[User]
Hi, I'm looking to create a parametric OpenSCAD file for generating Schlage SC1 keys. I've seen a previous attempt, but it wasn't very well organized. I'd like something more flexible and configurable.

Essentially, the key is based on a few key parameters: the 5 key cuts, overall key thickness and length, bit width and depth, pin spacing, shoulder length, key handle dimensions, and a few measurements related to the chamfer and channels along the key.

The key needs to have a rectangular handle with rounded edges and a hole for a key ring. The main part of the key should have a blade-like shape with the 5 cutouts. These cuts will be determined by the 5 bitting parameters I enter. It should have a chamfer on the tip, and grooves cut along the key face.

I'd like to be able to specify:

*   **Key Cut Depths:** Five numerical values (a, b, c, d, e), that each correspond to the depth of each of the five cuts along the key.
*   **Thickness:** Overall thickness of the key.
*   **Length:** The total length of the key (including the blade, but not including the handle.)
*   **Width:** The width of the blade portion of the key.
*   **Bit Width:** Width of the cutting bit.
*   **Bit Depth Increment:** The depth change between each of the 10 possible cut depths.
*   **Pin Spacing:** Distance between each of the 5 cuts on the key.
*   **Shoulder Length:** Length of the key from the handle to the first bit.
*   **Handle Length, Width, Depth:** Dimensions of the rectangular handle.
*   **Chamfer Dimensions:** Dimensions and angles of the chamfer on the tip.
*  **Channel Dimensions:** Location, depth, angle, and width of the channels along the key face
*   **Keyring Hole Radius:** Radius of the hole in the handle.

I want to be able to use this to generate a stl file for printing so I can test it out. I don't need anything fancy, just something that will allow me to make some adjustments and get a key that works. Thanks!

[Assistant]
sc1.scad:
```
// Physical Keygen - by Nirav Patel <http://eclecti.cc>
//
// Generate a duplicate of a Schlage SC1 key by editing the last line of the file
// and entering in the key code of the lock.  If you don't know the key code,
// you can measure the key and compare the numbers at:
// http://web.archive.org/web/20050217020917fw_/http://dlaco.com/spacing/tips.htm
//
// This work is licensed under a Creative Commons Attribution 3.0 Unported License.

// Since the keys and locks I have were all designed in imperial units, the
// constants in this file will be defined in inches.  The mm function
// allows us to retain the proper size for exporting a metric ST
//1st number of key code
a = 0;
//2nd number of key code
b = 0;
//3rd number of key code
c = 0;
//4th number of key code
d = 0;
//5th number of key code
e = 0;
function mm(i) = i*25.4;

module rounded(size, r) {
    union() {
        translate([r, 0, 0]) cube([size[0]-2*r, size[1], size[2]]);
        translate([0, r, 0]) cube([size[0], size[1]-2*r, size[2]]);
        translate([r, r, 0]) cylinder(h=size[2], r=r);
        translate([size[0]-r, r, 0]) cylinder(h=size[2], r=r);
        translate([r, size[1]-r, 0]) cylinder(h=size[2], r=r);
        translate([size[0]-r, size[1]-r, 0]) cylinder(h=size[2], r=r);
    }
}

module bit() {
    w = mm(1/4);
    difference() {
        translate([-w/2, 0, 0]) cube([w, mm(1), w]);
        translate([-mm(7/256), 0, 0]) rotate([0, 0, 135]) cube([w, w, w]);
         translate([mm(7/256), 0, 0]) rotate([0, 0, -45]) cube([w, w, w]);
    }
}

// Schlage SC1 5 pin key.  The measurements are mostly guesses based on reverse
// engineering some keys I have and some publicly available information.
module sc1(bits) {
    // You may need to adjust these to fit your specific printer settings
    thickness = mm(0.080);
    length = mm(17/16);
    width = mm(.335);

    shoulder = mm(.231);
    pin_spacing = mm(.156);
    depth_inc = mm(.015);

    // A fudge factor.  Printing with your average RepRap, the bottom layer is
    // going to be squeezed larger than you want. You can make the pins
    // go slighly deeper by a fudge amount to make up for it if you aren't
    // adjusting for it elsewhere like Skeinforge or in your firmware.
    // 0.5mm works well for me.
    fudge = 0.5;

    // Handle size
    h_l = mm(1);
    h_w = mm(1);
    h_d = mm(1/16);
    difference() {
        // blade and key handle
        union() {
            translate([-h_l, -h_w/2 + width/2, 0]) rounded([h_l, h_w, thickness], mm(1/4));
            intersection() {
                // cut a little off the tip to avoid going too long
                cube([length - mm(1/64), width, thickness]);
                translate([0, mm(1/4), thickness*3/4]) rotate([0, 90, 0]) cylinder(h=length, r=mm(1/4), $fn=64);
            }
        }

        // chamfer the tip
        translate([length, mm(1/8), 0]) {
            rotate([0, 0, 45]) cube([10, 10, thickness]);
            rotate([0, 0, 225]) cube([10, 10, thickness]);
        }

        // put in a hole for keychain use
        translate([-h_l + mm(3/16), width/2, 0]) cylinder(h=thickness, r=mm(1/8));

        // cut the channels in the key.  designed more for printability than accuracy
        union() {
            translate([-h_d, mm(9/64), thickness/2]) rotate([62, 0, 0]) cube([length + h_d, width, width]);
            translate([-h_d, mm(7/64), thickness/2]) rotate([55, 0, 0]) cube([length + h_d, width, width]);
            translate([-h_d, mm(7/64), thickness/2]) cube([length + h_d, mm(1/32), width]);
        }

        translate([-h_d, width - mm(9/64), 0]) cube([length + h_d, width - (width - mm(10/64)), thickness/2]);
        translate([-h_d, width - mm(9/64), thickness/2]) rotate([-110, 0, 0]) cube([length + h_d, width, thickness/2]);

        intersection() {
            translate([-h_d, mm(1/32), thickness/2]) rotate([-118, 0, 0]) cube([length + h_d, width, width]);
            translate([-h_d, mm(1/32), thickness/2]) rotate([-110, 0, 0]) cube([length + h_d, width, width]);
        }

        // Do the actual bitting
        for (b = [0:4]) {
            translate([shoulder + b*pin_spacing, width - bits[b]*depth_inc - fudge, 0]) bit();
        }
    }
}

// This sample key goes to a lock that is sitting disassembled on my desk
// Flip the key over for easy printing

rotate([180, 0, 0]) sc1([a,b,c,d,e]);

```


[User]
Hi there! I'm looking to create a corrugated sign, something like the one MathGrrl designed but with a few key changes and more flexibility. I've seen the "Corrugated_Sign_V3.0.scad" file and that gives me a good starting point.

Essentially, I want a design that creates panels connected by hinges, allowing the sign to fold up like an accordion. Each panel will have a character on it.

Here's what I need:

1.  **Parametric Text Input:** I need to be able to input a string of text, not just a fixed set of `letter` variables. This should handle letters, numbers, common punctuation (like `!`, `?`, `-`, `$`, `#`, `%`, `.`), and spaces. The text input should be parsed, and each character should be placed on a separate panel. I'm imagining that I would just enter in the text in one place as a string, rather than needing to assign each character to an individual variable.

2.  **Automatic Panel Number:** The number of panels should automatically adjust to the length of the input string, and I don't want to specify the `characters` variable anymore. If I type "Hello World", the sign should have 11 panels automatically without me needing to do any math.

3.  **Font Selection:** It'd be fantastic to have some font options! Maybe a few common fonts like "Arial," "Helvetica," and "Courier New" to start. I'd like a parameter to select which font to use. And, ideally, an option to set the font size, perhaps as a percentage of the `height` parameter.

4.  **Panel Customization:** I need more parameters for adjusting the panels.
    *   **Height** of the panels (like in the original, already have this).
    *   **Thickness** of the panels (also have this).
    *   **Hinge Radius:** The radius of the hinge cylinders, should be modifiable.
    *   **Hinge Clearance:** The gap between the hinge parts.
    *   **Corner Radius:** The roundness of the panel corners.
    *   **Stacking Clearance:** Should be a configurable parameter.

