[User]
Hi! I'm looking to design a flexible, interlocking grid system, kind of like the one described in the github repo parametric-lab, but I need a parametric design that I can customize more easily. I’d like it to be designed for OpenSCAD.

The basic idea is a grid of cells with walls, and then additional walls to close the grid. I'm aiming to use this to hold things like small petri dishes, but also want the flexibility to be able to use it for other containers like bottles. I'd like the option to include a floor underneath the grid for more solid support, if needed.

Here's the breakdown of what I need as parameters:

*   **`wall_width`**: The thickness of the grid walls.
*   **`hole_size`**: The inner diameter of each grid cell (or the size for a petri dish/bottle to fit into).
*   **`cells_x`**: The number of cells along the X axis.
*   **`cells_y`**: The number of cells along the Y axis. It would be great to decouple `cells_x` and `cells_y` so they don't have to be equal, which is an issue in the existing design.
*   **`height`**: The height of the grid walls.
*   **`floor_thickness`**: The thickness of the floor (if included, setting to 0 should mean there is no base).
*   **`socket_enlargement`**: The amount that the connector sockets are bigger than the connectors themselves, this needs to be variable as it needs to be larger with increasing height. I would like the adjustment to be calculated in the design.
*   **`perforation_radius`**: The radius of the circular perforations on the floor.
*  **`perforation_spacing`**: The spacing between the circular perforations on the floor.

The design should include:

*   The main grid structure with walls.
*   Extra walls to enclose the grid.
*   Connectors at the edges of the grid for the extra walls to attach to (and of course, corresponding sockets on the extra walls).
*   An option to add a floor with perforations for drainage or ventilation.
*   Reinforcements at the base of the grid if there is no floor.

I would also like a warning to be issued if `cells_x` or `cells_y` are below 1.

Please provide a parametric OpenSCAD file or files which incorporates all the above details. I do not need any included libraries.

[Assistant]
flexible_grid.scad:
```
// flexible grid
// https://github.com/davidelliott/parametric-lab
// License: CC-BY

// This design is for a flexible interlocking grid system
// initially made for holding small petri dishes in position
// Code is quite rough but it works for the original purpose
// Design is not fully parameterised

// TO DO / known problems
// bug- Grid has to be a square - i.e. cells_x = cells_y
// feature- option for cells to not be square

// set parameters
wall_width=5;

// Cryo tube rack
hole_size=11;
cells_x=4;
cells_y=4;
height=20;
floor_thickness=1.5; // Set 0 for no base
//

// calculated dimensions
socket_enlargement=1.1+(height/500); // make the sockets slightly bigger with height increase
unit_length=hole_size+wall_width;
total_x=unit_length*cells_x;
total_y=unit_length*cells_y;

// print the total dimensions
echo(total_x);
echo(total_y);

///////////////////////
// build the objects //
///////////////////////
// In OpenSCAD 2014.09.05 rendering both grid and walls does not work properly
// In OpenSCAD 2014.03 it was fine, don't know why.
// hence here a choice to build walls or grid separately.

grid=1; // build the main grid [0,1]
walls=0; // build extra walls [0,1]

if(grid){
// the main grid
main();
}

if(walls){
// the extra walls to close the grid.
translate([0,total_y+wall_width*1.5,0]){
extra_wall_b();
}

rotate([0,0,-90]){
translate([-total_x-wall_width,total_y+wall_width*1.5,0]){
extra_wall_a();
}
}

}

//////////////
// MODULES //
/////////////

module extra_wall_a(){

	difference(){
		cube([total_x,wall_width,height]);
		translate([0,0,-2]){
			connector_array(h=height+5,adj=socket_enlargement+0.05,start=0,end=cells_x);
		}
	}
}

module extra_wall_b(){

	difference(){
	union(){
		cube([total_x,wall_width,height]);
rotate([180,0,90]){
	translate([0,total_x,-height]){
		connector_array(start=0,end=0);
	}
}
} // end of union
// now remove the sockets

		translate([0,0,-2]){
			connector_array(h=height+5,adj=socket_enlargement+0.05,start=0,end=cells_x-1);
		}
	}

}

module main(){
difference() {
union() {
// build the base.
color("brown")
difference(){
	cube([total_x,total_y,floor_thickness]);
	perforations();
}

// build the grid
for(i=[0:cells_x-1]) {
		translate([0,i*(unit_length),0]){
			cube([total_x,wall_width,height]);
		}
	}

for(i=[0:cells_y-1]) {
		translate([i*(unit_length),0,0]){
			cube([wall_width,total_y,height]);
		}
}

// add reinforcements if there is no floor
if(floor_thickness<0.1) {
for(i=[0:cells_x-1]) {

	translate([0,i*(unit_length)+wall_width,0]){
rotate([0,0,270]){
		reinforcement(i);
	}
}
}

for(i=[0:cells_y]) {
		translate([i*(unit_length),0,0]){
			reinforcement(i);
		}
}
} // end of if

// add connectors
translate([0,total_y,0]){
connector_array(start=0,end=cells_y-1);
}

rotate([180,0,90]){
	translate([0,total_x,-height]){
		connector_array(start=0,end=cells_x-1);
	}
}

} // end of union

// remove connector sockets
translate([0,0,-2]){
	connector_array(h=height+5,adj=socket_enlargement,start=0,end=cells_x-1);
}
rotate([180,0,90]){
	translate([0,0,-height-2]){
		connector_array(h=height+5,adj=socket_enlargement,start=0,end=cells_y);
	}
}

} // end of difference group
} // end of module main

module connector_array(h=height,adj=1,start=0,end=cells_y) {
	for(i=[start:end]) {
		translate([i*(unit_length),0,0]){
			connector(h=h,adjust=adj);
		}
	}
}

module connector(subtract=false,adjust=1) {
translate([0,0,0]){
hull(){
translate([-wall_width*adjust/2,wall_width*adjust/2,0]){
cube([wall_width*2*adjust,1*adjust,h]);
}
cube([wall_width*adjust,1*adjust,h]);
}
translate([0,-3,0]){
	cube([wall_width*adjust,5,h]);
}
}
}

module reinforcement(i=1) {
if(i<cells_x){
reinforcement_part();
}
if(i>0) {
translate([wall_width-0.1,0,0]){
mirror("x"){
reinforcement_part();
}
}
}
}

module reinforcement_part() {
	r=wall_width;
	difference(){
		translate([wall_width-0.1,r,0]){
			cylinder(r=r,h=height);
		}

		translate([-0.1,-0.1,-1]){
			cube([r*4,wall_width,height*2]);
			cube([wall_width-0.01,r*3,height*2]);
		}

	} // end of difference
}

module perforations(rad=2.5,space=0.25){
	perf_total = (rad*2)+space; // length of each perforation inc spacing
	offset=perf_total/2; // offset alternate rows for better packing
	//packing_factor - calculate spacing by Pythagoras
	// looking for value of b in a2 + b2 = c2

	a=perf_total/2;
	c=perf_total;

	x_spacing = pow((c*c) - (a*a) , 1/2);
//	perf_n=total_x/perf_total; // number of perforations needed
	perf_x=total_x/x_spacing; // number of perforations needed
	perf_y=total_x/perf_total; // number of perforations needed

	for(y=[0:perf_y-1]) {
		for(x=[0:perf_x-1]) {
			translate([x*x_spacing,y*perf_total+(even(x)*offset),-2]) {
				cylinder(h=floor_thickness+4,r=rad,$fn=6);
			}
		}
	}
}

function even(n) = n%2;

```


[User]
I need an OpenSCAD file to generate a closet shelf hook, similar to the one I already have, but I want to make it fully parametric and with some extra features.

The basic hook design should have two main vertical support sections, connected by a horizontal section, forming a kind of "U" shape. Imagine that the two vertical supports are parallel to each other and the horizontal section acts as a bridge connecting their top edges. The hook is then meant to be inserted into holes in the closet so the horizontal bridge is resting flush with the closet side.

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

*   `hook_height`: The height of each of the vertical support sections, from the bottom edge to the top of the horizontal bridge.
*   `hook_depth`: The depth of the shelf-supporting section (the part of the horizontal section that sticks out from the closet)
*  `hook_width`: The width of the whole hook (across the vertical supports).
*   `hole_distance`: The vertical distance between the centers of the two vertical sections, or the length of the side of the bridge in the x direction.
*   `hole_depth`: The depth of each of the vertical support sections.
*   `cut_depth`: The depth of the inset cut in each vertical section.
*    `cut_height`: The height of the inset cut in each vertical section.

Also, I'd like to add the following:

*   A rounded edge on the horizontal section of the hook, on the exposed or shelf-side end, to make insertion of the shelf easier. I'd like to be able to specify this radius using the parameter: `bridge_edge_radius`
*   The option to add a screw hole to the *top* of the hook (the horizontal bridge), for extra stability. The diameter of the hole should be parametric with `screw_hole_diameter`

I'd also like to include comments within the code explaining what each section does and how each parameter affects the design.

It would be good to see the final design with the standard `translate()` and `rotate()` to allow easier 3D printing.

No external libraries are needed.

[Assistant]
closet_self_hook.scad:
```
/*
Create a closet self hook for 3D printing
By: Dave Borghuis / zeno4ever
Version : 1.0
Date : 22-10-2014
For sugestions email me at : dave@daveborghuis.nl
*/

//Hight of the holes
hookhight = 13;

//Depth of the self support
hookdepth = 12;

//Distance between holes
hookdistance = 17;

//width of the whole hook
hookwidth = 13;

//Depth of the hook
holedepth = 12;

cutdepth = 2;
cuthigth = 4;

module hook()
{
	difference() {
		//base blok
		union() {
			cube([holedepth,hookwidth,hookhight]);
			translate([0,0,hookdistance+hookhight]) cube([holedepth,hookwidth,hookhight]);
			translate ([-hookdepth,0,0]) cube([hookdepth,hookwidth,hookdistance+2*hookhight]);
		}
		//make holes
		{
			cube([cutdepth,hookwidth,cuthigth]);
			translate([0,0,hookdistance+hookhight]) cube([cutdepth,hookwidth,cuthigth]);
		}
	}
}

hook();

```


[User]
Hi, I'm looking to design a simple, adjustable stand that can be used for tablets, phones, e-readers, and even clipboards. I want it to be parametric so I can easily adjust it for different devices.

The basic idea is a curved arc with clips at each end that grip the sides of the device. The curvature should be adjustable, so I can control how steeply it leans back. The clips should also be adjustable in terms of their radius and how far they wrap around the device.

Here are the parameters I envision:

*   `_length`: The overall length of the stand.
*   `_height`: The height or thickness of the stand itself.
*   `_curvature`: Controls the arc of the stand, with lower values resulting in a flatter arc and something like 100 for a semicircle.
*   `_thickness`: The thickness of the stand material.
*   `_clip_radius`: The radius of the clips that grip the device.
*   `_clip_angle`: How far the clips wrap around the device, measured in degrees.

The stand should be a single piece, and the clips should be integrated with the arc.

I'd like the design to be in OpenSCAD.  I'm not using any libraries and just want everything in one or more SCAD files. Let me know if you have any questions, thanks!

