[User]
Hey, I'm looking for an OpenSCAD design for a parametric gear bearing, and I'd like it to have customizable text on the outside. I've seen some designs out there, and I particularly like the planetary gear setup and the herringbone teeth. It's really cool. Here's what I need:

*   **Overall Structure:** A ring-shaped outer bearing with planetary gears inside, rotating around a central sun gear. The whole thing should be able to spin, or at least appear to do so. It should use herringbone style teeth for smooth meshing.
*   **Text Integration:** I want to engrave customizable text on the outer surface of the ring. The text needs to be a parameter so I can change it easily. The font should be selectable with a variable as well, I like to use custom fonts if possible. I want to be able to adjust the size of the text, its vertical offset from the center line, and the depth of the engraving.
*   **Planetary Gears:** The number of planetary gears should be adjustable, as well as the number of teeth on each planet. The number of teeth on the sun gear should be calculated to match, but I'd like to give an approximate number as a starting point. The gear ratio doesn't matter too much, mostly I want it to look cool and functional.
*   **Gear Parameters:**
    *   Outer ring diameter should be a parameter.
    *   The thickness of the whole thing should be a parameter.
    *   Clearance between gears should be adjustable.
    *   Pressure angle of the gears should be adjustable.
    *   I'd like the option to adjust how many teeth the herringbone pattern is twisted across (I think that's how it works).
    *  I want to have a parameter for the width of the hexagonal hole in the center.
    *  I also want to adjust the maximum depth ratio of the teeth, just in case.
*   **Libraries:** I know there are some libraries out there, I need the `Write.scad` library to engrave the text, so make sure that one is included and used.

I think that's about it. I hope it isn't too much to ask for. Let me know if you have any questions!

[Assistant]
Gear_Bearing-Parametric-with_text.scad:
```
include <write/Write.scad>
// Planetary gear bearing (customizable with text)
//text
text="Your Text Here";
//Font
font="write/Letters.dxf"; //["write/BlackRose.dxf":BlackRose,"write/braille.dxf":Braille,"write/knewave.dxf":knewave,"write/Letters.dxf":Default,"write/orbitron.dxf":Orbitron]
//Text size
t_size=6;
//Text Vertical Offset
t_vert=0;
//Text depth
depth=1;
// outer diameter of ring
D=50;
// thickness
T=15;
// clearance
tol=0.25;
number_of_planets=5;
number_of_teeth_on_planets=7;
approximate_number_of_teeth_on_sun=9;
// pressure angle
P=45;//[30:60]
// number of teeth to twist across
nTwist=1;
// width of hexagonal hole
w=6.7;

DR=0.5*1;// maximum depth ratio of teeth

m=round(number_of_planets);
np=round(number_of_teeth_on_planets);
ns1=approximate_number_of_teeth_on_sun;
k1=round(2/m*(ns1+np));
k= k1*m%2!=0 ? k1+1 : k1;
ns=k*m/2-np;
echo(ns);
nr=ns+2*np;
pitchD=0.9*D/(1+min(PI/(2*nr*tan(P)),PI*DR/nr));
pitch=pitchD*PI/nr;
echo(pitch);
helix_angle=atan(2*nTwist*pitch/T);
echo(helix_angle);

phi=$t*360/m;
//writecylinder("test",[0,0,0],25,15);
translate([0,0,T/2]){
	difference(){
		cylinder(r=D/2,h=T,center=true,$fn=100);
		herringbone(nr,pitch,P,DR,-tol,helix_angle,T+0.2);
		difference(){
			//-----------------------------------------------------------
			writecylinder(text,[0,0,0],D/2,T/10+t_vert,h=t_size,t=depth);
			//-----------------------------------------------------------
		}
	}
	rotate([0,0,(np+1)*180/ns+phi*(ns+np)*2/ns])
	difference(){
		mirror([0,1,0])
			herringbone(ns,pitch,P,DR,tol,helix_angle,T);
		cylinder(r=w/sqrt(3),h=T+1,center=true,$fn=6);
	}
	for(i=[1:m])rotate([0,0,i*360/m+phi])translate([pitchD/2*(ns+np)/nr,0,0])
		rotate([0,0,i*ns/m*360/np-phi*(ns+np)/np-phi])
			herringbone(np,pitch,P,DR,tol,helix_angle,T);
}

module rack(
	number_of_teeth=15,
	circular_pitch=10,
	pressure_angle=28,
	helix_angle=0,
	clearance=0,
	gear_thickness=5,
	flat=false){
addendum=circular_pitch/(4*tan(pressure_angle));

flat_extrude(h=gear_thickness,flat=flat)translate([0,-clearance*cos(pressure_angle)/2])
	union(){
		translate([0,-0.5-addendum])square([number_of_teeth*circular_pitch,1],center=true);
		for(i=[1:number_of_teeth])
			translate([circular_pitch*(i-number_of_teeth/2-0.5),0])
			polygon(points=[[-circular_pitch/2,-addendum],[circular_pitch/2,-addendum],[0,addendum]]);
	}
}

module monogram(h=1)
linear_extrude(height=h,center=true)
translate(-[3,2.5])union(){
	difference(){
		square([4,5]);
		translate([1,1])square([2,3]);
	}
	square([6,1]);
	translate([0,2])square([2,1]);
}

module herringbone(
	number_of_teeth=15,
	circular_pitch=10,
	pressure_angle=28,
	depth_ratio=1,
	clearance=0,
	helix_angle=0,
	gear_thickness=5){
union(){
	gear(number_of_teeth,
		circular_pitch,
		pressure_angle,
		depth_ratio,
		clearance,
		helix_angle,
		gear_thickness/2);
	mirror([0,0,1])
		gear(number_of_teeth,
			circular_pitch,
			pressure_angle,
			depth_ratio,
			clearance,
			helix_angle,
			gear_thickness/2);
}}

module gear (
	number_of_teeth=15,
	circular_pitch=10,
	pressure_angle=28,
	depth_ratio=1,
	clearance=0,
	helix_angle=0,
	gear_thickness=5,
	flat=false){
pitch_radius = number_of_teeth*circular_pitch/(2*PI);
twist=tan(helix_angle)*gear_thickness/pitch_radius*180/PI;

flat_extrude(h=gear_thickness,twist=twist,flat=flat)
	gear2D (
		number_of_teeth,
		circular_pitch,
		pressure_angle,
		depth_ratio,
		clearance);
}

module flat_extrude(h,twist,flat){
	if(flat==false)
		linear_extrude(height=h,twist=twist,slices=twist/6)child(0);
	else
		child(0);
}

module gear2D (
	number_of_teeth,
	circular_pitch,
	pressure_angle,
	depth_ratio,
	clearance){
pitch_radius = number_of_teeth*circular_pitch/(2*PI);
base_radius = pitch_radius*cos(pressure_angle);
depth=circular_pitch/(2*tan(pressure_angle));
outer_radius = clearance<0 ? pitch_radius+depth/2-clearance : pitch_radius+depth/2;
root_radius1 = pitch_radius-depth/2-clearance/2;
root_radius = (clearance<0 && root_radius1<base_radius) ? base_radius : root_radius1;
backlash_angle = clearance/(pitch_radius*cos(pressure_angle)) * 180 / PI;
half_thick_angle = 90/number_of_teeth - backlash_angle/2;
pitch_point = involute (base_radius, involute_intersect_angle (base_radius, pitch_radius));
pitch_angle = atan2 (pitch_point[1], pitch_point[0]);
min_radius = max (base_radius,root_radius);

intersection(){
	rotate(90/number_of_teeth)
		circle($fn=number_of_teeth*3,r=pitch_radius+depth_ratio*circular_pitch/2-clearance/2);
	union(){
		rotate(90/number_of_teeth)
			circle($fn=number_of_teeth*2,r=max(root_radius,pitch_radius-depth_ratio*circular_pitch/2-clearance/2));
		for (i = [1:number_of_teeth])rotate(i*360/number_of_teeth){
			halftooth (
				pitch_angle,
				base_radius,
				min_radius,
				outer_radius,
				half_thick_angle);
			mirror([0,1])halftooth (
				pitch_angle,
				base_radius,
				min_radius,
				outer_radius,
				half_thick_angle);
		}
	}
}}

module halftooth (
	pitch_angle,
	base_radius,
	min_radius,
	outer_radius,
	half_thick_angle){
index=[0,1,2,3,4,5];
start_angle = max(involute_intersect_angle (base_radius, min_radius)-5,0);
stop_angle = involute_intersect_angle (base_radius, outer_radius);
angle=index*(stop_angle-start_angle)/index[len(index)-1];
p=[[0,0],
	involute(base_radius,angle[0]+start_angle),
	involute(base_radius,angle[1]+start_angle),
	involute(base_radius,angle[2]+start_angle),
	involute(base_radius,angle[3]+start_angle),
	involute(base_radius,angle[4]+start_angle),
	involute(base_radius,angle[5]+start_angle)];

difference(){
	rotate(-pitch_angle-half_thick_angle)polygon(points=p);
	square(2*outer_radius);
}}

// Mathematical Functions
//===============

// Finds the angle of the involute about the base radius at the given distance (radius) from it's center.
//source: http://www.mathhelpforum.com/math-help/geometry/136011-circle-involute-solving-y-any-given-x.html

function involute_intersect_angle (base_radius, radius) = sqrt (pow (radius/base_radius, 2) - 1) * 180 / PI;

// Calculate the involute position for a given base radius and involute angle.

function involute (base_radius, involute_angle) =
[
	base_radius*(cos (involute_angle) + involute_angle*PI/180*sin (involute_angle)),
	base_radius*(sin (involute_angle) - involute_angle*PI/180*cos (involute_angle))
];

```


[User]
Hi, I'm looking to design a low-friction spool holder for my 3D printer. I've got a few existing parts that I want to combine into a single, parametric design. I'd like to be able to customize the dimensions, the number and size of bolt holes, and the overall height of the parts. The final assembly will involve stacking some of these parts.

Here’s a breakdown of the individual parts and what I'm thinking:

**Part 1 (Base):** This will be a base with a rotating extruded profile and bolt holes. I want to define parameters for:

*   `d1`: Inner diameter of the central hole.
*   `d2`: Diameter of the smaller diameter section at the top
*   `d3`: Diameter of the step down from the flange
*    `d4`: Outer diameter of the base.
*   `h1`: Height of the flat bottom portion.
*   `h2`: Height of the step leading to the central hole
*   `h3`: Total height of the base.
*   `chamfer`: Size of the chamfer at the edges.
*   `boltHoles`: Number of bolt holes.
*   `boltDia`: Diameter of the bolt hole circle.
*   `boltHoleDia`: Diameter of the bolt holes.

**Part 2 (Top):** I’m thinking this part will have a similar shape to part 1, but with different dimensions. The same parameters should be used, except the parameter names should be part2\_d1, part2\_d2, etc.

**Part 3 (Post A):** This is a simple post with a shoulder. It will have parameters for:

*   `postDia`: Diameter of the main post.
*   `postHeight`: Height of the main post.
*   `shoulderDia`: Diameter of the shoulder.
*   `shoulderHeight`: Height of the shoulder.
*   `holeDia`: Diameter of the hole through the center.

**Part 4 (Post B):** This is similar to Post A, but with different dimensions. Same parameters as part 3, but with postB\_ prefix (postB\_postDia, etc.).

All parts should be designed using the `difference()` and `union()` functions.  For the base parts, use `rotate_extrude()` to create the main profile from a polygon, and `cylinder()` to create the central hole and bolt holes. For the posts, use cylinders to create the main bodies and central holes. All cylinders should use a reasonable `$fn` value for smoothness (I'm thinking 36). Also, I'd like the code to be well-commented for clarity.

Could you generate the OpenSCAD files for these four parts, keeping them separate for modularity, as well as the file for assembly of the parts? I'd like to use a top-level file that includes the individual parts and demonstrates assembly. I would also like to be able to change the total height of the stacked parts. Thanks so much!

