[User]
I'd like to create a customizable luggage tag using OpenSCAD. It should have a rectangular base with rounded corners, and I need to be able to put text on it, either engraved, embossed, or hidden inside. Here are the parameters I'm thinking of:

**Text:**

*   Up to 10 lines of text, each line can be specified by the user.
*   The user should be able to specify the font to use. I'd like options for "orbitron.dxf", "Letters.dxf", "knewave.dxf", "BlackRose.dxf", and "braille.dxf." These are from the `write/Write.scad` library, so make sure you use that library.
*   The user can specify the font size in mm.
*   The user should be able to adjust the letter spacing.
*   The user should be able to adjust line spacing.
*   The user should be able to choose an engraving depth (deep, half, shallow), an embossing height (little, heavy), or have the text hidden inside the tag. I'd like to use percentages for this - -80% for deep engraving, -50% for half-way engraving, -10% for shallow engraving, 0% for hidden, 10% for light embossing and 25% for heavy embossing, based on the overall plate thickness.

**Plate:**

*   The user can specify the thickness of the tag in mm.
*   The user can specify the radius of the rounded corners in mm.
*   There needs to be a hole at the top of the tag for attaching it to luggage. The user should be able to specify the length and width of that hole in mm. I'd like it to be a slot, not just a round hole.

I need the text to be centered relative to the overall plate and should scale up as more text lines are added.

[Assistant]
uploads-f4-ec-de-9b-86-Luggage+label+Customizer+2013-11-01.scad:
```
/*
OpenSCAD-File to generate a Customized luggage label
2013-11-01 - kowomike

Needs write.scad as found here:
https://github.com/rohieb/Write.scad

or here:
http://www.thingiverse.com/thing:16193
*/

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

use <write/Write.scad>  //Change to directory where write.scad resides;

// Enter Text here
// Use up to 10 lines as needed; for alignment to center or right, use spaces

/* [Text] */
// You can use (up to) 10 lines for text
line_1="Just enter";
line_2="name and";
line_3="address";
line_4="";
line_5="";
line_6="";
line_7="";
line_8="";
line_9="";
line_10="";

/* [Text options] */
//Choose text engraving, embossing oder hiding inside
text_style=-80; // [-80:Deep engraving (80 %),-50:Half way through engraving (50 %),-10:Shallow engraving (10 %),0: Hide text inside (takes 66 %),10:Little embossing (10 %),25:Heavy embossing (25 %) ]

font="orbitron.dxf"; //[write/orbitron.dxf:Futuristic,write/Letters.dxf:Basic,write/knewave.dxf:Round,write/BlackRose.dxf:Classic,write/braille.dxf:Braille]

//Height of characters [mm]
fontsize=8;  //[5:20]

letter_spacing=1; //[-2:5]
letterspacing=1.0+letter_spacing/10;

line_spacing=2; //[0:5]
linespacing=0.7+line_spacing/10;

/* [Plate options] */

// [mm]
plate_thickness=3; //[1:5]

//Radius of plate corners [mm]
corner_radius=3; //[1:10]

// [mm]
slitlength=12; //[0:30]

// [mm]
slitwidth=4; //[0:10]

/* [Hidden] */

//Copy single text variables into array
text=[
line_1,
line_2,
line_3,
line_4,
line_5,
line_6,
line_7,
line_8,
line_9,
line_10
];

//Define additional parameters
charlength=0.686;
charheight=1.45;
descenderfactor=0.25;

//Calculate margins
margin=2*sqrt(corner_radius);

//Calculate space for slit
insertlength=slitwidth+margin;

//Thickness of text when hidden
hiddenheight=66;

//Find out maximum characters for first 10 lines for centering
maxtextchars = max(len(text[0]),len(text[1]),len(text[2]),len(text[3]),len(text[4]),len(text[5]),len(text[6]),len(text[7]),len(text[8]),len(text[9]));

//Find out how many lines do contain text
tl=[
len(text[9])>0 ? 10 : 0,
len(text[8])>0 ? 9 : 0,
len(text[7])>0 ? 8 : 0,
len(text[6])>0 ? 7 : 0,
len(text[5])>0 ? 6 : 0,
len(text[4])>0 ? 5 : 0,
len(text[3])>0 ? 4 : 0,
len(text[2])>0 ? 3 : 0,
len(text[1])>0 ? 2 : 0,
len(text[0])>0 ? 1 : 0,
];

textlines=max(tl[0],tl[1],tl[2],tl[3],tl[4],tl[5],tl[6],tl[7],tl[8],tl[9]);

//Calculate plate size based on Text
linelength=maxtextchars*charlength*fontsize+(letterspacing-1)*(maxtextchars-1)*charlength*fontsize;
lineheight=charheight*fontsize;

//Part of plate with text
difference () {
	//Plate
	translate ([0,-lineheight*(textlines-1)-(linespacing-1)*lineheight*(textlines-1)-margin,0])
	cube ([linelength+margin*2+insertlength,+lineheight*(textlines-1)+(linespacing-1)*lineheight*(textlines-1)+margin+lineheight+margin,plate_thickness]);

	//"Add" Text if engraved
	if (text_style<0) {
	translate ([margin+insertlength,0,0])
		union () {
			for (i=[0:textlines-1]) {
			translate ([0,-lineheight*i+descenderfactor*lineheight-(linespacing-1)*lineheight*i,plate_thickness+plate_thickness*text_style/100-0.05])
			write(text[i],t=abs(text_style)*plate_thickness/100+0.1,h=fontsize,font=font,space=letterspacing);
			}
		}
	}

	if (text_style==0) {
	translate ([margin+insertlength,0,0])
		union () {
			for (i=[0:textlines-1]) {
			translate ([0,-lineheight*i+descenderfactor*lineheight-(linespacing-1)*lineheight*i,plate_thickness+plate_thickness*text_style/100-0.05-(plate_thickness+(plate_thickness*hiddenheight/100))/2])
			write(text[i],t=hiddenheight*plate_thickness/100+0.1,h=fontsize,font=font,space=letterspacing);
			}
		}
	}

	//Cut rounded corners
	//Top Right
	translate ([margin+insertlength,0,0])
	translate ([linelength+margin-corner_radius,lineheight+margin-corner_radius,-0.05])
	difference () {
		cube ([corner_radius*2,corner_radius*2,plate_thickness+0.1]);
		translate ([0,0,-0.1])
		cylinder (r=corner_radius,h=plate_thickness+0.2,$fn=100);
	}

	//Bottom Right
	translate ([margin+insertlength,0,0])
	translate ([linelength+margin-corner_radius,-lineheight*(textlines-1)-(linespacing-1)*lineheight*(textlines-1)-margin+corner_radius,-0.05])
	difference () {
		translate ([0,-corner_radius*2,0])
		cube ([corner_radius*2,corner_radius*2,plate_thickness+0.1]);
		translate ([0,0,-0.1])
		cylinder (r=corner_radius,h=plate_thickness+0.2,$fn=100);
	}

	//Top Left
	translate ([0,0,0])
	translate ([corner_radius,lineheight+margin-corner_radius,-0.05])
	difference () {
		translate ([-corner_radius*2,0,0])
		cube ([corner_radius*2,corner_radius*2,plate_thickness+0.1]);
		translate ([0,0,-0.1])
		cylinder (r=corner_radius,h=plate_thickness+0.2,$fn=100);
	}

	//Bottom Left
	translate ([0,0,0])
	translate ([corner_radius,-lineheight*(textlines-1)-(linespacing-1)*lineheight*(textlines-1)-margin+corner_radius,-0.05])
	difference () {
		translate ([-corner_radius*2,-corner_radius*2,0])
		cube ([corner_radius*2,corner_radius*2,plate_thickness+0.1]);
		translate ([0,0,-0.1])
		cylinder (r=corner_radius,h=plate_thickness+0.2,$fn=100);
	}

	//Cut out hole
	translate ([margin,-lineheight*(textlines/2-1)-(linespacing-1)*lineheight*(textlines/2-1)-slitlength/2+slitwidth/2,-0.05])
	union () {
		translate ([slitwidth/2,slitlength-slitwidth,0])
		cylinder (r=slitwidth/2,h=plate_thickness+0.1,$fn=100);
		cube ([slitwidth,slitlength-slitwidth,plate_thickness+0.1]);
		translate ([slitwidth/2,0,0])
		cylinder (r=slitwidth/2,h=plate_thickness+0.1,$fn=100);
	}
}  //End difference

//Add text if embossed
if (text_style>0) {
	translate ([margin+insertlength,0,0])
		color ("YellowGreen")
		union () {
			for (i=[0:textlines-1]) {
			translate ([0,-lineheight*i+descenderfactor*lineheight-(linespacing-1)*lineheight*i,plate_thickness])
			write(text[i],t=abs(text_style)*plate_thickness/100+0.1,h=fontsize,font=font,space=letterspacing);
			}
}
}

```


[User]
I'm looking for an OpenSCAD design for a "sock bone" – basically, a clip to hold a pair of socks together. I've seen some designs, and I want one that is customizable for different sock sizes.

The basic shape is like a dog bone. It needs to have a central rectangular section with circles on each end, but with a large slot cut out of the center of the rectangle. There should also be two smaller circles that complete the slot on either end of the rectangle.

Here's what I'm thinking for parameters:

*   `length`: The overall length of the clip. This will correspond to the folded length of my socks.
*   `width`: The thickness of the folded sock. This will determine how "deep" the central section is.
*   `thickness`: The thickness of the plastic itself.
*   `height`: The height of the linear extrude. It needs to be enough so that the sock bone doesn't easily bend.

The circles on the ends should connect to the edges of the rectangle, and their radius should be slightly less than half the `width`. Specifically, `radius = width*(8/13)`.  The center slot should be cut so that it takes out the majority of the rectangle's center. The little end caps should have circles with radius `0.7 * thickness`.

I think I would prefer to have this created as a single `.scad` file. I don't think I need to use any libraries.

[Assistant]
mathgrrl_sockbone_customizer.scad:
```
// mathgrrl customizable sock bone

////////////////////////////////////////////////////////////////////////////
// parameters //////////////////////////////////////////////////////////////

// Length from one side of the sock to the other
length = 86;

// Width/thickness of the folded sock
width = 13;

// parameters that the user does not get to specify
$fn = 24*1;
radius = width*(8/13);
thickness = 2*1;
height = 10*1;

////////////////////////////////////////////////////////////////////////////
// renders /////////////////////////////////////////////////////////////////

sockbone();

////////////////////////////////////////////////////////////////////////////
// module for clip /////////////////////////////////////////////////////////

module sockbone(){
	linear_extrude(height)
	// 2D shape of bone holder
	union(){
		difference(){
			// outer bone
			union(){
				translate([radius,0,0])
					circle(radius);
				translate([radius,-width/2,0])
					square([length-2*radius,width]);
				translate([length-radius,0,0])
					circle(radius);
			};
			// take away inner bone
			union(){
				translate([radius,0,0])
					circle(radius-thickness);
				translate([radius,-(width-2*thickness)/2,0])
					square([length-2*radius,width-2*thickness]);
				translate([length-radius,0,0])
					circle(radius-thickness);
			}
			// take away opening
			translate([.25*length,0,0])
				square(.5*length);
		}
		// rounded end caps
		translate([.25*length,width/2-thickness/2,0])
			circle(.7*thickness);
		translate([.75*length,width/2-thickness/2,0])
			circle(.7*thickness);
	}
}
```


[User]
I'd like to design a comb, and I'd like to use OpenSCAD to make it parametric.

The comb will have a central core with a raised section, and then teeth that extend from both sides of the core along the length of the comb.

Here are the parameters I'd like to control:

**Teeth:**

*   `tooth_margin`: The width of the space on either end of the comb that's free of teeth.
*   `tooth_gap`: The spacing between each tooth.
*   `tooth_count`: The number of teeth. I want the tooth width to be calculated automatically to evenly distribute the teeth within the available space, based on the tooth count, gap, and margins.
*   `tooth_length`: The length of the teeth, measured from the core.
*   `front_tooth_height`: The height of the teeth on one side of the comb.
*   `rear_tooth_height`: The height of the teeth on the opposite side of the comb.

**Core:**

*   `comb_x`: The overall width of the lower, main section of the comb core.
*   `comb_y`: The length (narrow dimension) of the lower section of the comb core.
*   `comb_z`: The height of the lower section of the comb core.
*   `raised_x`: The width of the raised section of the comb core. It's centered within the lower section.
*   `raised_y`: The length (narrow dimension) of the raised section of the comb core. It's also centered within the lower section.
*   `raised_z`: The height of the raised section of the comb core.

I'm not looking for any special features at this stage - just a basic comb with these parameters, and I'd like the tooth width to be automatically calculated as specified. I don't want to include any libraries for now.

