[User]
Hey, I'm looking to create a customizable spool holder in OpenSCAD, and I'd love some help. I have a bunch of specific features I need.

First off, I need to control the overall dimensions. I need variables for the `height` and `width` of the holder, in millimeters, which should be adjustable between, say, 100 and 250 mm each. Also, the thickness of each leg of the spool holder needs a variable, `thickness`, adjustable from 5 to 30 mm. There should also be a `wall_width` variable, controlling how wide the walls of the spool holder are, say from 35 to 80 mm.

There needs to be a socket for a rod. So a variable for the `socket_radius` for the rod, adjustable between 1 and 20 mm. I also need a `tolerance` variable, adjustable between 0 and 3 mm, which widens the socket to make sure the rod fits nicely. I'd like a boolean variable, `light_version`, to choose between a "light" version which has some material removed to print faster and save material, and a solid version, so true is for the "light" version and false is for the solid.

Next, I need the ability to include a connecting rod, and to output just the rod, if desired. So a boolean variable, `rod`, to enable this functionality and another one, `rod_only` to indicate whether just the rod should be generated. The rod should have variable `rod_length`, specifying the distance between the legs in mm, which should be adjustable between, say 65 and 160 mm.

I'd also like to add customizable text to the spool holder. A boolean variable, `add_text`, to enable/disable this. A variable, `text_size`, to adjust the size of the text (e.g. 1 to 20). A string variable, `text`, for the actual text. A boolean `embossed_or_engraved`, to choose between embossed and engraved. And if embossed, a variable, `emboss_height` (e.g. 1 to 20), for the height of the text.

Finally, I'd like an option for extra support. A boolean, `extra_support`, and a `support_legs` variable, controlling the height of the legs.

I believe I'll need to use the `write.scad` library to create the text.

Could you generate the necessary OpenSCAD files for this? I think this should cover all the features I'm looking for.

[Assistant]
Customizable_Spool_Holder.scad:
```
//Customizable Spool Holder
//Created by planfab
//www.planfab.eu
//Date 21.09.2014

/*[Shape]*/

//This is the total height of the spool holder in mm.
height=190; //[100:250]

//This is the total width of the spool holder in mm.
width=220; //[100:250]

//This is the thickness of each spool holder leg in mm.
thickness=10; //[5:30]

//This represents the width of the walls in mm.
wall_width=50; //[35:80]

//This is the radius of the rod socket in mm.
socket_radius=8; //[1:20]

//This number widens the rod socket for easiest fit. In mm.
tolerance=1; //[0:3]

light_version="true"; //[true:Yes,false:No]

/*[Connecting Rod]*/

//Do you wish to create a connecting rod?
rod="false"; //[true:Yes,false:No]

//This is the length of the rod, aka the distance between the two legs in mm.
rod_length=100; //[65:160]

//Do you wish to export only the rod?
rod_only="false"; //[true:Yes,false:No]

/*[Text]*/

//Do you wish to add text on the spool holder?
add_text="true"; //[true:Yes,false:No]

//What size should the text be?
text_size=12; //[1:20]

//Insert your text.
text="planfab.eu";

//Do you wish to emboss or engrave your text?
embossed_or_engraved="true"; //[true:Embossed,false:Engraved]

//If you wish to emboss, how tall should the letters be? In mm.
emboss_height=5; //[1:20]

/*[Extra Support]*/

//Do you wish to have extra support?
extra_support="true"; //[true:Yes,false:No]

//How tall do you wish the support legs to be? In mm.
support_legs=10; //[1:50]

/*[Hidden]*/
p=100;
use<write.scad>

if(rod=="true" && rod_only=="true"){}else{
	if (extra_support=="true"){
		difference(){
			support();
				translate([0,0,-thickness*0.1])
				union(){
				for (i=[0:p]){
				translate([sin(180*i/p)*(height-(wall_width)),cos(180*i/p)*((width-(wall_width))/2), 0 ])
				linear_extrude((thickness*1.2)+support_legs)
				scale([0.7,0.7,1])
				circle(wall_width/2);
				}
			}
		}
	}
}

if(rod=="true" && rod_only=="true"){}else{
	if (embossed_or_engraved=="false"){
		if (add_text=="true"){
			difference(){
				if (light_version=="true"){
					difference(){
					spool_holder_side();
					spool_holder_side_mini();
					}
				} else{
					spool_holder_side();
				}
				translate([((height-(wall_width))/4),0,0])
				rotate([0,0,-90])
				write(text,h=text_size,t=thickness*3,bold=1,space=1.2,center=true);
			}
		}else{
			if (light_version=="true"){
					difference(){
					spool_holder_side();
					spool_holder_side_mini();
					}
				} else{
					spool_holder_side();
				}
		}
	}else{
		if (add_text=="true"){
				union(){
					if (light_version=="true"){
						difference(){
						spool_holder_side();
						spool_holder_side_mini();
						}
					} else{
						spool_holder_side();
					}
					translate([((height-(wall_width))/4),0,(thickness/2)+(emboss_height*0.9)])
					rotate([0,0,-90])
					write(text,h=text_size,t=thickness,bold=1,space=1.2,center=true);
				}
			}else{
				if (light_version=="true"){
						difference(){
						spool_holder_side();
						spool_holder_side_mini();
						}
					} else{
						spool_holder_side();
					}
			}
	}
}

if (rod=="true"){
	rod();
	}

module support(){
		translate([sin(0)*(height-(wall_width)),cos(0)*((width-(wall_width))/2),thickness*0.9])
		linear_extrude(support_legs)
		circle(wall_width/2);
		translate([sin(180)*(height-(wall_width)),cos(180)*((width-(wall_width))/2),thickness*0.9])
		linear_extrude(support_legs)
		circle(wall_width/2);
}

module rod(){
	hull(){
			translate([height-(wall_width/2),0,0])
			cylinder(rod_length,socket_radius,socket_radius);
			translate([height-(wall_width),0,0])
			cylinder(rod_length,socket_radius,socket_radius);
		}
}

module spool_holder_side_mini(){
	difference(){
		basic_structure_mini();
		translate([0,0,-thickness*0.1])
		hull(){
			translate([height,0,-thickness*0.1])
			cylinder(thickness*1.5,(socket_radius+tolerance)*1.43,(socket_radius+tolerance)*1.43);
			translate([height-(wall_width*2),0,-thickness*0.1])
			cylinder(thickness*1.5,(socket_radius+tolerance)*1.43,(socket_radius+tolerance)*1.43);
		}
	}
}

module spool_holder_side(){
	difference(){
		basic_structure();
		hull(){
			translate([height,0,-thickness*0.1])
			cylinder(thickness*1.2,socket_radius+tolerance,socket_radius+tolerance);
			translate([height-(wall_width),0,-thickness*0.1])
			cylinder(thickness*1.2,socket_radius+tolerance,socket_radius+tolerance);
		}
	}
}

module basic_structure_mini(){
	translate([0,0,-thickness*0.1])
	union(){
		for (i=[0:p]){
		translate([sin(180*i/p)*(height-(wall_width)),cos(180*i/p)*((width-(wall_width))/2), 0 ])
		linear_extrude(thickness*1.2)
		scale([0.7,0.7,1])
		circle(wall_width/2);
		}
	}
}

module basic_structure(){
	union(){
		for (i=[0:p]){
		translate([sin(180*i/p)*(height-(wall_width)),cos(180*i/p)*((width-(wall_width))/2), 0 ])
		linear_extrude(thickness)
		circle(wall_width/2);
		}
		for (i=[0:p]){
		translate([sin(180*i/p)*(((height-(wall_width))/4)),cos(180*i/p)*((width-(wall_width))/2), 0 ])
		linear_extrude(thickness)
		circle(wall_width/2);
		}
	}
}
```


[User]
I'm looking to create a corner protector that's, well, extra spiky. I have an existing design that does something similar, but I want to make it parametric and easier to adjust. The basic idea is that I have a cube, and then I'm adding three elongated "spikes" that come off the corners. I need to carve out the internal part with cylinders, and I want a solid base.

The existing code I have uses a lot of magic numbers, and I'd really prefer to have things parameterized. So, here's what I'm thinking:

*   **Overall Size:** I need a parameter to control the overall size of the main cube, let's call it `cube_size`.
*   **Spike Length:** There should be a parameter to control how far the spikes extend out, let's call it `spike_length`.
*   **Spike Width:**  We need a parameter for the width of the spikes as well, call it `spike_width`.
*   **Wall Thickness:** I'd like a parameter for the thickness of the wall, `wall_thickness`.
*   **Base Height:**  Finally, I want a parameter for the height of the solid base part, `base_height`, that ensures it's firmly attached.

The spikes should be placed at each corner of the cube, and they should be pointy, not rounded. In the original design I shared the spikes are basically rotated and translated cubes. The design also has internal subtraction cylinders and an intersection to make sure the spikes all meet up nicely. I need the design to not have the internal intersection, but rather for the spikes to generate from a central origin, allowing for varying spike length.

Could you generate an OpenSCAD file for me that does this, with these parameters defined? I don't need to import any other libraries.

[Assistant]
spikycorner.scad:
```

c = 35;
t = 1.5;
s = 3.5;

intersection()
{
rotate( [ 45, -asin( 1 / sqrt( 3 ) ), 0 ] )
difference()
{
	union()
	{
		cube( [ c, c, c ], center = true );
		translate( [ 1, 1, 1 ]*(c/4.5) )
			for ( a = [ 0, 120, 240 ] ) rotate( a, [ 1, 1, 1 ] )
				translate( [ 0, 0, 1 ] * (6.5*c/35) )
					rotate( [ 45, asin( 1 / sqrt( 3 ) ), 0 ] )
						rotate( 45+180, [ -1, 1, 1 ] )
							cube( 11*c/35, center = true );
	}

		rotate( [ 0, 0, 0 ] )
			translate( [ 0, 0, 1 ] * c/2 ) rotate( [ 0, 0, 45 ] )
				translate( [ 1,0, 0 ] * 4.5*c/35 )
					for ( a = [ -1, +1 ] ) translate( (a+0.0)*[0,1,0] * c/2*0.5 )
					cylinder( r = s/2, h = c, center = true );
		rotate( [ 270, 0, 0 ] )
			translate( [ 0, 0, 1 ] * c/2 ) rotate( [ 0, 0, 270+45 ] )
				translate( [ 1,0, 0 ] * 4.5*c/35 )
					for ( a = [ -1, +1 ] ) translate( (a+0.0)*[0,1,0] * c/2*0.5 )				cylinder( r = s/2, h = c, center = true );
		rotate( [ 0, 90, 0 ] )
			translate( [ 0, 0, 1 ] * c/2 ) rotate( [ 0, 0, 90+45 ] )
				translate( [ 1,0, 0 ] * 4.5*c/35 )
					for ( a = [ -1, +1 ] ) translate( (a+0.0)*[0,1,0] * c/2*0.5 )					cylinder( r = s/2, h = c, center = true );

	cube( [ c-t*2, c-t*2, c-t*2 ], center = true );
}
translate( [ 0, 0, c*0.27+100 ] ) cube( 200, center = true );
}

```


[User]
I'd like to create a custom maneuver dial for the X-Wing miniatures game, similar to the one I already have but with the ability to easily change the maneuvers on the dial. I've lost a couple and would like to be able to print some more and easily configure them for different ships.

The dial has three parts: a bottom piece, a top piece, and a pin that goes in between. The bottom piece has a circular base with a post in the center, and the maneuvers are printed around the edge. The top piece has a circular base with a hole in the center, and it fits over the post of the bottom piece, rotating freely. The pin is a simple cylinder that fits into the center post and holds the top and bottom parts together.

I'd like the design to be parametric so I can easily adjust the overall size and the size of the various parts, but it should default to a good working dial size and shape to start with.

Specifically, here are some things that would be great to control as parameters:

*   The outer radius of the dial's base (both top and bottom)
*   The radius of the central post on the bottom piece (both inner and outer)
*   The radius of the hole in the top piece
*   The height of the bottom piece's base and post
*   The height of the top piece's base
*   The height of the pin.
*   A "slop" value for the pin radius to ensure it rotates well and fits in the center hole.
*   The maneuvers around the edge should be text based. I will need to be able to specify 16 maneuvers in total, such as "1L" (1 Left Turn), "2S" (2 Straight), "3R" (3 Right Turn), "1X" (Stop) and so on.
*   Each maneuver text should have an accompanying icon. I would need to specify if the icon is a straight, a stop, a left turn, a right turn, a left bank, right bank, or K turn.

