[User]
I'd like to create a customizable pen holder, but it should be able to hold other things like files or screwdrivers too. I think a cylinder with a series of holes around the perimeter would work, with the holes being sized to hold those types of objects.

Here's what I'm picturing:

*   **Basic Shape:** A cylinder forms the main body of the holder.
*   **Holes:** There should be multiple holes arranged evenly around the circumference of the cylinder.
*   **Customizable Parameters:**
    *   Number of holes (let's start with 6 as default).
    *   Overall height of the holder (default to 60 mm).
    *   Thickness of the walls between the holes and the outer wall of the cylinder (default to 2 mm).
    *   Radius of the holes (default to 10 mm).
    *   "Mode" of the holes - this is a bit more complex. I'd like to have three different modes:
        *   **"Normal":** The holes are cylindrical and stop before the bottom of the cylinder. I want a decorative area of the cylinder to be shown at the bottom (around 0.6 times the height).
        *   **"Inverse":** Similar to normal, but the decorative part is at the top of the cylinder.
        *    **"Through":** The holes go all the way through the bottom of the cylinder.
*   **Decoration:** I like how the existing code adds a decorative bottom section. I'd like that to remain part of the design. The ratio for this section is based on the golden ratio (0.618). It should be controlled by a parameter.

I'm not sure how best to implement this in OpenSCAD, but it seems like the existing code is using math to compute the outer radius of the cylinder based on the hole radius and wall thickness. Could we keep that part, while ensuring that it's fully parameterized?

Could you generate the OpenSCAD code for this? I don't need any external libraries right now.

[Assistant]
penHolder.scad:
```
//number of holes
n=6;
//Total height
totalHeight=60;
H=totalHeight;
//wall thickness (between holes, and hole exterior)
wall=2;
//Radius of holes
holeRadius = 10;
ir=holeRadius;

//where the holes should be
mode="normal";//[normal,inverse,through]
//ratio of decoration high over total high
decorationRatio=0.61803398875;

module bullet(w,h){
    union(){
        cylinder(r=w/2,h=h-w/2);
        translate([0,0,h-w/2]) sphere(r=w/2);
    }
}

function outerR(R,r) = sqrt(pow(R-sqrt(pow(R-r,2)-r*r),2)+r*r)-r;
Ra=2/(1-pow(tan((PI/4-PI/(2*n))*(180/PI)),2));
R=(Ra*(ir+wall/2))+wall/2;

or=outerR(R,ir)+wall/2;
oh=H * decorationRatio;

module barrel(){
difference(){
    cylinder(r=R,h=H);
    for (i =[ 0:n-1])
        rotate([180,0,i*360/n])translate([R,0,-H-1])bullet(or*2,oh+1);
}
}

if (mode=="normal"){
    difference(){
        barrel();
        for (i =[ 0:n-1])
            rotate([180,0,i*360/n+180/n])translate([R-ir-wall,0,-H-wall])bullet(ir*2,H);
    }
}
if (mode=="inverse"){
    difference(){
        barrel();
        for (i =[ 0:n-1])
            rotate([0,0,i*360/n+180/n])translate([R-ir-wall,0,-wall])bullet(ir*2,H);
    }
}

if (mode=="through"){
    difference(){
        barrel();
        for (i =[ 0:n-1])
            rotate([0,0,i*360/n+180/n])translate([R-ir-wall,0,-wall])bullet(ir*2,H*2);
    }
}

```


[User]
I need a parametric OpenSCAD design for a print bed calibrator. The basic idea is a grid of rings, connected by thin bars. Here's what I'm looking for:

**General Layout**

*   The calibrator should be rectangular. I need to be able to set the length and width as parameters.
*   I need to specify the overall height of the object, probably something like 5mm.
*   The rings will be arranged in a grid pattern, evenly spaced across the length and width of the rectangle. I need parameters to control the number of rings along the length and the number of rings along the width. Let's call these `num_rings_x` and `num_rings_y`.
*   The rings should be connected together with thin rectangles - "connectors".

**Ring Details**

*   Each ring should be a cylinder with a hole in the middle. I'll need parameters for the outer radius (`outer_radius`) and inner radius (`inner_radius`) of the ring.
*   The resolution of the cylinders can be controlled by a `resolution` parameter (the `$fn` parameter in OpenSCAD)

**Connector Details**

*   I'll need a parameter for the width of the rectangular connectors, `connector_width`.
*   The connectors should be the same height as the rings.
*   At the edges of the grid, I need the connectors to go halfway to the edge of the bounding rectangle - basically just like how you would naturally connect rings on a grid.

**Parametric Control**

*   I need to be able to set all of these parameters, and the object should adjust accordingly.

This is my first time creating a complicated design in OpenSCAD, so hopefully it’s not too much to ask. Thanks in advance for your help!

[Assistant]
calibrator.scad:
```
// title: Customizable Printbed Calibrator
// author: Ben Zhang
// license: Creative Commons CC BY-SA 3.0
// URL: http://www.thingiverse.com/thing:693083
// Repository: https://github.com/ben-z/Customizable-Printbed-Calibrator
// revision: 0.1
// tags: Calibration, Customizable, OpenSCAD

/* [General] */

// The length of the object (mm) ex: 150mm for a 200mm printbed [Default: 150]
length = 150;

// The width of the object (mm) ex: 150mm for a 200mm printbed [Default: 150]
width = 150;

// The height of the object (mm) [Default: 5]
height = 5;

// # of rings on the length(x) (mm, >=3) [Default: 5]
num_rings_x = 5;

// # of rings on the width(y) (mm, >=3) [Default: 5]
num_rings_y = 5;

/* [Ring] */

// The outer radius of the ring (mm) [Default: 10]
outer_radius = 10;

// The outer radius of the ring (mm) [Default: 6]
inner_radius = 6;

// Resolution of the ring (mm) [Default: 50]
resolution = 50; // [10:150]

/* [Connector] */

// The width of connectors (mm), 0 for empty space [Default: 3]
connector_width = 3;

/* [Hidden] */

module ring(r1, r2, h, quality) {
	//cylinder(r = r1, h = h, $fn=quality, center = true);
    difference() {
        cylinder(r = r1, h = h, $fn=quality, center = true);
        translate([ 0, 0, -1 ]) cylinder(r = r2, h = h+2, $fn=quality, center = true);
    }
}

// ring(outer_radius, inner_radius, height, resolution);

module connector(size,properties) {
	difference() {
		cube(size=size,center=true);
		cylinder(r=properties[0],h=properties[1],$fn=properties[2],center=true);
	}

}

module corner_connector(size,shift,properties){
	difference() {
		translate(shift)
			cube(size=size,center=true);
		cylinder(r=properties[0],h=properties[1],$fn=properties[2],center=true);
	}
}

module print_part() {
	corner_length = length / 2;
	corner_width = width /2;
	ring_gap_length = length / (num_rings_x-1);
	ring_gap_width = width / (num_rings_y-1);

	for(i = [0:num_rings_x-1]){
			translate([corner_length-i*ring_gap_length,corner_width,0]){
				ring(outer_radius, inner_radius, height, resolution);
				if(i!=0 && i!=num_rings_x-1){
					// Add connector
					connector(size=[ring_gap_length,connector_width,height],
							properties=[outer_radius,height,resolution]);
				}else if(i==0){
					corner_connector(size=[ring_gap_length / 2,connector_width,height],
							shift=[-(ring_gap_length / 2 / 2),0,0],
							properties=[outer_radius,height,resolution]);
				}else if(i==num_rings_x-1){
					corner_connector(size=[ring_gap_length / 2,connector_width,height],
							shift=[(ring_gap_length / 2 / 2),0,0],
							properties=[outer_radius,height,resolution]);
				}
			}
			translate([corner_length-i*ring_gap_length,-corner_width,0]){
				ring(outer_radius, inner_radius, height, resolution);
				if(i!=0 && i!=num_rings_x-1){
					// Add connector
					connector(size=[ring_gap_length,connector_width,height],
							properties=[outer_radius,height,resolution]);
				}else if(i==0){
					corner_connector(size=[ring_gap_length / 2,connector_width,height],
							shift=[-(ring_gap_length / 2 / 2),0,0],
							properties=[outer_radius,height,resolution]);
				}else if(i==num_rings_x-1){
					corner_connector(size=[ring_gap_length / 2,connector_width,height],
							shift=[(ring_gap_length / 2 / 2),0,0],
							properties=[outer_radius,height,resolution]);
				}
			}
	}

	for(i=[0:num_rings_y-1]){
			translate([corner_length, corner_width - i * ring_gap_width,0]){
				ring(outer_radius, inner_radius, height, resolution);
				if(i!=0 && i!=num_rings_y-1){
					// Add connector
					connector(size=[connector_width,ring_gap_width,height],
							properties=[outer_radius,height,resolution]);
				}else if(i==0){
					corner_connector(size=[connector_width,ring_gap_width / 2,height],
							shift=[0,-(ring_gap_width / 2 / 2),0],
							properties=[outer_radius,height,resolution]);
				}else if(i==num_rings_y-1){
					corner_connector(size=[connector_width,ring_gap_width / 2,height],
							shift=[0,(ring_gap_width / 2 / 2),0],
							properties=[outer_radius,height,resolution]);
				}
			}
			translate([-corner_length, corner_width - i * ring_gap_width,0]){
				ring(outer_radius, inner_radius, height, resolution);
				if(i!=0 && i!=num_rings_y-1){
					// Add connector
					connector(size=[connector_width,ring_gap_width,height],
							properties=[outer_radius,height,resolution]);
				}else if(i==0){
					corner_connector(size=[connector_width,ring_gap_width / 2,height],
							shift=[0,-(ring_gap_width / 2 / 2),0],
							properties=[outer_radius,height,resolution]);
				}else if(i==num_rings_y-1){
					corner_connector(size=[connector_width,ring_gap_width / 2,height],
							shift=[0,(ring_gap_width / 2 / 2),0],
							properties=[outer_radius,height,resolution]);
				}
			}
	}
}

print_part();

```


[User]
I'd like a custom key chain, shaped like a heart with some text on it. I want to be able to change the text, the font, and the size of the heart.

Here's what I'm thinking:

The base of the keychain should be a rounded rectangular plate. On top of that, there's a larger heart outline, a smaller heart outline, and the text. I'd like to control the thickness of the base plate, the outline of the base plate, the big and small heart outlines, and also the text. Also, I want the outlines to be slightly raised above the main parts. I want it to be parametric so I can change the heart sizes, their relative position, their outline thicknesses, and the level at which they are raised. I'd like to be able to define the text and its alignment (left, center, or right). The text should also be raised above the main plate. I need the ability to set the text height and letter spacing, too.

I'd also like the option to add a small lug with a hole for the keychain ring. This should also be parametric, in that I can turn the lug on and off, and control its diameter and the diameter of the hole in the lug. I would like the lug to have a small support block so it's not just a cylinder.

I'd like to be able to specify different 'levels' for all the parts, which I intend to use with multi-color printing. The levels for the base plate, the base plate outline, the large heart outline, the small heart outline, and the text should all be controllable.

I need to be able to specify the font I want to use. I would like you to use the `write/Write.scad` library for this.

Could you generate the necessary OpenSCAD files? I think I'll need at least one main file to pull everything together, and the `write/Write.scad` library to handle the text. The heart shape should be generated mathematically, not using a pre-made polygon.

