/2)
	cylinder(h=MT+5, r=SHR,$fn=60,center=true); // screw hole
translate([0,WT,(ED+5)/2+MT])
	cube([TW,TW+WT*2,ED+5],center=true); //tubing opening
}
}

```


[User]
Hey! I'm looking to design a collapsible cup, kind of like those travel cups that stack into themselves. I've got some basic ideas but need help creating a parametric OpenSCAD model.

Here's what I'm thinking:

*   **Overall Structure:** The cup will be made up of several hollow, truncated cone sections that nest inside each other. The bottom will be a simple flat cylinder.
*   **Parameters:**
    *   `WallThickness`: The thickness of the material for each cone section.
    *   `StartingTopRadius`: The radius of the top of the largest cone section (when the cup is extended).
    *   `BottomOuterRadius`: The radius of the bottom of the largest cone section.
    *   `EndingTopRadius`: The radius of the top of the smallest cone section (the one closest to the bottom).
    *   `NumberOfCones`: The total number of cone sections.
    *   `HeightOfSection`: The height of each individual cone section.
    *   `BottomThickness`: The thickness of the flat bottom.
*   **Functionality:** When "collapsed", all the cone sections should nest within the largest section, and when extended, all the cone sections should stack vertically to form a full cup.
*   **Construction:** I believe I need to create a module for the hollow cylinders first, and then use a loop that creates the nesting polygons. After that, I'll need to add the bottom.

I'd like the code to be easily configurable through these parameters. I'm not using any external libraries, but feel free to suggest if you think they'd be helpful. I'm looking for a single `.scad` file that can generate this.

Let me know if you have any questions!

[Assistant]
CollapsingCup.scad:
```
$fn = 60;
module HollowCylinders(HeightOfSection,WallThickness,BottomOuterRadius,StartingTopRadius)
{
	difference()
	{
		cylinder(HeightOfSection,BottomOuterRadius,StartingTopRadius);
		cylinder(HeightOfSection,BottomOuterRadius-WallThickness,StartingTopRadius-WallThickness);
	}
}

module NestingPolygons(WallThickness,StartingTopRadius,BottomOuterRadius,EndingTopRadius,NumberOfCones,HeightOfSection)
{
for(RadiusDifference = [0:((StartingTopRadius-EndingTopRadius)/NumberOfCones):(StartingTopRadius-EndingTopRadius)-((StartingTopRadius-EndingTopRadius)/NumberOfCones)])
	{
		HollowCylinders(HeightOfSection,WallThickness,BottomOuterRadius-RadiusDifference,StartingTopRadius-RadiusDifference);
	}
}

module CollapsingCup(WallThickness,StartingTopRadius,BottomOuterRadius,EndingTopRadius,NumberOfCones,HeightOfSection,BottomThickness)
{
	cylinder( h = BottomThickness, r = EndingTopRadius+(WallThickness/2)+((StartingTopRadius-EndingTopRadius)/NumberOfCones));
	rotate([180,0,0])
	{
	translate([0,0,-HeightOfSection])
NestingPolygons(WallThickness,StartingTopRadius,BottomOuterRadius,EndingTopRadius,NumberOfCones,HeightOfSection);
	}
}

CollapsingCup(2/5,100/5,125/5,45/5,4,60/5,4/5);

//NestingPolygons(2/5,100/5,125/5,45/5,4,60/5);

```


[User]
Hi, I'm looking to create a customizable mount for a u-lock that attaches to my bike frame. I've seen a few designs, but I need something I can tweak to fit my specific bike and lock dimensions.

Essentially, I need a holder that clamps onto the top tube of my bike and has a slot to securely hold my u-lock while I'm riding. It should be designed so that the u-lock can slide in and out easily when I'm not biking but stays put while I'm in motion. I need to be able to adjust the diameter of the top tube clamp, the diameter of the u-lock tube, and the length of the u-lock tube, as well as the wall thickness. It needs to be joined together with screws and nuts so I need to create spaces for those as well.

I'd like the design to be split into two parts: a top part and a bottom part. I'd like a function or module to generate just the top or bottom parts so I can print them individually. I'd also like a module to generate one full set (top and bottom) and another to generate a complete set, which includes two top and two bottom parts to hold the lock in two places on the bike. This will require some sort of offset to separate each of the two parts.

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

*   **TopTubeDiameter:** The diameter of my bike's top tube where the mount will attach.
*   **LockDiameter:** The diameter of the u-lock bar that will fit into the mount.
*   **LocktubeLength:** The length of the u-lock tube.
*   **Thickness:** The wall thickness of the mount.
*   **Resolution:**  The $fn parameter for curves.
*   **NutDiameter:** The outer diameter of the nuts I'll be using to hold the mount together
*   **ScrewThreadDiameter:** The diameter of the screw threads, so the screw holes are the right size
*   **ScrewholeThickness:** The share of the wall thickness that should be allocated to the screw holes

I'd also like a small offset parameter that controls the distance between the top and bottom parts.

I think that's everything. Could you provide the necessary OpenSCAD code to do this? I do not need the code to use any external libraries.

[Assistant]
customizable_lockholder.scad:
```
/* [General] */

part="Complete Lockholder Set"; // [Complete Lockholder Set, Single Lockholder Set, Top Part, Bottom Part]

// wall thickness
Thickness = 4;

// lower is faster - higher is smoother (use a low value for drafting, increase it later)
Resolution = 20; // [20:300]

/* [Bike and Lock] */

TopTubeDiameter = 32.25;

// make it a little bigger for easy insertion
LockDiameter = 20;

// longer prevents vibrations but may be clumsy
LocktubeLength = 50; // [10:150]

// between top part and bottom part - bigger values for tighter fit (I suggest to leave it at 0)
Offset = 0;

/* [Screws and Nuts] */

// A/F in this [picture](http://en.wikipedia.org/wiki/Nut_%28hardware%29#Standard_metric_hex_nuts_sizes)
NutDiameter = 9;

ScrewThreadDiameter = 5.55;

// share of the wall thickness for the screw holes
ScrewholeThickness = 0.75;

