[User]
Hey, I'm looking to get an OpenSCAD file created for a Swiss Army Knife-style keyring side replacement. I have some specific dimensions and features in mind that I need to be parametric.

The basic shape is a rounded rectangle, and it needs to have cutouts for screw holes and optional captive nut holes. It also needs some cutouts for fingernail access to the tools. I'd like to be able to switch between screwhead holes and captive nut holes. I need to control the overall length and width of the body, the radius of the rounded edges, the thickness, the position of the screw holes, and the size of the cutouts. I also need an optional keyring clip to be attached at one end.

Here are the specifics I'm looking to parameterize:

*   **bodyLength:** The overall length of the rectangular body
*   **bodyWidth:** The overall width of the body
*   **curvatureOfEdges:** The radius for the rounded edges
*   **curvatureResolution:** The resolution for the rounded edges (number of segments)
*   **screwHoleSize:** The diameter of the screw holes
*   **screwHeadSize:** The diameter of the screw head holes (for countersinking)
*   **sideThickness:** The thickness of the side
*   **cutoutOffset:** The offset from the center screw hole to the fingernail cutout location
*  **keyHoleOffset:** The distance from each end of the body to the screw hole nearest the end.
*   **renderNutHoles:** A boolean variable (1 or 0) where 1 creates captive nut holes and a keyring clip, and 0 creates screwhead holes
*  **nutSize:** The size of the nut hole. Assume a hex nut.
* **nutDepth:** The depth of the nut hole.

The main body should be created using Minkowski sums, hull, and cylinder primitives. The screw holes should be simple cylinders. The nut holes should be hexagonal cutouts with a slightly larger diameter and depth to accommodate nuts. The fingernail opener cutouts are spheres subtracted from the body. The bottom of the main body should also be cut off slightly to make it flat. The keyring clip should be an optional addition.

For the captive nut option, I'd like to include a keyring clip at one end, and it should be created using a hull with cylinders, then subtracting a cylinder to create the loop opening.

Could you create an OpenSCAD file with these parameters, taking care to clearly document the functions? I'd prefer to use the built-in OpenSCAD functions and avoid any external libraries. I’d like to keep everything in one file, if possible, for simplicity.

[Assistant]
uploads-a9-29-67-e9-47-Swiss_Army_Keyring_Cutout.scad:
```
//Swiss Army Keyring replacement side with slots
//
//By Mark Benson CC NC 2013
//
//Based on http://www.thingiverse.com/thing:92847 by outcastrc

include <functions.scad>;

bodyLength = 78;
bodyWidth = 22;
curvatureOfEdges = 3.5;
curvatureResolution = 20;
screwHoleSize = 4;
screwHeadSize = 6;
sideThickness = 6;
cutoutOffset = 12; //Fingernail offset from centre hole of model
keyHoleOffset = 6.5; //How far from the end of the body the key holes are

renderNutHoles = 1; //If 1, model will include nut holes and keyring clip
						//If 0, model will include screwhead holes

difference()
{
	//Body
	minkowski()
	{
		hull()
		{
			translate([bodyWidth/2,0,0])
			cylinder(r=(bodyWidth-(2*curvatureOfEdges))/2,h=sideThickness*2);
			translate([bodyLength-bodyWidth/2,0,0])
			cylinder(r=(bodyWidth-(2*curvatureOfEdges))/2,h=sideThickness*2);
		}
		sphere(r=curvatureOfEdges, $fn=curvatureResolution);
	}

	//Cut outs
	union()
	{
		//Screw Hole Left
		translate([(keyHoleOffset),0,0])
		cylinder(r=screwHoleSize/2,h=30,$fn=20);

		//Screw Hole Middle
		translate([(bodyLength/2),0,0])
		cylinder(r=screwHoleSize/2,h=30,$fn=20);

		//Screw Hole Right
		translate([bodyLength-keyHoleOffset,0,0])
		cylinder(r=screwHoleSize/2,h=30,$fn=20);

		if (renderNutHoles == 1)
		{
			//Captive nut Hole Left
			translate([keyHoleOffset,0,sideThickness*2])
			nut(5.5,4);

			//Captive nut Hole Middle
			translate([(bodyLength/2),0,sideThickness*2])
			nut(5.5,4);

			//Captive nut Hole Right
			translate([bodyLength-keyHoleOffset,0,sideThickness*2])
			nut(5.5,4);

			//Fingernail opener cutout
			translate([(bodyLength/2)+cutoutOffset,15,15])
			sphere(r=10);

			//Fingernail opener cutout
			translate([(bodyLength/2)-cutoutOffset,-15,15])
			sphere(r=10);
		}
		else
		{
			//Countersink Hole Left
			translate([keyHoleOffset,0,sideThickness*2.25])
			cylinder(r=screwHeadSize/2,h=30,$fn=20);

			//Countersink Hole Middle
			translate([(bodyLength/2),0,sideThickness*2.25])
			cylinder(r=screwHeadSize/2,h=30,$fn=20);

			//Countersink Hole Right
			translate([bodyLength-keyHoleOffset,0,sideThickness*2.25])
			cylinder(r=screwHeadSize/2,h=30,$fn=20);

			//Fingernail opener cutout
			translate([(bodyLength/2)-cutoutOffset,15,15])
			sphere(r=10);

			//Fingernail opener cutout
			translate([(bodyLength/2)+cutoutOffset,-15,15])
			sphere(r=10);
		}//End of if/else

		//Cut off the bottom of the main body
		translate([-1,-(bodyWidth/2)-1,-sideThickness-4])
		cube([bodyLength+2,bodyWidth+2,20]);

	}//End of union()

}

		//Body size check - The model should be no bigger than this!
		/*color("red")
		translate([0,-(bodyWidth/2),20])
		cube([bodyLength,bodyWidth,sideThickness]);*/

if(renderNutHoles==1)
{
	//Key ring clip
	translate([0,-7,0])
	rotate([0,0,45])
	difference()
	{
		hull()
			{
				translate([0,-10,sideThickness*2-2])
				cylinder(r=4, h=4.5, $fn=20);
				translate([10,-10,sideThickness*2-2])
				cylinder(r=4, h=4.5, $fn=20);
			}//End of hull

		translate([0,-10,sideThickness*2-2])
		cylinder(r=2, h=4.5, $fn=20);
	}//End of difference
}//End of if

```


[User]
I need a custom plug designed for adapting different sizes of filament spools to smaller diameter spool holder rods. I've seen a simple version that uses cylinders, but I want something more flexible and parametric.

Essentially, I need a plug that fits inside the spool's center hole and has a smaller hole going through it for the spool holder rod. The outer diameter and inner hole diameter need to be customizable, as do the height of the plug and a bit of a lip at the top.

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

*   `spool_diameter`: The inner diameter of the spool's center hole.
*   `holder_diameter`: The diameter of the spool holder rod.
*   `plug_height`: The overall height of the plug.
*    `lip_height`: The height of the lip at the top of the plug.
*   `lip_diameter_multiplier`:  A multiplier for the spool diameter used to determine the diameter of the lip (something like 1.4 or 1.5).
*   `text`: optional text to engrave on top of the lip, along with font and a `text_offset`.
*    `text_height`: how tall the engraved text should be

I'd like the plug to be composed of two cylinders, a wider one forming the body of the plug, and the lip, and a smaller one which forms a hole through the center. The lip should be on the top side of the plug. The text, if any, should be engraved on the top lip of the plug.

I need the design to be fully parametric so that I can easily adapt it to different spools. If possible, use the `writecylinder` function from the `Write.scad` library for the text engraving; I'm already familiar with that. I'd also like the design to be easily customizable in the OpenSCAD customizer.

[Assistant]
Excelfil_Spool_Plug.scad:
```
use <write/Write.scad>

label = "ExcelFil";
spool_diameter = 31.2;
holder_diameter = 4.5;
brand = str(label, " ", spool_diameter, "mm / ", holder_diameter, "mm");

$fn = 300*1;
font = "orbitron.dxf";

difference(){
	union(){
		cylinder(r=spool_diameter*1.4/2, h=3);
		cylinder(r=spool_diameter/2, h=11);
	}
	cylinder(r=holder_diameter/2*1.05, h=20);
	color("green")
		writecylinder(brand,[0,0,0],spool_diameter*1.45/2,3,face="top", t=1, h=spool_diameter/2*1.2-spool_diameter/2);
}
```


[User]
I'd like a coin holder designed to fit into a standard car cup holder. It should have several slots for different types of coins, and they should be spring-loaded so that the coins are easy to grab. I've got a design I like, but I'd like to start fresh and have you generate the OpenSCAD files from scratch, making it easy for me to customize.

Here are the key features I'm looking for:

*   **Cup Holder Fit:** The base of the coin holder needs to fit inside a cylindrical cup holder, and I'd like to be able to easily change the diameter and depth of this base. I think being able to define `cupHolderWidth` (or really, the diameter) and `cupHolderDepth` would be perfect.
*   **Number of Slots:** I need to be able to specify how many coin slots I want, say, `numSlots`.
*   **Coin Types:** Each slot should be able to hold a specific type of coin. I should be able to specify which coin each slot is designed for using variables like `coin1`, `coin2`, `coin3`, etc., where the assigned number corresponds to a predefined coin type. Let's use a system where 1 is a US dollar, 2 is a US half dollar, 3 is a US quarter, 4 is a US dime, 5 is a US nickel, 6 is a US penny, 7 is a euro cent, 8 is 2 euro cents, 9 is 5 euro cents, 10 is 10 euro cents, 11 is 20 euro cents, 12 is 50 euro cents, 13 is 1 euro, 14 is 2 euros, 15 is 5 Australian cents, 16 is 10 Australian cents, 17 is 20 Australian cents, 18 is 50 Australian cents, 19 is an Australian Dollar, 20 is an Australian $2, 21 is a Canadian $2, 22 is a Canadian $1, 23 is a Canadian 25c, 24 is a Canadian 10c, 25 is a Canadian 5c, and 26 is a Canadian 1c, and 0 indicates that the slot should be empty.
*   **Springs:** The coins need to be pushed up by springs, so each coin slot should have a cylindrical recess to hold a spring. I'd like to control the spring's outer diameter (`springOD`), inner diameter (`springID`), and min height (`springHeight`).
*   **Tweaks:** I should also be able to tweak some other things like a text scale (`scale`), how thick the base of the coin holder is (`cupHolderFloor`), the height of the lip that holds the coins in (`lip`), a general print clearance (`clearance`), and wall thickness (`wall`).
*  **Preview:** The ability to switch between rendering only the cup holder, the plungers, the cover, or the whole assembled design, using a `part` variable would be ideal.

I think that covers the main points, but it would also be useful to be able to see the parts exploded or with a cutaway view to get a sense of how it all goes together, so including some variable that lets me toggle those views would be great.

Also, it would be great if you could use the `write/Write.scad` library to write the names of the coins on the plungers.

Let me know if you have any questions before generating the code!