5. **Hinge Refinement:**  I'd like to request a couple of changes to the hinges.  I'm envisioning that the female side of each hinge should have a cone on the top and bottom and that the male part of each hinge should have a "saddle" that goes around the hinge axis to make the male part of the hinge more robust.

6. **Library:**  I'd prefer if you used the `write/Write.scad` library that's already in use in the original design.

I think that's all the major points. I'm looking for a fully parametric design that's easy to customize through user-defined variables. Please provide the OpenSCAD code for this. Let me know if you have any questions!

[Assistant]
Corrugated_Sign_V3.0.scad:
```
// MathGrrl corrugated sign & RDS02Stang Remix

use <write/Write.scad>

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

/* [Size and Characters] */

// Choose a height for the planels, in mm
height = 30;

// How many characters, including spaces, are in your word or phrase? (Must be between 3 and 40.)
characters = 3;

// Keep entering characters, including spaces, until you are done.
letter1  = "A";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter2  = "B";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter3  = "C";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter4  = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter5  = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter6  = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter7  = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter8  = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter9  = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter10 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter11 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter12 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter13 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter14 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter15 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter16 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter17 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter18 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter19 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter20 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter21 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter22 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter23 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter24 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter25 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter26 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter27 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter28 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter29 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter30 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter31 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter32 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter33 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter34 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter35 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter36 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter37 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter38 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter39 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter40 = "";
//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]

/* [Adjustments] */

// Choose a hinge radius (mm)
hinge_radius = 2;

// Choose a hinge clearance factor (mm)
hinge_clearance = .75;

// Choose panel thickness parameter (mm)
thick = .75;

// Other variables that people don't get to choose
$fn=24*1;
fudge = .01*1;
corner_radius = .05*height;
stacking_clearance = .1*3;
outside_height = .4*(height-2*stacking_clearance);
inside_height = (height-2*stacking_clearance)-2*outside_height;
cone_height = 1.4*hinge_radius;
hinge_mover = height/2-corner_radius-stacking_clearance;

letters = [letter1,letter2,letter3,letter4,letter5,letter6,letter7,letter8,letter9,letter10,letter11,letter12,letter13,letter14,letter15,letter16,letter17,letter18,letter19,letter20,letter21,letter22,letter23,letter24,letter25,letter26,letter27,letter28,letter29,letter30,letter31,letter32,letter33,letter34,letter35,letter36,letter37,letter38,letter39,letter40];

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

panel_place_first(letters[0],0);
for  (i=[1:characters-2]){
	panel_place(letters[i],i);
}
panel_place_last(letters[characters-1],characters-1);

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

// completed letter-hinged-panel placer
module panel_place(letter,i){
	translate([i*2*(thick+corner_radius+stacking_clearance),0,0])
	rotate(i*180,[0,1,0])
	rotate(i*180,[0,0,1])
		difference(){
			hinged_panel();
			rotate(i*180,[1,0,0])
			rotate(i*180,[0,0,1]) letter_place(letter);
		}
}

// completed letter-hinged-panel placer for *first* panel
module panel_place_first(letter,i){
	translate([i*2*(thick+corner_radius+stacking_clearance),0,0])
	rotate(i*180,[0,1,0])
	rotate(i*180,[0,0,1])
		difference(){
			hinged_panel_no_outer();
			rotate(i*180,[1,0,0])
			rotate(i*180,[0,0,1]) letter_place(letter);
		}
}

// completed letter-hinged-panel placer for *last* panel
module panel_place_last(letter,i){
	translate([i*2*(thick+corner_radius+stacking_clearance),0,0])
	rotate(i*180,[0,1,0])
	rotate(i*180,[0,0,1])
		difference(){
			hinged_panel_no_inner();
			rotate(i*180,[1,0,0])
			rotate(i*180,[0,0,1]) letter_place(letter);
		}
}

// letter placer
module letter_place(letter){
	translate([thick+corner_radius-1,-4.5*height/20,-7.5*height/20])
	rotate(90,[0,0,1])
	rotate(90,[1,0,0])
	write(letter,h=15*height/20,t=2);
}

// hinged panel
module hinged_panel_no_outer(){
translate([-thick-corner_radius,-height/2,-height/2])
	difference(){
	// cube and cylinders to start
		union(){
		// cube with inside top and bottom cylinders carved out
			difference(){
			// start with clearance cube in corner
				translate([height/2,height/2,height/2])
					rotate(the_angle,the_vector)
						mirror(the_mirror)
							translate([hinge_mover-thick,0,0])
								rounded_cube();
			// take away inside top cylinder with clearance
				translate([height+2*(-hinge_mover+thick),height,0])
						rotate(90,[0,0,1])
							translate([0,0,stacking_clearance+outside_height+inside_height])
								cylinder(	h=outside_height+fudge,
												r1=hinge_radius+fudge+hinge_clearance,
												r2=hinge_radius+fudge+hinge_clearance);
			// take away inside bottom cylinder with clearance
				translate([height+2*(-hinge_mover+thick),height,0])
						rotate(90,[0,0,1])
							translate([0,0,stacking_clearance-fudge])
								cylinder(	h=outside_height+fudge,
												r1=hinge_radius+fudge+hinge_clearance,
												r2=hinge_radius+fudge+hinge_clearance);
			}

		// inside hinge cylinder
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height])
							cylinder(	h=inside_height,
											r1=hinge_radius,
											r2=hinge_radius);
		// attacher for inside hinge cylinder
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height])
							rotate(45,[0,0,1])
								translate([-.8*hinge_radius,0,0])
									cube([1.6*hinge_radius,2*hinge_radius,inside_height]);
		// inside hinge top cone
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height+inside_height])
							cylinder(	h=cone_height,
											r1=hinge_radius,
											r2=0);
		// inside hinge bottom cone
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height-cone_height])
							cylinder(	h=cone_height,
											r1=0,
											r2=hinge_radius);
		}

	}
}

// hinged panel
module hinged_panel_no_inner(){
translate([-thick-corner_radius,-height/2,-height/2])
	difference(){
	// cube and cylinders to start
		union(){
		// cube with inside top and bottom cylinders carved out
			difference(){
			// start with clearance cube in corner
				translate([height/2,height/2,height/2])
					rotate(the_angle,the_vector)
						mirror(the_mirror)
							translate([hinge_mover-thick,0,0])
								rounded_cube();

			}
		// top cylinder on outside hinge
			translate([0,0,stacking_clearance+outside_height+inside_height+hinge_clearance])
				cylinder(	h=outside_height-hinge_clearance-corner_radius/2,
								r1=hinge_radius,
								r2=hinge_radius);
		// bottom cylinder on outside hinge
			translate([0,0,stacking_clearance+corner_radius/2])
				cylinder(	h=outside_height-hinge_clearance-corner_radius/2,
								r1=hinge_radius,
								r2=hinge_radius);

		}
	// take away middle cylinder with clearance
		translate([0,0,stacking_clearance+outside_height-hinge_clearance-fudge])
			cylinder(	h=inside_height+2*hinge_clearance+2*fudge,
							r1=hinge_radius+fudge+hinge_clearance,
							r2=hinge_radius+fudge+hinge_clearance);
	// take away top cone with clearance
		translate([0,0,stacking_clearance+outside_height+inside_height+hinge_clearance-fudge])
			cylinder(h=cone_height, r1=hinge_radius, r2=0);
	// take away bottom cone with clearance
		translate([0,0,stacking_clearance+outside_height-cone_height-hinge_clearance+fudge])
			cylinder(h=cone_height, r1=0, r2=hinge_radius);
	}
}

// hinged panel
module hinged_panel(){
translate([-thick-corner_radius,-height/2,-height/2])
	difference(){
	// cube and cylinders to start
		union(){
		// cube with inside top and bottom cylinders carved out
			difference(){
			// start with clearance cube in corner
				translate([height/2,height/2,height/2])
					rotate(the_angle,the_vector)
						mirror(the_mirror)
							translate([hinge_mover-thick,0,0])
								rounded_cube();
			// take away inside top cylinder with clearance
				translate([height+2*(-hinge_mover+thick),height,0])
						rotate(90,[0,0,1])
							translate([0,0,stacking_clearance+outside_height+inside_height])
								cylinder(	h=outside_height+fudge,
												r1=hinge_radius+fudge+hinge_clearance,
												r2=hinge_radius+fudge+hinge_clearance);
			// take away inside bottom cylinder with clearance
				translate([height+2*(-hinge_mover+thick),height,0])
						rotate(90,[0,0,1])
							translate([0,0,stacking_clearance-fudge])
								cylinder(	h=outside_height+fudge,
												r1=hinge_radius+fudge+hinge_clearance,
												r2=hinge_radius+fudge+hinge_clearance);
			}
		// top cylinder on outside hinge
			translate([0,0,stacking_clearance+outside_height+inside_height+hinge_clearance])
				cylinder(	h=outside_height-hinge_clearance-corner_radius/2,
								r1=hinge_radius,
								r2=hinge_radius);
		// bottom cylinder on outside hinge
			translate([0,0,stacking_clearance+corner_radius/2])
				cylinder(	h=outside_height-hinge_clearance-corner_radius/2,
								r1=hinge_radius,
								r2=hinge_radius);
		// inside hinge cylinder
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height])
							cylinder(	h=inside_height,
											r1=hinge_radius,
											r2=hinge_radius);
		// attacher for inside hinge cylinder
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height])
							rotate(45,[0,0,1])
								translate([-.8*hinge_radius,0,0])
									cube([1.6*hinge_radius,2*hinge_radius,inside_height]);
		// inside hinge top cone
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height+inside_height])
							cylinder(	h=cone_height,
											r1=hinge_radius,
											r2=0);
		// inside hinge bottom cone
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height-cone_height])
							cylinder(	h=cone_height,
											r1=0,
											r2=hinge_radius);
		}
	// take away middle cylinder with clearance
		translate([0,0,stacking_clearance+outside_height-hinge_clearance-fudge])
			cylinder(	h=inside_height+2*hinge_clearance+2*fudge,
							r1=hinge_radius+fudge+hinge_clearance,
							r2=hinge_radius+fudge+hinge_clearance);
	// take away top cone with clearance
		translate([0,0,stacking_clearance+outside_height+inside_height+hinge_clearance-fudge])
			cylinder(h=cone_height, r1=hinge_radius, r2=0);
	// take away bottom cone with clearance
		translate([0,0,stacking_clearance+outside_height-cone_height-hinge_clearance+fudge])
			cylinder(h=cone_height, r1=0, r2=hinge_radius);
	}
}

// module for making rounded cubes from convex hull of corners
module rounded_cube() {
	dist = height/2-corner_radius-stacking_clearance; // this is same as hinge_mover
		hull() {
		// seven of the eight vertices of a cube
			translate([thick,dist,dist])
				sphere(r=corner_radius);
			translate([-thick,dist,dist])
				sphere(r=corner_radius);
			translate([thick,-dist,dist]) // outer hinge corner
				sphere(r=corner_radius);
			translate([-thick,-dist,dist])
				sphere(r=corner_radius);
			translate([thick,dist,-dist])
				sphere(r=corner_radius);
			translate([thick,-dist,-dist]) // outer hinge corner
				sphere(r=corner_radius);
			translate([-thick,-dist,-dist])
				sphere(r=corner_radius);
			translate([-thick,dist,-dist])
				sphere(r=corner_radius);
		}
}