[Assistant]
comb-draft.scad:
```
/* [Teeth] */

// Width reserved on either end of comb to be free of teeth.
tooth_margin = 8.25;

// Spacing between teeth.
tooth_gap = 1.7;

// Number of teeth. Tooth width is calculated from tooth count, gap, and available space.
tooth_count = 10;

// Length of teeth (measured perpendicular from comb
tooth_length = 12.2;

front_tooth_height = 1.5;

rear_tooth_height = 1.0;

/* [Core] */

// Width of lower section of comb core.
comb_x = 79.3;

// Length (narrow dimension) or lower section of comb core, not counting teeth.
comb_y = 13.7;

// Height of lower section of comb core (from base).
comb_z = 3.0;

// Width of raised section of comb core (centered in lower section).
raised_x = 68.8;

// Length (narrow dimension) of raised section of comb core (centered in lower section).
raised_y = 9.3;

// Height of raised section of comb core (from base).
raised_z = 7.25;

/* [Hidden] */

// Width available for teeth (comb width minus margins).
tooth_span = comb_x - (2 * tooth_margin);

// Individual tooth width (maximum to fill span with count teeth with gap betwen each).
tooth_width = (tooth_span - (tooth_count - 1) * tooth_gap) / tooth_count;

echo(tooth_width);

union() {
	Core();
	Teeth(rear_tooth_height);
	rotate([0, 0, 180]) Teeth(front_tooth_height);
}

module Core() {
	union() {
		translate([0, 0, comb_z/2]) cube([comb_x, comb_y, comb_z], center=true);
		translate([0, 0, raised_z/2]) cube([raised_x, raised_y, raised_z], center=true);
	}
}

module Teeth(height) {
	translate([-tooth_span/2 + tooth_width/2, comb_y/2, 0]) union() {
		for(i = [0:tooth_count-1]) {
			translate([i * (tooth_width + tooth_gap), 0, 0]) Tooth(tooth_width, tooth_length, height);
		}
	}
}

module Tooth(width, length, height) {
	translate([0, length/2, height/2]) cube([width, length, height], center=true);
}

```


[User]
I'm looking to create a parametric OpenSCAD design for a T-slot nut holder. I'd like the design to hold a standard hex nut, but also have a T-slot profile so it can slide into a T-slot. The design should allow me to create an array of these nut holders easily.

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

*   **Nut dimensions:**
    *   `nut_width`: The width of the hex nut, measured from flat side to flat side.
    *   `nut_depth`: The thickness of the nut.
    *   `nut_rotation`: How the nut is oriented, either with a point facing the sides (0 degrees) or a flat side facing the sides (30 degrees).
*   **Washer:**
    *   `washer_thick`: The thickness of an optional washer; set to zero to exclude it.
    *   `washer_rad`: The radius of the washer.
*   **Screw shaft:**
    *   `screw_rad`: The radius of the screw's shaft, in case the nut doesn't penetrate the bottom of the holder, to make room for it.
*   **Holder dimensions:**
    *   `total_nut_length`: The total length of the nut holder.
*   **T-slot profile:**
    *   `slot_width`: The total width of the t-slot, at the top.
    *   `slot_edge_height`: The height of the t-slot at the very edges.
    *   `slot_total_height`: The total height of the t-slot in the middle.
    *   `slot_middle_offset`: The distance from the edges to the flat part at the bottom of the t-slot.
*   **Array:**
    *   `nut_num_x`: The number of nut holders in the x-direction.
    *  `nut_num_y`: The number of nut holders in the y-direction.

I'd like the OpenSCAD file to use modules so it's easy to modify. The main modules would be:

*   `box(w, h, d)`:  A simple box module.
*   `hexagon(height, depth)`: A module to create a hexagon shape.
*   `nut()`:  The main module that puts all the pieces together to create a single t-slot nut holder.

Finally, I'd like the main part of the code to generate a grid/array of `nut()` modules, based on `nut_num_x` and `nut_num_y`. It should position each nut at equal distances from each other. I'm not using any libraries, I'd like this to all be built from scratch.

[Assistant]
nut.scad:
```
//CUSTOMIZER VARIABLES

//Nut width, from flat side to flat side
nut_width = 7.2;

//Nut depth, the thickness of the nut
nut_depth = 2.2;

//How you want the nut oriented
nut_rotation = 0; //[0:Pointy to sides, 30:Flat to sides]

//The thickness of the washer, set to zero to exclude the washer
washer_thick = 0;

//The radius of the washer
washer_rad = 5;

//The radius of the shaft of the screw, in case the nut doesn't penetrate the bottom of the holder
screw_rad = 2.0;

//The length of the holder
total_nut_length = 16;

//The total width of the t-slot, at the top of the slot
slot_width = 11.5;

//The height of the t-slot at the very edges, usually pretty small
slot_edge_height = .8;

//The total height of the t-slot, in the middle
slot_total_height = 3.4;

//How far the flat bit at the bottom of the t-slot is from the edges
slot_middle_offset = 3.0;

//How many nuts to make in the x direction
nut_num_x = 5;

//How many nuts to make in the y direction
nut_num_y = 10;

module box(w,h,d) {
	scale ([w,h,d]) cube(1, true);
}
module hexagon(height, depth) {
	boxWidth=height/1.75;
	rotate([0,0,nut_rotation])
	union(){
		box(boxWidth, height, depth);
		rotate([0,0,60]) box(boxWidth, height, depth);
		rotate([0,0,-60]) box(boxWidth, height, depth);
	}
}

module nut() {
	translate([0,0,slot_total_height])
	difference() {
		translate([-0.5*slot_width, -0.5*total_nut_length, 0])
			rotate([270,0,0])
			linear_extrude(height=total_nut_length)
			polygon([[0,0],
					 [slot_width, 0],
					 [slot_width, slot_edge_height],
					 [slot_width-slot_middle_offset, slot_total_height],
					 [slot_middle_offset, slot_total_height],
					 [0, slot_edge_height]]);
		translate([0,0,-washer_thick+0.01]) cylinder(r=washer_rad, h=washer_thick, $fn=100);
		translate([0,0,-slot_total_height-0.01]) cylinder(r=screw_rad, h=slot_total_height+0.02, $fn=50);
		translate([0,0,-washer_thick-0.5*nut_depth+0.01]) hexagon(nut_width, nut_depth);
	}
}

for(x=[0:nut_num_x-1]) for(y=[0:nut_num_y-1]) {
	translate([-0.5*(nut_num_x-1)*(total_nut_length+2), -0.5*(nut_num_y-1)*(total_nut_length+2), 0])
	translate([x*(total_nut_length+2), y*(total_nut_length+2), 0])
	nut();
}

```


[User]
I'd like to design a parametric Mars habitat module, something like a bunker or a small underground dome. I need it to be highly customizable. The basic shape should be an ellipsoid, with a cylindrical tube entrance, and the whole thing buried under a hill-like structure. I'd like to be able to customize the dimensions of the ellipsoid (width, length, height), the wall thickness, and insulation thickness. Also, the depth of the inner floor from the middle of the room should be a variable.

The entrance should be a cylindrical tube, with customizable diameter and length, leading to a vertical tube with its own diameter and height. The entrance tube should also have a port at the top with a spherical cap. I'd like to have the option of adding ports to the sides for connecting multiple modules together. These ports need to be customizable as well, with gaps for hinges that allow a hatch door to move.

I also need to customize the internal features, like how many inhabitants (up to 2) can be there, their individual height, the number of machines inside, and also to control the distance between internal pillars. I'd like to have vertical pillars under the floor and horizontal pillars around the exit tube, with the ability to control both their distance and radius.

I want to include solar cells on top of the module, and have those be optional, as well as the floor construction. I also need options for structural pillars inside of the structure, as well as a ladder for exiting the structure and a hatch door. The structure will also have the option for inner and outer walls.

For the hatch doors, I need working hinges. The top hatch hinge should be a parametric design, as well as the hatch door hinge. I've seen other hinge libraries, like in MCAD, but I need these to be simple. I want the hinge design itself to be parametric, with adjustable radius and clearance. The hinge should have two parts, an inner and outer cylinder which have a cut out in the middle and a cone on top and bottom.

Finally, I'd like to be able to select different parts of the model to generate, such as just the cutaway version, the entire thing, or just the house section or different cutaway versions.

Could you generate the OpenSCAD files for this, including the parametric hinges and the overall structure? I don't need any attached libraries, but I do need the code to be parametric and flexible.