It should use the Spiff Sans font, which was taken from a github repo for the included text.

I need separate STLs for the top, bottom and pin, so it would be useful if the design used a "part" variable and `if` statements, like the given example.

Could you provide an OpenSCAD file or files that accomplishes this? It's okay if it's multiple files. I don't need you to worry about adding any additional libraries at this time or using any included files. I would be happy with just the necessary base files.

[Assistant]
dial.scad:
```
/* dial.scad
 *
 * Copyright (C) Robert B. Ross, 2014
 *
 * This software is released under the Creative Commons
 * Attribution-ShareAlike 4.0 International Public License.
 *
 * Spiff Sans code from Stuart P. Bentley <stuart@testtrack4.com>, downloaded
 * 9/26/2014, released under the Creative Commons - Public Domain Dedication
 * license.
 *
 * TODO:
 *
 */

/* [Global] */

Maneuver_1 = "1L"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_2 = "1R"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_3 = "2L"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_4 = "2l"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_5 = "2S"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_6 = "2r"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_7 = "2R"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_8 = "3L"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_9 = "3l"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_10 = "3S"; //[0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_11 = "3r"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_12 = "3R"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_13 = "3K"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_14 = "4S"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_15 = "5S"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]
Maneuver_16 = "5K"; // [0X: Stop, 1L: 1 Left Turn, 1l: 1 Left Bank, 1S: 1 Straight, 1r: 1 Right Bank, 1R: 1 Right Turn, 1K: 1 K-Turn, 2L: 2 Left Turn, 2l: 2 Left Bank, 2S: 2 Straight, 2r: 2 Right Bank, 2R: 2 Right Turn, 2K: 2 K-Turn, 3L: 3 Left Turn, 3l: 3 Left Bank, 3S: 3 Straight, 3r: 3 Right Bank, 3R: 3 Right Turn, 3K: 3 K-Turn, 4S: 4 Straight, 4K: 4 K-Turn, 5S: 5 Straight, 5K: 5 K-Turn ]

part = "bottom"; // [bottom, top, pin]

/* [Hidden] */

$fn=120;
extRad = 20; // in mm
outerPostRad = 4;
innerPostRad = 2;
myScale=1.1;

/* MakerBot scheme for creating multiple STLs involves a "part" variable. */
if (1) {
    if (part == "bottom")   { scale([myScale,myScale,1]) dialBottom(); }
    else if (part == "top") { scale([myScale,myScale,1]) dialTop(); }
    else if (part == "pin") { scale([myScale,myScale,1]) pin(); }
}
else {
    /* cut-away view */
    difference() {
	union() {
	    dialBottom();
	    rotate([0,0,360/16*8]) translate([0,0,5.4]) rotate([180,0,0]) dialTop();
	    translate([0,0,6.5]) rotate([180,0,0]) pin();
	}
	translate([0,-40,-0.01]) cube([40,40,40], center=false);
    }
}

/******** DIAL MODULES ********/

module dialBottom() {
    difference() {
	union() {
	    cylinder(r=extRad,h=3);
	    cylinder(r=outerPostRad, h=5.2);
	}
	translate([0,0,2]) cylinder(r=innerPostRad, h=7);
	translate([-0.2,0,3]) cube([0.4, outerPostRad+0.01, 7+0.01]);
    }
    translate([0,0,1]) maneuvers();
}

module dialTop() {
    difference() {
	union() {
	    cylinder(r=extRad,h=2.3);
	}
	union() {
	    translate([0,0,-0.01]) cylinder(r=outerPostRad, h=7);
	    translate([0,0,1.2]) cylinder(r=extRad - 2, h=1.21);
	    translate([0,7,-0.01]) linear_extrude(height=3.02)
		polygon(points = [[-2,0], [-4,11], [4,11], [2,0]],
			paths = [[0,1,2,3,0]]);
	}
    }
}

module pin() {
    pinSlop = 0.15; // pin won't actually fit if precisely same diameter as hole.

    cylinder(r=outerPostRad+2, h=1);
    cylinder(r=innerPostRad - pinSlop, h=4);
}

/******** MANEUVER MODULES ********/

module maneuvers() {
    mArray = [ Maneuver_1, Maneuver_2, Maneuver_3, Maneuver_4, Maneuver_5,
	       Maneuver_6, Maneuver_7, Maneuver_8, Maneuver_9, Maneuver_10,
	       Maneuver_11, Maneuver_12, Maneuver_13, Maneuver_14,
	       Maneuver_15, Maneuver_16];
    for (i=[0:15]) {
	rotate([0,0,-1* 360/16*i]) maneuver(mArray[i]);
    }
}

module maneuver(m) {
    // translate([-1.3,9,0]) scale([0.5,0.5,3]) drawtext(m[0]);
    translate([-1.3,8.5,1.5]) scale([0.4,0.4,1]) linear_extrude(height=1.5)
	write(m[0]);

    translate([0,-1,0]) {
	if (m[1] == "L") {
	    mirror([1,0,0]) rightTurnIcon();
	}
	else if (m[1] == "l") {
	    mirror([1,0,0]) rightBankIcon();
	}
	else if (m[1] == "S") {
	    straightIcon();
	}
	else if (m[1] == "X") {
	    stopIcon();
	}
	else if (m[1] == "r") {
	    rightBankIcon();
	}
	else if (m[1] == "R") {
	    rightTurnIcon();
	}
	else if (m[1] == "K") {
	    kTurnIcon();
	}
    }
}

/******** ARROW MODULES ********/

module straightIcon() {
    straightPoints = [[-0.8,0], [-0.8,3], [-1.6,3], [0,4.6],
		      [1.6,3], [0.8,3], [0.8,0]];
    straightPath = [[0,1,2,3,4,5,6,0]];

    translate([0,14,0]) linear_extrude(height=3) {
	polygon(points=straightPoints, paths = straightPath);
    }
}

module stopIcon() {
    stopPoints = [[-0.6,1], [-0.6,2.2], [0.6,2.2], [0.6,1]];
    stopPath   = [[0,1,2,3,0]];

    translate([0,14,0]) linear_extrude(height=3) {
	scale([1.5,1.5,0]) polygon(points=stopPoints, paths=stopPath);
    }
}

module rightTurnIcon() {
    rightTurnPoints = [[-2, 0], [-2,3.6], [0,3.6], [0,4.4],
		       [1.4,3], [0,1.6], [0,2.4], [-0.6,2.4], [-0.6,0]];
    rightTurnPath = [[0,1,2,3,4,5,6,7,8]];

     translate([0.4,14,0]) linear_extrude(height=3) {
	polygon(points=rightTurnPoints, paths=rightTurnPath);
    }
}

module rightBankIcon() {
    rightBankPoints = [[-1.6,0], [-1.6,2.4], [-0.8,3.2], [-1.6,4], [1.2,4],
		       [1.2,1.2], [0.4,2], [-0.2,1.6], [-0.2,0]];
    rightBankPath   = [[0,1,2,3,4,5,6,7,8,0]];

    translate([0.4,14,0]) linear_extrude(height=3) {
	polygon(points=rightBankPoints, paths=rightBankPath);
    }
}

module kTurnIcon() {
    kTurnPoints = [[-0.8,0], [-0.8,4], [2.4,4], [2.4,2], [3.2,2],[2,1.0],
		   [0.8,2], [1.6,2], [1.6,3.2], [0.4,3.2], [0.4,0]];
    kTurnPath   = [[0,1,2,3,4,5,6,7,8,9,10,0]];
    translate([-0.8,14,0]) linear_extrude(height=3) {
	polygon(points=kTurnPoints, paths=kTurnPath);
    }
}

/******** BEGIN SPIFF SANS MODULES ********/

// Spiff Sans
// Author: Stuart P. Bentley <stuart@testtrack4.com>
// Version: 2.1.0

spiffsans = [
  ["",10,[[[0,5],[5,0],[10,5],[5,10],[4.5,8],[5.5,8],[6.75,6.75],[6.75,5.75],[5.5,4.5],[5.5,3.75],[4.5,3.75],[4.5,4.75],[5.75,6],[5.75,6.5],[5.25,7],[4.75,7],[4.25,6.5],[4.25,6],[3.25,6],[3.25,6.75],[4.5,3],[5.5,3],[5.5,2],[4.5,2]],[[0,1,2,3],[4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19],[20,21,22,23]]]],
  ["0",6,[[[5,0],[1,0],[0,2],[0,8],[1,10],[5,10],[6,8],[6,2],[2,8],[2,5],[4,8],[2,2],[4,2],[4,5]],[[0,1,2,3,4,5,6,7],[8,9,10],[11,12,13]]]],
  ["1",5,[[[0,0],[0,2],[2,2],[2,7],[0,7],[2,10],[4,10],[4,2],[5,2],[5,0]],[[0,1,2,3,4,5,6,7,8,9]]]],
  ["2",6,[[[0,0],[0,2],[4,6],[4,8],[2,8],[2,6],[0,6],[0,8],[1,10],[5,10],[6,8],[6,5.5],[2.5,2],[6,2],[6,0]],[[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14]]]],
  ["3",6,[[[1,0],[0,2],[0,4],[2,4],[2,2],[4,2],[4,4],[3,4],[3,6],[4,6],[4,8],[2,8],[2,6],[0,6],[0,8],[1,10],[5,10],[6,8],[6,6],[5.5,5],[6,4],[6,2],[5,0]],[[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22]]]],
  ["4",6,[[[4,0],[4,4],[0,4],[0,10],[2,10],[2,6],[4,6],[4,10],[6,10],[6,0]],[[0,1,2,3,4,5,6,7,8,9]]]],
  ["5",6,[[[0,0],[0,2],[4,2],[4.5,3],[4,4],[0,4],[0,10],[6,10],[6,8],[2,8],[2,6],[5,6],[6,4],[6,2],[5,0]],[[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14]]]],
  ["6",6,[[[1,0],[0,2],[0,8],[1,10],[5,10],[5.5,8],[2,8],[2,6],[5,6],[6,4],[6,2],[5,0],[2,2],[4,2],[4,4],[2,4]],[[0,1,2,3,4,5,6,7,8,9,10,11],[12,13,14,15]]]],
  ["7",5,[[[1,0],[1,3],[3,8],[0,8],[0,10],[5,10],[5,8],[3,3],[3,0]],[[0,1,2,3,4,5,6,7,8]]]],
  ["8",6,[[[1,0],[0,2],[0,4],[0.5,5],[0,6],[0,8],[1,10],[5,10],[6,8],[6,6],[5.5,5],[6,4],[6,2],[5,0],[2,6],[4,6],[4,8],[2,8],[2,2],[4,2],[4,4],[2,4]],[[0,1,2,3,4,5,6,7,8,9,10,11,12,13],[14,15,16,17],[18,19,20,21]]]],
  ["9",6,[[[1,0],[0,2],[4,2],[4,4],[1,4],[0,6],[0,8],[1,10],[5,10],[6,8],[6,2],[5,0],[2,6],[4,6],[4,8],[2,8]],[[0,1,2,3,4,5,6,7,8,9,10,11],[12,13,14,15]]]]
];

module write(string,font=spiffsans,spacing=1,i=0) {
  if (i < len(string)) {
    assign(charindex = search(string[i],font,1)[0])

    // If the character is in the font
    if (charindex != undef) {
      assign(glyph = font[charindex][2])
      if (glyph){
        polygon(points=glyph[0], paths=glyph[1]);
      }
      translate([font[charindex][1] + spacing, 0, 0])
        write(string, font, spacing, i=i+1);
    } else {
      assign(glyph = font[0][2])
      if (glyph){
        polygon(points=glyph[0], paths=glyph[1]);
      }
      translate([font[0][1] + spacing,0,0])
        write(string, font, spacing, i=i+1);
    }
  }
}

/******** END SPIFF SANS MODULES ********/

/*
 * Local variables:
 *  mode: C
 *  c-indent-level: 4
 *  c-basic-offset: 4
 * End:
 *
 * vim: ts=8 sts=4 sw=4 expandtab
 */

```


[User]
Hey, I'm trying to make some snap-on spikes for BlinkyTiles, and I've got a basic idea but need something more flexible and parametric. I'd like the design to generate a pentagonal spike that snaps onto a single edge of a BlinkyTile, similar to the attached 'BlinkyTile_Crystal.scad'.