[Assistant]
Clip_Stand_v1-0.scad:
```

// Length of the stand
_length = 160.0;

// height of the stand
_height = 24.0;

// Curvature of the stand (lower values for a flatter arc, 100 for a semicircle)
_curvature = 99; //[50:100]

// Thickness of the stand
_thickness = 3;

// Radius at the ends where it clips to the device
_clip_radius = 2.5;

// How far around the device the clips run
_clip_angle = 100; //[60:180]

////////////////////////////////////////////////////////////////////////

// only works from [0 to 180] degrees, runs clockwise from 12 o'clock
module smallArc(radius0, radius1, angle, depth) {
	thickness = radius1 - radius0;
	eps = 0.1;

	union() {
		difference() {
			// full arc
			cylinder(r=radius1, h=depth, center=true);
			cylinder(r=radius0, h=depth+2*eps, center=true);

			for(z=[0, 180 - angle]) {
				rotate([0,0,z])
				translate([-radius1,0,0])
				cube(size = [radius1*2, radius1*2, depth+eps], center=true);
			}
		}
	}
}

// arc from [0 to 360] degrees with rounded ends, runs clockwise from 12 o'clock, rounded tips not included in angle computation
module roundArc(radius0, radius1, angle, depth) {
	thickness = radius1 - radius0;
	cutAngle = 360-angle;
	centerRadius = (radius0 + radius1)/2.0;
	union() {
		if (angle > 180) {
			smallArc(radius0, radius1, 180, depth);
			rotate([0,0,-180]) {
				smallArc(radius0, radius1, angle-180, depth);
			}
		} else {
			smallArc(radius0, radius1, angle, depth);
		}

		// round ends
		for(t = [ [0,centerRadius,0],
					 [centerRadius * -sin(cutAngle), centerRadius * cos(cutAngle),0] ]) {
			translate(t) {
				cylinder(r=thickness/2, h=depth, center=true);
			}
		}
	}
}

module makeStand(arcRadius, angle, height, outerThickness, clipRadius, clipAngle) {
	ir = arcRadius;
	or = ir + outerThickness;
	cx = (ir-clipRadius)*sin(angle/2);
	cy = (ir-clipRadius)*cos(angle/2);

	union() {

		//	spine
		rotate([0,0,angle/2]) {
			smallArc(ir, or, angle, height, $fn=180);
		}

		// clip
		for (m=[1,0]) {
			mirror([m,0,0]) {
				translate([cx, cy, 0])
				rotate([0,0,-angle/2]) {
					roundArc(clipRadius, clipRadius+outerThickness, clipAngle, height, $fn=45);
				}
			}
		}
	}
}

module make() {
	radius = _length / (2 *(_curvature/100));
	angle = 2 * asin(_length/(2*radius));

	translate([0,-radius,_height/2]) {
			makeStand(radius,
					  angle,
					  _height,
					  _thickness,
					  _clip_radius,
					  _clip_angle);
		}
}

make();
```


[User]
I need a parametric OpenSCAD design for a wall-mounted remote control holder, specifically for those small, thin remotes that control RGB LED strips. I've included a simple SCAD file that demonstrates the basic idea but it's not parametric and I'm looking for a better approach.

Here's what I'd like it to do:

*   **General Shape:** The holder should be roughly a rectangular frame with two cylindrical posts sticking out to hold the remote in place. Think of a simplified cradle for the remote.
*   **Parametric Dimensions:** I need to be able to easily change:
    *   The length and width of the frame.
    *   The height of the frame.
    *   The thickness of the frame walls.
    *   The diameter of the posts and their spacing.
    *   The height of the posts.
    *   The amount of the post that sticks out of the frame (the "standoff").
*   **Wall Mounting:** The design should include mounting holes that allow it to be easily attached to a wall. I'd like to be able to specify the diameter of these mounting holes, and be able to select where they are placed relative to the frame.
*  **Tolerance:** The design should automatically handle some tolerance to avoid the remote being too tight.
*   **Easy Printing:** The design should print without supports.

For the sake of modularity, please use the `lazy.scad` library's macros. I understand that I will have to include the `lazy.scad` file in my project.

I'd like to be able to generate this model and customize it to various remotes I have around the house. Thanks!

[Assistant]
rgbremoteholder.scad:
```

l = 60;
b = 60;
h = 8;
t = 3;
s = 4;

difference()
{
hull()
{
for ( a = [ -1, +1 ] )
	tx( l/2*a ) ty( b/4 )
		cbox( t, b/2, t );

	ty( -b/2 )
		cbox( l/2, t, t );
}

for ( a = [ -1, +1 ] )
	ty( a * l/4 )
		ccyl( d = s, h = 100, $fn = 16 );

for ( a = [ -1, +1 ] )
	ty( a * l/4 ) tz( t/2 )
		ccyl( d1 = s, d2 = s+t*2, h = t, $fn = 16 );
}

for ( a = [ -1, +1 ] )
	tx( l/2*a ) tz( h / 2 ) ty( b/4 )
		cbox( t, b/2, t+h );

	ty( -b/2 ) tz( h / 2 )
		cbox( l/2, t, t+h );

intersection()
{
union()
{
for ( a = [ -1, +1 ] )
	tx( l/2*a ) tz( h + t / 2 ) ty( b/4 )
		rx( 90 )
			ccyl( d = t*2.5, h = b/2, $fn = 4 );

	ty( -b/2 ) tz( h + t / 2 )
		ry( 90 )
			ccyl( d = t*2.5, h = l/2, $fn = 4 );
}

cbox( l*2, b*2, h*2 + t*2 );
}

/// lazy.scad 1.1
/// a collection of useful macros for the lazy OpenSCAD programmer
/// http://www.thingiverse.com/thing:512443

// single axis translations
module tx( x ) translate( [ x, 0, 0 ] ) for(c=[0:$children-1])child(c);
module ty( y ) translate( [ 0, y, 0 ] ) for(c=[0:$children-1])child(c);
module tz( z ) translate( [ 0, 0, z ] ) for(c=[0:$children-1])child(c);

// 2d translations
module txy( x, y ) translate( [ x, y, 0 ] ) for(c=[0:$children-1])child(c);
module tyz( y, z ) translate( [ 0, y, z ] ) for(c=[0:$children-1])child(c);
module txz( x, z ) translate( [ x, 0, z ] ) for(c=[0:$children-1])child(c);

// 3d translation
module txyz( x, y, z ) translate( [ x, y, z ] ) for(c=[0:$children-1])child(c);

// single axis rotations
module rx( a ) rotate( [ a, 0, 0 ] ) for(c=[0:$children-1])child(c);
module ry( a ) rotate( [ 0, a, 0 ] ) for(c=[0:$children-1])child(c);
module rz( a ) rotate( [ 0, 0, a ] ) for(c=[0:$children-1])child(c);

// centered box (cube)
module cbox( x, y, z ) cube( [ x, y, z ], center = true );

// centered cylinder
module ccyl( d, h, d1, d2, r, r1, r2 )
 cylinder( h = h, r = ( d == undef ? r : d/2 ), r1 = ( d1 == undef ? r1 : d1/2 ), r2 = ( d2 == undef ? r2 : d2 / 2 ), center = true );

/// end lazy.scad

```


[User]
Okay, I need a design for a 1/2" NPT extension for my sprinkler system. I've been using those cheap plastic ones and they keep breaking, so I want something much sturdier that I can 3D print. I'm using OpenSCAD.

Basically, the design needs to have a 1/2" NPT female socket at the bottom, a cylindrical tube section in the middle, and a 1/2" NPT male thread at the top. I'd like to be able to specify the overall length of the extension, and the tube section should adjust to make that length. The female and male threaded parts I'm imagining are not designed from scratch, but rather pre-made STLs I can import.

So I need a parametric OpenSCAD file that lets me set the overall length in inches.  I'll call this `Length_in`.  I also need all of the relevant dimensions for the pipe. I think the 1/2" NPT thread has an outer diameter (OD) of 0.84 inches and an inner diameter (ID) of 0.622 inches.  The tube part should match these dimensions. The minimum `Length_in` should be 1.13 inches. I also need to make sure I'm calculating the length of the middle tube correctly.  I think the bottom socket is 16.7mm tall, and I need to figure out the height of the male socket from the .stl.

I'm thinking I'll also need to define the height of the socket, which I think is `socket_height=16.7`. The length of the tube should be `tube_length = Length - 28.4` mm. `Length` is `Length_in * 25.4`. The outer and inner diameters should be `OD = OD_in * 25.4` and `ID=ID_in * 25.4`, respectively.

I'm not sure exactly how to do the import and translate of the parts since I haven't done this before in OpenSCAD but I have pre-made .stl files for the male and female threads.  I will need to make sure to add a `difference` of two cylinders to create the hollow tube between the imported sockets.

Can you generate the necessary .scad file or files to make this work?

[Assistant]
parametric_0.5_in_NPT_extension.scad:
```
//1/2" NPT Exension
//Finch 10/22/14
//Threads created with DaveGadgeteer tapered thread library: http://www.thingiverse.com/thing:227192

// variable description

Length_in = 2;  //min = 1.13

/* [Hidden] */
//end of user inputs

OD_in = .84;
ID_in = .622;
OD = OD_in * 25.4;
ID = ID_in * 25.4;
Length = max(1.13*25.4,Length_in *25.4);

thin = .1;
tube_length =  Length - 28.4;
//tube_length = .25 * 25.4;
socket_height = 16.7;

//Make the part

//import precompiled stl of the bottom female socket
import("0.5 NPT Female Socket.stl");

//place the tube on top of the bottom male socket
translate([0,0,socket_height])
difference(){
	cylinder(h=tube_length,r=OD/2);
	cylinder(h=tube_length,r=ID/2);
}

//import and place the precompiled top male threaded tube
translate([0,0,socket_height+tube_length])
import("0.5 NPT Male Thread.stl");

```


[User]
Hey, I'm looking to create a heart-shaped design in OpenSCAD, kind of like a pendant or charm. I've got a basic idea, and I need some flexibility built-in.

The core of the design is an "inner heart," which is essentially a square with two circles attached at the top, creating the heart shape. I'd like to be able to adjust the size of this inner heart.

Then, I want an "outer heart" that's a slightly larger, thicker outline of the inner heart. It should be created by scaling up the inner heart, then subtracting the inner heart from it, and it should have a small amount of offset. It should also be scalable.

Finally, I need a small "bridge" piece that connects the two sides of the heart, basically a rotated rectangle that overlaps the top curves, allowing it to hold the whole thing together when fabricated. The bridge will also have parameters for size and rotation, and needs to be placed relative to the inner heart.

I want to be able to control these parameters from the top level:

*   `inner_heart_size`: Controls the size of the square used for the inner heart. The circles will always be half this size.
*  `height`: Controls the thickness/height of all the extruded shapes.
*   `outer_scale`: Controls how much the outer heart is scaled up compared to the inner heart.
*   `outer_offset`: Controls the amount the outer heart is offset relative to the inner heart.
* `bridge_size`: Controls the size of the bridge relative to inner heart size, as a multiplier
* `bridge_angle`: Controls the angle the bridge is rotated by

It would also be great if the code was parametric. So, you know, if I change the inner_heart_size all of the other stuff adjusts correctly. Make sure to use $fn for smoothness.

[Assistant]
heart.scad:
```
// paperclip (c)g3org 2014

//in mm
inner_heart_size=25;
//thickness
height=1.5;

$fn=50*1;

module inner_heart() {
	linear_extrude(height = height)
		{
			square(inner_heart_size,center=true);
			translate([0, inner_heart_size/2, 0])
			circle(inner_heart_size/2);
			translate([inner_heart_size/2, 0, 0])
			circle(inner_heart_size/2);
		}

}

module outer_heart(){
	scale([1.2,1.2]){
			difference(){
				translate([-0.5,-0.5,0]) scale([1.3,1.3]) inner_heart();
				inner_heart();
			}
	}
}

module bridge(){
	translate([inner_heart_size/2*1.1,inner_heart_size/2*1.1,0]) {
		rotate([0,0,45]) {
			linear_extrude(height = height) square([inner_heart_size/2,inner_heart_size],center=true);
		}
	}
}

bridge();
inner_heart();
outer_heart();

```


[User]
Alright, I'm looking to design a clip for my Kingston Data Traveler USB drive. It keeps pushing open in my pocket, and I need something to hold it in the closed position. I've got some measurements, and I'd like to be able to adjust these easily.

The basic design is a clip that wraps around the drive, with a gap in the middle to accommodate the sliding part. The outer dimensions of the drive are about 8.64 mm wide, 19.4 mm deep, and 12.99 mm tall, and I'd like the overall clip to be just a bit bigger than that. I guess I'd like the clip to overhang the edge of the sliding part by about 1.5mm on each side, and the walls of the clip should be about 1.44mm thick.