```


[User]
Hey, I'm looking to create a customizable corrugated sign, like the one MathGrrl designed, but I need it to be more flexible and easier to adjust. I've seen a version by RDS02Stang, and that's closer to what I need, but I still want more control.

Here's what I'm thinking:

**Overall Structure:**

*   The sign should be made of hinged, interlocking panels that can be folded like an accordion.
*   Each panel should have a single character on it, and the characters should be configurable in the SCAD file.
*   The whole sign should print fully assembled and without needing any support material.
*   The sign needs to be parametric, so I can change things like height, panel thickness, and hinge size easily.

**Specific Parameters:**

*   **Height:** I need to be able to define the overall height of the panels (e.g., `height = 30;` for 30mm).
*   **Characters:** The code should let me specify how many characters are in the word or phrase, with a reasonable limit, say between 3 and 40 characters. I need to define each character, with a set of allowable characters including upper/lower case letters, numbers, and common symbols. So, I'd define `letter1`, `letter2`, etc, like in the attached file.
*   **Hinge Radius:**  I should be able to set the radius of the hinge connecting the panels (e.g., `hinge_radius = 2;` for 2mm).
*   **Hinge Clearance:** I need a parameter to control the clearance between hinge parts (e.g., `hinge_clearance = 0.75;`).
*   **Panel Thickness:** A parameter to control the thickness of the panels (e.g., `thick = 0.75;`).
*   **Corner Radius:**  Maybe a parameter for the rounded corners of each panel.

**Functionality:**

*   The panels should automatically arrange themselves, alternating the hinge direction so they can fold up correctly.
*   The letter should be centered on each panel.

**Libraries:**

*   I'd like to use the `write/Write.scad` library to handle the text.

I've included the SCAD file as a reference, just in case it's helpful. I'm looking for you to generate the necessary OpenSCAD file(s) that will provide the functionality I've described. I'm not looking to improve the previous file, but instead for something entirely new and more configurable.