Here's what I'm looking for:

*   **Core Shape:** It should start with a regular pentagonal prism, which transitions into a cone (or a truncated cone) with its point on the Z axis.
*   **Parametric Height:** I'd like to be able to control the total height of the spike (prism plus cone part), as well as the height of the prism part (the "clip length"). The remaining height will be the cone section.
*   **Parametric Wall Thickness:**  The prism and cone should be hollow, with a user-defined wall thickness. This needs to be easy to adjust, and the math needs to be correct for the hollow part.
*   **Snap-Fit Mechanism:** There should be a snap-fit mechanism along one edge of the pentagonal prism. This is probably done with a series of cubes, extending out beyond the pentagon's edge. I would like the length of these cubes and their offset to be adjustable.
*   **Print Tolerance:** I'd like to incorporate a parameter to adjust for printer tolerances, and it should be applied to the snap-fit cubes.
*   **BlinkyTile Dimensions:** I'll provide the base pentagon radius dimension and clip length, which matches that of a BlinkyTile. This should be separate constants, so I can easily reuse the generator for other modules.
*   **No Libraries** I am not using any libraries like MCAD or BOSL.

Could you generate an OpenSCAD file (or files) that can handle this? I would like it to be well commented and easy to use. Thanks!

[Assistant]
BlinkyTile_Crystal.scad:
```
/*
OpenSCAD sketch to generate snap-fit spikes for BlinkyTiles!
Coded by Ben Rockhold in Sept 2014
No rights reserved.

*/

/* [Parameters] */
// This makes the cone taller! Note; values smaller than ~30 may not be printable.
CrystalHeight = 50;
// Radius of the cone point, just in case you don't want a cone.
ConePoint = 0.1;
// This is the wall thickness of the cone -- note, my math is broken.
WallThickness = 0.8;
// Used to tune the snap-fit
PrintTolerance = 0.1;

/* [Tile Constants] */
// Probably should not change these, but here they are.
// The cylinder needs to become defined by the tangents of a regular pentagon that is ~30.9mm to a side
PentaRadius = 21.2;
ClipLength = 1.67*2;
LegWidth = 5;

difference(){
	rotate([0,0,90])union(){
		cylinder(r=PentaRadius,h=ClipLength,$fn=5);
		translate([0,0,ClipLength])
			cylinder(r1=PentaRadius,r2=ConePoint,h=CrystalHeight,$fn=5);
	}
	// shelling the cylinder; vertical translation used for wall thickness -- yes, I know...
	rotate([0,0,90]){
		translate([0,0,-0.1])cylinder(r=PentaRadius-WallThickness,h=ClipLength+0.5,$fn=5);
		translate([0,0,ClipLength-WallThickness])
			cylinder(r1=PentaRadius-WallThickness,r2=ConePoint,h=CrystalHeight,$fn=5);
	}
	for(i=[1:5]){
		rotate([0,0,i*(360/5)])
			translate([-LegWidth/2,0,-0.1])
				cube([LegWidth+PrintTolerance,PentaRadius*2,ClipLength+0.1]);
	}
}
//%cylinder(r=PentaRadius,h=5,$fn=50);
```


[User]
Hey, I'm looking to design a trophy plaque for a startup weekend event. I've got some specific requirements and want it to be parametric so I can easily customize it for future events.

Basically, I need a rectangular plaque with text on it. The plaque should have angled cutouts on the bottom, like a trapezoid, to fit into a beaker. The plaque itself should have a main part and letters that can be printed separately, allowing for dual-extruder printing with different colors for the base and the letters.

Here are the details:

*   **Overall Shape:** Rectangular plaque with dimensions controlled by parameters for width, height, and depth.
*   **Bottom Cutouts:** Angled cutouts on the bottom edges of the plaque to make it fit inside a beaker. These should be parametric for the angle and height of the cut.
*  **Text:** There should be two lines of text on the plaque's face. Each line of text should be customizable in terms of text content, font size, letter spacing, font and vertical position.
*   **Dual Extrusion:** I need an option to generate a file with just the plaque's base and a separate file with the letters on top of the plaque face.
*  **Font:** I want to be able to use different font files in .dxf format. The font files will be stored in a subdirectory "write/". The system should use the "write/Write.scad" file for writing text to 3D shapes.
*   **User Interface:** The parameters should be displayed clearly in the OpenSCAD customizer. I should be able to choose whether to generate the full plaque, only the letters, or only the base.

I'm using the "write/Write.scad" library to generate the text from dxf files.

The parameters should include:

*   `part`: A dropdown menu to select "Full Plaque", "Letters Only", or "Base Only".
*   `typeface`: A dropdown menu to select which font (e.g. orbitron, Letters, braille, knewave).
*   `top_line_text`: Text for the top line.
*   `top_font_size`: Font size for the top line.
*   `top_font_space`: Letter spacing for the top line.
*   `bot_line_text`: Text for the bottom line.
*   `bot_font_size`: Font size for the bottom line.
*   `bot_font_space`: Letter spacing for the bottom line.
*   `width`: Overall plaque width.
*   `height`: Overall plaque height.
*   `depth`: Plaque thickness.
* `p_top`: Top trapezoid width to fit inside of beaker

Could you please generate the OpenSCAD files for this? I'm anticipating at least two files: the primary SCAD file and the `write/Write.scad` library.

[Assistant]
Trophy_Blockv2.scad:
```
use<write/Write.scad>;

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

/* [Text] */

// Which one would you like to see?
part = "first"; // [first:Full Plaque,second:Letters Only,third:Base Only]

//(Select a font)
typeface = "orbitron"; // [orbitron, Letters, braille, knewave]

top_line_text = "Best Overall";
top_font_size=7; //[1:10]
//(letter spacing)
top_font_space=1;

bot_line_text = "Portland Startup Weekend";
bot_font_size=5; //[1:10]
//(letter spacing)
bot_font_space=1;

/* [Hidden] */
$fn=100;
//Top trapezoid width to fit inside of beaker
p_top=76;
//Overall plaque height
height=20;
//Overall plaque width
width=96;
// plaque thickness
depth=2;
//Cube dimensions
dim=[width, height, depth];

print_part();
module print_part() {
	if (part == "second") {
		gen_text(dim);
	} else if (part == "third") {
		gen_base(dim);
	} else {
		gen_base(dim);
		gen_text(dim);
	}
}

module gen_base(p=[0,0,0]) {
	difference() {
		cube(p, center=true);
		translate([width/2,-height/2,-depth*2]) {rotate([0,0,25]) {cube(height+10);}}
		translate([-width/2,-height/2,-depth*2]) {rotate([0,0,65]) {cube(height+10);}}
	}
}

module gen_text(p=[0,0,0]){
	dafont=str("write/", typeface, ".dxf");
	echo(dafont);
	color("blue") {writecube(top_line_text,[0,0,0],p,face="top", t=3, up=5, font=dafont, h=top_font_size, space=top_font_space);}
	color("red") {writecube(bot_line_text,[0,0,0],p,face="top", t=4, down=5, font=dafont, h=bot_font_size, space=bot_font_space);}
}

```


[User]
Hey, I'm looking to create a parametric rigged dice using OpenSCAD, and I'd like your help! I've seen some designs online, but I want one that's highly customizable. Here's what I'm thinking:

First, the basic cube should be defined by a side length parameter, let's call it `l`. I'd also like to control the wall thickness, `ep`. The key to the rigging is a 'crookery' factor, `f`, ranging from 0 to 100, where 0 is an unrigged dice, and 100 is very rigged. I need to be able to select which face is rigged, `rigged` (1 to 6), and I'd like an optional cut-away for viewing the inside, controlled by `cut` (0 or 1).

For the dots, I want their size to be based on `l`, maybe as a default, `dot = l / 10`, but I would like the `dot` to be a variable I can override. Also, I'll need to control how spread out they are with `ecart`, which is a multiplier on the dot radius, something around 2 to 3, and how deep the dots are, `dot_depth`. I'd prefer that to be at least 0.5mm but let me specify it. Finally, I need a parameter to control corner rounding, `arrondi`, where 1 is a perfect cube, 0.5 is closer to a dotless sphere, and something like 0.8 seems to be a sweet spot but can be changed.

I'll be doing this with OpenSCAD. I don't have any specific libraries in mind, so go with whatever you think is best. Make sure that all the parameters mentioned above can be set by me.

[Assistant]
rigged_dice.scad:
```
//ridge length (mm)
l=100;
//wall thickness
ep=1;
//trickery  (0-100) : how much will the dice be rigged
f=75;
//face that will likely show up (1-6)
rigged=6;
//cut to view inside (0=no,1=yes)
cut=1;
//dot size (defaults to l/10)
dot=l/10;
//dot spread (dot radius multiplier, keep this about 2 to 3)
ecart=2.5;
//dot depth
dot_depth=0.1;
//round corners (1=cube,0.5=dotless sphere, sweet spot around 0.8)
arrondi=0.8;

$fa=10;
$fs=0.1;

il=l-ep*2;

roll=[
	[0,0,0], 	//1
	[0,90,0],	//2
	[90,0,0],	//3
	[-90,0,0],	//4
	[0,-90,0],	//5
	[0,180,0]	//6
];

intersection() {  //round corners

difference() {   //punch holes

	difference(){ //cut to see through (if cut=1)

		difference(){ //make the dice hollow
			cube([l,l,l],center=true);
			difference() // f=0 removes sphere, f=100 removes hemisphere
				{sphere(r=il/2,center=true);
				translate([0,0,-(ep+il)*(0.5+(100-f)*0.005)])cube([l,l,l],center=true);
				}
			}
		translate([0,0,-l/1.9]) cube([cut*l/1.9,cut*l/1.9,cut*l*2.1]);
	}

	rotate(roll[rigged-1]) { //roll the dice to put rigged face upward
			//--------- dots -----------------
			translate([0,0,l/2-dot_depth])cylinder(h = l,r=dot);  	//1

			rotate([0,-90,0])
				translate([0,0,l/2-dot_depth]) {	               //2
				translate([-dot*ecart,-dot*ecart,0]) cylinder(h = l,r=dot);
				translate([dot*ecart,dot*ecart,0]) cylinder(h = l,r=dot);
				}

			rotate([-90,0,0])
			translate([0,0,l/2-dot_depth]) {	               //3
				cylinder(h = l,r=dot);
				translate([-dot*ecart,-dot*ecart,0]) cylinder(h = l,r=dot);
				translate([dot*ecart,dot*ecart,0]) cylinder(h = l,r=dot);
				}

			rotate([90,0,0])
			translate([0,0,l/2-dot_depth]) {	               //4
				translate([-dot*ecart,-dot*ecart,0]) cylinder(h = l,r=dot);
				translate([dot*ecart,dot*ecart,0]) cylinder(h = l,r=dot);
				translate([-dot*ecart,dot*ecart,0]) cylinder(h = l,r=dot);
				translate([dot*ecart,-dot*ecart,0]) cylinder(h = l,r=dot);
				}

			rotate([0,90,0])
			translate([0,0,l/2-dot_depth]) {	               //5
				cylinder(h = l,r=dot);
				translate([-dot*ecart,-dot*ecart,0]) cylinder(h = l,r=dot);
				translate([dot*ecart,dot*ecart,0]) cylinder(h = l,r=dot);
				translate([-dot*ecart,dot*ecart,0]) cylinder(h = l,r=dot);
				translate([dot*ecart,-dot*ecart,0]) cylinder(h = l,r=dot);
				}

			rotate([180,0,0])
			translate([0,0,l/2-dot_depth]) {	               //6
				translate([-dot*ecart,-dot*ecart,0]) cylinder(h = l,r=dot);
				translate([dot*ecart,dot*ecart,0]) cylinder(h = l,r=dot);
				translate([-dot*ecart,dot*ecart,0]) cylinder(h = l,r=dot);
				translate([dot*ecart,-dot*ecart,0]) cylinder(h = l,r=dot);
				translate([dot*ecart,0,0]) cylinder(h = l,r=dot);
				translate([dot*-ecart,0,0]) cylinder(h = l,r=dot);
				}
			}
	}

sphere(r=(3*l)/(2*sqrt(3))*arrondi);
}
```


[User]
Hi, I'm working on a project that needs some ventilation holes, and I found this OpenSCAD script (NJC_Fan_Grid_Multi_Holes_Generator.scad) that generates a pattern of holes in a circular pattern, which seems pretty close to what I need. I'm trying to generate a parameterized object that I can use to cut out these ventilation holes. The script is pretty good, but it doesn't work quite the way I need, and I also want some more flexibility in how the holes are arranged and shaped.