I'd like to make this parametric, so I can adjust the size for other flash drives in the future. It seems like it would make sense to have parameters for the height, width, depth, overhang, and thickness, like I did in my quick code snippet below. That was just a test, though, so I don't need it as part of the solution.

```
height = 12.99;
width = 8.64;
depth = 19.4;
overhang = 1.5;
thickness = 1.44;

translate ([0,0,height/2])
difference () {
cube ([width+2*thickness,depth+2*thickness,height],center=true);
cube ([width,depth,height+1],center=true);
translate ([width/2,0,0])
cube ([width,depth-overhang*2,height+1],center=true);
}
```

It would be great if the OpenSCAD file could use the BOSL2 library to help with the parametric design. I'm not picky about the exact implementation as long as it's adjustable and fairly simple to modify. Let me know if you have any questions!

[Assistant]
driveclip.scad:
```
height = 12.99;
width = 8.64;
depth = 19.4;
overhang = 1.5;
thickness = 1.44;

translate ([0,0,height/2])
difference () {
cube ([width+2*thickness,depth+2*thickness,height],center=true);
cube ([width,depth,height+1],center=true);
translate ([width/2,0,0])
cube ([width,depth-overhang*2,height+1],center=true);
}
```


[User]
Hey, I'm looking to create a customizable dual-tone whistle. I found a design online I really like, and I want to make something similar using OpenSCAD but with a focus on making all dimensions parametric. I can use the design description I have to give some key dimensions and describe the overall shape.

The whistle consists of two main cylindrical loops connected by a mouthpiece and a connecting block. The first loop, closest to the mouthpiece, has a diameter that I want to call `dia1`. The second loop has a smaller diameter called `dia2`. There's also a general `height` parameter for the overall whistle height. Inside each loop there is a hollowed-out space to help create the sound.

The mouthpiece connects to the first loop. It is mostly a rectangular shape that's slightly longer than the first loop's diameter. It overlaps with the first loop cylinder.

A block extends along the side of the first loop. It also has a hollowed-out space.

Then, there are two small channels and corresponding "add-on" shapes, called "hole1", "hole2", "add1", and "add2", which form the actual whistle mechanisms. These are cut out of the main body, using `difference()` statements.

I'd like to be able to control the diameters of the two loops (`dia1` and `dia2`), the overall height of the whistle (`height`), and also the resolution of the meshes (`mesh_resolution`).

So, the parameters I need are:

*   `dia1`: Diameter of the first loop (e.g., 54)
*   `dia2`: Diameter of the second loop (e.g., 34)
*   `height`: Overall height of the whistle (e.g., 14)
*  `mesh_resolution`: Mesh resolution (e.g., 50).

The structure is basically:
1. Build two cylinders and subtract smaller cylinders inside to form the main loops.
2. Build the mouthpiece as a rectangular block, subtracting a cylinder section from it.
3. Build the connecting block as a rectangular block.
4. Subtract another, slightly smaller set of similar loops and shapes from the model, creating a cavity inside.
5. Add the holes and "add-on" shapes to complete the design.

I want to create this in OpenSCAD and make sure everything is parametric. Could you generate that for me, please? I don't have any requirements about external libraries, just that the design is parametric using the parameters mentioned above.

[Assistant]
DuoToneWhistle_-_Customizable.scad:
```
/* Dual Tone Whistle - Customizable */
/* 2014-10-25 Roman Hegglin */

/* [Main Settings] */
//Diameter of the first loop
dia1=54;

//Diameter of the second loop
dia2=34;

//Height
height=14;

/* [Advanced Settings] */

// The mesh resolution

mesh_resolution=50; // [20:120]

$fn=mesh_resolution;

difference()
{
//translate([0,0,-3])
//body
union(){
//loop 1 near Mouthpiece
translate([0,dia1/2-3.5,0])
difference() {
cylinder(r=dia1/2, h=height,center=true);
cylinder(r=dia1/2-7, h=height+1,center=true);
}
//loop 2
translate([0,-dia2/2+3.5,0])
difference() {
cylinder(r=dia2/2, h=height,center=true);
cylinder(r=dia2/2-7, h=height+1,center=true);
}
//Mouthpiece
difference() {
translate([dia1/4,dia1/4*3-3.5,0])
cube(size = [dia1/2,dia1/2,height], center = true);
translate([0,dia1/2-3.5,0])
cylinder(r=dia1/2-7, h=height+1,center=true);
}

translate([(dia1/2+17)/2,dia1-7,0])
cube(size = [dia1/2+17,7,height], center = true);

}

//cavity
difference() {
union(){
//loop 1 near Mouthpiece
translate([0,dia1/2-3.5,0])
difference() {
cylinder(r=dia1/2-1, h=height-3,center=true);
cylinder(r=dia1/2-7+1, h=height+1-3,center=true);
}
//loop 2
translate([0,-dia2/2+3.5,0])
difference() {
cylinder(r=dia2/2-1, h=height-3,center=true);
cylinder(r=dia2/2-7+1, h=height+1-3,center=true);
}
//Mouthpiece
difference() {
translate([dia1/4,dia1/4*3-3.5,0])
cube(size = [dia1/2-2,dia1/2-2,height-3], center = true);
translate([0,dia1/2-3.5,0])
cylinder(r=dia1/2-7+1, h=height+1,center=true);
}

hole1 ();
hole2 ();

}
add1 ();
add2 ();
}
}

module hole1 ()
{
hull() {//blowcanal
translate([dia1/2+17,dia1-7,0])
cube(size = [0.1,5,height-3], center = true);

translate([dia1/2-2,dia1-7,0])
cube(size = [0.1,2,height-3], center = true);
}
}

module hole2 ()
{
hull() {//whislte hole
translate([dia1/2-7,dia1-3.5,0])
cube(size = [10,0.1,height-3], center = true);
translate([dia1/2-3,dia1-4-2,0])
cube(size = [2.5,0.1,height-3], center = true);
}
translate([dia1/2-3,dia1-5.5,0])
cube(size = [2.5,7-2,height-3], center = true);
}

module add1 ()
{
difference () {
hull() {
translate([dia1/4,dia1-3.5-1,0])
cube(size = [dia1/3,0.1,height-2], center = true);
translate([dia1/2-7,dia1-3.5-2.5,0])
cube(size = [7.5,0.1,height-2], center = true);
}
hole2 ();
}
}

module add2 ()
{
difference () {
translate([dia1/2-1.5,dia1-7,0])
cube(size = [1,7,height-2], center = true);

hole1 ();
}
}

```


[User]
Hey, I'm working on a design for an electrolysis cell and I need a gas separation grid. I have an existing OpenSCAD file that does something similar, but I'd like to have a more flexible, parametric design and I'm not that great at OpenSCAD myself.

The core concept is a grid made of angled lamellas that form a herringbone pattern when two halves are placed back-to-back. This prevents gas mixing between the two sides. The grid should also include support structures that allow the separated gasses to rise to the top. I'd like the design to allow for an optional slide-in rim, or a flat side, for viewing.

Here are the specifics I would like for the design:

**Overall Structure:**

*   The design will be for a single half of the grid. The user should be able to easily mirror/duplicate it to create a full grid.
*   The grid should have a customizable width (`w`) and height (`h`) that excludes the slide-in rim if it is used.
*   The angle of the lamellas (the angle of the herringbone) should be customizable (`angle`). 0 degrees should create a grid with no angle.

**Herringbone Lamellas:**

*   The thickness of each lamella (`s2`, the half-thickness of a lamella) should be adjustable.
*   The thickness of the "ribs" making up the lamellas should be adjustable (`trib`).
*   The gap between ribs (`tgap`) should also be adjustable.
*   The number of lamellas should be calculated automatically based on the height of the grid and the thickness/spacing of the ribs.
*   The lamella height is defined by the number of lamellas.

**Connector Spacer Bars:**

*   There should be vertical connector bars to provide structural integrity, and these should be customizable.
*   Thickness of connector bars (`tconn`).
*   Distance between the connector bars (`aconn`).
*   The space for gas bubbles to rise (`tbubble`) should be adjustable and offset from the lamella.
*   The offset of the first connector bar from the left edge (`shiftconn`) should be customizable.
*   The number of connector bars should be calculated automatically based on the height of the grid and the spacing between them.

**Slide-in Rim (Optional):**

*   The grid should have the option of a slide-in rim for securing it in an enclosure, or a flat side that does not extend to the edges of the grid.
*   The thickness of the slide-in rim (`tslidein`) and the depth it extends out from the grid (`sslidein`) should be customizable. If the slide-in rim is not used, the grid should have a flat profile.

**Other:**
* There should be a small tolerance to ensure that the slide-in rim does not create a tight fit, specified by a variable named `eps`.
*   I don't need any specific library functions for this design. I'd prefer it be written using just the standard OpenSCAD language.
*  It should be easy to select between a full symmetrical design, or left/right versions for mirroring later. The user should select the output via a `part` parameter which takes `"left"`, `"right"`, and `"symmetrical"` as strings.

Essentially, I want a flexible, parametric OpenSCAD file that generates this gas separation grid. The design should be easily adjustable for different experimental setups. Thanks!

[Assistant]
electrolysis_gas_seperation_fishbone_lamella_grid_1.scad:
```

// date: 2014
// author: Lukas Süss aka mechadense
// license: CC BY
// title: customizable fishbone lamella gas seperation grid for electrolysis

/*

This is a halve grid for gas separation in an electrolysis apparatus.
When two (mirrored versions) of these are put together back on back the lamellas form herringbone shapes. This disallows the gasses to pass from one side to the other and mix.
In a concrete application a gas separation wall must be extended upwards and the fluid level must be always kept above the grid.

Standalone this thing is incomplete. An electrolysis chamber capable of gas separation is needed in conjunction. It might be a good idea to design the gas splitter top as one piece print with mainly diagonal surfaces to archive maximum gas tightness.

pros & cons:
+ no separation membranes (filterpaper / 0.1mm mesh fine lye resistant textiles) needed
+ if separation membranes are used nonetheless they are mechanically stabilized by the grid
- more distance between the plates (resistive losses) more electrolyte needed
- less water cross section between plates

Some data randomly found on the net (no guarantee of correctness):
* 1.5mm to (2.0mm) for bubble-flow needed
* keep current below 85mA/cm^2 of plate area
* try to archive 2V voltage drop per plate
* => six plates in series are useful:
connect only the outermost two for 12V operation and
connect only the second from outermost for for 9V operation

One side can be made to have no slide-in border so that one can look in when a transparent window is glued onto the chamber.

*/

/* [main] */

// grid width without slidein rim
w = 40;
// grid height without slidein rim
h = 40;

angle = 45; // 0° no arrow shape
// halve fishbone lamella thickness

part = "symmetrical"; //[left,right,symmetrical]

/* [halve herringbone] */

// halve herringbone thickness
s2 = 2;
sft = s2/tan(angle);

// rib thickness
trib = 1;
// gap size between ribs
tgap = 0.75;

t1 = trib/sin(angle);
t2 = tgap/sin(angle);

// number of lamellas
n = floor(h/(t1+t2))-1; // -1 ... good working hack
heff = (n-1)*(t1+t2)+sft;

/* [connector spacer bars] */

// thickness of connector bars
tconn = 1;
// distance between connector bars
aconn = 10;
// space for gas bubbles to rise up
tbubble = 1.5;
// offset for the first connector bar
shiftconn = 4.5;
nconn = floor(h/aconn);

/* [slidein rim] */

// thickness of slidein rim - countergrooves must be more than double that wide (herringbonehalve - optional filterpaper - herringbonehavle)
tslidein = 1;
// depth of slidein rim - how far it goes in
sslidein = 1;

eps = 0.05*1;

// ###############

// size estimation cube
//translate([0,0,20])cube([10,10,10]);

part();

module part()
{
  if(part=="left") {translate([-w/2,0,0]) halvegrid("no");}
  if(part=="right") {translate([+w/2,0,0]) scale([-1,1,1]) halvegrid("no");}
  if(part=="symmetrical") {translate([-w/2,0,0]) halvegrid("yes");}

}

//

module halvegrid(slidein="yes")
{

for(i=[0:n-1])
{
  translate([0,i*(t1+t2),0])
  scale([1,1,-1])rotate(+90,[0,1,0])
  linear_extrude(height=w)
  polygon(points=[[0,0],[0,t1],[s2,t1+sft],[s2,sft]], paths=[[0,1,2,3]]);
}

for(i=[0:nconn-1])
{
  translate([aconn*i+shiftconn,0,0])
  cube([tconn,h,s2+tbubble]);
}

//bottom end
cube([w,t1,s2+tbubble]);
// top end
translate([0,heff,-0.1*0])
cube([w,t1,s2]);

difference()
{
  // sicrumdference slidein ring
  if(slidein=="no")
  {
    translate([-sslidein,-sslidein,0])
      color("orange") cube([w+sslidein-eps,h+sslidein*2,tslidein]);
  }
  else
  {
    translate([-sslidein,-sslidein,0])
      color("orange") cube([w+sslidein*2,h+sslidein*2,tslidein]);
  }

  translate([eps,eps,-1])
    cube([w,heff,tslidein+3]);
}
}

```


[User]
I need a parametric OpenSCAD design for a desk hook, specifically for holding a Dremel tool. The design needs to clamp onto the edge of a desk, and the parameters I want to be able to control are the desk thickness, the clip width for the desk clamp, and the diameter of the opening that holds the Dremel. The Dremel opening should have a bit of a rounded shape for easy insertion and removal, but should be snug enough to hold the tool securely.

