[User]
I'd like to create a customizable coin trap in OpenSCAD. I'm thinking of a design similar to the one described on MakerHome, where it's basically a rounded cube with holes that prevent a coin from being removed once inserted.

The design should be parametric, allowing me to specify the coin diameter. Ideally, I'd like to be able to select from a list of common coin types (US Penny, US Nickel, US Dime, US Quarter, US Half Dollar, US Presidential Dollar, Euro, Japanese Yen, Chinese Yuan, Indian Rupee, Russian Ruble, British Pound, Canadian Dollar, Swiss Franc, Polish Zloty, Brazillian Real, Mexican Peso, and Australian Dollar) or manually enter a diameter in millimeters.

The trap should have a rounded cube shape achieved with a hull operation, with cylindrical holes on each face, beveled by sphere subtractions, and a center spherical subtraction to guarantee coin clearance. I don't need the full set of US coin traps, just a single design for the selected coin.

Can you generate the OpenSCAD code for this? I don't need any libraries; everything should be written from scratch.

[Assistant]
mathgrrl_cointraps.scad:
```
// mathgrrl customizable coin traps

//////////////////////////////////////////////////////////////////////////
// PARAMETERS ////////////////////////////////////////////////////////////

// ignore this variable
$fn = 24*1;

// Choose the type of coin you want and leave the size below as 0. They'll all look basically the same in the output window but they are different sizes.
coin_type = 0; // [0:Enter Manually,19.05:US Penny,21.21:US Nickel,17.91:US Dime,24.26:US Quarter,30.61:US Half Dollar,26.49:US Presidential Dollar,23.25:Euro,20:Japanese Yen,40:Chinese Yuan,25:Indian Rupee,20.5:Russion Ruble,22.5:British Pound,26.5:Canadian Dollar,23.2:Swiss Franc,23:Polish Zloty,27:Brazillian Real,21:Mexican Peso,25:Australian Dollar]

// *OR* choose "Enter Manually" above and then type in any diameter you like, in millimeters. Values between 15 and 35 mm work the best.
coin_size = 0;

// this chooses one of the above for the diameter
coin_diameter = max(coin_type,coin_size);

// other parameters based on the coin diameter
coin_radius = coin_diameter/2;
corner_radius = coin_diameter/10;
corner_distance=coin_radius-corner_radius+1;
cylinder_radius=coin_radius-1.5*corner_radius;
cylinder_bevel_distance=corner_distance+2*corner_radius;
cylinder_bevel_radius=cylinder_radius+corner_radius/2;
sphere_radius=coin_radius+1;

//////////////////////////////////////////////////////////////////////////
// RENDERS ///////////////////////////////////////////////////////////////

// build the trap
difference(){
	box_hull();			// enclosing box area with rounded edges5
	cylinder_holes();	// three cylindrical holes
	cylinder_bevels(); 	// six spherical holes to bevel the holes
	sphere_hole();		// one spherical hole for coin clearance
}

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

// overall rounded cube shape
module box_hull(){
	hull(){
		translate([corner_distance,corner_distance,corner_distance])
			sphere(corner_radius);
		translate([-corner_distance,corner_distance,corner_distance])
			sphere(corner_radius);
		translate([corner_distance,-corner_distance,corner_distance])
			sphere(corner_radius);
		translate([corner_distance,corner_distance,-corner_distance])
			sphere(corner_radius);
		translate([-corner_distance,-corner_distance,corner_distance])
			sphere(corner_radius);
		translate([-corner_distance,corner_distance,-corner_distance])
			sphere(corner_radius);
		translate([corner_distance,-corner_distance,-corner_distance])
			sphere(corner_radius);
		translate([-corner_distance,-corner_distance,-corner_distance])
			sphere(corner_radius);
	}
}

// holes for the sides
module cylinder_holes(){
	rotate([0,0,0])
		translate([0,0,-(coin_radius+5)])
			cylinder(coin_diameter+10,cylinder_radius,cylinder_radius);
	rotate([90,0,0])
		translate([0,0,-(coin_radius+5)])
			cylinder(coin_diameter+10,cylinder_radius,cylinder_radius);
	rotate([0,90,0])
		translate([0,0,-(coin_radius+5)])
			cylinder(coin_diameter+10,cylinder_radius,cylinder_radius);
}

// beveling for the side holes
module cylinder_bevels(){
	translate([cylinder_bevel_distance,0,0])
		sphere(cylinder_bevel_radius);
	translate([0,cylinder_bevel_distance,0])
		sphere(cylinder_bevel_radius);
	translate([0,0,cylinder_bevel_distance])
		sphere(cylinder_bevel_radius);
	translate([-cylinder_bevel_distance,0,0])
		sphere(cylinder_bevel_radius);
	translate([0,-cylinder_bevel_distance,0])
		sphere(cylinder_bevel_radius);
	translate([0,0,-cylinder_bevel_distance])
		sphere(cylinder_bevel_radius);
}

// center hole to guarantee coin clearance
module sphere_hole(){
	sphere(sphere_radius);
}

```


[User]
I'm looking to create a parametric design for a sliding lid box with rounded corners. I've seen a couple of variations but I need a flexible design that lets me control all the key aspects.

Here's what I'm envisioning. The box should consist of two parts: a main box body and a sliding lid.

**Key parameters:**

*   **`width`**: The width of the box.
*   **`len`**: The length of the box.
*   **`height`**: The overall height of the box.
*   **`thickness`**: The thickness of the material used for the box walls and lid.
*   **`min_wall`**: The minimum remaining wall thickness *inside* the lid groove (where the lid slides in). This will control the fit of the lid.
*   **`radius`**: The radius of the rounded corners of the box and lid.

**Design details:**

*   The box should have a rectangular base with rounded corners.
*   The lid should slide into a groove around the top edge of the box.
*   The lid should also have rounded corners and fit snugly into the groove on the box. The `min_wall` parameter should control the clearance.
*   The design should be fully parametric, allowing me to easily change any of the input variables and see the updated model.
* The lid should be slightly undersized to allow smooth sliding.

I'd like the design to use cylinders for creating the rounded corners, similar to what I've seen in the version 1.1 of the sliding_lid_box_round.scad that I've come across - this allows better control over smoothness. I don't want to use the first version with the `hull()` and four circles in each corner because that doesn't always produce the nicest rounding.

Could you generate the necessary OpenSCAD code, preferably in one or more .scad files, to accomplish this? I don't need any libraries for this design. Thanks!

[Assistant]
sliding_lid_box_round.scad:
```
//parametic rounded sliding lid & box
//john finch 12-1-13

//User Inputs
width = 30;
len = 76;
height =22;
thickness = 2;
min_wall = 0.7; //remaining wall thickness inside lid groove
radius = 4; // .1 to say 10
//End of user inputs

x1 = len/2;
y1 = width/2;
z1 = 0;

x2 = x1 - thickness;
y2 = y1 - thickness;
z2 = z1 + thickness;

echo (x1,x2,y1,y2);

module roundedRect(size, radius)  //modified William A Adams roundedrect.scad
{
x = size[0];
y = size[1];
z = size[2];

echo (x, y, z, radius);

linear_extrude(height=z)
hull()
{
// place 4 circles in the corners, with the given radius
translate([(-x/2)+(radius), (-y/2)+(radius), 0])
circle(r=radius);

translate([(x/2)-(radius), (-y/2)+(radius), 0])
circle(r=radius);

translate([(-x/2)+(radius), (y/2)-(radius), 0])
circle(r=radius);

translate([(x/2)-(radius), (y/2)-(radius), 0])
circle(r=radius);
}
}
module lid_trimmer(){
difference(){
	translate([-(len+5)/2,-(width+5)/2,0])
	cube([len+5,width+5,thickness+5]);
	roundedRect([len-2*min_wall,width-2*min_wall,thickness+5],radius);
	}

}

module lid(adjust){

difference(){
	polyhedron (
				points = [	[-x1,-y2+min_wall+adjust,0],
							[x2-min_wall-adjust,-y2+min_wall+adjust,0],
							[x2-min_wall-adjust,y2-min_wall-adjust,0],
							[-x1,y2-min_wall-adjust,0],
							[-x1,-y1+min_wall+adjust,z2],
							[x1-min_wall-adjust,-y1+min_wall+adjust,z2],
							[x1-min_wall-adjust,y1-min_wall-adjust,z2],
							[-x1,y1-min_wall-adjust,z2]],

			triangles = [	[0,5,1],
							[5,0,4],
							[1,6,2],
							[1,5,6],
							[6,3,2],
							[6,7,3],
							[7,0	,3],
							[4,0,7],
							[4,6,5],
							[6,4,7],
							[0,1,2],
							[0,2,3]]);
	lid_trimmer();
	}
}

module box() {
difference(){

	translate([0,5+width,0])
	roundedRect([len,width,height],radius);

	translate([0,5+width,thickness])
	roundedRect([len-2*thickness,width-2*thickness,height],radius-thickness);

	translate([0,5+width,height+.1])
	rotate([180,0,0])
	lid(0);
	//cut slot end open
	translate([-thickness,5+width,height+.1])
	rotate([180,0,0])
	lid(0);

	}
	/*
	translate([0,5+width,height+.1])
	rotate([180,0,0])
	lid(.5);
	*/

}

//print lid undersized in length by .5mm and width by 1.0 mm

lid(.5);

//lid_trimmer();
box();

```
sliding_lid_box_round_v1.1.scad:
```
//parametic rounded sliding lid & box
//john finch 12-1-13

//Version 1.1 12-2-13
//Fixed problem of boxes being slightly under dimensioned due to too few
//facets in the rounded corners.  Reworked the roundedRect module to use
//cylinders with facet count control.  This took the steps out of the rounded
//corners and brought the outside dimensions closer to specified. Compile time
//is increased.

//User Inputs
width = 47;
len = 66;
height =25;
thickness = 2;
min_wall = 0.7; //remaining wall thickness inside lid groove
radius = 4; // .1 to say 10
//End of user inputs

x1 = len/2;
y1 = width/2;
z1 = 0;

x2 = x1 - thickness;
y2 = y1 - thickness;
z2 = z1 + thickness;

echo (x1,x2,y1,y2);

module roundedRect(size, radius)  //modified William A Adams roundedrect.scad
{
x = size[0];
y = size[1];
z = size[2];
fa=0.01;
fs=0.5;
radius=max(0.1,radius);
radius=min(radius,10);
//echo ("Radius= ",radius);

//echo (x, y, z, radius);

hull()
	{
	translate([-x/2+radius,-y/2+radius,0])
	cylinder(h=z,r1=radius,r2=radius,$fa=1,$fs=fs);

	translate([x/2-radius,-y/2+radius,0])
	cylinder(h=z,r1=radius,r2=radius,$fa=1,$fs=fs);

	translate([-x/2+radius,y/2-radius,0])
	cylinder(h=z,r1=radius,r2=radius,$fa=1,$fs=fs);

	translate([x/2-radius,y/2-radius,0])
	cylinder(h=z,r1=radius,r2=radius,$fa=1,$fs=fs);

	}
}
module lid_trimmer(){
difference(){
	translate([-(len+5)/2,-(width+5)/2,0])
	cube([len+5,width+5,thickness+5]);
	roundedRect([len-2*min_wall,width-2*min_wall,thickness+5],radius);
	}

}

module lid(adjust){

difference(){
	polyhedron (
				points = [	[-x1,-y2+min_wall+adjust,0],
							[x2-min_wall-adjust,-y2+min_wall+adjust,0],
							[x2-min_wall-adjust,y2-min_wall-adjust,0],
							[-x1,y2-min_wall-adjust,0],
							[-x1,-y1+min_wall+adjust,z2],
							[x1-min_wall-adjust,-y1+min_wall+adjust,z2],
							[x1-min_wall-adjust,y1-min_wall-adjust,z2],
							[-x1,y1-min_wall-adjust,z2]],

			triangles = [	[0,5,1],
							[5,0,4],
							[1,6,2],
							[1,5,6],
							[6,3,2],
							[6,7,3],
							[7,0	,3],
							[4,0,7],
							[4,6,5],
							[6,4,7],
							[0,1,2],
							[0,2,3]]);
	lid_trimmer();
	}
}

module box() {
difference(){

	translate([0,5+width,0])
	roundedRect([len,width,height],radius);

	translate([0,5+width,thickness])
	roundedRect([len-2*thickness,width-2*thickness,height],radius-thickness);

	translate([0,5+width,height+.1])
	rotate([180,0,0])
	lid(0);
	//cut slot end open
	translate([-thickness,5+width,height+.1])
	rotate([180,0,0])
	lid(0);

	}
	/*
	translate([0,5+width,height+.1])
	rotate([180,0,0])
	lid(.5);
	*/

}

//print lid undersized in length by .5mm and width by 1.0 mm

lid(.5);

//lid_trimmer();
box();

```


[User]
Hey, I'm looking to create a customizable Christmas tree using OpenSCAD, and I have some specific features in mind. I'd like it to be parametric, so I can easily adjust its shape and size.

Here's what I'm thinking:

*   **Basic Structure:** The tree should have a central core with a number of radial "twigs" or fins, kinda like a stylized, minimalist Christmas tree. I need to be able to control how many of these twigs there are, let's say between 2 and 20.
*   **Size:** I need to be able to set the tree's diameter at the base, from 25mm to 200mm, and also the overall height, ranging from 10mm to 200mm.
*   **Wall Thickness:** The wall thickness of the tree should be adjustable so I can get it as thin as 0.25mm or as thick as 1mm.
*   **Twist:** It would be cool if the tree could have a twist to it, so the fins spiral up. I'd like to control the twist angle, from 0 to 360 degrees, and the direction too, clockwise or counter-clockwise.
*   **Hanger:**  I want to be able to add a way to hang the tree. I'd like options for no hanger, a small hole at the top, or a ring attached to the top.
*   **Baseplate:**  I'd like a baseplate to help the tree stand up. Options should be a small baseplate and a full circle at the base.