Basically, here's what I'm trying to achieve:

I need to generate a 3D shape that, when used as a difference() operation, will create a series of ventilation holes arranged in concentric rings. I'd like to control several parameters:

1.  **Rotor Diameter:** The overall diameter of the area covered by the hole pattern.
2.  **Hole Shape:**  Instead of only round holes, I want to be able to select from a couple of hole shapes – circles, squares, and possibly even hexagons. I also want to be able to adjust the size of these holes.
3.  **Hole Spacing:** I need to control both the space between holes in the same ring and the spacing between rings, independently. So, I need an "intra-ring spacing" parameter and an "inter-ring spacing" parameter.  It'd be great if I could specify these spacings as either a proportion of the hole size (like the original script did) or in absolute millimeters.
4. **Hole Pattern:**  I'd like an option to not just create circles in a complete circle, but also to generate a pattern along an arc. So, a parameter should be added to define an `angle_start` and `angle_end`.
5. **Height:** The height (or depth) of the holes.

So, I'd like to be able to generate this hole pattern in OpenSCAD, using a module or function. I need you to design the necessary SCAD files. Can you help me with that? I expect that a single SCAD file will be sufficient for this.

[Assistant]
NJC_Fan_Grid_Multi_Holes_Generator.scad:
```
// How large is the fan rotor ? (mm)
RotorDiameter=38;
// How large should each hole be ? (mm)
HolesDiameter=4;
// How much space should be left between each hole, proportionally to the hole size ?
HolesRingsSpacingFraction = 0.4; // [0.1:4.0]
// The height of the generated solids (mm)
Height = 10;
// The number of faces of each hole outer perimeter
Resoultion=20;// [3:100]

// VARIABLES INITIALIZATION
echo("RotorDiameter=",RotorDiameter);
echo("HolesDiameter=",HolesDiameter);
echo("Height=",Height);
echo("Resoultion=",Resoultion);

HolesBoundingBox = HolesDiameter*(1+HolesRingsSpacingFraction);
echo("HolesBoundingBox=",HolesBoundingBox);
NumberOfRings = RotorDiameter / HolesBoundingBox;
echo("NumberOfRings=",NumberOfRings);

OuterRadius = RotorDiameter/2;
echo("OuterRadius=",OuterRadius);

RingRadiusStep = HolesBoundingBox;
echo("RingRadiusStep=",RingRadiusStep);

difference()
{
 for (i=[0:1:NumberOfRings/2])
 {
  difference()
  {
   for(j=[0:360/((i*HolesBoundingBox*6/HolesBoundingBox)):360])
   {
    translate([sin(j)*(i*HolesBoundingBox),cos(j)*(i*HolesBoundingBox),0])cylinder(h=Height,d=HolesDiameter, center = false, $fn=Resoultion);
   }
  }
 }
}
```


[User]
Hi, I'm looking for an OpenSCAD design for a customizable hex grid pattern. I'd like to be able to adjust the overall width and length of the grid, the height of the hex pattern, the border width around the pattern, the radius of the individual hexes, and the width of the border around each hex.

Specifically, I need the following parameters:

*   `width`:  The width of the entire pattern in millimeters. I'd like to be able to set this to values between 10 and 100, so a slider or range input would be great.
*   `length`: The length of the entire pattern in millimeters, also from 10 to 100.
*   `height`: The height of the hex pattern in tenths of millimeters, adjustable from 2 to 200.
*   `border_width`: The width of the border around the entire pattern in tenths of millimeters, from 2 to 100.
*   `hex_radius`: The radius of each individual hex in millimeters, between 1 and 20.
*   `hex_border_width`: The width of the border around each hex, in tenths of millimeters, from 2 to 50.

The core pattern should be a grid of hexagons with a raised border. The entire grid should also have a border that forms a rectangular base. The pattern should be able to handle different values for all of those parameters, and I want the final thing to be a solid object that can be easily 3D printed. The code I've attached includes calculations for `xstep` and `ystep` which are needed for the hexagonal pattern to fit properly.

I'd prefer if the main file is called "hexgrid.scad", and that it doesn't rely on any external libraries, just the core OpenSCAD language. Thanks!

[Assistant]
hexgrid.scad:
```
// Customizable hex pattern
// Created by Kjell Kernen
// Date 22.9.2014

/*[Pattern Parameters]*/
// of the pattern in mm:
width=10;       // [10:100]

// of the pattern in mm:
lenght=20;      // [10:100]

// of the pattern in tens of mm:
height=5;       // [2:200]

// in tens of mm:
border_width=20;// [2:100]

// in mm:
hex_radius=2;   // [1:20]

// in tens of mm:
hex_border_width=5; // [2:50]

/*[Hidden]*/

xborder=(border_width/10<width)?width-border_width/10:0;
yborder=(border_width/10<lenght)?lenght-border_width/10:0;

x=sqrt(3/4*hex_radius*hex_radius);
ystep=2*x;
xstep=3*hex_radius/2;

module hex(x,y)
{
	difference()
	{
		translate([x,y,-height/20])
			cylinder(r=(hex_radius+hex_border_width/20), h=height/10, $fn=6);
		translate([x,y,-height/20])
			cylinder(r=(hex_radius-hex_border_width/20), h=height/10, $fn=6);
	}
}

//Pattern
intersection()
{
	for (xi=[0:xstep:width])
		for(yi=[0:ystep:lenght])
			hex(xi-width/2,((((xi/xstep)%2)==0)?0:ystep/2)+yi-lenght/2);
	translate([-width/2, -lenght/2, -height/20])
		cube([width,lenght,height/10]);
}

// Frame
difference()
{
	translate([-width/2, -lenght/2, -height/20])
		cube([width,lenght,height/10]);
	translate([-xborder/2, -yborder/2, -(height/20+0.1)])
		cube([xborder,yborder,height/10+0.2]);
}

```


[User]
I need a parametric OpenSCAD design for testing the bridging capabilities of a 3D printer.

The design should consist of a central hub with a series of bridges extending outwards. The bridges should increase in length progressively and should each be slightly higher than the previous one.

Here are the specific parameters I want to control:

*   **`min_bridge_length`**: The length of the shortest bridge.
*   **`max_bridge_length`**: The length of the longest bridge.
*   **`bridge_increment`**: The difference in length between consecutive bridges.
*   **`bridge_width`**: The width of each bridge.
*   **`bridge_height`**: The height/thickness of each bridge.
*   **`bridge_z_gap`**: The vertical distance between each bridge.
*   **`hub_diameter`**: The diameter of the central cylindrical hub.
*   **`bridge_angle`**: The angle between each bridge.
*   **`wall_thickness`**: The thickness of the vertical walls connecting the bridges.

The bridges should emanate from the central hub, and at the end of each bridge there should be a small connection going up to the following bridge. Also, there should be a cylindrical void running through the center of the hub, for ease of removal/printing.

I'd also like to make sure that the code is using the BOSL2 library if possible. I think it has some really nice features and I would love to see how it would handle this design. Please use BOSL2 for as much of the design as possible. I'm interested in features like `linear_extrude` or other ways to make walls.

[Assistant]
bridging_test_v1-3.scad:
```
// min bridge
// max bridge
// bridge increments

//small, 10-100:5
//large, 10-200:10

/*[Bridges]*/

// length of the shortest bridge
min_bridge_length = 10;

// length of the longest bridge
max_bridge_length = 100;

// difference between subsequent bridges
bridge_increment = 5;

// width of each bridge
bridge_width = 3;

// layer height of each bridge
bridge_height = 0.8;

// height of each bridge above the previous bridge
bridge_z_gap = 0.2;

/*[Shape]*/
// diameter of the central hub
hub_diameter = 24;

// angle between each bridge
bridge_angle = 18;

// thickness of the vertical walls
wall_thickness = 1;

// ignore
spiralResolution = 12*1; // ignore
spiralIncrement = 1/spiralResolution; // ignore
numBridges = ceil((max_bridge_length - min_bridge_length) / bridge_increment) + 1;
maxAngle = bridge_angle * (numBridges-1);
eps = 0.1 * 1; // ignore
$fn = 90 * 1; // ignore

function spiralOffset(angle) = min_bridge_length + angle/maxAngle * (max_bridge_length - min_bridge_length);
function extensionAngle(length) = asin((bridge_width*0.5)/length);

module bridgeTest() {
	tubeHeight = numBridges * (bridge_height + bridge_z_gap);
	heightStride = bridge_height + bridge_z_gap;

	difference() {
		union() {
			cylinder(r = hub_diameter/2, h = tubeHeight);

			for (i=[0:numBridges-1]) {
				assign (length = spiralOffset(i*bridge_angle) + wall_thickness * 2,
						 height = i * heightStride) {
					hull()
					rotate([0, 0, i*bridge_angle]) {
						translate([hub_diameter/2 - wall_thickness, 0, height + bridge_z_gap]) {
							translate([0, -bridge_width/2, 0])
							cube([length , bridge_width, bridge_height], center=false);
							if (i < numBridges-1) {
								translate([0, bridge_width/2 - eps, 0]) {
									cube([spiralOffset(i*bridge_angle + extensionAngle(length)) + wall_thickness, eps, bridge_height], center=false); // only an approximation
								}
							}
						}
					}
					if (i < numBridges-1) {
						for (f=[0 : spiralResolution-1]) {
							assign(frac=f/spiralResolution,
									top = height + bridge_height + bridge_z_gap,
									end = i == numBridges-1 && f == spiralResolution-1,
									angle = i*bridge_angle + bridge_angle * f / spiralResolution
 ) {
								hull()
								rotate([0, 0, angle]) {
									translate([hub_diameter/2 + spiralOffset(angle), -bridge_width/2, 0]) {
										cube([wall_thickness, wall_thickness, top + heightStride * frac], center=false);
									}
									rotate([0, 0, bridge_angle * spiralIncrement])
									translate([hub_diameter/2 + spiralOffset(angle + bridge_angle * spiralIncrement), -bridge_width/2, 0]) {
										cube([wall_thickness, wall_thickness, top + heightStride * (frac + spiralIncrement)], center=false);
									}
								}
							}
						}
					} else {
						rotate([0, 0, i*bridge_angle]) {
							translate([length + hub_diameter/2 - wall_thickness*2, -bridge_width/2, 0]) {
								cube([wall_thickness, bridge_width, height + heightStride], center=false);
							}
						}
					}
				}
			}
		}
		cylinder(r=hub_diameter/2 - wall_thickness, h=tubeHeight*3, center=true);
	}

}

bridgeTest();
```


[User]
I'm looking to create a parametric OpenSCAD design for calibrating 3D printer dimensions using a standard coin, specifically a nickel. I need a design that includes a "slug" – a solid cylindrical object that matches the dimensions of a nickel, allowing me to measure it with calipers and verify the printer's accuracy. Also, the design should include some flat plates that the slug can be compared with in both X and Y axis. A few things I'd like to have:

*   The coin diameter and thickness should be parameters, so I can adjust them if needed (say, for a different coin). I can give you those values, but they should be variables. Assume the default parameters will fit either a US or Canadian nickel.
*   The slug should have a small notch on one edge (in the +X direction) to help with orientation.
*   There should be three flat plates: one flat on the build surface, one "standing" in the X axis and one "standing" in the Y axis.
*   Each plate should have the ability to have notches added in the +X direction.
*   The plates should all have a cutout for the coin slug to be checked against.
*   The plates should also have some cutouts on the edges, just for decoration and to give more information about the printer's dimensional accuracy.

I'd like to see a rendering of the slug and plates as well, to ensure everything looks right. I'd prefer if the code was well-commented, so I can understand how the dimensions and shapes are built. If you include any libraries, please mention which ones you're using.

[Assistant]
nickel_3d.scad:
```
// coin calibration thing

// remixed from "A Better Nickel Calibration Test" by "John" of thingiverse

// diameter of cdn nickel(21.2), USA(21.21)
coin = 21.2;

// thickness of cdn nickel(1.76), USA(1.95)
th = 1.76;

// Make a slug to measure with your calipers.
// You do have calipers don't you?
// or just match it up to your coin
// added small nothch in front X axis edge.
translate([0, -1.5 * coin, 0])
	difference() {
		cylinder(r = coin / 2, h = th);
		translate([coin * 0.45, 0, th / 2])
			cylinder(r = coin / 10, h = th);
	}

module plate() {
	linear_extrude(height=th) {
		difference() {
			intersection() {
				circle(r = coin * 2.1);
				square(coin * 1.75);
			}
			translate([coin, coin])
				circle(r = coin / 2);
			translate([coin / 5, coin / 2])
				square([th * 2, coin]);
			translate([coin / 2, coin / 5])
				square([coin, th * 2]);
		}
	}
}

$fs = .5;
$fa = 3;

// add notch on bottom plate in X direction
difference() {
	plate();
	translate([coin * 1.73, th * 4, th / 2])
		cylinder(r = coin / 10, h = th);
}
translate([0, th]) rotate([90, 0, 0]) plate();
translate([th, 0]) rotate([0, -90, 0]) plate();

// original
//translate([0, 40, 0])
//	import("XYZ_nickel_Calibration_2.stl");

```


[User]
Hey, I'm looking to create a custom, organic-looking vase using OpenSCAD, and I came across this really neat design that uses a combination of Bezier curves and trigonometric functions to generate the overall shape and surface texture. It has controls for height, base/waist/neck/top diameters, ruffle count/depth/twist, and a smoothing option.