[Assistant]
MarsCosy_V13.scad:
```
//Which part to generate
part="cutside";// [cutside,cuttop,full,only_house,only_house_cutside,only_house_cutsidetop]

//House size
house_w=50;
//House size
house_l=80;
//House height
house_h=40;
//All walls thickness
house_wall=1;
//Thickness of the vacuum insulation
house_insulation=2;
//Inner house floor depth from the middle of the room
house_floor=25;

//Gap so that hatch doors can be printed and later be freed up (so they can move)
port_gap=.3;

//Entry tube diameter
entry_h=17;

//Port to the next module (front)
frontport=1;//[0,1]
//Port to the next module (back)
backport=1;//[0,1]

//Inhabitants count
man_number=2;//[0,1,2]
//Inhabitants body height
man_height=18;

//hill
hill_thickness=20;

//Rough Number of machines inside the residence
machine_count=36;//[0,16,20,24,36,40,48]

//vertical pillar distance under the floor
inner_pillar_dist=8;

//horizontal pillar distance around the exit tube
outer_pillar_dist=8;

/* [Switches] */

//Do you like solar cells on top?
solar_cell=1;//[0,1]

//Do you want a floor? If not, better dont select inhabitants... :-)
floor_construction=1;//[0,1]

//Do you want pillars? They are needed to reinforce the structure
pillar=1;//[0,1]

//Do you want to be able to climb out?
Ladder=1;//[0,1]
//A door to seal the outer compartment off?
hatchdoor=1;//[0,1]

//Do you want the outer wall?
Outer_Wall=1;//[0,1]
//Do you want the inner wall?
Inner_Wall=1;//[0,1]

//Top hatch hinge
Top_hinge=1;//[0,1]

// preview[view:north west, tilt:top diagonal]

/* [Hidden] */

/*
MarsCosy - A minimal mars residence.
Version 12, June 2014
Written by MC Geisler (mcgenki at gmail dot com)

The model should print without any support. The hinges will work!

Irradiation: The thick layer of material on top protects the inhabitants.
Low outside temperature: The double walls contain superinsulation. It isolates the inner space and the inhabitants together with the equipment generate enough heat to keep the room warm. This saves on energy.
Air: The spherical shape holds pressure easiest (lowest material strain, less material needed)
Dust/Storms: The structure is underground and protected.
Energy: Sun following solar cells generate power.

Many aspects are customizable! Have a try...

The scale is: 10mm = 1m

Have fun!

License: Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
You are free to:
    Share - copy and redistribute the material in any medium or format
    Adapt - remix, transform, and build upon the material
Under the following terms:
    Attribution - You must give appropriate credit, provide a link to the license, and indicate if changes were made.
    You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
    NonCommercial - You may not use the material for commercial purposes.
    ShareAlike - If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
*/

// // for debugging
//part="only_house_cutfront";// [cutside,cuttop,full,only_house,only_house_cutside]
//man_number=0;//[0,1,2]
//machine_count=0;//[0,16,20,24,36,40,48]
//solar_cell=0;//[0,1]
//floor_construction=0;//[0,1]
//pillar=0;//[0,1]
//Outer_Wall=1;//[0,1]
//Inner_Wall=1;//[0,1]

$fs=1;

//inner pillars
inner_pillar_r=house_wall;
//outer pillars
outer_pillar_r=inner_pillar_r*1;

//entry
entry_l=entry_h*2.2;
entrytop_h=house_h;
portbulge=entry_h*.05;
port_r=entry_h/2+portbulge;
//Size of the top hatch hinge
Top_hinge_size=port_r*1.6;

//size
house_size=max(house_w,house_l+entry_l);
//Inner Hatchdoor
hatch_distance=port_gap; //.4
Doorthick=house_wall*2+house_insulation;
Hatchdoor_hinge_size=Top_hinge_size;
//ladder
ladder_r=house_wall*.7;
ladder_step_r=0.5;
ladder_w=5;//entry_h/2;
ladder_stepdist=3;
//inhabitants
man_head=man_height/7.5; //8 heads hight
man_body=man_height-man_head;
man_width=2.33*man_head;
man_depth=1.2*man_head;
man_shoulder_r=man_depth/2;

//Hill
hill_factor=sqrt(2);
hill_size=house_size*hill_factor;
hill_height=house_h*sqrt(2);
walls_adder=4*house_wall+2*house_insulation;
hill_adder=hill_thickness;

//machines
machine_dist=.92;
machine_angle=360/machine_count;
machine_width=2*3.14*house_w/machine_count*.7; //house_l/10
door_angle_small=15;
door_angle_big=30;

//solar cells
solar_cell_m_w=house_l/4;
solar_cell_m_l=house_l/4;
solar_cell_height=solar_cell_m_w/2;
solar_cell_mount_smaller=.25;
solar_cell_mount_r=2;
curvature_r=house_h+walls_adder+hill_adder;

//stand for presentation if no hill is selected
footheight=5;

//----------------------------------------------------------------------------
//hinge stuff
// Choose a stacking clearance factor, in mm (controls distance between cubes)
stacking_clearance = .3;
// Choose a hinge radius, in mm
hinge_radius = 1.5;
// Choose a hinge clearance factor, in mm (controls distance around hinge parts)
hinge_clearance = .45;
// Other variables that people don't get to choose
hinge_fn=24*1;
fudge = .01*1;
corner_radius = 3;//.1*30cube_height;
cone_height = 1.4*hinge_radius;
//cut out above and below the hinge
longercutoff=0;

function outside_height2(Height) = .3*(Height-2*stacking_clearance);
function inside_height2(Height) = (Height-2*stacking_clearance)-2*outside_height2(Height);

module outsideHolder(outside_height2,inside_height2)
{
	// attacher for outside hinge cylinders
	//translate([0,0,stacking_clearance+outside_height2+inside_height2+hinge_clearance])
		rotate(-45,[0,0,1])
			translate([-.8*hinge_radius,0,0])
				cube([1.6*hinge_radius,2*hinge_radius,outside_height2-hinge_clearance-corner_radius/2]);
}

module HingeUD_add(size,doHolder)
{
	outside_height2 = outside_height2(size);
	inside_height2 = inside_height2(size);

	difference()
	{
		union()
		{
			// top cylinder on outside hinge
			translate([0,0,stacking_clearance+outside_height2+inside_height2+hinge_clearance])
			{
				cylinder(	h=outside_height2-hinge_clearance-corner_radius/2,
								r1=hinge_radius,
								r2=hinge_radius,
								$fn=hinge_fn);
				if (doHolder==1)
					outsideHolder(outside_height2,inside_height2);
			}

			// bottom cylinder on outside hinge
			translate([0,0,stacking_clearance+corner_radius/2])
			{
				cylinder(	h=outside_height2-hinge_clearance-corner_radius/2,
								r1=hinge_radius,
								r2=hinge_radius,
								$fn=hinge_fn);
				if (doHolder==1)
					outsideHolder(outside_height2,inside_height2);
			}
		}
		HingeUD_sub(size,0); //cut it completely
	}
}

module HingeUD_sub(size,halfcut)
{
	outside_height2 = outside_height2(size);
	inside_height2 = inside_height2(size);

	difference()
	{
		translate([0,0,stacking_clearance+outside_height2])
		{
			// take away middle cylinder with clearance
			translate([0,0,-hinge_clearance-fudge])
				cylinder(	h=inside_height2+2*hinge_clearance+2*fudge,
								r1=hinge_radius+fudge+hinge_clearance,
								r2=hinge_radius+fudge+hinge_clearance,
								$fn=hinge_fn);

			// take away top cone with clearance
			translate([0,0,inside_height2+hinge_clearance-fudge])
				cylinder(h=cone_height, r1=hinge_radius, r2=0, $fn=hinge_fn);

			// take away bottom cone with clearance
			translate([0,0,-cone_height-hinge_clearance+fudge])
				cylinder(h=cone_height, r1=0, r2=hinge_radius, $fn=hinge_fn);
		}

		//only cut into one side!
		if(halfcut>0)
		{
			translate([size/2,-size/2,size/2])
				cube([size,size,size],center=true);
		}
	}
}

module HingeM_add(size)
{
	outside_height2 = outside_height2(size);
	inside_height2 = inside_height2(size);

	translate([0,0,stacking_clearance+outside_height2])
	{
		// inside hinge cylinder
		cylinder(	h=inside_height2,
						r1=hinge_radius,
						r2=hinge_radius,
						$fn=hinge_fn);

		// attacher for inside hinge cylinder
		rotate(45+180,[0,0,1])
			translate([-.8*hinge_radius,0,0])
				cube([1.6*hinge_radius,2*hinge_radius,inside_height2]);

		// inside hinge top cone
		translate([0,0,inside_height2])
			cylinder(	h=cone_height,
							r1=hinge_radius,
							r2=0,
							$fn=hinge_fn);

		// inside hinge bottom cone
		translate([0,0,-cone_height])
			cylinder(	h=cone_height,
							r1=0,
							r2=hinge_radius,
							$fn=hinge_fn);
	}
}
module HingeM_sub(size,longercutoff)
{
	outside_height2 = outside_height2(size);
	inside_height2 = inside_height2(size);

	rotate([0,0,180])
		difference()
		{

			translate([0,0,stacking_clearance])
			{
				// take away inside top cylinder with clearance
				translate([0,0,outside_height2+inside_height2])
					cylinder(	h=outside_height2+fudge+longercutoff,
									r1=hinge_radius+fudge+hinge_clearance,
									r2=hinge_radius+fudge+hinge_clearance,
									$fn=hinge_fn);

				// take away inside bottom cylinder with clearance
				translate([0,0,-fudge-longercutoff])
					cylinder(	h=outside_height2+fudge+longercutoff,
									r1=hinge_radius+fudge+hinge_clearance,
									r2=hinge_radius+fudge+hinge_clearance,
									$fn=hinge_fn);
			}

			//only cut into one side!
			translate([0,-size/2,size/2])
				cube([size,size,size],center=true);
			translate([size/2,size/2,size/2])
				cube([size,size,size],center=true);
		}
}

module Hinge_add(size,DoHolder)
{
	HingeM_add(size);
	HingeUD_add(size,DoHolder);
}
module Hinge_sub(size,longercutoff)
{
	HingeM_sub(size,longercutoff);
	HingeUD_sub(size,1);//cut only half side (only the wall, not the door)
}

module hinge_test(Width,Thick)
{
	difference()
	{
		union()
		{
			//main
			translate([Width/2,Width/2,Width/2])
				cube([Width,Width-corner_radius/4-stacking_clearance/2,Width], center=true);
			//door
			translate([Width/2,-Thick/2,Width/2])
			cube([Width,Thick-corner_radius/4-stacking_clearance/2,Width], center=true);
		}
		Hinge_sub(Width);
	}
	Hinge_add(Width,0);
}

DoorWidth=20;
DoorThick=6;
//hinge_test(DoorWidth,DoorThick);
//----------------------------------------------------------------------------

module ellipsoid(dw,dl,dh)
{
	w=dw/2;
	l=dl/2;
	h=dh/2;
	scale([1,l/w,h/w])
		sphere(r=w);
}

module inner_space(adder)
{
	ellipsoid(house_w+adder*2,house_l+adder*2,house_h+adder*2);
}

module inner_space_and_entry(adder,DoPortGap)
{
	inner_space(adder);

	//entry tube horizontal
	translate([0,-house_l/2,0])
		rotate([90,0,0])
			cylinder(r=entry_h/2+adder,h=entry_l,center=true);

	translate([0,-house_l/2-entry_l/2,entrytop_h-entry_h/2])
		difference()
		{
			union()
			{
				//entry tube vertical
				translate([0,0,-entrytop_h/2-adder/2])
					cylinder(r=entry_h/2+adder,h=entrytop_h+adder,center=true);

				//entry lid
				scale([1,1,1])
					sphere(r=port_r+adder,center=true);
			}

			if(DoPortGap==1)
			{
				cube([4*port_r,4*port_r,port_gap],center=true);
			}
			else
			{
				//cut out a ring from the inner cut out
				difference()
				{
					cylinder(r=port_r+adder,h=port_gap+4*house_wall,center=true);
					cylinder(r=(port_r+adder)-adder,h=port_gap+4*house_wall+1,center=true);
				}
			}
		}

	if (backport==1)
	{
		//Connecting tube back
		translate([-house_w/2,0,0])
			rotate([0,90,0])
				cylinder(r=entry_h/2+adder,h=entry_l,center=true);
	}

	if (frontport==1)
	{
		//Connecting tube front
		translate([house_w/2,0,0])
			rotate([0,90,0])
				cylinder(r=entry_h/2+adder,h=entry_l,center=true);
	}
}

module single_house_wall(adder2,thick)
{
	difference()
	{
		inner_space_and_entry(adder2+thick,1);
		inner_space_and_entry(adder2,0);
	}
}

module OnlyInBetweenWalls_object(relevantpart)
{
	//in between walls
	difference()
	{
		single_house_wall(house_wall,house_insulation);

		if (relevantpart=="room")
		{
			translate([0,-house_size/2-house_l/2*1.1,0])
				cube([house_size,house_size,house_size],center=true);
		}
	}
}

module pillars(width,length,height,dist,radius)
{
	//vertical pillars
	for (x=[floor(-width/2/dist):floor(width/2/dist)])
		for (y=[floor((-length/2-width/4)/dist):floor((length/2+width/4)/dist)])
			translate([x*dist,(y+x/2)*dist,-height/2])
				cylinder(r=radius,h=height,center=true);
}

module OnlyInsideRoom_object()
{
	//inner space
	inner_space_and_entry(house_wall/2,0);
}

module floor_construction()
{
	//floor
	intersection()
	{
		union()
		{
			translate([0,0,-house_floor/2])
				cube([house_size,house_size,house_wall],center=true);

			//pillars for the floor
			if(pillar==1)
				translate([0,0,-house_floor/2])
					pillars(house_w,house_l,house_h,inner_pillar_dist,inner_pillar_r);
		}

		OnlyInsideRoom_object();
	}
}

module pillars_square(width,length,height,dist,radius)
{
	//vertical pillars
	for (x=[floor(-width/2/dist):floor(width/2/dist)])
		for (y=[floor((-length/2)/dist):floor((length/2)/dist)])
			translate([x*dist,y*dist,-height/2])
				cylinder(r=radius,h=height,center=true);
}

module solar_cell_joint(height)
{
		translate([0,0,height*.25])
			sphere(r=solar_cell_mount_r);
}
module solar_cell_module(height)
{
	//module
	hull()
	{
		translate([0,0,height])
			rotate([30,0,0])
				cube([solar_cell_m_l,solar_cell_m_w,house_wall],center=true);

		//joint
		solar_cell_joint(height);
	}

	//foot
	hull()
	{
		solar_cell_joint(height);
		translate([0,0,-height])
			cube([solar_cell_mount_r*1.8,solar_cell_mount_r*1.8,house_wall],center=true);
	}
}

module solar_cell()
{
	for (y=[-1:1])
		for (x=[-1:1])
			 assign (dx=(solar_cell_m_l+3)*x, dy=(solar_cell_m_w+3)*y)
				translate([dx,dy,house_h/2+hill_adder])
					translate([0,0,solar_cell_height-(curvature_r-sqrt(curvature_r*curvature_r-dx*dx-dy*dy))])
					solar_cell_module(solar_cell_height);

}

module in_between_pillars()
{
	intersection()
	{
		//spherical pillars
		//scale([1,house_l/house_w,house_h/house_w])
		for (theta=[0:180/9:180-1])
			for (phi=[0:180/8:180-1])
				rotate([theta,0,phi])
					cylinder(r=outer_pillar_r,h=house_size,center=true);

		OnlyInBetweenWalls_object("room");
	}

	intersection()
	{
		union()
		{
			//pillars entry tube horizontal
			for (theta=[0:180/6:180-1])
				translate([0,-entry_l/2/4-house_l/2,0])
					rotate([0,theta,0])
						cylinder(r=outer_pillar_r,h=house_size,center=true);

			//pillars entry tube vertical
			for (theta=[0:180/6:180-1])
				for (z=[-entrytop_h/2-.3:outer_pillar_dist:entrytop_h/2*1.5])
					if(abs(z-entrytop_h/2)>outer_pillar_dist/2)
						translate([0,-house_l/2-entry_l/2,entrytop_h/2-entry_h/2+z])
							rotate([90,0,theta])
								cylinder(r=outer_pillar_r,h=house_insulation*2+entry_h+house_wall*6,center=true);

			//pillars entry tube bottom of vertical
			translate([0,-house_l/2-entry_l/2,-entry_h/2-house_insulation])
				intersection()
				{
					translate([0,0,house_insulation])
						pillars(entry_h/2,entry_h/2,house_insulation*2,entry_h/3,outer_pillar_r);
					cylinder(r=entry_h/2,h=house_insulation*2,center=true);
				}
		}
		OnlyInBetweenWalls_object();
	}
}

module hatchdoor()
{
	translate([0,-house_l/2+2*house_wall,0])
		{
			rotate([90,0,0])
				difference()
				{
					union()
					{
						//door
						cylinder(r=entry_h/2-hatch_distance,h=Doorthick,center=true);

						//handle
						rotate([0,90,0])
						difference()
							{
								cylinder(r=Doorthick/2+house_wall*2,h=house_wall*2,center=true);
								cylinder(r=Doorthick/2+house_wall*2-house_wall,h=house_wall*2+1,center=true);
							}
					}
					//insulation
					intersection()
					{
						cylinder(r=entry_h/2-hatch_distance-house_wall,h=house_insulation,center=true);
						//make the insulation a bit shorter to strengthen the door hinge
						cube([entry_h*.6,entry_h,entry_h],center=true);
					}
				}
		}

}

module ladder()
{
	module ladder_leg(shift)
	{
		translate([0,shift,0])
			cylinder(r=ladder_r,h=entrytop_h,center=true);
	}

	intersection()
	{
		translate([-entry_h/3,-house_l/2-entry_l/2, entrytop_h/2-entry_h/2 ])
			rotate([0,0,0])
			{

				//entry tube vertical
				//translate([0,-house_l/2-entry_l/2,entrytop_h/2-entry_h/2-adder/2])
				//	cylinder(r=entry_h/2+adder,h=entrytop_h+adder,center=true);

				//legs
				ladder_leg(-ladder_w/2);
				ladder_leg(ladder_w/2);

				//steps
				for (z=[0:ladder_stepdist:entrytop_h])
					translate([0,0,z-entrytop_h/2])
						rotate([90,0,0])
							cylinder(r=ladder_step_r,h=ladder_w,center=true);

				//holder
				for (z=[0:ladder_stepdist*3:entrytop_h])
					for (y=[-ladder_w/2,ladder_w/2])
						translate([-ladder_w,y,z-entrytop_h/2])
							rotate([0,90,0])
								cylinder(r=ladder_step_r,h=ladder_w*2,center=true);
			}

		OnlyInsideRoom_object();
	}
}

module man()
{
	//body
	hull()
	{
		translate([0,0,man_body-man_shoulder_r])
			rotate([90,0,0])
				cylinder(r=man_shoulder_r,h=man_width,center=true,$fn=16);

		cylinder(r=man_head*.7,h=man_head,$fn=16);
	}

	//head and neck
	translate([0,0,man_height-man_head/2])
	{
		sphere(r=man_head/2,$fn=16);
		translate([0,0,-man_head/2])
			cylinder(r=man_head/4,h=man_head,$fn=16,center=true);
	}
}

module inhabitants()
{
	if(man_number>0)
		translate([-man_width,-man_width,-house_floor/2])
			rotate([0,0,30])
				man();

	if(man_number>1)
		translate([-man_width,man_width,-house_floor/2])
			rotate([0,0,-30])
				man();
}

module machine(width,height)
{
	translate([0,0,-house_floor/2+height/2])
	{
		difference()
		{
			union()
			{
				cube([house_w/8,width,height],center=true);
				for (i=[1:5])
					translate([0,width/5*rands(-2,2,1)[0],height/10*rands(-4,4,1)[0]])
						cube([house_w/8+1.2,width/5*rands(.5,1,1)[0],height/10*rands(.5,1,1)[0]],center=true);
			}
				for (i=[1:rands(0,3,1)[0]])
				{
					translate([-house_w/8/2-2+.6,0,height*rands(-.5,.5,1)[0]])
						cube([4,width,.6],center=true);
					translate([-(-house_w/8/2-2+.6) ,0,height*rands(-.5,.5,1)[0]])
						cube([4,width,.6],center=true);
				}
		}
	}
}

module machines()
{
	intersection()
	{
		for (i=[0:machine_angle:360])
			translate([house_w/2*cos(i)*machine_dist,house_l/2*sin(i)*machine_dist,0])
				rotate([0,0,atan(tan(i)*house_w/house_l)])
					if( abs(i-270)>door_angle_big
							&& abs(360-i)>door_angle_small && abs(i)>door_angle_small
							&& abs(180-i)>door_angle_small )
						machine(machine_width,(man_height*rands(.9,1.2,1)[0]));

		OnlyInsideRoom_object();
	}
}

//All functions for the top hatch hinge
function translate_Top_Hinge() = [ -(port_r+1.5*house_wall+house_insulation) ,
						-house_l/2-entry_l/2-Top_hinge_size/2 ,
						entrytop_h-entry_h/2 ];
module Top_Hinge_add()
{
	translate(translate_Top_Hinge())
		rotate([-90,0,0])
			Hinge_add(Top_hinge_size,1);
}
module Top_Hinge_sub()
{
	translate(translate_Top_Hinge())
		rotate([-90,0,0])
			Hinge_sub(Top_hinge_size,0);
}

Hatchdoor_hinge_size=entry_h*.85;
//All functions for the inner hatch door hinge
function translate_Hatchdoor_Hinge() = [-(entry_h/2-hatch_distance)+.3,
						-house_l/2+2*house_wall+house_wall*2 +.1,
						-Hatchdoor_hinge_size/2];
module Hatchdoor_Hinge_add()
{
		translate(translate_Hatchdoor_Hinge())
			Hinge_add(Hatchdoor_hinge_size,0);
}
module Hatchdoor_Hinge_sub(LessCutoff)
{
		translate(translate_Hatchdoor_Hinge())
			Hinge_sub(Hatchdoor_hinge_size,LessCutoff);
}

module house()
{
	difference()
	{
		union()
		{
			//outer wall
			if(Outer_Wall==1)
				single_house_wall(house_wall+house_insulation,house_wall);

			//inner wall
			if(Inner_Wall==1)
				single_house_wall(0,house_wall);

			//hatch
			if(hatchdoor==1)
			difference()
			{
				hatchdoor();
				Hatchdoor_Hinge_sub(0);
			}
		}
		//top hatch
		if(Top_hinge==1)
			Top_Hinge_sub();

		//hatchdoor
		if(hatchdoor==1)
			Hatchdoor_Hinge_sub(-4);
	}

	//top hatch
	if(Top_hinge==1)
		Top_Hinge_add();

	//hatchdoor
	if(hatchdoor==1)
		Hatchdoor_Hinge_add();

	//floor
	if(floor_construction==1)
	floor_construction();

	//pillars in between walls
	if(pillar==1)
		in_between_pillars();

	//ladder
	if(Ladder==1)
		ladder();

	//inhabitants
	inhabitants();

	//machines
	if(machine_count>0)
		machines();
}

module fullhill()
{
		hull()
		{
			//house bump
			inner_space(hill_thickness+house_insulation);

			//terrain
			translate([0,0,-hill_height/2])
				cube([hill_size,hill_size,hill_height],center=true);
		}
}

module hill_surface()
{
	difference()
	{
		fullhill();

		translate([0,0,-house_wall])
			fullhill();

		inner_space_and_entry(0,0);
	}
}

module hill()
{
	difference()
	{
		fullhill();
		inner_space_and_entry(house_wall+house_insulation,0);
	}
}

module cut_to_size_object()
{
		//cut away for better printing
		translate([0,0,hill_adder/2-7.5+50/2])
				cube([house_w+walls_adder,house_l+entry_l*2+walls_adder,house_h+walls_adder+hill_adder+50],center=true);
}

module hill_and_house()
{
	intersection()
	{
		union()
		{
			house();
			hill();
			if (solar_cell==1)
				solar_cell();
		}
		cut_to_size_object();
	}
}

//----------------------------
// choices

if (part=="cutside")
{
	rotate([0,0,180])
	difference()
	{
		hill_and_house();
		translate([house_size,0,0])
			cube(house_size*2,center=true);
	}
}

if (part=="full")
{
	hill_and_house();
}

if (part=="cuttop")
{
	difference()
	{
		hill_and_house();
		translate([0,0,house_size])
			cube(house_size*2,center=true);
	}

	//inhabitants
	inhabitants();

	//machines
	if(machine_count>0)
		machines();
}

if (part=="only_house" || part=="only_house_cutside" || part=="only_house_cutsidetop" || part=="only_house_cutfront")
{
	rotate([0,0,180])
		difference()
		{
			intersection()
			{
				union()
				{
					house();

					//stand for printing and to put it on your desk
					difference()
					{
						translate([0,0,-(house_h+walls_adder-footheight)/2])
							cylinder(r=house_w/2/2,h=footheight,center=true);
						inner_space_and_entry(house_wall+house_insulation+house_wall-house_wall/2,0);
					}
				}
				cut_to_size_object();
			}

			if (part=="only_house_cutside"||part=="only_house_cutsidetop")
			{
				translate([house_size,0,0])
					cube(house_size*2,center=true);
			}

			if (part=="only_house_cutfront")
			{
				translate([0,-house_size-house_size/2,0])
					cube(house_size*2,center=true);
			}

			if (part=="only_house_cutsidetop")
			{
				translate([0,0,house_size+31.5])
					cube(house_size*2,center=true);
			}
		}
}
```