[Assistant]
CoinHolder.scad:
```
// coin holder http://www.thingiverse.com/thing:212164

// inspired by http://www.thingiverse.com/thing:9116

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

use <write/Write.scad>;

/* [General] */

// Part to display
part = 1; //[1:Preview, 2:Body, 3:Plungers, 4:Cover, 5:Plated]

// Chop into coin holder to see how it assembles. Turn this off before printing!
chop = 0; //[0:Whole, 1:Hole]

//Number of coin slots
numSlots = 5; // [1:8]
coin1 = 1; // [0:None, 1:US Dollar, 2:US half dollar, 3:US quarter, 4:US dime, 5:US nickle, 6:US penny, 7:euro cent, 8:2 euro cents, 9:5 euro cents, 10:10 euro cents, 11:20 euro cents, 12:50 euro cents, 13:1 euro, 14:2 euros, 15:5 Australian cents, 16:10 Australian cents, 17:20 Australian cents, 18:50 Australian cents, 19:Australian Dollar, 20:Australian $2, 21:CAN $2, 22:CAN $1, 23:CAN 25c, 24:CAN 10c, 25:CAN 5c, 26:CAN 1c]
coin2 = 2; // [0:None, 1:US Dollar, 2:US half dollar, 3:US quarter, 4:US dime, 5:US nickle, 6:US penny, 7:euro cent, 8:2 euro cents, 9:5 euro cents, 10:10 euro cents, 11:20 euro cents, 12:50 euro cents, 13:1 euro, 14:2 euros, 15:5 Australian cents, 16:10 Australian cents, 17:20 Australian cents, 18:50 Australian cents, 19:Australian Dollar, 20:Australian $2, 21:CAN $2, 22:CAN $1, 23:CAN 25c, 24:CAN 10c, 25:CAN 5c, 26:CAN 1c]
coin3 = 3; // [0:None, 1:US Dollar, 2:US half dollar, 3:US quarter, 4:US dime, 5:US nickle, 6:US penny, 7:euro cent, 8:2 euro cents, 9:5 euro cents, 10:10 euro cents, 11:20 euro cents, 12:50 euro cents, 13:1 euro, 14:2 euros, 15:5 Australian cents, 16:10 Australian cents, 17:20 Australian cents, 18:50 Australian cents, 19:Australian Dollar, 20:Australian $2, 21:CAN $2, 22:CAN $1, 23:CAN 25c, 24:CAN 10c, 25:CAN 5c, 26:CAN 1c]
coin4 = 4; // [0:None, 1:US Dollar, 2:US half dollar, 3:US quarter, 4:US dime, 5:US nickle, 6:US penny, 7:euro cent, 8:2 euro cents, 9:5 euro cents, 10:10 euro cents, 11:20 euro cents, 12:50 euro cents, 13:1 euro, 14:2 euros, 15:5 Australian cents, 16:10 Australian cents, 17:20 Australian cents, 18:50 Australian cents, 19:Australian Dollar, 20:Australian $2, 21:CAN $2, 22:CAN $1, 23:CAN 25c, 24:CAN 10c, 25:CAN 5c, 26:CAN 1c]
coin5 = 5; // [0:None, 1:US Dollar, 2:US half dollar, 3:US quarter, 4:US dime, 5:US nickle, 6:US penny, 7:euro cent, 8:2 euro cents, 9:5 euro cents, 10:10 euro cents, 11:20 euro cents, 12:50 euro cents, 13:1 euro, 14:2 euros, 15:5 Australian cents, 16:10 Australian cents, 17:20 Australian cents, 18:50 Australian cents, 19:Australian Dollar, 20:Australian $2, 21:CAN $2, 22:CAN $1, 23:CAN 25c, 24:CAN 10c, 25:CAN 5c, 26:CAN 1c]
coin6 = 6; // [0:None, 1:US Dollar, 2:US half dollar, 3:US quarter, 4:US dime, 5:US nickle, 6:US penny, 7:euro cent, 8:2 euro cents, 9:5 euro cents, 10:10 euro cents, 11:20 euro cents, 12:50 euro cents, 13:1 euro, 14:2 euros, 15:5 Australian cents, 16:10 Australian cents, 17:20 Australian cents, 18:50 Australian cents, 19:Australian Dollar, 20:Australian $2, 21:CAN $2, 22:CAN $1, 23:CAN 25c, 24:CAN 10c, 25:CAN 5c, 26:CAN 1c]
coin7 = 0; // [0:None, 1:US Dollar, 2:US half dollar, 3:US quarter, 4:US dime, 5:US nickle, 6:US penny, 7:euro cent, 8:2 euro cents, 9:5 euro cents, 10:10 euro cents, 11:20 euro cents, 12:50 euro cents, 13:1 euro, 14:2 euros, 15:5 Australian cents, 16:10 Australian cents, 17:20 Australian cents, 18:50 Australian cents, 19:Australian Dollar, 20:Australian $2, 21:CAN $2, 22:CAN $1, 23:CAN 25c, 24:CAN 10c, 25:CAN 5c, 26:CAN 1c]
coin8 = 0; // [0:None, 1:US Dollar, 2:US half dollar, 3:US quarter, 4:US dime, 5:US nickle, 6:US penny, 7:euro cent, 8:2 euro cents, 9:5 euro cents, 10:10 euro cents, 11:20 euro cents, 12:50 euro cents, 13:1 euro, 14:2 euros, 15:5 Australian cents, 16:10 Australian cents, 17:20 Australian cents, 18:50 Australian cents, 19:Australian Dollar, 20:Australian $2, 21:CAN $2, 22:CAN $1, 23:CAN 25c, 24:CAN 10c, 25:CAN 5c, 26:CAN 1c]

/* [Cup Holder] */

// width of your cup holder (mm)
cupHolderWidth = 75;
cupHolderR = cupHolderWidth/2;

// depth of your cup holder (mm)
cupHolderDepth = 50;

/* [Spring] */

// Spring outer diameter (mm)
springOD = 10;
springOR = springOD/2;

// Spring inner diameter (mm)
springID = 8;
springIR = springID/2;

echo ("spring ", springOD, springOR, springID, springIR);

// Spring min height (mm)
springHeight = 20;

/* [Tweaks] */

// Scale of text
scale = 2;

// cupHolderFloor (mm)
cupHolderFloor = 5;

// Top lip to hold coins in (mm)
lip = 4;

// Clearance, adjust to suit your printer
clearance = 0.4;

// Wall thickness (mm between coins and the outside of the holder)
wall = 2; // wall thickness

/* [Hidden] */

gap = 0.01; // to make surfaces not perfectly aligned
$fn=64;
coin=[coin1,coin2,coin3,coin4,coin5,coin6,coin7,coin8];
echo("coin ",coin);

// Compute angles for position of each coin slot proportional to coin sizes
/* not ready yet
totalCoinSizes = coinSize[coin[0]]+coinSize[coin[1]]+coinSize[coin[2]]+coinSize[coin[3]]
	+coinSize[coin[4]]+coinSize[coin[5]];
*/

// coin definitions, from WikiPedia and
// Some from http://www.air-tites.com/coin_size_chart.htm
// Some from http://www.usmint.gov/about_the_mint/?action=coin_specifications
// Australian from http://en.wikipedia.org/wiki/Coins_of_the_Australian_dollar (curseddager request)

coinName = ["None", "$1", "50", "25", "10", //US 1-6
	"5", "1",
	"1", "2", "5", "10", //Euro 7-14
	"20", "50", "E", "2E",
	"5", "10", "20", "50", "$1", "$2", //Australian 15-20
	"$2", "$1", "25", "10", "5", "1"]; // Canadian 21-26
coinSize = [0, 26.49, 30.6, 24.3, 17.9,//US 1-6
	21.21, 19,
	16.25, 18.75, 21.25, 19.75,//Euro 7-14
	22.25, 24.25, 23.25, 25.75,
	19.41, 23.6, 28.65, 32, 25, 20.5, //Australian 15-20
	28, 26.5, 23.9, 18, 21.2, 19.1]; // Canadian 21-26
coinHeight = [0, 2, 2.15, 1.75, 1.35, //US 1-6
	1.95, 1.55,
	1.67, 1.67, 1.67, 1.93,//Euro 7-14
	2.14, 2.38, 2.33, 2.20,
	1.3,2,2.5,2.5,3,3.2, //Australian 15-20
	1.6,1.9,1.6,1.3,1.8,1.5]; // Canadian 21-26

// computations

slotHeight = cupHolderDepth-wall;

// modules

module CoinSlot(coin) {
	union() {
		cylinder(r=coinSize[coin]/2+clearance, h=slotHeight+1);
		}
	}

module CoinSlotPlunger(c) {
	difference() {
		union() {
			// cylinder body
			cylinder(r=coinSize[c]/2, h=springHeight-coinHeight[c]);
			// top bevel
			translate([0,0,springHeight-coinHeight[c]-gap])
				cylinder(r1=coinSize[c]/2, r2=coinSize[c]/2-coinHeight[c],
				         h=coinHeight[c]);

			}
		translate([0,0,-1]) cylinder(r=springOR+clearance, h=springHeight-wall);
		translate([0,0,springHeight-.49]) scale([scale,scale,1]) write(coinName[c], center=true);
		}
	}

module coinHolder() {
	echo("start");
	difference() {
		cylinder(r=cupHolderR-clearance,h=cupHolderDepth);
		for (c=[0:numSlots-1]) {
			assign (a=c*360/numSlots) {
				echo("coin",c,"is ",coinName[coin[c]]);
				rotate([0,0,a])
					translate([cupHolderR-coinSize[coin[c]]/2-wall,0,cupHolderFloor]) {
					CoinSlot(coin[c]);
					translate([coinSize[coin[c]]/2,0,
					          cupHolderDepth-cupHolderFloor-coinHeight[coin[c]]+2*clearance])
						cube([coinSize[coin[c]]+2*clearance,
						     coinSize[coin[c]]+2*clearance,
						     1.5*coinHeight[coin[c]]+2*clearance], center=true);
					}
				}
			}
		}
	// add cones to keep the springs centered in the coin slots
	for (c=[0:numSlots-1]) {
		assign (a=c*360/numSlots) {
			echo("coin",c,"is ",coinName[coin[c]]," angle ",a);
			rotate([0,0,a]) translate([cupHolderR-coinSize[coin[c]]/2-wall,0,cupHolderFloor-gap]) {
						cylinder(r1=springIR-clearance,r2=springIR/2-clearance,h=springIR);
				// and show spring
				// difference() {
				// 	cylinder(r=springOR, h=springHeight);
				// 	translate([0,0,-1]) cylinder(r=springIR, h=springHeight+2);
				// 	}
				}
			}
		}
	// key on top
	cylinder(r=cupHolderR/7, h=cupHolderDepth+wall+clearance, $fn=3);
	cylinder(r=cupHolderR/7, h=cupHolderDepth+wall+clearance, $fn=4);
	}

// circle of plungers
module coinPlungers(extra) {
	for (c=[0:numSlots-1]) {
		assign (a=c*360/numSlots) {
			echo("coin",c,"is ",coinName[coin[c]]," angle ",a);
			rotate([0,0,a])
				translate([cupHolderR-coinSize[coin[c]]/2-wall+extra,0,cupHolderDepth-springHeight-cupHolderFloor-2*clearance]) {
					CoinSlotPlunger(coin[c]);
					}
			}
	 	}
	 }

module cover() {
	difference() {
		cylinder(r=cupHolderR, h=wall);

		for (c=[0:numSlots-1]) {
			assign (a=c*360/numSlots) {
				rotate([0,0,a])
					translate([cupHolderR-coinSize[coin[c]]/2-wall-lip,0,-1]) {
					cylinder(r=coinSize[coin[c]]/2-lip+clearance, h=wall+2);
					translate([coinSize[coin[c]]/2+lip,0,
					          (2*coinHeight[coin[c]]+wall+2*clearance)/2])
						cube([coinSize[coin[c]]+2*lip+2*clearance,
						     coinSize[coin[c]]-2*lip+2*clearance,
						     2*coinHeight[coin[c]]+wall+2*clearance], center=true);
					}
				}
			}
		translate([0,0,-1]) cylinder(r=cupHolderR/7+clearance, h=wall+2, $fn=3);
		translate([0,0,-1]) cylinder(r=cupHolderR/7+clearance, h=wall+2, $fn=4);
		}
	}

module assembled() {
	color("blue") coinHolder();
	color("grey") translate([0,0,cupHolderFloor]) coinPlungers(0);
	color("green") translate([0,0,cupHolderDepth+clearance+gap]) cover();
	}

module plated() {
	coinHolder();
	translate([cupHolderWidth+5,0,0]) rotate([180,0,0]) translate([0,0,-cupHolderDepth+cupHolderFloor+clearance*2]) coinPlungers(wall);
	translate([-cupHolderWidth-5,0,0]) cover();
	}

difference() {
	if (part==1) assembled();
	if (part==2) coinHolder();
	if (part==3) rotate([180,0,0]) translate([0,0,-cupHolderDepth+cupHolderFloor+clearance*2]) coinPlungers(wall);
	if (part==4) cover();
	if (part==5) plated();
	if (chop) rotate([0,0,-90]) translate([-cupHolderWidth-wall,0,-1]) cube([2*(cupHolderWidth+wall),cupHolderWidth+wall,cupHolderDepth+wall]);
	}
```


[User]
Okay, I have this design for a small, pocketable dice tower with a cover, but I'm pretty sure the cover is too tight to actually work. I'd like you to help me make a version that has a cover that slides on and off smoothly.

Here's a breakdown of what I'm looking for:

**General Dice Tower:**

*   The tower should be roughly rectangular, but dimensions should be parametric. I'd like to specify overall width, depth, and height. Let's start with a default width of 25mm, depth of 25mm, and height of 90mm.
*   The walls should have a specified thickness, also parametric. The default should be 1mm.
*   The tower should be hollow, with an opening at the bottom for dice to exit. I'd like this opening to be a ramped exit, so the dice roll out and don't just drop. The ramp angle should be a parameter, default to 45 degrees. The width of the opening should also be parametric, maybe as a fraction or percentage of the tower's width with a default of, say, 0.8.
*   I also want the tower to have a few rails (cylinder shapes) on the outside to guide the cover.

**Cover:**

*   The cover should be rectangular and fit over the tower. It should slide on and off along the rails.
*   The cover should have an overlap so that it slides over the outside of the tower, not an inset fit.
*   The fit between the cover and tower should be loose enough to slide without friction. Perhaps we should have a parameter to specify the clearance around the edges of the tower. We'll need to add a thickness to the outside dimensions of the cover, and also create some hollow space inside for the cover to slide over the outside of the tower.
*   The cover should have matching rails inside it to slide along the rails of the tower.

**Parameters**
I would like the following parameters to be set as configurable and easily modified at the top of the scad files:
* `width`: Overall width of the tower. Default 25mm.
* `depth`: Overall depth of the tower. Default 25mm.
* `height`: Overall height of the tower. Default 90mm.
* `wall_depth`: Wall thickness of the tower. Default 1mm.
* `ramp_angle`: Angle of the exit ramp. Default 45 degrees.
* `ramp_width_percent`: percentage of width that the opening should be. Default to 0.8
* `cover_clearance`: Clearance between the tower and cover. Default 0.5mm.

I am not trying to match the previous design exactly, so feel free to make any necessary adjustments to the design.

I'd prefer to have the tower and cover in separate files and I'm using OpenSCAD, so could you provide a parametric design using just the basic OpenSCAD library and nothing else please? I want to be able to easily adjust all the dimensions and parameters.