Specifically, I'd love a parametric OpenSCAD file (or files) that allows me to control the following:

*   **Overall Dimensions:**
    *   `height`: The total height of the vase in millimeters (let's say with a range of 10-100mm).
    *   `base_diameter`: The diameter of the vase at its base in mm (10-100mm).
    *   `waist_diameter`: The diameter at 1/3 of the vase's height (10-100mm).
    *   `neck_diameter`: The diameter at 2/3 of the vase's height (10-100mm).
    *   `top_diameter`: The diameter at the top of the vase (10-100mm).
    *   A simple toggle `display_diameters` to show reference cylinders at the base/waist/neck/top heights and diameters for easier visual tweaking.

*   **Surface Texture (Ruffles):**
    *   `ruffle_count`: The number of "ruffles" or ridges around the vase's circumference (2-12).
    *   `ruffle_depth`: The maximum depth of these ruffles, in mm (1-8mm).
    *   `twist_cycles`: The number of times the ruffles rotate along the height of the vase (0-6).
    *  `twist_max`: The maximum angle (in degrees) that the ruffle orientation rotates (can be negative for reverse twist) (-90 to 90 degrees).

*  **Surface Smoothing**
    *   `smoothing_cycles`: The number of times the ruffles transition from fully textured to completely smooth, as you go from bottom to top of the vase (0-6 cycles).
    *  `smoothing_start`: Vertical position where smoothing cycles begin (%) (0-100)

*   **Resolution:**
    *   `vertical_resolution`:  Number of horizontal layers in the vase (e.g., 60)
    *   `radial_resolution`: Number of wedges in each layer (e.g., 96)

The base shape should be determined by a Bezier curve based on the base/waist/neck/top diameters. The surface texture should be created by combining a sine function for the ruffled ridges with the `twist` function for their horizontal rotation and a cosine for the vertical smoothing. I'm thinking I need some functions for the bezier curves, radius calculations, twist, ruffling and smoothing as well. Each layer should be composed of a number of these "wedge" shapes that smoothly blend into each other. I'd like this to produce solid models intended for 3D printing without infill.

I don't need any specific libraries, just good old vanilla OpenSCAD should be sufficient.

[Assistant]
parametric-organic-vase.scad:
```
/*
 * Parametric Organic Vase
 * Designed by Jim DeVona, 2014
 *
 * Creative Commons Attribution-ShareAlike 4.0 International License.
 * http://creativecommons.org/licenses/by-sa/4.0/
 */

// preview[tilt:side]

/* [Dimensions] */

// (mm)
height = 60; // [10:100]

// (mm)
base_diameter = 42; // [10:100]

// Diameter at 1/3 height. (mm)
waist_diameter = 64; // [10:100]

// Diameter at 2/3 height. (mm)
neck_diameter = 50; // [10:100]

// (mm)
top_diameter = 48; // [10:100]

// Show guides representing reference dimensions given above.
display_diameters = 0; // [0:No, 1:Yes]

/* [Texture] */

// Number of ruffled ridges on surface.
ruffle_count = 6; // [2:12]

// Maximum inset/offset of each ruffle. (mm)
ruffle_depth = 6; // [1:8]

// Number of alternating twists applied to ruffles.
twist_cycles = 3; // [0:6]

// Extent of each twist. (degrees)
twist_max = 40; // [-90:90]

// Number of transitions from ruffled to smooth surfaces.
smoothing_cycles = 2; // [0:6]

// Adjust vertical position of smoothing transitions. (%)
smoothing_start = 50; // [0:100]

/* [Resolution] */

// Number of layers comprising vase.
vertical_resolution = 60;

// Number of wedges comprising each layer.
radial_resolution = 96;

/* [Hidden] */

base_radius = base_diameter / 2;
waist_radius = waist_diameter / 2;
neck_radius = neck_diameter / 2;
top_radius = top_diameter / 2;

p0 = base_radius;
p1 = ((-5 * base_radius) + (18 * waist_radius) - ( 9 * neck_radius) + (2 * top_radius)) / 6;
p2 = (( 2 * base_radius) - ( 9 * waist_radius) + (18 * neck_radius) - (5 * top_radius)) / 6;
p3 = top_radius;

ba = p3 - (3 * p2) + (3 * p1) -      p0;
bb =      (3 * p2) - (6 * p1) + (3 * p0);
bc =                 (3 * p1) - (3 * p0);
bd =                                 p0;

// Twist: Returns rotation of layer at ratio height v.
function twist(v) = twist_max * sin(twist_cycles * 0.25 * 360 * v);

// Bezier: Returns reference radius of layer at ratio height v.
function bezier(v) = (ba * pow(v, 3)) + (bb * pow(v, 2)) + (bc * v) + bd;

// Ruffle: Returns offset radially applied to reference radius to form star petals.
function ruffle(v, t) = ruffle_depth * sin((t + twist(v)) * ruffle_count);

// Smoothing: Returns offset vertically applied to reference radius to vary petal depth.
// Return value varies between 0 and 1; 0 means petal fully suppressed; 1 means petal full depth.
function smoothing(v) = 0.5 + (0.5 * cos(smoothing_cycles * 0.5 * 360 * (v + smoothing_start/100)));

// Radius r:
function r(v, t) = bezier(v) + ruffle(v, t) * smoothing(v);

// convert polar rt coordinates to cartesian xy
function x(r, t) = r * cos(t);
function y(r, t) = r * sin(t);

for (v = [0:vertical_resolution - 1]) {
	// height of top and bottom of exterior face, expressed as ratio of full height
	assign(v0 = v / vertical_resolution, v1 = (v + 1) / vertical_resolution) {
		// height of top and bottom exterior face, expressed in output units
		assign(h0 = v0 * height, h1 = v1 * height) {
			for (t = [0:radial_resolution - 1]) {
				// angles to either horizontal side of this exterior face
				assign(t0 = t * 360 / radial_resolution, t1 = (t + 1) * 360 / radial_resolution) {
					// radii from axis to each corner of this exterior face:
					assign(rv0t0 = r(v0, t0), rv0t1 = r(v0, t1), rv1t0 = r(v1, t0), rv1t1 = r(v1, t1)) {
						// OpenSCAD: not quite cool enough to dynamically build a single point array.
						// So, I'ma force feed you like ten thousand separate polyhedron wedges instead.
						polyhedron(
							points = [
								[0, 0, h1],                       // center top
								[0, 0, h0],                       // center bottom
								[x(rv1t0, t0), y(rv1t0, t0), h1], // exterior left top
								[x(rv0t0, t0), y(rv0t0, t0), h0], // exterior left bottom
								[x(rv1t1, t1), y(rv1t1, t1), h1], // exterior right top
								[x(rv0t1, t1), y(rv0t1, t1), h0]  // exterior right bottom
							],
							triangles = [  // clockwise as seen from outside
								[0, 2, 4], // top
								[1, 5, 3], // bottom
								[0, 3, 2], // left top
								[0, 1, 3], // left bottom
								[0, 4, 5], // right top
								[0, 5, 1], // right bottom
								[2, 3, 4], // exterior left
								[5, 4, 3]  // exterior right
							]
						);
					}
				}
			}
		}
	}
}

//# cylinder(d=40, h = height + 2);

module Constraints() {
	translate([0, 0, -0.5]) cylinder(r = base_radius, h = 1);
	translate([0, 0, height / 3 - 0.5]) cylinder(r = waist_radius, h = 1);
	translate([0, 0, 2 * height / 3 - 0.5]) cylinder(r = neck_radius, h = 1);
	translate([0, 0, height - 0.5]) cylinder(r = top_radius, h = 1);
}

if (display_diameters == 1) {
	% Constraints();
}
```


[User]
I need help designing some clips to attach to my shower pipe and provide a base for shelves. I've got a pipe and want to avoid drilling into the wall. I've roughed out a design, but it's a bit clunky, and I'd like a more robust and flexible design. I'd like a parametric OpenSCAD design so I can tweak it. I'll describe the key features and dimensions I'm working with.

Essentially, the design should create a clip that wraps around a shower pipe and then has a strut extending towards the wall. The clip will be a C-shape, and the strut will then connect to the clip and run straight to the wall. There needs to be a flat section at the wall end where a shelf support could be attached.

Here are the parameters I'd like to control:

*   `wd`: The distance from the wall to the pipe (axial distance).
*   `pd`: The diameter of the pipe.
*   `ct`: The thickness of the clip material.
*   `ch`: The height of the clip.
*   `ca`: The clip's aperture angle (the "C" opening).
*   `st`: The thickness of the strut.
*   `sh`: The height of the strut.
*   `sms`: The minimum size of the strut's wall contact area; this parameter also impacts the strut width where it meets the wall.
*   `hole_in_strut`: A value that determines if there's a hole through the strut; 1 for a full hole, 0 for no hole. Values between 0 and 1 should vary the diameter.

I would also like the clip to include small cylindrical nubs on the inner radius at both ends of the 'C' to help with placement and stability.

I think it would be useful to have these parts made from several modules for readability. I don't need any special libraries - just the basic OpenSCAD functions will do.

Also, a few more things:

*   The strut should be centered under the clip, in the vertical axis.
*   The wall contact portion of the strut needs to be flat on the end, making a good base for screwing things to it.
*   Please make sure the design is as robust as possible. For the `hole_in_strut`, I am aware that with small `ch` values, the strut can become weak. Is it possible to have the hole start at some specific percentage of the `ch`? For example, make the hole start at `ch/3`?

Could you create the SCAD file (or files, if it makes sense to modularize it) that meet these requirements?

[Assistant]
shower_thoughts-strut.scad:
```
$fa=15;
$fs=0.2;

//wall distance to pipe (axial)
wd=40;
//pipe diameter
pd=14;
//clip thickness
ct=2;
//clip heigth
ch=15;
//clip apperture
ca=160;
//strut thickness
st=3;
//strut heigh
sh=20;
//strut min size
sms=4;
//should a hole be drilled through the strut (1) or not (0). value > 1 will result in havoc,
//but floats in the 0-1 range will yeld fonctional results.
//for small clip heigth (<10) , it may be better to lower this a bit (for robustness).
hole_in_strut=1;

w1=4*(pd/2+ct);

//wall
//translate([-100,wd,-100]) cube([200,2,200]);

	//--------- clip tuyau -------------------------------------------------------
	difference() {
		cylinder(h=ch,d=pd+ct*2);
		translate([0,0,-1]) linear_extrude(height = ch+2)
			polygon(points=[[0,0],[-w1*cos(90+ca/2),-w1*sin(90+ca/2)],[w1,-w1],[-w1,-w1],[-w1*cos(90-ca/2),-w1*sin(90-ca/2)]]);
		translate([0,0,-100]) cylinder(h=200,d=pd);
		}
	//cylindres au bout du clip
	rotate([0,0,-(180-ca)/2]) translate([(pd+ct)/2,0,0]) cylinder(h=ch,d=ct);
	rotate([0,0,180+(180-ca)/2]) translate([(pd+ct)/2,0,0]) cylinder(h=ch,d=ct);
	//--------- etai  -------------------------------------------------------
	//central strut
	difference() {
		translate([-st/2,pd/1.99,-sh])cube([st,wd-pd/1.99,sh+ch]);
		translate([0,pd/2+ct,-sh]) scale([st*5,wd-pd/2-sms-ct,sh])  rotate([0,90,0])cylinder(r=1,h=st*2,center=true);
		translate([(pd+ct)/-2,0,-sh+0.02]) cube([pd+ct,pd/2+ct,sh]);
		//hole through the strut
		translate([-st,pd/2+ct+(wd-sms-ct-pd/2)*0.44,ch/2]) rotate([90,0,90]) scale([(wd-sms-ct-pd/2)*0.8,ch*0.7,1])cylinder(d=hole_in_strut,h=st*2);
		}

	difference() {
	translate([-st/2-sms,wd-sms,-sh])cube([st+sms*2,sms,sh+ch]);
	translate([st/2+sms,wd-sms,-sh-1]) cylinder(h=sh+ch+2,d=sms*1.99);
	translate([st/-2-sms,wd-sms,-sh-1]) cylinder(h=sh+ch+2,d=sms*1.99);
	}

```


[User]
Hey there! I'm looking to design a parametric vase that can be attached to a metal surface using magnets. I've got some ideas based on an existing design, but I'd love for you to generate a new OpenSCAD file (or multiple files, if it makes sense).