/* [Hidden] */
$fn=Resolution;

if (part == "Complete Lockholder Set") {
        completeLockHolderSet(
                diameterTopTube = TopTubeDiameter,
                lengthLock = LocktubeLength,
                diameterLock = LockDiameter,
                nutSizeOuter = NutDiameter,
                nutSizeInner = ScrewThreadDiameter,
                thickness = Thickness,
                offset = Offset,
                screwOffsetShare = ScrewholeThickness
        );
} else if (part == "Single Lockholder Set") {
        lockHolderSet(
                diameterTopTube = TopTubeDiameter,
                lengthLock = LocktubeLength,
                diameterLock = LockDiameter,
                nutSizeOuter = NutDiameter,
                nutSizeInner = ScrewThreadDiameter,
                thickness = Thickness,
                offset = Offset,
                screwOffsetShare = ScrewholeThickness
        );
} else if (part == "Top Part") {
        topPart(
                diameterTopTube = TopTubeDiameter,
                diameterLock = LockDiameter,
                nutSizeOuter = NutDiameter,
                nutSizeInner = ScrewThreadDiameter,
                thickness = Thickness,
                offset = Offset,
                screwOffsetShare = ScrewholeThickness
        );
} else if (part == "Bottom Part") {
        bottomPart(
                diameterTopTube = TopTubeDiameter,
                lengthLock = LocktubeLength,
                diameterLock = LockDiameter,
                nutSizeOuter = NutDiameter,
                nutSizeInner = ScrewThreadDiameter,
                thickness = Thickness,
                offset = Offset,
                screwOffsetShare = ScrewholeThickness
        );
} else {
        completeLockHolderSet(
                diameterTopTube = TopTubeDiameter,
                lengthLock = LocktubeLength,
                diameterLock = LockDiameter,
                nutSizeOuter = NutDiameter,
                nutSizeInner = ScrewThreadDiameter,
                thickness = Thickness,
                offset = Offset,
                screwOffsetShare = ScrewholeThickness
        );
}

// lockholder v 1.1

// Functions
// - Set of Top Part and Bottom Part
module lockHolderSet
(
	diameterTopTube = 30,
	lengthLock = 50,
	diameterLock = 15,
	nutSizeOuter = 10,
	nutSizeInner = 6,
	thickness = 5,
	offset = 2,
	screwOffsetShare = 0.75
)
{
	lengthTopTube = diameterLock + (2 * nutSizeOuter) + (3 * thickness);
	screwBarWidth = nutSizeOuter + (thickness / 2);

	translate(v = [(diameterTopTube / 2) + screwBarWidth + (1.5 * thickness), 0, 0]) {
		topPart(diameterTopTube, diameterLock, nutSizeOuter, nutSizeInner, thickness, offset, screwOffsetShare);
	}

	translate(v = [(-1) * ((diameterTopTube / 2) + screwBarWidth + (1.5 * thickness)), 0, 0]) {
		rotate(a = [0, 0, 180]) {
			bottomPart(diameterTopTube, lengthLock, diameterLock, nutSizeOuter, nutSizeInner, thickness, offset, screwOffsetShare);
		}
	}
}

// - Complete Set of 2 Top Parts and 2 Bottom Parts
module completeLockHolderSet
(
	diameterTopTube = 30,
	lengthLock = 50,
	diameterLock = 15,
	nutSizeOuter = 10,
	nutSizeInner = 6,
	thickness = 5,
	offset = 2,
	screwOffsetShare = 0.75
)
{
	lengthTopTube = diameterLock + (2 * nutSizeOuter) + (3 * thickness);
	screwBarWidth = nutSizeOuter + (thickness / 2);

	translate(v = [0, (lengthTopTube + thickness) / 2, 0]) {
		lockHolderSet(diameterTopTube, lengthLock, diameterLock, nutSizeOuter, nutSizeInner, thickness, offset, screwOffsetShare);
	}

	translate(v = [0, (-1) * ((lengthTopTube + thickness) / 2), 0]) {
		lockHolderSet(diameterTopTube, lengthLock, diameterLock, nutSizeOuter, nutSizeInner, thickness, offset, screwOffsetShare);
	}
}

// - Top Part
module topPart
(
	diameterTopTube = 30,
	diameterLock = 15,
	nutSizeOuter = 10,
	nutSizeInner = 6,
	thickness = 5,
	offset = 2,
	screwOffsetShare = 0.75
)
{
	lengthTopTube = diameterLock + (2 * nutSizeOuter) + (3 * thickness);
	screwBarWidth = nutSizeOuter + (thickness / 2);

	translate(v = [0, lengthTopTube / 2, 0]) {
		topPart1(lengthTopTube, diameterTopTube, diameterLock, screwBarWidth, nutSizeOuter, nutSizeInner, thickness, offset, screwOffsetShare);
		translate(v = [0, (-1) * (nutSizeOuter + (thickness / 2)), 0]) {
			doubleStabilityBracing(diameterTopTube, screwBarWidth, thickness, offset);
		}
		translate(v = [0, (-1) * (lengthTopTube - (nutSizeOuter + (1.5 * thickness))), 0]) {
			doubleStabilityBracing(diameterTopTube, screwBarWidth, thickness, offset);
		}
	}
}

// - Bottom Part
module bottomPart
(
	diameterTopTube = 30,
	lengthLock = 50,
	diameterLock = 15,
	nutSizeOuter = 10,
	nutSizeInner = 6,
	thickness = 5,
	offset = 2,
	screwOffsetShare = 0.75
)
{
	lengthTopTube = diameterLock + (2 * nutSizeOuter) + (3 * thickness);
	screwBarWidth = nutSizeOuter + (thickness / 2);

	translate(v = [0, lengthTopTube / 2, 0]) {
		difference() {
			union() {
				bottomPart1(lengthTopTube, diameterTopTube, lengthLock, diameterLock, screwBarWidth, nutSizeOuter, nutSizeInner, thickness, offset, screwOffsetShare);
				translate(v = [0, (-1) * (nutSizeOuter + (thickness / 2)), 0]) {
					doubleStabilityBracing(diameterTopTube, screwBarWidth, thickness, offset);
				}
				translate(v = [0, (-1) * (lengthTopTube - (nutSizeOuter + (1.5 * thickness))), 0]) {
					doubleStabilityBracing(diameterTopTube, screwBarWidth, thickness, offset);
				}
				translate(v = [0, (-1) * ((lengthTopTube - thickness) / 2), 0]) {
					lockBracing(diameterTopTube, lengthLock, thickness, offset);
				}
			}
			translate(v = [((diameterTopTube + diameterLock) / 2)+ thickness, (-1) * (lengthTopTube / 2), (lengthLock - (thickness / 2))]) {
				carveRoundTube(diameterLock, thickness);
			}
			translate(v = [((diameterTopTube + diameterLock) / 2)+ thickness, (-1) * (lengthTopTube / 2), 0]) {
				rotate(a = [180, 0, 0]) {
					difference() {
						translate(v = [0, 0, (-1) * (thickness / 2)]) {
						carveRoundTube(diameterLock, thickness);
						}
						difference() {
							translate(v = [screwBarWidth - diameterLock, 0, (-1) * thickness / 2]) {
								cube(size = [diameterLock, diameterLock + (2 * thickness) + 2, thickness + 2], center = true);
							}
							translate(v = [0, 0, (-1) * ((thickness + 4) / 2)])
							cylinder(h = thickness + 4, r = (diameterLock + thickness) / 2);
						}
					}
				}
			}
		}
	}
}