Now, for the cooler, more custom stuff:
*   **Branches:**  I'd like the tree to have branch-like structures. These should not be separate pieces of the tree but actually be an integrated part. I'd like to control the number of "branches" that help form the curve, maybe between 1 and 12. More branches will mean more of a curve in the side of the tree.
*   **Overhang:** I also need control over how far these "branches" extend out from the main core, or overhang. I guess a range from 0mm to 10mm should be good. Too much might cause print issues, but a small overhang can look good.
*   **Curve:** The curve should be a cubic curve. If branches are set to 1 there is no curve, more than 4 branches gives a nice curve.

I think that covers it. Can you generate an OpenSCAD file or set of files for this? Thanks!

[Assistant]
Mark_Christmas+tree_customizer4_2013-12-1.scad:
```
//Christmas tree - Customizer version
//by kowomike, published Nov 18, 2013
//original OpenSCAD file http://www.thingiverse.com/thing:186164
//
//added branch segments and curve to customize tree
//mark peeters Nov 29, 2013
//http://www.thingiverse.com/thing:194112

/* [basic parameters] */
//Number of "twigs", or radial fins
number=7; //[2:20]

//Tree diameter at base [mm]
base_diameter=80; //[25:200]

//Tree height [mm]
height=100;	//[10:200]

//Wall thickness
wall=.5; //[0.25:thin (0.25 mm),0.5:standard (0.5 mm),1:thick (1 mm)]

//Twist angle [°] (>180 will be hard to print)
twist=0; //[0:360]

//Turning direction
direction=-1; //[-1:counterclockwise,1:clockwise]

//Add hanger
hanger=2; //[0:none,1:make hole in top,2:add ring on top]

baseplate=1; //[1:small,2:full circle]

/* [branches and curve] */
//Number of branches, also effects curve. (make 1 for no curve, make higher that 4 to see a nice cubic curve)
branches=7;	//[1:12]

//Tree branch over hang (how for back to notch branches) Large overhand will make blobs - but that is not always bad) [mm]
overhang=5;	//[0:10]

/* [Hidden] */
radius=(base_diameter/2);
branchrad=(base_diameter/2)-overhang-2;

// hanger section
difference () {
	tree(number=number,radius=radius,height=height,wall=wall,twist=twist,dir=direction);

	if (hanger==1) {
		for (i=[0,90]) {
			translate ([0,0,height*0.94])
			rotate ([90,0,i])
			scale ([1,2,1])
			cylinder (r=radius*0.025,h=10,$fn=25,center=true);
		}
	}
}

if (hanger==2) {
	translate([0,0,height+2])
	rotate([90,0,0])
	scale([1,1,1])
	rotate_extrude(convexity = 10, $fn = 100)
	translate([3, 0, 0])
	circle(r = 1, $fn = 100);
}
//end hanger

//start module tree
module tree (number=6,radius=30,height=100,wall=0.5,twist=-90,direction=direction) {

points=[[wall*0.5,0],[wall*0.5,radius-1],[wall*0.4,radius-0.6],[wall*0.2,radius],[0,radius],[wall*-0.2,radius],[wall*-0.4,radius-0.6],[wall*-0.5,radius-1],[wall*-0.5,0]];

intersection () {
//tree fins, 1st part for intersection
for (i=[1:number]) {
	rotate ([0,0,i*360/number])
	linear_extrude($fn=100,height = height,  convexity = 10, twist = twist*direction)
	polygon( points);
                    }
//end tree fins
//tree branches & curve, 2nd part for intersection
  union() {
      for (i=[1:(branches)]) {
        translate([0,0,height-i*(height/branches)])
        cylinder (r1=2+(overhang*(i/branches))+(branchrad*((i*i)/(branches*branches))),r2=2+(branchrad*(((i-1)*(i-1))/(branches*branches))),h=height/branches);
                        }
//end tree branches & curve
              }
//end intersection
         }
//end module tree

//start Baseplate
	if (baseplate==1) {
		for (i=[1:number]) {
			rotate ([0,0,i*360/number])
			linear_extrude($fn=100,height = 0.5,  convexity = 10)
			scale ([5,1,1])
			polygon(points);
		}
	}

	if (baseplate==2) {
		cylinder (r=radius,height=0.5,$fn=100);
	}
//end base plate
}
//end

```


[User]
Hey, I'd like to design a parametric Christmas tree in OpenSCAD. I've got some basic ideas, and I need your help to get it all put together.

Here's what I'm thinking:

**General Structure:**

*   The tree will be built in levels or "etages." I want to control how many levels there are.
*   Each level should have a set of "branches" coming off of it, forming a sort of star shape.
*   The branches should twist as they go up the tree, giving it that characteristic spiral effect. I need to be able to control the amount of twist.
*   The tree should be hollow (mostly), made of a series of cones stacked on top of each other.

**Parameters I Want to Control:**

*   `rad`: This will control the overall size of the tree, a radius, I think.
*   `etage`: The number of levels/tiers in the tree.
*   `branche`: The number of branches per level.
*   `torsion`: The twist amount, zero being no twist.
*   `base`: An integer that controls the base options, see below.

**Base Options:**

*   `base = 1`: The tree should have a simple stand or "foot" so it can sit on a surface. This stand should be made of two perpendicular flat supports at the base of the tree.
*   `base = 2`: There should be a small hole drilled through the top so I could hang it.
*   `base = 3`: Both of the above; a stand AND a hole for hanging.
*   `base = 4`: No base at all, just the tree itself.

**Specific Design Elements:**

*   The "branches" at each level should be cut out from a circle. There should be something like a nut or gear shape at each level where the branches are cut out.
*  The base for `base = 1` should be sized automatically based on the overall size of the tree (`rad`).

I'd like the final output to be a single SCAD file, or maybe a couple, that I can tweak easily.

Let me know if you have questions, I'm excited to see what you come up with!

[Assistant]
sapin_de_noel.scad:
```
//origin size [mm]
rad=80; // [20:200]
//number of level
etage=6; // [1:20]
//number of branch
branche=9; // [3:16]
//twist (0 not twisted)
torsion=2; // [0:6]
//how to hang your tree
base=3; //[1:use a wooden foot,2:hole on the top,3:both,4:none]

module etoile(type = 1, r1 = rad/4, r2 = rad/2, n = branche, h = 10*etage, t =5)
{
	linear_extrude(height = h, twist = 360*t/n, convexity = t)
	difference() {
		circle(r2);
		for (i = [0:n-1]) {
				if (type == 1) rotate(i*360/n) polygon([
						[ 2*r2, 0 ],
						[ r2, 0 ],
						[ r1*cos(180/n), r1*sin(180/n) ],
						[ r2*cos(360/n), r2*sin(360/n) ],
						[ 2*r2*cos(360/n), 2*r2*sin(360/n) ],
				]);
				if (type == 2) rotate(i*360/n) polygon([
						[ 2*r2, 0 ],
						[ r2, 0 ],
						[ r1*cos(90/n), r1*sin(90/n) ],
						[ r1*cos(180/n), r1*sin(180/n) ],
						[ r2*cos(270/n), r2*sin(270/n) ],
						[ 2*r2*cos(270/n), 2*r2*sin(270/n) ],
				]);
		}
	}
}

module nut(type = 2, r1 = 16, r2 = 21, r3 = 30, s = 6, n = 7, h = 100/5, t = 8/5)
{
        difference() {
                cylinder($fn = s, r = r3, h = h);
                translate([ 0, 0, -h/2 ]) etoile(type, r1, r2, n, h*2, t*2);
        }
}

module arbre (i, rad)
{
if (i>=2)
{
translate ([0,0,10*(i-1)]) cylinder (r1=0, r2=rad*(1/(i+1)), h=(10+etage)/3);
}
translate ([0,0,10*(i-1)+((10+etage)/3)]) cylinder (r1=rad*(1/(i+1)), r2=0, h=10+etage);
}
{
translate ([0,0,-10*etage/2])
difference ()
{
for (i=[1:etage])
{
difference ()
{
arbre (i,rad);
translate ([0,0,10*(i-1)-1]) nut(type = 1, r1 = rad*(1/(i+1))/2, r2 = rad*(1/(i+1)), s=7, r3=2*rad*(1/(i+1)), n = branche, h = 11+etage, t=torsion);
}

}
//how to hang your tree
//change base variable [1:use a wooden foot,2:hole on the top,3:both,4:none]
if (base==1 || base==3)
{
if (rad > 90)
{
    cube(size = [5,30,30], center = true);
		cube(size = [30,5,20], center = true);
} else {
    cube(size = [5,rad/3,30], center = true);
		cube(size = [rad/3,5,20], center = true);
}
}
if (base==2 || base==3)
{
translate ([0,0,11*etage]) rotate ([0,90,0]) cylinder (r=1, h=rad, center=true);
}
}
}
```


[User]
Hey, I'm trying to design a parametric soda bottle opener in OpenSCAD, and I need some help. I've seen some designs online, but I'd like something customizable.

Basically, it should be a cylindrical gripper that fits over a standard soda bottle cap. The key part is that it needs angled spines on the inside that will grip the cap. The more you turn, the tighter it should grip.

Here's what I'm thinking, in terms of parameters:

*   **`cap_dia`**: Diameter of the bottle cap.
*   **`cap_height`**: Height of the bottle cap.
*   **`interference`**: This should be a small fraction that controls how much the spines protrude into the cap diameter.
*   **`outer_dia`**: The overall outer diameter of the opener.
*   **`inner_dia`**:  This will be calculated based on `cap_dia` and `interference`.
*   **`wall_thickness`**:  The thickness of the cylindrical wall.
*   **`spine_angle`**:  The angle of the spines relative to the cylinder's radial direction.
*   **`spine_thickness`**:  The thickness of each spine.
*   **`num_spines`**:  The number of spines around the inside of the cylinder.
*   **`spine_length`**:  This can be calculated based on the `outer_dia`, `wall_thickness`, `inner_dia`, and `spine_angle`.

The design should have these components:

1.  A main cylinder with `outer_dia` and a height of at least `cap_height` that forms the body.
2.  An inner cylinder, subtracted from the main cylinder, with a diameter to match the space between the cap and the spines, that also has a height of at least `cap_height`.
3.  The angled spines, that are created by making a cut that is at an angle off of the inner cylinder. The cut should be deep enough to reach the inner diameter of the wall. There should be `num_spines` of these cuts, evenly spaced around the circumference.
4.  A chamfer at the top of the cylinder, to make it a little more comfortable to grip.
5.  A small base to make the part easier to grip.

Could you generate the OpenSCAD code for this? I don't need any external libraries for this design, I don't think.

[Assistant]
bottle_opener.scad:
```
//parametric soda bottle opener
//John Finch 12/3/13
//Added chamfer to top of cap 12/3/13

cap_dia = 30.5;
cap_height = 15;
interference = .01;  //fraction the spine protruding into cap diameter

outer_dia = 45;
inner_dia = cap_dia * (1-interference);
wall_thickness = 2;
spine_angle = 15;
spine_thickness = 1;
num_spines = 36;

spine_length = (outer_dia/2-wall_thickness-inner_dia/2)/cos(spine_angle);

fa=0.01;
fs=0.5;

module spine(){
//echo(outer_dia/2-wall_thickness-spine_length);
//echo(-spine_thickness/2);
difference(){
	translate ([outer_dia/2-wall_thickness-spine_length*cos(spine_angle),-spine_thickness/2-spine_length*sin(spine_angle),0])
	rotate([0,0,spine_angle])
	cube([spine_length+.5,spine_thickness,cap_height]);

	translate([outer_dia/2-wall_thickness-spine_length,spine_length/2,0])
	rotate([90,0,0])
	cylinder(h=spine_length,r1=spine_length, r2=spine_length,$fn=3);
}
}

translate([0,0,2])
difference(){
	cylinder(h = cap_height, r1 = outer_dia/2, r2 = outer_dia/2, $fn=12);
	cylinder(h = cap_height, r1 = outer_dia/2-wall_thickness, r2 = outer_dia/2-wall_thickness, $fa=fa, $fs=fs);

	}
rot_angle = 360/num_spines;
translate([0,0,2])
for ( i = [ 1 : num_spines ] )
	{
	rotate([0,0,i*rot_angle])
	spine();
	}

translate([0,0,0])
cylinder(h = 2, r1 = outer_dia/2-2, r2 = outer_dia/2, $fn=12);

//spine();

```


[User]
Hey, I'm looking to create a parametric firefighter wedge, similar to the one I saw on Thingiverse (thing:43931), but with more customization options for the text label. I'd like to be able to choose from a variety of fonts and also control the text's position and size. I'll need a version that's completely parametric, though, so I can change all the dimensions, hole size, and of course the label.

Specifically, here's what I'm envisioning:

*   **Overall Shape:** A wedge shape, with a long dimension (L), a short dimension (W), and a thickness (HW). The wedge angle should be automatically calculated based on L and W.
*   **Text Label:**
    *   I need to be able to specify the text itself.  Let's keep it simple with a limit of about 4 characters or so.
    *   I need to select from a list of included fonts. I'm not sure how many are reasonable but let's include at least "Letters", "orbitron", "BlackRose", "knewave", and "braille" (all the fonts that seem to be in `write/` in the example).
    *   I need control over the text's height, thickness, spacing, and rotation.
    *   The text should be on both sides of the wedge, at a consistent position.
*   **Lanyard Hole:**  There should be an optional hole for a lanyard that I can turn on or off and control the radius of.
*   **Parametric Design:** I need to be able to control all of the above with parameters.