The vase should have a curved profile, controlled by a Bezier curve. The key parameters for the shape should be:

*   **Base diameter:** This sets the width of the base of the vase.
*   **Vase height:** The overall height of the vase.
*   **Waist size:** The diameter of the widest part of the vase, expressed as a percentage of the base diameter.
*   **Neck size:** The diameter of the narrowest part of the vase, expressed as a percentage of the base diameter.
*   **Top size:** The diameter of the opening at the top, expressed as a percentage of the base diameter.
*   **Waist height:** The height of the widest part of the vase, expressed as a percentage of the total vase height.
*   **Neck height:** The height of the narrowest part of the vase, expressed as a percentage of the total vase height.

I'd like to have a few more parameters to control how it is built:

*   **Vertical resolution:** This controls the smoothness of the Bezier curve profile.
*   **Radial resolution:** This controls how smooth the circular cross-sections are.
*   **Wall thickness:** The thickness of the vase walls; set to 0 for a solid vase.

The vase should have embedded holes for magnets. I'd like to be able to specify the:

*   **Magnet diameter:** The diameter of the magnet holes.
*   **Magnet thickness:** The thickness of the magnets.

I'd like the vase to be a half-vase. So, please cut the vase in half, and include code to place the magnet holes. For the magnet holes, please include the hole in the base material, and an additional slightly larger cutout for the magnet to be pressed into. I'd prefer if you didn't use any libraries except for the built in functions of OpenSCAD if that's possible, but if it makes sense to use one go ahead. Thanks!

[Assistant]
Locker_Vase.scad:
```
/* [Magnets] */

// Diameter of magnet hole (about 0.1mm bigger than magnet) (mm)
mag_diameter = 6.5;

// Thickness of magnet (mm)
mag_thick = 2.7;

/* [Bezier Vase] */

// Diameter of base. (mm)
base_diameter = 30; //[0:200]

// Height of vase. (mm)
vase_height = 100; //[0:200]

// Size of waist as percentage of base diameter. Widest part of vase will be at least this wide but may be wider. (%)
waist_size = 140; // [0:200]

// Size of neck as percentage of base diameter. Narrowest part of vase will be at least this narrow but may be narrower. (%)
neck_size = 85; // [0:200]

// Size of opening at top of vase as percentage of base diameter. (%)
top_size = 100; // [0:200]

// Height of waist as percentage of vase height. Should be less than neck height. (%)
waist_height = 40; // [0:100]

// Height of neck as percentage of vase height. Should be greater than waist height. (%)
neck_height = 70; // [0:100]

/* [Resolution] */

// Higher values yield a smoother Bezier curve profile.
vertical_resolution = 90;

// Higher values yield smoother circumferences.
radial_resolution = 60;

// Set to 0 for a solid volume. (mm)
wall_thickness = 2; // [0:10]

/* [Hidden] */

/*
 * So the top, neck, waist, and base dimensions above
 * are used to define points on the profile of the vase.
 * A cubic Bezier curve is fit to pass through all four.
 * Note that the neck and waist are not necessarily the
 * narrowest and widest points, respectively - the curve
 * may have to pass further in or out to pass through them.
 *
 * |---------+    top
 * |       /
 * |     /
 * |----+         neck
 * |      \
 * |         \
 * |           \
 * |------------+ waist
 * |            |
 * |           /
 * |         /
 * |--------+     base
 *
 */

// base
x0 = base_diameter/2;
y0 = 0;

// waist
x1 = x0 * waist_size/100;
y1 = waist_height/100 * vase_height;

// neck
x2 = x0 * neck_size/100;
y2 = neck_height/100 * vase_height;

// mouth
x3 = x0 * top_size/100;
y3 = vase_height;

// Control point coordinates
// https://web.archive.org/web/20131225210855/http://people.sc.fsu.edu/~jburkardt/html/bezier_interpolation.html
p0x = x0;
p0y = y0;
p1x = ((-5 * x0) + (18 * x1) - (9 * x2) + (2 * x3)) / 6;
p1y = ((-5 * y0) + (18 * y1) - (9 * y2) + (2 * y3)) / 6;
p2x = ((2 * x0) - (9 * x1) + (18 * x2) - (5 * x3)) / 6;
p2y = ((2 * y0) - (9 * y1) + (18 * y2) - (5 * y3)) / 6;
p3x = x3;
p3y = y3;

// Bezier curve function coefficients
a = p3x - (3 * p2x) + (3 * p1x) - p0x;
b = (3 * p2x) - (6 * p1x) + (3 * p0x);
c = (3 * p1x) - (3 * p0x);
d = p0x;
e = p3y - (3 * p2y) + (3 * p1y) - p0y;
f = (3 * p2y) - (6 * p1y) + (3 * p0y);
g = (3 * p1y) - (3 * p0y);
h = p0y;

// Bezier curve functions
function bzx(t) = (a * t * t * t) + (b * t * t) + (c * t) + d;
function bzy(t) = (e * t * t * t) + (f * t * t) + (g * t) + h;

difference(){
union() {
	for (i = [0:vertical_resolution-1]) {
		assign(tbot = i / vertical_resolution, ttop = (i + 1) / vertical_resolution) {
			echo(bzy(tbot));
			rotate_extrude($fn=radial_resolution) polygon(points=[
				[wall_thickness > 0 ? bzx(tbot) - wall_thickness : 0, bzy(tbot)],
				[bzx(tbot), bzy(tbot)],
				[bzx(ttop), bzy(ttop)],
				[wall_thickness > 0 ? bzx(ttop) - wall_thickness : 0, bzy(ttop)]
			]);
		translate([-(bzx(tbot)+bzx(ttop))/2+.5,-2,bzy(tbot)]) cube([(bzx(tbot)+bzx(ttop))-1,10,bzy(ttop)-bzy(tbot)]);
		}
	}
	if (wall_thickness > 0) {
		cylinder(h=wall_thickness, r = bzx(0), $fn=radial_resolution);
	}
	// put material for magnet holes
	translate([waist_size*base_diameter/200*.5,2,waist_height])rotate ([90,0,0]) cylinder(h=mag_thick+1, r=(mag_diameter+1)/2, $fn=20);
	translate([-waist_size*base_diameter/200*.5,2,waist_height])rotate ([90,0,0]) cylinder(h=mag_thick+1, r=(mag_diameter+1)/2, $fn=20);
	translate([0,2,vase_height*.9])rotate ([90,0,0]) cylinder(h=mag_thick+1, r=(mag_diameter+1)/2, $fn=20);
	translate([0,2,vase_height*.1])rotate ([90,0,0]) cylinder(h=mag_thick+1, r=(mag_diameter+1)/2, $fn=20);
}

// cut out half of vase
translate ([-105,1,-5]) cube([210,110,210]);

// put holes for magnets
translate([waist_size*base_diameter/200*.5,2,waist_height])rotate ([90,0,0]) cylinder(h=mag_thick, r=mag_diameter/2, $fn=20);
translate([-waist_size*base_diameter/200*.5,2,waist_height])rotate ([90,0,0]) cylinder(h=mag_thick, r=mag_diameter/2, $fn=20);
translate([0,2,vase_height*.9])rotate ([90,0,0]) cylinder(h=mag_thick, r=mag_diameter/2, $fn=20);
translate([0,2,vase_height*.1])rotate ([90,0,0]) cylinder(h=mag_thick, r=mag_diameter/2, $fn=20);
}

```


[User]
Hi there! I'm looking to design a customizable filament holder for my 3D printer, and I'd like to use OpenSCAD to generate the model. I'm hoping you can help me with the design.

Basically, I need a single-print filament holder, meaning it shouldn't require supports. I'd like to have several key parameters that I can adjust to fit different spools and printer setups.

Here's what I have in mind:

1.  **Overall Radius:** I need to be able to set the total radius of the holder (from the center to the outer edge).

2.  **Center Hole Radius:** The center hole that the spool rotates on should also have an adjustable radius.

3.  **Depth:** I need to be able to control the overall depth of the holder.

4.  **Filament Radius:** I'd like to be able to specify the radius of the filament itself (1.75mm or 3mm). This will be used to create some small guide cylinders, I think.

I'm imagining a design where the main part is a cylinder with a center hole, and then there are some supporting arms that connect the center to the outer perimeter. It should be sturdy enough to support a standard spool of filament and allow for smooth rotation.  Also, I need to make sure the design incorporates some small cylinders to guide the filament. I'd like them placed on the arms.  The arms should be arranged evenly and ideally at a minimum of three evenly spaced supports, so maybe three or four total, depending on what looks best.

It would be nice to have a slight recess on the top and bottom to prevent the filament holder from sliding.

I don't have any specific library requirements, so feel free to use whatever you think is best, so long as it's reasonably easy for someone to use without any specialized tools.

I'm excited to see what you come up with! Thanks in advance.

[Assistant]
Fillament_Holder_V2.scad:
```
//Customizable Filament Holder
//Created by planfab
//www.planfab.eu
//Date 29.09.2014

/*[Global]*/

//This is the total radius of the Filament Holder (from center to edge) in mm. The true radius might be a bit shorter.
radius=120; //[50:300]

//This is the radius of the center hole of the Filament Holder in mm.
center_hole=26.5; //[10:40]

//This is the depth of the Filament Holder (top to bottom) in mm.
depth=30; //[10:100]

//Please choose the radius of your filament. In mm.
filament_radius=1.75; //[1.75:1.75,3.00:3.00]

/*[Hidden]*/
$fn=100;

difference(){
	filament_holder();
	for(i=[1:4]){
	rotate([0,0,i*360/4])
		filament_radius();
	}
}

module filament_radius(){
	translate([0,0,depth/2])
		rotate([-90,0,0])
			cylinder(center_hole*1.5,filament_radius,filament_radius);
}

module filament_holder(){
	difference(){
		union(){
			center();
			difference(){
				for(i=[1:3]){
					rotate(i*360/3,0,0)
						arm();
				}
				difference(){
					cylinder(depth,radius,radius);
					translate([0,0,-depth*0.1])
						cylinder(depth*1.2,radius*0.9,radius*0.9);
				}
			}
		}
		translate([0,0,-depth*0.1])
			cylinder(depth*1.2,center_hole,center_hole);
	}
}

module arm(){
	difference(){
		armpiece();
		translate([-((depth/8)*1.5),radius/2,depth/2])
			rotate([0,90,0])
				armcut();
	}
}

module armcut(){
	hull(){
		translate([0,radius/2,0])
			cylinder(((depth/8)*2)*1.5,depth/2,depth/2);
		translate([(depth/2)/3,0,0])
			cylinder(((depth/8)*2)*1.5,(depth/2)/3,(depth/2)/3);
	}
}

module armpiece(){
	union(){
		translate([0,0,depth-(depth/8)])
			rotate([-90,0,0])
				cylinder(radius,depth/8,depth/8);
		translate([-((depth/8)*2)/2,0,depth/8])
			cube([((depth/8)*2),radius,depth-((depth/8)*2)]);
		translate([0,0,depth/8])
			rotate([-90,0,0])
				cylinder(radius,depth/8,depth/8);
	}
}

module center(){
	difference(){
		translate([0,0,depth/2])
			sphere(center_hole*1.5);
		translate([-(center_hole*1.5)*2/2,-(center_hole*1.5)*2/2,-(center_hole*1.5)*2])
			cube((center_hole*1.5)*2);
		translate([-(center_hole*1.5)*2/2,-(center_hole*1.5)*2/2,depth])
			cube((center_hole*1.5)*2);
	}
}
```


[User]
I'm looking to create a hydroponic pot design, and I'd like to have it be fully parametric. I want to be able to specify the height of the pot, the top and bottom radius, the wall thickness, and the thickness of a top ring. Also, the pot should have a grid structure at the base for drainage and support.

Specifically, the design should have:

*   A main pot body that is essentially a truncated cone, with separate top and bottom radii.
*   A defined wall thickness, meaning the pot will have an inner and outer surface with a uniform gap between them.
*   A top ring at the top of the pot, which protrudes outwards slightly. This ring should also have a specified thickness.
*   A grid base that is made of a series of perpendicular bars at the base.