// Modules
module tube(height, diameter, thickness) {
	difference() {
		cylinder(h = height, r = ((diameter / 2) + thickness));
		translate(v = [0, 0, -1]) {
			cylinder(h = height + 2, r = diameter / 2);
		}
	}
}

module halfTube(height, diameter, thickness, offset) {
	difference() {
		tube(height, diameter, thickness);
		translate(v = [((-1) * (diameter + (2 * thickness))) / 2, (-1) * ((diameter / 2) + thickness) - 1, -1]) {
			cube([diameter + (2 * thickness), (diameter / 2) + thickness +1 + (offset / 2), height + 2]);
		}
	}
}

module screwBar(nutSizeOuter, lengthTopTube, diameterTopTube, thickness, offset, screwOffsetShare) {
	difference() {
		union() {
			hull() {
				translate(v = [((diameterTopTube + nutSizeOuter) / 2) + thickness, thickness + (offset / 2), (nutSizeOuter + thickness) / 2]) {
					rotate(a = [90, 0, 0]) {
						cylinder(r = ((nutSizeOuter + thickness) / 2), h = thickness);
					}
				}
				translate(v = [(-1) * (((diameterTopTube + nutSizeOuter) / 2) + thickness), thickness + (offset / 2), (nutSizeOuter + thickness) / 2]) {
					rotate(a = [90, 0, 0]) {
						cylinder(r = (nutSizeOuter + thickness) / 2, h = thickness);
					}
				}
				translate(v = [((diameterTopTube + nutSizeOuter) / 2) + thickness, thickness + (offset / 2), lengthTopTube - ((nutSizeOuter + thickness) / 2) ]) {
					rotate(a = [90, 0, 0]) {
						cylinder(r = ((nutSizeOuter + thickness) / 2), h = thickness);
					}
				}
				translate(v = [(-1) * (((diameterTopTube + nutSizeOuter) / 2) + thickness), thickness + (offset / 2), lengthTopTube - ((nutSizeOuter + thickness) / 2)]) {
					rotate(a = [90, 0, 0]) {
						cylinder(r = ((nutSizeOuter + thickness) / 2), h = thickness);
					}
				}
			}
			positionShells(nutSizeOuter, diameterTopTube + (2 * thickness), lengthTopTube, thickness, offset, screwOffsetShare);
		}
		translate(v = [0, 0, -1]) {
			cylinder(r = diameterTopTube / 2, h = lengthTopTube + 2);
		}
	}
}

module tubeWithBar(lengthTopTube, diameterTopTube, nutSizeOuter, thickness, offset, screwOffsetShare) {
	union() {
		halfTube(lengthTopTube, diameterTopTube, thickness, offset);
		screwBar(nutSizeOuter, lengthTopTube, diameterTopTube, thickness, offset, screwOffsetShare);
	}
}

module makeShell(diameter, thickness, offset, screwOffsetShare) {
	translate(v = [0, ((1 + screwOffsetShare) * thickness) + (offset / 2), 0]) {
		rotate(a = [90, 0, 0]) {
			cylinder(r = (diameter + thickness) / 2, h = thickness);
		}
	}
}

module makeNut(diameter, thickness, screwOffsetShare) {
	translate(v = [0, (screwOffsetShare * thickness) + 1, 0]) {
		rotate(a = [90, 0, 0]) {
			translate(v = [0, 0, (-1) * (thickness / 2)]) {
				hexagon(size = diameter, height = thickness + 2);
			}
		}
	}
}

module screwHeadHole(diameter, thickness, screwOffsetShare) {
	translate(v = [0, (screwOffsetShare * thickness), 0]) {
		rotate(a = [-90, 0, 0]) {
			cylinder(r = diameter / 2, h = thickness + 2);
		}
	}
}

module screwHole(diameter, thickness) {
	translate(v = [0, -1, 0]) {
		rotate(a = [-90, 0, 0]) {
			cylinder(r = diameter / 2, h = (2 * thickness) + 2);
		}
	}
}

module positionShells(diameter, plateSizeX, plateSizeY, thickness, offset, screwOffsetShare) {
	translate(v = [(plateSizeX + diameter) / 2, 0, ((diameter + thickness) / 2)]) {
		makeShell(diameter, thickness, offset, screwOffsetShare);
	}
	translate(v = [(plateSizeX + diameter) / 2, 0, plateSizeY - ((diameter + thickness) / 2)]) {
		makeShell(diameter, thickness, offset, screwOffsetShare);
	}
	translate(v = [(-1) * ((plateSizeX + diameter) / 2), 0, ((diameter + thickness) / 2)]) {
		makeShell(diameter, thickness, offset, screwOffsetShare);
	}
	translate(v = [(-1) * ((plateSizeX + diameter) / 2), 0, plateSizeY - ((diameter + thickness) / 2)]) {
		makeShell(diameter, thickness, offset, screwOffsetShare);
	}
}

module positionNuts(diameter, plateSizeX, plateSizeY, thickness, screwOffsetShare) {
	translate(v = [(plateSizeX + diameter) / 2, 0, ((diameter + thickness) / 2)]) {
		makeNut(diameter, thickness, screwOffsetShare);
	}
	translate(v = [(plateSizeX + diameter) / 2, 0, plateSizeY - ((diameter + thickness) / 2)]) {
		makeNut(diameter, thickness, screwOffsetShare);
	}
	translate(v = [(-1) * ((plateSizeX + diameter) / 2), 0, ((diameter + thickness) / 2)]) {
		makeNut(diameter, thickness, screwOffsetShare);
	}
	translate(v = [(-1) * ((plateSizeX + diameter) / 2), 0, plateSizeY - ((diameter + thickness) / 2)]) {
		makeNut(diameter, thickness, screwOffsetShare);
	}
}

module positionScrewHeadHoles(diameter, plateSizeX, plateSizeY, thickness, screwOffsetShare) {
	translate(v = [(plateSizeX + diameter) / 2, 0, ((diameter + thickness) / 2)]) {
		screwHeadHole(diameter, thickness, screwOffsetShare);
	}
	translate(v = [(plateSizeX + diameter) / 2, 0, plateSizeY - ((diameter + thickness) / 2)]) {
		screwHeadHole(diameter, thickness, screwOffsetShare);
	}
	translate(v = [(-1) * ((plateSizeX + diameter) / 2), 0, ((diameter + thickness) / 2)]) {
		screwHeadHole(diameter, thickness, screwOffsetShare);
	}
	translate(v = [(-1) * ((plateSizeX + diameter) / 2), 0, plateSizeY - ((diameter + thickness) / 2)]) {
		screwHeadHole(diameter, thickness, screwOffsetShare);
	}
}

module positionScrewHoles(diameterInner, diameterOuter, plateSizeX, plateSizeY, thickness) {
	translate(v = [(plateSizeX + diameterOuter) / 2, 0, ((diameterOuter + thickness) / 2)]) {
		screwHole(diameterInner, thickness);
	}
	translate(v = [(plateSizeX + diameterOuter) / 2, 0, plateSizeY - ((diameterOuter + thickness) / 2)]) {
		screwHole(diameterInner, thickness);
	}
	translate(v = [(-1) * ((plateSizeX + diameterOuter) / 2), 0, ((diameterOuter + thickness) / 2)]) {
		screwHole(diameterInner, thickness);
	}
	translate(v = [(-1) * ((plateSizeX + diameterOuter) / 2), 0, plateSizeY - ((diameterOuter + thickness) / 2)]) {
		screwHole(diameterInner, thickness);
	}
}