The desk clamp should be able to accommodate a range of desk thicknesses. The clamp should have a flat section that rests against the underside of the desk.

I'm not sure about the best way to get the rounded part for the Dremel holder, but I like the general shape and approach used in the attached example, which has a difference of hulls creating a rounded cavity. Also like the way the desk clamp is made of two cylinders that form the sides of the clamp. I'd like to be able to adjust those cylinder radii. I think that should be in the main scad file along with the parameter definitions.

Can you please generate an OpenSCAD design that meets these requirements?

[Assistant]
dremelhook.scad:
```
$fn = 50*1;
//Desk thikness
desk_thikness = 32.8;
//Clip width
clip_width = 12;

difference(){
	union(){
		cube([desk_thikness+8,27,clip_width]);
		hull(){
			translate([0,27,3]) rotate ([0,90,0]) cylinder(desk_thikness+8,r=3);
			translate([0,27,clip_width-3]) rotate ([0,90,0]) cylinder(desk_thikness+8,r=3);
		}
	}
		translate([4,4,0]) cube([desk_thikness,27,clip_width]);
}

difference() {
	hull(){
			cube([0.1,20,clip_width]);
			translate([-9,5,clip_width/2]) cylinder(clip_width,r = 10,center = true);
		}
	translate([-9,5,0]) cylinder(clip_width,r = 6);
	linear_extrude(clip_width){
		translate([-9,5,0]) polygon([[9,-5],[6, 0],[0, -6],[0, -10],[0, -6],[9, -10]]);}

}
difference(){
	hull(){
		translate([-9,-1,clip_width-3]) rotate ([90,0,0]) cylinder(4,r=3);
		translate([-9,-1,3]) rotate ([90,0,0]) cylinder(4,r=3);
	}
	translate([-12,-1,0]) rotate ([90,0,0]) cube([2.9,clip_width,5]);
}
```


[User]
Okay, I'm looking to design an end cap for an antenna mast, with a few specific features. I need to be able to easily adjust the dimensions, so I'd like a parametric OpenSCAD design.

Here's what I need:

The basic shape is a hollow cylinder, basically a short tube. I'll need parameters for:

*   `tube_outer`: The outer diameter of the tube.
*   `tube_wall`: The thickness of the tube's wall.
*   `material_wall`: A dimension for the gap between the outer part of the design and the inner "inlay", as well as for some other features.
*   `height`: The overall height of the tube.
*   `hole`: The diameter of a hole that goes through the side of the tube, parallel to the main cylinder axis, but offset so it's not centered.

The design should have these specific features:

1.  **Outer Shell:** The main outer shape of the part, a cylinder with diameter `tube_outer` and height `height`. The outer edges of this shape should have a slightly extended rim using `material_wall`. This rim should be a "hull" around the main tube at both ends and around the hole.
2.  **Inner Inlay:** There's an inner cylinder with a diameter slightly smaller than the outer tube, and this inner part doesn't extend to the full height of the outer shell. This inner cylinder has a diameter of `tube_outer - 2*tube_wall`. It should have an extended section that goes to the height of the outer shell. The main part of the inlay should have a hollow space where this would create a gap between the tube and inlay. This inner section should have a matching hole as the outer shell but with the offset adjusted to keep the `material_wall` space. This inlay should be inset a distance of `material_wall` on the bottom and top of the design.
3.  **Side Hole:** There's a hole that goes all the way through the side, with a diameter of `hole`, and offset from the center. It should create a path for a cable through the main tube. It should have the same material rim as the main cylinder.
4.  **Through Cutout:** There should be a rectangular cutout that runs lengthwise through the tube and through the hollow space between the outer shell and the inlay, with parameters based on `tube_wall` and `material_wall`.

I would also need the design to be easily adjustable based on the parameters I listed above. It would be great if you could generate a complete, single .scad file for this. I don't have any specific library requirements.

[Assistant]
tube02.scad:
```
// Antenna tube End
// (c) g3org

//antenna tube
tube_outer=48.5;

//wall
tube_wall=4.1;

//material between sectors
material_wall=2;

//object height
height=10;

//frint hole
hole=20;

$fn=40*1;

//Aussenkontur
module aussenkontur(){
	hull(){
		cylinder(r=tube_outer/2+material_wall,h=1);
		translate([tube_outer/2,0,0]) cylinder(r=hole/2,h=1);
		translate([0,0,height+1]) cylinder(r=tube_outer/2+material_wall,h=1);
	}

}

module innenkontur(){
	hull(){
		cylinder(r=tube_outer/2,h=1);
		translate([tube_outer/2-material_wall,0,0]) cylinder(r=hole/2,h=1);
		translate([0,0,height]) cylinder(r=tube_outer/2,h=1);
	}

}

module inlay(){
difference(){
		cylinder(r=tube_outer/2-tube_wall,h=height+1);
		cylinder(r=tube_outer/2-tube_wall-material_wall,h=height+1);
		}
}

module topside(){
		translate([0,0,height-material_wall]){
			cylinder(r=tube_outer/2,h=material_wall);
		}

}
module durchbruch(){
	translate([material_wall,0,+height/2]){
		cube ([tube_outer-2*tube_wall-2*material_wall,4*tube_wall,height],center=true);
	}

}

difference(){
	aussenkontur();
	innenkontur();
}

difference(){
	inlay();
	durchbruch();
}
//topside();
//durchbruch();

//testtube();

module testtube(){
	difference(){
		cylinder(r=tube_outer/2,h=2*height);
		cylinder(r=tube_outer/2-tube_wall,h=2*height);
	}
}

```


[User]
I need a parametric OpenSCAD design for a dollhouse shower. I've already created one, but it's not as flexible as I'd like, and I want to be able to easily change the dimensions.

Here's what I'm looking for:

*   **Overall Shape:** The shower should be a box with rounded corners.
*   **Parametric Height:**  I need to be able to specify the overall height of the shower, and all other dimensions should scale accordingly. For example, I'd like to set the height to 80mm, but also be able to easily change it to 100mm and the whole thing scales with it.
*   **Wall Thickness:** There should be a consistent wall thickness. I'm thinking around 1/10th of the overall height would work well for the walls.
*   **Internal Space:**  The inside of the shower needs to be hollowed out, leaving a wall thickness, but also need a floor with a drain and a ceiling.
*   **Door:** There should be an opening on the front face to act as the shower door. I don't want to deal with moving parts, so a simple opening that scales with the height is perfect.
*   **Nozzle:** I want a simple, angled shower nozzle. It doesn't need to be too fancy. Just something that suggests a nozzle.
*   **Handles:** I'd like two small handles on the wall below the nozzle. Simple knobs or small spheres for the handles would be great.
*   **Drain:** There should be a drain in the center of the floor, consisting of some simple raised bars.
*   **Corner Radius:** The corners need to be rounded; I'd prefer that the radius scale with the overall height.
*   **Libraries:** I'm familiar with the `MCAD/boxes.scad` library, but you can use anything you think would be best for this design.

I'd like a separate module for each component - the shower box itself, the nozzle, the handles, and the drain. That way it is easier to adjust and modify later. I also want the main module to rotate it along the X axis so it is positioned correctly. Also add some echos to show the values being used.

[Assistant]
Doll_House_Shower_printout.scad:
```
///////////////////////////////////////////////////////////////////////////////
/////////////////////////// Doll House Shower //////////////////////////////////
/*/////////////////////////////////////////////////////////////////////////////
date started: 10/22/2014
date finished:
modeler:
copyright:		N/A
comments:		For Katie's school project
*////////////////////////////////////////////////////////////////////////////////
/////////////////////////// - Paramaters - ////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
//$fn=50;
use <MCAD/boxes.scad>;
// height = 80; // 80mm

// How tall should the shower be in mm? [10:145] All other measurements and dimensions will auto-adjust.
height = 80; // [10:145]

////////////// math //////// - Don't Change - //////////////// math ////////////
width = height/1.6; // 1.6
length = height/(1.6*2); // 3.0
wall = height/10; // 10
corner_rad = height/32; // 2.5mm
///////////////////////////////////////////////////////////////////////////////
//////////////////////////// - Renders - //////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
rotate([-90,0,0])
//rotate([-00,0,0])
{
	shower_box();
	nozzle();
	handle();
	drain();
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////// - Modules - /////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
module shower_box()
{
	difference()
	{
		roundedBox([width, length, height], corner_rad, false);
		translate([0,-wall/2,0]) roundedBox([width-wall, length, height-wall], corner_rad, false);
		translate([0,wall/2,-(height/2)-wall/2]) cylinder(h = wall*2, r=corner_rad*1.6);
		translate([width/2,0,-((height/4)-(wall/4))]) roundedBox([wall*2, (length-wall*1.6), ((height-(wall+wall))/2)], corner_rad, false); // ** (2) // ** (1)
		translate([width/2,0,((height/4)-(wall/4))]) roundedBox([wall*2, (length-wall*1.6), ((height-(wall+wall))/2)], corner_rad, false); // ** (2) // ** (1)
		translate([-width/2,0,-((height/4)-(wall/4))]) roundedBox([wall*2, (length-wall*1.6), ((height-(wall+wall))/2)], corner_rad, false); // ** (2) // ** (1)
		translate([-width/2,0,((height/4)-(wall/4))]) roundedBox([wall*2, (length-wall*1.6), ((height-(wall+wall))/2)], corner_rad, false); // ** (2) // ** (1)
		translate([0,0,height/2]) roundedBox([width-wall*1.6, length-wall*1.6, wall*2], corner_rad, false);
	}
}
///////////////////////////////////////////////////////////////////////////////
module nozzle()
{
	translate([0,0,height/4]) rotate([-45,00,0]) cylinder(h=wall*2, r=corner_rad/1.6);
	translate([0,-(((wall*2)-(wall/4)/sin(90))*sin(45))/2,height/4-(corner_rad*2)]) rotate([-45,00,0]) cylinder(h=wall, r2=corner_rad/1.6, r1=(corner_rad/1.6)*2.5);
}
///////////////////////////////////////////////////////////////////////////////
module handle()
{
	translate([height/15,length/4.8,height/15])
	{
		rotate([-90,0,0])
		{
			cylinder(h=wall/1.6, r=corner_rad/1.6);
			sphere(r = corner_rad);
		}
	}

	translate([-height/15,length/4.8,height/15])
	{
		rotate([-90,0,0])
		{
			cylinder(h=wall/1.6, r=corner_rad/1.6);
			sphere(r = corner_rad);
		}
	}

}
///////////////////////////////////////////////////////////////////////////////
module drain()
{
	for ( i = [1 : 3] )
	{
		translate([0,wall/2,-(height/2)+wall/2.5])
		rotate( [0, 0, i * 360 / 3])
	    cube([corner_rad*4,corner_rad/2,corner_rad/2],center=true);
	}
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////// - Echos - ///////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
echo(" -- /////////////////////////////////////// --");
echo("$fn //Resolution = ",$fn); //Resolution
//echo(" = ", ); //Description
echo("height = ",height );
echo("corner_rad = ",corner_rad );
echo("width = ",width );
echo("length = ",length );
echo("wall = ",wall," -actually is half this value as the equations in the code divide it by 2 =",wall/2);
//echo("(height-wall*1.6)/corner_rad+5 = ",(height-wall*1.6)/corner_rad+5," ** (1)");
echo("height*0.3985 = ",height*0.3985," ** (2)");
echo("(length-wall*1.6) = ",(length-wall*1.6));
echo("((height-(wall+wall))/2) = ",((height-(wall+wall))/2) );
echo("(-height/(height*0.053125)) = ",(-height/(height*0.053125)) );
echo("((height/4)-(wall/4)) = ",((height/4)-(wall/4)) );
echo("length/29 = ",length/29 );
echo("corner_rad/1.6 = ",corner_rad/1.6 );
echo("-(corner_rad*2) = ",-(corner_rad*2) );
echo("(wall*2)-(wall/2) = ",(wall*2)-(wall/2) );
echo("-(((wall*2)-(wall/4)/sin(90))*sin(45))/2 = ",-(((wall*2)-(wall/4)/sin(90))*sin(45))/2 );
echo("height/4-(corner_rad*2) = ",height/4-(corner_rad*2) );
echo("length/(corner_rad*corner_rad) = ",length/(corner_rad*corner_rad) );
echo("-(height/2)+wall/3.12+.5 = ",-(height/2)+wall/3.12+.5 );
echo("-(height/2)+wall/2.5 = ",-(height/2)+wall/2.5 );
echo(" -- /////////////////////////////////////// --");
echo("clip - ([0,0,0])");
echo("clip - translate([0,0,0]){");
echo("clip - rotate([0,0,0]){");
//echo ("This is ",number,3," and that's it.");
echo(" -- /////////////////////////////////////// --");
///////////////////////////////////////////////////////////////////////////////
////////////////////////////// - Clip_Pad - ///////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
//	([0,0,0])
//	translate([0,0,0]){
//	rotate([0,0,0]){
//
//  -- Golden Rule of 1.6
//
// roundedBox([width, height, depth], float radius, bool sidesonly);
// EXAMPLE USAGE:
// roundedBox([20, 30, 40], 5, true);
// size is a vector [w, h, d]
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
```