I think the `write` module that was in the original example uses .dxf files, so I guess you'd need something like that included in a folder called "write/".  I'd also like the code to be fairly well-commented so I can understand what's going on if I need to modify it later. I think that's everything! Let me know if I've missed anything.

[Assistant]
Customizer_FF_Wedge_thing_with_more_Fonts.scad:
```
//Parametric Firefighter Wedge By schlem
//
//"We use wedges like these to block open doors like a doorstop or at the hinge. Two wedges can be pushed together inside the frame of a sprinkler head to shut off the (copious) flow of water... Print it in a bright color so that you don't lose it on the fireground."
//
//After http://www.thingiverse.com/thing:43931 by schlem
//
//User defined parameters for text, and lanyard hole
// size and font customization pending

// First Things **************************

//$fs=1;
//$fa=3;

	use <write/Write.scad>
// use <Write.scad>  // my config

// Parameters ****************************

// Long dimension of wedge
L=102*1;

// Short dimension of wedge
W=30*1;

// Thickness of wedge
HW=15*1;

// Label on wedge, limited to 5 characters
// +++++++++++++++++++++++++++++++++++++++
//on wedge (3, max. 4 characters)
text="123";
font = "write/Letters.dxf"; // ["write/Letters.dxf":Letters,"write/orbitron.dxf":orbitron,"write/BlackRose.dxf":BlackRose,"write/knewave.dxf":knewave,"write/braille.dxf":braille]
label=str(text);
// +++++++++++++++++++++++++++++++++++++++

// Radius; 0 = no hole
hole=3;

//	Angle of wedge
theta=atan(W/L);

//default font settings
	center=0*1;
	h = W*.5;			 //mm letter height
	t = 2*1; 			//mm letter thickness
	space =0.9*1; 			//extra space between characters in (character widths)
	rotate=0*1;			// text rotation (clockwise)
// (designed to work with Black Rose

// Top Level code ****************************

difference(){
	wedge(L,W,HW);
	translate([((10+len(label))*L/12)-(len(label)*8),W/8,t*.9])rotate([0,180,0])write(label,t=t,h=h,font=font,space=space,rotate=rotate,center=center);
	translate([10*L/12-(len(label)*8),W/8,(HW-t*.9)])write(label,t=t,h=h,font=font,space=space,rotate=rotate,center=center);
}

//
//echo (L/2);
//echo (L/2/len(label));
//

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

module wedge(L=150, W=40, HW=15){

	hypotenoos=sqrt(pow(L,2)+pow(W,2));
	difference(){
		render(convexity=10)cube([L,W,HW]); //cube dimensioned to LxWxHW
		rotate(theta, 0,0,0)translate([0,0,-1])cube([hypotenoos,W,HW*1.1]); //subtract along hypoteneuse
		rotate(theta/2, 0,0,0)translate([0,0,1])cube([L/6,W/4,HW*2,],center=true);
		translate([L,W,1])rotate(-45)cube([L/6,W/5,HW*2,], center=true);
  		translate([L,0,1])rotate(45)cube([L/6,W/5,HW*2,], center=true);
		perforate();
//-theta/2
	}
}

module perforate(radius=hole){

	translate([(0.9*L),(0.45*W),-.5])cylinder(h = HW*1.1, r=hole);
}

```


[User]
Okay, I need to design a parametric belt holder for a Graber i3 3D printer. I've got some old designs as a reference, but they need a complete re-do. The holder needs to work for both the X and Y axes, and needs to be parametric so I can adjust it for different belt types. I'd like to use the following belt types and parameters:

*   **T2.5:**  `belt_tooth_distance = 2.5`, `belt_tooth_ratio = 0.8`
*   **T5:** `belt_tooth_distance = 5`, `belt_tooth_ratio = 1.05`
*   **HTD3:** `belt_tooth_distance = 3`, `belt_tooth_ratio = 1.05`
*   **MXL:** `belt_tooth_distance = 2.032`, `belt_tooth_ratio = 0.94`
*   **GT2:** `belt_tooth_distance = 2`, `belt_tooth_ratio = 0.8`

The design should include these key features:

*   **Belt Clamping:**  The belt should be secured using the belt teeth. The design should have two sections - one to run the belt through, and one to clamp the belt teeth down against.
*   **Rounded Rectangular Body:**  The main body should have rounded corners. I'd like to use the `roundedRect` module from Thingiverse user "nophead" (thing:9347) if that's possible, or something functionally similar if not. (I don't want to rely on copy-pasting the code directly.)
*   **Mounting Hole:** It needs a through-hole for a mounting screw, and a nut-shaped pocket on the opposite side so that it can be secured by a screw and nut. I'd like the option to rotate this nut pocket, since there might be different clearance considerations depending on the design of the printer frame.
*   **Tensioning Option:** I'd like the option to make a "tensiometer" version of the part by making the mounting hole an elongated slot, rather than a simple circle.
*   **Support structure:** I'd like to have support options for the mounting nuts, I'll want this to be configurable.
*   **X & Y variations:** The X axis version should have an extra length, for mounting.

I am not interested in including any other openscad libraries, other than the one I've already mentioned for the rounded corners.

Here are the basic dimensions to start with - these should be parameters as well:

*   `length = 17`
*   `width = 10`
*   `thickness = 21`
*   `extra = 0.2` (for tolerances)
*   `belt_width = 6`
*   `belt_thickness = 1.2` (excluding teeth)
*   `teeth_height = 1.1`
*   `screw_hole_diameter = 3`
*   `nut_diameter = 5.8`
*   `nut_thickness = 2.5`

For the X-axis version I need a length parameter, `length_plus = 4`.

Could you generate the OpenSCAD code for these? It needs to work for all the belt types and be fully parametric with user-configurable support structures.  I'd like separate `x_holder()` and `y_holder()` modules to make it easier to generate either individually. I'd also like a main module that creates a standard set of X and Y holders as I have in my existing code to provide a good starting point.

[Assistant]
graber_i3_xy_belt_holder_v1.scad:
```
// Graber i3 xy belt holder v1.0 by ValterFC
// december / 2013

// x axis not yet - sorry

// ******************************************************
// Select your belt type *NOT TESTED*
// ******************************************************
//T2.5
//belt_tooth_distance = 2.5;
//belt_tooth_ratio = 0.8;

//T5 (strongly discouraged)
//belt_tooth_distance = 5;
//belt_tooth_ratio = 1.05;

//HTD3
//belt_tooth_distance = 3;
//belt_tooth_ratio = 1.05;

//MXL
//belt_tooth_distance = 2.032;
//belt_tooth_ratio = 0.94;

//GT2
belt_tooth_distance = 2; // [2.5:T2.5, 5:T5, 3:HTD3, 2.032:MXL, 2:GT2]
belt_tooth_ratio = 0.8; // [0.8:T2.5, 1.05:T5, 1.05:HTD3, 0.94:MXL, 0.8:GT2]

//what file to generate?
make_object = 0; // [0:fixed object, 1:tensiometer object]

//side nut orientation
side_nut_orientation = 0; // [0:normal, 1:another way]

/*Non customizer variables*/
length = 17+0;
width = 10+0;
thickness = 21+0;
extra = 0.2+0;
belt_width = 6+0;
belt_thickness = 1.2+0; // Excluding teeth height (0.9)
belt_pitch = belt_tooth_distance+0;
teeth_height = 1.1+0;
teeth_width = belt_tooth_ratio+0;
screw_hole_diameter = 3+0;
nut_diameter = 5+0.8;
nut_thickness = 2.5+0;

// from thingiverse.com/thing:9347
module roundedRect(size, radius)
{
	x = size[0]-radius;
	y = size[1];
	z = size[2];
	linear_extrude(height=z)
	hull()
	{
		// place 4 circles in the corners, with the given radius
  		translate([(-x/2)+(radius/2), (-y/2)+(radius/2), 0])
			circle(r=radius);

		translate([(x/2)-(radius/2), (-y/2)+(radius/2), 0])
			circle(r=radius);

		translate([(-x/2)+(radius/2), (y/2)-(radius/2), 0])
			circle(r=radius);

		translate([(x/2)-(radius/2), (y/2)-(radius/2), 0])
			circle(r=radius);
	}
}

module sidenut() {
	//nut fitting
	if (make_object == 0) cylinder( h=nut_thickness+0.8,r=nut_diameter/2+extra*2,$fn=6 );
	//the screw cylinder
	cylinder( h=thickness+1, r=screw_hole_diameter/2, $fn=30);
}

difference()
{
	roundedRect([length,thickness,width], 2);

	//+++++++++++++++++++++++++++++++++++++++
	// belt top
	translate([-length/2,((thickness+belt_thickness+teeth_height)/4)-teeth_height,width-belt_width])
		cube([length,belt_thickness,belt_width+1]);

	// tooth top
	for( x = [0:belt_pitch:length+1] )
	{
		translate([x-length/2,((thickness+belt_thickness+teeth_height)/4),width-belt_width])
   		rotate(a=180,v=[0,0,1])
			cube(size=[belt_pitch-teeth_width,teeth_height+belt_thickness,belt_width+1], center=false);
	}
	//+++++++++++++++++++++++++++++++++++++++

	//+++++++++++++++++++++++++++++++++++++++
	// belt button
	translate([-length/2,((thickness+belt_thickness+teeth_height)/4)-(teeth_height+8.7),width-belt_width])
		cube([length,belt_thickness,belt_width+1]);

	// tooth button
	for( x = [0:belt_pitch:length+1] )
	{
		translate([x-length/2,((thickness+belt_thickness+teeth_height)/4)-7.2,width-belt_width])
   		rotate(a=180,v=[0,0,1])
			cube(size=[belt_pitch-teeth_width,teeth_height+belt_thickness,belt_width+1], center=false);
	}
	//+++++++++++++++++++++++++++++++++++++++

	// top nut
	if (make_object == 1)
	{
		translate([-3.0,1,width+1]) rotate([180,0,0])
			cylinder( h=width+2,r=screw_hole_diameter/2,$fn=30);

		translate([0,1,0]) rotate([180,0,0])
		cube(size=[width-4,screw_hole_diameter,30], center=true);

		translate([+3.0,1,width+1]) rotate([180,0,0])
			cylinder( h=width+2,r=screw_hole_diameter/2,$fn=30);
	}

	translate([0,1,width+1]) rotate([180,0,0])
		cylinder( h=width+2, r=screw_hole_diameter/2, $fn=30);

	// side nut
	if (side_nut_orientation == 0)
	{
		translate([-length/2,-nut_diameter*1.3,width/2]) rotate([0,-270,0]) //original way
			sidenut();
	} else {
		translate([-length/2,-nut_diameter*1.42,width/2]) rotate([0,-270,0]) rotate([0,0,90]) //another way
			sidenut();
	}
}