[Assistant]
part_01.scad:
```
/* [Global] */

d1 = 22.6;
d2 = 45;
d3 = 51.7;
d4 = 56;
h1 = 2;
h2 = 11;
h3 = 20;
chamfer = 0.5;
boltHoles = 3;
boltDia = 34;
boltHoleDia = 3;

difference(){
	rotate_extrude($fn=200)
		polygon(points=[[0,0],[d4/2,0],[d4/2,h1],[d3/2,h1],[d3/2,h3-chamfer],[d3/2-chamfer,h3],[d2/2+chamfer,h3],[d2/2,h3-chamfer], [d2/2,h2],[0,h2]], paths=[[0,1,2,3,4,5,6,7,8,9]]);
	union(){
		translate([0,0,-h3/2])
			cylinder(r=d1/2, h=h3*2,$fn=36);
		boltHoles();
	}
}

module boltHoles(){
	for (i=[0:boltHoles-1])
		rotate([0,0,i*360/boltHoles])
			translate([0,boltDia/2,-h3/2])
				cylinder(r=boltHoleDia/2,h=h3*2,$fn=36);
}
```
part_04.scad:
```
postDia = 9.6;
postHeight = 5;
shoulderDia = 14;
shoulderHeight = 4;
holeDia = 3.2;

difference() {
union() {
	cylinder($fn=36,r=postDia/2,h=postHeight);
	cylinder($fn=36,r=shoulderDia/2,h=shoulderHeight);
}

cylinder($fn=36,r=holeDia/2,h=15);
}
```
part_03.scad:
```
postDia = 9.6;
postHeight = 8;
shoulderDia = 16;
shoulderHeight = 3;
holeDia = 3.5;

difference() {
union() {
	cylinder($fn=36,r=postDia/2,h=postHeight);
	cylinder($fn=36,r=shoulderDia/2,h=shoulderHeight);
	//translate([-27,-17,0])
		//cube([54,34,2]);
}

cylinder($fn=36,r=holeDia/2,h=15);
}
```
part_02.scad:
```
/* [Global] */

d1 = 16;
d2 = 16;
d3 = 22;
d4 = 44;
h1 = 5;
h2 = 0;
h3 = 10;
chamfer = 0.2;
boltHoles = 3;
boltDia = 34;
boltHoleDia = 3.5;

difference(){
	rotate_extrude($fn=200)
		polygon(points=[[0,0],[d4/2,0],[d4/2,h1],[d3/2,h1],[d3/2,h3-chamfer],[d3/2-chamfer,h3],[d2/2+chamfer,h3],[d2/2,h3-chamfer], [d2/2,h2],[0,h2]], paths=[[0,1,2,3,4,5,6,7,8,9]]);
	union(){
		translate([0,0,-h3/2])
			cylinder(r=d1/2, h=h3*2,$fn=36);
		boltHoles();
	}
}

module boltHoles(){
	for (i=[0:boltHoles-1])
		rotate([0,0,i*360/boltHoles])
			translate([0,boltDia/2,-h3/2])
				cylinder(r=boltHoleDia/2,h=h3*2,$fn=36);
}
```


[User]
I'm looking to create an adjustable endstop holder for a 3D printer using a rail system. I've seen a design on Thingiverse that looks pretty close to what I need but I want to be able to customize it more easily through parameters. The original design is called "JPTs-Endstop-Arm" if that helps.

Essentially, I want two main parts: a rail and an arm that slides along the rail. The arm should have mounting holes for the endstop switch. I'd like to control things like the rail length, the arm length, the arm's height offset from the rail center, the number and spacing of the screw holes on the arm, the rail and arm thicknesses, and the screw hole diameters.

Specifically, here are some parameters I'd like to control:

*   **`rail_len`**: The total length of the rail.
*   **`arm_len`**: The length of the arm, extending from the center of the rail.
*  **`arm_elevation`**: The vertical offset of the arm from the center of the rail; this can be positive or negative.
*   **`support1`**: A boolean to include/exclude a support between the arm and the rail.
*   **`support2`**: Another boolean for a second support.
*   **`arm_screwcount`**: Number of screw holes on the arm.
*   **`arm_screwdistance`**: The distance between the screw holes on the arm.
*   **`rail_width`**: The thickness of the rail.
*   **`rail_screws`**: The diameter of the screw openings in the rail.
*   **`rail_height`**: The height of the rail, excluding the angled part.
*   **`arm_width`**: The thickness of the arm.
*   **`arm_height`**: The height of the arm.
*   **`arm_screws`**: The diameter of the screw holes on the arm.

The rail should have a profile that has a flat section in the middle, and then angles out to two 'rails', with the top and bottom of each rail being flat, if that makes sense.  I also need to be able to place screw holes on the rail to mount it.

The arm needs to be able to slide freely along the rail, and its screw holes should be aligned so an endstop switch can be mounted. I want to be able to specify the distance the arm is offset vertically from the center of the rail with `arm_elevation`. Also, can the supports be placed automatically based on the arm elevation?

I'd prefer to have these parameters defined in the OpenSCAD file so I can tweak them easily.  No libraries needed as far as I can tell; it looks like the original code didn't require any.

[Assistant]
JPTs-Endstop-Arm.scad:
```
// (c) JPT 2014
// http://www.thingiverse.com/thing:375759

// length of rail (including arm_height)
rail_len = 60;

// length of arm from center of rail (i.e. plus/minus arm_width/2)
arm_len = 30;

// elevation of the arm from center of rail (may be negative)
arm_elevation = -20;

// Add a support between arm and rail?
support1 = true;
support2 = false;

// number of screw holes in the arm
arm_screwcount = 2;

// distance between screw holes
arm_screwdistance = 10;

// rail thickness
rail_width = 5;

// diameter of the opening for the screws
rail_screws = 4;

// rail height excluding the 45° part (so it's plus rail_width)
rail_height = 9;

// arm thickness
arm_width = 5;

arm_height = 10;

// diameter of screw holes
arm_screws = 3.5;

// OpenScad option: how many parts should a full circle be rendered of?
$fn = 24;

s = arm_elevation > 0 ? arm_elevation + arm_width/2 : -arm_elevation + arm_width/2;
t = arm_elevation > 0 ? s/2 : -s/2;

// support
s1p0 = [arm_height/2,                          0, rail_width/2];
s1p1 = [arm_height/2, -arm_elevation-arm_width/2, rail_width/2];
s1p2 = [arm_height/2, -arm_elevation-arm_width/2, rail_width/2 + arm_len - arm_screwcount * arm_screwdistance];
s1p3 = [0  , -arm_elevation-arm_width/2, rail_width/2 + arm_len - arm_screwcount * arm_screwdistance];
s1p4 = [0  , -arm_elevation-arm_width/2, rail_width/2];
s1p5 = [0  ,                          0, rail_width/2];

s1t = [
	[2, 1, 0],
	[5, 3, 2, 0],
	[5, 4, 3],
	[0, 1, 4, 5],
	[1, 2, 3, 4]
];

if ((support1) && (abs (arm_elevation) > 4)) {

	if (arm_elevation < 0) {
		polyhedron(
			points = [s1p0, s1p1, s1p2, s1p3, s1p4, s1p5],
			triangles = s1t,
			convexity = 2
		);
	} else {
		polyhedron(
			points = [s1p5, s1p4, s1p3, s1p2, s1p1, s1p0],
			triangles = s1t,
			convexity = 2
		);
	}
}

sign = arm_elevation > 0?-1:1;
s2y=sign * rail_height/2;

s2p0 = [arm_height, -arm_elevation+arm_width/2*sign, +rail_width/2];
s2p1 = [arm_height, -arm_elevation+arm_width/2*sign, -rail_width/2];
s2p2 = [arm_height,   s2y, -rail_width/2];
s2p3 = [arm_height,   s2y, +rail_width/2];
s2p4 = [arm_height*2, s2y, +rail_width/2];
s2p5 = [arm_height*2, s2y, -rail_width/2];

s2t = [
	[0, 1, 2, 3],
	[4, 5, 1, 0],
	[5, 2, 1],
	[0, 3, 4],
	[5, 4, 3, 2]
];

if ((support2) && (abs (arm_elevation) > rail_width/2)) {
	if (arm_elevation < 0) {
		polyhedron(
//			points = [s2p0, s2p1, s2p2, s2p3, s2p4, s2p5],
			points = [s2p5, s2p4, s2p3, s2p2, s2p1, s2p0],
			triangles = s2t,
			convexity = 2
		);
	} else {
		polyhedron(
			points = [s2p0, s2p1, s2p2, s2p3, s2p4, s2p5],
//			points = [s2p5, s2p4, s2p3, s2p2, s2p1, s2p0],
			triangles = s2t,
			convexity = 2
		);
	}

}

// fix wrong placement. TODO fix all points below so this rotation is not necessary any more
rotate(a=[90,0,0]) {

	union() {

		translate(v=[
			arm_height/2,
			arm_len/2 + rail_width/2,
			arm_elevation]) {

		   difference() {
				// arm
				cube(size=[arm_height, arm_len, arm_width], center = true);

				// screw holes
				translate([0, arm_len/2 - arm_screwdistance/2,0])
				for (i = [0 : arm_screwcount-1] ) {
			   		translate([0, - i * arm_screwdistance, 0])
					cylinder(h = arm_width+2, r = arm_screws/2, center = true);
				}
			}
		}

		// arm elevation
		translate([arm_height/2, 0, t]) {
			cube(size = [arm_height, rail_width , s], center = true);
		}

		// rail
		difference() {
			// rail
			polyhedron(
				points = [
					[0, -rail_width/2, -rail_height/2],
					[0,             0, -(rail_height + rail_width)/2],
					[0,  rail_width/2, -rail_height/2],
					[0,  rail_width/2,  rail_height/2],
					[0,             0, (rail_height + rail_width)/2],
					[0, -rail_width/2,  rail_height/2],

					[rail_len, -rail_width/2, -rail_height/2],
					[rail_len,             0, -(rail_height + rail_width)/2],
					[rail_len,  rail_width/2, -rail_height/2],
					[rail_len,  rail_width/2,  rail_height/2],
					[rail_len,             0,  (rail_height + rail_width)/2],
					[rail_len, -rail_width/2,  rail_height/2]

				],
				triangles = [
					[0, 1, 2, 3, 4, 5],
					[6, 7, 1, 0],
					[7, 8, 2, 1],
					[8, 9, 3, 2],
					[9,10, 4, 3],
					[10,11,5, 4],
					[11,6, 0, 5],
					[11, 10, 9, 8, 7, 6]
				],

				convexity = 2
			);

			// rail opening
			union() {
				translate (v=[rail_len/2+5, 0, 0]) {
					cube(size = [rail_len-20,rail_width+2,rail_screws], center = true);
				}

				translate (v=[15, 0, 0]) {
					rotate(a=[90,0,0]) {
						cylinder(h = rail_width+2, r = rail_screws/2, center = true);
					}
				}

				translate (v=[rail_len-5, 0, 0]) {
					rotate(a=[90,0,0]) {
						cylinder(h = rail_width+2, r = rail_screws/2, center = true);
					}
				}

			}
		}
	}
};

```


[User]
I'm looking to create a lithophane gallery, similar to the one I found on Thingiverse, but I need it to be parametric so I can easily adjust it for different numbers of images, sizes, and text. Here's a breakdown of what I want:

**Basic Layout:**

*   The gallery should consist of two rows of image panes.
*   The number of panes in the top row and bottom row should be independently adjustable using parameters (e.g. `top_row_count` and `bottom_row_count`). So I might have 3 images in the top row and 2 in the bottom, or just one row, or whatever.
*   Each image pane should hold a single image that will be used to create the lithophane effect.
*   There should be an option for a text pane below the image rows, which is also parameterized.

**Image Panes:**

*   The image panes should have a border around them. I need to be able to set the border thickness with a `pane_border` parameter.
*   The size of the image area within each pane (length/width) should be controlled by a parameter called `pane_size`. The images themselves should scale to fit this space.
*   The depth of the lithophane (how thick it is) should also be parameterizable, called `lithophane_depth`.

**Text Pane:**

*   The text pane should be optional, with a `text_lines` parameter to specify if I want 0, 1, or 2 lines of text.
*   Each line of text should be configurable with parameters like `top_text` and `bottom_text` (if two lines are selected).
*   The font should also be changeable using a `font_file` parameter. I need to be able to use .dxf files for fonts. Also, the text height with `text_height` and `letter_spacing` should be parameters.
*   The depth of the lettering can be controlled by `text_shade` parameter. 1 would be the deepest, 3 the shallowest.

**Hangers:**

*   The gallery should have hanger loops on top, and I need to be able to specify how many with a `hanger_count` parameter.
*   The size and thickness of the hanger loops (or holes) should be set by `hanger_opening` and `hanger_thickness` parameters.
*   The hanger loops should be positioned correctly above the lithophane panels.

**Other Parameters:**

*   `layer_height`: the layer height to simulate the thickness in the z direction of an FDM printer.
*   `number_of_layers`: used in conjunction with `layer_height` to calculate overall thickness.
*  `helper_disks`: whether to have helper disks on the corners, with a boolean parameter (true/false).

**Libraries:**
I'm happy to use the `write` library for writing the text to the pane, if that's helpful.

Basically, I want to be able to create a lithophane gallery that’s fully customizable, with controls for all those parameters.