[User]
I need a parametric OpenSCAD design for a replacement foot for a plastic storage shelf. I want the foot to have a few key features:

1.  **A Main Tube Body:** This is the primary structural part of the foot and will have a specified outer diameter and wall thickness. The top portion of this tube needs a thinner wall to fit inside the existing shelf tubes.
2.  **A Foot:** This wider base at the bottom of the tube will provide stability. It will have a larger diameter than the main tube body and a short height to allow for the transition. It will have a central hole to reduce the amount of material used. The foot should transition smoothly into the main tube body.
3.  **Friction Lines:** Near the top of the main tube body, I need vertical lines that will provide friction when inserted into the shelf tubes. These lines will have a specified height, width, depth, and offset from the top of the tube. There should be two of these, rotated 90 degrees from each other.

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

*   `total_height`: The total height of the foot.
*   `shell_width`: The wall thickness of the main tube body.
*   `top_shell_width`: The wall thickness of the top of the main tube body designed to fit into an existing tube.
*   `outer_diameter`: The outer diameter of the main tube body.
*   `foot_diameter`: The diameter of the foot.
*   `foot_relief_height`: The height of the foot itself.
*   `foot_hole_diameter`: The diameter of the hole in the bottom of the foot.
*   `friction_line_height`: The height of the vertical friction lines.
*   `friction_line_width`: The width of the vertical friction lines.
*   `friction_line_depth`: The depth of the vertical friction lines.
*   `friction_line_top_offset`: The offset of the top of the vertical friction lines from the top of the main tube.

I want this design to be fully parametric, so I can easily adjust the size and dimensions to fit different shelves. I'd also like the design to be relatively simple, to keep print times low. I'd prefer to avoid using any external libraries. Could you generate the necessary OpenSCAD code for this?

[Assistant]
custom_shelf_tube_foot.scad:
```

/* [Tube Foot] */

// original 66.5, new 141.5
total_height_text_box = 141.5;

// Thickness of the main tube body
shell_width = 2;

// Tube thickness to accept the tube above it, the rest of the tube can be thicker
top_shell_width = 1.5;

// Diameter of the outside of the tube
outer_diameter_textbox = 41.75;

// Foot diameter, make it bigger to spread the weight.
foot_diameter_text_box = 51.5;

// Hight of the foot relief
foot_relief_height_text_box = 10;

// Hole diameter at bottom of foot
foot_hole_diameter_text_box = 25;

// Vertical line length
friction_line_height_text_box = 30;

// Width of vertical friction line
friction_line_width_text_box = 1;

// Depth of vertical friction line, increase for more friction
friction_line_depth_text_box = 0.25;

// offset of vertical friction line
friction_line_top_offset_text_box = 4.5;

main_height_text_box = total_height_text_box - foot_relief_height_text_box;

top_innertube_height = friction_line_height_text_box + 2*friction_line_top_offset_text_box;

module build_tube(){
    difference(){
        union(){

            // Full tube
            translate([0, 0, foot_relief_height_text_box]) cylinder(main_height_text_box, r=outer_diameter_textbox/2, center=false);

            // Fiction line
            translate([0, 0, foot_relief_height_text_box + main_height_text_box - friction_line_top_offset_text_box - friction_line_height_text_box/2]) cube([friction_line_width_text_box, outer_diameter_textbox + 2*friction_line_depth_text_box, friction_line_height_text_box], center=true);

            // Fiction line
            rotate([0,0,90]) translate([0, 0, foot_relief_height_text_box + main_height_text_box - friction_line_top_offset_text_box - friction_line_height_text_box/2]) cube([friction_line_width_text_box, outer_diameter_textbox + 2*friction_line_depth_text_box, friction_line_height_text_box], center=true);

            // Main foot
            cylinder(foot_relief_height_text_box, r1=foot_diameter_text_box/2, r2=outer_diameter_textbox/2, center=false);

        }

        // Make top part of tube correct shell width to fit with original parts
        translate([0, 0, foot_relief_height_text_box + main_height_text_box - top_innertube_height]) cylinder(top_innertube_height, r=(outer_diameter_textbox - 2*top_shell_width)/2, center=false);

        // Hollow part of tube
        translate([0, 0, shell_width]) cylinder(main_height_text_box + foot_relief_height_text_box, r= (outer_diameter_textbox - 2*shell_width)/2, center=false);

        // Bottom foot hole
        cylinder(foot_relief_height_text_box * 3, r=foot_hole_diameter_text_box/2, center=true);

    }
}

build_tube();

```


[User]
Hi, I'm looking to generate a customizable mesh structure in OpenSCAD. I'm thinking along the lines of a 3D printable mesh that I can use to experiment with different grip patterns, potentially for use with flexible materials like Oogoo.

Here’s what I need:

**Basic Structure:**

*   The mesh should consist of cylindrical bars arranged in a grid pattern, with alternating layers running in perpendicular directions (e.g., one layer of bars running along the x-axis, the next along the y-axis, then back to the x-axis, and so on).
*   The mesh needs to have a base that acts as a foundation for the cylindrical bars (basically, a flat rectangle one layer thick at the bottom).
*   I need to be able to control the spacing between the bars in each layer, and the vertical spacing between the layers.
*  The cylindrical bars should have a circular cross section.

**Parameters that need to be customizable:**

*   `spacing`: Distance between the cylindrical bars within each layer.
*   `vspacing`: Vertical distance between the layers of bars.
*   `d`: Diameter of the cylindrical bars.
*   `width`: Width of the overall mesh area (along the x-axis).
*   `depth`: Depth of the overall mesh area (along the y-axis).
*   `height`: Overall height of the mesh structure (along the z-axis).
*   `$fn`: A parameter for smooth cylinders, probably should be set to 8 for the cylinder.

**Output:**

*   I need a single OpenSCAD file (`mesh.scad`) that generates the described mesh structure.
*   The parameters should be defined at the top of the file so that it is easy to adjust them.
*   I want the origin point of the mesh at the corner of the bottom base. The base should be placed at z=0.

I think that’s about it. Let me know if you need any more details!

[Assistant]
Mesh.scad:
```
// Spacing between bars
spacing = 2;
// Vertical spacing between layers
vspacing = .7;
// Diameter of bars
d = 1;
// Width of mesh area (x)
width = 30;
// Depth of mesh area (y)
depth = 30;
// Height of mesh area (z)
height = 4;

for (z=[0:vspacing*2:height]) {
for (x=[0:spacing:width])
	translate([x,0,z]) rotate([-90,0,0]) rotate([0,0,360/16]) cylinder(r=d/2, h=depth, $fn=8);
for (y=[0:spacing:depth])
	translate([0,y,vspacing+z]) rotate([0,90,0]) rotate([0,0,360/16]) cylinder(r=d/2, h=width, $fn=8);
}
translate([0,0,-vspacing])
	cube([width,depth,vspacing]);
```


[User]
I'd like to design a snowman in OpenSCAD, and I'm thinking it should have a few customizable options.

First, I want to be able to adjust the overall height of the snowman. I'd also like to choose which parts of the snowman are rendered, like just the hat, just the middle and top snowballs, just the bottom one, a fully assembled snowman, or an exploded view for 3D printing. I also want a 'printable' view where the individual parts are placed in an orientation suitable for printing. I don't have a particular printer in mind, but a standard FDM printer would be good.

The snowman itself should have three snowballs stacked on top of each other. The bottom snowball should be the largest, the middle one slightly smaller, and the top one the smallest. I want a basic top hat on its head. For facial features, I want a carrot nose, eyes, and a smile made of small cylinders.

The snowman should also have twig arms. The arms shouldn't be straight sticks, but should be slightly angled and have a few small branches at the end. Finally, I want to include three triangular buttons down the middle of the snowman.

For colors, I’d like to have the snowballs be white, the buttons a dark red, the nose dark orange, the eyes and mouth black, the arms a brown, and the hat grey with an indigo band.

It's important that it's parametric; everything should scale reasonably with the overall height adjustment.

I'm not planning on using any specific libraries, but I'm open to suggestions if you think it will help. I'm mostly just looking for a simple and clean design that's customizable and easy to print.