[User]
I'd like to create a customizable hair clip, similar to the one described in the attached file. It's a 2D shape created by a series of connected spheres that form a path. I want to be able to control the clip's thickness, the size of the loop, the length of the hair capture area, its height, and the length of the end piece.

Could you generate an OpenSCAD file that allows me to adjust these parameters:

*   `path_radius`: Thickness of the clip path.
*   `loop_radius`: Radius of the circular hook loop.
*   `capture_length`: Length of the opening for capturing hair.
*   `capture_height`: Height of the hair capture opening.
*   `end_length`: Length of the clip's tail end, past the loop.

The shape should be created by placing spheres at the defined points, with the specified radius. Each subsequent pair of spheres forms a hull to create the path. The points themselves are calculated based on the parameters. I'd like to keep it relatively simple, without relying on any external libraries like MCAD, BOSL, or similar. Just plain vanilla OpenSCAD.

[Assistant]
mathgrrl_powerclip_customizer.scad:
```
// mathgrrl customizable power hair clip

////////////////////////////////////////////////////////////////////////////
// parameters //////////////////////////////////////////////////////////////

// Thickness of the path, in millimeters - make larger for sturdier clip, smaller for daintier clip
path_radius = 1.8;

// Radius of the hook loop, in millimeters
loop_radius = 6;

// Length of the opening that captures the hair, in millimeters
capture_length = 25;

// Height of the opening that captures the hair, in millimeters - larger for looser clip, smaller for tighter clip
capture_height = 8;

// Length of the part that extends past the hook loop, in millimeters
end_length = 15;

////////////////////////////////////////////////////////////////////////////
// points //////////////////////////////////////////////////////////////////

points = [
	// points around a circle of given radius at 45 degree intervals
	[loop_radius*sqrt(2)/2,loop_radius*sqrt(2)/2,0],
	[loop_radius*0,loop_radius*1,0],
	[loop_radius*-sqrt(2)/2,loop_radius*sqrt(2)/2,0],
	[loop_radius*-1,loop_radius*0,0],
	[loop_radius*-sqrt(2)/2,loop_radius*-sqrt(2)/2,0],
	[loop_radius*0,loop_radius*-1,0],
	// move out from the loop
	[loop_radius*4,loop_radius*-sqrt(2)/2,0],
	// move up to top of capture
	[loop_radius*6,0,0],
	// move around the capture
	[loop_radius*6+capture_length,0,0],
	//[loop_radius*6.5+capture_length,0,0],
	[loop_radius*6.5+capture_length,loop_radius*-sqrt(2)/2,0],
	[loop_radius*6+capture_length,-capture_height,0],
	// move back under the loop
	[0,loop_radius*-1-2*path_radius,0],
	// move to the endpoint
	[-loop_radius-end_length,loop_radius*-1-2*path_radius,0]
];

////////////////////////////////////////////////////////////////////////////
// render //////////////////////////////////////////////////////////////////

for(i = [0:len(points)-2]){
	hull(){
		translate(points[i]) sphere(path_radius);
		translate(points[i+1]) sphere(path_radius);
	}
}

```


[User]
Hey, I'm looking to create some 3D models of Minecraft tools, like a pickaxe, axe, shovel, etc. I've got a basic concept of how they are built out of cubes and I'd like to be able to generate these programmatically with OpenSCAD.

I need a parametric design that can output the following tools:

*   Axe
*   Pickaxe
*   Spade (Shovel)
*   Hoe
*   Sword
*   Egg

Each tool should be constructed from a series of 1x1x1 cubes, arranged to match the pixel art style of Minecraft. I would like to have a parameter to control the overall scale of the model, and another to select which tool to generate. The scale parameter should represent tenths of millimeters per cube, so setting it to 20 means each cube is 2mm on a side. The tool selection parameter should use integers (1 for Spade, 2 for Pickaxe, etc.)

I don't have any existing OpenSCAD code that could help, so it needs to be done from scratch. I'd like it to all be in one file. I'm not requesting any additional libraries. Can you help me with this?