[Assistant]
lithophane_gallery.scad:
```
/* Lithophane Gallery by Bob Hamlet 5/2/13
 * Based on Customizable Lithopane with More http://www.thingiverse.com/thing:78719
 *
 * Added support for multiple image panes.
 * Different type of hanger.
 * Rev 1 - adjustments to hanger placement, split tabs for upper and lower section. 5/24/13
 * Rev 2 - added the text pane to the bottom, minor difference bug fixes, fixed image height bug.  5/29/13
 * Rev 3 - added option for helper disks at outside corners, changed hanger depth to 1/2 total height. 6/1/13
 */

//use <write.scad>/////////////////////uncomment this line to use local copy/////////////////////////////////////////
use <write/Write.scad>/////////////comment out this line to use local copy//////////////////////////////////

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

/* [Top Row Images] */

// First image on top row. Load a 150x150 pixel image.(images will be stretched to fit)  Simple photos work best.  Don't forget to click the Invert Colors checkbox!
image1 = "image-surface.dat"; // [image_surface:150x150]
// Second image on top row.  Don't forget to click the Invert Colors checkbox!
image2 = "image-surface.dat"; // [image_surface:150x150]
// Third image on top row. Don't forget to click the Invert Colors checkbox!
image3 = "image-surface.dat"; // [image_surface:150x150]
// Last image on top row. Don't forget to click the Invert Colors checkbox!
image4 = "image-surface.dat"; // [image_surface:150x150]

/* [Bottom Row Images] */

// First image on bottom row. Don't forget to click the Invert Colors checkbox!
image5 = "image-surface.dat"; // [image_surface:150x150]
// Second image on bottom row. Don't forget to click the Invert Colors checkbox!
image6 = "image-surface.dat"; // [image_surface:150x150]
// Third image on bottom row. Don't forget to click the Invert Colors checkbox!
image7 = "image-surface.dat"; // [image_surface:150x150]
// Last image on bottom row. Don't forget to click the Invert Colors checkbox!
image8 = "image-surface.dat"; // [image_surface:150x150]

/* [Text Message Pane] */

//How many lines of text at the botttom?
Text_Lines = 0; //[0,1,2]
//Enter your first line message here:
Top_Text = "First Line";
//Enter your second line message here:
Bottom_Text = "Second Line";
//How dark do you want your lettering?
Shade=2;//[1:Dark,2:Medium,3:Light]
//Choose your font

font = "write/knewave.dxf";//[write/BlackRose.dxf:Black Rose,write/braille.dxf:Braille,write/knewave.dxf:Knewave,write/Letters.dxf:Letters,write/orbitron.dxf:Orbitron]
////////////////////////////////////////////comment out the above line to use local copy//////////////////////////////////
//font = "knewave.dxf";/////////////////////uncomment this line to use local copy/////////////////////////////////////////

//How tall do you want your letters?
Text_Height=6;//[4:8]
//Letter spacing you want?
Letter_Spacing=12;//[6:40]
space=Letter_Spacing/10;

/* [Layout and Hangers] */

//Images 1-4.  If you want less, don't load images into remaining slots.
top_row = 2; //[1,2,3,4]
//Images 5-8.  Load image 5 for first image on bottom row, regardless of number of top row images.
bottom_row = 0; //[0,1,2,3,4]
//Choose the number of hanger loops.
hangers = 2; //[0,1,2,3]

/* [Borders] */

hanger_opening = 5; //[2:10]
hanger_thickness = 2; //[2:10]
// Set value to zero for no border. (Not recommended)
pane_border = 1;//[0:3]

/* [Slicing and Printing] */

// What layer height will you slice this at?  The thinner the better.
layer_height = 0.1;
// The lower the layer height, the more layers you can use.  More layers means more even shading.
number_of_layers = 20; // [5:30]
//Do you want to include helper disks at the corners to help prevent lifting?
helper_disks=0;//[1:Yes,0:No]

/* [Hidden] */
images = [image1, image2, image3, image4, image5, image6, image7, image8];
s = 0.01; // used for difference
length = 75; // Surface / 2
min_height = layer_height*2;// base (white) will always be 2 layers thick
inhole_radius = hanger_opening/2;
outhole_radius = inhole_radius+hanger_thickness;
height = layer_height*number_of_layers+min_height;
hang_length = top_row*(length+pane_border)+pane_border-outhole_radius*2;
hang_height = length/2+pane_border;
topboxlen=top_row*(length+pane_border)+pane_border;
bottomboxlen=bottom_row*(length+pane_border)+pane_border;
longer=(topboxlen>bottomboxlen)?topboxlen:bottomboxlen;

assembly();

module assembly(){
	union(){
		if (bottom_row<1){
			toplayout(top_row);
			hangers();
			message(topboxlen);
			helpers(topboxlen,topboxlen);
		}
		else{
			translate([0,(length+pane_border)/2,0]){
				toplayout(top_row);
				hangers();
				helpers(topboxlen,longer);
			}
			translate([0,-(length+pane_border)/2,0]){
				bottomlayout(bottom_row);
				message(bottomboxlen);
				helpers(longer,bottomboxlen);
			}
		}
	} // end union
} // end assembly module

module toplayout(row){
	translate([-(row-1)*(length+pane_border)/2,0,0]){
		for(i=[1:row])translate([(i-1)*(length+pane_border),0,0])pane(images[i-1]);
	} // end translate
} // end toplayout module

module bottomlayout(row){
	translate([-(row-1)*(length+pane_border)/2,0,0]){
		for(i=[1:row])translate([(i-1)*(length+pane_border),0,0])pane(images[i+3]);
	} // end translate
} // end bottomlayout module

module pane(image){
	union() {
		// Cut off unwanted bottom portion
		difference(){
    		translate([0,0,min_height]) scale([.5,.5,height-min_height]) surface(file=image,center=true,convexity=5);
		// -
			translate([0,0,-height+min_height-s])linear_extrude(height=height-min_height+s)square(length+s,center=true);
		} // end difference
		// Make the frame and white base
		difference(){
			linear_extrude(height=height) square(length+(pane_border*2),center=true);
		// -
			translate([0,0,min_height])linear_extrude(height=layer_height*number_of_layers) square(length+s,center=true);
		} // end difference
	} // end union
} // end pane module

module hangers(){
if (hangers==1){u();}
if (hangers>1){
	translate([-(hang_length)/2,0,0]){
		for(i=[1:hangers])translate([(i-1)*(hang_length)/(hangers-1),0,0])
			u();
	} // end translate
} // end if
} // end hangers module

module u(){
render()
	translate([0,hang_height,0]){
		translate([0,hanger_thickness,0])disk();
		difference(){
			union(){
				translate([0,outhole_radius/2,height/4])cube([outhole_radius*2,outhole_radius,height/2],center=true);
				translate([0,outhole_radius,height/4])cylinder(h=height/2,r=outhole_radius,center=true,$fn=50);
			} // end union
		// -
			translate([0,outhole_radius/2,height/4-s])cube([inhole_radius*2,outhole_radius,height/2+2*s],center=true);
			translate([0,outhole_radius,height/4-s])cylinder(h=height/2+2*s,r=inhole_radius,center=true,$fn=50);
		} // end difference
	} // end translate
} // end module

module message(len){
	if (Text_Lines>0){
		difference(){
			translate([0,-hang_height-Text_Lines*Text_Height/2-1,height/2])cube([len,Text_Lines*Text_Height+2+2*pane_border,height],center=true);
			translate([0,-hang_height-Text_Lines*Text_Height/2-1+s,height/2+min_height])cube([len-2*pane_border+s,Text_Lines*Text_Height+2+s,height],center=true);
		} // end difference
		translate([space,-hang_height-(Text_Height/2+1/Text_Lines)+pane_border/2,height/Shade/2])write(Top_Text,font=font,t=height/Shade,h=Text_Height,space=space,center=true);
		if (Text_Lines>1){
			translate([space,-hang_height-0.5-Text_Height*1.5,height/Shade/2])write(Bottom_Text,font=font,t=height/Shade,h=Text_Height,space=space,center=true);
		} // end if
	} // end if
} // end module

module helpers(up,down){
	for(a=[0,1]){
		mirror([a,0,0]){
			translate([up/2,hang_height,0])disk();
			translate([down/2,-hang_height,0])disk();
		} // end mirror
	} // end for
} // end module

module disk(){
	translate([0,0,layer_height/2])cylinder(h=layer_height*helper_disks,r=hanger_opening+3*hanger_thickness,center=true,$fn=50);
}

```


[User]
I'm looking to create a parametric cable identifier that clips onto a cable, similar to an oscilloscope probe marker. I want to be able to adjust the cable diameter, clip opening, marker height, and wall thickness.

Basically, the design should be a cylindrical clip with a gap in it to allow it to snap onto the cable.  The clip should be cylindrical with a wall thickness, so it looks like a ring with a slice taken out of it. There should be a small flat face on the top of the clip for easier printing.

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

*   **`cable_diameter`**: The diameter of the cable that the clip will fit on (e.g. 4mm).
*   **`clip_opening_angle`**:  The angle of the gap, in degrees, which determines how wide the opening of the clip is (e.g., 60 degrees).
*   **`marker_height`**: The height or thickness of the clip along the axis of the cable (e.g. 1.5mm). This should be the dimension of the flat portion at the top of the clip.
*   **`wall_thickness`**: The thickness of the material surrounding the cable (e.g. 1mm).

I think the best way to get this done would be to subtract the geometry from a full cylinder to leave a gap and a thickness. I am not sure how to handle the clipping geometry - perhaps it will require some clever intersections of shapes?

I'd also like the cylinder to have a higher facet count so it prints with a reasonably smooth surface. Maybe 60 facets?

I think this can be accomplished with a single .scad file, and I'm not relying on any specific libraries to get the job done.

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

//Marker Height
MH=1.5;

//Cable Radius
CD=4;

//Wall thickness
WT=1;

//Opening (in degrees)
OD=60; //[10:160]

SLICE_SIZE=3.14*(CD)*2/360;

difference(){
	translate([0,0,MH/2])
		cylinder(h=MH, r=CD/2+WT,$fn=60,center=true); // screw hole
	translate([0,0,MH/2])
		cylinder(h=MH+1, r=CD/2,$fn=60,center=true); // screw hole
	for ( i = [1 : OD-1] )
	{
   	rotate(i, [0, 0, 1])
   	translate([(CD+1)/2, 0, (MH)/2])
   	cube([CD+1,SLICE_SIZE,MH+1], center=true);
	}
}
```


[User]
Hi! I'm looking to create a parametric polygonal box with a lid in OpenSCAD. I found this design online, but I'd like to have a fresh version with some improvements.

Here's what I'm aiming for:

The box should be based on a regular polygon, where the number of sides is configurable. I need to specify the following parameters:

*   `sides`: The number of sides of the polygon. This determines the shape of the base (and lid).
*   `thickness`: The thickness of the walls, base, and lid.
*   `diam`: The outside diameter of the box.
*   `boxh`: The height of the box itself.
*   `lidh`: The height of the lid.
*  `looseness`: A value to control the fit between the lid and box; a larger value means the lid is looser (i.e. has a bigger internal diameter).

I also want to be able to easily choose which parts are rendered using a `parts` parameter, this should allow for one of three options: "both", "box" and "lid" to allow the user to choose which parts to render individually or together.

I would like the code to be as clean and easily understandable as possible with clearly labelled variables. I think it would be a good idea to use the `difference()` and `union()` modules to build the shapes. I don't have any specific libraries in mind, but I'm open to suggestions if they would make the code better. Also, I'd like to avoid reliance on any external code or libraries for this (e.g. MCAD, BOSL, etc.). Could you help me put together an OpenSCAD file for this?

[Assistant]
N_sided_box_generator.scad:
```
//Parameterised N sided box
// Glyn Cowles July 2014
//Parts to print
parts = "both";//[both,box,lid]
//Thickness of sides
thickness=1;//[1:10]
//Outside diameter of box
diam=50;//[10:200]
//Height of box
boxh=25;//[5:150]
//Height of lid
lidh=10;//[3:20]
//Looseness factor of lid
looseness=10;//[0:20]
//Number of sides
sides=4;//[3:60]

$fn=sides;
loose=looseness/10; // ie looseness = 5 loose =0.5mm

assemble();