[Assistant]
Simple_Snowman.scad:
```
//HR Snowman

// BEGIN CUSTOMIZER

/* [Snowman Parameters] */

//Draft for preview, production for final
Render_Quality = 20; 	// [25:Draft, 50:Production]

//height of entire snowman(mm)
object_height = 90; //  [80:100]

//select parts to render
parts_to_render = 4; // [1:hat, 2:middle_snowballs, 3:bottom_snowball, 4:preview_assembled, 5:preview_exploded, 6:preview_printable]

// END CUSTOMIZER

$fn=Render_Quality;
scalingFactor = (object_height/94);
scale([scalingFactor, scalingFactor, scalingFactor]){
	if(parts_to_render == 1){
		 hat();
	}
	if(parts_to_render == 2){
		middleBack();
		middleFront();
	}
	if(parts_to_render == 3){
		 bottom();
	}
	if(parts_to_render == 4){
		model();
	}
	if(parts_to_render ==5){
		translate([0, 0, -2]) bottom();
		translate([0,0,5]) middleBack();
		translate([0,0,5]) middleFront();
		translate([0,0, 10]) hat();
	}
	if(parts_to_render ==6){
		split();
	}
}

//split();

//orients the four pieces correctly and to the x-axis
module split() {
	translate([-80, 0,47]) bottom();
	translate([-40,0,-1]) rotate([90,0,90]) middleBack();
	translate([40,0,1]) rotate([-90,0,90]) middleFront();
	translate([80,0,-31.95]) hat();
}

//lower sphere
module bottom(){
	difference(){
		model();
		translate([0,0, 20]) cube([60, 60,61.7], center = true);
	}
}

//back half of the middle and top spheres
module middleBack(){
	difference(){
		model();
		bottom();
		translate([0,0, 59.5]) cube([50,50, 55], center = true);
		translate([0, -10, 0]) cube([60, 22, 70], center = true);
	}
}

//front half of the middle and top spheres
module middleFront(){
	difference(){
		model();
		bottom();
		translate([0,0, 59.5]) cube([50,50, 55], center = true);
		translate([0, 10, 0]) cube([60, 18, 70], center = true);
	}
}

//top hat
module hat(){
	difference(){
		model();
		translate([0, 0, -23]) cube([60, 60, 110], center = true);
	}
}

//original model of the snowman
module model() {

//variables for smile
	smilex = -2.3;
	smiley = -0;
	smilez = .6;

//snow balls
	union(){
	//buttons

	if(parts_to_render != 1 && parts_to_render != 3 && parts_to_render != 5){
		for(y=[-1:1]){
		color("mediumvioletred")
	polyhedron(points=[ [0,-13.5+abs(y)*.5,2+4*y], [-2,-13.5+abs(y)*.5,-1+4*y], [2,-13.5+abs(y)*.5,-1+4*y], [0,-15.5+abs(y)*.5,2+4*y], [-2,-15.5+abs(y)*.5,-1+4*y], [2,-15.5+abs(y)*.5,-1+4*y]],
faces = [[0,1,2], [3,5,4], [1,4,5], [1,5,2], [1,0,3], [4,1,3], [0,5,3], [0,2,5]]);
		}
	}

		//middle ball
		color("white" )sphere(r = 15, center=true);

		//bottom ball
		difference(){
			color("white") translate([0,0,-29]) sphere(r=21, center = true);
			color("white") translate([0,0, -51]) cube([35,35,8], center = true);
		}

		//top ball
		color("white") translate([0,0,22]) sphere(r=12, center = true);

	}

//nose
	translate([0, -14, 23]) rotate([-90,0,0]) color("darkorange") cylinder(h = 10, r1 = .1, r2 = 3, center = true);

//eyes
	color("black") minkowski(){
		translate([4, -10.5, 27]) cube(1,1,1);
		rotate([-90, 0, 0]) cylinder(r=1,1.7);
	}
	color("black") minkowski(){
		translate([-5, -10.5, 27]) cube(1,1,1);
		rotate([-90, 0, 0]) cylinder(r=1,1.7);
	}

//smile
	for(x= [-3:3]){
		color("black") minkowski(){
			translate([smilex*x-.35, smiley*abs(x)-10.75, smilez*x*x+15]) cube(.7,.7,.7);
			rotate([-90, 0, 0]) cylinder(r=.7,.7);
		}
	}

//arms
//right
	color("saddlebrown") union(){
		translate([20, 0,2.8]) rotate([0,70,0]) cylinder(18, r=2.1, r=1, center = true);
		translate([24, 0, 4.5]) rotate([0,40,0]) cylinder(4, r1=1, r2=.8);
		translate([23.7,0, 4]) rotate([0,100,0]) cylinder(4, r1=1, r2 = .8);
	}
//left
	color("saddlebrown") union(){
		translate([-20, 0,2.8]) rotate([0,-70,0]) cylinder(18, r=2.1, r=1, center = true);
		translate([-24, 0, 4.5]) rotate([0,-40,0]) cylinder(4, r1=1, r2=.8);
		translate([-23.7,0, 4]) rotate([0,-100,0]) cylinder(4, r1=1, r2 = .8);
	}

//hat
	color("grey") translate([0,0, 33]) cylinder(13, r= 8);
	color("grey") translate([0,0, 32]) cylinder(2, r=12);
	color("indigo") translate([0,0,33]) cylinder(4, r=8.1);
}

```


[User]
I need a parametric design for a shelf hook, something I can easily adjust for different shelf and hook dimensions. I've seen a basic model, but I'd like a cleaner, more robust version with a few specific features.

Here are the parameters I'm looking to control:

*   **General Thickness:** The overall thickness of the hook material (let's call this `material_thickness`).
*   **Hook Width:** The width of the hook (let's call this `hook_width`).
*   **Shelf Thickness:** The thickness of the shelf that the hook will grab onto (`shelf_thickness`).
*   **Shelf Deepness/Leg Length:** How far the hook extends along the bottom of the shelf (`shelf_deepness`).
*   **Hook Height:** The height of the hook's vertical leg (`hook_height`).
*   **Hook Deepness/Leg Length:** The length of the hook's horizontal part that actually holds the object being hung, (`hook_deepness`).

I'd like the design to be composed of rectangular prisms. Starting at the top, the first prism should form the bottom of the shelf grab. It should extend along the shelf's deepness plus the material thickness. A vertical prism extends down from this section to cover the shelf's height plus twice the material thickness. Then, another horizontal prism comes off this vertical one, which extends along the deepness of the shelf hook. Finally, one more vertical prism extends down from that horizontal one to form the vertical part of the actual hook. A horizontal section at the bottom, that is where the hooked object will rest, completes the shape.

The corner between the horizontal sections and the vertical sections should be square. Finally, I'd like a very small vertical support element at the very end of the hook, at the corner of the last two prisms.

Could you generate an OpenSCAD file for this?

[Assistant]
shelf-hook.scad:
```
// preview[view:north west, tilt:top diagonal]

/* [General] */
// How thick should be the hook itself ?
thickness = 5; // [1:100]
// What should be the width of the hook ?
width = 10; // [1:100]

/* [Shelf] */
// How thick is the shelf ?
shelf_height = 20; // [1:100]
// How long should be the shelf leg ?
shelf_deepness = 30; // [1:100]

/* [Hook] */
// How height of the hook leg ?
hook_height = 20; // [1:100]
// How long should be the hook leg ?
hook_deepness = 30; // [1:100]

union(){
//  ___
  cube([shelf_deepness+thickness,thickness,width]);
//  ___
//  |
  translate([shelf_deepness,0,0])
    cube([thickness,shelf_height +  2*thickness,width]);

//  ___
//  |
//  ---
  translate([shelf_deepness,shelf_height + thickness,width])
    rotate([0,180,0])
      cube([shelf_deepness, thickness,width]);
//  ___
//  |
//  ---
//    |
  translate([0,shelf_height+thickness,0])
      cube([thickness,hook_height+2*thickness,width]);
//  ___
//  |
//  ---
//     |
//  ---
  translate([thickness,shelf_height+hook_height+2*thickness,0])
    cube([hook_deepness,thickness,width]);

//  ___
//  |
//  ---
//     |
//  |---

  translate([hook_deepness,shelf_height+hook_height+thickness,0])
    cube([thickness,thickness,width]);
}

```


[User]
I'd like to design a tray and lid for holding pentomino pieces, and I want to be able to customize the size of the tray. Here's what I'm thinking:

The tray itself should be a grid of small "cubbyholes" or compartments, each the size of a single pentomino square unit. I want to use a rounded-cube shape for each of these compartments, sort of like a small cube with all the edges and corners rounded using spheres. Then, the "floor" of the tray would be a solid plane that those rounded cubes are attached to. There will also be connectors between each of these rounded cubes to make the grid more structurally stable.

The lid should fit snugly over the tray. It would also have a solid top plane and walls extending down to enclose the tray. The inside of the lid should be hollowed out to accommodate the raised cubes of the tray.

I need to be able to specify:

*   The length of one side of the unit cube that forms the basis of the "cubbyholes."
*   The radius of the spheres used to round the edges of the cubes.
*   The spacing between the cubes.
*   The number of rows and columns in the tray.

Could you generate OpenSCAD code for this, including separate modules for the basic cube unit, the tray with cutouts, and the lid? I would appreciate it if you would make use of some kind of library to help with the hulling - perhaps the BOSL2 library? Thanks in advance!

[Assistant]
Pentominos_tray.scad:
```
$fn=32;
length=10;
radius = 1;
space = 0.2;
tray_rows=6;
tray_cols=10;

module myCube() {
	dist = length/2-radius-space;
	hull() {
		translate([dist,dist,dist]) sphere(r=radius);
		translate([-dist,dist,dist]) sphere(r=radius);
		translate([dist,-dist,dist]) sphere(r=radius);
		translate([-dist,-dist,dist]) sphere(r=radius);
		translate([dist,dist,-dist]) sphere(r=radius);
		translate([-dist,dist,-dist]) sphere(r=radius);
		translate([dist,-dist,-dist]) sphere(r=radius);
		translate([-dist,-dist,-dist]) sphere(r=radius);
	}
}
module myConnect() {
	translate([space+radius-length/2,space+radius-length/2,space+radius-length/2]) cube([length-2*space-2*radius,length-2*space-2*radius,length-2*space-2*radius]);
}

module tray() {
	union() {
	translate([-0.5 * length - radius, -0.5 * length - radius, -2 * radius]) cube([2 * radius + length * tray_cols, 2 * radius + length * tray_rows, radius]);
	difference() {
	translate([-0.5 * length, -0.5 * length, -1 * radius]) cube([length * tray_cols, length * tray_rows, radius]);
	translate([0, 0, length/2 - radius]) {
		union() {
			for ( i = [0 : tray_cols - 1] ) {
				for ( j = [0 : tray_rows - 1] ) {
					translate([i*length,j*length, 0]) myCube();
				}
			}

			for ( i = [0 : tray_cols - 2] ) {
				for ( j = [-0.5 : tray_rows - 1] ) {
					translate([(i+0.5)*length,(j+0.5)*length,0]) myConnect();
				}
			}
			for ( i = [-0.5 : tray_cols - 1] ) {
				for ( j = [0 : tray_rows - 2] ) {
					translate([(i+0.5)*length,(j+0.5)*length,0]) myConnect();
				}
			}
		}
	}
	}
	}
}
module lid() {
	difference() {
		translate([-0.5 * length - radius, -0.5 * length - radius, -1 * radius]) cube([2 * radius + length * tray_cols, 2 * radius + length * tray_rows, 2 * radius + length]);
		translate([-0.5 * length, -0.5 * length, -0 * radius]) cube([length * tray_cols, length * tray_rows, 2 * radius + length]);
	}
}
tray();
```


[User]
I need help designing a handle for a microscope slide holder. I've got a slide holder that's parametric, and I need a matching handle. The handle should have a few key features.

First, it needs to be parametric, with the main parameter being the number of slides the handle is designed to match, let's call this `slides`.

Second, the height from the bottom of the holder (where the handle attaches) to the top of the handle should be adjustable, I'd like this to be called `handleHeight`.

The handle's main body should be a long rectangle with a main cut taken out of it to create a handle. The length of the rectangle should vary based on the number of slides, so I'm thinking the length should be calculated as `(4*slides)+14`, and the depth should be 5.5mm. The height should be `handleHeight - 21.5`, and I'll call this `actualHeight`.

The main cut should be another rectangle that's slightly taller and longer. The length should be `(4*slides)+8`, the height should be `actualHeight+3`, and the depth is the same 5.5mm. It needs to be offset slightly from the main body - specifically, it needs to be translated by [3, -6, 0].

Finally, there should be little rectangles on each end to help the handle sit on the slide holder. Each of these should be composed of two cubes, the first a 9x2x5.5mm cube, and the second a 2x2.5x5.5mm cube translated so it butts up against the first one. These should be placed on each end of the handle's main body.

Can you generate the OpenSCAD code for this? I don't need to use any external libraries. I'd like the output as a single .scad file.

[Assistant]
Handle.scad:
```
// Lucas Wilder - Michigan Technological University - EE 4777
// Handle

// Height from bottom of holder to top of handle in mm
handleHeight = 100;

// Number of slides
slides = 15;

actualHeight = handleHeight-21.5;

union()
{
	difference()
	{
		union()
		{
			// Main body
			cube(size = [(4*slides)+14,actualHeight,5.5],
							center = false);

		}

		// Main cut
		translate([3,-6,0])
		cube(size = [(4*slides)+8,actualHeight+3,5.5],
				center = false);

	}

	cube(size = [9,2,5.5]);
	translate([7,0,0]) cube(size = [2,2.5,5.5]);

	translate([(4*slides)+5,0,0])cube(size = [9,2,5.5]);
	translate([(4*slides)+5,0,0]) cube(size = [2,2.5,5.5]);
}
```


[User]
I'd like to create a customizable disk with a hole option, please.