[Assistant]
DiceTowerWithCover.scad:
```
width=25;
depth=25;
height=90;
wall_depth=1;

translate([-width*1.5,-depth/2,0]){
 union(){
  difference(){
   //Build the general tube
   difference() {
    cube([width,depth,height]);
    translate([wall_depth, wall_depth,wall_depth]){
     cube([width-2*wall_depth, depth-2*wall_depth, height]);
    }
   }

   //The opening at the bottom:
   translate([width/2,-1,width-1]){
    rotate([-90,0,0]){
     union() {
      cylinder(h=wall_depth+2, r=width/2-wall_depth);
      translate([-1*(width/2-wall_depth),0,0]){
       cube([width-wall_depth*2, width-wall_depth*2, wall_depth+2]);
      }
     }
    }
   }
  }

  //Output Ramp:
  translate([0,1,0]){
   rotate([45,0,0]){
    color("blue") cube([width, floor(sqrt((depth*depth)*2))-1.5, 1]);
   }
  }

 //Cover rails
  translate([0,width-wall_depth*2,depth-wall_depth]){
   cylinder(h=height-depth+wall_depth, r=wall_depth/2,$fn=10);
  }
  translate([width,width-wall_depth*2,depth-wall_depth]){
   cylinder(h=height-depth+wall_depth, r=wall_depth/2,$fn=10);
  }

  translate([0,width,wall_depth*3]){
   rotate([90,0,0]){
    cylinder(h=wall_depth*3, r=wall_depth/2, $fn=10);
   }
  }
  translate([width,width,wall_depth*3]){
   rotate([90,0,0]){
    cylinder(h=wall_depth*3, r=wall_depth/2, $fn=10);
   }
  }
 }
}
//cover
translate([width*1.5,-1*wall_depth-depth/2,height+wall_depth*2]){
 color("red")
 rotate([0,180,0])
 difference(){
  translate([-2*wall_depth,wall_depth,0]){
   cube([width+wall_depth*4,depth+wall_depth*2,height+wall_depth*2]);
  }
  translate([0,0,-1]){
   cube([width,depth+wall_depth,height+1]);
  }

  //cover Slides
  translate([0,wall_depth*3,0]){
   cylinder(h=height, r=wall_depth/2,$fn=10);
  }
  translate([width,wall_depth*3,0]){
   cylinder(h=height, r=wall_depth/2,$fn=10);
  }

  translate([0,wall_depth*4,wall_depth*3]){
   rotate([90,0,0]){
    cylinder(h=wall_depth*4, r=wall_depth/2, $fn=10);
   }
  }
  translate([width,wall_depth*4,wall_depth*3]){
   rotate([90,0,0]){
    cylinder(h=wall_depth*4, r=wall_depth/2, $fn=10);
   }
  }
 }
}
```


[User]
I'm looking to design a modular antenna mount for my Turnigy 9X radio transmitter, specifically for use with an OrangeLRS module and a large antenna like the Nagoya 771. I want it to be composed of three parts: a front piece, a middle piece, and a back piece, which will sandwich together around the radio's handle.

The design needs to be parametric so I can adjust it for different antenna sizes. I want to define these parameters:

*   `diameter`: The diameter of the antenna base where it will sit in the mount.
*   `thickness1`: The thickness of the front and back pieces of the mount.
*   `thickness`: The thickness of the middle piece of the mount.

Each piece will have these general characteristics:

**Front and Back Pieces:**

*   They will be roughly rectangular, say 40mm x 40mm, with the thickness defined by `thickness1`.
*   They will have a circular cutout in the center to accommodate the base of the antenna. The cutout in the *front* piece should be slightly offset to allow for a firm grip on the antenna when screwed together. The *back* piece will have a cutout for the mounting connector to the Turnigy 9x, again with a small offset.
*   They'll each need four M5 screw holes arranged symmetrically around the center. The location of these holes should be automatically calculated to prevent them from overlapping with the central cutout, taking the antenna `diameter` into account.

**Middle Piece:**

*   This piece will also be roughly 40mm x 40mm, with a thickness defined by `thickness`.
*   It will have a central cutout for the antenna base, similar to the front and back pieces.
*   It will also have a cylindrical cutout for the Turnigy 9X connector mounting, but it should be perpendicular to the antenna cutout.
*   And like the other two pieces, four M5 screw holes should be arranged symmetrically around the center, again based on the antenna `diameter`.

I'd like the OpenSCAD code to use the `difference()` function to create the cutouts, and I'm hoping you can handle the translation and rotation for the various shapes. It's critical that the M5 screw holes are positioned relative to the antenna diameter to avoid any overlap. I'd like to use a `$fn` parameter of 100 for the cylinders to make them nice and smooth. Could you generate the OpenSCAD files for this design, please? I do not have any special libraries I need you to use, just vanilla OpenSCAD.

[Assistant]
Back_and_Middle_and_Front.scad:
```
//--Parameters
//--Diameter of the antenna base
diameter = 15;//[10:50]
//--Thickness of the front and back piece
thickness1 = 10;//[10:50]
//--Thickness of the middle piece
thickness = 17;//[10:50]
translate([50,25,-(thickness/2 - thickness1/2)])
rotate([0,0,0])
difference(){
  cube([40,40,thickness1],center=true);
//--We make the moulding where antenna fits
//--Note the way we translate. The antenna holder must be placed in this piece with an offset for allow a strong attachment when we'll screw the 3 pieces.
  translate([0,0,(thickness1/2)+(diameter/(diameter-7))])
  rotate([90,0,0])
  cylinder(r=diameter/2, h=50,$fn=100,center=true);
//--We make the M5 holes
//--Note that the holes are automatically positioned depending of the diameter of your antenna for ensuring a good adjustment and preventing overlap
  translate([(20-(diameter/2))/2+(diameter/2),(20-(diameter/2))/2+(diameter/2),0])
  cylinder(r=2.5, h=40,$fn=100,center=true);
  translate([-((20-(diameter/2))/2+(diameter/2)),-((20-(diameter/2))/2+(diameter/2)),0])
  cylinder(r=2.5, h=40,$fn=100,center=true);
  translate([((20-(diameter/2))/2+(diameter/2)),-((20-(diameter/2))/2+(diameter/2)),0])
  cylinder(r=2.5, h=40,$fn=100,center=true);
  translate([-((20-(diameter/2))/2+(diameter/2)),((20-(diameter/2))/2+(diameter/2)),0])
  cylinder(r=2.5, h=40,$fn=100,center=true);
}

difference(){
  cube([40,40,thickness],center=true);
//--We make the moulding where antenna fits
  translate([0,0,thickness/2])
  rotate([90,0,0])
  cylinder(r=diameter/2, h=50,$fn=100,center=true);
//--We make the moulding where it is attached to the Turnigy 9x.
  rotate([0,90,0])
  translate([thickness/2,0,0])
  cylinder(r=2, h=50,$fn=100,center=true);
//--We make the M5 holes
//--Note that the holes are automatically positioned depending of the diameter of your antenna for ensuring a good adjustment and preventing overlap
  translate([(20-(diameter/2))/2+(diameter/2),(20-(diameter/2))/2+(diameter/2),0])
  cylinder(r=2.5, h=40,$fn=100,center=true);
  translate([-((20-(diameter/2))/2+(diameter/2)),-((20-(diameter/2))/2+(diameter/2)),0])
  cylinder(r=2.5, h=40,$fn=100,center=true);
  translate([((20-(diameter/2))/2+(diameter/2)),-((20-(diameter/2))/2+(diameter/2)),0])
  cylinder(r=2.5, h=40,$fn=100,center=true);
  translate([-((20-(diameter/2))/2+(diameter/2)),((20-(diameter/2))/2+(diameter/2)),0])
  cylinder(r=2.5, h=40,$fn=100,center=true);
}

translate([0,50,-(thickness/2 - thickness1/2)])
rotate([180,0,0])
translate([])
difference(){
  cube([40,40,thickness1],center=true);
//--We make the moulding where it is attached to the Turnigy 9x.
  rotate([0,90,0])
//--Note the way we translate. The turnigy 9x holder must be placed in this piece with an offset for allow a strong attachment when we'll screw the 3 pieces.
  translate([(thickness1/2)+0.3,0,0])
  cylinder(r=2, h=50,$fn=100,center=true);
//--We make the M5 holes
//--Note that the holes are automatically positioned depending of the diameter of your antenna for ensuring a good adjustment and preventing overlap
  translate([(20-(diameter/2))/2+(diameter/2),(20-(diameter/2))/2+(diameter/2),0])
  cylinder(r=2.5, h=40,$fn=100,center=true);
  translate([-((20-(diameter/2))/2+(diameter/2)),-((20-(diameter/2))/2+(diameter/2)),0])
  cylinder(r=2.5, h=40,$fn=100,center=true);
  translate([((20-(diameter/2))/2+(diameter/2)),-((20-(diameter/2))/2+(diameter/2)),0])
  cylinder(r=2.5, h=40,$fn=100,center=true);
  translate([-((20-(diameter/2))/2+(diameter/2)),((20-(diameter/2))/2+(diameter/2)),0])
  cylinder(r=2.5, h=40,$fn=100,center=true);
}
```


[User]
Hey, I'm looking to design a belt clip for various sizes of timing belts, specifically those with teeth. It should be parametric so I can easily adjust it for different belt widths, thicknesses, and tooth pitches.

Here's what I need:

The basic idea is a clip that grips the belt on both sides using its teeth. Think of it as two mirrored pieces that can be bolted together or zip-tied, sandwiching the belt securely. I'd like it to have a few specific features:

*   **Parametric Design:** The most important part is that the design is driven by parameters like:
    *   `teeth`: The number of teeth on each side of the clip that engage the belt.
    *   `belt_width`: The total width of the belt, including a little bit of clearance.
    *   `belt_thickness`: The thickness of the belt itself.
    *   `pitch`: The distance between the teeth on the belt.
    *   `shell`: The thickness of the main body of the clip, controlling the overall strength.
*   **Belt Engagement:** There needs to be enough space for the belt to enter and exit the clip, and the teeth should securely mate with the belt teeth.
*   **Mounting:** I'd like a hole for an M3 screw, along with a recessed hexagonal pocket to hold an M3 nut. This allows the clip to be tightened together when used as a clamp or mounted to a surface. Additionally, it would be nice if it was designed to be easily zip-tied if no screw is available. This can be accomplished with spaces that the zip ties can go through.
*   **No Slip:** I need the teeth to engage the belt tightly enough to prevent any slipping.
*   **Lightweight:** The overall design should be relatively lightweight and efficient in material usage.

I'm hoping the design can be done in OpenSCAD and I'm not looking to include anything that has already been done. Can you get me set up with a few OpenSCAD files (or one big one if it makes sense) to create this clip? I am aware that there are some MCAD and BOSL2 modules that would make it easier to make an M3 fastener, but I'm not going to include that and would prefer if you wrote the code for that yourself as well.

[Assistant]
tough_belt_clip.scad:
```
// Tough Belt Clip
// Design by Marius Gheorghescu, December 2013

// how many teeth on each side
teeth = 5;

// width of the belt in mm incl clearance (use 6.25 for typical GT2 belt)
belt_width = 6.5;

// thickness of the belt in mm (use 1.5 for GT2 belt)
belt_thickness = 1.5;

// belt pitch in mm (use 2.0 for GT2 belt)
pitch = 2.0;

// this controls the strength of the bracket
shell = 1.5;

/* [Hidden] */
cutout_width = 6 + belt_thickness + shell;
len = 2*teeth*pitch + cutout_width;
round_corner_epsilon = 1;
epsilon = 0.01;

module belt()
{
	// reinforcement
	//cube([len, 2, h], center=true);

	for(i=[pitch/4:pitch:len]) {
		translate([i-len/2, 1.25, 0])
			cube([pitch - round_corner_epsilon, belt_thickness + round_corner_epsilon, belt_width], center=true);

	}

}

module clip() {
difference()  {

	union() {
		// general shape of the clip
		linear_extrude(belt_width + 2*shell, center=true) {
			polygon(points=[
				[len/2,0],
				[3,-2.5],
				[-3,-2.5],
				[-len/2,0],
				[-len/2, shell + belt_thickness],
				[len/2, shell + belt_thickness]
			]);
		}

	}

	// left belt turn
	rotate([0,0,-45])
	translate([-3.2/2 - shell - belt_thickness/2,0,0])
		cube([belt_thickness, 20 + 2*shell, belt_width], center=true);

	// right belt turn
	rotate([0,0,45])
//+ belt_thicknes/2 + shell
	translate([3.2/2 + shell + belt_thickness/2,0,0])
		cube([belt_thickness, 20 + 2*shell, belt_width], center=true);

	// cutouts
	translate([len/2 - teeth*pitch, shell + belt_thickness/2, 0])
		cube([pitch + epsilon, belt_thickness + epsilon, belt_width], center=true);

	translate([-len/2 + teeth*pitch, shell + belt_thickness/2, 0])
		cube([pitch + epsilon, belt_thickness + epsilon, belt_width], center=true);

	// m3 hole
	rotate([90,0,0])
		cylinder(r=1.66, h=10 + 2*shell, center=true);

	// hex nut
	translate([0, -3.8, 0])
	rotate([90,90,0])
		cylinder(r=3.35, h=4, center=true, $fn=6);

	// belt teeth
	for(i=[1:1:teeth]) {

		// left side
		color([1,0, 0])
		translate([len/2 + pitch/4 - i*pitch, shell + belt_thickness/2, 0])
			cube([pitch/2, belt_thickness + epsilon, belt_width], center=true);

		// right side
		color([1,0, 0])
		translate([-len/2 - pitch/4 + i*pitch, shell + belt_thickness/2, 0])
			cube([pitch/2, belt_thickness + epsilon, belt_width], center=true);
	}

}

}

module clip_set()
{
	for(i=[0:10:50]) {
		translate([0,i,0])
			clip();
	}
}

//clip_set();
clip();

```


[User]
Okay, I'd like a parametric OpenSCAD design for an Altoids tin storage rack. I want to be able to adjust a bunch of things, so I'm hoping you can handle that.

First, the design needs to support a few different styles. I'd like the user to be able to choose between "full", "fullwide", "singleleft", "singleright", and "middle". "full" and "fullwide" should create two identical racks side by side with spacing between them, and the other three should create a single rack. The spacing between the two "full" racks should be based on the standard width of an Altoids tin plus a bit of play, and "fullwide" should use the length of an Altoids tin plus some play.  "singleleft" would be identical to "singleright", except it wouldn't be mirrored on the x-axis. The 'middle' type should create a single rack where the central side-wall sits on the x-axis, rather than the edge of the rack.