```
graber_i3_xy_beltholder_v2.scad:
```
// Graber i3 xy belt holder v2.00 by ValterFC
// January / 2014

// ******************************************************
// Select your belt type *NOT TESTED*
// ******************************************************
//T2.5
//belt_tooth_distance = 2.5;
//belt_tooth_ratio = 0.8;

//T5 (strongly discouraged)
//belt_tooth_distance = 5;
//belt_tooth_ratio = 1.05;

//HTD3
//belt_tooth_distance = 3;
//belt_tooth_ratio = 1.05;

//MXL
//belt_tooth_distance = 2.032;
//belt_tooth_ratio = 0.94;

//GT2
belt_tooth_distance = 2; // [2.5:T2.5, 5:T5, 3:HTD3, 2.032:MXL, 2:GT2]
belt_tooth_ratio = 0.8; // [0.8:T2.5, 1.05:T5, 1.05:HTD3, 0.94:MXL, 0.8:GT2]

//support generation
generate_support = 1; // [0:no, 1:yes]

//side nut orientation
side_nut_orientation = 0; // [0:normal, 1:another way]

//call main function
main();

module main()
{
	//make_object 0:fixed object, 1:tensiometer object

	//Y holder
	translate([-14,-25,width+1]) y_holder(0);
	translate([+14,-25,width+1]) y_holder(1);

	//X holder
	translate([-14,5,width+1]) x_holder(0);
	translate([+14,5,width+1]) x_holder(1);
}

/*Non customizer variables*/
length = 17+0;
width = 10+0;
thickness = 21+0;
extra = 0.2+0;
belt_width = 6+0.6;
belt_thickness = 1.2+0; // Excluding teeth height (0.9)
belt_pitch = belt_tooth_distance+0;
teeth_height = 1.1+0;
teeth_width = belt_tooth_ratio+0;
screw_hole_diameter = 3+0;
nut_diameter = 5+0.8;
nut_thickness = 2.5+0;

//for x holder
length_plus = 0+4;
length_xholder = length+length_plus;
bolt_head_diam = 0+nut_diameter; //adjuste bolt head diameter
//trim block variables
trim_width = nut_thickness+0.5;
trim_pos = (length/2)-(trim_width/2);

//####################################################
// X
//####################################################
module sidenutX_support(make_object) {
	sup_size = 0.44;

	//support of side nut X
	if ((make_object == 1) && (generate_support == 1)) {
		translate([2,-9.5,2])
			cube([8,sup_size,7]);

		translate([2,-7.8,2])
			cube([8,sup_size,7]);

		translate([2,-6,2])
			cube([8,sup_size,7]);
	}
}

module sidenutX(make_object) {
	if (make_object == 0)
	{
		translate([0,0,trim_pos])
			cylinder( h=nut_thickness+trim_width,r=nut_diameter/2+extra*2,$fn=6 );
	} else {
		translate([0,0,trim_pos])
			cylinder( h=length_xholder-trim_pos, r=bolt_head_diam/2, $fn=30);
	}

	//the screw cylinder
	translate([0,0,-(length_plus/2)])
		cylinder( h=thickness+1, r=screw_hole_diameter/2, $fn=30);

	//trim block
	translate([-6,-4,trim_pos])
		cube([7,nut_diameter+1,trim_width]);
}

module x_holder(make_object) {
	union() {

	difference()
	{
		roundedRect([length+length_plus,thickness,width], 2);

		//+++++++++++++++++++++++++++++++++++++++
		// belt top
		translate([(-length-length_plus)/2,((thickness+belt_thickness+teeth_height)/4)-teeth_height,width-belt_width-4])
			cube([length+length_plus,belt_thickness+6,belt_width+4]);

		// tooth top
		for( x = [0:belt_pitch:length+1] )
		{
			translate([x-length/2,((thickness+belt_thickness+teeth_height)/4),width-belt_width-4])
			rotate(a=180,v=[0,0,1])
				cube(size=[belt_pitch-teeth_width,teeth_height+belt_thickness,belt_width+4], center=false);
		}
		//+++++++++++++++++++++++++++++++++++++++

		//+++++++++++++++++++++++++++++++++++++++
		// belt button
		translate([(-length-length_plus)/2,((thickness+belt_thickness+teeth_height)/4)-(teeth_height+8.7),width-belt_width])
			cube([length+length_plus,belt_thickness,belt_width+1]);

		// tooth button
		for( x = [0:belt_pitch:length+1] )
		{
			translate([x-length/2,((thickness+belt_thickness+teeth_height)/4)-7.2,width-belt_width])
			rotate(a=180,v=[0,0,1])
				cube(size=[belt_pitch-teeth_width,teeth_height+belt_thickness,belt_width+1], center=false);
		}
		//+++++++++++++++++++++++++++++++++++++++

		// top bolt hole
		if (make_object == 1)
		{
			translate([-1.0,1,width+1]) rotate([180,0,0])
				cylinder( h=width+2,r=screw_hole_diameter/2,$fn=30);

			translate([2,1,0]) rotate([180,0,0])
				cube(size=[width-4,screw_hole_diameter,30], center=true);

			translate([+5.0,1,width+1]) rotate([180,0,0])
				cylinder( h=width+2,r=screw_hole_diameter/2,$fn=30);

			//plus hole (positive ou negative position)
			translate([+3+(length_plus/2),1,width+1]) rotate([180,0,0])
				cylinder( h=width+2, r=screw_hole_diameter/2, $fn=30);
		} else {
			//plus hole (positive ou negative position)
			translate([-3-(length_plus/2),1,width+1]) rotate([180,0,0])
				cylinder( h=width+2, r=screw_hole_diameter/2, $fn=30);
		}

		// side nut
		if (side_nut_orientation == 0)
		{
			translate([-length/2,-nut_diameter*1.3,width/2]) rotate([0,-270,0]) //original way
				sidenutX(make_object);
		} else {
			translate([-length/2,-nut_diameter*1.42,width/2]) rotate([0,-270,0]) rotate([0,0,90]) //another way
				sidenutX(make_object);
		}
	}

	sidenutX_support(make_object);
	}
}

//####################################################
// Y
//####################################################
module sidenutY(make_object) {
	//nut fitting
	if (make_object == 0) cylinder( h=nut_thickness+0.8,r=nut_diameter/2+extra*2,$fn=6 );
	//the screw cylinder
	cylinder( h=thickness+1, r=screw_hole_diameter/2, $fn=30);
}

module y_holder(make_object) {
	length = 17+0;
	width = 10+0;
	thickness = 21+0;
	extra = 0.2+0;
	belt_width = 6+0.6;
	belt_thickness = 1.2+0; // Excluding teeth height (0.9)
	belt_pitch = belt_tooth_distance+0;
	teeth_height = 1.1+0;
	teeth_width = belt_tooth_ratio+0;
	screw_hole_diameter = 3+0;
	nut_diameter = 5+0.8;
	nut_thickness = 2.5+0;

	difference()
	{
		roundedRect([length,thickness,width], 2);

		//+++++++++++++++++++++++++++++++++++++++
		// belt top
		translate([-length/2,((thickness+belt_thickness+teeth_height)/4)-teeth_height,width-belt_width])
			cube([length,belt_thickness,belt_width+1]);

		// tooth top
		for( x = [0:belt_pitch:length+1] )
		{
			translate([x-length/2,((thickness+belt_thickness+teeth_height)/4),width-belt_width])
			rotate(a=180,v=[0,0,1])
				cube(size=[belt_pitch-teeth_width,teeth_height+belt_thickness,belt_width+1], center=false);
		}
		//+++++++++++++++++++++++++++++++++++++++

		//+++++++++++++++++++++++++++++++++++++++
		// belt button
		translate([-length/2,((thickness+belt_thickness+teeth_height)/4)-(teeth_height+8.7),width-belt_width])
			cube([length,belt_thickness,belt_width+1]);

		// tooth button
		for( x = [0:belt_pitch:length+1] )
		{
			translate([x-length/2,((thickness+belt_thickness+teeth_height)/4)-7.2,width-belt_width])
			rotate(a=180,v=[0,0,1])
				cube(size=[belt_pitch-teeth_width,teeth_height+belt_thickness,belt_width+1], center=false);
		}
		//+++++++++++++++++++++++++++++++++++++++

		// top bolt hole
		if (make_object == 1)
		{
			translate([-3.0,1,width+1]) rotate([180,0,0])
				cylinder( h=width+2,r=screw_hole_diameter/2,$fn=30);

			translate([0,1,0]) rotate([180,0,0])
			cube(size=[width-4,screw_hole_diameter,30], center=true);

			translate([+3.0,1,width+1]) rotate([180,0,0])
				cylinder( h=width+2,r=screw_hole_diameter/2,$fn=30);
		}

		translate([0,1,width+1]) rotate([180,0,0])
			cylinder( h=width+2, r=screw_hole_diameter/2, $fn=30);

		// side nut
		if (side_nut_orientation == 0)
		{
			translate([-length/2,-nut_diameter*1.3,width/2]) rotate([0,-270,0]) //original way
				sidenutY(make_object);
		} else {
			translate([-length/2,-nut_diameter*1.42,width/2]) rotate([0,-270,0]) rotate([0,0,90]) //another way
				sidenutY(make_object);
		}
	}
}

// from thingiverse.com/thing:9347
module roundedRect(size, radius)
{
	x = size[0]-radius;
	y = size[1];
	z = size[2];
	linear_extrude(height=z)
	hull()
	{
		// place 4 circles in the corners, with the given radius
  		translate([(-x/2)+(radius/2), (-y/2)+(radius/2), 0])
			circle(r=radius);

		translate([(x/2)-(radius/2), (-y/2)+(radius/2), 0])
			circle(r=radius);

		translate([(-x/2)+(radius/2), (y/2)-(radius/2), 0])
			circle(r=radius);

		translate([(x/2)-(radius/2), (y/2)-(radius/2), 0])
			circle(r=radius);
	}
}

```


[User]
I'm looking to create a customizable box with rounded corners and a lid that fits snugly. I've seen some designs that use `minkowski()` to create the rounded corners, and I'd like to do something similar.

Here's the basic idea:

*   **Box Dimensions:** I need to be able to specify the overall width, depth, and height of the box.
*   **Corner Radius:**  I also need to set the radius of the rounded corners.
*   **Wall Thickness:** The box will have walls of a certain thickness.
*   **Lid:** The box should have a lid that fits into it with a small lip.
*   **Lip Height:**  I need to specify the height of that lid lip.
*   **Clearance:** The lip should have a small clearance (gap) between it and the inside of the box to allow for a snug fit.
*   **Customizable Resolution:** I'd like to be able to control the curve resolution ($fn) for smoother curves.

Specifically, I want two main modules: one for the box and one for the lid with the lip, and I want them to be easily positioned using `translate()` to see them side-by-side.

For the box:
* it should be a difference of two minkowski'd cubes with cylinders to round corners.

For the lid with lip:
* the lid should be one minkowski'd cube,
* the lip is one minkowski'd cube subtracted by another minkowski'd cube.

I'm not using any particular libraries, just core OpenSCAD functionality. I'd prefer not to use `offset()` in favor of `minkowski()`.  Could you write an OpenSCAD file (or files if it makes more sense) that provides these features? I think I've worked through the issues, but feel free to ask me for any clarification or additional details you might need.

[Assistant]
AnotherCustomizableRoundedCornerBox3.scad:
```
// Another Customizable Rounded Corner box
// Hari Wiguna, Dec 2013

// Box Outer dimensions (in mmm)
Width = 20;
Depth = 20;
Height = 10;
Radius = 4;
WallThickness = 1;

// Lip at bottom of the lid that fits into the box
LipHeight = 2;

// Clearance between the lid lip and the box inside. Smaller = Tighter fit
Clearance = 0.2;

// Curve resolution (higher=smoother)
$fn=30;
Width2 = Width - WallThickness;
Depth2 = Depth - WallThickness;
Radius2 = Radius - WallThickness;
Height2 = Height - WallThickness;

Width3 = Width2 - 2*WallThickness;
Depth3 = Depth2 - 2*WallThickness;

Box();
translate([Width+5,0,0]) LidWithLip();

module LidWithLip()
{
	union()
	{
		Lid();
		LidLip();
	}
}

module Lid()
{
	minkowski()
	{
		cube([Width-2*Radius,Depth-2*Radius,WallThickness/2]);
		cylinder(WallThickness/2,Radius,Radius);
	}
}

module LidLip()
{
	difference()
	{
		translate([WallThickness/4+Clearance,WallThickness/4+Clearance,WallThickness])
		minkowski()
		{
			cube([Width2-2*Radius-2*Clearance, Depth2-2*Radius-2*Clearance, LipHeight/2]);
			cylinder(LipHeight/2, Radius2, Radius2);
		}

		translate([WallThickness*1.5,WallThickness*1.5,WallThickness])
		minkowski()
		{
			cube([Width3-2*Radius, Depth3-2*Radius, LipHeight/2]);
			cylinder(LipHeight/2, Radius2, Radius2);
		}
	}
}

module Box()
{
	difference()
	{
		OuterShell();
		InnerShell();
	}
}

module OuterShell()
{
	minkowski()
	{
		cube([Width-2*Radius,Depth-2*Radius,Height/2]);
		cylinder(Height/2,Radius,Radius);
	}
}

module InnerShell()
{
	translate([WallThickness/2,WallThickness/2,WallThickness])
	minkowski()
	{
		cube([Width2-(2*Radius), Depth2-(2*Radius), Height/2]);
		cylinder(Height2/2, Radius2, Radius2);
	}
}
```


[User]
I'd like to design a parametric bottle opener, and I've got a pretty specific idea in mind. It'll need to be able to both remove and tighten bottle caps, which means having two sets of gripping spines. I'd also like the option to add a handle for extra leverage.

Here are the parameters I'm thinking of:

*   `cap_dia`: The diameter of the bottle cap.
*   `cap_height`: The height of the bottle cap.
*   `interference`: A fraction representing how much the spines protrude into the cap's diameter for a good grip.
*   `handle_length`: The length of the handle (if included).
*   `handle`: A boolean, either "yes" or "no", to control whether or not to include the handle.
*   `outer_dia`: The outer diameter of the opener itself.
*   `inner_dia`: The inner diameter where the spines will be, automatically derived from `cap_dia` and `interference`.
*   `wall_thickness`: The thickness of the main body of the opener.
*   `spine_angle`: The angle of the spines relative to the radius.
*   `spine_thickness`: The thickness of each individual spine.
*   `num_spines`: The total number of spines.

The opener should consist of a cylindrical body with two sets of spines, one at the top and one at the bottom, for both tightening and removing. If a handle is specified it should be a rounded rectangular extrusion off the side. The handle should be joined to the main body smoothly using the roundedCube module.  I'd like to use the `roundedCube` function, but it is defined in the example, you may need to redefine it.

Can you generate a parametric OpenSCAD file for this? I would like to use the OpenSCAD defaults for `$fa` and `$fs`, unless I specify otherwise.