[Assistant]
Corrugated_Sign_V4.0.scad:
```
// MathGrrl corrugated sign & RDS02Stang Remix

use <write/Write.scad>

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

/* [Size and Characters] */

// Choose a height for the planels, in mm
height = 30;

// How many characters, including spaces, are in your word or phrase? (Must be between 3 and 40.)
characters = 3;

// Keep entering characters, including spaces, until you are done.
letter1 = "A";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter2 = "B";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter3 = "C";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter4 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter5 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter6 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter7 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter8 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter9 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter10 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter11 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter12 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter13 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter14 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter15 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter16 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter17 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter18 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter19 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter20 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter21 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter22 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter23 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter24 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter25 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter26 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter27 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter28 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter29 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter30 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter31 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter32 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter33 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter34 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter35 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter36 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter37 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter38 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter39 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]
letter40 = "";//[,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,!,?,-,$,#,%,.,0,1,2,3,4,5,6,7,8,9]

/* [Adjustments] */

// Choose a hinge radius (mm)
hinge_radius = 2;

// Choose a hinge clearance factor (mm)
hinge_clearance = .75;

// Choose panel thickness parameter (mm)
thick = .75;

// Other variables that people don't get to choose
$fn=24*1;
fudge = .01*1;
corner_radius = .05*height;
stacking_clearance = .1*3;
outside_height = .4*(height-2*stacking_clearance);
inside_height = (height-2*stacking_clearance)-2*outside_height;
cone_height = 1.4*hinge_radius;
hinge_mover = height/2-corner_radius-stacking_clearance;

/* [Please Ignore] */
letters = [letter1,letter2,letter3,letter4,letter5,letter6,letter7,letter8,letter9,letter10,letter11,letter12,letter13,letter14,letter15,letter16,letter17,letter18,letter19,letter20,letter21,letter22,letter23,letter24,letter25,letter26,letter27,letter28,letter29,letter30,letter31,letter32,letter33,letter34,letter35,letter36,letter37,letter38,letter39,letter40];

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

panel_place_first(letters[0],0);
for  (i=[1:characters-2]){
	panel_place(letters[i],i);
}
panel_place_last(letters[characters-1],characters-1);

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

// completed letter-hinged-panel placer
module panel_place(letter,i){
	translate([i*2*(thick+corner_radius+stacking_clearance),0,0])
	rotate(i*180,[0,1,0])
	rotate(i*180,[0,0,1])
		difference(){
			hinged_panel();
			rotate(i*180,[1,0,0])
			rotate(i*180,[0,0,1]) letter_place(letter);
		}
}

// completed letter-hinged-panel placer for *first* panel
module panel_place_first(letter,i){
	translate([i*2*(thick+corner_radius+stacking_clearance),0,0])
	rotate(i*180,[0,1,0])
	rotate(i*180,[0,0,1])
		difference(){
			hinged_panel_no_outer();
			rotate(i*180,[1,0,0])
			rotate(i*180,[0,0,1]) letter_place(letter);
		}
}

// completed letter-hinged-panel placer for *last* panel
module panel_place_last(letter,i){
	translate([i*2*(thick+corner_radius+stacking_clearance),0,0])
	rotate(i*180,[0,1,0])
	rotate(i*180,[0,0,1])
		difference(){
			hinged_panel_no_inner();
			rotate(i*180,[1,0,0])
			rotate(i*180,[0,0,1]) letter_place(letter);
		}
}

// letter placer
module letter_place(letter){
	translate([thick+corner_radius-1,-4.5*height/20,-7.5*height/20])
	rotate(90,[0,0,1])
	rotate(90,[1,0,0])
	write(letter,h=15*height/20,t=2);
}

// hinged panel
module hinged_panel_no_outer(){
translate([-thick-corner_radius,-height/2,-height/2])
	difference(){
	// cube and cylinders to start
		union(){
		// cube with inside top and bottom cylinders carved out
			difference(){
			// start with clearance cube in corner
				translate([height/2,height/2,height/2])
					rotate(the_angle,the_vector)
						mirror(the_mirror)
							translate([hinge_mover-thick,0,0])
								rounded_cube();
			// take away inside top cylinder with clearance
				translate([height+2*(-hinge_mover+thick),height,0])
						rotate(90,[0,0,1])
							translate([0,0,stacking_clearance+outside_height+inside_height])
								cylinder(	h=outside_height+fudge,
												r1=hinge_radius+fudge+hinge_clearance,
												r2=hinge_radius+fudge+hinge_clearance);
			// take away inside bottom cylinder with clearance
				translate([height+2*(-hinge_mover+thick),height,0])
						rotate(90,[0,0,1])
							translate([0,0,stacking_clearance-fudge])
								cylinder(	h=outside_height+fudge,
												r1=hinge_radius+fudge+hinge_clearance,
												r2=hinge_radius+fudge+hinge_clearance);
			}

		// inside hinge cylinder
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height])
							cylinder(	h=inside_height,
											r1=hinge_radius,
											r2=hinge_radius);
		// attacher for inside hinge cylinder
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height])
							rotate(45,[0,0,1])
								translate([-.8*hinge_radius,0,0])
									cube([1.6*hinge_radius,2*hinge_radius,inside_height]);
		// inside hinge top cone
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height+inside_height])
							cylinder(	h=cone_height,
											r1=hinge_radius,
											r2=0);
		// inside hinge bottom cone
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height-cone_height])
							cylinder(	h=cone_height,
											r1=0,
											r2=hinge_radius);
		}

	}
}

// hinged panel
module hinged_panel_no_inner(){
translate([-thick-corner_radius,-height/2,-height/2])
	difference(){
	// cube and cylinders to start
		union(){
		// cube with inside top and bottom cylinders carved out
			difference(){
			// start with clearance cube in corner
				translate([height/2,height/2,height/2])
					rotate(the_angle,the_vector)
						mirror(the_mirror)
							translate([hinge_mover-thick,0,0])
								rounded_cube();

			}
		// top cylinder on outside hinge
			translate([0,0,stacking_clearance+outside_height+inside_height+hinge_clearance])
				cylinder(	h=outside_height-hinge_clearance-corner_radius/2,
								r1=hinge_radius,
								r2=hinge_radius);
		// bottom cylinder on outside hinge
			translate([0,0,stacking_clearance+corner_radius/2])
				cylinder(	h=outside_height-hinge_clearance-corner_radius/2,
								r1=hinge_radius,
								r2=hinge_radius);

		}
	// take away middle cylinder with clearance
		translate([0,0,stacking_clearance+outside_height-hinge_clearance-fudge])
			cylinder(	h=inside_height+2*hinge_clearance+2*fudge,
							r1=hinge_radius+fudge+hinge_clearance,
							r2=hinge_radius+fudge+hinge_clearance);
	// take away top cone with clearance
		translate([0,0,stacking_clearance+outside_height+inside_height+hinge_clearance-fudge])
			cylinder(h=cone_height, r1=hinge_radius, r2=0);
	// take away bottom cone with clearance
		translate([0,0,stacking_clearance+outside_height-cone_height-hinge_clearance+fudge])
			cylinder(h=cone_height, r1=0, r2=hinge_radius);
	}
}

// hinged panel
module hinged_panel(){
translate([-thick-corner_radius,-height/2,-height/2])
	difference(){
	// cube and cylinders to start
		union(){
		// cube with inside top and bottom cylinders carved out
			difference(){
			// start with clearance cube in corner
				translate([height/2,height/2,height/2])
					rotate(the_angle,the_vector)
						mirror(the_mirror)
							translate([hinge_mover-thick,0,0])
								rounded_cube();
			// take away inside top cylinder with clearance
				translate([height+2*(-hinge_mover+thick),height,0])
						rotate(90,[0,0,1])
							translate([0,0,stacking_clearance+outside_height+inside_height])
								cylinder(	h=outside_height+fudge,
												r1=hinge_radius+fudge+hinge_clearance,
												r2=hinge_radius+fudge+hinge_clearance);
			// take away inside bottom cylinder with clearance
				translate([height+2*(-hinge_mover+thick),height,0])
						rotate(90,[0,0,1])
							translate([0,0,stacking_clearance-fudge])
								cylinder(	h=outside_height+fudge,
												r1=hinge_radius+fudge+hinge_clearance,
												r2=hinge_radius+fudge+hinge_clearance);
			}
		// top cylinder on outside hinge
			translate([0,0,stacking_clearance+outside_height+inside_height+hinge_clearance])
				cylinder(	h=outside_height-hinge_clearance-corner_radius/2,
								r1=hinge_radius,
								r2=hinge_radius);
		// bottom cylinder on outside hinge
			translate([0,0,stacking_clearance+corner_radius/2])
				cylinder(	h=outside_height-hinge_clearance-corner_radius/2,
								r1=hinge_radius,
								r2=hinge_radius);
		// inside hinge cylinder
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height])
							cylinder(	h=inside_height,
											r1=hinge_radius,
											r2=hinge_radius);
		// attacher for inside hinge cylinder
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height])
							rotate(45,[0,0,1])
								translate([-.8*hinge_radius,0,0])
									cube([1.6*hinge_radius,2*hinge_radius,inside_height]);
		// inside hinge top cone
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height+inside_height])
							cylinder(	h=cone_height,
											r1=hinge_radius,
											r2=0);
		// inside hinge bottom cone
			translate([height+2*(-hinge_mover+thick),height,0])
					rotate(90,[0,0,1])
						translate([0,0,stacking_clearance+outside_height-cone_height])
							cylinder(	h=cone_height,
											r1=0,
											r2=hinge_radius);
		}
	// take away middle cylinder with clearance
		translate([0,0,stacking_clearance+outside_height-hinge_clearance-fudge])
			cylinder(	h=inside_height+2*hinge_clearance+2*fudge,
							r1=hinge_radius+fudge+hinge_clearance,
							r2=hinge_radius+fudge+hinge_clearance);
	// take away top cone with clearance
		translate([0,0,stacking_clearance+outside_height+inside_height+hinge_clearance-fudge])
			cylinder(h=cone_height, r1=hinge_radius, r2=0);
	// take away bottom cone with clearance
		translate([0,0,stacking_clearance+outside_height-cone_height-hinge_clearance+fudge])
			cylinder(h=cone_height, r1=0, r2=hinge_radius);
	}
}

// module for making rounded cubes from convex hull of corners
module rounded_cube() {
	dist = height/2-corner_radius-stacking_clearance; // this is same as hinge_mover
		hull() {
		// seven of the eight vertices of a cube
			translate([thick,dist,dist])
				sphere(r=corner_radius);
			translate([-thick,dist,dist])
				sphere(r=corner_radius);
			translate([thick,-dist,dist]) // outer hinge corner
				sphere(r=corner_radius);
			translate([-thick,-dist,dist])
				sphere(r=corner_radius);
			translate([thick,dist,-dist])
				sphere(r=corner_radius);
			translate([thick,-dist,-dist]) // outer hinge corner
				sphere(r=corner_radius);
			translate([-thick,-dist,-dist])
				sphere(r=corner_radius);
			translate([-thick,dist,-dist])
				sphere(r=corner_radius);
		}
}

```


[User]
I'm working on a project to build a small, floating duck robot, and I need a propeller housing, or "hood," for it. I have some basic dimensions in mind, but I'd like a design that's fully parametric so I can easily adjust things later.