I also need to be able to specify how many tins the rack will hold - a variable for "tins". The rack should have cutouts on the sides to make it easier to grab the tins, controlled by a boolean "cutouts".  I want screw holes, controlled by a boolean "screw_holes," and a boolean, "closed_ends", to make the front and back shelves solid. I need to be able to choose whether there is a bottom shelf on the rack with a "with_bottom_shelf" boolean; this would be helpful for stacking multiple racks. The side depth and width, "depth" and "width" should be adjustable with the unit being millimeters.  I will need adjustable "wall_thickness" and "bottom_thickness" parameters, and also "width_play" and "height_play", specifying the extra room for the tins so they're not a super tight fit.

I think that covers all the options I want. Can you generate an OpenSCAD design for this? I don't need you to use any specific libraries for this.

[Assistant]
Parametric_altoids_storage.scad:
```
//------------------------------------------------------------
// Parametric altoids storage racks
//
// http://www.thingiverse.com/wardwouts
//
//
//------------------------------------------------------------

// What type of storage do you want?
style = "fullwide"; // [full,fullwide, singleleft, singleright, middle]

// Number of tins to store
tins = 5;

// in the sides for easier tin grabbing?
cutouts = "yes"; // [yes,no]

screw_holes = "yes"; // [yes,no]

closed_ends = "no"; // [yes,no]

// For stacking multiple racks you may not want a bottom shelf
with_bottom_shelf = "yes"; // [yes,no]

// Side depth (how deep is a shelf in mm)
depth = 40;

// Side width (how wide is a shelf in mm)
width = 20;

wall_thickness = 2;
bottom_thickness = 1;

// Amount of play a tin should have at its sides
width_play = 0.5;

// Amount of play a tin should have between shelves
height_play = 0.5;

//////////////////////////////////////////////////////////////////
// Some tin measurements; these shouldn't need editing
// Thickness of an altoids tin as measured
tin_thickness = 21.5;
// as measured
tin_width = 62;
// as measured
tin_length = 97.5;

//////////////////////////////////////////////////////////////////
// Code starts here

wtn = wall_thickness;
btn = bottom_thickness;

// the sace betwee 2 shelves
spacing = tin_thickness + height_play;

tin_tot_width = tin_width + width_play;
tin_tot_length = tin_length + width_play;

length=tins*spacing + tins*wtn;

module base() {
	// Draw the base wall thickness offset from origin
	translate([0,wtn,0]){
		if ( screw_holes == "yes"){
			difference(){
				cube([length,width,btn]);
				union() {
					translate([wtn+spacing/2,width/2,0]){
						screw_hole();
					}
					translate([length - spacing/2,width/2,0]){
						screw_hole();
					}
				}
			}
		} else {
			cube([length,width,btn]);
		}
	}
}

module side() {
	if (cutouts == "yes") {
		difference(){
			cube([length,wtn,depth+btn]);
			union(){
				for (i = [0 : tins - 1]){
					translate([wtn + (spacing/2) + (spacing+wtn)*i, -wtn, depth+btn]){
						rotate([270,0,0]){
							// if I aim for an exact cutout, some material remains,
							// so cutout 3*wtn
							cylinder(h=wtn*3,r=spacing/2);
						}
					}
				}
			}
		}
	} else {
		cube([length,wtn,depth+btn]);
	}
}

module shelf() {
	// Draws a single shelf with one rounded corner
	// To draw this it draws 2 rectangles and one cilinder like:
	// +--+-
	// |  |	 \
	// |  |+-+
	// +--++-+
	// As the circle may get to big it cuts everything off at the surrouning rectangle
	// Draw the base wall thickness and base thickness offset from origin
	translate([0,wtn,btn]){
		intersection() {
			cube([wtn,width,depth]);
			union() {
				translate([0,width/2,depth-width/2]){
					rotate([0,90,0]){
						cylinder(h=wtn, r=width/2);
					}
				}
				cube([wtn,width/2,depth]);
				translate([0,width/2,0]){
					cube([wtn,width/2,depth-width/2]);
				}
			}
		}
	}
}

module shelves() {
	// Draw the same number of shelves as there are tins
	// If with_bottom_shelf was chosen, draw one more
	for (i = [0 : tins - 1]){
		translate([(spacing+wtn)*i,0,0]){
			shelf();
		}
	}
	if (with_bottom_shelf == "yes"){
		translate([length,0,0]){
			shelf();
			// the end tray needs a bit more side and base too
			cube([wtn,wtn,btn+depth]);
			cube([wtn,width+wtn,btn]);
		}
	}
}

module spacer() {
	// If a full rack was chosen we need material to hold the two sides together
	// this module draws that bit
	if (style == "full" || style == "fullwide") {
		if (style == "full") {
			translate([0,width+wtn,0]){
				if (with_bottom_shelf == "yes"){
					cube([length + wtn, tin_tot_width/2 - width, btn]);
				} else {
					cube([length, tin_tot_width/2 - width, btn]);
				}
			}
		} else {
			translate([0,width+wtn,0]){
				if (with_bottom_shelf == "yes"){
					cube([length + wtn, tin_tot_length/2 - width, btn]);
				} else {
					cube([length, tin_tot_length/2 - width, btn]);
				}
			}
		}
	}
}

module ends() {
	// It can be nice to have closed top and bottom shelves
	// If closed_ends have been chosen, fill up the ends
	if (closed_ends == "yes"){
		if (style == "full") {
			cube([wtn, tin_tot_width/2+wtn, depth+btn]);
		} else if (style == "fullwide") {
			cube([wtn, tin_tot_length/2+wtn, depth+btn]);
		}
		if (with_bottom_shelf == "yes"){
			translate([length,0,0]){
				if (style == "full") {
					cube([wtn, tin_tot_width/2+wtn, depth+btn]);
				} else if (style == "fullwide") {
					cube([wtn, tin_tot_length/2+wtn, depth+btn]);
				}
			}
		}
	}
}

module screw_hole() {
	// screw head that I measured maxes at 7mm
	// screw thread is 3.5 mm
	head = 7;
	thread = 3.5 + 0.5;

	translate([0,0,-20]){
		cylinder(h=30, r=thread/2, $fn=20);
	}
	translate([0,0,btn-(thread/2)]){
		cylinder(h=head-(thread/2), r1=thread/2, r2=head);
	}
}

module rack() {
	base();
	side();
	shelves();
	spacer();
	ends();
}

if (style == "singleright"){
	mirror([0,1,0]){
		rack();
	}
} else {
	rack();
}

if (style == "full") {
	translate([0, tin_tot_width+2*wtn,0]){
		mirror([0,1,0]){
			rack();
		}
	}
} else if (style == "fullwide") {
	translate([0, tin_tot_length+2*wtn,0]){
		mirror([0,1,0]){
			rack();
		}
	}
} else if (style == "middle") {
	translate([0, wtn, 0]){
		mirror([0,1,0]){
			rack();
		}
	}
}

```


[User]
I'd like a parametric OpenSCAD design for an LED candle holder. It should be a frustum (a cone with the top cut off) shape.

Here's the specific stuff I need to be able to control:

*   **Number of sides:** The number of sides of the base and top of the frustum. This will control the shape going from a triangle to a circle.
*   **Top Hole Diameter:** A cylindrical hole at the top for the LED candle.
*   **Bottom Hole Diameter:** A cylindrical hole for the LED candle at the bottom (it can be slightly smaller than the top hole diameter if that helps with fitting).
*   **Hole Depth:** The depth of the candle hole from the top surface down into the frustum.
*   **Top Diameter:** The diameter of the top of the frustum.
*   **Bottom Diameter:** The diameter of the base of the frustum.
*   **Height:** The total height of the frustum.
*   **Rings:** An option to add decorative rings around the frustum. There should be either 0 rings, or 3 equally spaced rings on the outside.

Can you make a single SCAD file that includes all of these parameters? The default values for the parameters should be:

*   `halterecken = 6;`
*   `durchmesserkerzeoben = 18.35;`
*   `durchmesserkerzeunten = 18.25;`
*   `lochkerze = 5;`
*   `durchmesserhalteroben = 28;`
*   `durchmesserhalterunten = 50;`
*   `halterhoehe = 30;`
*   `halterrige = 1;`

I'm not really worried about libraries, but if you use any, please make sure to tell me which ones you're using.

[Assistant]
LED-Kerzen-Staender-param.scad:
```
//$fn=6;
//$fn=9;
//$fn=12;
//$fn=24;
//$fn=100;

// Ecken vom Halter - Corners of the holder
halterecken=6; // [3:100]

// Durchmesser des Lochs für die Kerze oben - Diameter of the hole for the candle above
durchmesserkerzeoben=18.35;

// Durchmesser des Lochs für die Kerze unten - Diameter of the hole for the candle below
durchmesserkerzeunten=18.25;

// Tiefe des Lochs für die Kerze - Depth of the hole for the candle
lochkerze=5;

// Durchmesser vom Halter oben - Diameter of the holder above
durchmesserhalteroben=28;

// Durchmesser vom Halter unten - Diameter of the holder below
durchmesserhalterunten=50;

// Höhe vom Halter - Height from holder
halterhoehe=30;

// Ringe - rings ?
halterrige=1; // [1:ja - yes,0:nein - no]

translate([0,0,0]) staender(durchmesserhalterunten,durchmesserhalteroben,halterhoehe,halterrige,halterecken);

/*
translate([0,0,0]) staender(50,25,50,0,16);

translate([0,28,0]) staender(15,25,30,0,32);
translate([28,0,0]) staender(15,25,30,0,32);
translate([-28,0,0]) staender(15,25,30,0,32);
translate([0,-28,0]) staender(15,25,30,0,32);

translate([0,50,0]) staender(45,40,10,1,16);
translate([50,0,0]) staender(45,40,10,1,16);
translate([-50,0,0]) staender(45,40,10,1,16);
translate([0,-50,0]) staender(45,40,10,1,16);
*/
/*
FAV
translate([-50,14,0]) staender(35,25,30,0);
translate([-74,0,0]) staender(35,25,20,0);
translate([-50,-14,0]) staender(35,25,40,0);

translate([0,0,0]) staender(45,30);
*/

/*
translate([-50,14,0]) staender(35,25,30,0);
translate([-74,0,0]) staender(35,25,20,0);
translate([-50,-14,0]) staender(35,25,40,0);

translate([0,0,0]) staender(30);
translate([50,0,0]) staender(35);
translate([50,50,0]) staender(45,30);
translate([0,50,0]) staender(45,35);
translate([50,100,0]) staender(40,30,20,0);
translate([0,100,0]) staender(45,35,20,0);
*/

module staender(unten=30, oben=25, hoehe=20, ringe=1, $fn=6) {
translate([0,0,hoehe/2]) {
color("green") {
difference() {
union() {
cylinder(r1=unten/2,r2=oben/2,h=hoehe,center=true);

if(ringe==1) {
translate([0,0,hoehe*0.3]) cylinder(r1=(((unten-oben)*0.25)+oben)/2-1,r2=(((unten-oben)*0.25)+oben)/2+(unten-oben)/6,h=hoehe/4,center=true);

translate([0,0,0]) cylinder(r1=(((unten-oben)*0.5)+oben)/2-1,r2=(((unten-oben)*0.5)+oben)/2+(unten-oben)/6,h=hoehe/4,center=true);

translate([0,0,-hoehe*0.3]) cylinder(r1=(((unten-oben)*0.75)+oben)/2-1,r2=(((unten-oben)*0.75)+oben)/2+(unten-oben)/6,h=hoehe/4,center=true);
}
}
translate([0,0,hoehe/2]) cylinder(r1=durchmesserkerzeunten/2,r2=durchmesserkerzeoben/2,h=lochkerze*2,center=true,$fn=100);
translate([0,0,-lochkerze-1.5]) cylinder(r1=unten/2-2,r2=oben/2-2,h=hoehe,center=true);
}
}
}
}
```


[User]
I'd like to create some customizable LED candle holders, and I'm thinking a modular design would be really flexible.  I'd like to be able to create individual holders, and also rings of holders, with a connector ring.

Here's what I'm envisioning for the basic candle holder: It's essentially a truncated cone with a hole for the LED candle, and it would be great to have a few decorative rings.  I need to be able to control:

*   The number of sides for the base (basically, how many corners it has)
*   The diameter at the top and bottom of the cone
*   The height of the cone
*   The diameter and depth of the hole for the candle - it should be slightly tapered, wider at the top
*   Whether or not to display the decorative rings (I'm thinking maybe 3 rings evenly spaced)

Then, for the ring of candle holders, I'd like to control:

*   How many holders there are in the ring
*   The offset between the candle holders on the ring (spacing)
*   Whether to include the outer ring to connect all the holders
*   The diameter of that connector ring

I think that should cover everything. Thanks!