//-----------------------------------------------------------------------
module tube(d,h,th) {
rad=d/2;
difference() {
cylinder(h=h,r=rad);
cylinder(h=h,r=rad-th);
}
}
//-----------------------------------------------------------------------
module box() {
union(){
	tube(diam,boxh,thickness);
	tube(diam,thickness,diam);
}
}
//-----------------------------------------------------------------------

module lid(){
union() {
	tube(diam+thickness*2+loose,lidh,thickness);
	tube(diam+thickness*2+loose,thickness,diam+thickness*2+loose);
 }
}
//-----------------------------------------------------------------------
module assemble() {
if (parts=="box" || parts=="both")  box();
if (parts=="lid" || parts=="both") translate([diam+10,0,0]) lid();
};

```


[User]
I'm looking to create a parametric brick generator in OpenSCAD, similar to the one I have, but I need it to be more flexible and customizable, and use BOSL2 instead of doing everything from scratch. The design should allow for different brick styles, internal structures, connectors, and accessories.

Specifically, the core functionality should include:

**Brick Styles:**

*   **LEGO:** A classic LEGO-style brick with top connectors and an internal cavity.
*   **Solid Brick:** A simple solid rectangular brick.
*   **Honeycomb:** A brick with an internal honeycomb pattern.
*   **Cored Brick A:** A brick with cylindrical cores running vertically.
*   **Cored Brick B:** A brick with rectangular cores running vertically.

**Parameters:**

*   **Length:**  The length of the brick (in modules, where one module is 8mm) - adjustable from 1 to 10.
*   **Width:** The width of the brick (in modules, where one module is 8mm) - adjustable from 1 to 10.
*   **Height:** The height of the brick, with predefined values:
    *   "Normal" (9.6mm)
    *   "Flat" (3.2mm)
    *   "Total Flat" (1.7mm)
    *   "Double" (19.2mm)
*   **Connector Shape:** The shape of the top connector, with choices:
    *   "Circle"
    *   "Circle with Hole"
    *  "Triangle"
    *  "Square"
    *  "Pentagon"
    *  "Hexagon"
*   **Connector Angle:** A rotation angle for non-circular connectors, adjustable from 0 to 180 degrees.
*   **Internal Structure:** The internal support structure:
    *   "None": No internal support
    *   "Grid": A grid of intersecting walls
    *   "Cylinders": A pattern of support cylinders
*   **Accessories:**
    *   "None": No accessories.
    *   "Ring": A ring on one side of the brick, for use as a pendant/earring.
    *   "Holes": A hole on one side of the brick, also for use as a pendant/earring.
*  **Accessory Direction:** Orientation of ring/hole:
    *  "Horizontal": Along the length of the brick
    *  "Vertical": Along the width of the brick

**Additional Requirements:**

*   The design should utilize BOSL2 library for its modularity and features.
*   The module sizes should be related, but the code should be flexible enough to be easily modified for different module sizes
*   The LEGO brick should be a faithful recreation of typical LEGO dimensions.
*   The 'Ring' and 'Hole' accessories should be centered on the side face.
*   The 'Grid' and 'Cylinders' internal structures should fit within the internal space of the brick, respecting the wall thickness and overall dimensions.
*   The code should be well-commented.

It would be great if you could provide the OpenSCAD file(s) to achieve this design.

[Assistant]
Bricks.scad:
```
// Brick Creator
// by Javier Villarroel June 2014

//

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

/* [Creator] */

Style = "LEGO"; //[LEGO, Solid Brick, Honeycomb, Cored Brick A, Cored Brick B]

Lenght = 3; // [1:10]
Width  = 2; // [1:10]

height = 9.6; // [9.6:Normal, 3.2:Flat, 1.7:Total Flat, 19.2:Double]

/* [Extras] */

Connector = "Circle"; // [Circle, Circle with Hole, Triangle, Square, Pentagon, Hexagon]

Angle = 0; // [0:180]

Internal_Structure = "Cylinders"; //[None, Grid, Cylinders]

Accesories = "None"; //[None, Ring, Holes]
Direction = 0; //[0:Horizontal, 1:Vertical]

/* [Hidden] */

P = 8;
conectorR = 2.5;
conectorH = 2.8;
tolerance = 0.2;
wall = 1.2;

module conector(){
	if(Connector=="Circle"){
		cylinder(r=conectorR, h=conectorH , $fn=100);
	} else if(Connector=="Circle with Hole"){
		difference(){
			cylinder(r=conectorR, h=conectorH , $fn=50);
			translate([0,0,0.1])
			cylinder(r=conectorR-0.6, h=conectorH+0.1 , $fn=50);
		}
	} else if(Connector=="Triangle"){
		rotate([0,0,Angle]) cylinder(r=conectorR, h=conectorH , $fn=3);
	} else if(Connector=="Square"){
		rotate([0,0,Angle]) cylinder(r=conectorR, h=conectorH , $fn=4);
	} else if(Connector=="Pentagon"){
		rotate([0,0,Angle]) cylinder(r=conectorR, h=conectorH , $fn=5);
	} else if(Connector=="Hexagon"){
		rotate([0,0,Angle]) cylinder(r=conectorR, h=conectorH , $fn=6);
	}

}

module internalStructure(){
	if (Internal_Structure == "Grid"){
		if(Lenght > 1){
		for (i = [0 : Lenght-2]){
			translate([(wall+conectorR*2+0.6)+P*i,0,0])
			cube([wall*2,Width*P-tolerance,height]);
		}}
		if(Width > 1){
		for (j = [0 : Width-2]){
			translate([0,(wall+conectorR*2+0.6)+P*j,0])
			cube([P*Lenght-tolerance,wall*2,height]);
		}}

	} else if (Internal_Structure == "Cylinders"){
		if(Lenght > 1 && Width > 1){
			difference(){
				union(){
					for (i = [0 : Lenght-2]){
						translate([(wall*1.75+conectorR*2+0.6)+P*i,0,0])
						cube([wall/2,Width*P-tolerance,height]);
					}
					for (j = [0 : Width-2]){
						translate([0,(1.75*wall+conectorR*2+0.6)+P*j,0])
						cube([P*Lenght-tolerance,wall/2,height]);
					}
					for (i = [1 : Lenght-1]){
						for (j = [1 : Width-1]){
							translate([P*i,P*j,0])
							cylinder(r=conectorR+0.8, h=height-0.9 , $fn=40);
						}
					}
				}
				for (i = [1 : Lenght-1]){
					for (j = [1 : Width-1]){
						translate([P*i,P*j,-0.1])
						cylinder(r=conectorR, h=height-0.9 , $fn=40);
					}
				}

			}
		}
	}

}

module legoBrick(){
	union(){
		difference() {
			union() {
			cube([P*Lenght-tolerance,Width*P-tolerance,height]);
				{
					for (i = [0 : Lenght-1]){
						for (j = [0 : Width-1]){
							translate([3.9+i*P,3.9+j*P,height])
							conector();
						}
					}

				}
			}
			if(height > 1.7){
			translate([wall-0.1,wall-0.1,-0.1])
			cube([P*Lenght-tolerance-2*wall,Width*P-tolerance-2*wall,height-0.9]);}
		}
		internalStructure();
	}
}

module Ring(){
	translate([0,Width/2*P,height/2])
	if(Direction == 1){
		difference(){

			rotate([90,0,0])
			rotate_extrude(convexity = 10, $fn=100)
			translate([2.8, 0, 0])
			circle(r = 0.8, $fn = 100);

			translate([1,-4.5,-2])
			cube([4,9,4]);
		}
	} else {
		difference(){
			//rotate([90,0,0])
			rotate_extrude(convexity = 10, $fn=100)
			translate([2.8, 0, 0])
			circle(r = 0.8, $fn = 100);

			translate([1,-4.5,-2])
			cube([4,9,4]);
		}
	}

}

module Hole(){
	translate([0,Width/2*P,height/2])
	if(Direction == 1){
		rotate([90,0,0])
		rotate_extrude(convexity = 10, $fn=100)
		translate([2, 0, 0])
		circle(r = 0.8, $fn = 100);
	} else {
		rotate_extrude(convexity = 10, $fn=100)
		translate([2, 0, 0])
		circle(r = 0.6, $fn = 100);
	}
}

module solidBrick(){
	difference(){
		cube([Lenght*P, Width*P, height]);
		union(){
			translate([wall,wall,-0.1])
			cube([Lenght*P-wall*2, Width*P-wall*2, 0.6]);
			translate([wall,wall,height-0.5])
			cube([Lenght*P-wall*2, Width*P-wall*2, 0.6]);
		}
	}
}

module coredBrickA(){
	difference(){
		cube([Lenght*P, Width*P, height]);
		union(){
			for(i = [0 : Lenght-1]){
				for(j = [0 : Width-1]){
					translate([P*i+P/2,P*j+P/2,-0.1])
					cylinder(r=2.7, h=height + 0.2 , $fn=40);
				}
			}
		}
	}

}

module coredBrickB(){
	difference(){
		cube([Lenght*P, Width*P, height]);
		union(){
			for(i = [0 : Lenght-1]){
				translate([P*i+3*wall/2,3*wall/2,-0.1])
				cube([P-wall*3,Width*P-wall*3,height+0.2]);
			}
		}
	}
}

module honeycomb(){
	union(){
		difference(){
			cube([Lenght*P, Width*P, height]);
			union(){
				for(i = [0 : Lenght]){
					for(j = [0 : Width + 1]){
						translate([3*P/2*i,P/2*1.7*j,-0.1])
						cylinder(r=3.5, h=height + 0.2 , $fn=6);
						translate([3*P/2*i+P/2*1.5,P/2*1.7*j+P/2*0.8,-0.1])
						cylinder(r=3.5, h=height + 0.2 , $fn=6);
					}
				}
			}
		}
		difference(){
			cube([Lenght*P, Width*P, height]);
			translate([1,1,-0.2])
			cube([Lenght*P-2, Width*P-2, height+0.4]);
		}
	}
}

module brick(){
	if(Style == "LEGO"){
		legoBrick();
	} else if(Style == "Solid Brick"){
		solidBrick();
	} else if(Style == "Cored Brick A"){
		coredBrickA();
	} else if(Style == "Cored Brick B"){
		coredBrickB();
	} else if(Style == "Honeycomb"){
		honeycomb();
	} else {

	}

}

//legoBrick();

if(Accesories == "None"){
	brick();
} else if(Accesories == "Ring") {
	union(){
		brick();
		Ring();
	}
} else if(Accesories == "Holes") {
	difference(){
		brick();
		Hole();
	}
}

```


[User]
I'm looking to create a parametric "Big Red Button" design in OpenSCAD, and I'd like your help crafting the code. I've got some ideas and a basic structure in mind, but I need the code to be flexible and easy to customize.

Here's what I'm envisioning:

**Overall Structure:**

*   The button will consist of three main parts: a base, a dome-shaped button, and an optional bottom piece.
*   The base will have a cylindrical shape with some internal structural elements (ribs) to add strength.
*   The dome will sit on top of the base and have a spherical outer shape. It will also have a cylindrical plunge section for pressing.
*   The bottom piece (optional) is intended to finish off the design and provide mounting points.
* I would like the ribs in the base and dome to be evenly spaced and parameterized.

**Key Parameters:**

I want these aspects to be easily adjustable using variables:

*   `sphereRadius`: Radius of the dome's sphere.
*   `thickness`: General wall thickness.
*  `switchbaseheight`: Height of the switch platform within the base.
*   `switchtotalheight`: Total height of the switch mechanism within the dome.
*   `switchbuttondiameter`: Diameter of the button's plunge cylinder.
*   `switchtravel`: Distance the button can be pressed (vertical travel).
*   `switchlenwid`: The width of the rectangular switch support inside the base.
*   `meltage`:  A small allowance for manufacturing inaccuracies or the heat of melting during 3D printing.
*   `ridge`: Radial distance from the inner diameter of the base to where the ribs begin.
*   `chamfer_radius`: Radius of the chamfer on the base.
*   `domeText`: Text to be placed on the dome's surface (optional, should be able to be empty).
*   `microSwitch`: A boolean that when true should allow for a microswitch. If false, a rectangular mounting will be provided as in the attached file.
* `microSwitchHeight`: Height of microswitch module.
* `microSwitchWidth`: Width of microswitch module.
* `microSwitchLength`: Length of microswitch module.

**Base Details:**

*   The base should be a cylinder with a hollowed-out interior.
*   The base should have a supporting lip where the dome rests.
*  There should be a support for a switch, either rectangular or supporting the microswitch.
*   There will be three ribs providing support inside the base. The inner part of these ribs should be cylindrical and then be flattened out to meet the wall.
*   There should be a chamfer on the top edge of the base.

**Dome Details:**

*   The dome should be a hollowed-out sphere.
*   It should have a cylindrical hole for the plunge part of the button. The travel of the button should be adjustable.
*   I'd like to embed text into the surface of the dome, but this should be optional. The position and rotation of the text should be parameterizable.
*   There should be three ribs providing support inside the dome that match the ribs in the base. The inner part of these ribs should be cylindrical and then be flattened out to meet the wall.

**Bottom Details:**

*   The bottom should be a cylinder with a slightly larger diameter than the base.
*   It should attach to the base.
*   If microSwitch is true, there should be supports for the microswitch module.
*   If microSwitch is false, there should be a rectangular support.
* I'd like to include some text in the bottom piece, like a copyright notice, but this should be optional.
*   The bottom piece should have the same three ribs.

**Other Considerations:**

*   I'd like all the parts to fit together correctly with a little bit of clearance for assembly.
*   I'd like to ensure that the code is well commented, so that it's easy to understand and modify.
* The text on the dome should follow the curve of the dome.
* I would like to use the Liberation Sans font for most of the text elements, but Liberation Mono for the dome text.

Could you generate the appropriate OpenSCAD code for this design? I'm hoping for a modular design where the base, dome, and bottom parts are separate modules. I'd like to make use of the `rotate_extrude` function. I do not need to use any libraries for this.

[Assistant]
emerg_switch.scad:
```
$fn=80;
sphereRadius=35;
thickness=1;
switchbaseheight=3.61;
switchtotalheight=9.5;
switchbuttondiameter=3.51;
switchtravel=.012 * 25.4;
switchlenwid=5.99;
meltage=.25;
ridge=6;
chamfer_radius =.75;
domeText="STOP";
domeLength = len(domeText);

outerdiam = (sphereRadius + ridge  + meltage)*2;
innerdiam = (sphereRadius + ridge - meltage)*2-thickness;