[Assistant]
MCTools.scad:
```
//Minecraft Tools
//Developed by Rich Pereira
//rich@pereira.com
//--------------------------
//More to come!
//--------------------------

//CUSTOMIZER VARIABLES

//	Select tool
tool = 2;	//	[1:Spade, 2:Pickaxe, 3:Axe, 4:Hoe, 5:Sword, 6:Egg]

//	Scale (tenths of mm per cube)
cube_size = 20;	//	[1:50]

//CUSTOMIZER VARIABLES END

scale([cube_size/10,cube_size/10,cube_size/10])
if (tool==1) spade();
if (tool==2) pick();
if (tool==3) axe();
if (tool==4) hoe();
if (tool==5) sword();
if (tool==6) egg();

module spade() {
translate([9,12,0]) cube([3,1,1]);
translate([8,11,0]) cube([5,1,1]);
translate([7,10,0]) cube([6,1,1]);
translate([6,9,0]) cube([7,1,1]);
translate([7,8,0]) cube([5,1,1]);
translate([6,7,0]) cube([5,1,1]);
translate([5,6,0]) cube([3,1,1]);
translate([4,5,0]) cube([3,1,1]);
translate([3,4,0]) cube([3,1,1]);
translate([2,3,0]) cube([3,1,1]);
translate([0,2,0]) cube([4,1,1]);
translate([0,1,0]) cube([3,1,1]);
translate([1,0,0]) cube([2,1,1]);
translate([9,6,0]) cube([1,1,1]);
};

module pick() {
translate([4,12,0]) cube([5,1,1]);
translate([3,11,0]) cube([9,1,1]);
translate([4,10,0]) cube([8,1,1]);
translate([8,9,0]) cube([4,1,1]);
translate([7,8,0]) cube([6,1,1]);
translate([6,7,0]) cube([3,1,1]);
translate([5,6,0]) cube([3,1,1]);
translate([4,5,0]) cube([3,1,1]);
translate([3,4,0]) cube([3,1,1]);
translate([2,3,0]) cube([3,1,1]);
translate([1,2,0]) cube([3,1,1]);
translate([0,1,0]) cube([3,1,1]);
translate([0,0,0]) cube([2,1,1]);
translate([10,7,0]) cube([3,1,1]);
translate([10,6,0]) cube([3,1,1]);
translate([10,5,0]) cube([3,1,1]);
translate([10,4,0]) cube([3,1,1]);
translate([11,3,0]) cube([1,1,1]);
};

module axe() {
translate([8,14,0]) cube([2,1,1]);
translate([7,13,0]) cube([4,1,1]);
translate([6,12,0]) cube([5,1,1]);
translate([5,11,0]) cube([7,1,1]);
translate([5,10,0]) cube([7,1,1]);
translate([6,9,0]) cube([7,1,1]);
translate([7,8,0]) cube([6,1,1]);
translate([6,7,0]) cube([3,1,1]);
translate([5,6,0]) cube([3,1,1]);
translate([4,5,0]) cube([3,1,1]);
translate([3,4,0]) cube([3,1,1]);
translate([2,3,0]) cube([3,1,1]);
translate([1,2,0]) cube([3,1,1]);
translate([0,1,0]) cube([3,1,1]);
translate([0,0,0]) cube([2,1,1]);
translate([10,7,0]) cube([2,1,1]);
};

module hoe() {
translate([5,13,0]) cube([3,1,1]);
translate([4,12,0]) cube([5,1,1]);
translate([5,11,0]) cube([7,1,1]);
translate([7,10,0]) cube([5,1,1]);
translate([8,9,0]) cube([4,1,1]);
translate([7,8,0]) cube([4,1,1]);
translate([6,7,0]) cube([3,1,1]);
translate([5,6,0]) cube([3,1,1]);
translate([4,5,0]) cube([3,1,1]);
translate([3,4,0]) cube([3,1,1]);
translate([2,3,0]) cube([3,1,1]);
translate([1,2,0]) cube([3,1,1]);
translate([0,1,0]) cube([3,1,1]);
translate([0,0,0]) cube([2,1,1]);
};

module egg() {
translate([4,12,0]) cube([4,1,1]);
translate([3,11,0]) cube([6,1,1]);
translate([2,10,0]) cube([8,1,1]);
translate([1,9,0]) cube([9,1,1]);
translate([1,8,0]) cube([10,1,1]);
translate([0,7,0]) cube([11,1,1]);
translate([0,6,0]) cube([12,1,1]);
translate([0,5,0]) cube([12,1,1]);
translate([0,4,0]) cube([12,1,1]);
translate([1,3,0]) cube([10,1,1]);
translate([1,2,0]) cube([10,1,1]);
translate([2,1,0]) cube([8,1,1]);
translate([3,0,0]) cube([6,1,1]);
};

module sword() {
translate([13,15,0]) cube ([3,1,1]);
translate([12,14,0]) cube ([4,1,1]);
translate([11,13,0]) cube ([5,1,1]);
translate([10,12,0]) cube ([5,1,1]);
translate([9,11,0]) cube ([5,1,1]);
translate([8,10,0]) cube ([5,1,1]);
translate([2,9,0]) cube ([2,1,1]);
translate([2,8,0]) cube ([3,1,1]);
translate([3,7,0]) cube ([7,1,1]);
translate([3,6,0]) cube ([6,1,1]);
translate([4,5,0]) cube ([4,1,1]);
translate([3,4,0]) cube ([6,1,1]);
translate([2,3,0]) cube ([3,1,1]);
translate([0,2,0]) cube ([4,1,1]);
translate([0,1,0]) cube ([3,1,1]);
translate([0,0,0]) cube ([3,1,1]);
translate([7,9,0]) cube ([5,1,1]);
translate([6,8,0]) cube ([5,1,1]);
translate([6,3,0]) cube ([4,1,1]);
translate([8,2,0]) cube ([2,1,1]);
};

```


[User]
I'm looking to create a parametric holder for solar cell samples, designed to be used in a solar simulator for light soaking. The current design uses a circular ring with three grabber arms to hold the samples, and I need something a little more flexible.

My basic idea is to have a main circular ring, but instead of fixed arms, I want to have mounting points where different styles of sample holders can be attached. These mounts should be able to accommodate various sizes and styles of sample holders.

Specifically, the core ring needs to have the following features:

*   **Parametric Diameter:** I want to be able to easily adjust the inner diameter of the main ring.
*   **Attachment Points:** I'd like to have a configurable number of evenly spaced attachment points around the circumference of the ring. Each of these attachment points should be a standard type, maybe a hole for screw or a small dovetail so different mounts can be easily swapped on and off.
*   **Parametric Thickness:** Both the ring's thickness and height need to be adjustable.
*   **Material Thickness:**  I need to be able to define the thickness of the material used to print the ring. This will help make sure the attachment points are sturdy enough, and also will help with printability.

I also want to have at least two different sample holder styles, designed as separate modules:

1.  **Clip Holder:** This should be a mount that has a small platform with a hole for a binder clip, for holding regular flat rectangular samples. The binder clip hole should also be a parameter.
2.  **Adjustable Screw Clamp:** This mount would have a small platform with threaded holes, allowing a small screw to press down on the sample to keep it in place. Ideally, I want the size of the platform, the distance between the holes, and the thread size to be parameters.

I'd need a way to assemble the sample holders onto the main ring using the attachment points defined in the ring file. I'm expecting this to involve translations and rotations of the separate sample holder modules.

Please design the necessary .scad files, with thorough commenting to explain the purpose of all of the parameters. I think you'll need to use a library to do this, and I know that BOSL2 has a module for dovetails, which I think might be very useful. Please use BOSL2 as much as possible.

[Assistant]
Noahs_ring.scad:
```
//height
a=5;
//internal radius of holder
b=37/2;
//radius of grabbers
c=7;
//thickness
t=4;

difference(){
hull(){
cylinder(h=a, r=b+t, center=true, $fn=100);
translate([b+t,0,0])cylinder(h=a, r=c, center=true, $fn=100);
rotate([0,0,120])translate([b+t,0,0])cylinder(h=a, r=c, center=true, $fn=100);
rotate([0,0,240])translate([b+t,0,0])cylinder(h=a, r=c, center=true, $fn=100);
}
cylinder(h=a+1, r=b, center=true, $fn=100);
}
```


[User]
Hey, I'm looking to get a parametric spool holder designed for a Printrbot Metal Simple 3D printer. It needs to press-fit onto the top of the Z-axis rods, which are 6.2mm in radius. I've got a design I've been using, but it's not very adaptable for other printer models and spool sizes, and I'd like a more flexible version.

The basic idea is that it has two vertical supports that clamp onto the Z-rods, and a horizontal arm between those supports that holds the spool. There should be some kind of angled arm coming off one of the supports to guide the filament. The model I've been using is defined by these parameters:

*   **`Rspool`**: Radius of the spool holder cylinder (where the spool sits) – currently 15mm
*   **`H`**: Height of the spool holder cylinder – currently 100mm
*   **`R`**: Radius of the Z-rods – currently 6.2mm
*   **`w1`**: Single trace width of plastic - currently 0.4mm - *not* a critical dimension; might be useful for calculating wall thickness.
*   **`D`**: Distance between Z-rods (inner measurement) – currently 58mm
*   **`L`**: Length of the guide arm – currently 130mm

The current design uses a cylinder with a larger diameter at the top for the spool holder, so maybe that's something to keep in mind. Also it uses some interesting subtractions to create the press-fit; I think the cylinder has a slightly larger diameter than the rod for the main cylinder and then a smaller diameter hole for press fitting.

I'm envisioning a design where all these are parameters I can adjust easily. I'd also like a way to control the number of 'arms' (my current design only has one). I also think it might be nice if it weren't just a flat horizontal arm; perhaps it could be curved and the design would allow me to control that curve. I'm thinking it would also be useful to control the angle of the guide arm relative to the support arm. Finally, can we also control the length of the guide arm and whether there is a hole for filament to pass through?

I'd like the design to be done in OpenSCAD if possible. I'm not using any external libraries currently. Could you generate an OpenSCAD file (or files) for this?

[Assistant]
PrintrbotSpoolHolder.scad:
```
// printrbot spool holder

// Radius of spool holder
Rspool=15;
// Height of spool holder
H=100;
// Radius of Z-rods (adjust fit here)
R=6.2;
// Path width of single trace of plastic
w1=.4;
// Distance between Z-rods (inside measurement)
D=58;
// Length of guide arm
L=130;

w=w1*4;
d=D/2+R;

difference(){
	union(){
		translate([0,0,17]){
			cylinder(r=Rspool,h=H);
			cylinder(r1=30,r2=0,h=40);
		}
		cylinder(r1=15,r2=30,h=17.01);
		translate([0,0,17/2])cube([2*d,2*(R+w),17],center=true);
		translate([d,0,0])cylinder(r=R+w,h=17);
		translate([-d,0,0])cylinder(r=R+w,h=17);
		translate([d,0,0])rotate([0,0,-45]){
			translate([0,-5,0])cube([L-d,10,10]);
			translate([L-d,0,0])rotate([0,0,90])guide();
		}
	}
	translate([d,0,0])cylinder(r=R,h=30,center=true);
	translate([d,0,0])cylinder(r1=2*R+0.8,r2=0.8,h=30,center=true);
	translate([-d,0,0])cylinder(r=R,h=30,center=true);
	translate([-d,0,0])cylinder(r1=2*R+0.8,r2=0.8,h=30,center=true);
}

module guide()
difference(){
	translate([-5,-5,0])cube([10,10,50]);
	translate([0,0,40])rotate([0,90,0])cylinder(r=3,h=20,center=true,$fn=12);
	translate([0,0,40])rotate([0,135,0])cylinder(r=3,h=20,$fn=12);
	//mirror([0,1,0]){
		translate([0,0,40])rotate([-30,0,0])translate([-1,-3,0])cube(20);
		translate([0,0,40])rotate([-30,0,180])translate([-1,-3,0])cube(20);
		translate([0,0,40])rotate([0,45,0])cube(20);
	//}
	translate([0,0,50])cube([2,20,20],center=true);

}
```


[User]
Hey, I'm looking to get a parametric tray designed in OpenSCAD. I have an idea for a simple design with some parameters to control its size and shape, and I'm not very familiar with OpenSCAD syntax myself.

Basically, I want a tray that starts out with a certain width and height at the base and then flares out to a different width and height at the top, creating a sort of trapezoidal profile when viewed from the side. It should have a flat bottom and be hollow inside to make the actual tray. Here are the key things I want to be able to customize:

*   **Tray Width:** The width of the tray at the base (in mm).
*   **Tray Height:** The height of the tray at the base (in mm).
*   **Wall Thickness:** The thickness of the tray's walls (in mm).
*   **Floor Thickness:** The thickness of the bottom of the tray (in mm).
*   **Tray Depth:** The overall depth of the tray (in mm), or how far it extends into the z-axis.
*   **Offset Height:** How much taller the tray is at the top than it is at the base (in mm).
*   **Offset Width:** How much wider the tray is at the top than it is at the base (in mm).

I'm thinking we'll need to use the `polyhedron` function to make this work. I also want to be able to define these parameters easily at the start of the file. I'd like the output to be a single tray, not multiple overlapping shapes or something.

Could you generate the OpenSCAD code for me? Thanks!

[Assistant]
parametricTray.scad:
```
// preview[view:south, tilt:top]

// in mm
tray_width = 76;
// in mm
tray_height = 60;
// in mm
wall_thickness = 1.5;
// in mm
floor_thickness = 3;
// in mm
tray_depth = 40;

//How much higher is the height at the top? in mm.
offset_height = 20;
//How much wider is the width at the top? in mm
offset_width = 50;

/* [Hidden] */
// ignore variable values
//layer1
topLeft = [0, 0, 0];//[hidden]
topMiddle = [0, tray_width / 2, 0];//[hidden]
topRight = [0, tray_width, 0];//[hidden]
middleRight = [tray_height / 2,tray_width, 0];//[hidden]
bottomRight = [tray_height, tray_width,0];//[hidden]
bottomMiddle = [tray_height, tray_width / 2, 0];//[hidden]
bottomLeft = [tray_height, 0, 0];//[hidden]
middleLeft = [tray_height / 2, 0, 0];//[hidden]

//layer2
l2TopLeft = [0 - offset_height / 2, 0 - offset_width / 2, tray_depth];//[hidden]
l2TopRight = [0 - offset_height / 2, tray_width + offset_width / 2, tray_depth];//[hidden]
l2BottomRight = [tray_height + offset_height / 2, tray_width + offset_width / 2,tray_depth];//[hidden]
l2BottomLeft = [tray_height + offset_height / 2, 0 - offset_width / 2, tray_depth];//[hidden]

//top

tl = 0;//[hidden]
tr = 1;//[hidden]
br = 2;//[hidden]
bl = 3;//[hidden]
l2tl = 4;//[hidden]
l2tr = 5;//[hidden]
l2br = 6;//[hidden]
l2bl = 7;//[hidden]
offset = 1.5;

module tray(offset, bottomOffset){
  polyhedron(
      points=[
        [topLeft[0] + offset,       topLeft[1] + offset,        topLeft[2] + bottomOffset],
        [topRight[0] + offset,      topRight[1] - offset,       topRight[2] + bottomOffset],
        [bottomRight[0] - offset,   bottomRight[1]  - offset,   bottomRight[2] + bottomOffset],
        [bottomLeft[0] - offset,     bottomLeft[1] + offset,     bottomLeft[2] + bottomOffset],
        [l2TopLeft[0] + offset,     l2TopLeft[1] + offset,      l2TopLeft[2] + bottomOffset],
        [l2TopRight[0] + offset,    l2TopRight[1] - offset,     l2TopRight[2] + bottomOffset],
        [l2BottomRight[0] - offset, l2BottomRight[1] - offset,  l2BottomRight[2] + bottomOffset],
        [l2BottomLeft[0] - offset,  l2BottomLeft[1] + offset,   l2BottomLeft[2] + bottomOffset]],

      faces = [
        [tl,bl,tr], [br,tr,bl],   //base
        [tl,tr, l2tr, l2tl], //top wall
        [l2br, l2tr, tr, br],//right wall
        [l2br, br, bl, l2bl],//bottom wall
        [l2tl, l2bl, bl, tl],//left wall
        [l2tr, l2br, l2tl], [l2br, l2bl, l2tl]//top
      ]
    );
}
difference() {
  tray(0,0.1);
  tray(wall_thickness, floor_thickness);
};
```


[User]
Hey, I'm looking to design a tire tread stamp thing, like in that "Revolution" project. Basically, it's a thin plate that attaches to a bike tire with zip ties and leaves a message when you ride through water. I need to be able to customize the text that gets stamped, obviously, and I'd like to control the text size and spacing a little bit. I think I'd like to have a few options for how the text sits on the plate too - like engraved, embossed, or just hidden inside the plate for a completely smooth stamp.