[Assistant]
LED-Kerzen-Staender-param.scad:
```
/* [Main Dimensions] */

// Ecken vom Halter - Corners of the holder
halterecken=12; // [3:100]

// Durchmesser des Lochs fuer die Kerze oben - Diameter of the hole for the candle above
durchmesserkerzeoben=18.35;

// Durchmesser des Lochs fuer die Kerze unten - Diameter of the hole for the candle below
durchmesserkerzeunten=18.25;

// Tiefe des Lochs fuer die Kerze - Depth of the hole for the candle
lochkerze=5;

// Durchmesser vom Halter oben - Diameter of the holder above
durchmesserhalteroben=28;

// Durchmesser vom Halter unten - Diameter of the holder below
durchmesserhalterunten=50;

// Hoehe vom Halter - Height from holder
halterhoehe=30;

// Ringe - rings ?
showringe=1; // [1:ja - yes,0:nein - no]

// Wieviele Halter im Ring - How many holder in the ring ?
halterrige=10; // [3:30]

// Abstand zwischen den Kerzenhaltern im Ring - Offset between Candleholders in the ring
offsethalterrige=20; // [-10:30]

// Grossen Ring zum verbinden - Big ring to connect ?
showbigring=1;

// Durchmesser vom grossen Ring - Diameter of of Big ring ?
durchmesserbigring=12;

/*
// customizer single
translate([0,0,0]) staender(durchmesserhalterunten,durchmesserhalteroben,halterhoehe,showringe,halterecken);
*/

// customizer ring
abstandvondermitte=(durchmesserhalterunten+offsethalterrige)*halterrige/2/PI;
for(i=[0:halterrige]) {
rotate([0,0,360/halterrige*i]) translate([0,abstandvondermitte,0]) staender(durchmesserhalterunten,durchmesserhalteroben,halterhoehe,showringe,halterecken);
}
if(showbigring==1) {
difference() {
rotate_extrude() translate([abstandvondermitte,0,0]) circle(r=durchmesserbigring, $fn=halterecken);
rotate_extrude() translate([abstandvondermitte,0,0]) circle(r=durchmesserbigring-2, $fn=halterecken);
translate([0,0,-(durchmesserbigring+2)]) rotate_extrude() translate([abstandvondermitte-(durchmesserbigring+2),0,0]) square ([(durchmesserbigring+2)*2,(durchmesserbigring+2)], $fn=halterecken);

}
}

/*
// 9er Set
translate([0,0,0]) staender(50,25,50,0,16);

translate([0,28,0]) staender(15,25,30,0,32);
translate([28,0,0]) staender(15,25,30,0,32);
translate([-28,0,0]) staender(15,25,30,0,32);
translate([0,-28,0]) staender(15,25,30,0,32);

translate([0,54,0]) staender(45,40,10,1,16);
translate([54,0,0]) staender(45,40,10,1,16);
translate([-54,0,0]) staender(45,40,10,1,16);
translate([0,-54,0]) staender(45,40,10,1,16);
*/

/*
// my FAVs
translate([-50,14,0]) staender(35,25,30,0);
translate([-74,0,0]) staender(35,25,20,0);
translate([-50,-14,0]) staender(35,25,40,0);

translate([0,0,0]) staender(45,30);
*/

/*
translate([-50,14,0]) staender(35,25,30,0);
translate([-74,0,0]) staender(35,25,20,0);
translate([-50,-14,0]) staender(35,25,40,0);

translate([0,0,0]) staender(30);
translate([50,0,0]) staender(35);
translate([50,50,0]) staender(45,30);
translate([0,50,0]) staender(45,35);
translate([50,100,0]) staender(40,30,20,0);
translate([0,100,0]) staender(45,35,20,0);
*/

module staender(unten=30, oben=25, hoehe=20, ringe=1, $fn=6) {
translate([0,0,hoehe/2]) {
color("green") {
difference() {
union() {
cylinder(r1=unten/2,r2=oben/2,h=hoehe,center=true);

if(ringe==1) {
translate([0,0,hoehe*0.3]) cylinder(r1=(((unten-oben)*0.25)+oben)/2-1,r2=(((unten-oben)*0.25)+oben)/2+(unten-oben)/6,h=hoehe/4,center=true);

translate([0,0,0]) cylinder(r1=(((unten-oben)*0.5)+oben)/2-1,r2=(((unten-oben)*0.5)+oben)/2+(unten-oben)/6,h=hoehe/4,center=true);

translate([0,0,-hoehe*0.3]) cylinder(r1=(((unten-oben)*0.75)+oben)/2-1,r2=(((unten-oben)*0.75)+oben)/2+(unten-oben)/6,h=hoehe/4,center=true);
}
}
translate([0,0,hoehe/2]) cylinder(r1=durchmesserkerzeunten/2,r2=durchmesserkerzeoben/2,h=lochkerze*2,center=true,$fn=100);
translate([0,0,-lochkerze-1.5]) cylinder(r1=unten/2-2,r2=oben/2-2,h=hoehe,center=true);
}
}
}
}

```


[User]
I'm looking to design some snap-fit pins and holes for 3D printing, and I'd like to create a parametric OpenSCAD library for them. I need two main modules: one for the pin (I'll call it `pinpeg`) and one for the hole (`pinhole`).

The `pinpeg` should have the following characteristics:

*   It's essentially two mirrored pins with a central slot cut out of each.
*   The pins should have a cylindrical shaft with a tapered end.
*   It needs small snap nubs on opposite sides of the shaft near the base, but they should be offset slightly to the top.
*   There should be a slight preload, that is, the pin should be slightly wider than the hole when at rest to create a tight fit.
*   There should also be a small clearance parameter, that will reduce the pin diameter to ensure that the pin will not fit so tightly that it will break.
*   I need a parameter for the pin shaft thickness - thinner pins will be more flexible.
*   I'd like the option for the pins to be slightly flattened at the base by an amount to make them print better.

The `pinhole` should have these features:

*   It should be a simple cylindrical hole with a tapered end to match the `pinpeg`.
*   It should have corresponding snap nubs to engage with the `pinpeg`.
*   It needs an option to make the hole fixed. This means adding an enclosing cube to ensure the hole is always the correct shape when using boolean operators.
*   I would like the option to include thin fins or ribs within the hole which greatly increase strength when printed vertically, as described in the description of my code.

Here are the parameters I envision for these modules:

**General:**

*   `diameter`: (Float) The diameter of the pin and hole shaft.
*   `length`: (Float) The length of the pin and hole.
*   `snap`: (Float) The height of the snap nubs.
*   `preload`: (Float) The amount the pin is initially wider than the hole.
*   `clearance`: (Float) The amount the pin is actually narrower than the hole when fully at rest.

**pinpeg specific:**

*   `thickness`: (Float) The thickness of the pin's walls.
*   `flat`: (Boolean, 0 or 1) Flattens the base of the pin to make it print better. Default:1

**pinhole specific:**

*   `fixed`: (Boolean, 0 or 1) Whether or not to include the enclosing cube. Default: 0 (False)
*    `fins`: (Boolean, 0 or 1) Whether or not to include the fins. Default: 1 (True)

I'd like the output to be in a single .scad file. Please make sure to use good parameter names and comments.

[Assistant]
pin2.scad:
```
// new pin connectors

object=0;//[0:Pinpeg,1:Pinhole]
//Pinpeg is twice this length
length=13;
//Of hole; pinpeg is smaller to fit
diameter=7;
//Only affects pinhole
hole_twist=0;//[0:free,1:fixed]
//Pulls the snaps together on the pinpeg to ensure a tight coupling
preload=0.1;
//Allows pins to fit easily into holes
clearance=0.3;
//Thicker makes the pinpeg stiffer
thickness=1.8;
//Height of snap nubs
snap=0.4;
//Put fins on pinhole to help with printing strength
fins=1;//[1:yes,0:no]

$fn=20;

if(object==0)pinpeg(r=diameter/2,l=length,d=2.5-preload,nub=snap,t=thickness,space=clearance);
if(object==1)pinhole(r=diameter/2,l=length,nub=snap,fixed=hole_twist,fins=fins);

//pin(flat=0);
//%pinhole(fixed=true);

//pinpeg();
//translate([10,0,0])difference(){
//	cylinder(r=5.5,h=14);
//	pinhole(fixed=true);
//}
//translate([-10,0,0])difference(){
//	cylinder(r=5.5,h=14);
//	pinhole(fixed=false);
//}

module pin(r=3.5,l=13,d=2.4,slot=10,nub=0.4,t=1.8,space=0.3,flat=1)
translate(flat*[0,0,r/sqrt(2)-space])rotate((1-flat)*[90,0,0])
difference(){
	rotate([-90,0,0])intersection(){
		union(){
			translate([0,0,-0.01])cylinder(r=r-space,h=l-r-0.98);
			translate([0,0,l-r-1])cylinder(r1=r-space,r2=0,h=r-space/2+1);
			translate([nub+space,0,d])nub(r-space,nub+space);
			translate([-nub-space,0,d])nub(r-space,nub+space);
		}
		cube([3*r,r*sqrt(2)-2*space,2*l+3*r],center=true);
	}
	translate([0,d,0])cube([2*(r-t-space),slot,2*r],center=true);
	translate([0,d-slot/2,0])cylinder(r=r-t-space,h=2*r,center=true,$fn=12);
	translate([0,d+slot/2,0])cylinder(r=r-t-space,h=2*r,center=true,$fn=12);
}

module nub(r,nub)
union(){
	translate([0,0,-nub-0.5])cylinder(r1=r-nub,r2=r,h=nub);
	cylinder(r=r,h=1.02,center=true);
	translate([0,0,0.5])cylinder(r1=r,r2=r-nub,h=5);
}

module pinhole(r=3.5,l=13,d=2.5,nub=0.4,fixed=false,fins=true)
intersection(){
	union(){
		translate([0,0,-0.1])cylinder(r=r,h=l-r+0.1);
		translate([0,0,l-r-0.01])cylinder(r1=r,r2=0,h=r);
		translate([0,0,d])nub(r+nub,nub);
		if(fins)translate([0,0,l-r]){
			cube([2*r,0.01,2*r],center=true);
			cube([0.01,2*r,2*r],center=true);
		}
	}
	if(fixed)cube([3*r,r*sqrt(2),2*l+3*r],center=true);
}

module pinpeg(r=3.5,l=13,d=2.4,nub=0.4,t=1.8,space=0.3)
union(){
	pin(r=r,l=l,d=d,nub=nub,t=t,space=space,flat=1);
	mirror([0,1,0])pin(r=r,l=l,d=d,nub=nub,t=t,space=space,flat=1);
}
```


[User]
I want to design a parametric die with rounded edges and customizable "eyes" (the dots).  I'd like to be able to control:

1.  **Overall Size:**  The die should be scalable in all three dimensions using a single parameter.
2.  **Edge Roundness:** I want to be able to adjust how round the edges are. A value of 0 should result in sharp edges, and larger values should result in increasingly rounded edges.
3.  **Eye Size:**  I want a parameter for the diameter of the eye spheres.
4.  **Eye Indentation Depth:**  I'd like to control how far the eye spheres are indented into the die face, with a value of 0 meaning the eyes are flush with the surface.
5.  **Eye Spacing/Positioning**:  I'd like the eye positions to be automatically calculated based on the die size to be correctly positioned for a standard six-sided die.

Could you generate an OpenSCAD file that allows for these parameters? I don't need any specific libraries.

[Assistant]
dice_rounded_smuk.scad:
```
$fn=50;
radiuseye=1.8;

scale(2,2,2) {
difference() {
	minkowski() {
		translate([3,3,3], center=true) sphere(r=3);
		translate([0,0,0]) cube([14,14,14]);
	}

	translate([10,  0, 10]) sphere(r=radiuseye); // 1

	translate([20,  5,  5]) sphere(r=radiuseye); // 2
	translate([20, 15, 15]) sphere(r=radiuseye); // 2

	translate([ 5,  5, 20]) sphere(r=radiuseye); // 3
	translate([10, 10, 20]) sphere(r=radiuseye); // 3
	translate([15, 15, 20]) sphere(r=radiuseye); // 3

	translate([ 5,  5,  0]) sphere(r=radiuseye); // 4
	translate([15,  5,  0]) sphere(r=radiuseye); // 4
	translate([ 5, 15,  0]) sphere(r=radiuseye); // 4
	translate([15, 15,  0]) sphere(r=radiuseye); // 4

	translate([ 0,  5,  5]) sphere(r=radiuseye); // 5
	translate([ 0, 15,  5]) sphere(r=radiuseye); // 5
	translate([ 0,  5, 15]) sphere(r=radiuseye); // 5
	translate([ 0, 15, 15]) sphere(r=radiuseye); // 5
	translate([ 0, 10, 10]) sphere(r=radiuseye); // 5

	translate([ 5, 20,  5]) sphere(r=radiuseye); // 6
	translate([15, 20,  5]) sphere(r=radiuseye); // 6
	translate([ 5, 20, 10]) sphere(r=radiuseye); // 6
	translate([15, 20, 10]) sphere(r=radiuseye); // 6
	translate([ 5, 20, 15]) sphere(r=radiuseye); // 6
	translate([15, 20, 15]) sphere(r=radiuseye); // 6
}
}
```
dice_rounded_smuk.scad:
```
$fn=50;

// Dice-Eyes Radius
radiuseye=1.8;

scale(2,2,2) {
difference() {
	minkowski() {
		translate([3,3,3], center=true) sphere(r=3);
		translate([0,0,0]) cube([14,14,14]);
	}

	translate([10,  0, 10]) sphere(r=radiuseye); // 1

	translate([20,  5,  5]) sphere(r=radiuseye); // 2
	translate([20, 15, 15]) sphere(r=radiuseye); // 2

	translate([ 5,  5, 20]) sphere(r=radiuseye); // 3
	translate([10, 10, 20]) sphere(r=radiuseye); // 3
	translate([15, 15, 20]) sphere(r=radiuseye); // 3

	translate([ 5,  5,  0]) sphere(r=radiuseye); // 4
	translate([15,  5,  0]) sphere(r=radiuseye); // 4
	translate([ 5, 15,  0]) sphere(r=radiuseye); // 4
	translate([15, 15,  0]) sphere(r=radiuseye); // 4

	translate([ 0,  5,  5]) sphere(r=radiuseye); // 5
	translate([ 0, 15,  5]) sphere(r=radiuseye); // 5
	translate([ 0,  5, 15]) sphere(r=radiuseye); // 5
	translate([ 0, 15, 15]) sphere(r=radiuseye); // 5
	translate([ 0, 10, 10]) sphere(r=radiuseye); // 5

	translate([ 5, 20,  5]) sphere(r=radiuseye); // 6
	translate([15, 20,  5]) sphere(r=radiuseye); // 6
	translate([ 5, 20, 10]) sphere(r=radiuseye); // 6
	translate([15, 20, 10]) sphere(r=radiuseye); // 6
	translate([ 5, 20, 15]) sphere(r=radiuseye); // 6
	translate([15, 20, 15]) sphere(r=radiuseye); // 6
}
}
```
dice_rounded_smuk.scad:
```
$fn=25;

// Dice-Eyes Radius
radiuseye=1.8;

scale(2,2,2) {
difference() {
	minkowski() {
		translate([3,3,3], center=true) sphere(r=3);
		translate([0,0,0]) cube([14,14,14]);
	}

	translate([10,  0, 10]) sphere(r=radiuseye); // 1

	translate([20,  5,  5]) sphere(r=radiuseye); // 2
	translate([20, 15, 15]) sphere(r=radiuseye); // 2

	translate([ 5,  5, 20]) sphere(r=radiuseye); // 3
	translate([10, 10, 20]) sphere(r=radiuseye); // 3
	translate([15, 15, 20]) sphere(r=radiuseye); // 3

	translate([ 5,  5,  0]) sphere(r=radiuseye); // 4
	translate([15,  5,  0]) sphere(r=radiuseye); // 4
	translate([ 5, 15,  0]) sphere(r=radiuseye); // 4
	translate([15, 15,  0]) sphere(r=radiuseye); // 4

	translate([ 0,  5,  5]) sphere(r=radiuseye); // 5
	translate([ 0, 15,  5]) sphere(r=radiuseye); // 5
	translate([ 0,  5, 15]) sphere(r=radiuseye); // 5
	translate([ 0, 15, 15]) sphere(r=radiuseye); // 5
	translate([ 0, 10, 10]) sphere(r=radiuseye); // 5

	translate([ 5, 20,  5]) sphere(r=radiuseye); // 6
	translate([15, 20,  5]) sphere(r=radiuseye); // 6
	translate([ 5, 20, 10]) sphere(r=radiuseye); // 6
	translate([15, 20, 10]) sphere(r=radiuseye); // 6
	translate([ 5, 20, 15]) sphere(r=radiuseye); // 6
	translate([15, 20, 15]) sphere(r=radiuseye); // 6
}
}
```


[User]
I'm looking to create a parametric z-stop adjustment mechanism, similar to the one on Thingiverse (thing:24260) but modified to use a nylock nut instead of a spring. I need it to be fully parametric so I can adjust it for different printers and components in the future.