module nutHolesComplete(diameterOuter, diameterInner, plateSizeX, plateSizeY, thickness, offset, screwOffsetShare) {
	translate(v = [0, offset / 2, 0]) {
		union() {
			positionNuts(diameterOuter, plateSizeX, plateSizeY, thickness, screwOffsetShare);
			positionScrewHoles(diameterInner, diameterOuter, plateSizeX, plateSizeY, thickness);
		}
	}
}

module screwHeadHolesComplete(diameterOuter, diameterInner, plateSizeX, plateSizeY, thickness, offset, screwOffsetShare) {
	translate(v = [0, offset / 2, 0]) {
		union() {
			positionScrewHeadHoles(diameterOuter, plateSizeX, plateSizeY, thickness, screwOffsetShare);
			positionScrewHoles(diameterInner, diameterOuter, plateSizeX, plateSizeY, thickness);
		}
	}
}

module topPart1(lengthTopTube, diameterTopTube, diameterLock, screwBarWidth, nutSizeOuter, nutSizeInner, thickness, offset, screwOffsetShare) {
translate(v = [0, 0, (-1) * (offset / 2)]) {
		rotate(a = [90, 0, 0]) {
			difference() {
				difference() {
					tubeWithBar(lengthTopTube, diameterTopTube, nutSizeOuter, thickness, offset, screwOffsetShare);
					screwHeadHolesComplete(nutSizeOuter, nutSizeInner, diameterTopTube + (2 * thickness), lengthTopTube, thickness, offset, screwOffsetShare);
				}
	// -- Hole for Lock Tube
				translate(v = [((diameterTopTube + diameterLock) / 2) + thickness, thickness + (offset / 2) + 1, lengthTopTube / 2]) {
					rotate(a = [90, 0, 0]) {
						union() {
							difference() {
								carveRing(diameterLock, thickness);
								translate(v = [0, 0, 0]) {
									translate(v = [(-1) * ((diameterLock + thickness) / 2), 0, 0]) {
										cube([thickness, diameterLock + thickness + 2, ((thickness + 2))], true);
									}
									translate(v = [(-1) * ((diameterLock + thickness) / 2), (diameterLock + thickness) / 2, 0]) {
										cube([diameterLock + thickness + 4, thickness, ((thickness + 2))], true);
									}
									translate(v = [(-1) * ((diameterLock + thickness) / 2), (-1) * (diameterLock + thickness) / 2, 0]) {
										cube([diameterLock + thickness + 4, thickness, ((thickness + 2))], true);
									}
								}
							}
							translate(v = [screwBarWidth, 0, (thickness / 2) + 1]) {
								cube([diameterLock, diameterLock + thickness + 2, thickness + 4], true);
							}
						}
					}
				}
			}
		}
	}
}

module bottomPart1(lengthTopTube, diameterTopTube, lengthLock, diameterLock, screwBarWidth, nutSizeOuter, nutSizeInner, thickness, offset, screwOffsetShare) {
	translate(v = [0, 0, (-1) * (offset / 2)]) {
		rotate(a = [90, 0, 0]) {
			difference() {
				union() {
					difference() {
						tubeWithBar(lengthTopTube, diameterTopTube, nutSizeOuter, thickness, offset, screwOffsetShare);
						nutHolesComplete(nutSizeOuter, nutSizeInner, diameterTopTube + (2 * thickness), lengthTopTube, thickness, offset, screwOffsetShare);
					}
	// -- Lock Tube
					translate(v = [((diameterTopTube + diameterLock) / 2) + thickness, lengthLock + (offset / 2), lengthTopTube / 2]) {
						rotate(a = [90, 0, 0]) {
							tube(lengthLock, diameterLock, thickness);
						}
					}
				}
	// -- Hole for Lock Tube
				translate(v = [((diameterTopTube + diameterLock) / 2) + thickness, lengthLock + 1 + (offset / 2), lengthTopTube / 2]) {
						rotate(a = [90, 0, 0]) {
							cylinder(r = diameterLock / 2, h = lengthLock + 2);
						}
				}
			}
		}
	}
}

module stabilityBracing(diameterTopTube, screwBarWidth, thickness, offset) {
	rotate(a = [90, 0, 0]) {
		difference() {
			linear_extrude(height = thickness) {
					polygon(points = [[0, thickness], [(diameterTopTube / 2) + screwBarWidth + thickness, thickness], [0, ((diameterTopTube - offset) / 2) + thickness]], paths = [[0, 1, 2]]);
			}
			translate(v = [0, (-1) * (offset / 2), -1]) {
				cylinder(r = diameterTopTube / 2, h = thickness + 2);
			}
		}
	}
}

module doubleStabilityBracing(diameterTopTube, screwBarWidth, thickness, offset) {
	stabilityBracing(diameterTopTube, screwBarWidth, thickness, offset);
	rotate(a = [0, 0, 180]) {
		translate(v = [0, thickness, 0]) {
			stabilityBracing(diameterTopTube, screwBarWidth, thickness, offset);
		}
	}
}

module lockBracing(diameterTopTube, lengthLock, thickness, offset) {
	rotate(a = [90, 0, 0]) {
		difference() {
			linear_extrude(height = thickness) {
				polygon(points = [[0, 0], [(diameterTopTube / 2) + thickness, 0], [(diameterTopTube / 2) + thickness, lengthLock], [0, ((diameterTopTube - offset) / 2) + thickness]], paths = [[0, 1, 2, 3]]);
			}
			translate(v = [0, (-1) * (offset / 2), -1]) {
				cylinder(r = diameterTopTube / 2, h = thickness + 2);
			}
		}
	}
}

module carveRoundTube(diameter, thickness) {
	difference() {
		cylinder(h = (thickness / 2) + 1, r = ((diameter / 2) + thickness) + 1);
		rotate_extrude() {
			translate(v = [((diameter  + thickness) / 2), 0, 0]) {
				circle(r = (thickness / 2));
			}
		}
	}
}

module carveRing(diameter, thickness) {
	difference() {
		cylinder(h = thickness + 2, r = ((diameter + thickness) / 2));
		rotate_extrude() {
			translate(v = [((diameter + thickness) / 2), (thickness / 2) + 1, 0]) {
				circle(r = (thickness / 2));
			}
		}
	}
}