[Assistant]
bottle_opener_w_handle.scad:
```
//parametric ›soda bottle opener and closer wrench
//John Finch 12/6/13

cap_dia = 30.5;
cap_height = 15;
interference = .01;  //fraction the spine protruding into cap diameter
handle_length = 100;
handle = "yes";  // yes or no

outer_dia = 45;
inner_dia = cap_dia * (1-interference);
wall_thickness = 2;
spine_angle = 15;
spine_thickness = 1;
num_spines = 36;

spine_length = (outer_dia/2-wall_thickness-inner_dia/2)/cos(spine_angle);

fa=0.1;
fs=0.5;

module roundedCube(size, radius)  //Using hull() and spheres
{
x = size[0];
y = size[1];
z = size[2];
fn=20;

//Set bounds on the radius
radius=max(0.1,radius);
radius=min(radius,min(x,min(y,z))/2);
//echo ("Radius= ",radius);

//echo (x, y, z, radius);

hull()
	{
	translate([radius,radius,radius])
	sphere(r=radius,$fn=fn);

	translate([radius,radius,z-radius])
	sphere(r=radius,$fn=fn);

	translate([x-radius,radius,radius])
	sphere(r=radius,$fn=fn);

	translate([x-radius,radius,z-radius])
	sphere(r=radius,$fn=fn);

	translate([radius,y-radius,radius])
	sphere(r=radius,$fn=fn);

	translate([radius,y-radius,z-radius])
	sphere(r=radius,$fn=fn);

	translate([x-radius,y-radius,radius])
	sphere(r=radius,$fn=fn);

	translate([x-radius,y-radius,z-radius])
	sphere(r=radius,$fn=fn);

	}
}
module spine(){
//echo(outer_dia/2-wall_thickness-spine_length);
//echo(-spine_thickness/2);
difference(){

		translate ([outer_dia/2-wall_thickness-spine_length*cos(spine_angle),-spine_thickness/2-spine_length*sin(spine_angle),0])
		rotate([0,0,spine_angle])
		cube([spine_length+.5,spine_thickness,cap_height/2]);

	translate([outer_dia/2-wall_thickness-spine_length,spine_length/2,0])
	rotate([90,0,0])
	cylinder(h=spine_length,r1=spine_length, r2=spine_length,$fn=3);
	}

	difference(){

	translate ([outer_dia/2-wall_thickness-spine_length*cos(spine_angle),-spine_thickness/2+spine_length*sin(spine_angle),cap_height/2])
	rotate([0,0,-spine_angle])
	cube([spine_length+.5,spine_thickness,cap_height/2]);

	translate([outer_dia/2-wall_thickness-spine_length,spine_length/2,cap_height/2])
	rotate([90,0,0])
	cylinder(h=spine_length,r1=spine_length, r2=spine_length,$fn=3);
	}

}

translate([0,0,2])
difference(){
	union(){
		cylinder(h = cap_height, r1 = outer_dia/2, r2 = outer_dia/2, $fn=12);
		//Insert handle
		if (handle == "yes"){
		translate([0,-15,-2])
		roundedCube([handle_length+outer_dia/2,30,10],5);
		}
	}

	cylinder(h = cap_height, r1 = outer_dia/2-wall_thickness, r2 = outer_dia/2-wall_thickness, $fn=100); // $fa=fa, $fs=fs);

	}
rot_angle = 360/num_spines;
translate([0,0,2])
for ( i = [ 1 : num_spines ] )
	{
	rotate([0,0,i*rot_angle])
	spine();
	}

translate([0,0,0])
cylinder(h = 2, r1 = outer_dia/2-2, r2 = outer_dia/2, $fn=12);

//spine();

```


[User]
Hey there! I'm looking to create a customizable landing gear adapter for multi-copters, something I can 3D print. I've seen a design that's pretty close, but I'd like to have it created from scratch using OpenSCAD, with a few specific requirements.

Essentially, I need two main parts: an "adapter" and a "stopper". The "adapter" will allow me to attach shorter booms at a 45-degree angle to my main booms, effectively creating a landing gear. The "stopper" is a simpler design.

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

*   **`what_part`:** This should be a string that lets me choose between generating the "adapter" or the "stopper" part.
*   **`shaft_length`:** An integer for the length of the main shaft of the part.
*   **`inner_diameter`:** An integer for the inner diameter of the part, which will fit over my existing booms.
*   **`wall_thickness`:** An integer defining how thick the walls of the part should be.
*   **`screw_diameter`:** An integer for the diameter of the screw holes. I'd like to be able to set this to 0 to omit the holes.

For the "adapter" part:
*   It should essentially consist of two intersecting tubes or hollowed-out shafts: the main one, and a secondary one at a 45 degree angle.
*   I need screw holes in at least two spots: one along the main shaft and one along the angled shaft to secure the booms.

For the "stopper" part:
*   I need a tube or hollowed shaft that is blocked at one end by a circular section, that essentially forms a "cap".
*   I need a screw hole going through the side of the capped section.

Could you generate the necessary OpenSCAD code for me? I don't have any specific library requirements, just the basic functionality I've described. I'm looking for one or more SCAD files. Thanks!

[Assistant]
rotorprint_landing_adapter.scad:
```
/**
 *
 * RotorPrint, customizable landing gear adapter
 * Made by Dave de Fijter - 2013
 *
**/

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

/* [Global] */

what_part = "adapter"; // [adapter, stopper]

// The length of the landing gear part, the longer the more rigid
shaft_length = 60;

// The inner diameter of the part, should be about the same as the outer diameter of your tubes.
inner_diameter = 12;

// The thickness of the walls, the thicker the stronger, but might look very bulky if you overdo this.
wall_thickness = 3;

// The diameter of the screw hole, use 0 for no holes
screw_diameter = 3;

/* [Hidden] */

$fn = 100;

choose_part();

module choose_part() {

	if(what_part == "adapter") {
		adapter();
	} else {
		landing();
	}
}

module landing() {
	difference() {
		union() {
			difference() {
				cube([shaft_length+inner_diameter*2, inner_diameter + 2*wall_thickness, inner_diameter + 2*wall_thickness]);

				translate([0-wall_thickness, wall_thickness, wall_thickness]) {
					cube([shaft_length+wall_thickness, inner_diameter, inner_diameter]);
				}
			}

			difference() {

				translate([shaft_length+inner_diameter*1.0, wall_thickness + (inner_diameter/2),  wall_thickness + (inner_diameter/2)]) {
					sphere(r=inner_diameter*1.5);
				}

				translate([shaft_length + inner_diameter*1.0, wall_thickness + (inner_diameter / 2),  wall_thickness + (inner_diameter / 2)]) {
					rotate([0, 45, 0]) {
						translate([-1.5*inner_diameter, 0, 0]) {
							cube(inner_diameter*3, center=true);
						}
					}
				}

			}

		}

		if(screw_diameter > 0) {
			translate([shaft_length / 2, inner_diameter + (3*wall_thickness), wall_thickness+(inner_diameter/2)]) {
				rotate(90, [1, 0, 0]) {
					cylinder(r=screw_diameter/2, h=(inner_diameter + (4 * wall_thickness)));
				}
			}
		}
	}
}

module adapter() {
	difference() {
		difference() {

			union() {
				difference() {

					difference() {
						hull() {  outlines(false); }
						outlines(false);
					}
					translate([0, -1, 0]) {
						scale([0.9, 1.1, 0.95]) {
							difference() {
								hull() {  outlines(false); }
								outlines(false);
							}
						}
					}
				}

				difference() {
					outlines(false);
					outlines(true);
				}
			}

			union() {

				if(screw_diameter > 0) {
					translate([shaft_length / 2, inner_diameter + (3*wall_thickness), wall_thickness+(inner_diameter/2)]) {
						rotate(90, [1, 0, 0]) {
							cylinder(r=screw_diameter/2, h=(inner_diameter + (4 * wall_thickness)));
						}
					}

					rotate(45, [0, 1, 0]) {
						translate([shaft_length / 1.5, inner_diameter + (3*wall_thickness), wall_thickness+(inner_diameter/2)]) {
							rotate(90, [1, 0, 0]) {
								cylinder(r=screw_diameter/2, h=(inner_diameter + (4 * wall_thickness)));
							}
						}
				}
				}
		}
		}

		outlines(true);

	}
}

module outlines(render_inner) {

if(render_inner) {

		translate([-5, wall_thickness, wall_thickness]) {
			cube([shaft_length + 50, inner_diameter, inner_diameter]);
		}

		translate([0 + inner_diameter, wall_thickness, (wall_thickness + wall_thickness/2) - inner_diameter]) {
			rotate(45, [0, 1, 0]) {
				cube([shaft_length + 15, inner_diameter, inner_diameter]);
			}
		}

} else {
	cube([shaft_length, inner_diameter + wall_thickness*2, inner_diameter + wall_thickness*2]);

	translate([0, 0, 0]) {
		rotate(45, [0, 1, 0]) {
			cube([shaft_length-wall_thickness*2, inner_diameter + wall_thickness*2, inner_diameter + wall_thickness*2]);
		}
	}
}

}

//cube(inner_diameter + wall_thickness
```


[User]
I'd like to get a custom coin design made for use in shopping carts. It should be parametric, so I can adjust the size and text on it, and it needs to allow me to generate just the text, just the coin, or both together. I need it to use the `write/Write.scad` library to write the text.

Specifically, the coin needs the following parameters:
*   `part`: A string, which can be "coin", "text", or "both" to output only the coin, the text, or both, respectively.
*   `coin_diameter`: The diameter of the coin in millimeters.
*   `coin_thickness`: The thickness of the coin.
*   `hole_radius`: The radius of the hole in the coin, for attachment to a keychain, for example.
*   `text`: The text to be written on the coin.
*   `font_size`: The height of the text.
*   `font_spacing`: The spacing between characters in the text.
*  `fn`: The number of facets in the cylinder.

The coin itself should be a simple cylinder, and it should have a smaller cylindrical hole going through it, placed near the edge of the coin. The text should be engraved into the coin (or exist as a separate part, depending on the `part` parameter). It needs to be written on the top of the coin. Also, the text needs to be centered on the coin, and it should use the specified font size and spacing. The default values should be: `part = "both"`, `coin_diameter=27`, `coin_thickness=2`, `hole_radius=3`, `text="TO BE OR NOT TO BE"`, `font_size=3`, `font_spacing=1.3`, and `fn=300`. The `write/Write.scad` library should be included in the file. It should be noted that the hole should be offset from center, not through the very center of the coin itself.

The code should produce the coin with the text, text alone or just the coin depending on the `part` variable.

[Assistant]
coin.scad:
```
include <write/Write.scad>

/* [Global] */
part = "both"; // [coin:Coin with the text carved out,text:Text only,both:Coin with text]

coin_diameter=27;
coin_thickness=2;
hole_radius=3;
text="TO BE OR NOT TO BE";
font_size=3;
font_spacing=1.3;

/* [Hidden] */
radius=coin_diameter/2;
fn=300;

module txt(){
 writecylinder(text,[0,0,0],radius,coin_thickness*2-0.5,face="top",center=true,h=font_size,space=font_spacing);
}

if(part=="coin" || part=="both"){

	difference(){
	 color("yellow")cylinder(h=coin_thickness, r=radius, $fn=fn);
	  translate([0,-radius+hole_radius+3,-1]){
	   cylinder(h=coin_thickness+2, r=hole_radius, $fn=fn);
	  }
	 txt();
	}

}

if (part=="text" || part=="both"){
	color("black")txt();
}

```


[User]
I'm looking for an OpenSCAD design for a customizable box. I'd like to be able to specify the width, height, and depth of the box, as well as the material thickness. I need the design to output both STL and DXF files. The box should have a separate lid.

Specifically, the box should have a basic rectangular shape, but I'd also like to be able to control how much of the height is used for the lid vs the base, with a parameter that acts as a ratio. Also, I'd like there to be spacing between the parts to allow for the material thickness. The parts should be designed to slot together, using tabs and slots.

I think the design needs the following parts: a top, two side pieces, a front (made of an upper and lower section), a back, and a bottom. Can you make the design so that it arranges the pieces such that they could be cut out of a single sheet of material in either DXF format or as a series of STL files?

I'm thinking the following parameters would be good:

*   `box_width`: The width of the box.
*   `box_height`: The overall height of the box.
*   `box_depth`: The depth of the box.
*  `material_thickness`: The thickness of the material to be used.
*   `output_type`: Either "STL" or "DXF"
*   `spacing`: The spacing between the parts.
*   `ratio`: The ratio that separates the height of the lid and the base, from 0 to 1.

I don't need anything fancy, just a basic, functional box. Let me know if you have any questions. I do not need any outside libraries, just vanilla OpenSCAD.