[Assistant]
words_from_the_heart_key_chain_V1_1.scad:
```

// 'Words from the Heart Key Chain' by wstein
// is licensed under the Attribution - Non-Commercial - Share Alike license.
// Version 1.1 (c) February 2015
// please refer the complete license here: http://creativecommons.org/licenses/by-nc-sa/3.0/legalcoe

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

/* [Text] */
line1 = "Enter Text";
line2 = "Here!";
alignment = 0; //[0: left, 1: center, 2: right]

/* [Appearance] */
//set to false if no lug is desired
build_lug=1; // [0:false, 1:true]
hole_diameter=4.0;

base_plate_rounding = 2;
base_plate_outline_1 = 1.0;
base_plate_outline_2 = 1.0;

// of heart
outline_width = 3;
heart_fringe = 1.0;

/* [Font] */

text_font = "knewave.dxf"; //[orbitron.dxf,Letters.dxf,knewave.dxf,BlackRose.dxf]
text_height = 8;
//corrects the kerning - depends on font
text_space_factor = 0.75;
line_space_factor = 1.05;

/* [Output] */
lug_level=2.0;

base_plate_level = 1.0; // white

base_plate_outline_1_level = 1.5;

base_plate_outline_2_level = 2.0;

// height of big heart
big_heart_level = 1.0; // white

// height of big heart outline
big_heart_outline_level = 1.5; // red

// height of small heart
small_heart_level = 1.5; // red

// height of small heart outline
small_heart_outline_level = 2.0; // black

// height of words
text_level = 2.0; // black

/* [Hidden] */

big_heart_size = 70.0;
big_heart_x = 70.0;
big_heart_y = 70.0;

small_heart_size = 35.0;
small_heart_pos = [6, -7];

text = [line1, line2];

//big_heart_size = 12;
//small_heart_size = 8;

char_width = 11 / 16 * text_height * text_space_factor; // this is the formular write.scad internal uses
line_start = [-3, 18];

max_line_len = max(len(text[0])+line_start[0]/char_width,len(text[1])+line_start[1]/char_width);
line_width = max_line_len * char_width;
max_level = max(base_plate_level, big_heart_level, big_heart_outline_level, small_heart_level, small_heart_outline_level, text_level = 2.0);

lug_diameter=hole_diameter+2*lug_level;

use <write/Write.scad>

$fn = 50; // only relevant for neodym holes[ 2.45, -148.21, 52.02 ]

// http://en.wikipedia.org/wiki/File:GJL-fft-herz.svg
function get_heart_x(t) = 12 * sin(t) - 4 * sin(3 * t);
function get_heart_y(t) = 13 * cos(t) - 5 * cos(2 * t) - 2 * cos(3 * t) - cos(4 * t);

function get_link_length(str) = char_width * (len(str) - 0.3);

//Ok, lets start building by calling process_word()...
words_from_the_heart();

// builds an outlined heart
module outline_heart(height, width, outline_width, outline_level, depth,col1,col2)
union()
{
	difference()
	{
		color(col2)
		heart(height, width, outline_level);

		heart(height-2*outline_width, width-2*outline_width, outline_level+.1);
	}

	color(col1)
	heart(height-2*outline_width, width-2*outline_width, depth);

	color("white")
	build_heart_fringe(height, width, base_plate_level);
}

// builds a simple heart
module heart(height, width, depth)
scale([height/90, width/90, 1])
linear_extrude(height=depth,convexity=10)
assign(step=5)
for(a=[0:step:360])
polygon(points=[[0,0],[get_heart_x(a),get_heart_y(a)],[get_heart_x(a+step),get_heart_y(a+step)]]);

// builds a fringe of heart
module build_heart_fringe(height, width, depth)
linear_extrude(height=depth,convexity=10)
assign(step=5)
for(a=[0:step:360])
hull()
{
	translate([get_heart_x(a)*height/90, width/90*get_heart_y(a)])
	circle(r=heart_fringe);

	translate([get_heart_x(a+step)*height/90, width/90*get_heart_y(a+step)])
	circle(r=heart_fringe);

	circle(r=heart_fringe);
}

// builds a doubled heart
// builds the tagged heart sticker
module words_from_the_heart()
translate([-5,-1.2,0])
union()
{
	difference()
	{
		translate([5,1.2,0])
		union()
		{
			difference()
			{
				outline_heart(big_heart_size, big_heart_size, 1.6*outline_width,big_heart_outline_level,big_heart_level,"white","red");

				translate(small_heart_pos)
				build_heart_fringe(small_heart_size, small_heart_size,max_level+.1);
			}

			translate(small_heart_pos)
			outline_heart(small_heart_size, small_heart_size,outline_width,small_heart_outline_level,small_heart_level,"red","black");
		}

		for(line_no=[0:len(text)-1])
		build_text();
	}

	color("black")
	build_text();

	difference()
	{
		union()
		{
			if(build_lug)
			translate([-base_plate_rounding + char_width * 0.4, 1.2 * line_space_factor * text_height - base_plate_rounding])
			build_lug();

			color("red")
			build_frame(base_plate_outline_2+base_plate_outline_1, base_plate_outline_1_level);

			color("black")
			build_frame(base_plate_outline_2, base_plate_outline_2_level);
		}

		build_plate(0, lug_level+.1);

		translate([5,1.2,0])
		union()
		{
			build_heart_fringe(big_heart_size,big_heart_size,max_level+.1);

			translate(small_heart_pos)
			build_heart_fringe(small_heart_size, small_heart_size,max_level+.1);
		}
	}

	color("white")
	build_plate(0, base_plate_level);
}

module build_frame(outline, level)
difference()
{
	build_plate(-outline, level);

	build_plate(0, level + .1);

	translate([5,1.2,0])
	build_heart_fringe(big_heart_size,big_heart_size,max_level+.1);
}

module build_text()
for(line_no=[0:len(text)-1])
assign(line=text[line_no])
assign(start=line_start[line_no] / char_width)
translate([start * char_width + (max_line_len - start - len(line)) * char_width * alignment / 2, -line_no * text_height * line_space_factor,0])
write(line, h=text_height, t=text_level, font=text_font, center=false, space=text_space_factor);

module build_plate(offset, level)
linear_extrude(height=level,convexity=10)
hull()
for(x=[base_plate_rounding - char_width * 0.4, max_line_len * char_width - base_plate_rounding + char_width * 0.7],y=[-1.15 * line_space_factor * text_height + base_plate_rounding, 1.1 * line_space_factor * text_height - base_plate_rounding])
translate([x, y - 1, 0])
circle(r=base_plate_rounding-offset, $fn=20);

module build_lug()
translate([-lug_diameter/2,lug_diameter/2,0])
difference()
{
	color("black")
	union()
	{
		cylinder(r=lug_diameter/2,h=lug_level, $fn=25);

		rotate([0,0,-45])
		translate([0,-lug_diameter/2,0])
		cube([lug_diameter,lug_diameter,lug_level]);
	}

	translate([0,0,-.1])
	cylinder(r=hole_diameter/2,h=lug_level+.2, $fn=25);
}

```


[User]
I'd like to design a modular chandelier system using OpenSCAD. The idea is to have a central component that houses the light socket and from which arms can extend to hold additional lights or decorative elements.

The core component should accommodate a standard E14 light socket. I'm thinking of a cylindrical base, wider at the bottom and tapering slightly towards the top to fit a standard E14 socket's slightly-wider top. The bottom diameter should be adjustable, say from 33 to 50mm, and the top diameter from 34 to 60mm. The height of this socket-holding part should be parametric, lets start with 30-100mm, and I also want to be able to adjust the thickness of the walls.

On top of this base, I need a shade/cover, with adjustable diameter from 50 to 100mm, and height between 50 and 100mm.

The socket-holding part will need screw holes for assembly and also for securing the wires. These screw holes will need to be parametric, with adjustable spacing, radius and type A or B.

Also, the design should include a way to attach a rod or a pipe to the center of the base. This rod or pipe will be used to hold the chandelier together. The diameter of this central rod should also be adjustable. I think it should be between 6 and 12mm.

I also want to be able to modify the bottom part of the socket base to include a box like structure where we can have a flat bottom, where the box width should be from 6-10, and box height should be between 2-3 mm.

I was thinking of starting with three main components:

1.  **A central socket holder:** This part will be the main cylinder with the screw holes, the base, and the central rod attachment.
2.  **A side socket holder:** this part will be similar to the socket holder but will have an additional part where a rod can be inserted from the side, and this would be the same as the central rod, but only going a little bit from the side.
3.  **The shade:** The top shade/cover which will be attached to the socket holder.

I would like to be able to specify which one of the three I want to render via a `what` parameter that can take values 0,1 and 2. Where 0 means to render the center holder, 1 the side holder and 2 the shade.

All units should be in millimeters.

Could you help me with the OpenSCAD code for this?

I would like to use the `MCAD` library.

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

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

// What should be rendered
what			    = 2;		// [0:Center holder,1:Side holder,2:Lamp shade]

// Diameter of the bottom part from down to up
// Standard E14 socket is slightly wider on it's top

Bottom_Diameter    = 33.4;	// [33:50]
Top_Diameter       = 34.3;	// [34:60]

// Diameter of the top part (shading), the end edge is the outer limit
Added_Diameter     = 55;	     // [50:100]

// Height of the socket's part
Cylinder_Height    = 30;		// [30:100]

// Height of the shade part
Added_Height       = 70;		// [50:100]

// Height of the screws which will be cut from the bottom part
Screws_Height      = 12;		// [12:20]

// The thickness of the cylinder walls
Wall_Thickness     =  1.75;   // [1.75:thin,3:thick]

/* [Screws] */

// There are two types of screws.
// A is the screw which holds holder and shading part together.
// B is the screw which holds the wires.

Screw_Spacing      = 19;	      // [15:25]
A_Screw_Radius     =  1.75;    // [1.5:thin,2:thick]
B_Screw_Radius     =  2.25;    // [2.25:thin:3:thick]

/* [Box parameters] */

// This is the box on the top of the socket
Box_Width          =  8;  // [6:10]
Box_Height         =  2;  // [2:3]
Bottom_Thickness   =  1;  // [1:3]

/* [Rod] */

// Diameter of the rod which goes through the upper part
Rod_Diameter       =  8.1; // [6:12]

/* [Hidden] */

Cylinder_Thickness = Wall_Thickness * 2;
Screw_Center       =  5 - 2*A_Screw_Radius;
fudge              =  0.01;

module bigger_elipse_hole() {
  union() {
    translate([0, Bottom_Diameter / -2.5, - Screws_Height]) linear_extrude(height = Screws_Height * 2 - B_Screw_Radius) hull() {
      translate([0, Bottom_Diameter / -2, 0]) circle(r = B_Screw_Radius, $fn = 72);
      translate([0, Bottom_Diameter / 2, 0]) circle(r = B_Screw_Radius, $fn = 72);
    }
    translate([0, Bottom_Diameter / 3, Screws_Height - B_Screw_Radius]) rotate([90, 0, 0]) cylinder(r = B_Screw_Radius, h = Bottom_Diameter, $fn = 72);
  }
}

module inner_plain_bottom_with_holes() {
  inner_fn = 72;
  difference() {
    cylinder(r1 = (Bottom_Diameter + Cylinder_Thickness) / 2, r2 = Bottom_Diameter / 2, h = Cylinder_Height / 2, $fn = inner_fn);
    translate([0, 0, Wall_Thickness])
      cylinder(r   = Bottom_Diameter / 2 - Cylinder_Thickness,
               h   = Cylinder_Height / 2 + fudge,
               $fn = inner_fn);

    translate([0, Screw_Spacing / -2, Cylinder_Height / 2 + Wall_Thickness])
      screw_elipse_hole();
    translate([0, Screw_Spacing / 2, Cylinder_Height / 2 + Wall_Thickness])
      screw_elipse_hole();

    translate([0, Screw_Spacing / -2, -fudge]) screw_elipse_hole();
    translate([0, Screw_Spacing / 2, -fudge]) screw_elipse_hole();

    rotate([0, 0, 90]) {
      translate([0, Screw_Spacing / -2, -fudge]) rotate([0, 0, -90]) scale([2, 3, 1]) screw_elipse_hole();
      translate([0, Screw_Spacing / 2, -fudge]) rotate([0, 0, -90]) scale([2, 3, 1]) screw_elipse_hole();
    }
  }
}

module inner_plain_cylinder() {
  inner_fn = 72;
  difference() {
    cylinder(r1 = (Bottom_Diameter + Cylinder_Thickness) / 2, r2 = (Top_Diameter + Cylinder_Thickness) / 2, h = Cylinder_Height, $fn = inner_fn);
    translate([0, 0, fudge / -2])
      cylinder(r1 = Bottom_Diameter / 2, r2 = Top_Diameter / 2, h = Cylinder_Height + fudge, $fn = inner_fn);
  }
}

module inner_cylinder() {
  difference() {
    inner_plain_cylinder();

    rotate([0, 0, -90]) {
      translate([0, Screw_Spacing / -2, 0]) rotate([0, 0, 90]) bigger_elipse_hole();
      translate([0, Screw_Spacing / 2, 0])  rotate([0, 0, 90]) bigger_elipse_hole();
    }