module hexagon(size, height) {
	// http://svn.clifford.at/openscad/trunk/libraries/shapes.scad
	/*
	 *  OpenSCAD Shapes Library (www.openscad.org)
	 *  Copyright (C) 2009  Catarina Mota
	 *
	 *  This program is free software; you can redistribute it and/or modify
	 *  it under the terms of the GNU General Public License as published by
	 *  the Free Software Foundation; either version 2 of the License, or
	 *  (at your option) any later version.
	 *
	 *  This program is distributed in the hope that it will be useful,
	 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
	 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	 *  GNU General Public License for more details.
	 *
	 *  You should have received a copy of the GNU General Public License
	 *  along with this program; if not, write to the Free Software
	 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
	 *
	*/
	boxWidth = size/1.75;
	for (r = [-60, 0, 60]) rotate([0,0,r]) cube([boxWidth, size, height], true);
}

```


[User]
I'd like to create a cylindrical object with a hollow core, and then have a series of small cubes cut out of the outer wall in a spiral pattern. The cylinder should have parameters for its height and outer radius, as well as inner radius. The cubes should be adjustable in size, and the pattern itself should be adjustable in terms of how many "spirals" there are (the "mesh"), and how vertically far the cubes travel.

So, to recap:

*   **Core Shape:** A cylinder with adjustable height, outer radius, and inner radius.
*   **Cutout Cubes:** Small cubes that are used to cut out from the cylinder’s wall. The cube size should be parametric.
*   **Spiral Pattern:** The cubes should be arranged in a spiral pattern around the cylinder. The number of spirals and the total vertical distance traveled by the spiral should be parametric.

Can you generate an OpenSCAD file that does this? I'm not using any special libraries, just plain OpenSCAD functionality. Let me know if you have any questions.

[Assistant]
para.scad:
```
mesh = 1;

difference(){
	cylinder( h=25, r=20);
	cylinder( h=25, r=15);

			for(i = [0:360/(mesh*4)]){
			rotate([0,0,mesh*4*i])
				for(j = [0:(100/(mesh*4))]){
				translate([20,0,j*mesh])
					cube(size=mesh/2, center=true);
			}
	}

}
```


[User]
I'm looking to design a parametric bracket for a 3D printer, specifically to suspend a filament spool below the top frame. I'm envisioning a bracket with a rectangular end that attaches to the frame (likely an aluminum extrusion), and a circular end that holds the spool rod. The key is that there should be a twist in the middle connecting these two ends, like a helical or spiral shape. I need it to be fully adjustable in several dimensions.

Here's what I need to be able to configure:

*   **Thickness:** The overall thickness of the bracket material.
*   **Width:** The width of the bracket at its narrowest point (where the twist happens).
*   **Length:** The total vertical distance from the top of the rectangular attachment to the bottom of the rod.
*   **Twist Angle:** The angle (in degrees) between the rectangular and circular ends.
*   **Bar Width/Height:** The dimensions of the rectangular end that attaches to the frame.
*   **Slot Width/Thickness:** The dimensions of a slot in the rectangular end for a cable tie (it should be possible to set this to 0 to omit).
*   **Rod Diameter:** The diameter of the circular end that holds the spool rod.
*   **Part Selection:**  The ability to generate either just the left bracket, just the right bracket, or both.

I'd also like the design to work such that a bracket is mirrored and translated in the X direction to obtain the 'pair'.

I'm looking for a well-structured OpenSCAD design for this, and I'd prefer if you used modules as much as possible to organize the code. I'm not very experienced with the program, but I think I understand the basics. I would not be opposed to the use of BOSL2 in the design if it simplifies things, but it isn't strictly necessary.

[Assistant]
TwistedSpoolHanger.scad:
```
/* [Overall] */

// (mm)
Thickness = 2.5;

// at narrowest point (mm)
Width = 15;

// from top of bar to bottom of rod (mm)
Length = 120;

//(degrees)
TwistAngle = 60; // [0:90]

PartToMake = "both";	// [both,left only,right only]

/* [Bar End] */

// (mm)
BarWidth = 15;

// (mm)
BarHeight = 15;

// for cable tie, 0 to omit (mm)
SlotWidth = 5;

// (mm)
SlotThickness = 2;

/* [Rod End] */

// (mm)
RodDiameter = 20;

/* Derived values */
TwistWidth = 1000 * 2;
EndLength = max(BarHeight * 1.5, RodDiameter * 1.5);
TwistLength = Length - 2 * EndLength;

module BarEnd() {
	rotate([0, -TwistAngle/2, 0]) {
		translate([-BarWidth-Thickness*1.5, Length/2 - BarHeight/3, -TwistWidth/2])
			cube([Thickness, BarHeight/3 + Thickness, TwistWidth]);
		translate([-BarWidth-Thickness*1.5, Length/2, -TwistWidth/2])
			cube([BarWidth + Thickness * 2, Thickness, TwistWidth]);
		difference() {
			translate([-Thickness/2, TwistLength/2, -TwistWidth/2])
				cube([Thickness, EndLength + Thickness, TwistWidth]);
			translate([-Thickness, (Length - SlotThickness) / 2 - BarHeight, -SlotWidth/2])
				cube([Thickness * 2, SlotThickness, SlotWidth]);
		}
	}
}

module RodEnd() {
	rotate([0, TwistAngle/2, 0]) {
		translate([-(Thickness + RodDiameter)/2, -(Length - RodDiameter)/2, 0])
			difference() {
				cylinder(h=TwistWidth, center=true, r=RodDiameter/2 + Thickness);
				cylinder(h=TwistWidth, center=true, r=RodDiameter/2);
				translate([-RodDiameter, 0, -TwistWidth])
					cube([RodDiameter*2, RodDiameter, TwistWidth*2]);
			}
		translate([-Thickness/2, -(Length - RodDiameter)/2, -TwistWidth/2])
			cube([Thickness, EndLength - RodDiameter/2, TwistWidth]);
	}
}

module TwistyPart() {
	rotate([90, 0, 0])
		linear_extrude(height=TwistLength + 0.01, center=true, twist=TwistAngle, slices=20, convexity=10)
			rotate([0, 0, TwistAngle/2])
				square([Thickness, (Width + Thickness) / cos(TwistAngle/2)], center=true);
}

module Complete() {
	translate([0, 0, Width/2]) {
		intersection() {
			cube([1000, 1000, Width], center=true);
			union() {
				BarEnd();
				RodEnd();
				TwistyPart();
			}
		}
	}
}