[Assistant]
Customizable_box.scad:
```

//Customizable Box
//By Iron Momo

/* [Basic] */
box_width = 250;
box_height = 200;
box_depth = 100;
material_thickness = 5; //[3,5,10]

output_type = "STL"; //[DXF,STL]

/* [Advanced] */
spacing = 5; //[1,5,10]
ratio = 0.5; //[0.25,0.5]

/* [Hidden] */
h2 = box_height*ratio; //Height of the upper part
h1 = box_height*(1-ratio); //Height of the lower part

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

if(output_type=="STL")
{linear_extrude(height = material_thickness, center = false) box_creation();
}

if(output_type=="DXF")
{box_creation();}

/*--------------*/
/* BOX CREATION */
/*--------------*/
module box_creation()
{
	top();
	translate([0,spacing+box_depth+2*material_thickness]) front_1();
	translate([0,2*spacing+box_depth+h1+3*material_thickness]) front_2();
	translate([0,3*spacing+4*material_thickness+box_depth+h1+h2,0]) bottom();
	translate([box_width+2*material_thickness+spacing,0,0])rear();
	translate([box_width+2*material_thickness+spacing,material_thickness+box_height+spacing,0]) sides();
}

/*----------------*/
/* Top of the box */
/*----------------*/
module top()
{

//Basic shape
translate([material_thickness,material_thickness,0]) square([box_width,box_depth]);

//Notches
translate([0,material_thickness+box_depth,0]) square([box_width+2*material_thickness,material_thickness]);

translate([0,material_thickness,0]) square([material_thickness,box_depth/3]);
translate([0,material_thickness+2*box_depth/3,0]) square([material_thickness,box_depth/3]);

translate([material_thickness+box_width,material_thickness,0]) square([material_thickness,box_depth/3]);
translate([material_thickness+box_width,material_thickness+2*box_depth/3,0]) square([material_thickness,box_depth/3]);

translate([material_thickness+box_width/5,0,0]) square([box_width/5,material_thickness]);
translate([material_thickness+3*box_width/5,0,0]) square([box_width/5,material_thickness]);

}

/*--------------------*/
/* 2 sides of the box */
/*--------------------*/
module sides()
{
//1st side, upper and lower part
side_1();
translate ([material_thickness,h1+spacing+material_thickness,0]) side_2();

//2nd side is just a mirrored one
translate([2*box_depth+4*material_thickness+spacing,0,0])
{
	mirror ([1,0,0])
		{
		side_1();
		translate ([material_thickness,h1+spacing+material_thickness,0]) side_2();
		}
	}
}
/*------------------*/
/* Side: Upper part */
/*------------------*/
module side_2()
{

//Basic shape
polygon(points=[[0,h2],[box_depth,h2],[box_depth,0]], paths=[[0,1,2]]);

//Notches
translate([box_depth,h2/5,0]) square([material_thickness,h2/5]);
translate([box_depth,3*h2/5,0]) square([material_thickness,h2/5]);

translate([box_depth/3,h2,0]) square([box_depth/3,material_thickness]);
}

/*------------------*/
/* Side: Lower part */
/*------------------*/
module side_1()
{

//Basic shape
translate([material_thickness,material_thickness,0])
	{
	square([box_depth,h1]);
	polygon(points=[[0,box_height],[0,h1],[box_depth,h1]], paths=[[0,1,2]]);
	}

//Notches
translate([material_thickness+box_depth/3,0,0]) square([box_depth/3,material_thickness]);

translate([0,material_thickness+box_height/7,0]) square([material_thickness,box_height/7]);
translate([0,material_thickness+3*box_height/7,0]) square([material_thickness,box_height/7]);
translate([0,material_thickness+5*box_height/7,0]) square([material_thickness,box_height/7]);

translate([material_thickness+box_depth,material_thickness+h1/5,0]) square([material_thickness,h1/5]);
translate([material_thickness+box_depth,material_thickness+3*h1/5,0]) square([material_thickness,h1/5]);
}

/*-------------------------*/
/* Front plate: Upper part */
/*-------------------------*/
module front_2()
{

//Basic shape
translate([material_thickness,0,0]) square([box_width,h2]);

//Notches
translate([0,h2,0]) square([box_width/5+material_thickness,material_thickness]);
translate([material_thickness+2*box_width/5,h2,0]) square([box_width/5,material_thickness]);
translate([material_thickness+4*box_width/5,h2,0]) square([material_thickness+box_width/5,material_thickness]);

square([material_thickness,h2/5]);
translate([0,2*h2/5,0]) square([material_thickness,h2/5]);
translate([0,4*h2/5,0]) square([material_thickness,h2/5]);

translate([material_thickness+box_width,0,0]) square([material_thickness,h2/5]);
translate([material_thickness+box_width,2*h2/5,0]) square([material_thickness,h2/5]);
translate([material_thickness+box_width,4*h2/5,0]) square([material_thickness,h2/5]);
}

/*-------------------------*/
/* Front plate: Lower part */
/*-------------------------*/
module front_1()
{

//Basic shape
translate([material_thickness,material_thickness,0]) square([box_width,h1]);

//Notches
square([box_width/5+material_thickness,material_thickness]);
translate([material_thickness+2*box_width/5,0,0]) square([box_width/5,material_thickness]);
translate([material_thickness+4*box_width/5,0,0]) square([material_thickness+box_width/5,material_thickness]);

translate([0,material_thickness,0]) square([material_thickness,h1/5]);
translate([0,material_thickness+2*h1/5,0]) square([material_thickness,h1/5]);
translate([0,material_thickness+4*h1/5,0]) square([material_thickness,h1/5]);

translate([material_thickness+box_width,material_thickness,0]) square([material_thickness,h1/5]);
translate([material_thickness+box_width,material_thickness+2*h1/5,0]) square([material_thickness,h1/5]);
translate([material_thickness+box_width,material_thickness+4*h1/5,0]) square([material_thickness,h1/5]);
}

/*------------*/
/* Back plate */
/*------------*/
module rear()
{

//Basic shape
translate([material_thickness,material_thickness,0])
	{
	difference()
		{
		square([box_width,box_height]);
		translate([10,box_height-2,0]) square([box_width-20,2]);
		}
	}

square([box_width/5+material_thickness,material_thickness]);

//Notches
translate([material_thickness+2*box_width/5,0,0]) square([box_width/5,material_thickness]);
translate([material_thickness+4*box_width/5,0,0]) square([box_width/5+material_thickness,material_thickness]);

translate([0,material_thickness,0]) square([material_thickness,box_height/7]);
translate([0,material_thickness+2*box_height/7,0]) square([material_thickness,box_height/7]);
translate([0,material_thickness+4*box_height/7,0]) square([material_thickness,box_height/7]);
translate([0,material_thickness+6*box_height/7,0]) square([material_thickness,box_height/7]);

translate([material_thickness+box_width,material_thickness,0]) square([material_thickness,box_height/7]);
translate([material_thickness+box_width,material_thickness+2*box_height/7,0]) square([material_thickness,box_height/7]);
translate([material_thickness+box_width,material_thickness+4*box_height/7,0]) square([material_thickness,box_height/7]);
translate([material_thickness+box_width,material_thickness+6*box_height/7,0]) square([material_thickness,box_height/7]);
}

/*--------------*/
/* Bottom plate */
/*--------------*/
module bottom()
{

//Basic shape
translate([material_thickness,material_thickness,0]) square([box_width,box_depth]);

//Notches
translate([material_thickness+box_width/5,0,0]) square([box_width/5,material_thickness]);
translate([material_thickness+3*box_width/5,0,0]) square([box_width/5,material_thickness]);
translate([material_thickness+box_width/5,material_thickness+box_depth,0]) square([box_width/5,material_thickness]);
translate([material_thickness+3*box_width/5,material_thickness+box_depth,0]) square([box_width/5,material_thickness]);

translate([0,material_thickness,0]) square([material_thickness,box_depth/3]);
translate([0,material_thickness+2*box_depth/3,0]) square([material_thickness,box_depth/3]);
translate([material_thickness+box_width,material_thickness,0]) square([material_thickness,box_depth/3]);
translate([material_thickness+box_width,material_thickness+2*box_depth/3,0]) square([material_thickness,box_depth/3]);
}
```


[User]
Hey, I'm looking to get a motor mount designed for a drone, and I want it to be parametric so I can adjust it easily. I've got some notes and a bit of old code that should help get us started.

The main thing is that it needs to attach a 28mm style motor (like the NTM Prop Drive Series 28) to a 10mm boom.  The motor has four mounting holes arranged in a square, and the dimensions I'm using are a 19mm hole distance across the diagonal, and 15.9mm hole spacing between adjacent holes. The mounting holes are for M3 screws, so I need those to be clearance holes. It will need countersunk screw holes. There needs to be a central hole for the motor shaft, of around 8mm diameter.

The boom attachment should be adaptable, supporting both square and circular booms of 10mm. The main body of the mount has a thickness of 3mm. I'm thinking of something that has a cylindrical base for the motor mounting and then a kind of a bracket that the boom fits into. It'll need a hole for a screw that tightens on the boom as well.

The old code I have is a bit of a mess, but it should have most of the relevant dimensions:
```
$fn = 32 * 1;

// width in mm
boom = 10.2;

boom_shape = 0;	// [0:square, 1:circular]

thickness = 3 * 1;
motor_r = 27.6 / 2;
motor_hole_r = 3 / 2;	// M3
motor_hole_dist_1 = 19 * 1;	// 3/4"?
motor_hole_dist_2 = 15.9 * 1;		// 5/8"?

rotate([ 0, 180, 0 ])
motor_mount_old();

module motor_mount_old()
{
	side = boom + 2 * thickness;

	// Motor mounting plate
	difference()
	{
		hull()
		{
			cylinder(r = motor_r, h = thickness);

			translate([-side / 2, motor_r, -thickness])
			cube([side, 5, thickness * 2]);
		}

		rotate([90, 0, 0])
		motor_mount_holes();
	}

	difference()
	{
		hull()
		{
			translate([-side / 2, motor_r + 5, -side + thickness])
			cube([side, 20, side]);

			translate([-side / 2, motor_r, -thickness])
			cube([side, 5, thickness * 2]);
		}

		// Hole for boom
		if (boom_shape == 0)
		{
			translate([-boom / 2, motor_r + 5, thickness - (side - boom) / 2 - boom])
			cube([boom, 25, boom]);
		}
		else
		{
			translate([0, motor_r + 5, thickness - (side - boom) / 2 - boom / 2])
			rotate([-90, 0, 0 ])
			cylinder(h = 25, r = boom / 2);
		}

		// Hole for arm screw
		translate([-side / 2 - 0.01, motor_r + 20, -boom / 2])
		rotate([90, 0, 90])
		cylinder(h = side + 0.02, r = 3.1 / 2);
	}
}

module motor_mount_holes()
{
	screw_cap_r = 4.75 / 2;
	spacer_r = 8 / 2;

	// Left
	translate([-motor_hole_dist_1 / 2, thickness + 0.01, 0])
	rotate([90, 0, 0])
	cylinder(h = thickness + 0.02, r = motor_hole_r * 1.1);

	translate([-motor_hole_dist_1 / 2, 1.01, 0])
	rotate([90, 0, 0])
	cylinder(h = 1.02, r1 = motor_hole_r * 1.1, r2 = screw_cap_r * 1.1);

	translate([-motor_hole_dist_1 / 2, 0, 0])
	rotate([90, 0, 0])
	cylinder(h = 5, r = screw_cap_r * 1.2);

	// Right
	translate([motor_hole_dist_1 / 2, thickness + 0.01, 0])
	rotate([90, 0, 0])
	cylinder(h = thickness + 0.02, r = motor_hole_r * 1.1);

	translate([motor_hole_dist_1 / 2, 1.01, 0])
	rotate([90, 0, 0])
	cylinder(h = 1.02, r1 = motor_hole_r * 1.1, r2 = screw_cap_r * 1.1);

	translate([motor_hole_dist_1 / 2, 0, 0])
	rotate([90, 0, 0])
	cylinder(h = 5, r = screw_cap_r * 1.2);

	// Bottom
	translate([0, thickness + 0.01, -motor_hole_dist_2 / 2])
	rotate([90, 0, 0])
	cylinder(h = thickness + 0.02, r = motor_hole_r * 1.1);

	translate([0, 1.01, -motor_hole_dist_2 / 2])
	rotate([90, 0, 0])
	cylinder(h = 1.02, r1 = motor_hole_r * 1.1, r2 = screw_cap_r * 1.1);

	translate([0, 0, -motor_hole_dist_2 / 2])
	rotate([90, 0, 0])
	cylinder(h = 5, r = screw_cap_r * 1.2);

	// Top
	translate([0, thickness + 0.01, motor_hole_dist_2 / 2])
	rotate([90, 0, 0])
	cylinder(h = thickness + 0.02, r = motor_hole_r * 1.1);

	translate([0, 1.01, motor_hole_dist_2 / 2])
	rotate([90, 0, 0])
	cylinder(h = 1.02, r1 = motor_hole_r * 1.1, r2 = screw_cap_r * 1.1);

	translate([0, 0, motor_hole_dist_2 / 2])
	rotate([90, 0, 0])
	cylinder(h = 5, r = screw_cap_r * 1.2);

	// Hole for shaft
	translate([0, thickness + 0.01, 0])
	rotate([90, 0, 0])
	cylinder(h = thickness * 2, r = spacer_r);
}
```
I think that's all the info.  I'd like the output in OpenSCAD, with the parameters exposed so I can change them in customizer. I'm not attached to any particular library, so go with whatever makes the most sense to you. Thanks!