module base() {
	union() {
		 difference() {
			translate([0,0,thickness]) cylinder(d=outerdiam,h=switchtotalheight+thickness);
			translate([0,0,thickness]) cylinder(d=innerdiam,h=switchtotalheight+thickness);
			rotate([0,0,90])translate([innerdiam/2-thickness,0,switchtotalheight]) rotate([0,90,0]) cylinder(d=thickness*2,h=3);
		}

		difference() {
			linear_extrude(thickness*2) difference() {
				circle(outerdiam/2);
				circle(sphereRadius+meltage);
			}
			// chamfer
			rotate_extrude() translate([outerdiam/2-chamfer_radius*2, 0, switchtotalheight+thickness*2-chamfer_radius*2]) difference() {
				square(chamfer_radius*2);
				translate([0,chamfer_radius*2]) circle(chamfer_radius*2);
			}
		}

		render(2) for (angle=[0:120:359]) difference() {
			rotate(angle) translate([(innerdiam-ridge)/2+thickness,0,thickness]) cylinder(d=5.5,h=switchtotalheight+thickness);
			rotate(angle) translate([(innerdiam-ridge)/2+thickness,0,thickness*2]) cylinder(d=4,h=switchtotalheight);
		}
	}
}

module dome() {
	union() {
		difference() {
			sphere(r=sphereRadius);
			sphere(r=sphereRadius-thickness);
			translate([-sphereRadius,-sphereRadius,0]) cube([2*sphereRadius,2*sphereRadius,sphereRadius]);
		}
		difference() {
			translate([0,0,-sphereRadius+.5]) cylinder(d=switchbuttondiameter+thickness*3+meltage,h=sphereRadius + thickness*2-.5);
			translate([0,0,thickness*2-switchtravel/2-meltage]) cylinder(d=switchbuttondiameter+meltage,h=switchtravel/2+meltage);
		}

		difference() {
			linear_extrude(thickness*2) difference() {
				circle(sphereRadius+ridge-thickness-meltage*2);
				circle(sphereRadius-thickness-meltage);
			}
			for (angle=[0:120:359]) difference() {
			rotate(angle) translate([(innerdiam-ridge)/2+thickness,0,0]) cylinder(d=ridge+thickness*2,h=switchtotalheight+thickness);
			}
		}

			for (idx = [0:domeLength]) {
				rotate([-4,210-idx*63/domeLength,0]) translate([0,0,sphereRadius-thickness/2]) rotate([-5,7,180]) linear_extrude(thickness*2+meltage) text(t=domeText[idx],font="LiberationSans",size=10);
			}
	}
}

module switch() {
	union() {
		translate([-switchlenwid/2 -meltage,-switchlenwid/2-meltage,0]) cube([switchlenwid+meltage*2,switchlenwid+meltage*2,switchbaseheight]);
		translate([-switchlenwid/2 -meltage-2.2,-switchlenwid/2-meltage+1.1,0]) cube([2.2,1.1,1]);
		translate([-switchlenwid/2 -meltage-2.2,switchlenwid/2-meltage-1.1,0]) cube([2.2,1.1,1]);
		translate([switchlenwid/2 +meltage,-switchlenwid/2-meltage+1.1,0]) cube([2.2,1.1,1]);
		translate([switchlenwid/2 +meltage,switchlenwid/2-meltage-1.1,0]) cube([2.2,1.1,1]);
		cylinder(d=switchbuttondiameter, h=switchtotalheight);
	}
}

module bottom() {
	render(2) difference() {
		cylinder(d=outerdiam, h=thickness*2);
		for (angle=[0:120:359]) difference() {
			rotate(angle) translate([(innerdiam-ridge)/2+thickness,0,0]) cylinder(d=4,h=switchtotalheight);
		}
		#rotate([0,0,90])translate([0,0,thickness]) switch();
		translate([-switchlenwid/2 -meltage,-innerdiam/2+switchlenwid/2-thickness,thickness]) cube([switchlenwid+meltage*2,innerdiam/2-switchlenwid-meltage*2,1]);
		translate([-innerdiam/2+18,innerdiam/2-18,thickness]) linear_extrude(thickness) text($fn=40, t="© 2014 Robert ◊",size=4,font="LiberationSans");
		translate([-innerdiam/2+15,innerdiam/2-25,thickness]) linear_extrude(thickness) text($fn=40, t="All Rights Reserved",size=4,font="LiberationSans");
	}
}

//base();
translate([0,0,-thickness*2]) dome();
//translate([0,0,switchtotalheight+thickness*5]) rotate([180,0,0])
	//bottom();
//switch();

```
emerg_switch.scad:
```
$fn=80;
sphereRadius=35;
thickness=1;
switchbaseheight=3.61;
switchtotalheight=9.5;
switchbuttondiameter=3.51;
switchtravel=.012 * 25.4;
switchlenwid=5.99;
meltage=.25;
ridge=6;
chamfer_radius =.75;
domeText="STOP";
microSwitch=true;
microSwitchHeight = 10;
microSwitchWidth = 5.8;
microSwitchLength = 12.8;
domeLength = len(domeText);

outerdiam = (sphereRadius + ridge  + meltage)*2;
innerdiam = (sphereRadius + ridge - meltage)*2-thickness;

module base() {
	union() {
		 difference() {
			translate([0,0,thickness]) cylinder(d=outerdiam,h=switchtotalheight+thickness);
			translate([0,0,thickness]) cylinder(d=innerdiam,h=switchtotalheight+thickness);
			rotate([0,0,90])translate([innerdiam/2-thickness,0,switchtotalheight]) rotate([0,90,0]) cylinder(d=thickness*2,h=3);
		}

		difference() {
			linear_extrude(thickness*2) difference() {
				circle(outerdiam/2);
				circle(sphereRadius+meltage);
			}
			// chamfer
			rotate_extrude() translate([outerdiam/2-chamfer_radius*2, 0, switchtotalheight+thickness*2-chamfer_radius*2]) difference() {
				square(chamfer_radius*2);
				translate([0,chamfer_radius*2]) circle(chamfer_radius*2);
			}
		}

		render(2) for (angle=[0:120:359]) difference() {
			rotate(angle) translate([(innerdiam-ridge)/2+thickness,0,thickness]) cylinder(d=5.5,h=switchtotalheight+thickness);
			rotate(angle) translate([(innerdiam-ridge)/2+thickness,0,thickness*2]) cylinder(d=4,h=switchtotalheight);
		}
	}
}

module dome() {
	translate([0,0,-thickness*2]) union() {
		difference() {
			sphere(r=sphereRadius);
			sphere(r=sphereRadius-thickness);
			translate([-sphereRadius,-sphereRadius,0]) cube([2*sphereRadius,2*sphereRadius,sphereRadius]);
		}
		difference() {
			translate([0,0,-sphereRadius+thickness/2]) cylinder(d=switchbuttondiameter+thickness*2+meltage,h=sphereRadius+thickness*2-meltage*2);
			translate([0,0,thickness*2-switchtravel-meltage/2]) cylinder(d=switchbuttondiameter+meltage,h=switchtravel+meltage);
			if (microSwitch) {
				render(2) translate([0,0,-microSwitchHeight]) {
					rotate_extrude() polygon(points=[[.5,0],[switchbuttondiameter+thickness*2+meltage,3],[switchbuttondiameter+thickness*2+meltage,0]]);
				}
			}
		}

		difference() {
			linear_extrude(thickness*2) difference() {
				circle(sphereRadius+ridge-thickness-meltage*2);
				circle(sphereRadius-thickness-meltage);
			}
			for (angle=[0:120:359]) difference() {
			rotate(angle) translate([(innerdiam-ridge)/2+thickness,0,0]) cylinder(d=ridge+thickness*2,h=switchtotalheight+thickness);
			}
		}

			for (idx = [0:domeLength]) {
				rotate([-4,205-idx*55/domeLength,0]) translate([0,0,sphereRadius-thickness/2]) rotate([-5,7,180]) linear_extrude(thickness*2+meltage) text(t=domeText[idx],font="LiberationMono",size=10);
			}
	}
}

module switch() {
	union() {
		translate([-switchlenwid/2 -meltage,-switchlenwid/2-meltage,0]) cube([switchlenwid+meltage*2,switchlenwid+meltage*2,switchbaseheight]);
		translate([-switchlenwid/2 -meltage-2.2,-switchlenwid/2-meltage+1.1,0]) cube([2.2,1.1,1]);
		translate([-switchlenwid/2 -meltage-2.2,switchlenwid/2-meltage-1.1,0]) cube([2.2,1.1,1]);
		translate([switchlenwid/2 +meltage,-switchlenwid/2-meltage+1.1,0]) cube([2.2,1.1,1]);
		translate([switchlenwid/2 +meltage,switchlenwid/2-meltage-1.1,0]) cube([2.2,1.1,1]);
		cylinder(d=switchbuttondiameter, h=switchtotalheight);
	}
}

module bottom() {
	difference() {
		union() {
			cylinder(d=outerdiam, h=thickness*2);
			if (microSwitch) {
				translate([-thickness,-microSwitchLength/2,0]) {
					translate([-microSwitchWidth/2 - meltage - thickness,microSwitchLength/2-3,thickness*2]) cube([thickness*2,microSwitchLength,microSwitchHeight]);
					translate([microSwitchWidth/2 + meltage + thickness,microSwitchLength/2-3,thickness*2]) cube([thickness*2,microSwitchLength,microSwitchHeight]);
				}
			}
		}
		for (angle=[0:120:359]) difference() {
			rotate(angle) translate([(innerdiam-ridge)/2+thickness,0,0]) cylinder(d=4,h=switchtotalheight);
		}
		if (microSwitch) {
			translate([0,-1.32-meltage/2,0]) cylinder(r=.6+meltage,h=thickness*2);
			translate([0,3.76-meltage/2,0]) cylinder(r=.6+meltage,h=thickness*2);
			translate([0,8.84-meltage/2,0]) cylinder(r=.6+meltage,h=thickness*2);
			translate([-microSwitchWidth/2 - meltage - thickness*2,.15,1.5+thickness*2]) rotate([0,90,0]) cylinder(r=1+meltage,h=thickness*2);
			translate([microSwitchWidth/2 + meltage,.15,1.5+thickness*2]) rotate([0,90,0]) cylinder(r=1+meltage,h=thickness*2);
			translate([-microSwitchWidth/2 - meltage - thickness*2,6.65,1.5+thickness*2]) rotate([0,90,0]) cylinder(r=1+meltage,h=thickness*2);
			translate([microSwitchWidth/2 + meltage,6.65,1.5+thickness*2]) rotate([0,90,0]) cylinder(r=1+meltage,h=thickness*2);
		} else {
			#rotate([0,0,90])translate([0,0,thickness]) switch();
			translate([-switchlenwid/2 -meltage,-innerdiam/2+switchlenwid/2-thickness,thickness]) cube([switchlenwid+meltage*2,innerdiam/2-switchlenwid-meltage*2,1]);
		}

		translate([-innerdiam/2+18,innerdiam/2-15,thickness]) linear_extrude(thickness) text($fn=40, t="© 2014 Robert ◊",size=4,font="LiberationSans");
		translate([-innerdiam/2+15,innerdiam/2-22,thickness]) linear_extrude(thickness) text($fn=40, t="All Rights Reserved",size=4,font="LiberationSans");
	}
}

//base();
translate([0,0,thickness*5]) dome();
//translate([0,0,switchtotalheight+thickness*5]) rotate([180,0,0])
	//bottom();
//switch();

```


[User]
Hi, I'm looking to create a 3D printable extension for my weather station's rain gauge. It's a common problem that the original cover isn't deep enough and rain can bounce out, leading to inaccurate readings. I've seen people glue two covers together, but I'd rather print a custom extension.

I've already messed around with some code (attached), but I want to make sure this is robust. I want to be able to customize the key dimensions: the height of the extension, the wall thickness, the corner radius (inside), and the overall inside length and width. The base of the extension should be an open rectangular volume with rounded corners, and the top of the part should be an open volume that mates with the base. Think of it as an open-ended box with rounded corners.

Essentially, I want a parametric design that lets me easily tweak the dimensions using variables for:

*   `H` : Total Height of the extension (probably in mm)
*   `W` : Wall Thickness (mm)
*  `R` : Inner Corner Radius (mm)
*   `L` : Inner Length (mm)
*   `B` : Inner Width (mm)

I'd like the design to be based on Minkowski sums using a cube and cylinder for each layer to achieve those rounded corners and to generate both the inner and outer dimensions with a single pass, like I attempted in my original code. I think this is the most elegant way to do it. Is that a good approach, or is there a better way?

I think that's all the important stuff. I want the main file to take care of all of the generation so I don't have to manually build anything. Could you generate an OpenSCAD file for me that implements that, please?

[Assistant]
rain_gauge_extension.scad:
```
//Rain Gauge Extension
//Designed by Bryscus: Bryce B.