  }
}

module outer_cylinder() {
  outer_fn = 72;
  translate([0, 0, Cylinder_Height - fudge])
    difference() {
      cylinder(r1  = (Top_Diameter + Cylinder_Thickness) / 2,
               r2  = (Added_Diameter + Cylinder_Thickness) / 2,
               h   = Added_Height + fudge,
               $fn = outer_fn);
      translate([0, 0, fudge / -2])
        cylinder(r1  = Top_Diameter / 2,
                 r2  = Added_Diameter / 2,
                 h   = Added_Height + 2 * fudge,
                 $fn = outer_fn);
    }
}

module screw_elipse_hole() {
  translate([0, 0, Cylinder_Height / -2]) linear_extrude(height = Cylinder_Height) hull() {
    translate([0, Screw_Center / -2, 0]) circle(r = A_Screw_Radius, $fn = 72);
    translate([0, Screw_Center / 2, 0]) circle(r = A_Screw_Radius, $fn = 72);
  }
}

module inner_cylinder_bottom() {
  cylinder(r = (Bottom_Diameter + Cylinder_Thickness) / 2, h = Bottom_Thickness, $fn = 72);
  translate([0, 0, Bottom_Thickness - fudge])
    intersection() {
      cylinder(r = (Bottom_Diameter + Cylinder_Thickness) / 2, h = Box_Height + fudge, $fn = 72);
	 translate([Box_Width / -2, - Bottom_Diameter, 0])
        cube([Box_Width, Bottom_Diameter * 2, Box_Height + fudge]);
    }
}

module inner_cylinder_bottom_with_holes() {
  difference() {
    inner_cylinder_bottom();
    translate([0, Screw_Spacing / -2, 0]) screw_elipse_hole();
    translate([0, Screw_Spacing / 2, 0]) screw_elipse_hole();

    rotate([0, 0, -90]) {
      translate([0, Screw_Spacing / -2, 0]) rotate([0, 0, 90]) bigger_elipse_hole();
      translate([0, Screw_Spacing / 2, 0])  rotate([0, 0, 90]) bigger_elipse_hole();
    }

  }
}

module inner_plain_with_tycka(tycka_type = 1) {
  inner_fn = 72;
  cube_xy  = Screw_Spacing / 2 - 2 * A_Screw_Radius + fudge;
  cube_hl  = cube_xy - 2 * A_Screw_Radius;
  difference() {
    rotate([0, 0, 90]) union() {
      inner_plain_bottom_with_holes();
      translate([- cube_xy, - cube_xy, 0])
        cube([2 * cube_xy, 2 * cube_xy, Cylinder_Height / 3 + Cylinder_Thickness]);

      translate([- cube_xy, - Bottom_Diameter / 2 + Cylinder_Thickness, 0])
        difference() {
          cube([cube_hl, Bottom_Diameter - 2 * Cylinder_Thickness, Cylinder_Height / 2 - fudge]);
          translate([-fudge, Bottom_Diameter / 2 - 2 * cube_xy, cube_xy]) hull() {
            rotate([0, 90, 0]) cylinder(r = 1, h = cube_hl + 2 * fudge, $fn = inner_fn);
            translate([0, 0, Cylinder_Height / 2])
              rotate([0, 90, 0])
                cylinder(r = 3, h = cube_hl + 2 * fudge, $fn = inner_fn);
          }
          translate([-fudge, Bottom_Diameter - 2 * cube_xy, cube_xy]) hull() {
            rotate([0, 90, 0]) cylinder(r = 1, h = cube_hl + 2 * fudge, $fn = inner_fn);
            translate([0, 0, Cylinder_Height / 2])
              rotate([0, 90, 0])
                cylinder(r = 3, h = cube_hl + 2 * fudge, $fn = inner_fn);
          }
        }
      translate([cube_xy - cube_hl, - Bottom_Diameter / 2 + Cylinder_Thickness, 0])
        difference() {
          cube([cube_hl, Bottom_Diameter - 2 * Cylinder_Thickness, Cylinder_Height / 2 - fudge]);
          translate([-fudge, Bottom_Diameter / 2 - 2 * cube_xy, cube_xy]) hull() {
            rotate([0, 90, 0]) cylinder(r = 1, h = cube_hl + 2 * fudge, $fn = inner_fn);
            translate([0, 0, Cylinder_Height / 2])
              rotate([0, 90, 0])
                cylinder(r = 3, h = cube_hl + 2 * fudge, $fn = inner_fn);
          }
          translate([-fudge, Bottom_Diameter - 2 * cube_xy, cube_xy]) hull() {
            rotate([0, 90, 0]) cylinder(r = 1, h = cube_hl + 2 * fudge, $fn = inner_fn);
            translate([0, 0, Cylinder_Height / 2])
              rotate([0, 90, 0])
                cylinder(r = 3, h = cube_hl + 2 * fudge, $fn = inner_fn);
          }
        }
    }
    if (tycka_type == 1) {
      translate([0, - (Bottom_Diameter + Cylinder_Thickness + fudge) / 2, Cylinder_Height / 4]) rotate([0, 90, 90]) cylinder(r = Rod_Diameter / 2 + fudge, h = Bottom_Diameter + Cylinder_Thickness + fudge, $fn = inner_fn);
	} else {
       translate([0, - (Bottom_Diameter + Cylinder_Thickness + fudge) / 2, Cylinder_Height / 4]) rotate([0, 90, 90]) cylinder(r = Rod_Diameter / 2 + fudge, h = (Bottom_Diameter + Cylinder_Thickness + fudge) / 2 + cube_xy - cube_hl, $fn = inner_fn);
     }
  }
}

module lampicka() {
  inner_cylinder();
  inner_cylinder_bottom_with_holes();
  outer_cylinder();
}

module lampicka_modifier() {
  intersection() {
    lampicka();
    translate([0, 0, Screws_Height + fudge]) cylinder(r = Added_Diameter + fudge, h = Added_Height + Cylinder_Height);
  }
}

// lampicka_modifier();
// lampicka();

if (what == 0) {
  inner_plain_with_tycka(1);
} else if (what == 1) {
  inner_plain_with_tycka(2);
} else {
  lampicka();
}

// translate([0, - 200, Cylinder_Height / 4]) rotate([0, 90, 90]) cylinder(r = Rod_Diameter / 2 + fudge, h = 400, $fn = 72);
```


[User]
Okay, I'm looking to design a parametric finger prosthesis, specifically for a partial amputation. I've seen some designs out there but I want to be able to adjust it more to my specific needs and print it with flexible filament.

My goal is for the prosthesis to have two working hinges that print in place, without needing support material. I also want to incorporate a system so I can string it with tendon line so I can control the movement. I'd need it to be customizable in terms of scaling to fit the specific finger.

I'm thinking of a design with a bracer-like base that attaches to the hand and then two hinged segments that cover the remaining part of the finger. I’d like the hinges to be internal to the structure.

I would like to be able to control the following parameters:

*   **Hand Width:**  The width across the knuckles where the bracer would sit, for sizing.
*   **Finger Length:** How long each segment of the prosthetic finger will be - individually.
*   **Finger Width:** The width of the finger itself.
*   **Bracer Width:** The width of the bracer that connects to the hand.
*   **Strap Width:** Width of the strap on the bracer.
*   **Strap Height:** Height of the strap.
*   **Tendon Hole Diameter:**  The diameter of the hole through the hinges for the tendon line.
*   **Hinge Pin Diameter:** The diameter of the hinge pin that rotates in the hinge.
*   **Hinge Gap:** The tolerance of the gap in the hinge, for smooth rotation without friction.
*   **Tensioner Boolean**: A boolean value to enable or disable the tensioning system
*   **Individual Finger Boolean:** Individual boolean values for each finger to enable or disable individual fingers on the bracer. (Index, Middle, Ring, Pinky)

I think I need it to be a separate module, and for that I would expect the design to use the following:
*   **MCAD:** For the threaded components and some of the more complex hinge designs
*   **BOSL2:** For some of the more complex boolean operations

I'm flexible on the exact design, but the key things are print-in-place hinges, tendon actuation, and full customizability.

Could you create the OpenSCAD files for this design? I'm excited to see what you come up with!

[Assistant]
Brace_V1.scad:
```
// Dorsal Hand Brace v1 by Gyrobot
// http://www.gyrobot.co.uk
//
// preview[view:south west, tilt:top]

Hand = "Right" ; // [Left,Right]
//Width across knuckles
Hand_Width = 90 ;
//Do you required tensioners?
Tensioners = "Yes" ; // [Yes,No]
Index_Finger = "Yes" ; // [Yes,No]
Middle_Finger = "Yes" ; // [Yes,No]
Ring_Finger = "Yes" ; // [Yes,No]
Little_Finger = "Yes" ; // [Yes,No]
//Width of strap is maximised at "Hand Width" / 4
Strap_Width = 15 ; //
//Do you want the strap any thicker?
Strap_Height = 2 ; // Height of Strap

// Start of Code

hw = Hand_Width ;
fw = (Hand_Width/4) - 2.5;
sw = (Strap_Width > Hand_Width/4) ? Hand_Width/4 : Strap_Width;
sh = Strap_Height ;

//
// Call Strap Module
//
linear_extrude (sh)
{
    strap(hw,sw) ;
    mirror ([1,0,0]) strap(hw,sw) ;
}

//
// Call Finger Modules
//
if (Index_Finger=="Yes")
    {
        fl = sw-4 ;
        fx = fw*1.5;
        finger(fw,fl,fx,sh,sw);
    }
else
    {
        xmirr = Hand=="Left" ? 1 : -1;
        linear_extrude(sh)
        translate ([fw*1.5*xmirr,0,0]) square ([fw,sw],center=true);
    }

if (Middle_Finger=="Yes")
    {
        fl = sw-1 ;
        fx = fw*0.5;
        finger(fw,fl,fx,sh,sw);
    }
else
    {
        xmirr = Hand=="Left" ? 1 : -1;
        linear_extrude(sh)
        translate ([fw*0.5*xmirr,0,0]) square ([fw,sw],center=true);
    }

if (Ring_Finger=="Yes")
    {
        fl = sw-4 ;
        fx = fw*-0.5;
        finger(fw,fl,fx,sh,sw);
    }
else
    {
        xmirr = Hand=="Left" ? 1 : -1;
        linear_extrude(sh)
        translate ([fw*-0.5*xmirr,0,0]) square ([fw,sw],center=true);
    }

if (Little_Finger=="Yes")
    {
        fl = sw-7 ;
        fx = fw*-1.5;
        finger(fw,fl,fx,sh,sw);
    }
else
    {
        xmirr = Hand=="Left" ? 1 : -1;
        linear_extrude(sh)
        translate ([fw*-1.5*xmirr,0,0]) square ([fw,sw],center=true);
    }

// Strap

module strap(hw,sw)
{
    $fn = 64 ;
    difference ()
    {
        translate ([hw/-2,0,0])
        {
            scale ([hw/sw,1,1]) // Elliptical Strap End
            {
                circle (d=sw);
            }
        }
        square ([hw-10,sw],center=true);
        translate ([hw*-0.6,0,0])
        {
            scale ([40/sw,1,1]) // Elliptical Hole
            {
                circle (d=sw/2);
            }
        }
    }
}