shift = PartToMake != "both" ? 0 : sin(TwistAngle/2) * Width/2 + Thickness * 3;
if (PartToMake != "right only")
	translate([-shift, 0, 0])
		Complete();
if (PartToMake != "left only")
	translate([shift, 0, 0])
		mirror([1, 0, 0])
			Complete();

```


[User]
Hey there, I'm looking to get a parametric gauntlet design, something like a wrap that can be heated and formed. I have some starting measurements and ideas, but I need help putting it all into a working OpenSCAD file (or files if it makes sense to split it up).

Basically, I'm trying to replicate the design concept from this post: https://plus.google.com/101556970765701026066/posts/52eVxAsYpZG. The idea is a flat, laser cut piece that can be heated and shaped.

Here's a breakdown of the parameters and the overall design:

**Measurements & Parameters:**

*   **`wrist`**: This is the wrist joint width measurement from lateral to medial side (e-NABLE measurement 5). Default value is 35.97mm.
*   **`len`**: The overall length of the gauntlet. Example: Half the distance from the elbow to the wrist. Default value is 100mm.
*   **`width`**: The width of the gauntlet at its widest point (middle forearm, near the elbow), measured from lateral to medial sides. Default value is 46.35mm.
*   **`rail`**: Height of the side rails, probably something like 10mm.
*   **`thick`**: Thickness of the side rails, probably around 5mm.
*  **`thin`**: Thickness of the rest of the gauntlet, like the main flat section. Maybe around 2mm.
*   **`padding`**: A parameter to add padding to the `wrist` and `width` measurements, before generating the geometry; e.g. maybe around 5mm.
*   **`spacing`**: Distance between the bars that will make up a pattern in the middle section, maybe 10mm.
*   **`bar`**: The thickness of those bars, maybe around 5mm.
*   **`bolt`**: Diameter of the bolt for the wrist pivot, likely around 5mm
*   **`slotLen`**: Length of the slots, probably 25mm
*   **`slotH`**: Height of the slots, probably 2mm

**Design Concept:**

The gauntlet is basically a curved rectangular shape, wider at the 'elbow' end than at the 'wrist' end.

1.  **Side Rails:** There should be rails along the two long edges of the design. These will be thicker than the main surface. The basic shape is like two trapezoids, with the wider end at the elbow.
2.  **Main Surface:** The area between the rails will be cut out with a bar pattern.
3.  **Bar Pattern:** This is a series of circular cutouts (with the bars between them), forming a pattern in the middle. The cutouts will have the bar width and be spaced at the 'spacing' parameter.  The cutouts shouldn't reach the rail edges.
4. **Pivot Bolt Holes:** There should be bolt holes at the wrist end for a pivot.
5. **Slots:** There should be three sets of slots: one near the wrist, one a third of the way up, and another two thirds up. These should be angled appropriately with the shape of the gauntlet. The height is `slotH` and length is `slotLen`
6.  **Calculated Variables:** You'll need to calculate the x coordinates for the edges of the shape based on the `wrist`, `width`, and `padding` parameters, along with the `rail` parameter (see the `wristX` and `wideX` parameters in the attached code). Similarly, the angle will need to be calculated using the length, and x coordinate differences, using the `atan()` function.

I'm not particular about the shape of the slots right now, but I do like the idea of having the slots at the top and bottom of the gauntlet. I'd prefer not to depend on specific libraries if possible, but if it really simplifies things, I'm okay with it.

Can you put together an OpenSCAD file or files to generate this, please?

[Assistant]
ParametricGauntletWrap.scad:
```
/* [Measurements] */
// See Measurement Guide at:
// https://docs.google.com/a/popk.in/document/d/1LX3tBpio-6IsMMo3aaUdR-mLwWdv1jS4ooeEHb79JYo for details.
// The default values are the ones from the photo in that document.

// e-NABLE measurement 5, Wrist Joint distance from lateral to medial side
wrist = 35.97;
// Length of gauntlet, e.g. half distance from elbow to wrist.
len = 100;
// Distance between lateral and medial side of the middle forearm (end of gauntlet closest to elbow)
width = 46.35;
// height of side rail
rail = 10;
// thickness of side rails
thick=5;
// thickness of rest of gauntlet
thin=2;
// thickness of padding
padding = 5;
// spacing of bars
spacing = 10;
// thickness of bars
bar=5;
// diameter of bolt for wrist pivot
bolt = 5;
// Length of slots
slotLen = 25;
// Height of slots
slotH = 2;

/* [hidden] */

pi=3.1415926;

wristX = (wrist+2*padding)*pi/2-rail/2;
wideX = (width+2*padding)*pi/2-rail/2;

diff = wideX-wristX;
angle = atan(diff/len);
echo(diff,angle);

echo(len, wristX, wideX);

difference() {
union() {
difference() {
	union() {
		hull() {
			translate([wristX,0]) cylinder(d=rail, h=thick);
			translate([wideX,-len]) cylinder(d=rail, h=thick);
			}
		hull() {
			translate([-wristX,0]) cylinder(d=rail, h=thick);
			translate([-wideX,-len]) cylinder(d=rail, h=thick);
			}
		scale([3,1,1])hull() {
			translate([0,-(wristX)]) cylinder(d=rail, h=thin);
			translate([0,-len]) cylinder(d=rail, h=thin);
			}
		difference() {
			hull() {
				translate([wristX,-bar]) cylinder(d=rail, h=thin);
				translate([wideX,-len]) cylinder(d=rail, h=thin);
				translate([-wristX,-bar]) cylinder(d=rail, h=thin);
				translate([-wideX,-len]) cylinder(d=rail, h=thin);
				}
			translate([0,0,-1]) cylinder(r=wristX-rail/2, h=thick+2);
			translate([0,0,-.5]) for (r=[wristX-rail/2+bar:spacing:len+3*spacing]) {
				core(r,bar,thin+1);
				}
			}
		}
	}

hull() {
	translate([-wideX,-len]) cylinder(d=rail, h=thin);
	translate([wideX,-len]) cylinder(d=rail, h=thin);
	}
}
	translate([wristX,0,-2]) cylinder(d=bolt, h=thick+4);
	translate([-wristX,0,-2]) cylinder(d=bolt, h=thick+4);
	translate([wideX,-len,-1]) rotate([0,0,angle]) cube([2,25,thick+2]);
	translate([-wideX-slotH,-len,-1]) rotate([0,0,-angle]) cube([2,25,thick+2]);
	translate([wideX-diff/3,-len*.67,-1]) rotate([0,0,angle]) cube([slotH,25,thick+2]);
	translate([-wideX+diff/3-slotH,-len*.67,-1]) rotate([0,0,-angle]) cube([slotH,25,thick+2]);
	translate([wideX-diff*.67,-len/3,-1]) rotate([0,0,angle]) cube([slotH,25,thick+2]);
	translate([-wideX+diff*.67-slotH,-len/3,-1]) rotate([0,0,-angle]) cube([slotH,25,thick+2]);

}

module core(r,t,h) {
	difference() {
		cylinder(r=r+t, h=h);
		translate([0,0,-1]) cylinder(r=r, h=h+1);
		}
	}
```


[User]
Hey, I'm working on an 8x8x8 LED cube and I need a jig to help me solder all the LEDs. I've already got a working design, but it's kind of hardcoded for my specific dimensions, and I'd like something more flexible, and that incorporates a few new ideas.

I have 4 vertical walls that hold the LEDs in place, and they're spaced apart so that when you place a row of LEDs across them, the LEDs are at the correct spacing for my cube.  The jig has a base for all the walls to sit on, and the walls and base are attached as one part to make it easier to work with.  There are holes through each wall that the LEDs are placed through. These need to be accurately spaced, but I also need them to be parametric.  Also there's a difference in size between the left and right hole, this is because my printer prints holes slightly too small and the right hand side gets squished. The parameters to set for that would be good, as well as the horizontal offset.

Currently my jig has screw holes on the base for mounting, but it would be great if those could be made parametric too, including the locations of the holes (one at the front and one at the back of the base). I'd also like an indicator on the jig to know which side is nearest the origin; a small cylinder is fine for this.

It needs to be fully parametric, so I can change the number of walls, their spacing, the LED hole diameter, hole offset, and all the other dimensions of the jig. The number of vertical walls will also need to drive the floor width; and of course, all the hole locations. I'd like to be able to specify the hole diameter, the height offset of the holes on the jig walls, the thickness of the wall, the height of the wall, as well as the length of the holes. The placement of the mounting holes should be an offset from the sides too, so that's a good parameter to have.  And finally, the size of the indicator cylinder should be a parameter too.

Could you design a parametric OpenSCAD file that can handle all of this? I'd be really grateful. I don't need libraries, but if you do use any, please let me know which ones they are.

[Assistant]
8x8x8Cube_VerticalJig3.scad:
```
// Wall Parameters
wallCount = 4; // Total number of vertical walls
wallWidth = 60;
wallHeight = 10;
wallDepth = 3;
wallSeparation = 40;
floorHeight = 1;