I need the ability to specify the overall diameter of the disk and its thickness. I also need a toggle to add a centered hole, along with a parameter for the hole's diameter.

The default values should be a 100mm disk diameter, 10mm thickness, and if the hole is enabled, it should have a 25mm diameter.

I'd like this to be done in a single OpenSCAD file and would prefer if it didn't use any external libraries. Thanks.

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

//	This section is displays the disk options
//	Diameter of disk
Diameter = 100;

//	Thickness of the disk
Thickness = 10;

//	Hole in the disk
Hole_disk = "no"; // [yes,no]

//	Diameter of the hole in the disk
Diameter_hole = 25;

if (Hole_disk=="yes")
{
    difference() {
 	cylinder(h = Thickness, r=Diameter/2);
	cylinder(h = Thickness, r=Diameter_hole/2);
 	}
} else {
    cylinder(h = Thickness, r=Diameter/2);
}
```


[User]
I'd like to create a fan guard, basically a wireframe that mounts to the corners of a standard square PC fan. I have some basic parameters in mind: the overall size of the fan, the distance between the mounting holes, the thickness of the guard, the thickness of the individual wires, and the spacing between the wires.

I want the guard to have four mounting points, one at each corner of the fan. These will be cylindrical posts with mounting holes through the center. The wires will then be circular rings, each spaced evenly apart, going out from the center. Finally, there should be a connection between the wire rings that joins them along the edges, forming a rounded rectangular frame on each side of the fan guard to keep the wires attached to one another.

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

*   `outer_fansize`: This is the overall size of the square fan, like 50mm for example.
*   `distance_mount`: The distance between the center of the mounting holes on the fan. This will typically be the fan size minus 8.
*   `fanwire_thickness`: The overall thickness of the fan guard, basically how thick the ring wires and mounting posts will be.
*   `wire_thickness`: The thickness of each individual wire that makes up the rings.
*   `wire_spacing`: The space between each ring.

Could you generate an OpenSCAD file that takes these parameters and creates the fan guard? I would like the design to be completely parametric, so I can easily change these values. I'd also like to ensure that the mounting holes are sized to fit an M3 screw, so I guess around 3.2mm diameter for the holes would be great. Also, please use `$fn` in your cylinders to reduce the segmentation. Use a `$fn` of 24 for the mounting posts and 72 for the rings. Also, the connecting sections connecting the wires should be centered around the mount points on each side.

[Assistant]
fanwire.scad:
```
//The size of the FAN
outer_fansize = 50;
//The distance between the mounting holes (mostly fansize - 8)
distance_mount = 42;

//The thickness of the entire fanwire
fanwire_thickness = 5;

//The thickness of the wires
wire_thickness = 1;

//Spacing between the circular wires
wire_spacing = 3;

module tube(or,ir,h)
{
    difference()
    {
        cylinder(r=or,h=h,center=true,$fn=72);
        cylinder(r=ir,h=h,center=true,$fn=72);
    }
}

module fanwire(fansize,mount,thickness,wt, ws)
{
    rings = floor((fansize/2) / (wt + ws));

    difference()
    {
        union()
        {
            translate([mount/2,mount/2,0]) cylinder(r=4,h=thickness,center=true,$fn=24);
            translate([-mount/2,mount/2,0]) cylinder(r=4,h=thickness,center=true,$fn=24);
            translate([-mount/2,-mount/2,0]) cylinder(r=4,h=thickness,center=true,$fn=24);
            translate([mount/2,-mount/2,0]) cylinder(r=4,h=thickness,center=true,$fn=24);

            for(i=[1:1:rings])
            {
                tube((i*(wt+ws)),(i*(wt+ws))-wt,thickness);
            }

            fanwire_connect(mount, thickness, ws);

            mirror([1,0,0])
            fanwire_connect(mount, thickness, ws);
        }

        translate([mount/2,mount/2,0]) cylinder(r=1.5,h=thickness+1,center=true,$fn=12);
        translate([-mount/2,mount/2,0]) cylinder(r=1.5,h=thickness+1,center=true,$fn=12);
        translate([-mount/2,-mount/2,0]) cylinder(r=1.5,h=thickness+1,center=true,$fn=12);
        translate([mount/2,-mount/2,0]) cylinder(r=1.5,h=thickness+1,center=true,$fn=12);
    }

    module fanwire_connect(mount, thickness, ws)
    {
        translate([-((mount/2)-2) - ws,0,0])
        difference()
        {
            tube((mount/2)-1.5,(mount/2)-4,thickness);
            translate([-mount/2,0,0])
            cube([mount,mount,thickness+1],center=true);
        }
    }
}

fanwire(outer_fansize,distance_mount, fanwire_thickness, wire_thickness, wire_spacing);

```


[User] I'd like to design an Aztec pyramid, but I need it to be parametric so I can adjust the number of levels. I'm providing the attached code, which is for an Incan pyramid and I'd like something similar, but in the Aztec style, which has stairs instead of angled slopes. The main pyramid structure should still be based on stacked cubes, as in the example, but I'd like to add the stairs to the sides on each level. I'd like the stairs to wrap around the four sides of the pyramid, but I also want to be able to adjust the scale of the entire pyramid. And as with the example, I’d like to set the number of levels. Please use the same structure for the variables, and please make the base of the pyramid 1x1x1 by default (before scaling). Also, could you make the stairs go down on the edges, not just down from the platform? Thanks for your help!

[Assistant]
Pyramid.v1.0.scad:
```
// ****************************************************
//              INCA Pyramid
// By:          Humberto Kelkboom
// Date:        17 Oct 2014
//
//*****************************************************

//Set the scaling of the Object. Standard it base is 1x1x1
ScaleFactor = 5;

//Set the number of levels of the Pyramid
Nivo = 5 ;

scale([ScaleFactor,ScaleFactor,ScaleFactor])
difference()
{
union()
{
    for ( i = [1 : Nivo] )
    {
        translate([(i*-1)-0.5,(i*-1)-0.5,Nivo-i]) cube([1+(i*2),1+(i*2),1]);

        for(rot=[0:3])
        {
            rotate([0,0,rot*90])
            {
                for(tr=[1:4])
                {
                    translate([-0.5,-0.5-i-(1-(0.25*tr)),Nivo-i]) cube([1,(1-(0.25*tr)),0.25*tr]);
                }

                translate([-0.7,-0.5-i,Nivo-i])
                rotate([180,-90,0]) linear_extrude(height=0.2) polygon([[0,0],[0,1.2],[1.2,0]]);

                translate([0.5,-0.5-i,Nivo-i])
                rotate([180,-90,0]) linear_extrude(height=0.2) polygon([[0,0],[0,1.2],[1.2,0]]);
            }
        }
    }

}
translate([(1*-1)-0.75,(1*-1)-0.75,Nivo]) cube([1.5+(1*2),1.5+(1*2),0.3]);

};

```


[User]
I'm looking to create a set of clips for holding down a printer glass plate, and I'd like to make them parametric so I can adjust them easily. I have a rough idea of what I need, and I'm hoping you can help generate the OpenSCAD code for it.

Essentially, each clip should be a modified triangle with a cutout in the corner to allow the plate to slide in and out. The base shape should be a right triangle. The bottom of the clip should be flat and rest on the printer bed. It should have a small cylinder at the center for stability and to grip the bed, and a triangular void to clip the plate at the corner.

I'm envisioning a few parameters. I'd like to control the overall *width of the triangle*, as well as the *side thickness* of the clip (how far in from the edge the triangular cut-out is). There should also be a way to specify whether the clip is *open* or *closed*. If it's open, the triangular cut-out should be slightly below the top surface, and if it's closed, it should be slightly above the top surface. This will allow me to specify either a lower clip for holding the glass plate down, or a higher clip that will hold it secure.

I would need a way to control the width of the main triangle (base width) and the thickness of the sides. I also need a parameter to control whether the cutout triangle will be slightly above or below the main shape. The length of the triangle's non-right-angle side should be the same as the width of the triangle's base. I would need to control the height of the clip as well.

Ideally, I could call a module called `PlateHolder` that takes a single string argument, either "open" or "close," to create the correct type of clip. I'd then like to generate 4 of these clips, with 2 "open" clips and 2 "close" clips, positioned as if they were holding down a square glass plate (one in each corner). Can you generate the necessary OpenSCAD files for this design?

[Assistant]
GlassPlate_Holder.scad:
```
/*
	Glass plate holder
	By Humberto Kelkboom
	Lark3D.nl

	Changed: Inserted adjustable side thikness.
*/

//The width of the triange
WidthOffTriagle=25;
//The width of the Sides

WithOffSides = 6;

module triangle(width,length,h)
{
	linear_extrude(height=h)
	polygon([[0,0],[0,width],[length,0]]);
}

module PlateHolder(OOC){
difference(){
triangle(20,20,5);
translate([WithOffSides,WithOffSides,(OOC=="open"?-0.5:2)])triangle(10,10,6);
translate([3,3,2.5])cylinder(r=1.65, h=6, center=true,$fn=24);
}
};

PlateHolder("open");
translate([WidthOffTriagle +10,0,0])PlateHolder("open");
translate([0,WidthOffTriagle +10,0])PlateHolder("close");
translate([WidthOffTriagle +10,WidthOffTriagle +10,0])PlateHolder("close");
```


[User]
Hi, I'm looking to design a Bowden adapter for a Wade extruder, specifically something that'll fit onto a standard M10 fitting. I need it to be parametric so I can easily adjust it for different setups.

Here's the idea: it'll have a base plate, which will mount to the extruder. This plate will have screw holes for mounting it (I'm thinking M3 screws, but this should be adjustable). Also, it'll need a hole in the center for the hotend to pass through, and, of course, the hole for the Bowden tube fitting. The hotend hole should be sized to accept common diameters, perhaps with an additional parameter for the hotend's thickness. It should also have a filament path to connect everything.

The mounting holes need to be spaced a certain distance apart, and all the dimensions for the plate itself will need to be adjustable. I'll also need to account for the thickness of the material. I guess I should also have an option for a small offset between different sections. It would be helpful to have all the variables well-commented in the file. The screw holes for the plate should also have a depth parameter.

For the mounting section itself, I need to include a spot for the hotend to sit and also the fitting for the Bowden tube. I will be using M10 fittings in my usecase. I'm thinking that all the diameters will need to be parameters.

I want to be able to generate all this in a single SCAD file. Do you think you could help me with this design?

[Assistant]
V01.scad:
```
// Greg's Wade reloaded - Guidler, Tilt Screws, Fishbone Gears
//mod (c)g3org bowden universal adapter for normal fittings like M10

//manigofset
manigofset=0.1;

// screw distance
screwdist=50;

//dinameter monting screw
mounting_screw=3;

//lenght
mount_length=60;

//width
mount_width=25;

//Material thickness
thickness=7;

//fittingdiameter M10?
fittingdiameter=10.1;
fitting_screw_deep=5.5;

//hotend_diameter  only the value
hotend_diameter=16;

// hotend_thickness only the value
hotend_thickness=5;

//filament hole
filament_hole=2.5;

$fn=50*1;

// Plate

module plate();{
	difference(){
		cube([mount_length,mount_width,thickness],center=true);
		translate([0,0,-thickness/2])	cylinder(h = fitting_screw_deep, r=fittingdiameter/2);

//Bohrung1
		translate([screwdist/2,0,0])		cylinder(h = thickness+manigofset, r=mounting_screw/2,center=true);
//Bohrung2
		translate([-screwdist/2,0,0])		cylinder(h = thickness+manigofset, r=mounting_screw/2,center=true);