//Most measurements are for the inside dimensions
//since in this case those are the dimensions
//that really matter.

//Height
H=38.1;

//Wall thickness
W=3;

//Inside Corner radius
R=5.08;

//Inside Length
L=109.5;

//Inside Width
B=49.5;

difference(){
translate([R+W,R+W,0])
minkowski(){
	cube([L-2*R,B-2*R,H/2]); // Outside
	cylinder(r=R+W, h=H/2,$fn=60);
	}
translate([R+W,R+W,-1])
minkowski(){
	cube([L-2*R,B-2*R,H/2]); // Inside
	cylinder(r=R, h=H/2+2,$fn=60);
	}
}

//cube([115.5,55.5,H]); //Minkowski Sanity Check
//Since Minkowski does weird things, this is a
//way to guarantee that the dimensions sought
//after are what we actually get
```


[User]
I need a parametric design for a loom bracelet holder, something that can hold multiple rows of bracelets. I've got some basic measurements figured out, but I want the design to be flexible.

Here's what I'm thinking:

*   **Base Shape:** The holder should consist of a series of connected rectangular base sections. Each section should be able to hold a row of bracelets.
*   **Dimensions:** Each base section should be roughly 34/3*2 mm wide, 35.25 mm deep, and 1.6 mm thick.
*   **Side Supports:** On the sides of each base section, I want to include supports that help keep the bracelets from sliding off. These should be about 9.8mm wide and 38.05mm deep, extending 1.4mm below the main surface and also sitting on top of the 1.6mm thick base section, and they should be offset 4mm in from the edge of the main section. The side supports should terminate at circular supports on both top and bottom, like short pillars. The circular supports should have a radius of 4.9mm and also a height of 1.6mm. The circular supports should have a small lip on them, extending 8.1mm down, going from a 3mm radius to a 2.8mm radius. They should also have a similar feature in the center of each support.
*   **Internal Supports:** There should also be internal supports within each base section to help strengthen it, spaced approximately 2.5mm and 13.8 mm from the edge of the main section, with a width of 1.5mm, a depth of 35.25mm and a height of 10.9mm.
*   **Support Undercuts:**  These internal supports should be undercut with a central cavity extending from 16.025mm to 19.775 mm deep, going from the front side to the back, and with a width of 3.75mm and a height of 5.7 mm with an offset of 5.3mm below the top of the supports.
*   **Number of Rows:** The design should be parametric so I can easily specify how many rows (base sections) I want.
*   **Parametric Control:** I’d like to control the number of rows using a `numerical_slider` variable. The value of this variable should determine how many rows are generated.

I'm looking for a complete OpenSCAD file or files using only the standard OpenSCAD library; no need to use any external libraries like BOSL. Please try to keep the code easy to understand and modify.

[Assistant]
houder.scad:
```
// number of faces in circle
$fn=24;

// number of rows
numerical_slider = 1; // [0:10]

for ( i = [1 : numerical_slider] )
{
translate([i*(34/3*2),0,0])
union()
	{
		cube([(34/3*2),35.25,1.6]);
		translate([4,-1.4,0])cube([9.8,38.05,1.6]);
		translate([8.9,-1.4,0])cylinder(h = 1.6, r=4.9);
		translate([8.9,36.65,0])cylinder(h = 1.6, r=4.9);

		translate([8.9,-1.4,0])cylinder(h = 8.1, r1=3, r2=2.8);
		translate([8.9,36.65,0])cylinder(h = 8.1, r1=3, r2=2.8);
		translate([8.9,17.625,0])cylinder(h = 8.1, r1=3, r2=2.8);

		difference() {
		union() {
		translate([2.5,0,0])cube([1.5,35.25,10.9]);
		translate([13.8,0,0])cube([1.5,35.25,10.9]);
		}
		translate([0,16.025,5.3])cube([35.25,3.75,5.7]);
		}
	}

}
```


[User]
I'm looking to design a custom mount for my bike that will attach to the frame tube and hold another cylindrical object, like a light or action camera. The tricky part is that I have cables running along the bottom of my bike's frame tube, so the mount needs to have a gap to allow clearance for those cables. I want the mount to be in two pieces that can be joined together, and it's important that it's parametric, so I can adjust it for different tube diameters and mounting object diameters.

Here are the basic parameters I'm thinking of:

*   **`wall_thickness`**: The thickness of the material around the tube and mounting object.
*   **`tube_diam`**: The diameter of the bike frame tube.
*   **`mount_diam`**: The diameter of the object being mounted.
*   **`cable_clearance_x`**: The horizontal gap width for the cables.
*   **`cable_clearance_y`**: The vertical gap height for the cables.
*  **`gap_width`**: The width of the gap that splits the mount into two pieces. This should extend all the way through the mount on the XY plane
*   **`mount_height`**: The overall height of the mount.
*   **`screw_hole_diam`**: The diameter of the screw holes for threading.
*   **`screw_hole_diam_big`**: The diameter of the screw holes for free fit.
*   **`screw_head_diam`**: The diameter of the screw heads.

The mount should have two sets of screw holes - one set near the frame tube and another set near the cable clearance gap, with one of the screw holes being sized for threads and the other being a clearance hole, and these should be alternated vertically between each set. I was thinking we could use a `hexagon` for those holes rather than a circle, that'd be cool. The mount should also have some hexagonal reinforcing ribs between the tube and the mount, and a circular reinforced section between the cable gap and the mounting circle.

I'd like the design to use the MCAD library, specifically `units.scad` and `shapes.scad`, for consistency and convenience.

[Assistant]
bike_lock_mount_customizer.scad:
```
include <MCAD/units.scad>
include <MCAD/shapes.scad>

// Created by frontier204 for Thingiverse
// July 2014

// Thickness of the walls between the holes and the item
wall_thickness = 5;			// [3:10]
// Diameter of the tube
tube_diam = 44.064;
// The diameter of the item to be mounted
mount_diam = 16.75;
// Air gap between the tube and the item to mount, in case there are things like cables to clear, in X
cable_clearance_x = 9.525;
// Air gap in y
cable_clearance_y = 22.225;
// The gap to make this into two pieces
gap_width = 1;
// How high the entire structure is
mount_height = 25.4;
// diameter of the screw holes if you want to be able to thread the screw
screw_hole_diam = 3.175;
// diameter of the screw holes for a free fit
screw_hole_diam_big = 4.365;
// diameter of the head of the screws
screw_head_diam = 6.35;
// big number to just clear everything
BIG_NUMBER = 10000*1;

// creates this, centred where the tube goes, and extends in +X

item();

module item() {
// where the screws closest to the tube will go
top_screws_offset = -(tube_diam/2 + wall_thickness*2 + screw_head_diam/2);
//where the mount goes
mount_offset = top_screws_offset - screw_head_diam/2 - wall_thickness - mount_diam/2;
// the size of the mount nearest the mount, which sticks in by one wall
// thickness
neartube_mount_size = wall_thickness*3+screw_head_diam;
// the size of the box between the tube and the mount
midway_box_x = wall_thickness*2+screw_head_diam + cable_clearance_x/2;
// where the screws go near the cable clearance box
midway_screws_offset = tube_diam/2 + cable_clearance_x + wall_thickness + screw_head_diam/2;

difference() {
	union() {
		// main wall around the tube
		cylinder(r=tube_diam/2+wall_thickness, h=mount_height, $fn=256);
		// mount for screws closest to the tube
		translate([-(neartube_mount_size/2+tube_diam/2),0,mount_height/2])
		box(neartube_mount_size,wall_thickness*2,mount_height);
		// reinforcements
		translate([-(tube_diam/2+wall_thickness/2),0,mount_height/2])
		hexagon(wall_thickness*3,mount_height);
		// box between the gap and the thing to mount (midway mount)
		translate([tube_diam/2 + midway_box_x/2, 0, mount_height/2])
		box(midway_box_x, cable_clearance_y+wall_thickness*2, mount_height);
		// reinforcements
		translate([tube_diam/2-wall_thickness/2 + midway_box_x + screw_head_diam/2, 0, 0])
		scale([cable_clearance_y/tube_diam,1,1])
		cylinder(r=(wall_thickness*2+cable_clearance_y)/2, h=mount_height, $fn=16);
		// main wall around the thing to mount
		translate([mount_offset,0,0])
		cylinder(r=mount_diam/2+wall_thickness,h=mount_height, $fn=256);
	}
	// hole for the tube
	cylinder(r=tube_diam/2, h=BIG_NUMBER, $fn=256, center=true);
	// screw holes near the tube
	translate([top_screws_offset,0,0])
	alternating_screw_holes();
	// the cable clearance gap
	translate([tube_diam/2,0,0])
	box(wall_thickness, cable_clearance_y, BIG_NUMBER);
	translate([(tube_diam+cable_clearance_x)/2,0,0])
	box(cable_clearance_x, cable_clearance_y, BIG_NUMBER);
	// screw holes near the gap
	translate([midway_screws_offset,0,0])
	alternating_screw_holes(-1);
	// thing to mount hole
	translate([mount_offset,0,0])
	cylinder(r=mount_diam/2,h=BIG_NUMBER,center=true, $fn=256);
	// gap
	box(BIG_NUMBER, gap_width, BIG_NUMBER);
}

module alternating_screw_holes( alternate_factor = 1 ) {
	translate([0,0,mount_height*1/4]) {
		rotate([90,0,0])
		hexagon(screw_hole_diam, BIG_NUMBER);
		translate([0,alternate_factor*BIG_NUMBER/2,0])
		rotate([90,0,0])
		hexagon(screw_hole_diam_big, BIG_NUMBER);
	}
	translate([0,0,mount_height*3/4]) {
		rotate([90,0,0])
		hexagon(screw_hole_diam, BIG_NUMBER);
		translate([0,alternate_factor*-BIG_NUMBER/2,0])
		rotate([90,0,0])
		hexagon(screw_hole_diam_big, BIG_NUMBER);
	}
}

}
```


[User]
I'd like to design a circular bed leveling pattern for 3D printing, and I want it to be customizable. I envision a series of concentric rings, some near the outer edge and some closer to the center, with radial cuts going through them. I've seen some examples and would like to be able to control quite a few parameters.

Specifically, I'd like these things to be customizable:

*   **Overall Diameter:** The diameter of the entire pattern.
*   **Center Ring Diameter:** The diameter of the innermost rings.
*   **Object Height:** The overall height of the printed object.
*   **Ring Thickness:** The thickness of each individual ring.
*   **Ring Spacing:** The distance between the rings.
*   **Cut Thickness:** The thickness of the radial cuts.
*  **Number of Outer Rings:** The number of rings near the outside edge.
*   **Number of Inner Rings:** The number of rings closer to the center.
*   **Number of Cuts:** The number of radial cuts.
*  **Initial Cut Angle:** The angle of the first cut (the others should be evenly spaced around).
*  **Ring Facets:** I want to control the fineness of the rings by setting `$fn` for circles and cylinders.

I'd prefer a single OpenSCAD file if that's possible, and I'm not using any specific libraries. Can you help me generate the SCAD file?

[Assistant]
Circlebedlevel_v2.scad:
```
// Circular bed leveling print version 2, for Thingiverse
// frontier204

// Major diameter of the whole object
objDiam = 137;
// Size of the rings closest to the middle
centerRingsDiam = 50;
// Height of the object (multiple of layer height)
height  = 0.30;

// Thickness of the rings to place
ringthickness = 2;

// Spacing between the rings
ringspacing = 2;

// For cuts to clear everything
bignumber = 100000*1;

// Size of the cuts going through the pattern
cutthickness = 4;

// Number of rings near to the outside of the pattern
num_outer_rings = 3;
// Number of rings inside the pattern
num_inner_rings = 2;
// Number of cuts
num_cuts = 2; // [2,3,4,5,6]
// Angle of the initial cut
cut_angle = 45; // [0:180]
// how fine the rings should be (big numbers take longer to generate)
fn_in = 64; // [64, 128, 256, 512, 1024]

difference() {
	rings();
	cuts();
}

module rings() {
	// Major outer rings
	if( num_outer_rings > 0) {
		for(i=[0:num_outer_rings-1]) {
			ring(objDiam - (ringthickness*2+ringspacing)*i , ringthickness , height);
		}
	}