// Hole Parameters
holeR = (4.92 / 2.0) + 0.05;
holeL = (wallSeparation+wallDepth+wallDepth)*wallCount + 2;
holeXOffset = (wallWidth - wallSeparation) / 2;
holeZoffset = 8; // How high should the LED holes be?
holeRightFudge = 0.10; // my printer prints this hole too small

// Mounting wings Parameters
mountWing = wallSeparation/3; // How deep
mountingScrewHoleR=1.5;

// Computed variables
wallMax = wallCount - 1;

$fn=16; // higher # means smoother cylinders

module Wall()
{
	union()
	{
		// Front Wall -- Always printed
		cube([wallWidth, wallDepth, wallHeight]);

		// Back Walls -- Print as many as requested
		for (n=[1:wallMax])
		{
			translate([0,wallSeparation*n,0]) cube([wallWidth, wallDepth, wallHeight]);
		}

		// Floor and mounting wings
		translate([0,-mountWing,0])
		cube([wallWidth, wallMax*wallSeparation + wallDepth + 2*mountWing, floorHeight]);
	}
}

module LEDHolePuncher()
{
	// Left hole
	translate([holeXOffset,-wallDepth,holeZoffset])
		rotate([-90,0,0])
			cylinder(h=holeL, r=holeR);

	// Right hole
	translate([wallWidth-holeXOffset,-wallDepth,holeZoffset])
		rotate([-90,0,0])
			cylinder(h=holeL, r=holeR+holeRightFudge);
}

module MountingHoles()
{
	// Front mount holes
	translate([wallWidth/2,-wallSeparation/6,0])
		cylinder(h=floorHeight,r=mountingScrewHoleR);

	// Rear mount holes
	translate([wallWidth/2,(wallMax*wallSeparation)+ wallDepth +(wallSeparation/6),0])
		cylinder(h=floorHeight,r=mountingScrewHoleR);
}

module Indicator()
{
	translate([0,-wallSeparation/3,0])
		cylinder(h=floorHeight,r=3);
}

module Jig()
{
	difference()
	{
		Wall();
		LEDHolePuncher();
		MountingHoles();
		Indicator(); // Indicate which side is nearest origin in case we need to make adjustments then we'll know which hole is which.
	}
}

Jig();

```


[User]
Hey, I'm looking to design a mold for flexible joints, kind of like the ones used in the "Flexy Hand" project. I need the ability to create both the positive joint shapes (for 3D printing the joint directly) and the negative molds (for casting them in silicone or similar).

The joints themselves have a cylindrical end, a rectangular middle section, and another cylindrical end. I'll need to specify the diameter of the cylinders, the thickness of the middle part, the overall width of the joint, and the total length.

I also want to be able to make several of these joints in one go, either in a single wide mold or multiple shorter ones, so I need to specify how many of each joint size I want, as well as the depth of the mold/print (number of joints in the width), and a padding parameter for spacing between them.

Specifically, I need three different sizes of joints: "Large," "Small," and "Custom." The Large and Small sizes will have predefined dimensions, but the custom size I need to be able to adjust all the dimensions for.

I'd like the mold to be labeled, including the dimensions of the custom joints, and to have some padding so that the labels aren't right up against the edge. Also, the labels should be able to be on the top or bottom of the mold depending on the orientation of the joint.

I'll be using OpenSCAD to create this, and I think I'll also need the `write/Write.scad` library for the labeling. The final design will need to include all the parameters as variables at the top, so I can easily change them. Can you generate the necessary `.scad` files for me?

[Assistant]
flexy.scad:
```
// FLEXY JOINT developed by Dale Price and Nick Parker
// based on Flexy Hand by Gyrobot

// Parameters designed to work with Thingiverse Customizer:

// Make a positive (the joint itself) or negative (mould)?
negative = 1; // [1:Negative mould,0:Positive]

// Mould/print depth: print multiple joints as one wide one and then cut them to size?
depth = 1; // [1:20]

// Spacing between multiple joints
padding = 3;

// How many Flexy Hand Large joints?
flexy_large_num = 4;

// How many Flexy Hand Small joints?
flexy_small_num = 11;

// How many custom sized joints?
custom_num = 0;

// Label for this mold
label = "Flexy Joints";

/* [Custom Sizes] */

// Diameter of end cylinders
custom_dia = 2;

// Thickness of joint middle
custom_thick = 1;

// Width of joint
custom_width = 1;

// Overall length of joint
custom_length = 10;

/* [Hidden] */

flexy_large_dia = 6.97;
flexy_large_thick = 4;
flexy_large_width = 16;
flexy_large_length = 18;

flexy_small_dia = 4.98;
flexy_small_thick = 2;
flexy_small_width = 12;
flexy_small_length = 15;

text_line_height = 4;

$fn = 50;

//=====================================

use <write/Write.scad>

flexy_large_total_w = ceil(flexy_large_num / depth) * (padding + flexy_large_dia);
flexy_small_total_w = ceil(flexy_small_num / depth) * (padding + flexy_small_dia);
custom_total_w = ceil(custom_num / depth) * (padding + custom_dia);

mould_x = flexy_large_total_w + flexy_small_total_w + custom_total_w + 2 * padding;
mould_y = max(flexy_large_width, flexy_small_width, custom_width) * depth;
mould_z = max(flexy_large_length, flexy_small_length, custom_length) + 2 * padding + 2 * text_line_height;

custom_text = str("d=",custom_dia,",t=",custom_thick,",w=",custom_width,",l=",custom_length);

mould_joint_width = depth * max(flexy_large_width, flexy_small_width, custom_width);

module flexy_joint(dia, thick, width, length) {
	translate([dia/2, -dia/2, 0]) {
		cylinder(d=dia, h=width, center=false);
		translate([0, -thick/2, 0])
			cube([length - dia, thick, width]);
		translate([length - dia, 0, 0])
			cylinder(d=dia, h=width, center=false);
	}
}

module flexy_large_joint(dia=flexy_large_dia, thick=flexy_large_thick, width=flexy_large_width, length=flexy_large_length) {
	flexy_joint(dia, thick, width, length);
}