//		translate([0,0,0])		cylinder(h = thickness+hotend_thickness+manigofset, r=fittingdiameter/2,center=true);

		rotate([90,30,0]){
			translate([0,0,0]){
					cylinder(h = mount_width/2+manigofset, r=1.75);
					cylinder($fn = 6,h=8,r=3);
			}
		}
	}
}

module fittingmount();{
	difference(){
//wade extruder diameter
		translate([0,0,thickness/2])		cylinder(h = hotend_thickness, r=hotend_diameter/2);
//fitting diameter
		translate([0,0,thickness/2]){
			cylinder(h = hotend_thickness+thickness, r=filament_hole/2);
		}

	}
}

```


[User]
I need a cogwheel, and I'd like it to be customizable via parameters. Here's what I'm thinking:

The basic shape should be a flat, circular disc with teeth around the edge. I need to be able to specify the overall radius of the disc, as well as the depth or thickness of the entire gear.  Also, there should be a circular hole in the center for an axle, and I need to be able to control the radius of that hole.

The teeth are pretty important. I want to specify the number of teeth around the circumference, and I'd also like to control how "thick" the teeth are, in relation to the radius of the circle (not as an absolute value) so I can create gears of varying degrees of engagement, or just be able to keep the "look" I like with different sized gears.

The teeth themselves should be slightly angled at the tips, sort of like a trapezoid that's angled inwards - this should be generated automatically once the thickness of the tooth is set.

I think that's everything. I'd like the whole thing to be parametric in OpenSCAD so I can easily adjust all these settings. I don't have any special requirements for libraries, though if there's a library that can help with gears, that'd be great. Let me know if I can provide any other information.

[Assistant]
cogwheel.scad:
```
// Determines the radius of the cogwheel.
r = 5;

// Determines the depth of the cogwheel.
depth = 2;

// Determines the radius of the cutout for the axis.
axis_scale = 0.4;

// Determines the number of teeth on the cogwheel. Should be even.
num_teeth = 16;

tooth_l = r;
tooth_w_scale = 4/num_teeth;
tooth_w = tooth_l * tooth_w_scale;

module 2teeth(pos,angle) {
	translate(pos){
		rotate(a = angle) {
			polygon(points=[[-tooth_l,-tooth_w/2],[tooth_l,-tooth_w/2],[tooth_l+tooth_l/4,-tooth_w/4],[tooth_l+tooth_l/4,tooth_w/4],[tooth_l,tooth_w/2],[-tooth_l,tooth_w/2],[-tooth_l-tooth_l/4,tooth_w/4],[-tooth_l-tooth_l/4,-tooth_w/4]]);
		}
	}
}

module cogwheel() {
	$fs = 0.5;
	linear_extrude(depth) {
	translate(pos) {

		difference() {
			union(){
				circle(r);
				for(i = [0:floor(num_teeth/2)-1]) {
					2teeth([0,0,0],(360*i/num_teeth));
				}
			}
			circle(r*axis_scale);
		}
	}
	}
}

cogwheel();

```


[User]
I'd like to create a customizable shoe horn, but I need a little help with the OpenSCAD code. I've got some basic parameters in mind, like the length of the straight part, the thickness, a hole for hanging, and the curvature at the end, but I want to be able to easily adjust these.

Specifically, I envision a shoe horn with:

*   A straight section of adjustable length (let's call this `height`).
*   A consistent thickness (`thick`).
*   A hole near the top for hanging with a customizable diameter (`holesize`).
*   A curved end with a primary radius (`rad`), and that curve should get flatter towards the middle and at the very top. I'd like to control these flattening factors with `rad_multiplier1` (for the middle curve) and `rad_multiplier2` (for the top).
*   The curvature should be generated by taking multiple rotations around a base curve. I think this was done with `angle_step` before.
*   The ends of the shape should have a rounded profile, which we can define with `faces`.

I'd like the output to be a single, parametric `.scad` file.

Can you help me generate that code?

[Assistant]
Babys_ShoeHorn_C.scad:
```
//Length of the shoe horns straight part in mm
height=100;

//Thickness of the shoe horn in mm
thick=3;

//Diameter of the hole to hang it
holesize=9;

//Radius of the circle for the main curvature at the end of the shoe horn
rad=30;

//Radius multiplier for the middle part of the shoe horn (make it flatter in the middle)
rad_multiplier1=1.5;

//Radius multiplier for the top end (make it even flatter and move it further out)
rad_multiplier2=2;

//How many degree from one face of the curvature to the next (bigger for faster rendering)
angle_step=5;

//Faces for the rounding at the ends of the shoe horn
faces=10;

// preview[view:left, tilt:side]

/* [Hidden] */

/*
Shoe Horn
Version C, November 2014
Written by MC Geisler (mcgenki at gmail dot com)

This is the baby sized version... Customize it to suit a yeti.

Have fun!

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

width=rad*1.4;

module stickballs(rot,low_z,high_z,low_r,high_r,round_low)
{
	rotate([0,0,rot])
		{
			translate([-low_r,0,low_z+(1-cos(rot))*round_low])
				sphere(r=thick/2,center=true,$fn=faces);

			translate([-high_r,0,high_z])
				sphere(r=thick/2,center=true,$fn=faces);
		}
}

//lower part
module stickballslong(rot)
{
	stickballs(rot,-height/2,height/2,rad,rad*rad_multiplier1,height/2);
}

//upper part
module stickballsshort(rot)
{
	stickballs(rot,height/2,height/2+height*.1,rad*rad_multiplier1,rad*rad_multiplier2,0);
}

module shoehorn(length)
{
	angle=45;

	cutsize=max(length,thick,rad,width)*2+2*rad;
	difference()
	{
		union()
		{
			for(i=[-angle:angle_step:angle-angle_step])
			{
				hull()
				{
					stickballslong(i);
					stickballslong(i+angle_step);
				}
				hull()
				{
					stickballsshort(i);
					stickballsshort(i+angle_step);
				}
			}
		}
		translate([0,cutsize/2+width/2,0])
			cube(cutsize+2,center=true);
		translate([0,-(cutsize/2+width/2),0])
			cube(cutsize+2,center=true);
		translate([-rad*rad_multiplier1,0,height/2])
			rotate([0,45,0])
				rotate([0,0,45])
					cube([holesize,holesize,thick*50],center=true);
	}
}

rotate([90,0,0])
	shoehorn(height);

```


[User]
I'm trying to design a universal spool holder that can accommodate different sized spools, and I'm having trouble figuring out how to make it adjustable and parametric. I want to use OpenSCAD, and I think I need to break it down into a few different parts. I'm thinking of a few base components that can be adjusted based on spool size and then assembled.

First, I'll need a base that sits on the desk. The base should have some sort of adjustable support so that different spool sizes can be used. This will probably need to have some sort of slider to hold the spool's axel. The base should also be printable without supports, I don't want to have to fiddle with that too much.

Second, I need some sort of adjustable axel assembly that will hold the spools. I was thinking of a rod with two end pieces that slide over the rod and then have the spool set inside of them. I think these would need to have some sort of screw to be able to tighten the mechanism.

Finally, I think that each of these parts will need to have parameters for things like spool width, spool diameter, and axel diameter. These need to be adjustable so that I can customize it to different spool sizes. I'd like to use MCAD library for the screw and bolt generation - I think I'd like the knurled thumb screws. I'm open to suggestions on better ways to do this, too. I also would like to make sure that the generated parts can be printed without supports if possible.

[Assistant]
connector.scad:
```
// 5/64ths
// 3/4
// 3/4

// Which part to print

part = "corner"; // [corner:Corner, beamRest:Beam rest]

// How round should the holes be?

ROUNDNESS=5; //[0:50]

units = "in"; //[in:Inches, mm:mm]

conversion = (units=="in")?25.4:1;

// This is the size of each of the legs of the beam

beamWidth = .75;

// This is the thickness of the beam (5/64)

thicknessOfBeam = 0.078125;

// how thick should the walls be? (5/64)

wallThickness = 0.078125;

// spacing between parts

printerTolerance = .006;

beamThickness = thicknessOfBeam * conversion;
beamSize = beamWidth * conversion;

// sorry, mm only
tolerance = printerTolerance * conversion;

thickness = wallThickness * conversion;

// depth of the pieces

pieceDepth = .75;
depth = pieceDepth * conversion;

// radius of the hole

holeSize = 0.09375;
holeRad = holeSize * conversion;

// The amount of overhang on the beam rest

overhang = 1;

module connector(connectorDepth = depth, support1 = false, support2 = false)
{
    difference(){
        linear_extrude(connectorDepth)
        {
                polygon(points=[[0,0], [beamSize + 2*(tolerance + thickness), 0],
            [beamSize + 2 * (tolerance + thickness), beamThickness + 2* (thickness + tolerance)],
            [2*(tolerance + thickness) + beamThickness, beamThickness + 2* (thickness + tolerance)],
            [2*(tolerance + thickness) + beamThickness, 2*(tolerance + thickness) + beamSize],
            [0,2*(tolerance + thickness) + beamSize],

            [thickness, thickness], [thickness + beamSize + 2 * tolerance, thickness],
            [thickness + beamSize + 2 * tolerance, thickness + 2 * tolerance + beamThickness],
            [thickness + 2 * tolerance + beamThickness, thickness + 2 * tolerance + beamThickness],
            [thickness + 2 * tolerance + beamThickness, 2 * tolerance + beamSize + thickness],
            [thickness, 2 * tolerance + beamSize + thickness]], paths=[[0,1,2,3,4,5], [6,7,8,9,10,11]]);

            if(support1)

            {
                translate([thickness + 2 * tolerance + beamThickness, thickness-.5, 0])
                    square(size=[.2, beamThickness+2*tolerance+1]);

                //translate([2*(thickness + tolerance) + beamThickness, thickness-.5, 0])

                 //   square(size=[.2, beamThickness+2*tolerance+1]);

            }

            if(support2)

            {
                translate([thickness-.5, thickness + 2 * tolerance + beamThickness, 0])
                    square(size=[beamThickness+2*tolerance+1, .2]);

                //translate([thickness-.5, 2 * (thickness + tolerance) + beamThickness, 0])

                //    square(size=[beamThickness+2*tolerance+1, .2]);

            }
        }

        if(holeRad > 0)

        {
            // holes
            translate([(beamSize + 2 * (tolerance + thickness))/2,-.5,connectorDepth/2])

                rotate([-90,0,0])cylinder(h=beamThickness + 2* (thickness + tolerance)+1, r=holeRad, $fn=ROUNDNESS);

            translate([-.5,(beamSize + 2 * (tolerance + thickness))/2,connectorDepth/2])

                rotate([0,90,0])cylinder(h=beamThickness + 2* (thickness + tolerance)+1, r=holeRad, $fn=ROUNDNESS);
        }

    }
}
module angleBracket()

{

    cubeSize = beamSize + 2 * (tolerance+thickness);
translate([cubeSize,cubeSize,0])rotate([90,0,180])connector(support1 = true);
translate([0,0,0])rotate([0,-90,0])connector(support2 = true);
translate([cubeSize,0,0])rotate([0,0,90])connector();

    cube(size=[cubeSize, cubeSize, 2*thickness]);

}

module beamRest(length = 25)

{

    // sqrt(a * a + a * a) = sqrt(2) * a

    width = sqrt(2)*(depth+2*(thickness + tolerance));

    connector(connectorDepth=width);

    translate([beamSize + thickness + 2*tolerance,0,0]){

        cube(size=[length,2*(thickness+tolerance) + beamThickness, width]);

    }

    translate([beamSize + thickness+tolerance, -2*thickness, 0])

        cube(size=[length, 3*thickness, thickness]);

    translate([beamSize + thickness+tolerance, -2*thickness, width -thickness ])

        cube(size=[length, 3*thickness, thickness]);

    //crossbeam

    translate([beamSize + thickness+tolerance, -2*thickness, 0])

        cube(size=[thickness, thickness, width]);

}

module ring(id, od, depth)

{

    difference()

    {

        cylinder(r=od, h=depth, $fn=ROUNDNESS);

        translate([0,0,-1])cylinder(r=id, h=depth+2, $fn=ROUNDNESS);

    }

}

if(part == "beamRest")

{

    beamRest(length = overhang * conversion);

}

if(part == "corner" || pieceToPrint == "all")

{

    angleBracket();

}

```