The hood should be composed of three cylindrical sections, with a varying radius. There's a front section with an inner radius of `r_front`, a middle section with a radius of `r_middle`, and a back section with a radius of `r_back`. The front section extends forward a distance of `h_front` from the center, and the back section extends backwards a distance of `h_back`. The entire structure should have a uniform thickness of `thinckness`.

I also need a few mounting points. There should be a flat, plate-like surface running the length of the hood with a thickness of `plate_thinckness`. This plate should be positioned such that its top surface is above the top-most point of the cylindrical sections, with an offset of `motor_height / 2`.  The plate should extend from the middle radius at the back, forwards to at least the front radius, and ideally a bit beyond. Additionally, I need a thin cross-support between the front-most portion of the plate to the front cylinder section. Lastly, I will need a mounting point near the front, on the flat plate, that is wide enough to secure a small motor.

I'd like the design to be created in OpenSCAD. Could you generate the necessary `.scad` file(s) for this design, including all of the defined parameters? I do not want any helper libraries or other external dependencies.

[Assistant]
foodoo.scad:
```
r_front = 60;
r_middle = 50;
r_back = 40;
h_front = 30;
h_back = 30;
thinckness = 1;

plate_thinckness = 3;
motor_width = 20;
motor_height = 15;

//front
translate([0,0,-h_front/2]) {
    difference() {
     cylinder(h = h_front, r1 = r_front+thinckness, r2 = r_middle+thinckness, center = true);
        cylinder(h = h_front+2, r1 = r_front, r2 = r_middle, center = true);
    }
}

//back
translate([0,0,h_back/2]) {
    difference() {
        cylinder(h = h_back, r1 = r_middle+thinckness, r2 = r_back+thinckness, center = true);
        cylinder(h = h_back+2, r1 = r_middle, r2 = r_back, center = true);
    }
}

translate([0,plate_thinckness/2+motor_height/2,h_back/2]) {
    cube([motor_width,plate_thinckness,h_back],center=true);
}

translate([0,plate_thinckness/2+r_front,h_back/2]) {
    cube([motor_width,plate_thinckness,h_back],center=true);
}

translate([0,r_front-(r_front-motor_height/2-plate_thinckness/2)/2,h_back/2]) {
    cube([plate_thinckness,r_front-motor_height/2-plate_thinckness/2,h_back],center=true);
}

```


[User]
I need a parametric flanged wheel design for 3D printing. I want to be able to control things like the axle hole diameter, the outer wheel diameter (not including the flange), the overall wheel height, the flange height, the number of spokes, and the width of the spokes and other features. It would be great if I could also choose to have the flange on only one side of the wheel or both sides.

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

*   `hub_diameter`: Diameter of the hole for the axle.
*   `outer_diameter`: Diameter of the wheel itself (excluding the flange).
*   `height`: Overall height/thickness of the wheel.
*   `flange_height`: Height the flange extends from the wheel.
*   `spokes`: Number of spokes connecting the hub to the rim.
*   `feature_width`: Width of all the spokes and structural features.
*   `flange_on_one_side_only`: A boolean value (0 for both sides, 1 for only one side) to control if we want a flange on one or both sides.

The core pieces should be:

1.  **Hub:** A cylinder with a hole through the center for the axle.
2.  **Rim:** A cylinder with the outer diameter, and then the flange(s) which will project from one or both sides.
3.  **Spokes:** The connectors between the hub and the rim.
4. **Wheel**: The complete wheel assembly.

I'm thinking we can do a `Hub` module, a `Rim` module, a `Spokes` module, and finally a `wheel` module to tie it all together, just like in the existing code I've been playing with. I don't need anything too fancy - just a clean, functional design. I don't want you to use an existing OpenSCAD library for this.

[Assistant]
Flanged_Wheel.scad:
```
/*
 * Parametric Flanged Wheel
 */

// what diameter hole do we need for the axle
hub_diameter = 8;

// outer diameter of wheel, does not include flange
outer_diameter = 30;

// Height/length through wheel
height = 30;

// How far the flange extends
flange_height = 5;

// how many spokes do we want
spokes = 3;

// Width of all features/walls
feature_width = 2;

// Flange on one side only? (set to 1 to enable)
flange_on_one_side_only = 0;

/*** end of parameters */

outer_width = height;
hub_length = height;
$fn = 200;

// draw me one
wheel(hub_diameter,hub_length,outer_diameter,outer_width,spokes);

// draw the hub with hole for axle
module Hub(hub_radius=4, outer_width=10)
{
	difference() {
		cylinder(r=hub_radius+feature_width, h=outer_width);
		translate([0,0,-2]) cylinder(r=hub_radius,h=outer_width+8);
	}
}

// Draw the rim, with flange_height flange
module Rim(outer_radius=20,outer_width=10)
{
	difference(){
		union(){
            if (flange_on_one_side_only != 1) {
                translate([0,0,outer_width - 1.5]) cylinder(r=outer_radius+flange_height, h=1.5);
            }
			cylinder(r=outer_radius+flange_height, h=1.5);
			cylinder(r=outer_radius, h=outer_width);
		}
		translate([0,0,-2]) cylinder(r=outer_radius-feature_width,h=outer_width+8);
	}
}

// draw the spokes holding rim to hub
module Spokes(hub_radius=4, outer_radius=20, outer_width=10, steps=4)
{
	for (angle=[0:360/steps:360]) {
		rotate([0,0,angle]) {
			translate([hub_radius+1,-1,0]) {
				cube( size=[outer_radius-feature_width-hub_radius,feature_width,outer_width], center=false);
			}
		}
	}
}

module wheel(hub_dia=8,hub_length=10,outer_dia=40,outer_width=10,spokes=6)
{
	hub_radius = hub_dia * 0.5;
	outer_radius = outer_dia * 0.5;
	union() {
		Rim(outer_radius, outer_width);
        translate ([0,0,(outer_width - hub_length) / 2]) {
            Hub(hub_radius, hub_length);
            Spokes(hub_radius, outer_radius, min(hub_length,outer_width), spokes);
        }
	}
}
```


[User]
I need a parametric OpenSCAD design for a battery holder for 18650 cells. I'd like to be able to specify the number of rows and columns, and have it lay out the cells in a hexagonal grid. I need to specify the cell diameter and the thickness of the rim around each cell. Also the height of the support under the cell, as well as the cell depth and I need to be able to spec the width and thickness for tabs to connect the cells.

Specifically, here are the parameters I need to control:

*   `pack_x`: Number of rows of cells (range 1-20)
*   `pack_y`: Number of columns of cells (range 1-20)
*   `cell_dia`: Diameter of the 18650 cell
*   `cell_rim_thiknes`: Thickness of the material around each cell
*   `cell_rim_hight`: Height of the support under each cell
*   `cell_holder_hight`: The depth of the cell holder
*   `tab_width`: Width of the tab wires
*    `tab_thickness`: Thickness of the tab wires

The cell layout should be a hexagonal grid. I need to include support structures to hold the cells, and the fill between the cells should also be included.  Also tab slots/cutouts for connecting the cells.

I'd like all of this in a single SCAD file please and can you make sure that $fn is 48?