For the design, I want to use rounded corners for the plate and have a couple of holes for the zip ties. The plate should be reasonably thin, probably around 1mm. I'd like the text to be centered both horizontally and vertically on the plate. I want to specify the font, line spacing, and letter spacing. I'm thinking a default font would be fine, something pretty standard.

I'm providing a link to the original project for reference: http://vimeo.com/97783676 and here is a similar project that uses text: http://streettoolbox.com/wiki/Revolution.

Oh yeah, and could you make it parametric so I can change things like the plate size, text, font size, corner radius, etc. without having to dig deep into the code? I would like the design to be based on the `write.scad` library, but please do not assume that you have the file already - I will be providing it with my files.

[Assistant]
ClipONMessage3.scad:
```
/*
OpenSCAD-File to generate a Customized luggage label
2013-11-01 - kowomike

Needs write.scad as found here:
https://github.com/rohieb/Write.scad

or here:
http://www.thingiverse.com/thing:16193
*/

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

use <write/Write.scad>  //Change to directory where write.scad resides;

// Enter Text here
// Use up to 10 lines as needed; for alignment to center or right, use spaces

/* [Your Text] */
// Enter your text
Message="A";
//line_2="name and";
//line_3="address";
//line_4="";
//line_5="";
//line_6="";
//line_7="";
//line_8="";
//line_9="";
//line_10="";

///* [Text options] */
//Choose text engraving, embossing oder hiding inside
//text_style=-80; // [-80:Deep engraving (80 %),-50:Half way through engraving (50 %),-10:Shallow engraving (10 %),0: Hide text inside (takes 66 %),10:Little embossing (10 %),25:Heavy embossing (25 %) ]

///* [Plate options] */

/* [Hidden] */
//Radius of plate corners [mm]
corner_radius=2;
w = str(Message);
x= w[0];
//Copy single text variables into array
text=[
x
];

//Define additional parameters
charlength=0.686;
charheight=1.7;
descenderfactor=0.2;

//Calculate margins
margin=sqrt(corner_radius);

//Calculate space for slit
insertlength=margin;

//Thickness of text when hidden
hiddenheight=66;

//Find out maximum characters for first 10 lines for centering
maxtextchars = max(len(text[0]),len(text[1]),len(text[2]),len(text[3]),len(text[4]),len(text[5]),len(text[6]),len(text[7]),len(text[8]),len(text[9]));

//Find out how many lines do contain text
tl=[
len(text[0])>0 ? 1 : 0,
];

letter_spacing=1; //[-2:5]
letterspacing=1.0+letter_spacing/10;
line_spacing=2; //[0:5]
linespacing=0.7+line_spacing/10;
text_style=80;
fontsize=15;
font="Letters.dxf";
plate_thickness=1;
slitwidth=2;
textlines=max(tl[0]);

//Calculate plate size based on Text
linelength=charlength*fontsize;
lineheight=charheight*fontsize;

//Part of plate with text
difference () {
	//Plate
	translate ([0,-lineheight*(textlines-1)-(linespacing-1)*lineheight*(textlines-1)-margin,0])
	cube ([linelength+margin*2+insertlength,+lineheight*(textlines-1)+(linespacing-1)*lineheight*(textlines-1)+margin+lineheight+margin,plate_thickness]);

	//"Add" Text if engraved
	//if (text_style<0) {
	//translate ([margin+insertlength,0,0])
		//union () {
			//for (i=[0:textlines-1]) {
			//translate ([0,-lineheight*i+descenderfactor*lineheight-(linespacing-1)*lineheight*i,plate_thickness+plate_thickness*text_style/100-0.05])
			//write(text[i],t=abs(text_style)*plate_thickness/100+0.1,h=fontsize,font=font,space=letterspacing);
			//}
		//}
	//}

	//if (text_style==0) {
	//translate ([margin+insertlength,0,0])
		//union () {
			//for (i=[0:textlines-1]) {
			//translate ([0,-lineheight*i+descenderfactor*lineheight-(linespacing-1)*lineheight*i,plate_thickness+plate_thickness*text_style/100-0.05-(plate_thickness+(plate_thickness*hiddenheight/100))/2])
			//write(text[i],t=hiddenheight*plate_thickness/100+0.1,h=fontsize,font=font,space=letterspacing);
			//}
		//}
	//}

	//Cut rounded corners
	//Top Right
	translate ([margin+insertlength,0,0])
	translate ([linelength+margin-corner_radius,lineheight+margin-corner_radius,-0.05])
	difference () {
		cube ([corner_radius*2,corner_radius*2,plate_thickness+0.1]);
		translate ([0,0,-0.1])
		cylinder (r=corner_radius,h=plate_thickness+0.2,$fn=100);
	}

	//Bottom Right
	translate ([margin+insertlength,0,0])
	translate ([linelength+margin-corner_radius,-lineheight*(textlines-1)-(linespacing-1)*lineheight*(textlines-1)-margin+corner_radius,-0.05])
	difference () {
		translate ([0,-corner_radius*2,0])
		cube ([corner_radius*2,corner_radius*2,plate_thickness+0.1]);
		translate ([0,0,-0.1])
		cylinder (r=corner_radius,h=plate_thickness+0.2,$fn=100);
	}

	//Top Left
	translate ([0,0,0])
	translate ([corner_radius,lineheight+margin-corner_radius,-0.05])
	difference () {
		translate ([-corner_radius*2,0,0])
		cube ([corner_radius*2,corner_radius*2,plate_thickness+0.1]);
		translate ([0,0,-0.1])
		cylinder (r=corner_radius,h=plate_thickness+0.2,$fn=100);
	}

	//Bottom Left
	translate ([0,0,0])
	translate ([corner_radius,-lineheight*(textlines-1)-(linespacing-1)*lineheight*(textlines-1)-margin+corner_radius,-0.05])
	difference () {
		translate ([-corner_radius*2,-corner_radius*2,0])
		cube ([corner_radius*2,corner_radius*2,plate_thickness+0.1]);
		translate ([0,0,-0.1])
		cylinder (r=corner_radius,h=plate_thickness+0.2,$fn=100);
	}

	union () {
		translate ([(linelength+4)/2-3,1.5,0])
		cylinder (r=slitwidth/2,h=plate_thickness+0.1,$fn=100);
		translate ([(linelength+4)/2-3,0.5,0])
		cube ([6,slitwidth,plate_thickness+0.1]);
		translate ([(linelength+4)/2+3,1.5,0])
		cylinder (r=slitwidth/2,h=plate_thickness+0.1,$fn=100);
	}

	union () {
		translate ([(linelength+4)/2-3,lineheight-1.5,0])
		cylinder (r=slitwidth/2,h=plate_thickness+0.1,$fn=100);
		translate ([(linelength+4)/2-3,lineheight-2.5,0])
		cube ([6,slitwidth,plate_thickness+0.1]);
		translate ([(linelength+4)/2+3,lineheight-1.5,0])
		cylinder (r=slitwidth/2,h=plate_thickness+0.1,$fn=100);
	}

}

	//Cut out hole
	//translate ([margin,-lineheight*(textlines/2-1)-(linespacing-1)*lineheight*(textlines/2-1)-slitlength/2+slitwidth/2,-0.05])
	//union () {
		//translate ([slitwidth/2,slitlength-slitwidth,0])
		//cylinder (r=slitwidth/2,h=plate_thickness+0.1,$fn=100);
		//cube ([slitwidth,slitlength-slitwidth,plate_thickness+0.1]);
		//translate ([slitwidth/2,0,0])
		//cylinder (r=slitwidth/2,h=plate_thickness+0.1,$fn=100);
	//}
  //End difference

//Add text if embossed
if (text_style>0) {
	translate ([margin+insertlength,0,0])
		color ("YellowGreen")
		union () {
			for (i=[0:textlines-1]) {
			translate ([9,5.25,plate_thickness])
        rotate ([0,180,0])
			write(text[i],t=-0.9,h=fontsize,font=font,space=letterspacing);
			}
}
}
```


[User]
I'm looking to create a parametric OpenSCAD library for generating timing belt sections. I'd like to be able to specify the belt profile (like GT2 2mm, T2.5, T5, T10, and MXL), the belt width, and the length of the belt section. I also need to be able to generate curved belt segments using a radius and arc angle.

Essentially, I want to be able to create both straight belt sections and curved belt sections of arbitrary length/angle, with clean ends that can butt together. I think the profiles should be defined by points, and then extruded linearly. I want the belts to be centered at z=0 and extend along the x-axis.

Ideally, the library should have two main modules: `belt_len` and `belt_angle`. The `belt_len` module should take the profile type, the belt width, and the length of the straight segment as input, and output the belt section. The `belt_angle` module should take the profile type, the radius of the curve, the belt width, and the angle of the arc as input, and output the curved belt segment.

I'd also like to be able to do a test render by calling `test_belt()`, to quickly visually inspect and compare the various segments. This should show a few different straight segments (belt_len) with different profiles, along with some curved ones (belt_angle) of different profiles as well. And throw in a few combinations, like two straight pieces on either side of a curve.

I don't need any cosmetic teeth liaisons - the modules don't need to concern themselves with any teeth between segments. I think a simple intersection to make the cutouts for the teeth will be sufficient.

Could you provide an OpenSCAD library that does this?