[Assistant]
motor_mount.scad:
```
$fn = 32 * 1;

// width in mm
boom = 10.2;

boom_shape = 0;	// [0:square, 1:circular]

thickness = 3 * 1;
motor_r = 27.6 / 2;
motor_hole_r = 3 / 2;	// M3
motor_hole_dist_1 = 19 * 1;	// 3/4"?
motor_hole_dist_2 = 15.9 * 1;		// 5/8"?

rotate([ 0, 180, 0 ])
motor_mount_old();

module motor_mount_old()
{
	side = boom + 2 * thickness;

	// Motor mounting plate
	difference()
	{
		hull()
		{
			cylinder(r = motor_r, h = thickness);

			translate([-side / 2, motor_r, -thickness])
			cube([side, 5, thickness * 2]);
		}

		rotate([90, 0, 0])
		motor_mount_holes();
	}

	difference()
	{
		hull()
		{
			translate([-side / 2, motor_r + 5, -side + thickness])
			cube([side, 20, side]);

			translate([-side / 2, motor_r, -thickness])
			cube([side, 5, thickness * 2]);
		}

		// Hole for boom
		if (boom_shape == 0)
		{
			translate([-boom / 2, motor_r + 5, thickness - (side - boom) / 2 - boom])
			cube([boom, 25, boom]);
		}
		else
		{
			translate([0, motor_r + 5, thickness - (side - boom) / 2 - boom / 2])
			rotate([-90, 0, 0 ])
			cylinder(h = 25, r = boom / 2);
		}

		// Hole for arm screw
		translate([-side / 2 - 0.01, motor_r + 20, -boom / 2])
		rotate([90, 0, 90])
		cylinder(h = side + 0.02, r = 3.1 / 2);
	}
}

module motor_mount_holes()
{
	screw_cap_r = 4.75 / 2;
	spacer_r = 8 / 2;

	// Left
	translate([-motor_hole_dist_1 / 2, thickness + 0.01, 0])
	rotate([90, 0, 0])
	cylinder(h = thickness + 0.02, r = motor_hole_r * 1.1);

	translate([-motor_hole_dist_1 / 2, 1.01, 0])
	rotate([90, 0, 0])
	cylinder(h = 1.02, r1 = motor_hole_r * 1.1, r2 = screw_cap_r * 1.1);

	translate([-motor_hole_dist_1 / 2, 0, 0])
	rotate([90, 0, 0])
	cylinder(h = 5, r = screw_cap_r * 1.2);

	// Right
	translate([motor_hole_dist_1 / 2, thickness + 0.01, 0])
	rotate([90, 0, 0])
	cylinder(h = thickness + 0.02, r = motor_hole_r * 1.1);

	translate([motor_hole_dist_1 / 2, 1.01, 0])
	rotate([90, 0, 0])
	cylinder(h = 1.02, r1 = motor_hole_r * 1.1, r2 = screw_cap_r * 1.1);

	translate([motor_hole_dist_1 / 2, 0, 0])
	rotate([90, 0, 0])
	cylinder(h = 5, r = screw_cap_r * 1.2);

	// Bottom
	translate([0, thickness + 0.01, -motor_hole_dist_2 / 2])
	rotate([90, 0, 0])
	cylinder(h = thickness + 0.02, r = motor_hole_r * 1.1);

	translate([0, 1.01, -motor_hole_dist_2 / 2])
	rotate([90, 0, 0])
	cylinder(h = 1.02, r1 = motor_hole_r * 1.1, r2 = screw_cap_r * 1.1);

	translate([0, 0, -motor_hole_dist_2 / 2])
	rotate([90, 0, 0])
	cylinder(h = 5, r = screw_cap_r * 1.2);

	// Top
	translate([0, thickness + 0.01, motor_hole_dist_2 / 2])
	rotate([90, 0, 0])
	cylinder(h = thickness + 0.02, r = motor_hole_r * 1.1);

	translate([0, 1.01, motor_hole_dist_2 / 2])
	rotate([90, 0, 0])
	cylinder(h = 1.02, r1 = motor_hole_r * 1.1, r2 = screw_cap_r * 1.1);

	translate([0, 0, motor_hole_dist_2 / 2])
	rotate([90, 0, 0])
	cylinder(h = 5, r = screw_cap_r * 1.2);

	// Hole for shaft
	translate([0, thickness + 0.01, 0])
	rotate([90, 0, 0])
	cylinder(h = thickness * 2, r = spacer_r);
}

```


[User]
Hey, I'm looking for an OpenSCAD design for a customizable six-sided die. I've got some specific parameters I want to be able to tweak.

First, I need to control the radius of the little circles that make up the numbers on each face, and also the depth of those circles (how far they're indented). I'd like those to be named "circle_radius" and "digit_depth" respectively, and both should be easily adjustable.

Second, I need to control the overall size of the die. This should be the length of one side of the cube, excluding the rounding, and should be named "dice_size".

Third, I want to be able to adjust the amount of rounding on the edges of the die. Let's call that "rounding". I should be able to set it very low for a nearly perfectly sharp cube, or higher for more rounded edges.

Fourth, I want to be able to choose between a solid die and a hollow die. If it’s hollow, I need to be able to specify how hollow it should be as a percentage, maybe named “hollowness”.  So, a 0% hollowness would make it solid, and a 90% hollowness would be nearly empty. Please keep in mind that for practical strength, a hollowness of 80% or less would be ideal. I’m thinking of a string "dice_type" that will have the values "solid" or "hollow" to determine if it is solid or hollow.

Finally, I'd like the design to be efficient, so use $fn = 64 to smooth out the cylinder details.

Could you generate the .scad file for me?

[Assistant]
dice.scad:
```
/**
 *
 * Customizable Dice
 * Made by Dave de Fijter - 2013
 *
**/

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

/* [Global] */

// The radius of the 'digit' circles, 2x the radius is the diameter
circle_radius = 1;

// The depth of the 'digit' circles
digit_depth = 0.2;

// The extra rounding that's added to the sides of the dice, use 0.01 for no rounding
rounding = 2;

// The size of one side, excluding the rounding
dice_size = 13;

// Do you want a solid dice, or a more filament economic hollow one?
dice_type = "solid"; // [solid, hollow]

// If you pick the hollow version, how much % hollow should it be? 80% or lower is adviced to keep it strong enough
hollowness = 80; // [0:99]

/* [Hidden] */

$fn = 64;

wall_thickness = rounding;

if(dice_type == "hollow") {

	difference() {
		difference() {
			hull() {
				dice(6);
	}
			hull() {
				scale(hollowness/100)
				dice(6);
			}
		}
		dice(0);
	}
} else {
	difference() {
		hull() {
			dice(6);
		}
		dice(0);
	}
}

module dice(minus) {

	side(1-minus);
	rotate([90, 0, 0])
		translate([0, 0-dice_size / 2, dice_size/2])
			side(2-minus);
	rotate([-90, 0, 0])
		translate([0, dice_size / 2, dice_size/2])
			side(5-minus);
	rotate([0, 90, 0])
		translate([dice_size/2, 0, dice_size/2])
			side(4-minus);
	rotate([0, 180, 0])
		translate([0, 0, dice_size])
			side(6-minus);
	rotate([90, 0, 270])
		translate([0, 0-dice_size/2, dice_size/2])
			side(3-minus);
}

module side(digit) {
	if(digit < 1) {
		union() {
			cube([dice_size, dice_size, wall_thickness], center=true);

			rotate([90, 0, 0])
			translate([0-dice_size/2, 0, 0-dice_size/2])
			cylinder(r=wall_thickness/2, h=dice_size);

			rotate([90, 0, 90])
			translate([0-dice_size/2, 0, 0-dice_size/2])
			cylinder(r=wall_thickness/2, h=dice_size);
			rotate([90, 180, 0])
			translate([0-dice_size/2, 0, 0-dice_size/2])
			cylinder(r=wall_thickness/2, h=dice_size);

			rotate([90, 180, 90])
			translate([0-dice_size/2, 0, 0-dice_size/2])
			cylinder(r=wall_thickness/2, h=dice_size);

		}
	} else {
		translate([0, 0, (wall_thickness/2)-digit_depth])
			scale([1, 1, 1.1])
			number(digit);
	}

}

module number(digit) {
	/**
	 * This module creates the dots for a dice
	 * 1-6 is possible, other digits are not available
	 */
	offset = 3;

	if(digit == 1) {
		cylinder(r=circle_radius, h=digit_depth);
	}

	if(digit == 2) {
		translate([-circle_radius*offset, circle_radius*offset, 0])
			cylinder(r=circle_radius, h=digit_depth);
		translate([circle_radius*offset, -circle_radius*offset, 0])
			cylinder(r=circle_radius, h=digit_depth);
	}

	if(digit == 3) {
		number(1);
		translate([circle_radius*offset, circle_radius*offset, 0])
			cylinder(r=circle_radius, h=digit_depth);
		translate([-circle_radius*offset, -circle_radius*offset, 0])
			cylinder(r=circle_radius, h=digit_depth);
	}

	if(digit == 4) {
		number(2);
		translate([circle_radius*offset, circle_radius*offset, 0])
			cylinder(r=circle_radius, h=digit_depth);
		translate([-circle_radius*offset, -circle_radius*offset, 0])
			cylinder(r=circle_radius, h=digit_depth);
	}

	if(digit == 5) {
		number(4);
		number(1);
	}

	if(digit == 6) {
		number(4);
		translate([circle_radius*offset, 0, 0])
			cylinder(r=circle_radius, h=digit_depth);
		translate([-circle_radius*offset, 0, 0])
			cylinder(r=circle_radius, h=digit_depth);
	}

}
```


[User]
Hey, I'm looking to design a customizable pull string top, kind of like the one in the code I've attached, but I'd like to be able to adjust a bunch more parameters and have it be a little more robust. I want the design to be parametric in OpenSCAD.

The basic idea is this: there's a top part made of two main sections - a base and a stem, which get attached together. The base has a main cylindrical body, which is chamfered a bit, and it also has a ring around it. The stem sits on top of that base, and it's got a hole through it for the string. Then, there's a handle piece that you use to pull the string.

Here are the parameters I'm thinking of:

**General:**

*   `assembled`: A boolean (1 or 0) to show either the assembled top or the individual pieces.

**Base:**
*   `base_height`: Height of the base cylinder.
*   `base_dia`: Diameter of the base cylinder.
*  `base_facets`: Number of facets for the base cylinder.
*   `base_chamfer`: Amount of chamfer on the base cylinder.
*   `base_ring_dia`: Diameter of the ring around the base.
*   `base_ring_height`: Height of the ring around the base.

**Stem:**
*   `stem_height`: Height of the stem.
*   `stem_dia`: Diameter of the stem.
*   `stem_dia_tol`: Tolerance around the stem, for fitting into the base.
*   `stem_facets`: Number of facets for the stem cylinder.
*   `stem_hole_dia`: Diameter of the hole through the stem.
*   `stem_hole_offset`: Vertical offset of the stem hole from the bottom of the stem.

**Handle:**
*   `handle_length`: Length of the handle.
*   `handle_thick`: Thickness of the handle.
*  `handle_width`: Width of the handle.
*   `hole_edge`: Distance from the edge of the handle for the hole cutout.
*  `shaft_tol`: Tolerance around the shaft on the handle, for the stem.

I think I'd like the handle to have rounded ends. So a cylinder centered on the end would be a good addition. Also it'd be good if that cylinder could have the hole cutout in it, too.

I don't need any additional libraries for this, but I think we should make sure the tolerances are well defined so that the parts actually fit together.

Could you help me generate the OpenSCAD code for this? Let me know if you need anything clarified.

[Assistant]
Pull_String_Top.scad:
```
/*[top dimensions]*/
//Show assembled
assembled=1; //[1:yes, 0:no]
stem_height=40;
stem_dia=7.5;
stem_dia_tol=.75;
stem_facets=8;
stem_hole_dia=2.5;
stem_hole_offset=stem_height/2;

base_height=30;
base_dia=50;
base_facets=10;
base_chamfer=10;
base_ring_dia=50;
base_ring_height=10;

/*[handle dimensions]*/
handle_length=100;
handle_thick=stem_dia*2;
handle_width=20;
hole_edge=10;
shaft_tol=1;

top();
if(assembled==0)
translate([0,handle_width+base_dia/2+base_ring_dia/2,0])
handle();
if(assembled==1)
translate([-handle_length/2,0,stem_height/2])
	rotate([90,0,0])
		handle();

module top(){
	if (assembled==1){
		union(){
			rotate([180,0,0])
				base();
			translate([0,0,stem_height])
				rotate([180,0,0])
					stem();
		}
	}
	if(assembled==0){
		base();
		translate([base_ring_dia/2+base_dia/2+stem_dia,0,0])
			stem();

	}

}

module handle(){
	difference(){
		union(){
			cube([handle_length,handle_width,handle_thick],center=true);
			translate([handle_length/2,0,0])
				cylinder(r=stem_height/2,h=handle_thick,$fn=50,center=true);
		}
		translate([handle_length/2,0,0])
			cylinder(r=stem_height/2-hole_edge,h=handle_thick*1.1,$fn=50,center=true);
		translate([handle_length/2,0,0])
			rotate([90,0,0])
				cylinder(r=stem_dia/2+shaft_tol,h=stem_height*1.1,center=true,$fn=50);
		//for(i=[-handle_length/2
	}
}

module base(){
	difference(){
		union(){
			intersection(){
				cylinder(r1=base_dia/2,r2=0,h=base_height,$fn=base_facets);
				cylinder(r=base_dia/2-base_chamfer,h=base_height,$fn=base_facets);
			}
			cylinder(r=base_ring_dia/2,h=base_ring_height,$fn=base_facets);
		}
		cylinder(r=stem_dia/2+stem_dia_tol/2,h=base_height/2,$fn=stem_facets);
	}

}

module stem(){
	difference(){
		cylinder(r=stem_dia/2,h=stem_height+base_height/2,$fn=stem_facets);
		translate([0,0,stem_hole_offset])
			rotate([90,-20,0])
				cylinder(r=stem_hole_dia/2,h=stem_dia*1.5,$fn=5,center=true);
	}

}

```


[User]
I'm looking to design a customizable star ornament, and I'd like to use OpenSCAD to make it parametric. I'm envisioning a star that can be printed as a single piece, or potentially as two halves for easier printing. The core idea is to have a star with pointy "arms," and I want to be able to easily adjust the number of points, the length and width of those points, and their thickness. It should also be possible to control the overall thickness of the star if it's a single piece.

Additionally, I'd like to have options for adding a mounting post and/or a small hole for a thread for hanging. I'd like to control the post's diameter, number of sides, and even the option to not have it at all. Similarly, the thread hole should be an optional parameter that can be turned off or on.

I'm not super familiar with all the OpenSCAD libraries, but from looking at other examples, I think I might need a few features that are available in BOSL2. Specifically, BOSL2 has helpful features for parametric cylinders and other shapes, so I'd like to use that library if it's helpful.

Here's a breakdown of the features I need:

*   **Parametric Star:**
    *   Number of points (e.g., 5 for a classic star, but customizable).
    *   Length of each point.
    *   Width of each point at its base.
    *   Thickness of each point.
    *   Option for the entire star to have a base thickness, if it's not printed as two halves.

*   **Optional Mounting Post:**
    *   Enable/disable this feature.
    *   Diameter of the post.
    *   Number of sides for the post (e.g., 3 for a triangular post).