	// rings closer to the middle
	if( num_inner_rings > 0) {
		for(i=[0:num_inner_rings-1]) {
			ring(centerRingsDiam - (ringthickness*2+ringspacing)*i , ringthickness , height);
		}
	}
}

module cuts() {
	translate([0,0,height/2])
	for( rot=[0:num_cuts-1] ) {
		rotate([0,0,cut_angle+rot*(180/num_cuts)])

		cube([bignumber, cutthickness, bignumber*2], center=true);
	}
}

// a single ring
module ring( diam, thickness, height ) {
	difference() {
		cylinder(r=diam/2, h=height, $fn=fn_in);
		cylinder(r=diam/2 - thickness, h=bignumber, $fn=fn_in, center=true);
	}
}
```


[User]
Hey, I'm trying to design a customizable cupholder using OpenSCAD, and I'm having a lot of trouble getting the customizer to work correctly. I'd like something where I can control the overall size, the number of cups, whether or not there's a middle cup, the size of the drinks, the height of the cup holders, the minimum distance between cups and the edge, the cup wall thickness, and the thickness of the cup bottoms. It's supposed to be a half-spherical base with cylindrical cup holders around the perimeter and the option for one in the middle.

Here's what I'm envisioning:

*   **Overall Size:** I need a parameter to control the overall size of the base, let's call it `totalsize`. I want it to scale the whole thing, and it's measured in inches, but I also need to be able to scale it to other units using a `unit` variable.

*   **Number of Cups:**  The number of outer cups should be a parameter too, `cups`. It'll space them evenly around the perimeter of the base.

*   **Middle Cup:**  I need a boolean parameter, `middlecup`, to toggle a cup holder in the very center.

*   **Drink Width:**  The width of the drink that will fit in the cup, `drinkwidth`. This is important for setting the inner diameter of the cup holders.

*  **Cup Height:** How tall the cup holder will be, `drinkheight`.

*   **Minimum Distance:** `sidedist` will control how close the outer cups are to the edge of the base.

*   **Cup Thickness:** `cupthick` will set the thickness of the cup holder walls.

*   **Bottom Thickness:**  `botthick` is the thickness of the bottom of each cup holder. It's usually going to be double the cup thickness, at least.

*   **Sphere Detail:** I would also like to control how detailed the sphere is with an `sfn` parameter.

*  **Units:** The model is made in inches by default with the unit value being 25.4. I want to be able to change this using the `unit` variable.

I also need it to be able to connect to another half of the design, so I need joints, but I don't need to see them in the customizer. Here's the idea:

*  There should be a parameter called `joint_thickness` (which is not intended to be in the customizer), and it should define the thickness of the joints.
*   The joints should be sized using the `jointsize` variable, which is also not in the customizer.
*   The holes that the joints are placed in should be determined by a variable called `jointhole` (not in the customizer),
*   The spacing of the joint arms are controlled with `joint_spacing` (not in the customizer)
*   The number of joint arms is determined by `joint_arms` (not in the customizer), and the width of those arms by `jointarm_width` (not in the customizer).

The joint is going to be one part of the design, and another will be a ball (similar to a ball joint) that the joint connects to on the other half of the design.

The design will be split into two half-spheres. The top sphere will have the cup holders and a joint, while the bottom sphere will have a ball (which fits into the top sphere's joint).

I'd appreciate it if you could generate the OpenSCAD code for this. I believe it should be parametric but I haven't been able to get the customizer to preview correctly. This should also be in one file. I don't want to use any external libraries for this, so please don't use any like MCAD, BOSL, BOSL2, etc.

[Assistant]
CupholderV6.scad:
```
//CUSTOMIZER VARIABLES

//Size of the full piece
totalsize=12;	//	[6: small (6"), 12: medium, 16: large]

//How many cups do you want (doesn't include the middle cup)?
cups=4;		//		[1:8]

//Do you want a cup in the middle?
middlecup=1; 	//	[0: no, 1:yes]

//Width of your drink. For reference, Coca-Cola is 2.5 but about 2.75 with some wiggle room. Make sure that your cups do not run off the side of the piece.
drinkwidth=4;	//		[2:5]

//Height of the cup (should be a little more than half of your actual drink height)
drinkheight=4;// 	[1:5]

//Minimum distance of cups away from sides - if your cups run off the side, make this value higher.
sidedist=0.25;	//	[0.1:5]

//Thickness of the cup wall. This determines how how thick your cup is.
cupthick=0.125;	// [0.0625:0.5]

//Thickness of the bottom of cups (typical value is 2x the size of the cupthicknes)
botthick=0.25; // [0.03125:1]

//Detail of spheres - a value of approximately 50 is reccomened. Higher detail corresponds to longer rendering and slicing times.
sfn=50;	//	[30:200]

//Setting your unit. Model is designed for inches.
unit=25.4; // [1: mm, 10: cm, 25.4 : in (default)]

//This option will not appear
joint_thickness = 2;
//This option will not appear
jointsize=15;
//This option will not appear
jointhole = 1.75;
//This option will not appear
joint_spacing =0.5;
//This option will not appear
joint_arms = 5;
//This option will not appear
jointarm_width = 10;
//This option will not appear
sizeval=totalsize/2;
//This option will not appear
var=totalsize/cups-sidedist;

//----------------------------------------------Holes----------------------------------------------\\

module holesforcups(cups) {
	for(i=[0:cups]) {
		rotate([0,0,360/cups*i]) {
			translate([var*unit,var*unit,botthick*unit]) {
				cupholesize();
			}
		}
	}
}

module holesforjoints() {
	translate([(totalsize/5*unit),0,jointhole*unit]) {
			jointholesize();
	}
	translate([(totalsize/5*-1*unit),0,jointhole*unit]) {
			jointholesize();
	}
}

//-------------------------------------------Hole sizing-------------------------------------------\\

module cupholesize() {
	cylinder(r=(drinkwidth/2+botthick/2)*unit, h=(drinkheight+botthick)*unit, $fn=sfn);
}

module jointholesize() {
	rotate([90]) {
		cylinder(r=jointhole/2*unit, h=jointhole*unit, $fn=sfn);
	}
}

//-------------------------------------------Base shapes-------------------------------------------\\
module cup() {
	difference() {
		cylinder(r=(drinkwidth/2+botthick/2)*unit, h=(drinkheight+botthick)*unit+1, $fn=sfn);
		translate([0,0,botthick*unit+1]) {
			cylinder(r=drinkwidth/2*unit, h=drinkheight*unit, $fn=sfn);
		}
	}
}

module ball() {
rotate([-90,0,0]) {
	sphere(r=jointsize);
	translate([0,0,-jointsize]) cylinder(r1=8,r2=6,h=3);
	translate([0,0,-jointsize-3]) cylinder(r=8,h=3);
	}
}

module joint() {
rotate([90,0,0]) {
difference()
{
	sphere(r=jointsize+joint_spacing+joint_thickness);
	sphere(r=jointsize+joint_spacing);
	translate([0,0,-jointsize-3]) cube([jointsize+joint_spacing+joint_thickness+25,jointsize+joint_spacing+joint_thickness+25,18],center=true);
	for(i=[0:joint_arms])
	{
		rotate([0,0,360/joint_arms*i]) translate([-jointarm_width/2,0, -jointsize/2-4])
			cube([jointarm_width,jointsize+joint_spacing+joint_thickness+20,jointsize+6]);
	}
}
	translate([0,0,jointsize-2]) cylinder(r2=8,r1=8,h=5);

}
}

module halfsphere() {
	difference() {
		scale([1,1,0.5]) {
			sphere(r=sizeval*unit, $fn=sfn);
		}
		translate([-sizeval*unit,-sizeval*unit,-sizeval*unit]) {
			cube([totalsize*unit,totalsize*unit,sizeval*unit]);
		}
	}
}

//---------------------------------------------Plurals---------------------------------------------\\
module cups(cups) {
	for(i=[0:cups]) {
	rotate([0,0,360/cups*i]) {
		translate([var*unit,var*unit,botthick*unit]) {
			cup();
			}
		}
	}
holesforcups(cups);
}

module jointandball() {
	translate([(totalsize/5*unit),0,jointhole*unit]) {
			joint();
	}
	translate([(totalsize/5*-1*unit),0,jointhole*unit]) {
			ball();
	}
}

//---------------------------------------------Combos---------------------------------------------\\

module half() {
	difference() {
		fullnojointsmiddlecup(cups);
		translate([-totalsize*unit/2,0]) {
			cube([totalsize*unit,totalsize*unit,(cupthick+totalsize)*unit]);
		}
	}
}

module middlecup() {
cup();
}

module fullnojointsmiddlecup(cups) {
	difference() {
		halfsphere();
		holesforcups(cups);
		translate([0,0,botthick*unit]) {
			cupholesize();
		}
	}
translate([0,0,botthick*unit]) {
	cup();
cups(cups);
	}
}

module final(cups) {
	difference() {
		half(cups);
		holesforjoints();
	}
jointandball();
}

module export(cups) {
	final(cups);

	translate([0,50,0]) {
		rotate([0,0,180]) {
			final(cups);
		}
	}
}
//----------------------------------------Actual Code----------------------------------------\\

export(cups);
```


[User]
I need a replacement wheel for a closet slider. It's got a sort of cone shape to it, with a smaller diameter at the middle and then flaring out to a larger diameter at the top and bottom. I need a hole through the center for a bolt to go through.

Here's the specific dimensions I need, but I'd like them to be easily adjustable with parameters:

*   **Thickness:** The overall thickness of the wheel should be adjustable. Let's start at 8mm
*   **Large Diameter:** This is the diameter at the top and bottom of the cone, starting at 40mm
*   **Small Diameter:** This is the diameter at the middle, starting at 35mm
*   **Bolt Diameter:** This is the diameter of the hole through the center, starting at 8mm

Could you write an OpenSCAD file for this? I'm not very experienced with OpenSCAD, so please make sure it's well-commented. I'm not using any external libraries.

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

//Thickness of the roller
thickness = 8; //[1:100]

//Larger diameter of the wheel
large_dia=40;

//Smaller diameter of the wheel
small_dia=35;

//Mounting bolt diameter
bolt_size=8;

difference()
{
	union()
	{
		cylinder(h=thickness/2, r1=small_dia/2, r2=large_dia/2, center=false, $fn=60);
		translate([0,0,thickness/2]) cylinder(h=thickness/2, r1=large_dia/2, r2=small_dia/2, center=false, $fn=60);
	}
	union()
	{
		cylinder(h=thickness, r=bolt_size/2, $fn=20);
	}
}

```


[User]
Hi, I'm looking to create a customizable shredder blade for a project I'm working on. I've seen some designs online but I'd like to be able to control more of the parameters. Specifically, I need the following:

*   **Base Gear Diameter:** The diameter of the main gear body the teeth extend from.
*   **Tooth Height:** The perpendicular distance from the gear surface to the tip of the teeth.
*   **Bore Diameter:** The diameter of the central hole for mounting on an axle or nut.
*   **Gear Thickness:** The overall thickness of the gear/blade.  This should allow for a value of zero for creating 2D profiles for CNC.
*   **Tooth Width:** The angular width of each tooth, expressed as a fraction of a full circular pitch. So, something like 2.5 would mean that each tooth takes up the space of 1/2.5 of the 360 degrees available per tooth. I'm thinking this should be a parameter called `TeethPerN` - that is, the number of teeth that would fit into a full revolution using that width for one tooth.
*   **Tooth Pitch:** The angle of the tooth's leading edge relative to a radial line.
*   **Number of Teeth:** The total number of teeth on the blade.
*    **Bore Shape:** The shape of the central bore hole: 4 sides(square), 6 sides(hexagon) or 12 sides (dodecagon), should default to a dodecagon (12 sides).
*   **Circle Resolution:** This sets the `$fn` for the circle used as the base gear, so I can control how finely detailed it is.

Ideally, the generated design would handle both 2D (for CNC) and 3D (for printing). When the `thickness` is zero or close to it, it should output a 2D shape made of the circle and teeth only, without any extrusion. I'd also like the 3D design to have a little more meat behind the teeth, rather than just a simple triangle.

Could you generate the OpenSCAD code for this? I don't need any additional libraries to make this project work.