// Finger
module finger(fw,fl,fx,sh,sw)
{
    $fn = 32 ;
    yoff = ((fw+sh*1.5)/2)-(sw/2);
    fxoff = Hand=="Left" ? fx : fx*-1;
    translate ([fxoff,0,0])
    {
        difference()
        {
            union ()
            {
                if (Tensioners=="Yes")
                {
                    linear_extrude (sh+3) //Tensioner Boss
                    circle (d=sw);
                    translate ([0,-sw,0]) //Tensioner Reels
                    {
                        difference ()
                        {
                            linear_extrude (sh+2) circle (d=sw-5,$fn=6); // Hexagonal Profile
                            rotate_extrude(convexity=10)// Groove
                            translate ([(sw-5)/2,(sh+2)/2,0])
                            circle (d=2);
                            rotate ([90,0,0])
                            {
                                translate ([0,(sh+2)/2,0])
                                cylinder (h=sw-5,d=2,center=true); // Centre Hole
                           }
                        }
                    }
                }
                linear_extrude (sh)
                square ([fw,sw],center=true);
                linear_extrude (sh+2)
                {
                    difference()
                    {
                        hull() // Finger Loop - Outer Profile
                        {
                            translate ([0,yoff,0])circle (d=fw+2.5);
                            translate ([0,fl+yoff,0])circle (d=fw+2.5);
                        }
                        hull() // Finger Loop - Inner Profile
                        {
                            translate ([0,yoff,0])circle (d=fw-2.5);
                            translate ([0,fl+yoff,0])circle (d=fw-2.5);
                        }
                    }
                }
            }
            if (Tensioners=="Yes")
            {
                translate ([0,0,1]) linear_extrude (sh*5) circle (d=sw-5,$fn=6); // Tensioner Hexagonal Pocket
                cylinder (d=sw-8,h=sh*10,center=true); // Tensioner Relief Hole
                translate([0,sw/2-2,(sh+2)/2+1]) cube([2,sw,2],center=true); //Tendon Channel - Tensioner
            }
            translate([0,fl+yoff+fw/2,(sh+2)/2]) cube ([2,fl,2],center=true); //Tendon Channel - Finger Loop
        }
    }
}
```


[User]
Okay, I'm looking to design a parametric motor mount for a quadcopter, specifically one that incorporates a tilt. I'd like it to be done in OpenSCAD, and I'd like the design to be flexible so I can adjust things later. I've seen designs that use separate top and bottom pieces to keep mounting screw lengths consistent, and I want to go that route too.

Here are the key parameters I need to be able to control:

*   **`motorTilt`**: The angle of the tilt in degrees (e.g. 13 degrees).
*   **`minThickness`**: The minimum thickness of the mount at its thinnest point. This helps make the mount taller and stronger. I'm thinking something like 1mm would be a good starting point.
*   **`motorMountHole1Centers`**: The center-to-center distance between the motor mounting holes that are typically side-to-side on the motor. My motors have a distance of 19mm.
*   **`motorMountHole2Centers`**: The center-to-center distance between the motor mounting holes that are typically front-to-back on the motor. My motors have a distance of 16mm.
*   **`motorMountHoleDiameter`**: The diameter of the mounting holes for the motor. I'm using 3mm screws.
*   **`motorDiameter`**: The diameter of the motor (around the body, not the shaft). My motor's diameter is about 27.8mm.
*   **`shaftClearanceDiameter`**: The diameter of the clearance hole for the motor shaft at the base. I'd say something like 8mm would do.
*   **`armAngle`**: The angle of the quadcopter arm relative to horizontal (or, at least, the angle of the arm at the mounting point). Mine is 110 degrees.
*   **`tabThickness`**: The thickness of the small tab on the top and bottom pieces that help to index the mount on the arm. I'm thinking 1.5mm should work.
*   **`tolerance`**: I want a small tolerance for clearances, like 0.1mm.

The design should create a cylinder as the main body of the mount. The height of this cylinder needs to be automatically calculated based on the desired tilt angle and the motor diameter, plus the minimum thickness specified.

The mount should have the motor mounting holes as cutouts, and it should have that shaft clearance hole as a cutout as well. I'd like the location tab to also be included as part of the upper and lower mounting sections.

Finally, I'd like the code to output *two* mirrored sets of top and bottom parts; one for the front left and rear right motors, and another for the front right and rear left motors. The output parts should have color for identification. I would like to be able to print two of each part to assemble four mounts.

Could you generate this OpenSCAD design for me? I don't need any specific libraries beyond the standard OpenSCAD functionality.

[Assistant]
mini_motor_tilt_mount_v2.1.scad:
```
//********************************************
//Motor mount tilt for quadcopter.
//
// Each mount consists of an upper piece that
//goes above the fram arm and another piece that
//goes below the frame arm.
//This will keep mounting screw lengths the same
//mounting screws will have no angle force on them.
//********************************************

//Motor tilt required
motorTilt=13;

//Minimum thickness of smallest edge of mount. Increase for a taller mount
minThickness=1;

//Mounting hole 1 centers. Looking at base of motor, with motor wires sticking out top, hole 1 is first hole to the counter clockwise direction. Default suits baby beast motors
motorMountHole1Centers = 19;

//Looking at base of motor, with motor wires sticking out top, hole 2 is first hole to the clockwise direction. Default suits baby beast motors
motorMountHole2Centers = 16;

//Mounting screw diameter
motorMountHoleDiameter=3;

//This will be the diameter of the mount
motorDiameter=27.8;

//clearance required for motor shaft at base
shaftClearanceDiameter = 8;

//Frame/arm

//Angle of arm in deg.
armAngle = 110;

//Motor mount will be minimum height required to get
//desired angle with minimum thickness as previously
//set in variable.
heightOfCylinder=tan(motorTilt)*motorDiameter+2*minThickness;
echo(heightOfCylinder);

//Hidden from thingiverse customizer
/*[Hidden]*/

//How high mounting orientation tab will be
tabThickness = 1.5;

$fn=100;
tolerance=.1;

//create cylinder of Motor diameter and height determined by
//tilt angle and motor diameter and minimum thickness
module Mount()
{

difference()
{

//create cylinder
union()
{
cylinder(heightOfCylinder,motorDiameter/2,motorDiameter/2,true);
//back locating tab
translate([0,motorDiameter/2,-heightOfCylinder/2+minThickness/2])
cylinder(minThickness,tabThickness,tabThickness,true);

//front locating tab
translate([0,-motorDiameter/2,-heightOfCylinder/2+minThickness/2])
cylinder(minThickness,tabThickness,tabThickness,true);

}
//translate([0,0,-heightOfCylinder/2-tolerance])

//subtract cylinder for shaft/circlip clearance at base of motor.
cylinder(heightOfCylinder+tolerance,shaftClearanceDiameter/2,shaftClearanceDiameter/2,true);
}

}

module MountHoles()
{
//MountHole
module MountHole()
{
cylinder(heightOfCylinder+tolerance,motorMountHoleDiameter/2,motorMountHoleDiameter/2,true);
}

{
translate([-motorMountHole1Centers/2,0,0])
MountHole();

translate([motorMountHole1Centers/2,0,0])
MountHole();

translate([0,-motorMountHole2Centers/2,0])
MountHole();

translate([0,motorMountHole2Centers/2,0])
MountHole();
}
}//end MountHoles()

//Rotate requred angle and slice at required tilt angle
//Mirror object of left (or right amrs).
module Motor1and3()
{
//Top half with shaft clearance cutout
difference()
{
difference()
{
Mount();
rotate([0,0,45-(armAngle-90)])
MountHoles();
}
//create a cube,tilt it,position it to slice at angle.
translate([-(motorDiameter+tolerance)/2,-motorDiameter/2,-heightOfCylinder/2+minThickness])
rotate([motorTilt,0,0])
cube([motorDiameter+tolerance,motorDiameter*2,heightOfCylinder],false);
}

}

module Motor2and4()
{
difference()
{

difference()
{

Mount();
rotate([0,0,45+(armAngle-90)])
MountHoles();
}

translate([-(motorDiameter+tolerance)/2,-motorDiameter/2,-heightOfCylinder/2+minThickness])
rotate([motorTilt,0,0])
cube([motorDiameter+tolerance,motorDiameter*2,heightOfCylinder],false);
}
}

//dinner time
//red=pair 1
//green=pair 2
//print 2x these plates for a quad.

translate([motorDiameter/2+2,0,0])
color([1,0,0])
//RED motor 2 top
Motor1and3();

mirror([1,0,0]){
translate([motorDiameter/2+2,0,0])
color([0,1,0])
//GREEN Motor 2 bottom
Motor1and3();
}

translate([motorDiameter/2+2,motorDiameter+tabThickness*2+2,0])
color([0,0,1])
//BLUE motor 3 top
Motor2and4();

mirror([1,0,0]){
translate([motorDiameter/2+2,motorDiameter+tabThickness*2+2,0])
color([1,1,0])
//YELLOW motor 3 bottom
Motor2and4();
}

```


[User]
I'd like to create a customizable nameplate for my desk, and I want it to be parametric so I can easily adjust the size and text. I envision a rectangular plate with text on it, and a separate base that the plate can sit on.

Here are the specifics:

**Nameplate:**

*   The nameplate should be a thin rectangular prism. The size should be controlled by a `plate_size` parameter, which defines the length in mm. The other dimensions should scale proportionately, and the plate should be centered.
*   There should be a parameter `type_your_name` which contains the text to be displayed.
*   The text should be drawn using a 5x7 font, and it should scale proportionately with the `plate_size` parameter, ensuring it roughly fills the plate, and its characters do not touch the edges of the plate. The text should be slightly raised above the plate surface (e.g. 0.3mm).
*   I need a module `drawtext(text)` that handles the 5x7 font drawing, and a character table. I’m not looking to use an external font or any files in this process. I am providing a character table in the example code I've attached, but you do not need to make use of it.
*   I want the nameplate to have a lip on the rear so that it can be mounted at an angle in the base (see base requirements below).

**Base:**

*   The base should be a solid form with a slanted slot cut out to hold the nameplate at an angle.
*   The base should be sized so that the nameplate sits snugly within the slot.
*   I would like the base to also be parametric, so that I can easily resize it.
* The base should be capable of holding nameplates of varying depths and not allow them to slip out.

I'd prefer to have the nameplate and base defined in separate files. Can you generate the OpenSCAD code for these files? I’m hoping this will be easy to customize, so all parameters should be clearly defined and adjustable.

[Assistant]
name_plate.scad:
```
type_your_name = "";
plate_size = 34;  // [10:100]
x = (16.5/34) * plate_size;

translate([x,1.7,-.3])
cube([plate_size,5,1],center=true);

//Draw text
#scale([.5,.5,.5]) drawtext(type_your_name);

//Draw character set
//scale([2,2,2]) drawtext(" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}");

module drawtext(text) {
	//Characters
	chars = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}";

	//Chracter table defining 5x7 characters
	//Adapted from: http://www.geocities.com/dinceraydin/djlcdsim/chartable.js
	char_table = [ [ 0, 0, 0, 0, 0, 0, 0],
                  [ 4, 0, 4, 4, 4, 4, 4],
                  [ 0, 0, 0, 0,10,10,10],
                  [10,10,31,10,31,10,10],
                  [ 4,30, 5,14,20,15, 4],
                  [ 3,19, 8, 4, 2,25,24],
                  [13,18,21, 8,20,18,12],
                  [ 0, 0, 0, 0, 8, 4,12],
                  [ 2, 4, 8, 8, 8, 4, 2],
                  [ 8, 4, 2, 2, 2, 4, 8],
                  [ 0, 4,21,14,21, 4, 0],
                  [ 0, 4, 4,31, 4, 4, 0],
                  [ 8, 4,12, 0, 0, 0, 0],
                  [ 0, 0, 0,31, 0, 0, 0],
                  [12,12, 0, 0, 0, 0, 0],
                  [ 0,16, 8, 4, 2, 1, 0],
                  [14,17,25,21,19,17,14],
                  [14, 4, 4, 4, 4,12, 4],
                  [31, 8, 4, 2, 1,17,14],
                  [14,17, 1, 2, 4, 2,31],
                  [ 2, 2,31,18,10, 6, 2],
                  [14,17, 1, 1,30,16,31],
                  [14,17,17,30,16, 8, 6],
                  [ 8, 8, 8, 4, 2, 1,31],
                  [14,17,17,14,17,17,14],
                  [12, 2, 1,15,17,17,14],
                  [ 0,12,12, 0,12,12, 0],
                  [ 8, 4,12, 0,12,12, 0],
                  [ 2, 4, 8,16, 8, 4, 2],
                  [ 0, 0,31, 0,31, 0, 0],
                  [16, 8, 4, 2, 4, 8,16],
                  [ 4, 0, 4, 2, 1,17,14],
                  [14,21,21,13, 1,17,14],
                  [17,17,31,17,17,17,14],
                  [30,17,17,30,17,17,30],
                  [14,17,16,16,16,17,14],
                  [30,17,17,17,17,17,30],
                  [31,16,16,30,16,16,31],
                  [16,16,16,30,16,16,31],
                  [15,17,17,23,16,17,14],
                  [17,17,17,31,17,17,17],
                  [14, 4, 4, 4, 4, 4,14],
                  [12,18, 2, 2, 2, 2, 7],
                  [17,18,20,24,20,18,17],
                  [31,16,16,16,16,16,16],
                  [17,17,17,21,21,27,17],
                  [17,17,19,21,25,17,17],
                  [14,17,17,17,17,17,14],
                  [16,16,16,30,17,17,30],
                  [13,18,21,17,17,17,14],
                  [17,18,20,30,17,17,30],
                  [30, 1, 1,14,16,16,15],
                  [ 4, 4, 4, 4, 4, 4,31],
                  [14,17,17,17,17,17,17],
                  [ 4,10,17,17,17,17,17],
                  [10,21,21,21,17,17,17],
                  [17,17,10, 4,10,17,17],
                  [ 4, 4, 4,10,17,17,17],
                  [31,16, 8, 4, 2, 1,31],
                  [14, 8, 8, 8, 8, 8,14],
                  [ 0, 1, 2, 4, 8,16, 0],
                  [14, 2, 2, 2, 2, 2,14],
                  [ 0, 0, 0, 0,17,10, 4],
                  [31, 0, 0, 0, 0, 0, 0],
                  [ 0, 0, 0, 0, 2, 4, 8],
                  [15,17,15, 1,14, 0, 0],
                  [30,17,17,25,22,16,16],
                  [14,17,16,16,14, 0, 0],
                  [15,17,17,19,13, 1, 1],
                  [14,16,31,17,14, 0, 0],
                  [ 8, 8, 8,28, 8, 9, 6],
                  [14, 1,15,17,15, 0, 0],
                  [17,17,17,25,22,16,16],
                  [14, 4, 4, 4,12, 0, 4],
                  [12,18, 2, 2, 2, 6, 2],
                  [18,20,24,20,18,16,16],
                  [14, 4, 4, 4, 4, 4,12],
                  [17,17,21,21,26, 0, 0],
                  [17,17,17,25,22, 0, 0],
                  [14,17,17,17,14, 0, 0],
                  [16,16,30,17,30, 0, 0],
                  [ 1, 1,15,19,13, 0, 0],
                  [16,16,16,25,22, 0, 0],
                  [30, 1,14,16,15, 0, 0],
                  [ 6, 9, 8, 8,28, 8, 8],
                  [13,19,17,17,17, 0, 0],
                  [ 4,10,17,17,17, 0, 0],
                  [10,21,21,17,17, 0, 0],
                  [17,10, 4,10,17, 0, 0],
                  [14, 1,15,17,17, 0, 0],
                  [31, 8, 4, 2,31, 0, 0],
                  [ 2, 4, 4, 8, 4, 4, 2],
                  [ 4, 4, 4, 4, 4, 4, 4],
                  [ 8, 4, 4, 2, 4, 4, 8] ];