[Assistant]
timing_belts.scad:
```
/*Parametric belting section generator
 * types GT2 2mm T2.5 T5 T10 MXL
 *
 * (c) ALJ_rprp
 *
 * Derived from http://www.thingiverse.com/
 * thing:19758 By The DoomMeister
 * thing:16627 by Droftarts
 *
 * licence GPL 2.1 or later
 *
 * deal properly with ends
 * allow circular segments
 * length is given in mm not nb of teeth
 * belt is centered at z=0 and extend along x
 *
 * TODO : add ofset for cosmetic teeth liaisons between segments
 *
 * usage :
 * belt_angle(prf = tT2_5, rad=25, bwdth = 6, angle=90,fn=128)
 * belt_len  (prf = tT2_5, belt_width = 6, len = 10)
 */

// profiles
tGT2_2=0;
tT2_5	=1;
tT5	=2;
tT10	=3;
tMXL	=4;

test_belt();

module test_belt() {
	translate([-00.5,0,5.5])cube([1,40,1]);

	belt_len(profile = tT10, belt_width = 10, len = 100);
	translate([0,0,-20])color("red")belt_len(profile = tT5, belt_width = 10, len = 100);
	translate([0,0,-40])color("green")belt_len(profile = tT2_5, belt_width = 10, len = 80);
	translate([0,0,-60])color("blue")belt_len(profile = tGT2_2, belt_width = 10, len = 100);
	translate([0,0,-80])color("orange")belt_len(profile = tMXL, belt_width = 10, len = 100);

	translate([0,0,-0])  belt_angle(tT10,20,10,180);
	translate([0,0,-20]) belt_angle(tT5,15,10,90);
	translate([0,0,-40]) belt_angle(tT2_5,25,10,120);
	translate([0,0,-60]) belt_angle(tGT2_2,30,10,40);
	translate([0,0,-80]) belt_angle(tMXL,30,10,40);

	translate([0,0,-100])color("aquamarine") {
		belt_len(tT2_5,10, 50);
		translate([50,30,0]) rotate([0,0,180]) belt_len(tT2_5,10,50);
		translate([ 0,30,0]) rotate([0,0,180]) belt_angle(tT2_5,15,10,180);
		translate([50,0,0]) rotate([0,0,0]) belt_angle(tT2_5,15,10,180);
	}
}

/* there is no partial rotate extrude in scad, hence the workaround
 * note that the pie slice will silently drop angles > 360 */
module p_slice(radius, angle,height,back_t=0.6) {
	pt_slc = [[0,radius],
		 		 [0 ,-back_t],
		 		 [radius,-back_t],
		 		 [radius+back_t,radius],
		 		 [radius+back_t,radius*2],
				 [0,radius*2+back_t],
				 [-radius-back_t,radius*2+back_t],
				 [-radius-back_t,radius],
				 [-radius-back_t,-back_t],
		 		 [(radius+back_t)*sin(angle),(radius+back_t)*(1-cos(angle))-back_t]];

	if (angle<=90) {
		linear_extrude(height = height+0.2, center=true)
			polygon( points = pt_slc,
						paths=[[0,1,2,9]]);
	}else if (angle<=180){
		linear_extrude(height = height+0.2, center=true)
			polygon( points = pt_slc,
						paths=[[0,1,2,3,4,9]]);
	}else if (angle<=270){
		linear_extrude(height = height+0.2, center=true)
			polygon( points = pt_slc,
						paths=[[0,1,2,3,4,5,6,9]]);
	}else if (angle<360) {
		linear_extrude(height = height+0.2, center=true)
			polygon( points = pt_slc,
						paths=[[0,1,2,3,4,5,6,7,8,9]]);
	}
}

dp=5;

module belt_angle(prf = tT2_5, rad=25, bwdth = 6, angle=90,fn=128) {
	av=360/2/rad/3.14159*tpitch[prf];
	bk=bk_thick[prf];

	nn=ceil(angle/av);
	ang=av*nn;
	intersection(){
	p_slice(rad,angle,bwdth,bk_thick[prf]);
		union () {
			for( i = [0:nn]){
				translate ([0,rad,-bwdth/2])rotate ([0,0,av*i])translate ([0,-rad,0])
						draw_tooth(prf,0,bwdth);
		}
		translate ([0,rad,-bwdth/2]) rotate_extrude(angle = 90, $fn=fn)
												polygon([[rad,0],[rad+bk,0],[rad+bk,bwdth],[rad,bwdth]]);
		}
	}
}

//Outer Module
module belt_len(profile = tT2_5, belt_width = 6, len = 10){
	if ( profile == tT2_5 ) { _belt_len(prf=profile,len = len,bwdth = belt_width);}
	if ( profile == tT5 )   { _belt_len(prf=profile,len = len,bwdth = belt_width);}
	if ( profile == tT10 )  { _belt_len(prf=profile,len = len,bwdth = belt_width);}
	if ( profile == tMXL )	{ _belt_len(prf=profile,len = len,bwdth = belt_width);}
	if ( profile == tGT2_2 ){ _belt_len(prf=profile,len = len,bwdth = belt_width);}
}

//inner module
module _belt_len(prf = -1, len = 10, bwdth = 5) {

	n=ceil(len/tpitch[prf]);

	translate ([0,0,-bwdth/2]) intersection() {
		union(){
			for( i = [0:n]) {
				draw_tooth(prf,i,bwdth);
			}
		translate([-1,-bk_thick[prf],0])cube([len+1,bk_thick[prf],bwdth]);
		}
	translate([0,-bk_thick[prf],0])cube([len,max_h[prf]+bk_thick[prf],bwdth]);
	}
}

module draw_tooth(prf,i,bwdth) {
				if ( prf == tT2_5 ) { translate([tpitch[prf]*i,0,0])
													linear_extrude(height=bwdth) polygon(pf_T2_5);}
				if ( prf == tT5 ) { translate([tpitch[prf]*i,0,0])
													linear_extrude(height=bwdth) polygon(pf_T5);}
				if ( prf == tT10 ) { translate([tpitch[prf]*i,0,0])
													linear_extrude(height=bwdth) polygon(pf_T10);}
				if ( prf == tMXL ) { translate([tpitch[prf]*i,0,0])
													linear_extrude(height=bwdth) polygon(pf_MXL);}
				if ( prf == tGT2_2 ) { translate([tpitch[prf]*i,0,0])
													linear_extrude(height=bwdth) polygon(pf_GT2_2);}
}

/************************************
 *				DATA TABLES					*
 ************************************/
tpitch = [2,2.5,5,10,2.032];
bk_thick=[0.6,0.6,1,2,0.64];
max_h=[0.76447, 0.699911, 1.189895, 2.499784, 0.508035];

pf_GT2_2=  [[ 0.747183,-0.5     ],[ 0.747183, 0       ],[ 0.647876, 0.037218],
				[ 0.598311, 0.130528],[ 0.578556, 0.238423],[ 0.547158, 0.343077],
				[ 0.504649, 0.443762],[ 0.451556, 0.53975 ],[ 0.358229, 0.636924],
				[ 0.2484  , 0.707276],[ 0.127259, 0.750044],[ 0       , 0.76447 ],
				[-0.127259, 0.750044],[-0.2484  , 0.707276],[-0.358229, 0.636924],
				[-0.451556, 0.53975 ],[-0.504797, 0.443762],[-0.547291, 0.343077],
				[-0.578605, 0.238423],[-0.598311, 0.130528],[-0.648009, 0.037218],
				[-0.747183, 0       ],[-0.747183,-0.5]];
pf_T2_5=   [[-0.839258,-0.5     ],[-0.839258, 0       ],[-0.770246, 0.021652],
				[-0.726369, 0.079022],[-0.529167, 0.620889],[-0.485025, 0.67826 ],
				[-0.416278, 0.699911],[ 0.416278, 0.699911],[ 0.484849, 0.67826 ],
				[ 0.528814, 0.620889],[ 0.726369, 0.079022],[ 0.770114, 0.021652],
				[ 0.839258, 0       ],[ 0.839258,-0.5]];
pf_T5= 	  [[-1.632126,-0.5     ],[-1.632126, 0       ],[-1.568549, 0.004939],
				[-1.507539, 0.019367],[-1.450023, 0.042686],[-1.396912, 0.074224],
				[-1.349125, 0.113379],[-1.307581, 0.159508],[-1.273186, 0.211991],
				[-1.246868, 0.270192],[-1.009802, 0.920362],[-0.983414, 0.978433],
				[-0.949018, 1.030788],[-0.907524, 1.076798],[-0.859829, 1.115847],
				[-0.80682 , 1.147314],[-0.749402, 1.170562],[-0.688471, 1.184956],
				[-0.624921, 1.189895],[ 0.624971, 1.189895],[ 0.688622, 1.184956],
				[ 0.749607, 1.170562],[ 0.807043, 1.147314],[ 0.860055, 1.115847],
				[ 0.907754, 1.076798],[ 0.949269, 1.030788],[ 0.9837  , 0.978433],
				[ 1.010193, 0.920362],[ 1.246907, 0.270192],[ 1.273295, 0.211991],
				[ 1.307726, 0.159508],[ 1.349276, 0.113379],[ 1.397039, 0.074224],
				[ 1.450111, 0.042686],[ 1.507589, 0.019367],[ 1.568563, 0.004939],
				[ 1.632126, 0       ],[ 1.632126,-0.5]];
pf_T10=    [[-3.06511 ,-1       ],[-3.06511 , 0       ],[-2.971998, 0.007239],
				[-2.882718, 0.028344],[-2.79859 , 0.062396],[-2.720931, 0.108479],
				[-2.651061, 0.165675],[-2.590298, 0.233065],[-2.539962, 0.309732],
				[-2.501371, 0.394759],[-1.879071, 2.105025],[-1.840363, 2.190052],
				[-1.789939, 2.266719],[-1.729114, 2.334109],[-1.659202, 2.391304],
				[-1.581518, 2.437387],[-1.497376, 2.47144 ],[-1.408092, 2.492545],
				[-1.314979, 2.499784],[ 1.314979, 2.499784],[ 1.408091, 2.492545],
				[ 1.497371, 2.47144 ],[ 1.581499, 2.437387],[ 1.659158, 2.391304],
				[ 1.729028, 2.334109],[ 1.789791, 2.266719],[ 1.840127, 2.190052],
				[ 1.878718, 2.105025],[ 2.501018, 0.394759],[ 2.539726, 0.309732],
				[ 2.59015 , 0.233065],[ 2.650975, 0.165675],[ 2.720887, 0.108479],
				[ 2.798571, 0.062396],[ 2.882713, 0.028344],[ 2.971997, 0.007239],
				[ 3.06511 , 0       ],[ 3.06511 ,-1]];
pf_MXL=    [[-0.660421,-0.5     ],[-0.660421, 0       ],[-0.621898, 0.006033],
				[-0.587714, 0.023037],[-0.560056, 0.049424],[-0.541182, 0.083609],
				[-0.417357, 0.424392],[-0.398413, 0.458752],[-0.370649, 0.48514 ],
				[-0.336324, 0.502074],[-0.297744, 0.508035],[ 0.297744, 0.508035],
				[ 0.336268, 0.502074],[ 0.370452, 0.48514 ],[ 0.39811 , 0.458752],
				[ 0.416983, 0.424392],[ 0.540808, 0.083609],[ 0.559752, 0.049424],
				[ 0.587516, 0.023037],[ 0.621841, 0.006033],[ 0.660421, 0       ],
				[ 0.660421,-0.5]];

```


[User]
I'm looking to create a parametric tray with a circular base and top, and walls that slant outwards. I'd like to be able to control the bottom radius, the top radius, the overall depth of the tray, the thickness of the walls, and the thickness of the base. I'd also like the tray to be generated using `rotate_extrude` with a configurable number of sides.

Could you generate an OpenSCAD file that can do this? I'm not too fussy about how it does it, but I'd prefer to see parameters that are easy to understand and modify. I don't need any special libraries, just the standard OpenSCAD features.

[Assistant]
roundTray.scad:
```
/* [Cube] */
// preview[view:south, tilt:top]
// in mm
bottom_radius = 30;
// in mm
top_radius = 40;
// in mm
tray_depth_mm = 25;

sides = 10;
// in mm
wall_thickness = 1.5;
// in mm
floor_thickness = 1.5;

/* [Hidden] */
// ignore variable values

center_outer = [0, 0];//[hidden]
bottom_outer = [bottom_radius, 0];//[hidden]
top_outer = [top_radius, tray_depth_mm];//[hidden]
top_inner = [top_radius - wall_thickness, tray_depth_mm];//[hidden]
bottom_inner = [bottom_radius - wall_thickness, floor_thickness];//[hidden]
center_inner = [0, floor_thickness];//[hidden]

module round_tray(offset, bottomOffset){

  rotate_extrude($fn=sides)
    polygon( points=[
      center_outer,
      bottom_outer,
      top_outer,
      top_inner,
      bottom_inner,
      center_inner
    ]
  );

}
// difference(){

  round_tray(0,0.1);
  // round_tray(wall_thickness, floor_thickness);
// };
```


[User]
Hey, I've got this idea for a building block, a kind of space-filling, interlocking brick, and I need some help turning it into a flexible OpenSCAD design. The core idea is based on a recursive 3D H-tree structure, and I want to make it parametric so I can play around with different sizes and levels of complexity.

Essentially, it starts with a central rod, then branches off into two more rods at the end, and then *those* branch off again and again, and so on. The branches are all cylinders and the whole thing is meant to be 3D printable, ideally with dual extrusion for dissolvable support material.

Here are the specifics I have in mind:

*   **Base Structure:** The core of the brick is this recursive 3D H-tree. I need a module that generates this tree, taking the level of recursion as an input parameter (e.g. `levels = 3` would generate a 3 level tree).

*   **Branch Geometry:** The rods that make up the tree should be generated by a module that creates a cylinder. I want to be able to tweak the cylinder's length and radius for each branch level, so I'd need the branch dimensions to be dependent on the level. For example, a lower level branch would be long and thick, and the higher levels would be shorter and thinner. Also, maybe we could add in the option for the branch to be elliptical for some variation.

*   **Interlocking:** The key feature is that the bricks lock together when pressed. I don't have a perfect design for that yet, but maybe some kind of soft, deformable material at the ends of the branches to create an interlocking effect when pressed. Maybe add a spherical end that deforms easily but has a wide contact patch.

*   **Customization:** I would need parameters to control things like:
    *   Number of recursion levels (`levels`)
    *   Base rod length and radius (`base_length`, `base_radius`)
    *   Scale factor for each level, both the length and radius (`length_scale`, `radius_scale`)
	*   An option to add spherical ends to the branches (`spherical_ends = true/false`)
    *   Spherical end diameter (`sphere_diameter`)
    *   The number of faces used to create the spheres and cylinders (`$fn`)
	*	The scale factor for elliptical cylinders (`elliptical_scale = [1, 2]`)

*   **Output:** I want the main module to generate the entire brick, so all of the branches in the recursive structure.

I'm thinking that these should all be customizable at the top of the file so I can easily tweak things and generate different sizes and shapes of the brick. No additional libraries, please!

Can you help me set up this design in OpenSCAD? I'm excited to see how it comes together.