[Assistant]
shredder_gear_1.1.scad:
```
//Shredder Blade v1.1 (v1.0 had 69 downloads on Thingiverse)
//Ari M Diacou - July 2014
//Published at: http://www.thingiverse.com/thing:383635
//Shared under Creative Commons License: Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
//see http://creativecommons.org/licenses/by-sa/3.0/

///////////////////// Parameters ///////////////////////////////////
//Diameter of the gear that the tooth extends from
diameter=10;
//Perpendicular distance from the gear surface to the tooth tip
tooth_height=1.5;
//Measure corner to corner of your axel/nut
bore_diameter=2;
//Thickness of the gear. Set to 0 if you want to make a CNC drawing.
thickness=1;
//Sets the angular width of the tooth, A cicular saw blade would have N*TeethPerN teeth.
TeethPerN=2.5;
//The pitch of the teeth in degrees
pitch=10;
circle_resolution=100;
Number_of_teeth=3;
//The number of sides in the borehole
bore_shape=12;//[4,6,12]

                      /*[Hidden]*/
////////////////// Derived Constants ///////////////////////////
R=diameter/2;
$fs=0+0.01;
number_of_teeth=Number_of_teeth+0.001; //There was a bug for 3 and 5, which caused a "No top level geometry error" during F6, this is a catchall hack around it.
//////////////////////// MAIN() ////////////////////////////////
if(thickness<=$fs){
//Used if you want a drawing for CNC
	difference(){
		circle(r=diameter/2,$fn=100);
		bore(bore_shape);
		}
	teeth(number_of_teeth,TeethPerN);
	}

if(thickness>$fs){
//Used if you want an STL
	linear_extrude(thickness){
		difference(){
			circle(r=diameter/2,$fn=circle_resolution);
			bore(bore_shape);
			}
		teeth(number_of_teeth,TeethPerN);
		}
	}
/////////////////////// Functions ////////////////////////////
module bore(n=6){
	//creates a bore hole to attach the gear to, default is a hexagon
	if(n!=12)
		circle(r=bore_diameter/2,$fn=n);
	if(n==12)
		union(){
			circle(r=bore_diameter/2,$fn=6);
			rotate([0,0,360/12])
				circle(r=bore_diameter/2,$fn=6);
		}
	}

module tooth1(N){
	//A tooth without pitch, N is the number of teeth around the gear
	theta=360/N/TeethPerN;
	A=[0,R];
	B=[-R*sin(theta), R*cos(theta)];
	C=[0,R+tooth_height];
	polygon([A,B,C]);
	}

module teeth(N){
	for(i=[1:N]){
		rotate(i*360/N) tooth3(N,pitch);
		}
	}

module tooth2(N, pitch=10){
	//A tooth with settable pitch
	theta=360/N/TeethPerN;
	B=[-R*sin(theta), R*cos(theta)];
	C=[0,R+tooth_height];
	A=C-tooth_height*[sin(pitch),cos(pitch)];
	polygon([A,B,C]);
	}

module tooth3(N, pitch=10){
	//A 4-point tooth with settable pitch
	theta=360/N/TeethPerN;
	theta2=theta/3;
	B=[-R*sin(theta), R*cos(theta)];
	C=[0,R+tooth_height];
	A=C-tooth_height*[sin(pitch),cos(pitch)];
	D=(R+tooth_height)*[-sin(theta2), cos(theta2+pitch)];
	polygon([A,B,D,C]);
	}

```


[User]
Hey, I'm looking to generate a parametric rectangular hinged box, similar to the one described in the provided code. I need it to be customizable in terms of interior dimensions, wall thicknesses, and hinge properties. I'd also like some options for things like a lip around the top and bottom for easier opening, and a small tab for opening the lid.

Specifically, I'd like these parameters to be configurable:

*   **Interior Dimensions:**
    *   `interiorWidth`: The width of the box's interior space.
    *   `interiorLength`: The length of the box's interior space.
    *   `interiorHeight`: The height of the box's interior space.
    *   `interiorFillet`: A radius for filleting the interior corners of the box.
*   **Hinge:**
    *   `hingeWidth`: The width of the hinge along the side of the box.
    *   `hingeThickness`: The thickness of the hinge (keep it flexible).
    *  `hingeLengthScale`: A multiplier to scale the hinge length as a function of case height.
 * `hingeFillet`: A radius for filleting the hinge itself.
*   **Walls:**
    *   `coverThickness`: The thickness of the top and bottom walls.
    *   `sidewallWidth`: The thickness of the side walls.
    *   `lidInsetHeight`: The amount the lid fits inside the base of the box when closed.
*   **Details:**
    *   `rimInset`: The distance the top and bottom surfaces extend beyond the sides of the case.
    *   `tabSize`: The length of the opening tab on the lid (set to 0 to remove).
*   **Printer Tolerances:**
    *   `lidInsetOffset`: An adjustment value for the tightness of the lid when closed.

I'd like the hinge to be flexible, so maybe it can be made longer or thinner in the code for experimentation if needed. It would be great if the lid has a lip to assist with opening. If you can, include a small opening tab for added convenience. I'm mainly using this for 3D printing so some printer tolerance options would be helpful. Can you generate all the necessary OpenSCAD files for this, making sure it is fully parametric?

[Assistant]
rectangular_folding_case_v1-1.scad:
```

/*[Dimensions]*/

// Width of the case in mm (interior dimension)
interiorWidth = 24.5;

// Length of the case in mm (interior dimension)
interiorLength = 32.5;

// Height of the case in mm (interior dimension)
interiorHeight = 10;

// Case interior fillet radius
interiorFillet = 2.0;

// Width of the hinge in mm
hingeWidth = 12;

/*[Walls]*/

// Horizontal wall (top and bottom) thickness
coverThickness = 1.0;

// Vertical wall (side) thickness
sidewallWidth = 1.1;

// Amount the lid protrudes into the case (larger value allows the case to close more securely)
lidInsetHeight = 1.2;

// Thickness of the hinge (it should be no more than a few layers thick keep it flexible)
hingeThickness = 0.3;

// hinge length multiplier (as a function of case height - longer hinges may be needed for less flexible plastics)
hingeLengthScale = 1.1;

/*[Details]*/

// Distance the top and bottom surfaces extend beyond the sides of the case (makes the case easier to open)
rimInset = 0.6;

// Length of the opening tab on the lid of the case (optional - set to 0 to remove)
tabSize = 1;

// Fillet radius used for hinge and tab
hingeFillet = 3;

/*[Printer Tolerances]*/

// Adjust the tightness of the closed case (larger value makes the case looser, negative value makes it tighter - try adjusting in 0.1mm increments)
lidInsetOffset = 0.0;

/*[hidden]*/
eps = 0.1;
$fn = 120; // resolution

module case()
{
	// minimal error checking
	hingeWidth = min(hingeWidth, interiorWidth);
	hingeThickness = min(hingeThickness, coverThickness);
	lidInsetHeight = min(lidInsetHeight, interiorHeight);

	baseLength = interiorLength + sidewallWidth*2;
	baseWidth = interiorWidth + sidewallWidth*2;
	baseRadius = interiorFillet + sidewallWidth;

	caseLength = baseLength + rimInset*2;
	caseWidth = baseWidth + rimInset*2;
	caseRadius = baseRadius + rimInset;

	hingeLength = hingeLengthScale * interiorHeight + coverThickness*2;
	centerY = (caseLength + hingeLength)/2;

	filletXOffset = hingeWidth/2 + hingeFillet;
	filletYOffset = hingeLength/2 - hingeFillet;

	module rrect(h, w, l, r) {
		r = min(r, min(w/2, l/2));
		w = max(w, eps);
		l = max(l, eps);
		h = max(h, eps);
		if (r <= 0) {
			translate([-w/2, -l/2,0]) {
				cube([w,l,h]);
			}
		} else {
			hull() {
				for (y = [-l/2+r, l/2-r]) {
					for (x = [-w/2+r, w/2-r]) {
						translate([x,y,0]) {
							cylinder(h=h, r=r, center=false);
						}
					}
				}
			}
		}
	}

	module rrectTube(h, ow, ol, or, t) {
		difference() {
			rrect(h=h, w=ow, l=ol, r=or);
			translate([0,0,-eps]) {
				rrect(h=h+eps*2, w=ow-t*2, l=ol-t*2, r=or-t);
			}
		}
	}

	union() {
		// bottom surfaces
		for (i = [-centerY, centerY]) {
			translate([0,i,0]) {
				rrect(h=coverThickness, w=caseWidth, l=caseLength, r=caseRadius);
			}
		}

		translate([0,0,coverThickness-eps]) {

			// base
			translate([0,centerY,0]) {
				rrectTube(h=interiorHeight+eps, ow=baseWidth, ol=baseLength, or=baseRadius, t=sidewallWidth);
			}

			// lid
			translate([0,-centerY,0]) {
				rrectTube(h=lidInsetHeight+eps, ow=interiorWidth - lidInsetOffset, ol=interiorLength - lidInsetOffset, or=interiorFillet - lidInsetOffset/2, t=sidewallWidth);
			}
		}

		// hinge
		if (hingeWidth > caseWidth - caseRadius*2) {
			translate([-hingeWidth/2,-centerY,0]) {
				cube([hingeWidth, centerY*2, hingeThickness]);
			}
		} else {
			difference() {
				translate([-hingeWidth/2 - hingeFillet,-centerY,0]) {
					cube([hingeWidth + hingeFillet*2, centerY*2, hingeThickness]);
				}

				// fillet hinge
				for (x = [-filletXOffset, filletXOffset]) {
					hull() {
						for (y = [-filletYOffset, filletYOffset]) {
							translate([x,y,-eps]) {
								cylinder(h=hingeThickness + eps*2, r=hingeFillet, center=false);
							}
						}
					}
				}
			}
		}

		// tab
		if (tabSize > 0) {
			hull() {
				for (x = [hingeFillet - hingeWidth/2, hingeWidth/2 - hingeFillet]) {
					translate([x,-caseLength - hingeLength/2 - tabSize + hingeFillet,0]) {
						cylinder(h=coverThickness, r=hingeFillet, center=false);
					}
				}
				translate([-hingeWidth/2,-centerY,0]) {
					cube([hingeWidth, eps, coverThickness]);
				}
			}
		}
	}

}

case();

```


[User]
I'd like a customizable die, please. I'm envisioning a standard six-sided die, but with a few options for different styles.

Specifically, I want to be able to control the overall size of the die using a variable, let's call it `dice_size`. I also need to be able to control the size of the pips (the dots that indicate the number on each side) relative to the overall die size, maybe with a variable like `pip_size_factor`. This would allow me to make the pips bigger or smaller.

I want three different output options, selectable by a variable called `part`. If `part` is 1, I just get a solid die with the pips as indentations. If `part` is 2, it should be a hollow die where the pips are cut all the way through. And if `part` is 3, it should also be hollow, but with the cutouts having a bit of a "perimeter" - basically making the pip holes slightly smaller so they have a bit of a rim around each hole. I'd want a `pip_perimeter_width` variable to control the size of this rim in the `part=3` case.

I’d also like a `resolution` parameter that lets me adjust the mesh quality. High resolution at 0, then medium at 1, then low at 2, and ultra low at 3.

I think that's it. It seems like a pretty straightforward project. I'm not really sure how to do the intersection and difference operations in OpenSCAD, but I'm guessing you can handle it. I'm not using any libraries.

[Assistant]
dice.scad:
```
// DICE
// by peanut
// July 2014

// license:
// CC-BY-SA
// http://creativecommons.org/licenses/by-sa/4.0/

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

dice_size = 15;

part = 1;		//[1:solid, 2:hollow 1, 3:hollow 2]

//try values between 6 and 20
number_size_divider = 10.5;

//only needed by part = hollow 2
number_perimeter_width = 0.4;

//small dice needs higher resolution
resolution = 2;		//[0:high, 1:medium, 2:low, 3:ultra low]

$fs=0.18*(resolution + 1);
$fa=360/(130/(resolution + 1));

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

if (part == 1)
	dice(dice_size,dice_size/number_size_divider);

if (part ==2)
	intersection(){
		numbers(dice_size,dice_size/number_size_divider);
		cube(dice_size,center=true);
	}

if (part ==3)
	difference(){
		intersection(){
			numbers(dice_size,dice_size/number_size_divider);
			cube(dice_size,center=true);
		}
	numbers(dice_size,dice_size/number_size_divider-number_perimeter_width);
	}

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

module dice(size,number_hole_r){
	difference(){
	//base
		intersection(){
			cube(size,center=true);
			sphere(r = sqrt(pow(size/2,2)*2));
		}
	numbers(size=size,number_hole_r=number_hole_r);
	}
}

module numbers(size,number_hole_r){
hole_distance = size/4;
//one
	translate([0,0,-size/2])
		sphere(r=number_hole_r);
//two
	translate([size/2,hole_distance,-hole_distance])
		sphere(r=number_hole_r);
	translate([size/2,-hole_distance,hole_distance])
		sphere(r=number_hole_r);
//three
	translate([hole_distance,size/2,-hole_distance])
		sphere(r=number_hole_r);
	translate([0,size/2,0])
		sphere(r=number_hole_r);
	translate([-hole_distance,size/2,hole_distance])
		sphere(r=number_hole_r);
//four
	translate([hole_distance,-size/2,-hole_distance])
		sphere(r=number_hole_r);
	translate([hole_distance,-size/2,hole_distance])
		sphere(r=number_hole_r);
	translate([-hole_distance,-size/2,hole_distance])
		sphere(r=number_hole_r);
	translate([-hole_distance,-size/2,-hole_distance])
		sphere(r=number_hole_r);
//five
	translate([-size/2,0,0])
		sphere(r=number_hole_r);
	translate([-size/2,hole_distance,-hole_distance])
		sphere(r=number_hole_r);
	translate([-size/2,hole_distance,hole_distance])
		sphere(r=number_hole_r);
	translate([-size/2,-hole_distance,hole_distance])
		sphere(r=number_hole_r);
	translate([-size/2,-hole_distance,-hole_distance])
		sphere(r=number_hole_r);
//six
	translate([hole_distance,-hole_distance,size/2])
		sphere(r=number_hole_r);
	translate([hole_distance,hole_distance,size/2])
		sphere(r=number_hole_r);
	translate([0,hole_distance,size/2])
		sphere(r=number_hole_r);
	translate([-hole_distance,hole_distance,size/2])
		sphere(r=number_hole_r);
	translate([-hole_distance,-hole_distance,size/2])
		sphere(r=number_hole_r);
	translate([0,-hole_distance,size/2])
		sphere(r=number_hole_r);
}
```