	//Binary decode table
	dec_table = [ "00000", "00001", "00010", "00011", "00100", "00101",
  	            "00110", "00111", "01000", "01001", "01010", "01011",
  	            "01100", "01101", "01110", "01111", "10000", "10001",
  	            "10010", "10011", "10100", "10101", "10110", "10111",
	            "11000", "11001", "11010", "11011", "11100", "11101",
	            "11110", "11111" ];

	//Process string one character at a time
	for(itext = [0:len(text)-1]) {
		//Convert character to index
		assign(ichar = search(text[itext],chars,1)[0]) {
			//Decode character - rows
			for(irow = [0:6]) {
				assign(val = dec_table[char_table[ichar][irow]]) {
					//Decode character - cols
					for(icol = [0:4]) {
						assign(bit = search(val[icol],"01",1)[0]) {
							if(bit) {
								//Output cube
								translate([icol + (6*itext), irow, 0])
									cube([1.0001,1.0001,1]);
							}
						}
					}
				}
			}
		}
	}
}

```
base_plate.scad:
```
difference(){
cube([25,5,1],center=true);
translate([0,0,2.2])
rotate([75,0,0])
cube([44,5,1],center=true);
}
```


[User]
I'd like to get some OpenSCAD files created for organizing the components of the board game *Machi Koro*. Specifically, I need a container for the cards and a separate organizer for the coins and dice. It should all fit into the original German game box.

For the card holder, I'm envisioning two identical compartments side-by-side. Each compartment should be sized to comfortably fit a standard *Machi Koro* card, but with a little wiggle room so it's easy to take them out and put them back. I think we should also put some holes in the sides and maybe in the bottom of each compartment; this will save on print time and materials, and make it easier to grip the cards from the sides. Maybe we could even make a larger cutout on the front side at the bottom, to make sure the cards can be easily grabbed. We should also add some chamfers to the outer edges, to make it look nice.

The coin/dice organizer is a bit more complex. It needs to be able to hold all of the coins from the German first edition: 50 of the '1' value coins, 12 of the '5' value coins, and 10 of the '10' value coins. It also needs to have a space for the two dice. I’m imagining a tilted design with vertical slots for each coin type, and the dice section somewhere convenient. It should be easy to access coins and dice but also keep them from sliding around. Maybe we can add labels for the coin values next to their slots and use a little logo for decoration. We’ll need to ensure it fits snugly in the box beside the card holder, with space for its top lid. The sides of this organizer should also include some holes to save on printing material.

We should generate two STL parts, one for the cards and one for the coins, but also all parts as a set for easy use and we should also have the lid of the coins as a separate STL file.

I'd also like to be able to customize a few things: the amount of wiggle room, whether or not the logo is included, the size and number of holes on the sides and bottom, and the type of corner cutoff we use on the coin holder (None, Middle Only, or All), and some of these parameters should be saved for every part.

I'm assuming this will all be done with OpenSCAD. Please let me know if you need more details! I don't have a preference for any particular libraries, and I'm okay with no library at all if it makes sense.

[Assistant]
machi_koro_VH.scad:
```
//Select an STL part to generate.
part = "all"; // [cards,coins,cointop,all]

//The space around things to make them slide and not stick when put together
wiggle=.5;

//Show logo?
logo=true;

//Set to 0 to remove the holes to render and maybe print faster
do_holes_for_coins=0; //[0,1]

//Set to 0 to remove the holes to render and maybe print faster
do_holes_for_cards=1; //[0,1]

//set to avoid cutting off the corners
cornercutoff="onlyMiddle"; //["all_cutoff","onlyMiddle","none"]

/* [Hidden] */
$fn=50;

box_w=121;
box_h=170;
box_depth=37-2; //papers on top: 2mm
dice=16+2*wiggle;
coin=20.5;
coin_5_thick=11;
wall=1;

//to see into the coin holder
cut_to_see=false;

/*
Machi Koro storage
Version H, February 2015
Written by MC Geisler (mcgenki at gmail dot com)

This file defines a card box and a coin/dice holder for the  game 'Machi Koro'.

Have fun!

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

//cards
width=59+wiggle; //59.5+wiggle; //printed: 21 - 20.7 -> 98,6%
length=91+2*wiggle; //printed: 43 - 42.65
corner=1.5; //2.5 -> 3
//coins
//coin_width_complete=(box_w-dice-3*wiggle); //23.5
coin_width_complete=(box_w-2*wiggle); //23.5
//coin_width=96/3; //23.5
coin_width=coin_width_complete/3;
coin_length=74; //46.5
coin_corner=3; //Eigentlich groesser

height=box_depth-wiggle;;

//two sizes as array to select them
//type = 0,1,2
w_arr=[width, coin_width];
l_arr=[length,coin_length];
c_arr=[corner,coin_corner];
h_arr=[height,height];

//box
wall=1.5; //Wall thickness

echo ("gamebox_w=",box_w," container_w=", 2*width+1*wall);
echo ("gamebox_w=",box_w," dice plus coincontainer_w=", coin_width_complete+2*wiggle);
echo ("gamebox_h=",box_h," container_h=", length+2*wall+coin_length+wiggle);
echo ("gamebox_depth=",box_depth," container_depth=", height+wiggle);

//breite derzeit: w_arr[type]*2+wall-.05
//= width*2+wall-.05
//= (59.5+wiggle) *2 + wall -0.05

numholes=5;
numholespm=numholes/2-.5;
holedist=1.25; //hole distance in percent
hole=length/holedist/numholes/sqrt(2)*.9; //hole side length in mm

//corner cutoff: "corner_diag_in" diagonal length to cut in
module cutofftoken(w,l,h,corner_diag_in)
{
	cutoff=(w>l?w:l);
	cutoffdistzero = 1/(2*sqrt(2))*(w+l) + cutoff/2 ;
	//cutoffdist=cutoffdistzero-corner/sqrt(2);
	cutoffdist=cutoffdistzero-corner_diag_in;

	rotate([0,0,45])
	{
		translate([cutoffdist,0,0])
			cube([cutoff,cutoff,h], center=true);
		translate([-cutoffdist,0,0])
			cube([cutoff,cutoff,h], center=true);
		translate([0,cutoffdist,0])
			cube([cutoff,cutoff,h], center=true);
		translate([0,-cutoffdist,0])
			cube([cutoff,cutoff,h], center=true);
	}
}

//a pile of cards
module token(w,l,h,corner)
{
	difference()
	{
		cube([w,l,h], center=true);
		cutofftoken(w,l,h,corner/sqrt(2));
	}
}

module holerow(n1,n2)
{
	if (do_holes_for_cards!=0)
	{
		for(i=[n1:n2])
			translate([0,i*hole*sqrt(2)*holedist,0])
				rotate([0,0,45])
					cube([hole,hole,wall*4],center=true);
	}
}

module holearea(numrows,columns)
{
	for (i=[0:numrows-1])
	{
		assign (even = (i/2==floor(i/2)?1:0) )
			translate([i*hole*sqrt(2)*holedist/2,even*hole*sqrt(2)*holedist/2,0])
				holerow(-floor(columns/2-.5),(1-even)+floor(columns/2)-1);
	}
}

function corner_diag_in_Outside(wall,corner) = (sqrt(2)-1)*wall+corner/sqrt(2);
//a chamfered box without holes
module genericbox(w,l,hh,corner)
{
	difference()
	{
		cube([w+2*wall,l+2*wall,hh], center=true);

		//cutout the token storage
		translate([0,0,wall])
			token(w,l,hh,corner);

		//cutoff corners
		cutofftoken(w+2*wall,l+2*wall,hh+2,corner_diag_in_Outside(wall,corner));
	}
}

//a token box
takeoutscale=1;
function stackheight(type)=(h_arr[type]);//stack plus bottom wall
module box(wall, type, num)
{
	w = w_arr[type];
	l = l_arr[type];
	h = stackheight(type);
	corner = c_arr[type];

	mirror([0,1,0])
            translate([w/2,l/2+wall,h/2]) //the w/2 works only if the last box is wider
		genericbox(w,l,h,corner);
}

//side holes
module sideholes(wall, type, side)
{
	w = w_arr[type];
	l = l_arr[type];
        h = stackheight(type);
	takeoutwidth=w-corner*2;

	mirror([0,side=="front"?1:0,0])
		translate([w/2,l/2+wall/2,0]) //the w/2 works only if the last box is wider
		{
				//cutout holes in the bottom to print faster
				translate([-2*hole*sqrt(2)*holedist/2,0,wall/2])
					holearea(5,5);

				//lowest hole bigger
				if(type!=1)
                                {
                                    translate([0,3*hole*holedist+hole/sqrt(2)*4,h/2])
					rotate([0,0,45])
                                            cube([hole*4,hole*4,h+1],center=true);
                                }

				//cutout holes in the sides to print faster
				translate([0,-hole*sqrt(2)*holedist/2*0,hole*sqrt(2)/2+2*wall])
				{
					//side holes should cut only once - as the last compartment is bigger and they wouldnt match

					translate([-w/2,0,0])
                                            rotate([0,-90,0])
                                                holearea(2+(h_arr[type]>15?1:0),(type==0?5:3));

					translate([w/2,0,0])
                                            rotate([0,-90,0])
                                                holearea(2+(h_arr[type]>15?1:0),(type==0?5:3));
				}
		}
}

//several boxes
module boxes(number,type)
{
    intersection()
    {
            difference()
            {
                //boxes
                union()
                {
                        for (x = [0:number-1])
                        {
                                translate([x*(w_arr[type]+wall),0,0])
                                {
                                        box(wall,type,x);
                                }
                        }
                }

                //cut corner holders
                mirror([0,1,0])
                {
                    translate([w_arr[type]*1.5,l_arr[type]-wall,wall])
                        cube([w_arr[type]/2+5,4*wall,stackheight(type)*2]);
                    translate([0-1,l_arr[type]-wall,wall])
                        cube([w_arr[type]/2+5,4*wall,stackheight(type)*2]);
                }

                //cut holes
                union()
                {
                        for (x = [0:number-1])
                        {
                                translate([x*(w_arr[type]+wall),0,0])
                                {
                                        sideholes(wall, type, "front");
                                }
                        }
                }
            }

            //cut left and right side, as they are provided by the original game box (to save space)
            mirror([0,1,0])
                translate([.025,0,0])
                    cube([w_arr[type]*2+wall-.05,l_arr[type]+2*wall,stackheight(type)]);
    }
}

//-------------------------------

if (part=="cards" || part=="all")
{
    boxes(2,0);
}

//-------------------------------

coin_dist=9.3;
coin_rotate=15;

logodepth=2;
scalelogo=.5;
module logo(dologo)
{
    if (dologo==true)
    {//logo
        translate([0,0,-logodepth])
            linear_extrude(height = logodepth*2+2, center = false, convexity = 10)
                import (file = "machikorologo.dxf", scale=scalelogo);
    }
}