Specifically, I'd like the design to have these adjustable parameters:

*   `nut_height`: The height of the hole for the nylock nut.
*   `nut_width_short`: The shorter width of the hole for the nut (assuming a non-square nut).
*   `nut_width_long`: The longer width of the hole for the nut.
*   `nut_holder_thickness`: The thickness of the material above and below the nut hole.
*   `width`: The overall width of the adjustment piece.
*   `base_length`: The length of the base which attaches to the printer frame.
*   `base_thickness`: The thickness of the base.
*  `outer_thread`:  The diameter for the mounting screw thread hole.
* `nut_holder_depth`: The depth of the nut holder.

The design should consist of:

*   A base that can be glued or screwed onto the printer's frame (or x-idler, as in the original design).
*   Two end pieces that each hold half of the nylock nut (top and bottom).
*   Side pieces connecting the end pieces, creating the nut holder cavity.
*   A threaded hole to accommodate the z-stop adjustment screw.

The mechanism should be symmetrical. It should produce two identical parts.

Could you generate the necessary OpenSCAD code for this? I'd prefer the code to be organized well with clear comments.

Oh, and I'll be needing the code to be generated entirely from scratch, not an alteration of the provided example.

[Assistant]
easy_adjust_z_stop_parametric.scad:
```
//------------------------------------------------------------
// Parametric easy adjust z-stop
//
// http://www.thingiverse.com/wardwouts
//
//
//------------------------------------------------------------

// Determines the heigth of the hole for the nut
nut_height = 3.85;
// Determines the width of the hole for the nut
nut_width_short = 5.4;
// Determines the depth of the hole for the nut
nut_width_long = 6.0;

// How thick should the bit above and below the nut be?
nut_holder_thickness = 2;

// of the piece
width = 10;
// Length of the base
base_length = 20;
// Thickness of the base
base_thickness = 5;

// How big should the screw hole be?
outer_thread = 3.2;

nut_holder_depth = nut_width_long;

// code below

module base() {
	// simple bar to glue to the x-idler
	cube([base_length,width/2,base_thickness]);
}

module end() {
	translate([0,0,base_thickness]){
		difference(){
			cube([nut_holder_thickness,width/2, nut_holder_depth]);
			translate([-nut_holder_thickness,width/2,nut_holder_depth/2]){
				rotate([0,90,0]){
					cylinder(h=nut_holder_thickness*3,r=outer_thread/2,$fn=20);
				}
			}
		}
	}
}

module side() {
	translate([nut_holder_thickness,0,base_thickness]){
		cube([nut_height,(width-nut_width_short)/2,nut_holder_depth]);
	}
}

module halfpart(){
	base();
	end();
	translate([nut_height+nut_holder_thickness,0,0]){
		end();
	}
	side();
}

halfpart();
translate([0,width,0]){
	mirror([0,1,0]){
		halfpart();
	}
}
```


[User]
Hey, I'm looking to design a parametric combination lock with thumbwheels in OpenSCAD. I've seen a few examples online, but I want one that I can fully customize. I'd like the design to be modular so I can print the different parts separately.

Here's a breakdown of the features I'm imagining:

**General Structure:**

*   The lock should have a base that holds the thumbwheels, a clasp that secures the wheels, and the thumbwheels themselves.
*   I want to be able to specify the number of digits in the combination (e.g., 3, 4, 5...).
*   The number of positions for each digit should also be customizable (e.g., 6, 8, 10...). This means the number of detents on the thumbwheel.
*   There should be a way to adjust the clearance between the parts to get a good fit when printed.

**Thumbwheel Details:**

*   Each wheel will have a "rosette" with raised bumps, and a separate numbered polygon part that mates to the rosette. The bumps should engage with the clasp.
*   I'd like to be able to specify the radius of the thumbwheel, the height of the bumps, the overall thickness of the wheel, and the thickness of the numbered polygon.
*   The wheel should rotate on an axle, and I'll need to specify the axle radius.
*   The lock mechanism on the wheel should be a cam, and I need to specify the cam radius and thickness.
*   I need to be able to select the combo number for each digit.
*   The numbers should be displayed on the polygon and stick out slightly.

**Base Details:**

*   The base should have walls and tabs to keep everything aligned.
*   I want to be able to control the thickness of these walls and tabs.
*   There should be spring-like "flags" that hold the wheels in position. I need to control their thickness and width.
*   The base should have tabs with screw holes for mounting.

**Clasp Details:**

*   The clasp will have arms that fit into the cam of the thumbwheels.
*   I'll need to control the thickness of these clasp arms.
*   The clasp should have screw holes. I'd like them to be countersunk, and I'll need to control the radii of both the large and small ends of the countersink.

**Libraries:**

*   I'm looking for the designs to use the `write/Write.scad` library to handle the number engraving.

I think that's it. It sounds like a lot, but breaking it down like this makes sense. It would be great to see different parts of the lock as separate modules, and maybe a 'full' display module that puts everything together. It's mostly for 3D printing so it needs to be accurate. I'm excited to see how this turns out!

[Assistant]
Combo_lock_2.scad:
```
//****************************************************
//****************************************************
//Thumbwheel Combination Lock
//by Marc Sulfridge
//****************************************************
//****************************************************

use <write/Write.scad>

//****************************************************
//Start of user defined parameters.
//****************************************************
/* [Global] */
// Module to build. "Base" = the piece that contains all the wheels. "Clasp" = the piece that grabs the wheel cams.  "Rosette" = the bumped portion of the wheel.  "Numbers" = the numbered polygon portion of the wheel.  "Full" = a pretty display of all the pieces put together.  "Full" is not for printing.
part = "Full"; // [Full, Base, Clasp, Rosette, Numbers]
// Number of possible values for each digit of the combination.
n = 10; // [3,4,5,6,7,8,9,10]
// Clearance between parts to ensure slip fit.
clear = 0.4; //
//****************************************************

/* [Base] */
// Number of digits in the combination
N=3; // [1,2,3,4,5,6,7,8,9,10]

// Thickness of the walls and tabs in the base.
base_t = 2; //

// Thickness of the flag springs that lock the wheels in position. Should be as thin as possible without breaking
flag_t = 0.6; //
// Width of the flag springs that lock the wheels in position.
flag_w_exact = 2; //
// Length of the screw hole tabs on the base.
tab_l = 6; //
//****************************************************

/* [Wheels] */
// Radius of the thumbwheels.
wheel_r = 20/2; //
// Height that the thumbwheel bumps stick out beyond the wheel radius.
bump_h = 1; //
// Thickness of the bumped wheel.
wheel_t = 2; //
// Thickness of the numbered polygon on the thumbwheel.
wheel_nums_out_t = 6; //
// Radius of the axle that the wheels turn on.
exact_axle_r = 3/2; //
// Radius of the cylinder that the locking cam is made from. Must be smaller than wheel_r and larger than axle_r.
cam_r = 6; //
// Thickness of the loocking cam. Must be thicker than the clasp thickness.
cam_t = 3.5; //
// Thickness that the bummped thumbwheel extends beyond the locking polygon that mates it to the number wheel.
wheel_lock_t = 1.5;
// Amount that the numbers extend out of the faces of the polygon.
wheel_nums_t = 2; //
// Which number to use for the combination.  Make one for each digit of the combination.  Must be between 0 and the number of possible values for each digit minus one.
combo_num = 0; // [0,1,2,3,4,5,6,7,8,9]
//****************************************************

/* [Clasp] */
// Thickness of the clasp arms that grab the thumbwheel cams. Make as thick as possible for strength.
clasp_t = 2.5; //
// Large radius of the counter-sunk screw holes
clasp_hole_r1 = 2; //
// Small radius of the counter-sunk screw holes
clasp_hole_r2 = 1; //
//****************************************************

/* [Hidden] */
// Pi = circumference/diameter for any circle.
pi = 3.1415926535;
// Fudge factor to ensure overalps.
wig=0.01;
// Large clearance between parts.
gap = 1; //

//****************************************************
// Calculated parameters
//****************************************************
alpha = 360/n;
axle_r = exact_axle_r+clear;
wheel_lock_r = wheel_r - wheel_lock_t;
clasp_r = cam_r+3;
clasp_w = 2*clasp_r;
flag_w = flag_w_exact-clear;
a = wheel_r*cos(alpha/2);
bump_r1 = wheel_r-a+bump_h;
bump_r2 = wheel_r*sin(alpha/2);
flat_gap = (cam_r-axle_r)/3;
base1_h = base_t+wheel_nums_out_t+wheel_t+cam_t+clear;
base_off = wheel_r+bump_h+base_t/2+gap;
base_w = 2*clasp_r+gap;
base_h = 2*(wheel_r+bump_h+base_t);
clasp_off = wheel_r+bump_h+base_t/2+gap;
clasp_h = 2*(wheel_r+bump_h+clasp_t);
tab_w = max((base_h - clasp_w)/2 - gap,tab_l);
tab_clear_w = 2*max(clasp_r+gap,wheel_r+bump_h+clear);

//****************************************************

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

//****************************************************
// Modules
//****************************************************

// Thumbwheel Rosette
module thumb_wheel() {
  difference() {
    union() {
      cylinder(r=wheel_r, h= wheel_t,center=false);

      for (i=[0:(n-1)]) {
        rotate([0,0,alpha*i+90-alpha/2]) translate([a,0,0]) scale([bump_r1/bump_r2,1,1])
          cylinder(r=bump_r2, h=wheel_t, center=false,$fn=20);
      }
    }
  translate([0,0,-wig])
    cylinder(r=axle_r,h=wheel_t+cam_t+2*wig,center=false,$fn=20);
  rotate([0,0,alpha/2]) translate([0,0,-wig])
    cylinder(r=wheel_lock_r+clear, h=wheel_t+2*wig, center=false, $fn=n);
  }
}

// Numbered Polygon
module wheel_nums_out(num=0) {
  difference() {
    union() {
      rotate([0,0,alpha/2])
        cylinder(r=wheel_r,h=wheel_nums_out_t,center=false,$fn=n);
      for (i=[0:(n-1)]) {
        rotate([0,0,(i-num)*alpha])
        translate ([a-wheel_nums_t/2,0,(wheel_nums_out_t+gap/2)/2]) rotate([180,-90,0])
          write(str(i),t=2*wheel_nums_t,h=2*pi*wheel_r/n-1.5*gap,center=true);
      }
      intersection() {
        cylinder(r=cam_r, h= wheel_t+cam_t+wheel_nums_out_t, center=false,$fn=20);
        translate([0,flat_gap/2,(wheel_t+cam_t+wheel_nums_out_t)/2])
          cube([2*cam_r,2*cam_r-3*flat_gap,wheel_t+cam_t+wheel_nums_out_t],center=true);
      }
      rotate([0,0,alpha/2]) cylinder(r=wheel_lock_r,h=wheel_nums_out_t+wheel_t,center=false,$fn=n);
    }
    translate([0,0,-wig])
      cylinder(r=axle_r,h=wheel_t+cam_t+wheel_nums_out_t+2*wig,center=false,$fn=20);
  }
}

// Single wheel section of the base.
module base1() {
  union() {
    difference() {
      translate([-base_off-base_t/2,-base_h/2-gap,0])
        cube([base_w/2+base_off+base_t/2,base_h,base_t],center=false);
      translate([0,0,-wig])
        cylinder(r=axle_r,h=base_t+2*wig,center=false,$fn=20);
    }
    translate([-base_off+base_t/2,-base_off-base_t/2,0])
      cube([base_w/2+base_off-base_t/2,base_t,base1_h+wig],center=false);
    hull() {
      translate([-flag_t/2,wheel_r+clear,0])
        cube([flag_t,flag_w,base1_h],center=false);
      translate([-flag_t/2,wheel_r+flag_w,0])
        cube([2*flag_t,clear,base1_h],center=false);
    }
    translate([base_w/2-base_t,wheel_r,0])
      cube([base_t,base_t,base1_h+base_t],center=false);
    translate([base_w/2-gap,-wheel_r-bump_h-gap-base_t,base_t+clear+wheel_nums_out_t+wheel_t])
      cube([gap,2*(wheel_r+base_t)+bump_h+gap,cam_t+base_t],center=false);
  }
}

// Tabs on the base.
module tab(num=N, w=tab_w) {
  difference() {
    cube([base_t+wig,w,2*tab_l+num*base1_h+base_t],center=false);
    translate([base_t/2+wig,w/2,tab_l/2]) rotate([0,90,0])
      cylinder(r1=clasp_hole_r1, r2=clasp_hole_r2, h=base_t+3*wig, center=true, $fn=20);
    translate([base_t/2+wig,w/2,3*tab_l/2+base_t+num*base1_h]) rotate([0,90,0])
      cylinder(r1=clasp_hole_r1, r2=clasp_hole_r2, h=base_t+3*wig, center=true, $fn=20);
  }
}

// Full base.
module base(num=N) {
  difference() {
    union() {
      translate([-base_off-base_t/2,-base_h/2-gap,-tab_l])
        tab(num);
      translate([-base_off-base_t/2,base_h/2+gap-tab_w,-tab_l])
        tab(num,tab_w-base_t/2);
      for (i=[0:(num-1)]) {
        translate([0,0,i*base1_h]) base1();
      }
      translate([0,0,num*base1_h])
        difference() {
          translate([-base_off-base_t/2,-base_h/2-gap,0])
            cube([base_w/2+base_off+base_t/2,base_h,base_t],center=false);
          translate([0,0,-wig])
            cylinder(r=axle_r,h=base_t+2*wig,center=false,$fn=20);
        }
    }
      translate([-base_off-base_t/2-wig,-tab_clear_w/2,base_t-wig])
        cube([base_t+3*wig,tab_clear_w,num*base1_h-base_t], center=false);
  }
}

// Single wheel section of the clasp.
module clasp1() {
  union() {
    difference() {
      hull() {
        cylinder(r=clasp_r,h=clasp_t,center=false,$fn=20);
        translate([0,-clasp_off,clasp_t/2])
          cube([clasp_w,base_t,clasp_t],center=true);
      }
      translate([0,0,-wig])
        cylinder(r=cam_r+clear,h=clasp_t+2*wig,center=false,$fn=20);
      translate([-flat_gap/2,clasp_r,(wheel_t+cam_t)/2-wig])
        cube([2*cam_r-3*flat_gap+clear,2*clasp_r,wheel_t+cam_t+2*wig],center=true);
    }
    difference() {
      translate([0,-clasp_off,base1_h/2])
        cube([clasp_w,base_t,base1_h+wig],center=true);
      translate([0,-clasp_off,base1_h/2+clasp_t/2]) rotate([90,0,0])
        cylinder(r1=clasp_hole_r1, r2=clasp_hole_r2, h=base_t+2*wig, center=true, $fn=20);
    }
  }
}

// Full clasp.
module clasp(num=N) {
  union() {
    for (i=[0:(num-2)]) {
      translate([0,0,i*base1_h]) clasp1();
    }
    translate([0,0,(num-1)*base1_h])
      difference() {
        hull() {
          cylinder(r=clasp_r,h=clasp_t,center=false,$fn=20);
          translate([0,-clasp_off,clasp_t/2])
            cube([clasp_w,base_t,clasp_t],center=true);
        }
        translate([0,0,-wig])
          cylinder(r=cam_r+clear,h=clasp_t+2*wig,center=false,$fn=20);
        translate([-flat_gap/2,clasp_r,(wheel_t+cam_t)/2-wig])
          cube([2*cam_r-3*flat_gap+clear,2*clasp_r,wheel_t+cam_t+2*wig],center=true);
      }
  }
}

// Full combination lock.
module full_lock(num=N) {
  translate([0,0,-base_t-clear/2]) color("green") base(num);
  translate([0,0,wheel_nums_out_t+wheel_t+clear]) rotate([0,0,-90]) color("red") clasp(num);
  for (i=[0:(num-1)]) {
    translate([0,0,i*base1_h]) {
      color("gold") wheel_nums_out(i);
      translate([0,0,wheel_nums_out_t]) color("blue") thumb_wheel();
    }
  }
}

module show_part() {
  if (part=="Full") {
    rotate([-90,0,0]) full_lock();
  }
  else if (part=="Rosette") {
    thumb_wheel();
  }
  else if (part=="Numbers") {
    wheel_nums_out(combo_num);
  }
  else if (part=="Base") {
    rotate([90,-90,0]) base();
  }
  else if (part=="Clasp") {
    rotate([90,0,0]) clasp();
  }
  else {
    rotate([-90,0,0]) full_lock();
  }
}

show_part();