I'm looking for this to be generated as an OpenSCAD file, or multiple if necessary. I'm not sure if the base grid will need its own module but I imagine everything could be in a single main pot module.

I'd like to be able to call the design like this in OpenSCAD:

`pot(height=55, top_radius=25, bottom_radius=20, wall_thickness=1.5, ring_top_thickness=2);`

I imagine this will require use of OpenSCAD's `cylinder`, `difference`, `translate`, `union`, `hull`, `rotate`, `intersection`, and `cube` primitives. I'm not sure if `for` loops would be needed, but they are available in OpenSCAD if needed. I don't think I need any external libraries.

[Assistant]
hydroponic_pot.scad:
```
fn = 100;

pot(height=55, top_radius=25, bottom_radius=20, wall_thickness=1.5, ring_top_thickness=2);

module pot(height, top_radius, bottom_radius, wall_thickness, ring_top_thickness, grid_thickness=2.6){

	bottom_diameter = bottom_radius * 2;

	union(){
		difference(){
			cylinder(h=height, r1=bottom_radius, r2=top_radius, $fn=fn);
			translate([0,0,0]){
				cylinder(h=height, r1=bottom_radius-wall_thickness/2, r2=top_radius-wall_thickness/2, $fn=fn);
			}
		}
		intersection(){
			cylinder(h=wall_thickness, r=bottom_radius, $fn=fn);
			translate([-bottom_radius,-bottom_radius,0])
				grid();
		}
		translate([0,0,height])
			top_ring();
	}

	module top_ring(){
		difference(){
			hull(){
				cylinder(h=wall_thickness, r=top_radius+ring_top_thickness/2, $fn=fn);

				translate([0,0,-wall_thickness]){
					difference(){
						cylinder(h=1, r=top_radius-wall_thickness/2, $fn=fn);
						cylinder(h=1, r=top_radius-wall_thickness, $fn=fn);
					}
				}
			}
			translate([0,0,-wall_thickness])
				cylinder(h=wall_thickness+wall_thickness, r=top_radius-wall_thickness/2, $fn=fn);
		}

	}

	module grid(){
		bars();
		rotate([0,0,90]){
			translate([0,-bottom_diameter,0])
			bars();
		}
	}

	module bars(){
		for ( i = [0 : round(bottom_radius/grid_thickness)] ){
			translate([0,i*(2*grid_thickness),0])
				cube([bottom_radius*2, grid_thickness, wall_thickness]);
		}
	}
}
```


[User]
Okay, I'm looking to design a configurable film transport roller for various film formats, maybe even some SMD component tape. I've got some basic ideas down, but I need help getting this into a usable OpenSCAD design.

Here's the gist: I need a roller that can have optional outer guide walls and sprocket teeth. These features should be easily toggled on or off. The design should be parametric, so I can easily change things like the number of sprockets, their pitch, and the overall dimensions of the roller.

Specifically, the design should have these adjustable aspects:

*   **Sprockets:**
    *   Ability to add or remove sprockets.
    *   Adjustable number of sprockets.
    *   Adjustable sprocket pitch (distance between sprockets).
    *   Adjustable sprocket tooth dimensions (width, length, corner radius, height).
    *   Ability to "embed" the base of the sprocket into the roller surface to avoid gaps.
*   **Outer Guide Walls:**
    *   Ability to add or remove outer guide walls.
    *   Adjustable height for the outer guide walls.
    *   Option for a sloped or tapered inner edge on the guide walls to prevent film from catching.
*   **Roller Body:**
    *   Adjustable film width and frame width.
    *   Adjustable slop (space) between the film and the sides of the roller.
    *   Adjustable frame gap (distance between film frame and the roller to prevent scratching).
    *   The roller body should consist of a central core cylinder and two outer cylinders that the film actually touches.
    *   Adjustable core cylinder and runner cylinder heights and radius.
    *   Adjustable mounting shaft hole radius.
*   **General:**
    *   Adjustable resolution for the model.

I'd like to be able to specify parameters for different film formats (like 8mm, 16mm, 35mm) and also potentially SMD component tape.

I have some ideas on how to do this, but I'm not sure how best to structure the OpenSCAD code. I'm also not sure how to implement the sloped edges on the outer guide walls or the embedding of the sprockets. I'm comfortable with the basics of OpenSCAD, but I'm not an expert.

Could you provide me with a set of OpenSCAD files that would handle this? I don't want to use any external libraries (e.g. BOSL, MCAD) for this project, just built-in OpenSCAD functionality. I also want a "main" file to help visualize different roller/feature combinations.

I think that covers it - let me know if I missed something. Thanks!