*   **Optional Thread Hole:**
    *   Enable/disable this feature.
    *   Hole diameter.
    *   Hole placement

*   **Print Options:**
    *   Option to create the star as a single piece.
    *   Option to create the star as two halves, with a clear separation between the two.

I'd like the design to be relatively simple and easy to understand, if that's possible. I'm planning on 3D printing these, so a nice solid design is key. I'm picturing the mounting post and the thread hole as cylinders.

[Assistant]
StarMaker.scad:
```
//StarMaker
//by Alex Tanchoco (LionAlex)
//December 9, 2013
//Originally designed for making Christmas tree ornaments but can be adopted for making all kinds of stars

star_points = 5;
star_thickness = 0;
point_length = 50;
point_width = 20;
point_thickness = 5;
point_points = 4;
post_diameter = 10;
post_sides = 3;
each_angle = 180/point_points;
mounting_post = true;
thread_hole = true;

difference() {
	intersection() {
		star();
		if( star_thickness>0 )
		cube( [point_length*3,point_length*3,star_thickness], center=true );
	}
	//mounting post
	if( mounting_post )
		translate( [-point_length*0.25,0,-post_diameter/2+2] )
			rotate( [0,90,0] )
				cylinder( h=point_length,r=post_diameter/2,$fn=post_sides, center = true );

	//thread hole
	if( thread_hole )
		translate( [point_length*0.75,0,0] )
			rotate( [90,0,0] )
				cylinder( h=point_length,r=1,$fn=16, center = true );
}

module star(star_scale=1) {
	scale( [star_scale,star_scale,star_scale] )
	for( i=[1:1:star_points] ) {
		rotate( [0,0,360/star_points * i] )
			translate( [point_length/2,0,0] )
				rotate( [0,90,0] )
				cylinder( h=point_length, r1=point_width, r2=0, $fn = point_points, center=true );
	}
}
```
StarMaker_flatface.scad:
```
//StarMaker
//by Alex Tanchoco (LionAlex)
//December 9, 2013
//Originally designed for making Christmas tree ornaments but can be adopted for making all kinds of stars

star_points = 5;
star_thickness = 20;
point_length = 50;
point_width = 20;
point_thickness = 5;
point_points = 4;
post_diameter = 10;
post_sides = 3;
each_angle = 180/point_points;
mounting_post = true;
thread_hole = true;

difference() {
	intersection() {
		star();
		if( star_thickness>0 )
		cube( [point_length*3,point_length*3,star_thickness], center=true );
	}
	//mounting post
	if( mounting_post )
		translate( [-point_length*0.25,0,-post_diameter/2+2] )
			rotate( [0,90,0] )
				cylinder( h=point_length,r=post_diameter/2,$fn=post_sides, center = true );

	//thread hole
	if( thread_hole )
		translate( [point_length*0.75,0,0] )
			rotate( [90,0,0] )
				cylinder( h=point_length,r=1,$fn=16, center = true );
}

module star(star_scale=1) {
	scale( [star_scale,star_scale,star_scale] )
	for( i=[1:1:star_points] ) {
		rotate( [0,0,360/star_points * i] )
			translate( [point_length/2,0,0] )
				rotate( [0,90,0] )
				cylinder( h=point_length, r1=point_width, r2=0, $fn = point_points, center=true );
	}
}
```
StarMakerHalves.scad:
```
//StarMaker Halves
//by Alex Tanchoco (LionAlex)
//December 10, 2013
//Originally designed for making Christmas tree ornaments but can be adopted for making all kinds of stars

star_points = 5;
star_thickness = 0;
point_length = 50;
point_width = 20;
point_thickness = 5;
point_points = 4;
post_diameter = 10;
post_sides = 3;
each_angle = 180/point_points;
mounting_post = true;
thread_hole = true;

translate( [-point_length,0,0] )
	top_half();
translate( [point_length,0,0] )
	bottom_half();

module top_half() {
	//top half
	difference() {
		fullstar();
		translate( [-point_length,-point_length,-point_length*2] )
			cube( [point_length*2,point_length*2,point_length*2,] );
	}

}

module bottom_half() {
	//bottom half
	difference() {
		rotate( [180,0,0] )
			fullstar();
		translate( [-point_length,-point_length,-point_length*2] )
			cube( [point_length*2,point_length*2,point_length*2,] );
	}
}

module fullstar() {
difference() {
	intersection() {
		star();
		if( star_thickness>0 )
		cube( [point_length*3,point_length*3,star_thickness], center=true );
	}
	//mounting post
	if( mounting_post )
		translate( [-point_length*0.25,0,-post_diameter/2+2] )
			rotate( [0,90,0] )
				cylinder( h=point_length,r=post_diameter/2,$fn=post_sides, center = true );

	//thread hole
	if( thread_hole )
		translate( [point_length*0.75,0,0] )
			rotate( [90,0,0] )
				cylinder( h=point_length,r=1,$fn=16, center = true );
}
}

module star(star_scale=1) {
	scale( [star_scale,star_scale,star_scale] )
	for( i=[1:1:star_points] ) {
		rotate( [0,0,360/star_points * i] )
			translate( [point_length/2,0,0] )
				rotate( [0,90,0] )
				cylinder( h=point_length, r1=point_width, r2=0, $fn = point_points, center=true );
	}
}
```


[User]
Hey, I'm looking to create a pill box with a sliding lid, and I'd like it to be parametric so I can easily adjust the dimensions later. I'd like it to have dividers inside for separate compartments, and a small catch mechanism to keep the lid closed.

Here's what I have in mind:

*   **Overall Box:** I'd like to control the width, depth, and height of the box. I'm thinking of having rounded corners, so I need to specify a corner radius.
*   **Dividers:** I need to be able to specify the number of dividers along both the X and Y axes, and also the wall thickness of those dividers.
*   **Walls:** The box and the lid need walls, and I need to set their thickness.
*   **Lid:** The lid should slide in, and should have a lip that goes inside the box to make it fit nicely. I'd need to specify the width of this lip and the snugness of the fit (so I can adjust how tight it slides).
*   **Catch:** I want a small catch that keeps the lid from sliding open unintentionally. I need to be able to specify its height, and it should be a small, rounded nub that fits into a slot on the lid.

I would prefer that you use the `MCAD` library for the box and rounded corners. Can you help me create a set of OpenSCAD files that can accomplish this?

[Assistant]
pill_box_v2.scad:
```
include <MCAD/boxes.scad>

//Pill box with sliding lid

/* [Outside Box Dimensions] */
//Box Width (min: 5 x Wall Thickness)
bX=24;
//Box Depth (min: 5 x Wall Thickness)
bY=42;
//Box Height (min: 5 x Wall Thickness)
bZ=12;
//Corner Radius (radius of the corner fillet inside and outside)
corner=2.5;
//X Dividers (0 for no dividers)
col=0;
//Y Dividers (0 for no dividers)
row=2;
//Divider Wall Thickness
divWall=1.5;

/* [Wall Thickness] */
//Wall Thickness (min: 2mm)
wall=2.8;

/* [Lid] */
//Lid Lip Width (min: 1mm)
lip=2;
//Snugness of Lid (values approaching 1.0 result in a snugger fit)
snug=.99;

/* [Catch] */
//Catch Height (height over the lip for the catch)
catch=1;

/* [Hidden] */
boxDim=[bX, bY, bZ];
over=.5; //amount to extend parts that need to have interference (such as dividers)
module xDiv(inSide){
  xInc=inSide[0]/col;
  for ( i = [1 : col-1] ) {
    translate([i*xInc, 0, 0])cube([divWall, inSide[1]+over, inSide[2]+over], center=true);
  }
}

module yDiv(inSide){
  yInc=inSide[1]/row;
  for (i = [1 : row-1] ) {
    translate([0, i*yInc, 0])cube([inSide[0]+over, divWall, inSide[2]+over], center=true);
  }
}

module drawBox () {
  innerBox=[bX-(2*wall), bY-(2*wall), bZ-(2*wall)+.22];
  echo("innerBox=", innerBox);
  union() {
    difference() {
      roundedBox(boxDim, corner, sidesonly=1, $fn=36);
      roundedBox(innerBox, corner, sidesonly=1, $fn=20);
      translate([0, -wall, bZ/2+.1]) cutLid(0);
    }
    translate([-innerBox[0]/2, 0, -over/2]) xDiv(innerBox);
    translate([0, -innerBox[1]/2, -over/2]) yDiv(innerBox);
  }
}

module cutLid(shorten, catch) {
  //Create a trapezoid lid

  insideLip=wall*1.2; //lip inside the box for the lid to rest upon
  lX=bX-(2*wall)+insideLip;
  lY=bY-shorten;

  echo("inside lip=", insideLip/2);

  //polygon points
  p0=[0, 0];
  p1=[lX, 0];
  p2=[lX-lip, wall];
  p3=[lip, wall];

  // this needs to be less than 45 deg to be usable
  echo("Lip Overhang (degrees)=", atan(lip/wall));

  difference() {
    rotate([90,0,0])
      translate([-lX/2, -wall, 0])
      linear_extrude(height=lY, center=true) polygon([p0, p1, p2, p3], paths=[[0,1,2,3]]);
    if (catch==1) {
      translate([0, lY/2-wall/2, -wall+catch/2]) cube([lX*.8, catch*1.5, catch*1.3], center=true);
      //Add an additional slot to make it easier to slide open the lid
      translate([0, -lY/2+wall, wall/3]) cube([lX*.6, catch*1.5, catch*5], center=true);
    } else {
      echo("catch=false");
    }

  }
}

module drawCatch() {
  rad=catch/2;
  lX=bX-2*(wall+.2);

  union() {
    translate([-lX/3, 0, 0]) sphere(r=rad, $fn=20);
    translate([ lX/3, 0, 0]) sphere(r=rad, $fn=20);
    rotate([0,90,0])cylinder(h=lX/1.5, r=rad, center=true, $fn=20);
  }
}

module assemble() {
    union() {
      drawBox();
      //move the catch to the front of the box
      translate([0, -(bY/2)+wall/2, bZ/2-wall]) drawCatch();
    }
  //draw the lid (wall, 1) - second paramater specifies to add a hole for a catch
  translate([bX+10, 0, (-bZ/2)]) rotate([180, 0, 0]) scale([snug-.01, snug-.02, snug]) cutLid(wall, 1);
}

assemble();

```


[User]
Hi, I'm looking to create a parametric OpenSCAD model for generating markers for an OptiTrack motion capture system. I've seen a few examples floating around, but I'd like something more flexible and customizable. The basic idea is to have a central stand with several marker "arms" extending out, each ending in a reflective sphere.

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

*   **Stand Dimensions:** I need to be able to adjust the width (x), length (y), and height (z) of the central stand.
*   **Marker Diameter:** The diameter of the reflective spheres.
*   **Number of Markers:** How many marker arms extend from the stand.
*   **Max Marker Distance:** The maximum distance from the center of the stand that a marker can be located.
*   **Marker ID (Seed):** A seed value that will allow me to generate different, randomized marker positions using the same parameters. This should make it so that identical seed values will produce the same randomized pattern when the parameters are the same.

Each marker should consist of a cylinder (the "arm") extending from the stand, with a sphere attached at its end.  The position of each marker (both the direction and the length of the arm) should be randomized to some extent, using the marker id as the seed so that the marker pattern can be repeated with the same parameters. The markers should start from the top of the stand.

I'm not too picky about the exact distribution of marker positions, so long as they are randomized with an appropriate seed and the distance of the markers from the center of the stand are less than the maximum marker distance. The marker arms should be positioned using randomized rotations on all axes. It should also generate the markers so that none of them are inside the central stand.

I'm comfortable using basic OpenSCAD, so I don't need anything too fancy. I'm not using any special libraries, so I think just regular OpenSCAD functionality should suffice.

Could you create a set of OpenSCAD files for me that will accomplish this, please?

[Assistant]
OptiTrack_Marker.scad:
```
//	Custom OptiTrack Marker Generator
// (c) James Walsh - james.walsh@setoreaustralia.com
// Original concept and prototype by Bruce Thomas (http://www.unisanet.unisa.edu.au/Staff/Homepage.asp?Name=Bruce.Thomas)

//CUSTOMIZER VARIABLES

//	Stand Width (X) (mm)
x_measurement = 10;

//	Stand Width (Y) (mm)
y_measurement = 10;

//	Stand Height (mm)
z_measurement = 10;

//	Marker Diameter (mm)
diameter = 10;	//	[5:40]

//	Number of Markers
marker_count = 5;	//	[1:5]

//	Max Marker Distance from Center
max_length = 7;	//	[5:15]

//Marker ID (Random Seed to Generate Marker)
seed = 150; // [0 : 300]

//CUSTOMIZER VARIABLES END

//core stand
translate([0,0,z_measurement/2]) cube([x_measurement, y_measurement, z_measurement], center=true);

//random marker offsets
rotX = rands(0, 180, marker_count, seed);
rotY = rands(0, 180, marker_count, seed);
rotZ = rands(0, 360, marker_count, seed);
lengthR = rands(diameter * 2, max(diameter * 5, max_length), marker_count, seed);

//draw the markers
for (i = [0 : marker_count])
{
	markerOnAStick(rotX[i] - 90, rotY[i] + 90, rotZ[i], lengthR[i], diameter);
}

module markerOnAStick(rotX, rotY, rotZ, length, diameter)
{
	rotate(rotX, [1, 0, 0])
	{
		rotate(rotY, [0, 1, 0])
		{
			rotate(0 , [0, 0, 1])
			{
				cylinder(length, diameter / 4);
				translate([0,0,length])
				{
					sphere(diameter / 2);
				}
			}
		}
	}
}
```