```


[User]
I'd like to design a customizable comb, and I'm thinking I'd like it to be made of several parts: a handle, the main body with the teeth, and some optional text on the side. I want to be able to control various dimensions of the comb, like the handle length, body length, the radii of the handle, thickness, tooth width, tooth spacing, text, and whether or not to include a handle reinforcement.

Specifically, the handle should be a rounded shape, almost like a stretched capsule, with a cylindrical hole. I'd need parameters for the handle's length, a larger and a smaller radius for the rounded ends, the overall thickness, and the radius of the hole. The body of the comb should be a sort of stretched rectangle with rounded ends, and I need parameters for its length, as well as the large radius to make the rounded ends, thickness, and the width and spacing of the teeth. The teeth themselves should taper from base to tip and be parametrically defined by base and tip width, thickness, and a spacing parameter. Finally, I want to be able to specify some text that will be extruded on one of the comb's faces. The text needs a parameter, and I'd want to be able to control the font of the text. And the reinforcement for the handle should simply be another copy of the handle, slightly scaled down, placed above the main handle and connected to it.

I think I'll need the `Write.scad` library for the text. Could you generate the OpenSCAD files for this?

[Assistant]
Peine_Custom.scad:
```
$fn=20;
use <write/Write.scad>

//arma un peine por partes
//
//mango
//cuerpo
//dientes
//texto
//
//Parametros
//largo mango / Handle's long
lm = 80;//largo mango / Handle's long
//largo cuerpo / Body's long
lc = 80;//largo cuerpo / Body's long
//radio mayor / larger radius
rmy = 12.5;//radio mayor / larger radius
//radio menor / smaller radius
rme = 6;//radio menor / smaller radius
//espesor / comb thickness
esp = 2;//espesor del peine / comb thickness
//radio del agujero / hole radius
ag = 3;//radio del agujero / hole radius
//ancho de la base del diente / tooth's base width
ad = 3;//ancho de la base del diente / tooth's base width
//ancho de la punta del diente / tooth's top width
pd = 1;//ancho de la punta del diente / tooth's top width
//separacion entre dientes / tooth separation
sep = 2;//separación entre bases del diente / tooth separation
//texto a grabar
texto = "Victoria";//nombre a imprimir
//Reforzar mango? (0=No, 1=Si)
refuerzo = 1;
//
//Modulos
//Modulo mango
module mango(lm,rmy,rme,esp,ag){
difference(){
	hull(){
		cylinder(h=esp,r=rmy);
		translate ([lm-rmy-rme,rmy-rme,0]) cylinder(h=esp,r=rme);
		}
	translate([0,0,-0.2]) cylinder(h=esp+1,r=ag);
	}
}
//
//Modulo cuerpo
module cuerpo(lm,lc,rmy,esp,ad,sep){
//primero calculo cuanto tiene que medir el cuerpo
//para que los espacios al ppio y fin sean parejos
cd = ceil((lc) / (ad + sep));//cantidad de dientes
ac = cd * (ad + sep) + sep;//ancho del calado
//dibujo el cuerpo
difference(){
	hull(){
		translate([lm-rmy,0,0]) cylinder(h=esp,r=rmy);
		translate([lm+lc-rmy,0,0]) cylinder(h=esp,r=rmy);
	}
	//calado del cuerpo
	translate([lm-rmy,-1.2*rmy,0]) cube([ac,1.4*rmy,esp]);
	}
}
//
//Modulo dientes
module dientes(lm,lc,rmy,esp,ad,pd,sep){
cd = ceil((lc) / (ad + sep));//cantidad de dientes
for (i=[1:cd]){
	hull(){
		translate([lm-rmy+i*(ad+sep)-ad,rmy/2,0]) cube([ad,0.1,esp]);
		translate([lm-rmy+i*(ad+sep)+(ad-pd)/2-ad,-rmy,0]) cube([pd,0.1,esp]);
	}
}
}
//
//modulo Texto
module texto(rmy,texto){
translate ([rmy, 0, esp]) write (texto,font="orbitron.dxf");
}

//ejecutar
mango(lm,rmy,rme,esp,ag);
cuerpo(lm,lc,rmy,esp,ad,sep);
dientes(lm,lc,rmy,esp,ad,pd,sep);
texto(rmy,texto);

if (refuerzo == 1){
	//Refuerzo mango
	difference(){
		translate([0,0,esp]) mango(lm,rmy,rme,esp,ag);
		translate([0,0,esp]) scale ([0.9,0.9,1]) mango(lm,rmy,rme,esp,ag);
	}
}

```


[User]
Hi, I'm looking to create a customizable project box in OpenSCAD and I need some help generating the code. I've seen a few examples online, but I want to be able to control the dimensions and some other parameters pretty easily.

Specifically, I want a rectangular box with the following adjustable features:

*   **Overall Dimensions:** I need to set the box's width (x), length (y), and height independently, in millimeters.
*   **Wall Thickness:** The thickness of the box walls should be adjustable.
*   **Corner Rounding:** I'd like to be able to round the corners of the box using a radius that can be set, defaulting to sharp corners when the radius is 0.
*   **Lid:** The box needs a separate lid that fits snugly on top. This lid should also have an adjustable thickness.
*   **Box/Lid Toggle:** I want to be able to choose whether to generate the box, the lid, or both.
*   **Screw Holes:** I need an option to include screw holes with pilot holes and a screw hole, and an additional option for countersunk screw holes. All of these are optional and probably should not be generated by default. I would like to specify pilot hole and screw hole diameters separately as parameters.

The lid should fit inside the lip of the box and overlap as in this design: http://www.thingiverse.com/thing:213934. I'd also like the lid's thickness to be a percentage of the height of the box, unless I specify a specific lid thickness that is less than the percentage. This percentage/absolute specification for lid thickness will ensure that the lid isn't too tall for the box.

I think that's everything. I don't want to use any external libraries like BOSL for this, I'd like it to be fairly simple. Can you help me create this OpenSCAD code?

[Assistant]
yet_another_project_box.scad:
```
// http://www.thingiverse.com/thing:213934

// ================ variables

//CUSTOMIZER VARIABLES

/* [Main] */

// in mm
x_width=100;

// in mm
y_width=200;

// in mm
height=50;

// Wall thickness in mm
thickness=2; // [1:10]

// Corner roundover in mm (0=sharp corner)
radius=5; // [0:50]

// Generate the box
do_box=1; // [0:no,1:yes]

// Generate a lid
do_lid=1; // [0:no,1:yes]

// height in mm
lid_thickness=5;

//CUSTOMIZER VARIABLES END

// Screw pilot hole size
screw_pilot=1.125*1;

// Screw hole size
screw_hole=2.5*1;

// Whether you want the screw countersunk
screw_countersink=0*1;

// =============== calculated variables
lid_height=min(height/4,lid_thickness);
corner_radius=min(radius,x_width/2,y_width/2);
xadj=x_width-(corner_radius*2);
yadj=y_width-(corner_radius*2);
snugfit=0.5/2;

// =============== program

// ---- The box
if(do_box==1) translate([-((x_width/2+1)*do_lid),0,height/2-thickness]) difference() {

union() {
minkowski() // main body
{
 cube([xadj,yadj,height-lid_height],center=true);
 cylinder(r=corner_radius,h=height-lid_height);
}

translate([0,0,lid_height-thickness]) minkowski() // main body overlap
{
 cube([xadj-thickness,yadj-thickness,height-(thickness*2)],center=true);
 cylinder(r=corner_radius,h=height);
}
}

translate([0,0,thickness*2]) minkowski() // inside area
{
 cube([xadj-((thickness+snugfit)*2),yadj-((thickness+snugfit)*2),height],center=true);
 cylinder(r=corner_radius,h=height);
}

};

// ---- The lid
if(do_lid==1) translate([(x_width/2+1)*do_box,0,lid_height/2]) {

difference() {
minkowski() // main body
{
 cube([xadj,yadj,lid_height],center=true);
 cylinder(r=corner_radius,h=lid_height);
}

translate([0,0,thickness]) minkowski() // inside area
{
 cube([xadj-(thickness-snugfit),yadj-(thickness-snugfit),lid_height],center=true);
 cylinder(r=corner_radius,h=lid_height);
}
}

};

```


[User]
Hey, I'm looking to create a parametric version of some cube gears I've designed, and I'd like the scad files to be modular and easy to customize. I've got a basic design in mind, which uses bevel gears inside a cube with snap-fit pins, and I'm using the `involute_gears.scad` library from MCAD and a custom `write/Write.scad` library for text. Let me describe the design:

The core of it is a cube with four gear mechanisms placed around a center block. Each gear mechanism uses two bevel gears - a larger gear (gear1) and a smaller gear (gear2), connected with a specific gear ratio, and the mechanism is attached with pins to the sides of the cube and the center block. The user should be able to select between several different gear ratios. I'm currently using ratios of 18:9, 9:6, and 18:15, but I would love to be able to input my own ratios.