[Assistant]
18650.scad:
```
// number of rows
pack_x = 3; // [1:20]
//number of columns
pack_y = 3; // [1:20]
//Cell diameter
cell_dia = 18.8;
//thickness around cell
cell_rim_thiknes = 0.8;
//hight of support under cell
cell_rim_hight = 2.5;
//cell depth
cell_holder_hight = 8;
//tab wire width
tab_width = 7;
//tab wire thickness
tab_thickness = 1.5;
// number of faces in circle
$fn=48;

//CUSTOMIZER VARIABLES END
/*[hidden]*/

x_offset = (cell_dia+cell_rim_thiknes)/2;
y_offset = 0;
module cell_holder(){
    difference(){
        cylinder(r = (cell_dia/2)+cell_rim_thiknes,h = cell_holder_hight);
        translate([0,0,cell_rim_hight]){
                cylinder(r = cell_dia/2, h =cell_holder_hight);
            }
        translate([0,0,-1]){
            cylinder(r = (cell_dia/2-cell_rim_thiknes), h = cell_holder_hight+2);
        }
    }
}

module x_row(){
    for(i=[0 : pack_x-1]){
        translate([(cell_dia+cell_rim_thiknes)*i,0,0]){
            cell_holder();
            if(i != pack_x-1){
                fill();
                mirror([0,1,0]) fill();
            }
        }
    }
}
module x_tab(){
    translate([0,-tab_width/2,cell_rim_hight-tab_thickness])
    cube(size = [((pack_x-1) * cell_dia)+(pack_x-1)*cell_rim_thiknes, tab_width,cell_holder_hight]);
}
module y_tab_l(){
    translate([(cell_dia+cell_rim_thiknes)*0.25,((cell_dia+cell_rim_thiknes)/4)*1.732,(cell_holder_hight/2)+cell_rim_hight-tab_thickness]){
        rotate(a=-60, v=[0,0,1])
            cube([cell_dia+cell_rim_thiknes, tab_width, cell_holder_hight], center = true);
    }
}

module y_tab_r(){
    translate([(cell_dia+cell_rim_thiknes)*0.25,((cell_dia+cell_rim_thiknes)/4)*1.732,(cell_holder_hight/2)+cell_rim_hight-tab_thickness]){
        rotate(a=60, v=[0,0,1])
            cube([cell_dia+cell_rim_thiknes, tab_width, cell_holder_hight], center = true);
    }
}

module ring(offset){
    difference(){
        translate([0,0,-(offset*0.5)]){
            cylinder(r = ((cell_dia/2)+cell_rim_thiknes)*1.5,h = cell_holder_hight+offset);
        }
        translate([0,0,-(offset*0.5)-1]){
            cylinder(r = ((cell_dia/2)+cell_rim_thiknes)*0.95,h = cell_holder_hight+offset+2);
        }
    }
}
module fill(){
    intersection() {
        ring(0);
        translate([cell_dia+cell_rim_thiknes,0,0]) ring(1);
        translate([(cell_dia+cell_rim_thiknes)/2,(((cell_dia+cell_rim_thiknes)/2)*1.732),0])ring(2);
    }
}

difference(){
    union(){
        // cell holders
        for(j = [0 : pack_y-1]){
            y_offset = (((cell_dia+cell_rim_thiknes)/2)*1.732*j);
            if((j%2) == 0){
                translate([0,y_offset,0]) x_row();
            }else{
                translate([x_offset,y_offset,0]) x_row();
            }
        }
        if(pack_y > 1){
            // outside fill
            for(j = [0 : pack_y-2]){
                y_offset = (((cell_dia+cell_rim_thiknes)/2)*1.732*j);
                if((j%2) != 0){
                    translate([(cell_dia+cell_rim_thiknes)/2,y_offset,0])
                    rotate(a=120, v=[0,0,1])
                    fill();
                    translate([((cell_dia+cell_rim_thiknes)/2)+(cell_dia+cell_rim_thiknes)*(pack_x-1),y_offset,0])
                    rotate(a=60, v=[0,0,1])
                    fill();
                }else{
                    translate([0,y_offset,0])
                    rotate(a=60, v=[0,0,1])
                    fill();
                    translate([(cell_dia+cell_rim_thiknes)*(pack_x-1),y_offset,0])
                    fill();
                }
            }
        }
    }

    // slots for tabwires
    if(tab_thickness != 0){
        for(j = [0 : pack_y-1]){
            y_offset = (((cell_dia+cell_rim_thiknes)/2)*1.732*j);
            if((j%2) == 0){
                translate([0,y_offset,0]) x_tab();
            }else{
                translate([x_offset,y_offset,0]) x_tab();
            }
        }
    //}
        if(pack_y > 1){
            for(j = [0 : pack_y-2]){
                for(k = [0 : pack_x-1]){
                    translate([(cell_dia+cell_rim_thiknes)*k,(((cell_dia+cell_rim_thiknes)/2)*1.732*j),0])
                    if((j%2) == 0){
                        y_tab_r();
                    }else{
                        y_tab_l();
                    }
                }
            }
        }
    }
}

```
18650.scad:
```
// number of rows
pack_x = 3; // [1:20]
//number of columns
pack_y = 3; // [1:20]
//Cell diameter
cell_dia = 18.8;
//thickness around cell
cell_rim_thiknes = 0.8;
//hight of support under cell
cell_rim_hight = 2.5;
//cell depth
cell_holder_hight = 8;
//tab wire width
tab_width = 7;
//tab wire thickness
tab_thickness = 1.5;
// number of faces in circle
$fn=48;

//CUSTOMIZER VARIABLES END
/*[hidden]*/

x_offset = (cell_dia+cell_rim_thiknes)/2;
y_offset = 0;
module cell_holder(){
    difference(){
        cylinder(r = (cell_dia/2)+cell_rim_thiknes,h = cell_holder_hight);
        translate([0,0,cell_rim_hight]){
                cylinder(r = cell_dia/2, h =cell_holder_hight);
            }
        translate([0,0,-1]){
            cylinder(r = (cell_dia/2-cell_rim_thiknes), h = cell_holder_hight+2);
        }
    }
}

module x_row(){
    for(i=[0 : pack_x-1]){
        translate([(cell_dia+cell_rim_thiknes)*i,0,0]){
            cell_holder();
            if(i != pack_x-1){
                fill();
                mirror([0,1,0]) fill();
            }
        }
    }
}
module x_tab(){
    translate([0,-tab_width/2,cell_rim_hight-tab_thickness])
    cube(size = [((pack_x-1) * cell_dia)+(pack_x-1)*cell_rim_thiknes, tab_width,cell_holder_hight]);
}
module y_tab_l(){
    translate([(cell_dia+cell_rim_thiknes)*0.25,((cell_dia+cell_rim_thiknes)/4)*1.732,(cell_holder_hight/2)+cell_rim_hight-tab_thickness]){
        rotate(a=-60, v=[0,0,1])
            cube([cell_dia+cell_rim_thiknes, tab_width, cell_holder_hight], center = true);
    }
}

module y_tab_r(){
    translate([(cell_dia+cell_rim_thiknes)*0.25,((cell_dia+cell_rim_thiknes)/4)*1.732,(cell_holder_hight/2)+cell_rim_hight-tab_thickness]){
        rotate(a=60, v=[0,0,1])
            cube([cell_dia+cell_rim_thiknes, tab_width, cell_holder_hight], center = true);
    }
}

module ring(offset){
    difference(){
        translate([0,0,-(offset*0.5)]){
            cylinder(r = ((cell_dia/2)+cell_rim_thiknes)*1.5,h = cell_holder_hight+offset);
        }
        translate([0,0,-(offset*0.5)-1]){
            cylinder(r = ((cell_dia/2)+cell_rim_thiknes)*0.95,h = cell_holder_hight+offset+2);
        }
    }
}
module fill(){
    intersection() {
        ring(0);
        translate([cell_dia+cell_rim_thiknes,0,0]) ring(1);
        translate([(cell_dia+cell_rim_thiknes)/2,(((cell_dia+cell_rim_thiknes)/2)*1.732),0])ring(2);
    }
}

difference(){
    union(){
        // cell holders
        for(j = [0 : pack_y-1]){
            y_offset = (((cell_dia+cell_rim_thiknes)/2)*1.732*j);
            if((j%2) == 0){
                translate([0,y_offset,0]) x_row();
            }else{
                translate([x_offset,y_offset,0]) x_row();
            }
        }
        if(pack_y > 1){
            // outside fill
            for(j = [0 : pack_y-2]){
                y_offset = (((cell_dia+cell_rim_thiknes)/2)*1.732*j);
                if((j%2) != 0){
                    translate([(cell_dia+cell_rim_thiknes)/2,y_offset,0])
                    rotate(a=120, v=[0,0,1])
                    fill();
                    translate([((cell_dia+cell_rim_thiknes)/2)+(cell_dia+cell_rim_thiknes)*(pack_x-1),y_offset,0])
                    rotate(a=60, v=[0,0,1])
                    fill();
                }else{
                    translate([0,y_offset,0])
                    rotate(a=60, v=[0,0,1])
                    fill();
                    translate([(cell_dia+cell_rim_thiknes)*(pack_x-1),y_offset,0])
                    fill();
                }
            }
        }
    }

    // slots for tabwires
    if(tab_thickness != 0){
        for(j = [0 : pack_y-1]){
            y_offset = (((cell_dia+cell_rim_thiknes)/2)*1.732*j);
            if((j%2) == 0){
                translate([0,y_offset,0]) x_tab();
            }else{
                translate([x_offset,y_offset,0]) x_tab();
            }
        }
    //}
        if(pack_y > 1){
            for(j = [0 : pack_y-2]){
                for(k = [0 : pack_x-1]){
                    translate([(cell_dia+cell_rim_thiknes)*k,(((cell_dia+cell_rim_thiknes)/2)*1.732*j),0])
                    if((j%2) == 0){
                        y_tab_r();
                    }else{
                        y_tab_l();
                    }
                }
            }
        }
    }
}

```


[User]
I need an OpenSCAD design for a base with four columns, kind of like a stand for a circuit board. I've got some specific dimensions I need to be able to adjust.