module flexy_small_joint(dia=flexy_small_dia, thick=flexy_small_thick, width=flexy_small_width, length=flexy_small_length) {
	flexy_joint(dia, thick, width, length);
}

module mould() {
	difference() {
		cube([mould_x, mould_y, mould_z]);
		translate([padding,-1,mould_z - text_line_height-0.5]) rotate([90,0,0])
			write(label, h=text_line_height, t=-1.5);
	}
}
module joint_array(depth = 1, mould = 0) {
	translate([padding,padding,0]) {
		//make flexy large joints
		for(i = [0 : 1 : ceil(flexy_large_num / depth - 1)]) {
			translate([i * (flexy_large_dia + padding),0,0])
				rotate([0,0,90]) {
						if (mould == 0) flexy_large_joint(width=flexy_large_width*depth);
						if (mould == 1) flexy_large_joint(width=mould_joint_width);
				}
		}
		//text label
		if (flexy_large_num > 0) {
			translate([0,-5,mould_y])
			write("Flexy Large", h=text_line_height, t=-1.8);
		}
		//make flexy small joints
		translate([flexy_large_total_w, 0, 0]) {
			for(i = [0 : 1 : ceil(flexy_small_num / depth - 1)]) {
				translate([i * (flexy_small_dia + padding),0,0])
					rotate([0,0,90]){
						if (mould == 0) flexy_small_joint(width=flexy_small_width*depth);
						if (mould == 1) flexy_small_joint(width=mould_joint_width);
					}
			}
			if (flexy_small_num > 0) {
				translate([0,-5,mould_y])
					write("Flexy Small", h=text_line_height, t=-1.8);
			}
		}
		//make custom joints
		translate([flexy_large_total_w + flexy_small_total_w, 0, 0]) {
			for(i = [0: 1: ceil(custom_num / depth - 1)]) {
				translate([i * (custom_dia + padding), 0, 0])
					rotate([0,0,90]){
						if (mould == 0)flexy_joint(dia=custom_dia, thick=custom_thick, width=custom_width * depth, length=custom_length);
						if (mould == 1) flexy_joint(dia=custom_dia, thick=custom_thick, width=mould_joint_width, length=custom_length);
					}
			}
			if (custom_num > 0) {
				translate([0,-5,mould_y]) {
					write(custom_text, h=text_line_height, t=-1.8);
				}
			}
		}
	}
}

if ( negative == false ) {
	joint_array(depth=depth, mould=0);
}
else {
	difference() {
		mould();
		rotate([90,0,0]) translate([0,text_line_height,-mould_joint_width]) scale([1,1,1.1]) joint_array(depth=depth, mould=1);
	}
}

```


[User]
I'd like to design a tool for working with SMD components, similar to how lead benders help with through-hole parts. I want to be able to easily and consistently bend the leads of common SMD sizes for prototyping and repair.

The basic idea is a flat plate with indentations or cutouts that match the dimensions of various SMD package sizes. These cutouts should be sized to hold the SMD component snugly, with a small amount of clearance for printing tolerances. I'd like the tool to include the following SMD package sizes: 0201, 0402, 0603, 0805, 1206, 1210, 1217, 2010, 2020, 2045, and 2512.  These should all be in a single plate and it would be nice to have their names labeled next to their respective cutouts.

The plate itself should have a base height, which should be adjustable via a parameter. A nice default would be 12 mm. I also need a parameter to control the printing distance or tolerance used for the cutouts. 0.4mm would be a good default for this. Finally, I’d also like to be able to easily turn the labels on and off and also make it possible to set them to random on/off, so I need a switch or an option for turning them on, off, or randomly deciding.

It would be excellent if you could design a parametric OpenSCAD file for this, with parameters for the base height, the printing tolerance, and the on/off/random setting for the text labels. I also want to use "Arial" font for labels.

Could you please create the OpenSCAD file(s) needed for this? I don't think I need any external libraries.

[Assistant]
PCB-AssemblingFormerPlateSMD_V3.scad:
```
// Bestückungshilfe für Elektronikbauteile
// Platinen Bestückungs Biege Tool
// PCB-Assembling Forming Tool
// STEVE6330 > 12.10.2013

//01/2018: Makkuro: Modified Version V3 for SMD components.

//Do write the codes?
Write_Codes="yes"; //["yes","no","maybe"]

//Height of the tool
heightbasis=12; //[2:40]

//Printing distance so the SMDs fit in snugly
printdist=.4;

//font name
fontname="Arial";

//-------------------------------------

//construct it:
difference()
{
 	scale([.5,.8,1])
		BasisKoerper();
	translate([0,0,heightbasis+.1])
		smds();
}

// Basis Körper
 module  BasisKoerper()
{
  color  ([1,0.2,0.2]){
  linear_extrude( height = heightbasis, center=false,
               convexity = 10, twist = 0,$fn = 20)
  polygon(points = [
  [0.00,0.00],
  [0.00,8.75],
  [32.00,8.75],
  [33.00,7.30],
  [67.00,7.30],
  [68.00,6.30],
  [102.00,6.30],
  [103.00,4.75],
  [120.00,4.75],
  [121.00,3.70],
  [133.00,3.70],
  [133.00,-3.70],
  [121.00,-3.75],
  [120.00,-4.75],
  [103.00,-4.75],
  [102.00,-6.30],
  [68.00,-6.30],
  [67.00,-7.30],
  [33.00,-7.30],
  [32.00,-8.75],
  [0.00,-8.75]
  ]
 ,paths =
 [[0,1,2,3,4,5,6,7,8,9,10,11,
   12,13,14,15,16,17,18,19,20]]);
 }
}

module writetext(textstr,textsize,textheight)
{
    linear_extrude(height=textheight,convexity = 10)
        text(textstr,size=textsize,font=fontname,halign="right",valign="baseline");
}

module smds()
{
//length,width,height
smdsizes=[[0.30,0.60,0.25],
			[.5,1,0.35],
			[0.8,1.6,0.50],
			[1.25,2,0.50],
			[1.6,3.2,0.60],
			[2.6,3.2,0.50],
			[3.00,4.20,0.900],
			[2.6,5,0.70],
			[5.08,5.08,0.90],
			[5.00,11.50,0.90],
			[3.1,6.3,0.60]];
smdnames=["0201",
			"0402",
			"0603",
			"0805",
			"1206",
			"1210",
			"1217",
			"2010",
			"2020",
			"2045",
			"2512"];

	for (i=[0:len(smdsizes)-1])
	{
		translate([(len(smdsizes)-.5-i)*6,0,-smdsizes[i][2]/2])
		{
			cube([smdsizes[i][0]+printdist,smdsizes[i][1]+printdist,smdsizes[i][2]+printdist],center=true);
			if(Write_Codes=="yes" || (Write_Codes=="maybe" && rands(0,10,1)[0]>5) )
				translate([1.5,(len(smdsizes)-i)*.3-5,-1.1])
				{
                    rotate([90,-90,0])
                        writetext(smdnames[i],3,10);
                }
		}
	}
}

```