[Assistant]
MarsBrick.scad:
```
// by Les Hall
// started Fri May 30 2014
//
//
// This structure is an antenna.  It is a space filling 3D H-Tree design
// that has a 2^n periodic bandwidth.  It contains electronics which
// enable it to receive and transmit at any desired frequency or band of
// frequencies.  This object is printed in conductive material with embedded
// integrated circuits.
//
// Each sphere and each rod is printed separately and the final structure
// gets coated with a conductive polymer.  Circuitry placed in each sphere
// has three contacts:  base, - and +.  Reception and transmission of
// signals occurs by monitoring and / or driving these pins.
//
// the antenna is held by the central bar grip or by gently holding the
// outside of it.  It generates it's own power from received radio signals
// and transmits to and from local devices via bluetooth and wifi.
//
// This structure is also used as a gripper building material.  As such it
// has properties of efficient space filling and the ability to adhere the
// material to other material blocks by simply pressing them together.
//

/* [Base Geometry] */

// number of levels to fabricate (levels)
levels = 8;

/* [Details] */

// curvature smoothness (faces)
$fn = 8;

/* [Hidden] */

// by Oskar
// emailed to me on Tue May 6, 2014
// i changed it a little...

// a branch, 16 long, 1 wide
module branch() {
	color([0.25, 0.75, 0.75])
	cylinder(h=16,r=1, center=true);
}

module tree(level) {
	branch();

	if (level > 0)
	for (side = [-1:2:1])       	// generate 2 children
	translate([0, 0, side * 8])   // translate up to the tip of the branch
	rotate(180 + side * 90)       // rotated at different angles
	rotate(90, [1, 0, 0])      	// branching angle
	scale(0.8)
	tree(level-1);
}

rotate(360*$t, [0.25, 0.5, 1])	// animate!
tree(levels);
```


[User]
Hey, I need some help designing a customizable wooden finger joint structure using OpenSCAD. I have a basic shape defined as a 2D polygon in `Wood_test.scad`, but I want to make it much more flexible and usable.

Essentially, I'm envisioning a series of interlocking "fingers" that slide together, kind of like a comb, but I want to be able to easily adjust the overall size, the number of fingers, and the thickness of the wood. It should be fully parametric.

Here are the key parameters I'd like to control:

*   **`Wood_size`**:  This will determine the overall length of the base wood piece.  I've given an example of values like 10, 20, and 30 representing Small, Medium, and Large.
*   **`Wood_length`**: This parameter will define the length of the "fingers" that stick out.
*  **`Wood_height`**: This controls the height of each finger.
*   **`Number_of_fingers`**:  This will specify how many fingers there are on each piece.  I'd want to be able to go from about 2 to 10.
*   **`Wood_thickness`**:  This parameter controls the thickness of the material. I'd like to be able to vary this from 1 to 5 units.

I'd like two pieces, one where the "fingers" point up, and another with the fingers pointing down. They should be designed such that they can interlock smoothly.

Could you generate the OpenSCAD code for these two parts? The code needs to be organized so that I can easily change those parameters at the top, and all of the other aspects of the model update appropriately. Also, let's say that the fingers need to be symmetrical and evenly spaced.

I don't need to use any special libraries for this, just the core OpenSCAD functionality. Thanks!

[Assistant]
Wood_test.scad:
```
linear_extrude(height = 2, center = true, convexity = 10, twist = 0)
polygon([[0,0],[20,0],[20,2],[18,2],[18,4],[20,4],[20,6],[18,6],[18,8],[20,8],[20,10],[0,10],[0,8],[2,8],[2,6],[0,6],[0,4],[2,4],[2,2],[0,2]],[[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19]]);

Wood_size = 20; // [10:Small,20:Medium,30:Large]

Wood_length = 10;
Wood_height = 5;

// How many fingers do you want for articulation?
Number_of_fingers = 5; // [2:10]

// How thick should the wood be?
Wood_thickness = 2; // [1:5]
```


[User]
I want to create a laser-cuttable wooden articulation joint. I'm thinking of something with finger joints, where a set of fingers on one piece slot into matching spaces on another. I'd like to be able to control the size of the wood pieces, their thickness, the number of fingers for the joint, and the length and height of the wood pieces themselves.

Specifically, I'd like to have these parameters:

*   `Wood_size`: This will control an overall 'size' parameter and have values of `10`, `20`, or `30` with labels "Small", "Medium", and "Large" respectively. This size should determine the spacing between the fingers. A larger wood size should have a larger spacing.
*   `Wood_length`: This controls the length of the wood piece.
*  `Wood_height`: This controls the height of the wood piece.
*   `Number_of_fingers`: This will be an integer between 2 and 10 that controls how many fingers are on the joint.
*   `Wood_thickness`:  This is the thickness of the wood piece, and should have values between 1 and 5.

I need two pieces of wood that interlock. The fingers on the first piece should be rectangles that extend out from the base piece along the Wood_length dimension, and the cutouts on the second piece should fit those fingers exactly. The wood pieces should be centered on the origin. Can you generate an OpenSCAD file that does this?

[Assistant]
Wood_test.scad:
```

Wood_size = 20; // [10:Small,20:Medium,30:Large]

Wood_length = 10;
Wood_height = 5;

// How many fingers do you want for articulation?
Number_of_fingers = 5; // [2:10]

// How thick should the wood be?
Wood_thickness = 2; // [1:5]

difference() {
  union() {
    translate([0, 0, Wood_size/2]) cube([Wood_length,Wood_height,Wood_thickness], center=true);
} }

```


[User]
I'd like to design a tape loom for weaving ribbons, and I'd like to be able to customize it for different thread counts and thicknesses. I'm envisioning a design with a series of slits and holes that the threads pass through.

Specifically, I need to be able to specify:

*   The number of slits (which determines the number of holes and maximum threads)
*   The diameter of the holes, which also dictates the width of the slits, since they're the same width.
*   The height of the slits.
*   The overall thickness of the loom itself.

I'd also like to have some control over the design's "look and feel" such as:
*   The wall thickness between the slits and holes as a percentage of the hole diameter.
*   The radius of any rounded edges.
*   How much extra space is available around the main pattern of slits and holes to create a frame, with control over both the width and height separately.

It should use a basic cube shape for the base. For the holes, I'm thinking we should do a rotate_extrude of a 2D shape with the inner hole and edge rounding, and use square extrudes for the slits. The holes should be in two rows (at the top and bottom of the slits).

I'd like all these parameters to be easily adjustable in OpenSCAD. Can you help me generate a parametric design? I don't have any libraries installed, so it'd need to be all from scratch using built-in OpenSCAD functions.

[Assistant]
tape_loom.scad:
```
//Tape loom
//By Johan Bengtsson qwerty_42@hotmail.com

/* [Basics] */

//the nymber of slits, number of holes will be numSlits+1 and maximum number of threads 2*numSlits+1
numSlits=10;

//the hole diameter and slit width [mm], must be > 0
threadSize=2;

//the height of each slit [mm]
slitHeight=50;

//thickness of the entire unit [mm]
thickness=4;

/* [Advanced] */

//the wall thickness between slits and holes [% of hole diameter], must be > 0
wallThickness=50;

//radius for all edges around the holes and slits [mm]
edgeRoundness=0.5;

//extra width of the frame, may be 0 for no extra width [mm]
frameWidth=3;

//extra height of the frame, may be 0 for no extra height [mm]
frameHeight=10;

/* [Hidden] */

barWidth=threadSize*(1+wallThickness/50);

edgeDiameter=edgeRoundness*2;

preview_tab="a";

//makes the customizer preview faster than the final rendering by using lower quality
if (preview_tab=="")
	tape_loom($fa=5,$fs=.1);
else
	tape_loom($fa=5,$fs=.3);

module tape_loom()
{
	difference()
	{
		cube([(barWidth+threadSize)*numSlits+barWidth+frameWidth*2,slitHeight+(barWidth+frameHeight)*2,thickness],center=true);
		for (i=[0:numSlits])
		{
			translate([(i-numSlits/2)*(barWidth+threadSize),0,0])
			{
				rotate_extrude()
				intersection()
				{
					hole_2d();
					translate([0,-thickness,0]) square([threadSize,thickness*2]);
				}
			}
		}
		for (i=[1:numSlits])
		{
			translate([(i-numSlits/2-0.5)*(barWidth+threadSize),0,0])
			{
				translate([0,slitHeight/2-threadSize/2,0])
				rotate_extrude()
				intersection()
				{
					hole_2d();
					translate([0,-thickness,0]) square([threadSize,thickness*2]);
				}
				translate([0,-slitHeight/2+threadSize/2,0])
				rotate_extrude()
				intersection()
				{
					hole_2d();
					translate([0,-thickness,0]) square([threadSize,thickness*2]);
				}
				rotate([90,0,0]) linear_extrude(height=slitHeight-threadSize,center=true)
					hole_2d();
			}

		}
	}
}

module hole_2d()
{
	difference()
	{
		square([threadSize+edgeRoundness*2,thickness+1],center=true);
		translate([threadSize/2+edgeRoundness+1,0,0]) square([edgeRoundness*2+2,thickness-edgeDiameter],center=true);
		translate([-threadSize/2-edgeRoundness-1,0,0]) square([edgeRoundness*2+2,thickness-edgeDiameter],center=true);
		translate([threadSize/2+edgeRoundness,thickness/2-edgeRoundness,0]) circle(r=edgeRoundness);
		translate([threadSize/2+edgeRoundness,-thickness/2+edgeRoundness,0]) circle(r=edgeRoundness);
		translate([-threadSize/2-edgeRoundness,thickness/2-edgeRoundness,0]) circle(r=edgeRoundness);
		translate([-threadSize/2-edgeRoundness,-thickness/2+edgeRoundness,0]) circle(r=edgeRoundness);
	}
}
```


[User]
Okay, I'd like to create a customizable keychain. The base shape is going to be a slightly stylized, sort of rounded rectangle with a hole for attaching it to a keyring. I want to be able to add text to the keychain, and I'd like to be able to choose whether that text is embossed (sticks out) or engraved (cut in).

For the base shape, it should be a 2D polygon that is then extruded. The points of the polygon are: `[2,0],[4,0],[5,1],[5,6],[3,8],[1,8],[0,7],[0,2]`, with a few internal paths that should be cut out. `[2,0.5],[4,0.5],[0.5,4],[0.5,2]`, these cut out points will be an inner rect and two circles, like this: the internal paths are `[[0,1,2,3,4,5,6,7],[8,9,10,11],[12,13,14,15]]` with the points indexed as they are above. This polygon will be extruded to a height of 0.2, and then I want to use `minkowski()` with a cylinder of the same height and radius 0.3 to round the edges. The entire shape should be scaled by `[5, 5, 5]`.

The text should be customizable. I need to be able to set the text string itself, the font (and ideally provide a few font options), and the size of the text, as well as whether the text is engraved or embossed. The font options I want to include are "knewave.dxf", "Letters.dxf", "orbitron.dxf", "BlackRose.dxf", and "braille.dxf". It should also be able to change the spacing between the letters. The text should start at position `[12, 20, 1.4]`, rotated by 130 degrees around the z axis. The text should also be centered. When engraved, the text should be subtracted from the base shape. When embossed, it should be added to the base shape.

I also want to use the `write.scad` library.

Could you generate the necessary OpenSCAD files for this?

[Assistant]
Keychain13.scad:
```
use <write/Write.scad> // use <Write.scad>
// preview[view:south, tilt:top]

//
// CUSTOMIZING

/* [Text] */ //Choose to add text
//Do you want to add text?
show_text="yes"; //[yes,no]
//Text Font
text_font="knewave.dxf";//[knewave.dxf:Knewave, Letters.dxf:Letter, orbitron.dxf:Orbitron, BlackRose.dxf:BlackRose, braille.dxf:Braille]
//What do you want the text to say?
text_itself="JOHN";
//default at position [0,0,0]
//text left to right
//XposText = -9; //[-5:5]
//y to come in front
//YposText = 1.5; //[-50:50]
//text bottom to top
//ZposText = 2; //[1:20]

//whether embossed(outwards) or engraved(inwards) text
text_allignment="engraved"; //[embossed,engraved]

//Text size(height)
text_size = 8; //[8:11]
//Spacing between adjacent letters
//text_spacing=1.5;

//default uploaded image height 10
//image_height = 0; //[-50:50]

// Load a 100x100 pixel image. (images will be automatically stretched to fit) Simple, high contrast images like logos work best.
//image_file = "image-surface.dat"; // [image_surface:100x100]

//
// ASSEMBLE BUILDING
//
if(text_allignment=="embossed"){
    union(){
		keychain(1);
		if (show_text=="yes") {
		textPart();
		}//end-of-show_text
	}
}
if(text_allignment=="engraved"){
	render()
	difference(){
		keychain(1);
		if (show_text=="yes") {
		textPart1();
		}//end-of-show_text
	}
}

module textPart(){

//	translate([0,-0.5,0])
	translate([12,20,1.4]){
rotate(130,[0,0,1])
//rotate(-20,[0,0,1])
  	//   scale([text_size,text_size,text_size]){
			color("salmon")

			write(text_itself,t=1.3,h=text_size,font=text_font,space=1.3, center = true);

		}
}

module textPart1(){

//	translate([0,-0.5,0])
	translate([12,20,1.4]){
rotate(130,[0,0,1])

  	//   scale([text_size,text_size,text_size]){
			color("salmon")

			write(text_itself,t=1.3,h=text_size,font="Letters.dxf",space=1.3, center = true);

		}
}

module keychain(scale) {
$fn=20;
scale([5,5,5])
minkowski()
{
linear_extrude(height = 0.2, center = true, convexity = 10, twist = 0)
polygon(points=[[2,0],[4,0],[5,1],[5,6],[3,8],[1,8],[0,7],[0,2]
,[2,0.5],[4,0.5],[0.5,4],[0.5,2]
],
paths=[[0,1,2,3,4,5,6,7],[8,9,10,11],[12,13,14,15]]);
cylinder(h=0.2,r=0.3,center=true);
}
}
```