//in the german first edition there are 72 token coins!)
//coin10=10
//coin5=12
//coin1=50;
txt_arr=        ["1","1","5","10"];
numcoinslots=   [25, 25, 12, 10];
module verticalcoins(numcoins,str,adder)
{
    numslots=round(numcoins/5);
    restcoins=numcoins%5;
    remainder=(restcoins==0?0:restcoins+.25);
    max=5;

    for(y = [max-(numslots-1):max+(remainder!=0?1:0)])
        translate([(y%2==0?coin_dist/2:0)+coin/2+5,
                    y*coin_5_thick+19-(y>max?coin_5_thick*(5-remainder)/5+.01:0)-(remainder!=0?coin_5_thick*remainder/5:0),0])
        {
                rotate([90,0,0])
                    translate([0,0,-adder])
                        cylinder(r=(coin+wiggle)/2+adder,h=(y>max?coin_5_thick*remainder/5:coin_5_thick)+2*adder);

                if (y==max && adder==0)
                {
                    translate([-.5+(str=="10"?-3:0),6+(remainder!=0?coin_5_thick*remainder/5:0),0])
                        linear_extrude(height = 3, center = true, convexity = 10, twist = 0)
                            text(str,size=6,font="PTF NORDIC Rnd",valign="center");
                }
        }
}

module takeoutcut(theight, takeout, takeoutscale, type)
{
    //takeoutscale=.4;

    rotate([0,0,45])
        linear_extrude(height = theight, scale=takeoutscale, center = false, convexity = 10)
            if (type=="square")
                square([takeout,takeout],center=true);
            else
                circle(r=takeout,center=true);
}

module coins_and_dice(adder)
{
    for(x = [0:3])
    {
        translate([x*(coin+coin_dist)-2,0,0])
        {
            //verticalcoins(1,(x>1?3:6));
            verticalcoins(numcoinslots[x],txt_arr[x],adder);
            if (x==3)
            {
                //the 2 dice slot
                translate([dice*0.2,24,0])
                    cube([dice*2+2*adder,dice+2*adder,dice+2*adder],center=true);
            }

            if (adder>=wall)
            {
                //verticalrods
                verticalrod=1.5*coin;

                translate([coin-wall/2,24,0])
                    cube([wall,verticalrod,coin]);
            }
        }
    }

    if (adder>=wall)
    {
         translate([coin*.5+5,19,0])
         {
            translate([0,.5*coin_5_thick,0])
                cube([3*(coin+coin_dist),wall,coin]);
            translate([0,4.3*coin_5_thick,0])
                cube([3*(coin+coin_dist),wall,coin]);
         }
    }
}

module coinholder(cornercutoff,dologo)
{
    intersection()
    {
        difference()
        {
            //straight up cube for cutting the general shape
            cube([coin_width_complete,coin_length,150]);

            if (cornercutoff!="none")
            {
                //cut corners and in the middle, to easily take out the coin holder from the box later
                translate([0,coin_length,-.1])
                {
                    if(cornercutoff!="onlyMiddle")
                    {
                        for (i=[0,0.5,1])
                            translate([coin_width_complete*i,0,0])
                                takeoutcut(30,35,.4,"square");

                        if(cornercutoff!="onlyMiddle")
                            for (i=[0,0.5,1])
                                translate([coin_width_complete*i,-coin_length,0])
                                    takeoutcut(12,30,.4,"square");
                    }
                    else
                    {
                        for (i=[0.5])
                            translate([coin_width_complete*i,0,0])
                                takeoutcut(30,20,.53,"circle");
                    }
               }
           }
        }

        //rotated coin holder
        translate([0,0,-32])
            rotate([coin_rotate,0,0])
                difference()
                {
                    //basic rotated shape
                    translate([0,10.7,0])
                        cube([coin_width_complete,coin_length*2,40]);

                    //coin slots
                    translate([0,0,40])
                    {
                        coins_and_dice(0);

                        //the logo
                        translate([75-2,33.5,0])
                            logo(dologo);
                    }

                    //three holes in the base
                    if (do_holes_for_coins!=0)
                    {
                        //save material
                        translate([-1,0,0])
                            rotate([45-coin_rotate,0,0])
                            {
                                translate([0,70,-23])
                                        cube([coin_width_complete+2,10,10]);
                                translate([0,61,-14])
                                        cube([coin_width_complete+2,7.5,7.5]);
                                translate([0,54,-7])
                                        cube([coin_width_complete+2,5.5,5.5]);
                            }
                        }
                }
   }
}

module coinholdertop()
{
    additionalWiggle=0.4;

    intersection()
    {
        difference()
        {
            //bigger holder
            union()
            {
                coins_and_dice(additionalWiggle+wall);

                linear_extrude(height = wall, center = true)
                    offset(r = wall*1)
                        projection(cut = true)
                            coins_and_dice(additionalWiggle+wall);
            }

            //cutout coins
            #coins_and_dice(additionalWiggle);

            //cutoff bottom
            translate([2,10.7,-40])
                cube([coin_width_complete,coin_length*2,40]);
        }

        cube([box_w,box_h,(dice+2*wall)/2]);
    }

}

if (part=="coins" || part=="all")
{
    translate([0,-coin_length-(l_arr[0]+2.5*wall),0])
        difference()
        {
            coinholder(cornercutoff,logo);

            //to look into the coin holder for debugging purposes
            if (cut_to_see==true)
                translate([40,0,0]) cube(80);
        }
}

if (part=="all")
{
    translate([0,-coin_length-(l_arr[0]+2.5*wall),0])
        translate([0,0,-32])
            rotate([coin_rotate,0,0])
                translate([0,0,40])
                    coinholdertop();

    //show the german machi koro box
    //%translate([0,-box_h,0])
    //    machikorobox();

}
if (part=="cointop")
{
     rotate([0,180,0])
        coinholdertop();
}

module machikorobox()
{
    cube([box_w,box_h,box_depth]);
}

```


[User]
Okay, I'm looking to get a parametric fin alignment jig designed for model rockets. I've seen a few examples but I want to make sure I can tweak everything to fit my needs.

Basically, the jig should slide over the rocket body tube and have slots for the fins to sit in, holding them at the correct angle and spacing while the glue dries.

Here's the breakdown of what I'd need it to do and what parameters I want to be able to control:

**Core Structure:**

*   The jig should be a cylinder that fits over the rocket body tube.
*   It needs to have slots (or 'holders') extending outwards from the cylinder that the fins will slot into.
*   There needs to be a way to ensure that fins are always the correct distance from each other, distributed evenly around the circumference of the tube, so the jig needs to have a parameter for the number of fins to be used, and the fin holders should be spaced appropriately.
*   There should be a minimum wall thickness to ensure the jig is sturdy enough.
*   I'd like an option to add an inner gap so that glue doesn't stick the jig to the rocket tube.
*   The jig should have an overall height that is adjustable

**Parameters:**

*   `tube_diameter`:  The outer diameter of the rocket body tube in millimeters.
*   `fin_width`: The width (thickness) of the fin material in millimeters.
*   `fin_number`: The number of fins (e.g. 3, 4).
*   `jig_height`:  The overall height of the jig in millimeters.
*   `jig_fin_width`: The width (length) of the fin holders in millimeters, which should be larger than the tube diameter to provide support.
*   `wall_thickness`:  The thickness of the jig's wall in millimeters.
*   `glue_clearance`: The desired inner gap between the rocket tube and the jig to prevent glue sticking in millimeters.

**Functionality:**

*   The jig needs to be created by subtracting shapes from the solid parts
*   The fin holders should extend outwards from the cylinder and have a thickness equal to `fin_width` plus two `wall_thickness`
*   The inner gap should be created by creating an inner cylinder at an offset from the center of the jig, that will be removed from the structure.

**Libraries:**

I think just the basic OpenSCAD library should be all that's needed for this.

Could you generate a parametric OpenSCAD file or set of files to do this? Please make sure that it's well-commented so I can understand how the code works.

[Assistant]
Fin_Aligner.scad:
```
//	*********************************************
//	*  Fin Alignment Tools for Model Rockets	*
//	*	   Blair Thompson (aka Justblair)		*
//	*		    www.justblair.co.uk				*
//	*********************************************

// Parametric

tube_diameter	=	18 		;//mm measured tube outer diameter
fin_width		=	2.64 	;//mm measured fin width
fin_number		=	3		;// Number of fins
jig_height		=	30		;//mm height of jig
jig_fin_width	=	22		;//mm width of jig fin holders
wall_thickness	=	4		;//mm desired wall thickness

glue_clearance	=	4		;//mm inner gap to prevent glue sticking to jig

$fn = 150;  // Changes the smoothness of the curves

difference(){
	// Create the solid shapes
	union(){

			cylinder (r = (tube_diameter/2) + 10, h = 2);
			cylinder (r = (tube_diameter/2) + wall_thickness, h =jig_height);

		for (i = [0:fin_number - 1]){

			// Fin holders
			rotate( i * 360 / fin_number, [0, 0, 1])
				translate (-[(fin_width + wall_thickness * 2) / 2, 0, 0])
					cube([fin_width + wall_thickness * 2, jig_fin_width + tube_diameter,jig_height]);

			// End Ties
			rotate( i * 360 / fin_number, [0, 0, 1])
				translate ([-(fin_width + wall_thickness * 2) / 2, 0, 0])
					cube([fin_width + wall_thickness * 2, jig_fin_width + tube_diameter + wall_thickness, 4]);

			// Inner gap
			rotate( i * 360 / fin_number, [0, 0, 1])
				translate ([0, tube_diameter/2, 0])
					cylinder (r = glue_clearance + wall_thickness, h =jig_height);
		}
	}

	// Create the cutout shapes

	// Rocket tube body
	translate ([0,0,-0.5])
		cylinder (r=tube_diameter/2, h = 45 );

	for (i = [0:fin_number - 1]){

		// Fin cutouts
		rotate( i * 360 / fin_number, [0, 0, 1])
			translate ([-fin_width/2, 0, -0.5])
				cube([fin_width, jig_fin_width + tube_diameter, jig_height + 1]);

		// Inner gap
		rotate( i * 360 / fin_number, [0, 0, 1])
			translate ([0, tube_diameter/2, -0.5])
				cylinder (r = glue_clearance, h = jig_height + 1);
	}
}

```


[User]
Hi, I'm looking to create a parametric motor mount generator in OpenSCAD. I've got an existing design that does *almost* what I want, and I'd like to rebuild it from the ground up so it's cleaner and easier to modify.

The basic idea is a cylindrical base with a central hole for the motor, and then mounting points for screws around the base. The existing code has a few optional features that I'd also like to keep. Here's a breakdown of the parameters I need to control:

*   **Motor Size:** The diameter of the motor that the mount is meant to hold.
*   **Motor Hole Modifier Percentage:**  A percentage adjustment to the motor hole diameter to account for printing inaccuracies that tend to make holes smaller. For example 1% would increase the diameter by 1% of the original diameter. This would be a percentage (e.g. 1.0 for 1%) not a decimal (e.g. 0.01 for 1%).
*   **Wall Thickness:** The thickness of the material around the motor hole cylinder.
*   **Base Height:** The height of the base of the mount.
*   **Support Hole:** The diameter of the hole at the base of the motor mount cylinder.
*   **Tower Height:** The height of the central cylinder around the motor hole.
*  **Tower Support Diameter:** The outer diameter of the base of the cylinder around the motor hole.
*   **Groove Size:** The diameter of an optional groove cut into the base.
*   **Tower Groove Height:** The height of the optional groove from the base.
*   **Screw Holes Diameter:** The diameter of the screw holes.
*   **Screw Base Diameter:** The diameter of the cylindrical base around the screw holes.
*  **Screw Base Height:** The height of the base around the screw holes.
*   **Screw Support Base Width:** The width of the base that connects the screw holes to the main body.
*   **Screw Holes Radius:** The radius of the circle on which the screw holes are placed.
*   **Screw Holes Connector Radius:** The radius from the center of the motor mount to where the support base connects to the main body of the motor mount.
*   **Notch:** A boolean (0 or 1) to enable or disable a notch cutout in the cylinder.
*   **Notch Depth:** The depth of the notch in the cylinder if the notch feature is enabled.
*  **Pillars:** The number of support pillars around the base of the mount.
*  **Pillar Height:** The height of the support pillars.
*   **Pillar Width:** The width of the support pillars.
*  **Pillar Length:** The length of the support pillars.
*  **Pillar Inset:** The inset distance of the support pillars from the edge of the base.
*   **Pillar Z Offset:** The offset of the support pillars on the Z axis.

I'd like to keep all these parameters easily modifiable. Also, I'd like the code to output some text at the end, showing the actual inner diameter of the motor hole (with the modification applied) as well as the raw motor diameter.

For this, could you generate a single .scad file? I'm not planning on using any external libraries. I'm trying to keep it simple right now.

[Assistant]
motor-mount.scad:
```
//By http://www.thingiverse.com/Paintballmagic

motor_size = 7.0;
motor_hole_modifier_percentage = 1.0;
wall_thickness = 1.0;
base_height = 2.0;
support_hole = 7.0;
tower_height = 10.0;
tower_support_diameter = 12.0;
groove_size = 8.65;
tower_grove_height = 0.0;
screw_holes_diameter = 2.5;
screw_base_diameter = 4.0;
screw_base_height = 2.0;
screw_support_base_width = 6.0;
screw_holes_radius = 7.62;
screw_holes_connector_radius =7.0;
notch = 1; // [0,1]
notch_depth=5;
pillars = 4;
pillar_height = 2.0;
pillar_width = 2.0;
pillar_length = 2.0;
pillar_inset = 0.5;
pillar_z_offset = 0.0;