The base should be a rectangular solid, and I need to be able to specify its width, depth, and thickness. Then, I need four cylindrical posts or columns that sit on top of this base, one near each corner of the rectangle. I want to be able to control the distance between the posts, both side to side and front to back, and also the distance from the left and front edges of the base to the centers of the posts.

For the posts themselves, I need to be able to set the diameter and the height above the base. Each post needs a hole through the center for a screw. I need to be able to control the diameter of this screw hole too.  I'd also like to be able to add optional mounting holes to the base itself, so I need to be able to specify their diameter and how far they're inset from the edges of the base.

Finally, since screws are a thing, I would like the ability to add countersink or counterbore at the base of the holes. I have a diameter for the screw holes, so I need the ability to have that hole become a counterbore with a slightly larger diameter and a depth going into the base, so that the screws sit flush.

I think that's all the adjustability I need for this simple model.  No need to do any specific file structures or anything. Could you make sure it's well-commented so I can understand what each part does? I'm thinking I don't need to use any external libraries for this.

[Assistant]
Four_Columns_on_a_Base_Rev_1a.scad:
```
//Circuit Board Holder

// Gather Parameters
/* [Base Dimensions]*/
// Base Width (All dimensions in mm)
BaseSideToSide = 120;
// Base Depth
BaseFrontToBack=80;
// Base thickness
BaseThickness = 4;
// Side to side distance between post centers
/* [Post Locations] */
// Side to Side distance between post centers
PostSideToSide = 58;
// Front to back distance between post centers
PostFrontToBack = 50;
// Distance from left edge to left post centers
PostFromLeft = 15;
// Distance from front edge to front post centers
PostFromFront = 17;
/* [Post and Hole Sizes] */
// Post Diameter
PostDia = 5;
// Post Height above Base
PostHeight=8;
// PostScrew Hole Diameter
PostHoleDia = 2.5;
//Mounting hole diameter (use 0 for no mounting holes)
MountHoleDia = 4;
//Mounting hole inset from base edges.
MountHoleInset = 5;

/* [Hidden] */
$fn=60;

// Modules

module post(Phgt, Pdia, Xloc, Yloc) {

    translate([Xloc, Yloc, 0]) {
    cylinder(h=Phgt, d=Pdia);
        }
    }

// Calculate Dimensions
TotalPostHeight = PostHeight + BaseThickness;

/* First join the base and posts, then join the post holes, then join the base indents, then join the mounting holes, then subtract the groups of joined holes and indents from the first joined group of base plus posts. */

difference() {
 // join the base and posts
union() {
cube([BaseSideToSide, BaseFrontToBack, BaseThickness]);
post(TotalPostHeight, PostDia, PostFromLeft, PostFromFront);
post(TotalPostHeight, PostDia, PostFromLeft + PostSideToSide, PostFromFront);
post(TotalPostHeight, PostDia, PostFromLeft, PostFromFront + PostFrontToBack);
post(TotalPostHeight, PostDia, PostFromLeft + PostSideToSide, PostFromFront + PostFrontToBack);
}
 // join the post screw holes to be subtracted
union() {
post(1.1*TotalPostHeight, PostHoleDia, PostFromLeft, PostFromFront);
post(1.1*TotalPostHeight, PostHoleDia, PostFromLeft + PostSideToSide, PostFromFront);
post(1.1*TotalPostHeight, PostHoleDia, PostFromLeft, PostFromFront + PostFrontToBack);
post(1.1*TotalPostHeight, PostHoleDia, PostFromLeft + PostSideToSide, PostFromFront + PostFrontToBack);
}
/*
// join the post screw counter bore on bottom face
union() {
post(BaseThickness/2, 2 * PostHoleDia, PostFromLeft, PostFromFront);
post(BaseThickness/2, ,2 * PostHoleDia, PostFromLeft + PostSideToSide, PostFromFront);
post(BaseThickness/2, ,2 * PostHoleDia, PostFromLeft, PostFromFront + PostFrontToBack);
post(BaseThickness/2, ,2 * PostHoleDia, PostFromLeft + PostSideToSide, PostFromFront + PostFrontToBack);
}
*/
 // join the base mounting holes
 union() {
  post(1.1*BaseThickness, MountHoleDia,  BaseSideToSide/2, MountHoleInset);
  post(1.1*BaseThickness, MountHoleDia,  BaseSideToSide/2, BaseFrontToBack - MountHoleInset);
   post(1.1*BaseThickness, MountHoleDia,  MountHoleInset, BaseFrontToBack/2);
  post(1.1*BaseThickness, MountHoleDia,  BaseSideToSide - MountHoleInset, BaseFrontToBack/2);
}
}

```
Four_Columns_on_a_Base_Rev_1.scad:
```
//Circuit Board Holder

// Gather Parameters
/* [Base Dimensions]*/
// Base Width (All dimensions in mm)
BaseSideToSide = 120;
// Base Depth
BaseFrontToBack=80;
// Base thickness
BaseThickness = 4;
// Side to side distance between post centers
/* [Post Locations] */
// Side to Side distance between post centers
PostSideToSide = 58;
// Front to back distance between post centers
PostFrontToBack = 50;
// Distance from left edge to left post centers
PostFromLeft = 15;
// Distance from front edge to front post centers
PostFromFront = 17;
/* [Post and Hole Sizes] */
// Post Diameter
PostDia = 5;
// Post Height above Base
PostHeight=8;
// PostScrew Hole Diameter
PostHoleDia = 2.5;
//Mounting hole diameter (use 0 for no mounting holes)
MountHoleDia = 4;
//Mounting hole inset from base edges.
MountHoleInset = 5;

/* [Hidden] */
$fn=60;

// Modules

module post(Phgt, Pdia, Xloc, Yloc) {

    translate([Xloc, Yloc, 0]) {
    cylinder(h=Phgt, d=Pdia);
        }
    }

// Calculate Dimensions
TotalPostHeight = PostHeight + BaseThickness;

/* First join the base and posts, then join the post holes, then join the base indents, then join the mounting holes, then subtract the groups of joined holes and indents from the first joined group of base plus posts. */

difference() {
 // join the base and posts
union() {
cube([BaseSideToSide, BaseFrontToBack, BaseThickness]);
post(TotalPostHeight, PostDia, PostFromLeft, PostFromFront);
post(TotalPostHeight, PostDia, PostFromLeft + PostSideToSide, PostFromFront);
post(TotalPostHeight, PostDia, PostFromLeft, PostFromFront + PostFrontToBack);
post(TotalPostHeight, PostDia, PostFromLeft + PostSideToSide, PostFromFront + PostFrontToBack);
}
 // join the post screw holes to be subtracted
union() {
post(1.1*TotalPostHeight, PostHoleDia, PostFromLeft, PostFromFront);
post(1.1*TotalPostHeight, PostHoleDia, PostFromLeft + PostSideToSide, PostFromFront);
post(1.1*TotalPostHeight, PostHoleDia, PostFromLeft, PostFromFront + PostFrontToBack);
post(1.1*TotalPostHeight, PostHoleDia, PostFromLeft + PostSideToSide, PostFromFront + PostFrontToBack);
}
// join the post screw indents on bottom face
union() {
post(PostHoleDia,2 * PostHoleDia, PostFromLeft, PostFromFront);
post(PostHoleDia,2 * PostHoleDia, PostFromLeft + PostSideToSide, PostFromFront);
post(PostHoleDia,2 * PostHoleDia, PostFromLeft, PostFromFront + PostFrontToBack);
post(PostHoleDia,2 * PostHoleDia, PostFromLeft + PostSideToSide, PostFromFront + PostFrontToBack);
}

 // join the base mounting holes
 union() {
  post(1.1*BaseThickness, MountHoleDia,  BaseSideToSide/2, MountHoleInset);
  post(1.1*BaseThickness, MountHoleDia,  BaseSideToSide/2, BaseFrontToBack - MountHoleInset);
   post(1.1*BaseThickness, MountHoleDia,  MountHoleInset, BaseFrontToBack/2);
  post(1.1*BaseThickness, MountHoleDia,  BaseSideToSide - MountHoleInset, BaseFrontToBack/2);
}
}

```


[User]
I'd like a customizable flower bed marker design in OpenSCAD. The base design should be a flower shape with a central disc and five petals, similar to the example I've included, but I'd like it to be more parametric, with adjustable petal shapes and spacing. I also want to be able to control the overall size, thickness, and the size of the central disc.