The gears themselves should be created using the `bevel_gear` module from the MCAD library.  Each gear is attached to the side of the cube with snap-fit pins. The user should be able to customize the backlash of the gears, as well as the diameter of the gears and the distance between the gears (cone distance).  For each gear, there's a central bore, which is currently 0, and a face width that's proportional to the cone distance. I'd also like to have an option to choose the number of teeth for each gear, and let the program calculate the circular pitch to maintain a consistent distance between gears, based on the gear ratio and the distance between the center and the gear.

The cube itself is formed by intersecting four rectangular boxes and a smaller center cube (I'm using the intersection of several rotated boxes). The user should be able to change the overall size of the cube. The sides of the cube have snap pin holes for the gears to attach to. Each side of the cube will have two gears and two pins.

The snap pins themselves should be parametric and should be created with a nub and slot design. The design should use a cylinder to make the main shaft of the pin. On the side, there should be a nub and slot design. There should be a matching hole for the snap pins, that uses a cylinder, and a nub for a tighter fit. The user should be able to adjust the diameter, length, nub size, slot size and thickness of the pins.

For a nice touch, I'd like to be able to add text on the larger gears. The user should be able to input up to three lines of text and control the font, text size and placement. The text should be created using the module I've created with my custom `Write.scad` library, which loads a font from a .dxf file. I'm using a default font called `Letters.dxf`, but the user should also be able to select different .dxf fonts.

Finally, I would like an "assembly" module that places the gears in all the sides of the cube. The gears will not move without animation, but I'd like them to be placed in the correct spots.

It'd be great if you could provide me with separate modules for each of these components: the gears, the cube center, the snap pin, the snap pin hole, and the overall assembly, so that they're easy to re-use and customize. The code should use the libraries mentioned, and it should be easy to modify and add new features later.

[Assistant]
cubeGears5.scad:
```
// Customizable Cube Gears
// Note: the assembly is animated

use <MCAD/involute_gears.scad>
//use <../pin2.scad>
use <write/Write.scad>

choose(i=object);

//Choose which part to render (assembly is only for viewing)
object=4;//[0:Center,1:Large Gear,2:Small Gear,3:Pin,4:Plate,5:Assembly]
//Numbers of teeth on gears
type=0;//[0:18 & 9,1:9 & 6,2:18 & 15]
//Space between gear teeth
Backlash=0.5;
//First word on large gear
word1="";
//Second word on large gear
word2="";
//Third word on large gear
word3="";
//Height of words
fontsize=6;
Font = "write/Letters.dxf";//["write/Letters.dxf":Basic,"write/orbitron.dxf":Futuristic,"write/BlackRose.dxf":Fancy]

//use <utils/build_plate.scad>
////for display only, doesn't contribute to final object
//build_plate_selector = 0; //[0:Replicator 2,1:Replicator,2:Thingomatic,3:Manual]
////when Build Plate Selector is set to "manual" this controls the build plate x dimension
//build_plate_manual_x = 100; //[100:400]
////when Build Plate Selector is set to "manual" this controls the build plate y dimension
//build_plate_manual_y = 100; //[100:400]

rf1=50*1;// distance from center of cube to end of gear 1 (before clipping)
$fs=0.5*1;// adjust number of faces in holes

NR=[[18,9,0.7493,0.3746,1],
	[9,6,0.6860,0.4573,2],
	[18,15,0.6285,0.5238,5]];

Nr=NR[type];
n1=Nr[0];// number of teeth on gear 1
n2=Nr[1];// number of teeth on gear 2
r1=Nr[2];// these two numbers come from gearopt.m
r2=Nr[3];
nt=Nr[4];// number of turns per cycle
cp=0.28*1;// percentage of rf1 for the center block
dc=rf1/sqrt(1-pow(r1,2));
theta=asin(1/sqrt(3));
pitch=360*r1*dc/n1;
rf2=sqrt(pow(dc,2)-pow(r2*dc,2));

module choose(i=0){
	if(i==0)translate([0,0,rf1*cp])center();
	if(i==1)gear1();
	if(i==2)gear2();
	if(i==3)pinpeg();
	if(i==4){
		for(j=[0:3]){
			translate([40*(j-1.5),40*(j%2),0])rotate([0,0,10])gear1();
			translate([40*(j-1.5),40*((j+1)%2),0])rotate([0,0,10])gear2();
			translate([20*j,-40,0])pinpeg();
			translate([20*(j-0.5),-40,0])pinpeg();
		}
		translate([-40,-40,rf1*cp])center();
	}
	if(i==5)assembly();
	//if(i<5)build_plate(build_plate_selector,build_plate_manual_x,build_plate_manual_y);
}

module assembly()
rotate([0,0,45]){
	rotate([theta+90,0,0])center();
	twogears();
	rotate([0,0,180])twogears();
	rotate([180,0,90])twogears();
	rotate([180,0,-90])twogears();
}

module twogears(){
	rotate(a=[0,90-theta,90])rotate([0,0,nt*120*$t])translate([0,0,rf1*cp])gear1();
	rotate(a=[0,90-theta,0])rotate([0,0,-nt*n1/n2*120*$t])translate([0,0,rf2*cp])gear2();
}

module center(){
intersection(){
	box();
	rotate([2*(90-theta),0,0])box();
	rotate([2*(90-theta),0,120])box();
	rotate([2*(90-theta),0,-120])box();
	rotate(-[theta+90,0,0])rotate([0,0,45])cube(0.85*rf1,center=true);
}}

module box(){
render(convexity=2)
translate([0,0,(rf2-rf1)*cp/2])difference(){
	cube(size=[dc,dc,(rf1+rf2)*cp],center=true);
	translate([0,0,-(rf1+rf2)*cp/2])pinhole(fixed=true,fins=false);
	rotate([180,0,0])translate([0,0,-(rf1+rf2)*cp/2])pinhole(fixed=true,fins=false);
}}

module gear1(){
render()
intersection(){
	translate([0,0,-rf1*cp])rotate([0,theta-90,0])rotate([0,0,45])difference(){
		cube(size=rf1, center=true);
		rotate([0,0,45-180])translate([0,rf1/sqrt(2)-3,rf1/2])monogram(h=1);
		text(word1);
		rotate([-90,0,-90])text(word2);
		rotate([90,-90,0])text(word3);
	}
	difference(){
		translate([0,0,rf1*(1-cp)])rotate([180,0,90/n1])
		bevel_gear (number_of_teeth=n1,
			outside_circular_pitch=pitch,
			cone_distance=dc,
			face_width=dc*(1-cp),
			bore_diameter=0,
			backlash=Backlash,
			finish=0);
		pinhole(fixed=false);
	}
}}

module gear2(){
render()
intersection(){
	translate([0,0,-rf2*cp])rotate([0,theta-90,0])rotate([0,0,45])cube(size=rf1, center=true);
	difference(){
		translate([0,0,rf2*(1-cp)])rotate([180,0,90/n2])
		bevel_gear (number_of_teeth=n2,
			outside_circular_pitch=pitch,
			cone_distance=dc,
			face_width=dc*(1-cp),
			bore_diameter=0,
			backlash=Backlash,
			finish=0);
		pinhole(fixed=false);
	}
}}

module text(word)
rotate([0,0,45-180])translate([0,rf1*0.35,rf1/2])
	write(word,t=2,h=fontsize,center=true,font=Font);

module monogram(h=1)
linear_extrude(height=h,center=true)
translate(-[2,5])union(){
	difference(){
		square([4,5]);
		translate([1,1])square([2,3]);
	}
	square([6,1]);
	translate([0,2])square([2,1]);
}

// Parametric Snap Pins (http://www.thingiverse.com/thing:213310)

module pin(r=3.5,l=13,d=2.4,slot=10,nub=0.4,t=1.8,space=0.3,flat=1)
translate(flat*[0,0,r/sqrt(2)-space])rotate((1-flat)*[90,0,0])
difference(){
	rotate([-90,0,0])intersection(){
		union(){
			translate([0,0,-0.01])cylinder(r=r-space,h=l-r-0.98);
			translate([0,0,l-r-1])cylinder(r1=r-space,r2=0,h=r-space/2+1);
			translate([nub+space,0,d])nub(r-space,nub+space);
			translate([-nub-space,0,d])nub(r-space,nub+space);
		}
		cube([3*r,r*sqrt(2)-2*space,2*l+3*r],center=true);
	}
	translate([0,d,0])cube([2*(r-t-space),slot,2*r],center=true);
	translate([0,d-slot/2,0])cylinder(r=r-t-space,h=2*r,center=true,$fn=12);
	translate([0,d+slot/2,0])cylinder(r=r-t-space,h=2*r,center=true,$fn=12);
}

module nub(r,nub)
union(){
	translate([0,0,-nub-0.5])cylinder(r1=r-nub,r2=r,h=nub);
	cylinder(r=r,h=1.02,center=true);
	translate([0,0,0.5])cylinder(r1=r,r2=r-nub,h=5);
}

module pinhole(r=3.5,l=13,d=2.5,nub=0.4,fixed=false,fins=true)
intersection(){
	union(){
		translate([0,0,-0.1])cylinder(r=r,h=l-r+0.1);
		translate([0,0,l-r-0.01])cylinder(r1=r,r2=0,h=r);
		translate([0,0,d])nub(r+nub,nub);
		if(fins)translate([0,0,l-r]){
			cube([2*r,0.01,2*r],center=true);
			cube([0.01,2*r,2*r],center=true);
		}
	}
	if(fixed)cube([3*r,r*sqrt(2),2*l+3*r],center=true);
}

module pinpeg(r=3.5,l=13,d=2.4,nub=0.4,t=1.8,space=0.3)
union(){
	pin(r=r,l=l,d=d,nub=nub,t=t,space=space,flat=1);
	mirror([0,1,0])pin(r=r,l=l,d=d,nub=nub,t=t,space=space,flat=1);
}
```


[User]
Hey, I'm looking to design a parametric tube socket in OpenSCAD, and I'm hoping you can help me generate the code.

Basically, the socket needs to have a circular arrangement of pin holes. I need to be able to specify the diameter of that pin ring, the diameter of the individual pin holes, the number of pins, and the height of the socket.

I want to use standard metal pegs that I'm pulling from 2.54mm (1/10") inline sockets. These pegs have a nominal size of 1.75mm, so the hole diameter will need to be a bit larger. The design will be 3D printed, so clearance to make the pins fit is important.

The default parameters I'm thinking of are for an IW-18 VFD tube, which has a pin ring diameter of 17mm, and 22 pins. The height is about 7mm.

I was also thinking it might be helpful to have a second cylinder subtraction that's just a little bit smaller in diameter than the pin ring. This will remove material, so it'll be faster to print and use less material.

I'm planning to extract the metal pegs from the inline sockets, put them into the printed socket, and then push them down using a soldering iron heated to around 150°C.

I want to make sure to include a comment that it's best to solder wires to the socket pins before putting them into the printed socket to avoid damaging the plastic, although I know you can solder them after as well.

Could you write me an OpenSCAD file that achieves this? It doesn't need any fancy libraries, just the base OpenSCAD functions.

[Assistant]
parametric_tube_socket.scad:
```
pin_ring_diameter=17;
pin_size=1.75;
pin_count=22;
height=7;

difference()
{
cylinder(r=(pin_ring_diameter/2)+(2*(pin_size/2)),h=height,$fn=64);

cylinder(r=(pin_ring_diameter/2)-(2*(pin_size/2)),h=height+1,$fn=64);

for (i=[0:(360/pin_count):360])
{
	rotate([0,0,i])
	translate([(pin_ring_diameter/2),0,0])
	cylinder(r=(pin_size/2),h=height+1, $fn=16);
}

}
```


[User]
Hey, I'm looking for an OpenSCAD design to help with bed leveling for my 3D printer. I currently use a simple outline that I print, but I'd like to make it more configurable and also have a separate module for defining the build plate itself. I have a single SCAD file right now that I've been using, but I'd like to have the main outline and build plate definition in separate files.

The basic idea is to create a thin outline of the print bed. It should have a rectangular shape. The outline itself should be a solid rectangle with a hollowed out interior and then additional rectangular extrusions for the outline itself. This should allow me to feel the outline and quickly see if the print nozzle is too close or far away at different parts of the print bed. I want to be able to set the thickness of the outline, the height of the print, and the overall X and Y dimensions of the build plate, and also to be able to specify the kind of printer and get a matching outline.

I have a few specific printer presets I need to be able to choose from (Replicator 2, Replicator, Thingomatic), and I want a manual setting so I can specify my own build plate dimensions too. The overall design is pretty basic, it's just a flat rectangular frame that traces the bounds of the build plate. I think that if I have a parametric outline and the ability to select my build plate from a list, that'd be pretty awesome. I'm not familiar with using libraries, but I see that my current code has a `build_plate.scad` file, so I need that, and I think all of the outline calculations should be in a `bed_level.scad` file. I'm not looking for any improvements on the basic design, just a configurable version that is broken up into two files, and I'd also want you to generate the actual code instead of just telling me how to write it.

[Assistant]
BedLevel.scad:
```
// Print bed level test

use <utils/build_plate.scad>

//Select your build plate size
build_plate_selector = 1; //[0:Replicator 2,1: Replicator,2:Thingomatic,3:Manual]

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

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

//Width of outline (mm)
thick = 1;

//Height (mm).
height = 0.2;

if(build_plate_selector == 0){
	outline(285,153,height,thick);
	}
if(build_plate_selector == 1){
	outline(225,145,height,thick);
	}
if(build_plate_selector == 2){
	outline(120,120,height,thick);
 	}
if(build_plate_selector == 3){
	outline(build_plate_manual_x,build_plate_manual_y,height,thick);
	}

module outline(x,y,z,thick) {
	translate([0,0,z/2]) {
		difference() {
			cube([x,y,z], center=true);
			cube([x-2*thick,y-2*thick,z+2], center=true);
			}
		cube([x,thick,z], center=true);
		cube([thick,y,z], center=true);
		}
	}

build_plate(build_plate_selector,build_plate_manual_x,build_plate_manual_y);
```