// No need to modify below this line. Anything adjustable is listed in the aboveglobal veriables.

module example001()
{

for ( i = [0 : pillars-1] )
{

  rotate(a= i* 360/pillars, v=[0,0,1])
translate([0,motor_size/2+pillar_length/2-pillar_inset,pillar_height/2+pillar_z_offset ])
cube(size = [pillar_length,pillar_width,pillar_height], center = true);
}

motor_size = motor_size +(motor_hole_modifier_percentage*.1);
if (notch == 0){
difference() {
cylinder(h = tower_height, r=motor_size/2+ wall_thickness );
cylinder (h = tower_height*4, r=motor_size/2, center = true, $fn=100);

}
}
if (notch == 1){

difference() {
translate([0,0,base_height + tower_grove_height ])
cylinder(h = tower_height -(base_height + tower_grove_height), r=motor_size/2+ wall_thickness  );
cylinder (h = tower_height*4, r=motor_size/2, center = true, $fn=100);
translate([0,0,tower_height-notch_depth + (tower_height/2)])
cube(size = [1,20,tower_height], center = true);

}

}

difference() {
cylinder(h = base_height, r=tower_support_diameter/2);
cylinder (h = tower_height, r=support_hole/2, center = true, $fn=100);
}

if(tower_grove_height > 0 )
{
difference() {
translate([0,0,base_height + tower_grove_height ])
cylinder(h = base_height, r=tower_support_diameter/2);
cylinder (h = tower_height, r=motor_size/2, center = true, $fn=100);
}
}

difference() {
translate([-screw_holes_radius,0,0])
cylinder(h = base_height, r=screw_base_diameter/2);
translate([-screw_holes_radius,0,0]) cylinder(h = tower_height, r=screw_holes_diameter/2, center = true, $fn=100);

}

difference() {
translate([screw_holes_radius,0,0])
cylinder(h = base_height, r=screw_base_diameter/2);
translate([screw_holes_radius,0,0]) cylinder(h = tower_height, r=screw_holes_diameter/2, center = true, $fn=100);

}

difference() {
translate([screw_holes_connector_radius,0,0])
cylinder(h = screw_base_height, r=screw_support_base_width/2);
translate([screw_holes_radius,0,0]) cylinder(h = tower_height, r=screw_holes_diameter/2, center = true, $fn=100);

}

difference() {
translate([-screw_holes_connector_radius,0,0])
cylinder(h = screw_base_height, r=screw_support_base_width/2);
translate([-screw_holes_radius,0,0]) cylinder(h = tower_height, r=screw_holes_diameter/2, center = true, $fn=100);

}

difference() {
translate([0,0,base_height ])
cylinder(h = tower_grove_height, r=groove_size/2);

cylinder (h = tower_height+1, r=motor_size/2, center = true, $fn=100);
}

}

example001();

string = motor_size +(motor_hole_modifier_percentage*.1);
echo ("<p> Actual part inner diameter" ,string , "<br><br> Motor diameter", motor_size , "</p>");

```


[User]
Hey, I'm working on a project to create personalized tools for people with diabetes, and I could really use your help with some OpenSCAD designs.

Specifically, I'm trying to make a better container for dextrose tablets. When someone's blood sugar drops too low, they need to get dextrose into their system *fast*, and fumbling with packaging is a real pain. I'd like to design a dispenser that allows them to quickly get at the tablets without having to open the original packet.

My idea is for a cylindrical container, probably in two parts that slide together, with a hole or some other kind of opening that dispenses one or two tablets at a time, and then a cap on the top. The container should have a rounded shape so that it doesn't get caught in pockets etc, and it should be small enough to fit in a pocket.

I'm imagining two parts, a bottom and top. The top should have the dispensing mechanism, with a small opening for the tablets, and a cap that can close the opening. The bottom part should be a hollow cylinder that holds the tablets. The two parts should fit together and slide, allowing us to open or close the dispensing mechanism. The connection between the parts needs to be snug but still allow the pieces to move.

I need the following to be parametric:

*   The overall height of the container
*   The diameter of the cylinder
*   The thickness of the walls
*   A "smooth" parameter which determines how smooth the cylinder is (number of faces for rounding)
*   How far the two parts of the cylinder slide
*   The end cap thickness

I'm thinking we could also have separate modules for the top and bottom of the dispenser, and also a way of making the whole dispenser all at once. That would be very helpful.

Can you create an OpenSCAD design for this? I don't have any libraries that I specifically need included. Thanks in advance!

[Assistant]
SuikerDispencer.scad:
```
height = 80;
diameter = 22;
thickness = 3;
smooth = 360; // Number of facets of rounding cylinder
slideSpace = 0.1;
endCapThickness = 2;

part = "first"; // [first:Top Only,second:Bottom Only,both:Top and Bottom]
print_part();

module print_part() {
	if (part == "first") {
		top(height, diameter/2, thickness, center = false);
	} else if (part == "second") {
		bottom(height, diameter/2, thickness, center = false);
	} else if (part == "both") {
		tube(height, diameter/2, thickness, center = false);
	} else {
		tube(height, diameter/2, thickness, center = false);
	}
}

// wall is wall thickness
module tube(heightTube, radius, wall, center = false) {

top(heightTube, radius, wall, center = false);
bottom(heightTube, radius, wall, center = false);
}

module top(heightTube, radius, wall, center = false){
union(){
difference() {
    cylinder(h=heightTube, r=radius, center=center, $fn=smooth);
    cylinder(h=heightTube, r=radius-wall, center=center, $fn=smooth);

 translate([-(diameter/2-2), 0, 0])
 cube([diameter-4, wall-1, height]);

 translate([-(diameter/2)+wall/1.5, wall/2.5, 0])
 cylinder(h=heightTube, r=wall/2.5, center=center, $fn=smooth);

 translate([+(diameter/2)-wall/1.5, wall/2.5, 0])
 cylinder(h=heightTube, r=wall/2.5, center=center, $fn=smooth);

    translate([-(diameter/2), 0, 0])
    cube([diameter, radius, height]); // 1 = spatie tussen 2 delen

  }
union(){
 translate([-(diameter/2)+(wall/1.5+slideSpace), wall/2.5-slideSpace, 0])
 cylinder(h=heightTube, r=wall/2.5-slideSpace, center=center, $fn=smooth);
 translate([-(diameter/2)+(wall/1.67), 0, 0])
 cube([wall/2.5, 1, height]);
}

union(){
 translate([+(diameter/2)-(wall/1.5+slideSpace), wall/2.5-slideSpace, 0])
 cylinder(h=heightTube, r=wall/2.5-slideSpace, center=center, $fn=smooth);
 translate([+(diameter/2)-(wall), 0, 0])
 cube([wall/2.5, 1, height]);
}

cylinder(h=endCapThickness, r=radius-wall, center=center, $fn=smooth);

}
}

module bottom(heightTube, radius, wall, center = false){

union(){
difference() {
    cylinder(h=heightTube, r=radius, center=center, $fn=smooth);
    cylinder(h=heightTube, r=radius-wall, center=center, $fn=smooth);

 translate([-(diameter/2-2), 0, 0])
 cube([diameter-4, wall-1, height]);

 translate([-(diameter/2)+wall/1.5, wall/2.5, 0])
 cylinder(h=heightTube, r=wall/2.5, center=center, $fn=smooth);

 translate([+(diameter/2)-wall/1.5, wall/2.5, 0])
 cylinder(h=heightTube, r=wall/2.5, center=center, $fn=smooth);

  translate([-(diameter/2), -radius, 0])
    cube([diameter, radius , height]); // 1 = spatie tussen 2 delen

  }

translate([0, 0, +heightTube-endCapThickness])
cylinder(h=endCapThickness, r=radius-wall, center=center, $fn=smooth);

}

}

```


[User]
Hi! I'm looking for an OpenSCAD design for a frosted convex cover, kind of like a dome or lens, that I could use over a light. I have a basic idea of what I want it to look like, and some dimensions I'd like to parameterize, but I'm not very experienced in OpenSCAD.

I want the design to have a circular base, with a specified radius `r`. Then, the cover rises from that base to a rounded top, reaching a height `h` from the base. The cover itself will have a specified thickness `thickness`, so it's not solid all the way through, but a hollow shell. Think of it like a hollowed-out dome.

I'd also like to be able to adjust the resolution of the curved surfaces by changing a `res` parameter. I think I'd like to calculate the inner radius `rs` automatically, as the outer radius `r` minus the thickness.

The design should also position itself correctly - I'd like the base of the cover to be at z=0, so I can easily place it on top of other objects. The code in `lens1.scad` gives a good idea of how the positioning and shape should work.

I'm not looking for any fancy features, just a good looking, parametric convex cover. Ideally it should be defined in a single module, maybe called `lens()`, for easy use in other designs. Could you help me with this?

[Assistant]
lens1.scad:
```
// Not an actual lens, useful as frosted cover for a light.
// Hari Wiguna, 2015

// Outer radius of the base of the lens
r = 30;

// Height of the lens (from base to center top of lens)
h = 10;

// How thick is the lens itself
thickness = 1;

// Resolution
res = 50;

$fn = res;
rs = r - thickness;

translate([0,0,-(r-h)])
    lens();

module lens()
{
    difference()
    {
        intersection()
        {
            sphere(r);

            translate([-r,-r,r-h])
                cube([2*r,2*r,h]);
        }

        sphere(rs);
    }
}
```


[User]
Hey, I'm looking to design a customizable drink coaster, and I'd like to use OpenSCAD. I want it to be a basic cylinder, but I'd like to be able to easily control the height, radius, and also add some custom cutouts to it.

Could you help me generate the necessary OpenSCAD code for this? I'd like to define variables for the height and radius, as well as for the parameters of any cutouts I want to add. I'm imagining the cutouts could be circular, square, or maybe even custom shapes using a polygon. I'd also like to control the number and spacing of these cutouts.

Specifically, I'm thinking I'd like to use BOSL2 for its ease of use and modularity, especially for potentially handling those custom shapes in the future. I'm not sure exactly how to implement the cutouts yet, but I want the code to be easily modified to add different patterns later on, ideally.

[Assistant]
Customizable_coaster.scad:
```
$fa=.5; //[]
$fs=.5; //[]
height=5;
radius=80;
difference()
{

union()
{
cylinder(r=radius,h=height);

}

}
```


[User]
Hey, I'm looking to get a customizable card box generator made in OpenSCAD. I've got a basic idea of the shape and parameters I need, but I'm not very familiar with coding in OpenSCAD. I'm envisioning a box that consists of two parts: a lower box and a lid that fits over it.

The key things I'd like to be able to adjust are the height, width, and depth of the box to accommodate different sized card collections. I'd also like a toggle to optionally include a cutout on the lower box to save on printing material. I want to be able to decide if I output the top, bottom, or both as well. When both parts are outputted I want to be able to specify the spacing between the two.

Here's a breakdown of the parameters I think I'll need:

*   `_h`:  Height of the box interior (in millimeters)
*   `_w`: Width of the box interior (in millimeters)
*   `_d`: Depth of the box interior (how thick the pile of cards is, in millimeters)
*   `_hasCutout`: A boolean value or similar (1 for yes, 0 for no) to control the lower box cutout
*   `_include_top`: A boolean value (1 for yes, 0 for no) to render the top/lid of the box
*   `_include_bottom`: A boolean value (1 for yes, 0 for no) to render the bottom of the box
*   `_object_spacing`: Spacing in mm between the top and bottom when both are rendered.

I'm thinking the design of each piece should be constructed as follows:

*   **Lower Box:**
    *   An outer box that represents the total dimensions, plus the wall thickness.
    *   An inner box that represents the interior dimensions, which are a little smaller for fit.
    *   A cylinder centered at the edge of the interior box, perpendicular to the height to remove material.
    *   Cutouts (if `_hasCutout` is true) on both front and back faces. The cutouts can just be rotated squares or something simple.
*   **Lid:**
    *   An outer box that is sized to go over the outer dimensions of the bottom piece.
    *   An inner box that leaves a gap so the lid fits over the lower box.
    *   A cylinder centered at the edge of the interior box, perpendicular to the height to remove material.

Could you generate a parametric OpenSCAD file or files for this? I don't think I need any additional libraries.

[Assistant]
CCGCardBox_v2.1.scad:
```
// export each separately
// box_lid(_h,_w,_d);
// box_lower(_h,_w,_d, _hasCutout);