[Assistant]
FilmMain.scad:
```
// TODO - make EMBEDDED BASE of sprockets non-sloped, so area is smaller & less likely to "poke out" into "free air" over edge of roller surface

//CUSTOMIZER VARIABLES

//Add sprockets
addSprockets = "yes"; // [yes,no]

//Add outer guide edges
addOuterGuideEdges = "yes"; // [yes,no]

// Number of sprockets
numSprockets = 8;

// Distance between sprockets
SprocketPitch = 7.605;

// Embed base of sprockets into roller - so no air gap
sprocketEmbed = 0.08;	// because a flat cone base on a cylinder surface would leave a gap,
                        // need to 'embed' sprocket cone into surface to ensure fully mates - no gaps!
                        // ** ADJUST FOR DIF NUMBER OF SPROCKETS .. ie dif roller radius!

// std 16mm sprocket-perforations
// Width
spkt_W = 1.829;
// Length
spkt_L = 1.27;
//Corner radius
spktCorner_R = 0.25;

spkt_H = 2.2 + sprocketEmbed;		// <<< embedding will reduce actual base size!!!!!
								// hopefully this will give just enough slop for good fit :)

//Film width
filmWidth = 16;		 // from 16mm standards

// Film frame width
frameWidth = 10.26;  // from 16mm standards

// bit of slop - so film does not grab/stick/rub on sides of roller walls
filmSlop = 0.2;		 // a little bit of slop - so film does not grab/stick/rub on sides
					 // reduce or REMOVE if add sloping outer walls

// film **frame** area NOT touching roller ... so less change of damaging actual picture area in the frame!!!
frameGap = 0.1;

// RunnerCyl_H is left at it's full nominal height
// frameGap is NOT subtracted here, relevant drawing methods adjust for filmGap as required.
// This way sprockets are easier to put in the nominal middle of the film roller area!
RunnerCyl_H = (filmWidth - frameWidth - frameGap)/2;		// -frameGap => film **frame** area NOT touching roller ... so less change of damaging actual picture area in the frame!!!
RunnerCyl_R = (numSprockets*SprocketPitch)/(2*PI);          //circumference = 2*pi*radius

// max outer wall thickness, excluding any inner tapering to stop film grabbing on walls
OuterCyl_H = 2;

CoreCyl_H = filmWidth + filmSlop - 2*RunnerCyl_H ;

// Core cylinder radius (includes motor shaft radius!)
CoreCyl_R = 4;

// motor/stepper shaft radius. Must be less than CoreCyl_R!
shaft_R = 6.5/2;        // motor/stepper shaft radius

OuterCyl_R = RunnerCyl_R + 3;

// Slope inner roller wall, avoid film edges grabbing. Only used by 2D_extruded_roller code, not by film_roller.scad
outerWallSlopeGap = 0.5;

// resolution of individual parts in the 3D model
fragResolution = 500;

//CUSTOMIZER VARIABLES END

/* What is this thing?
    Guide roller for common film formats and also for SMD component tape feed.
    Optional outer guide walls and sprocket teeth.
    Adjustable features: guide wall slopes, number of sprockets, sprocket slopes & height....

Ultimate goal:
    Create generic design to suit all the different 8, 16, 35, .... film formats
    AND even SMD tape (16mm seems fit as is, but is likely to need tweaking for more reliable feeding!)

Current status:
    2014-09-14. Untested work in progress for 16mm film.
    Can already simply adjust features. Structure in place to easily switch to other formats.
    Just need data entry & testing for the other formats.

Version 0.61 2014-10-13
    -------------------------------------------------------------------------------------------------
USAGE:
	To add/remove outer guide walls or sprockets, in "2D_extruded_roller.scad" or "film_roller.scad":
        //Select which parts to display
        addSprockets = true;
        addOuterGuideEdges = false;

	To adjust individual features - edit the configuration file matching your chosen film size, eg "16mm.scad".
	Many features are calculated from basic parameters.
	For example the number of sprockets and the frame height combine to set the roller circumference and thus the radius.

	All the openSCAD source files must all be in same directory.
	Open "FilmMain.scad" in openSCAD then compile as usual.
	"FilmMain.scad" shows how to display one of each type of roller/capstan and in/exclude outer guide edges and sprockets.
    -------------------------------------------------------------------------------------------------

Other notes:
    - If sprockets are floating unattached out of position, refer to USAGE notes above on selecting roller drawing type.
    - Also zoom in a LOT to check sprockets are properly embedded in roller and do not have edge gaps, or conversely embedded to deep.
        If they do, adjust sprocketEmbed parameter.
	- film_roller.scad - does not have sloping inner edge on outer guide walls.

TO DO:
    - finish parameters for all formats 8, 16, 35, .... film formats & SMD
    - add option to make one/both outer edges a cog - expect this will help driving stack of multiple SMD rollers
        ... or 'down' on the shaft - ie add extra cylinder that is also cog.  (Less preferred as would make each roller fatter  - takes more space!)
    - Sprockets - Currently 2 per frame, at frame edges. Cater for more/less per frame and different positions.
        ... sprockets on one/both sides.....
    - create the physical objects and test
    - plus more TO DO in code

Credits:
  - http://openSCAD.org
  - http://en.wikipedia.org/wiki/16_mm_film
  - http://www.paulivester.com/films/filmstock/guide.htm
  - http://motion.kodak.com/motion/uploadedFiles/US_plugins_acrobat_en_motion_newsletters_filmEss_11_Film_Specs.pdf

License:
    Film-SMD-Roller-Capstan by Spanner888 at {U}sable{D}evices is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
    Permissions beyond the scope of this license may be available via http://usabledevices.com/2011/11/contact-emails-and-legal-and-copyright-information/.

    Blog of hardware build and other Telecine info can be found at http://usabledevices.com/category/telecine/
    gitHub:	 http://github/spanner888
    thingiverse: http://www.thingiverse.com/user:spanner888

Version 0.71 2014-09-30
*/

// Add one 2D_extrude_roller at offset to the "right"
 if (addSprockets == "yes") {
         color("orange")
    translate([0,28,0])
    TwoDExtrudeRoller(addOuterGuideEdges);
    translate([0,28,0])
    color("green")
    if (addOuterGuideEdges  == "yes") {
        sprocketRing(OuterCyl_H + RunnerCyl_H/2, spkt_H, spkt_W, spktCorner_R, spkt_L);
    }
    else{
        sprocketRing(RunnerCyl_H/2, spkt_H, spkt_W, spktCorner_R, spkt_L);
    }
}
else {
    color("brown")
    translate([0,55,0])
    TwoDExtrudeRoller(addOuterGuideEdges);
}

// Add ONE film_roller - created from cylinders
 if (addSprockets == "yes") {
    if (addOuterGuideEdges  == "yes") {
        sprocketRing(OuterCyl_H + RunnerCyl_H/2, spkt_H, spkt_W, spktCorner_R, spkt_L);
    }
    else{
        sprocketRing(RunnerCyl_H/2, spkt_H, spkt_W, spktCorner_R, spkt_L);
    }
}
color("silver")
film_roller(addOuterGuideEdges);

/* All the helper modules etc are below here! */

// SPROCKET START

// ASSUMPTION: embedding sprockets will reduce actual base size!!!!!
// hopefully this will give just enough slop for good fit :), else have to increase base size!

/*sprockets should be more oval shaped?
	 how to bevel or round edges of a cylinder????
	... actualy do NOT have to be round/oval
	B&H ones are made ffrom FLAT steel and FLAT beveled
	... so always have FLAT surfaces on contact with film!!!!!!

	?? so make as cube, then difference with TWO dif pyramids to set base & top bevels/slopes??
	simpler = just TWO dif pyramids to set base & top bevels/slopes??
.. MORE complete .. back to cube + ROUND the corners as have the sprocket corner radius
...then bevel with two pyramids!!!!

*/

/*sprockets
  *** ACTUALLY AT LEAST THREE DIF SPROCKET HOLE SHAPES: 16mm, Kodak, B&H
  .. need to determine for EACH FILM ... and even each clip on a film!!!!!
  ... see below in standards section

  Need to design sprocket type for each film ... or a generic type!!!!
*/

/**
*****************************************************************************
*** RunnerCyl_R IS CRITICAL - SETS SPROCKET SPACING = FRAME PERF SPACING!!!!
*** ?? CALC FROM DIAMETER = numSprockets*Sprocket-pitch, SO RADIUS = numSprockets*Sprocket-pitch/2&pi
***
******************************************************************************
*/

///////////////////////////////////////////////////////////////////////////////////////////
// now draw the parts
///////////////////////////////////////////////////////////////////////////////////////////
$fn = fragResolution;

// Module to draw ONE sprocket
module sprocket(s_height, s_L, sCorner_R, s_W){
	//need to do 2D shape - THEN extrude!!!!!
	rotate(a=[0,180,0]){			// rotate to get sprocket facing outwards!
		linear_extrude(height = s_height, center = true, convexity = 10, scale=1.5)
		minkowski()
		{
		   square([(s_W - 2*sCorner_R ), (s_L - 2*sCorner_R)], center = true, $fn = fragResolution);
		   circle(r=sCorner_R, center = true);
		}
	}
}

// Now draw Aa ring of ALL the sprockets in final position
//film drive sprockets, by default dir of cyl is "up Z axis" ... 3rd param
module sprocketRing(shaft_H, s_height, s_W, sCorner_R, s_L){
	color("red")
	for ( i = [0 : 1 : numSprockets-1 ] )
	{
	   rotate( [90, 0, i * 360 / numSprockets])
	   translate([0,
                    shaft_H,
                    RunnerCyl_R + spkt_H/2 - sprocketEmbed // set sprockets at this radius. + spkt_H/2 as drawn with "center = true".
                    ])
        sprocket(s_height, s_W, sCorner_R, s_L);
    }
}
// SPROCKET END

// FILM_ROLLER START
//*** ASSUMPTION: SPROCKETS ARE IN CENTER OF RUNNER!!!!!!!!

/* mounting shaft hole
	... Does it have to go ALL the way through??
 	... add a flat spot to mate with shaft?
	?? adjust hole size for tightish fit on shaft?????????
*/

//... should the INSIDE edges of the outer guide edges have slight slope ?
// - ie thinner at top edges to help film slot in easier.
// ... or at LEAST a rounded top edge?
/* see Extruding a Polygon

Extrusion can also be performed on polygons with points chosen by the user.

Here is a simple polygon and its (fine-grained: $fn=200) rotational extrusion (profile and lathe). (Note it has been rotated 90 degrees to show how the rotation will look, the rotate_extrude() needs it flat).

rotate([90,0,0])        polygon( points=[[0,0],[2,1],[1,2],[1,3],[3,4],[0,5]] );
// --------------------------------------------------------------------------- ;
rotate_extrude($fn=200) polygon( points=[[0,0],[2,1],[1,2],[1,3],[3,4],[0,5]] );
*/

// ** b&h - non-sprocket side RunnerCyl film surface slopes INWARDS!!!

/* how to MEASURE/VALIDATE sizes before creating/printing?
Getting input

  Now we have variables, it would be nice to be able to get input into them instead of setting the values from code.
  There are a few functions to read data from DXF files, or you can set a variable with the -D switch on the command line.
  Getting a point from a drawing
  Getting a point is useful for reading an origin point in a 2D view in a technical drawing.
  The function dxf_cross will read the intersection of two lines on a layer you specify and return the intersection point.
  This means that the point must be given with two lines in the DXF file, and not a point entity.
  OriginPoint = dxf_cross(file="drawing.dxf", layer="SCAD.Origin",
			  origin=[0, 0], scale=1);
  Getting a dimension value
  You can read dimensions from a technical drawing. This can be useful to read a rotation angle, an extrusion height, or spacing between parts. In the drawing, create a dimension that does not show the dimension value, but an identifier. To read the value, you specify this identifier from your script:
  TotalWidth = dxf_dim(file="drawing.dxf", name="TotalWidth",
			  layer="SCAD.Origin", origin=[0, 0], scale=1);

  For a nice example of both functions, see Example009 and the image on the homepage of OpenSCAD.
*/
/*******************************************************************************
*** RunnerCyl_R IS CRITICAL - SETS SPROCKET SPACING = FRAME PERF SPACING!!!!
?? CALC FROM DIAMETER = numSprockets*Sprocket-pitch, SO RADIUS = numSprockets*Sprocket-pitch/2&pi

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

// draw without Outer Guide walls
module film_rollerPartial(){
    //First join all the cylinders into the roller shape
    union(){
        // central core cylinder
        //translate ([0,0,RunnerCyl_H - frameGap]) cylinder(h = CoreCyl_H, r = CoreCyl_R);
        cylinder(h = CoreCyl_H + 2 * RunnerCyl_H, r = CoreCyl_R);

        // runners .. film runs on these two cylinders
        translate ([0,0,RunnerCyl_H + CoreCyl_H + frameGap]) cylinder(h = RunnerCyl_H - frameGap, r = RunnerCyl_R);
        cylinder(h = RunnerCyl_H - frameGap, r = RunnerCyl_R);
    }
}

// draws the film roller based on pre-selected film standard size, #sprockets...
// sprockets are not drawn here, but # of sprocketcs does set runner radius
module film_rollerAll(){
    //First join all the cylinders into the roller shape
    union(){
        translate ([0,0,OuterCyl_H]) film_rollerPartial();
        translate ([0,0,CoreCyl_H + 2*RunnerCyl_H + OuterCyl_H]) cylinder(h = OuterCyl_H, r = OuterCyl_R);
        cylinder(h = OuterCyl_H, r = OuterCyl_R);
    }
}

module film_roller(addOGEdges = "yes"){
    if (addOGEdges == "yes"){
        difference() {
            film_rollerAll();
            // now difference (subtract) the mounting shaft hole
            //translate ([0,0,-(RunnerCyl_H + OuterCyl_H)])
            cylinder (h = (CoreCyl_H + 2*RunnerCyl_H + 2*OuterCyl_H), r = shaft_R);
        }
    }
    else{
        difference() {
            film_rollerPartial();
            // now difference (subtract) the mounting shaft hole
            //translate ([0,0,-(RunnerCyl_H + OuterCyl_H)])
            cylinder (h = (CoreCyl_H + 2*RunnerCyl_H + 2*OuterCyl_H), r = shaft_R);
        }
    }
}
// FILM_ROLLER END

// 2D_extruded_roller START
// changes here are NOT ALWAYS automatically compiled/reloaded. Need to press F5 in main app!

//TODO review rollerOutlineAll/Partial
// make rollerOutlineAll call rollerOutlinePartial???
// need think about shaft position....

// for module rollerOutlineAll
L0 = 0;                                 // first outer edge
L1 = L0 + OuterCyl_H;                   // + outer wall thickness
L2 = L1 + RunnerCyl_H - frameGap;       // + runner thickness
L3 = L2 + CoreCyl_H + 2 * frameGap;     // + central shaft
L4 = L3 + RunnerCyl_H - frameGap;       // + runner thickness
L5 = L4 + OuterCyl_H;                   // + outer wall thickness

// for module rollerOutlinePartial
LP0 = 0;                                // first outer edge
LP1 = LP0 + RunnerCyl_H - frameGap;     // + runner thickness
LP2 = LP1 + CoreCyl_H + 2 * frameGap;   // + central shaft
LP3 = LP2 + RunnerCyl_H - frameGap;     // + runner thickness

// complete with outer guide walls
module rollerOutlineAll(){
    // see Extruding a Polygon doco/help
	// each line below draws a line vertical to the shaft
	// lines ALONG/PARALLEL to shaft are drawn by {line:last to next_line:first} data pairs!
	polygon( points=[[shaft_R, L0], [OuterCyl_R, L0],
				[OuterCyl_R, L1-outerWallSlopeGap], [RunnerCyl_R, L1],	    //outer guide wall
				[RunnerCyl_R, L2], [CoreCyl_R, L2],	                        // runner
				[CoreCyl_R, L3], [RunnerCyl_R, L3], 			            // core
				[RunnerCyl_R, L4], [OuterCyl_R, L4 + outerWallSlopeGap],    // runner
                [OuterCyl_R, L5], [shaft_R, L5]     				        //outer guide wall
								]);
}

// complete with outer guide walls
module rollerOutlinePartial (){
    // see Extruding a Polygon doco/help
	// each line below draws a line vertical to the shaft
	// lines ALONG/PARALLEL to shaft are drawn by {line:last to next_line:first} data pairs!
	polygon( points=[[shaft_R, LP0], [RunnerCyl_R, LP0],	        //outer edge
				[RunnerCyl_R, LP1], [CoreCyl_R, LP1],	            // runner
				[CoreCyl_R, LP2], [RunnerCyl_R, LP2], 			    // runner
				[RunnerCyl_R, LP3], [shaft_R, LP3]    				//outer edge
								]);
}

//Draw with/out the outer guide edges, according to parameter passed in.
module TwoDExtrudeRoller(addOuterGuideEdges = "yes"){
    if (addOuterGuideEdges == "yes" ){
        //rotated 90 degrees to show how the rotation will look, the rotate_extrude() needs it flat).
        //rotate([90,0,0])
        rotate_extrude($fn=200) rollerOutlineAll();
    }
    else {
        rotate_extrude($fn=200) rollerOutlinePartial();
    }
}
// 2D_extruded_roller END

```


[User]
I'm trying to design a simple object with OpenSCAD, but I want to use the customizer feature to make it easily adjustable. Basically, I need two cubes, one sitting on top of the other.

The base cube should have dimensions controlled by three customizer variables: `x_measurement` for width, `y_measurement` for length, and `numerical_slider` for height. I'd like to offer some preset options for width (`x_measurement`) of 5, 10, 15, and 20. The length (`y_measurement`) should have options of 5, 10, 15, 20, 25, and 30. The height (`numerical_slider`) should have a slider ranging from 0 to 30.

The second cube, which will sit on top of the first, should have the same `x_measurement` and `y_measurement` as the base cube, but a fixed height equal to the `numerical_slider`. It should sit exactly on top, so it will need to be translated upwards by half of `numerical_slider`. Both cubes should be centered.

Could you write the OpenSCAD code for this? I don't need any special libraries for this.

[Assistant]
test_cube_1.scad:
```
//customizer test

//width
x_measurement=10; // [5, 10, 15, 20]

//length
y_measurement=10; // [5, 10, 15, 20, 25, 30]

//height
numerical_slider = 10;	//	[0:30]

cube([x_measurement, y_measurement, z_measurement], center=true);

translate ([0, 0, numerical_slider/2])

//customizable cube

cube([x_measurement, y_measurement, numerical_slider], center=true);
```


[User]
Hey, I'm looking to create a customizable 3D model using OpenSCAD. I need a design with a couple of core elements: a box and a cylinder, both with adjustable dimensions.

For the box, I'd like to control the width, length, and height independently. I want to be able to set the width, which I'll call `x_measurement`, to a value between 5 and 20, in increments of 5. The length, or `y_measurement`, should also be adjustable between 5 and 30, in increments of 5. And lastly, I need to be able to control the height of the box with a variable, let's call it `numerical_slider`, that has a range from 0 to 30, in increments of 1.

I want the design to actually include *two* boxes. The first box should have height equal to the `z_measurement`, but I am unsure what that is and the height of the box should therefore not be customizable in that way. Then, the second box should be a duplicate of the first box with adjustable height, as controlled by the `numerical_slider`. The second box should also be translated along the z-axis by half of its `numerical_slider` height. Both boxes should be centered around the origin.

On top of that, I also need a cylinder. The cylinder should be positioned at `[0, -15, 5]` with the rotation set to `[90, 0, 0]` (so it’s lying down). The cylinder’s length should be 10, and its radius should be controlled by a variable I'll call `right_eye`, adjustable between 0 and 3, in increments of 1. Could you generate the OpenSCAD code for all of this? I don't need any specific libraries, just the basic OpenSCAD functionality.

[Assistant]
customizable_cube.scad:
```
//customizer test

//width
x_measurement=10; // [5, 10, 15, 20]

//length
y_measurement=10; // [5, 10, 15, 20, 25, 30]

//height
numerical_slider = 10;	//	[0:30]

cube([x_measurement, y_measurement, z_measurement], center=true);

translate ([0, 0, numerical_slider/2])

//customizable cube
cube([x_measurement, y_measurement, numerical_slider], center=true);

// -end of cube-

//customizable cylinder

right_eye = 2; //[0:3]

translate([0, -15, 5])
rotate([90, 0, 0])
cylinder(10, right_eye, right_eye);
```