// define card size
// Ex: MTG with sleeves 93, 67, 44
// height in mm
_h = 93;
// width in mm
_w = 67;
// depth/how thick is the pile of cards in mm
_d = 44 ;
// should the bottom have a cutout?
_hasCutout = 1;  // [1:yes,0:no]
// should this thing render the top/lid of the box
_include_top = 1;  // [1:yes,0:no]
// should this thing render the bottom of the box
_include_bottom = 1;  // [1:yes,0:no]
// when rendering both top and bottom, include spacing between objects (in mm).
_object_spacing = 4;

// cut out will save on printing material and time

//     _________________
//    /                /|
//   /                d |
//  /                /  |
// ------------------   |
// |                |   |
// |                |   |
// |                |   |
// |                h   |
// |                |   |
// |                |   |
// |                |  /
// |                | /
// |                |/
// ---------w--------

module inner_dim(h,w,d)
{
	translate([.6,0,0]) cube([h + 0.1,w,d],center=true);

}

module outer_dim(h,w,d)
{
	cube([h + 1.2,w + 2.4,d + 2.4],center=true);

}
module outer_lid(h,w,d)
{
	h_mod = h;
	w_mod = w + 0.5;
	d_mod = d + 0.5;
	cube([h_mod + 2.4, w_mod + 4.8,d_mod + 4.8],center=true);

}

module cutout(h,w,d)
{
	scale([(h/2),(w/2),1]) rotate([0,0,45]) cube([1,1,5], center=true);

}

module box_lower(h,w,d,hasCutout)
{
	difference()
	{
		outer_dim(h,w,d);
		inner_dim(h,w,d);
		translate([h/2,0,0])
			rotate([90,0,0])
				cylinder(w+40, d=d/1.5, center=true);

		if(hasCutout)
		{
			translate([0,0,d/2]) cutout(h,w,d);
			translate([0,0,-d/2]) cutout(h,w,d);
		}
	}

}

module box_lid(h,w,d)
{
	difference()
	{
		outer_lid(h,w,d);
		translate([.6,0,0]) outer_dim(h + .1,w+.5,d + .5);
		translate([h/2,0,0])
			rotate([90,0,0])
				cylinder(w+40, d=d/1.5, center=true);
	}

}

// control output for customizer
module output_top()
{
    rotate([0,-90,0]) box_lid(_h,_w,_d);
}

module output_bottom()
{
    translate([0,0,-(1.2/2)]) rotate([0,-90,0]) box_lower(_h,_w,_d, _hasCutout);
}

if(_include_top == 1 && _include_bottom == 1)
{
    translate([-(_d/2) - 2 - _object_spacing,0,0]) output_top();
    translate([(_d/2) + 2 + _object_spacing,0,0]) output_bottom();
}
else if(_include_top == 1)
{
    output_top();
}
else
{
    output_bottom();
}

//output_top();

//translate([30,0,0]) rotate([0,-90,0]) box_lid(_h,_w,_d);
//translate([-30,0,0])  rotate([0,-90,0]) box_lower(_h,_w,_d, _hasCutout);

```


[User]
I'm looking to create a flexible beam generator in OpenSCAD, something that lets me easily switch between different beam profiles and add things like pillars.

Here's what I need:

**Core Parameters:**

*   `beam_wall_thickness`: This will define the thickness of the material used for the beam profiles.
*   `beam_width_or_radius`: This parameter should control either the overall width of a square profile or the diameter if it's a round profile.
*   `beam_length`: The overall length of the beam.

**Beam Styles (Toggleable):**

I want to be able to select different beam types by setting a variable for each to 1. If it's 0, that style shouldn't be generated. Here are the styles I need:
*   `i_beam`: Creates a standard I-beam shape.
*   `u_channel`: Creates a U-shaped channel beam.
*    `t_stock`: Creates a T-shaped beam.
*    `rectangle_tube`: Creates a rectangular tube.
*   `cross`: Creates a cross-shaped beam.
*   `cylinder_tube`: Creates a hollow cylindrical beam.
*   `wing`: Creates a beam with wing-like elements extending from its sides. This profile should be created through a combination of cylinders and cubes.

**Pillars:**
*   `pillars`: Sets the number of support pillars attached to the beam. If set to 0, no pillars will be generated.
*   `pillar_width`: Controls the radius of the pillars. The pillars should be centered on the outside of the beam and evenly spaced around it.

I'd like the code to handle the different shapes in a modular way, where each shape is defined in a separate module, and I want to make sure it also works with zero pillars. All beams should be centered on the origin with the length going along the Z axis. I'm also going to want a high $fn value for all of the cylinder calls to make them look round. I'd prefer the code to be in a single file. Could you help me with this?

[Assistant]
Parametric-beam-generator.scad:
```
beam_wall_thickeness = 1;
beam_width_or_radius = 20;
beam_length = 100;
i_beam = 1;
t_stock = 1;
u_channel = 1;
rectangle_tube = 1;
cross = 1;
cylinder_tube = 1;
wing = 1;
pillars = 6;
pillar_width = 2;

//No need to eddit below this line
if (pillars > 0 )

  for ( i = [0 : pillars - 1] )
  {

    translate([beam_width_or_radius / 2, 0, 0 ])
    rotate(a = i * 360 / pillars , v = [0, 0, 1])
    rotate(a = 360 / pillars / 4 , v = [0, 0, 1])
    translate([-beam_width_or_radius / 2, beam_width_or_radius / 8, 0 ])
    cylinder (h = beam_length, r = pillar_width, center = true, $fn = 100);
  }

if (i_beam > 0) {

  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);
  translate([beam_wall_thickeness / 2 + (beam_width_or_radius / 2), 0, 0])
  rotate(a = [0, 0, 90])
  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);
  translate([beam_wall_thickeness / 2 + beam_width_or_radius, 0, 0])
  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);
}

if (u_channel > 0) {

  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);
  translate([beam_wall_thickeness / 2 + beam_width_or_radius / 2, beam_width_or_radius / 2 - beam_wall_thickeness / 2, 0])
  rotate(a = [0, 0, 90])
  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);
  translate([beam_wall_thickeness / 2 + beam_width_or_radius, 0, 0])
  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);
}

if (rectangle_tube > 0) {

  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);
  translate([beam_wall_thickeness / 2 + beam_width_or_radius / 2, beam_width_or_radius / 2 - beam_wall_thickeness / 2, 0])
  rotate(a = [0, 0, 90])
  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);
  translate([beam_wall_thickeness / 2 + beam_width_or_radius, 0, 0])
  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);
  translate([beam_wall_thickeness / 2 + beam_width_or_radius / 2, -beam_width_or_radius / 2 + beam_wall_thickeness / 2, 0])
  rotate(a = [0, 0, 90])
  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);
}

if (cross > 0) {

  translate([beam_wall_thickeness / 2 + beam_width_or_radius / 2, 0, 0])
  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);

  translate([ beam_width_or_radius /2 + beam_wall_thickeness/3, (beam_width_or_radius)/2  - beam_width_or_radius/2 , 0])
  rotate(a = [0, 0, 270])
  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);

}

if (wing > 0) {

  translate([beam_wall_thickeness - beam_wall_thickeness / 8, beam_width_or_radius / 4, 0])
  cube(size = [beam_wall_thickeness, beam_width_or_radius / 2, beam_length], center = true);
  translate([-beam_width_or_radius / 4 * -1 + beam_wall_thickeness, beam_width_or_radius / 2 - beam_wall_thickeness / 2, 0])
  rotate(a = [0, 0, 270])
  cube(size = [beam_wall_thickeness, beam_width_or_radius / 2, beam_length], center = true);
  difference() {
    translate([beam_wall_thickeness / 3 + beam_width_or_radius / 2, 0, 0])
    cylinder (h = beam_length, r = beam_width_or_radius / 2, center = true, $fn = 100);
    translate([beam_wall_thickeness / 2 + beam_width_or_radius / 2, 0, 0])
    rotate ([0, 0, 0]) cylinder (h = beam_length + 2, r = beam_width_or_radius / 2 - beam_wall_thickeness, center = true, $fn = 100);
  }

}

if (cylinder_tube > 0) {

  difference() {
    translate([beam_wall_thickeness / 3 + beam_width_or_radius / 2, 0, 0])
    cylinder (h = beam_length, r = beam_width_or_radius / 2, center = true, $fn = 100);
    translate([beam_wall_thickeness / 2 + beam_width_or_radius / 2, 0, 0])
    rotate ([0, 0, 0]) cylinder (h = beam_length + 2, r = beam_width_or_radius / 2 - beam_wall_thickeness, center = true, $fn = 100);
  }
}

if (t_stock > 0) {
{

  translate([beam_wall_thickeness / 2 + beam_width_or_radius / 2, 0, 0])
  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);

  translate([ beam_width_or_radius /2 + beam_wall_thickeness/2, -beam_width_or_radius/2, 0])
  rotate(a = [0, 0, 270])
  cube(size = [beam_wall_thickeness, beam_width_or_radius, beam_length], center = true);

}
}

```


[User]
I'd like to design a parametric container, similar to the one described in the attached onion.scad file. The main purpose is to hold scallions for regrowth, but I want it to be general enough to be used as an organizer as well.

Here are the key features I want:

1.  **Overall Shape:** The container should have a spherical top portion, a cylindrical middle section with a slot, and a flat base. Basically, it looks like a ball that's been sliced off in the middle and sits on a stand.

2.  **Parametric Dimensions:** I need to be able to control several dimensions. These include:
    *   `radius`: The overall radius of the container (especially important for the top ball).
    *   `thickness`: The wall thickness of the container.
    *   `hole_space`: The spacing between the holes on the top sphere.
    *   `hole_radius`: The radius of the holes on the top sphere.
    *   `slot_radius`: The radius of the cylindrical slot in the middle section.
    *   `slot_hole_radius`: The radius of the holes around the cylindrical slot.
    *   `base_height`: The height of the base.

3.  **Top Sphere (Hat):** The top part should be a hollowed-out half-sphere with evenly spaced holes. These holes should be generated using a `for` loop over an angle and a radius to get a circular pattern.

4.  **Middle Slot:** The middle section should be a hollow cylinder with a slot removed, creating an area for holding scallions (or whatever else). It should also have smaller circular holes around its circumference.

5.  **Base:** The base should be a simple flat disc attached to the bottom of the cylinder.

I'm thinking of having these as a single .scad file with parameters defined at the top. Could you generate the code for that? Please make sure it's a parametric design. I'm familiar with OpenSCAD but new to parametric design. It might also be useful to have some comments in the code to make it easy to understand.

[Assistant]
onion.scad:
```
//$fn=200;

//Container Radius
radius = 70 ;//[50:200]
//Container Thickness
thickness = 2 ; //[1:3]

//space between holes
hole_space = 5; //[4:10]
//the radius of holes
hole_radius = 8; //[6:10]

//the radius of the slot
slot_radius=30; //[30:40]
//the radius of the holes on the slot
slot_hole_radius = 3; //[3:5]

//the height of the base
base_height=5; //[5:10]

module half_ball(size){
	difference(){
		sphere(r=size);
		translate([0,0,-size/0.6])
			cube(size=size*2,center=true);
	}
}

module hat(){
	difference(){
		half_ball(radius);
		half_ball(radius-thickness*2);
		for(r=[hole_space+hole_radius:hole_space+hole_radius*2: radius-hole_radius])
			for(a=[0:90/((r-hole_space-hole_radius)/(hole_space+hole_radius*2)+1):360])
				linear_extrude([0,0,radius]) translate([r*sin(a),r*cos(a)]) circle(hole_radius);
	}
}

module middle_slot(){
	difference(){
		translate([0,0,slot_radius])
		rotate_extrude(convexity = 10)
			translate([radius-0.5,0,0])
				rotate([90,0,0])
					difference(){
						circle(slot_radius);
						circle(slot_radius-thickness*2);
						translate([-slot_radius,0,0]) square(slot_radius*2);
						translate([0,-slot_radius,0]) square(slot_radius*2);
					}
		for(a=[0:18:360])
			translate([(radius-slot_radius/2)*sin(a),(radius-slot_radius/2)*cos(a),0]) cylinder(h=20,r=slot_radius/7);
		cube(radius);
		translate([-radius,-radius,0]) cube(radius);
	}
}

module base(){
	rotate_extrude()
	rotate([90,0,0]){
		square([radius,base_height]);
		translate([radius,base_height/2,0]) circle(base_height/2);
	}

}

translate([0,0,radius/0.6-radius]){
	hat();
	middle_slot();
}
base();

```