I need to be able to emboss text on the flower petals. In the example, the text is on the top of the petals, I'd prefer it if the text was embossed on the sides of the petals facing out from the center. The text should be fully customizable, including font, style, and size. There should be an option to add text to all of the petals.

The marker should also have a spike to insert into the ground. The spike should be a single, central spike, not the two perpendicular spikes like in the example. It needs to be adjustable in terms of height and diameter at both the base and the tip. I'm not worried about being able to customize the tip shape, a simple conical point will work for my needs.

The flower design also has a grill pattern on the center disk. This isn't important for me - just a plain disc will be fine.

Finally, it needs to be easily adjustable to switch to a different language if needed, so please do the labeling or some system to identify strings for potential translation.

So, to summarize, I need a parametric flower bed marker with adjustable:
*   Overall size, thickness
*   Central disc size
*   Number of petals
*   Petal shape (e.g. a curve parameter)
*   Petal spacing
*   Text on the sides of the petals (customizable content, font, style, size)
*   Spike height and diameters
*   Ability to easily translate text strings

I'm not planning on using external libraries but if you have some you think would be great, I'm happy to consider them.

[Assistant]
Flower.scad:
```
// Evelyn Boettcher 20160227
// Edit to change flower message.

thk   = 6;
lgth  = 50;
step  = 5;
$fn   = 40;
font  = "Liberation Sans";
style = ":style=Bold";
fntsz = 12;
wf    = 9;

//Main Program
translate([0,0,1.25]) spike();
 flower();

// -----------------------------------
//EDIT the Words Here
module N(){ offset(0.2) text("No", size=fntsz, halign="center", valign="center", font = str(font,style));}
module S(){ offset(0.15) text("Spraying", size=fntsz, halign="center", valign="center", font = str(font,style));}
module F(){ offset(0.15) text("Flowers", size=fntsz, halign="center", valign="center",  font = str(font,style));}
module G(){ offset(0.15) text("Growing", size=fntsz, halign="center", valign="center",  font = str(font,style));}

module flower(){
    difference(){
       union(){
        cylinder(r1=lgth/5,r2=lgth/2, h=thk, center=true);
        translate([lgth/2*sin(0),lgth/2*cos(0),0]) cylinder(r1=lgth/10,r2=lgth/2, h=thk, center=true);
        translate([lgth/2*sin(72),lgth/2*cos(72),0])cylinder(r1=lgth/10,r2=lgth/2, h=thk, center=true);
        translate([lgth/2*sin(72*2),lgth/2*cos(72*2),0])cylinder(r1=lgth/10,r2=lgth/2, h=thk, center=true);
        translate([lgth/2*sin(72*3),lgth/2*cos(72*3),0])cylinder(r1=lgth/10,r2=lgth/2, h=thk, center=true);
        translate([lgth/2*sin(72*4),lgth/2*cos(72*4),0]) cylinder(r1=lgth/10,r2=lgth/2, h=thk, center=true);
       }
     translate([0,lgth/2+wf,thk/2]) linear_extrude(height = 2.5, convexity = 3, center=true) N();
     translate([0,lgth/2-15+wf,thk/2]) linear_extrude(height = 2.5, convexity = 3, center=true) S();
     translate([0,-lgth/2+7.5,thk/2]) linear_extrude(height = 2.5, convexity = 3, center=true)G();
     translate([0,-lgth/2-wf+4.5,thk/2]) linear_extrude(height = 2.5, convexity = 3, center=true)F();
   scale([.5,.5,1]) center(); }
}

module spike(){
    rotate([190,0,180]) union(){
    scale([2,.5,1]) cylinder(h=110,r1=5,r2=1);
    scale([.5,2,1]) cylinder(h=110,r1=5,r2=1);
    }
}
//Flower Center
module center(){
    difference(){
        cylinder(r=lgth/2, h=thk, center=true);
        union(){
          grill();
          rotate([0,0,90])grill();
    }   }}

// Grill pattern on the center flower
module grill(){
        cube([lgth, step, thk],center=true);
        translate([0,2*step,0]) cube([lgth, step, thk],center=true);
        translate([0,4*step,0])cube([lgth, step, thk],center=true);
        translate([0,-2*step,0])cube([lgth, step, thk],center=true);
        translate([0,-4*step,0])cube([lgth, step, thk],center=true);
        }

//}
```


[User]
I'd like a parametric OpenSCAD design for a standard six-sided die. It should be a cube with rounded edges, and have the standard dot patterns for each number.

The main parameters I'd like to control are:

*   `size`: The overall size of the die, so I can make it bigger or smaller.
*   `angles`: The roundness of the edges of the cube - like how much they're cut off.

The actual "dot" indentations should have their diameter and height tied to the numbers they represent; that is, the hole for '1' is different than the hole for '2' and so on. The sizes for the holes should vary per dot value, they can be hardcoded based on an array. I will provide the array that should look like this: `hole_width=[4,3,2,3,2.4,2]; hole_height=[3,2,2,1,1,1];`.
The dot patterns should be arranged correctly for each number, like on a normal die.  I don't need any extra features beyond that.

I'm looking for something pretty simple and clean, no need to get too fancy. Just a functional and customizable die. I'm not using any special libraries, just standard OpenSCAD features.

[Assistant]
parametric_dice.scad:
```
/**
    David Tre (https://github.com/DavidTre07/)
    02/2016

    Parametric Dice

    Licence: Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)
    http://creativecommons.org/licenses/by-nc-sa/3.0/
*/

// - Size of the dice - Taille du dé
size=15;//[11:1:30]
// - Size of the angles - Taille des angles
angles=3;//[0:1:6]

/* [Hidden] */
artefact=0.05;

module dice_empty() {
    minkowski() {
        //Total of internal_size and angles must be equal to size
        //internal_size=3*size/4;
        //angles=size/4;
        internal_size=(8-angles)*size/8;
        external_size=angles*size/8;
        cube([internal_size,internal_size,internal_size]);
        translate([external_size/2,external_size/2,external_size/2]) sphere(d=external_size,$fn=100);
    }
}

module hole(hsize=1) { //weight calculation with hole_width and hole_height and number of holes
    //[1]=1 hole * 6 * 2 =12 or [6]=6 holes * 2 * 1 =12
    hole_width=[4,3,2,3,2.4,2];
    hole_height=[3,2,2,1,1,1];
    cylinder(d=hole_width[hsize-1],h=hole_height[hsize-1],$fn=100);
}

difference() {
    dice_empty();
    rotate ([180, 0, 0]) //1
        translate([size/2,-size/2,-size-artefact])
            translate([0,0,0]) hole(1);
    rotate ([0, 0, 0]) //6
        translate([size/3,size/4,-artefact]) {
            translate ([0,0,0])          hole(6);
            translate([0,size/4,0])      hole(6);
            translate([0,size/2,0])      hole(6);
            translate([size/3,0,0])      hole(6);
            translate([size/3,size/4,0]) hole(6);
            translate([size/3,size/2,0]) hole(6);
        }
    rotate ([90, 0, 180]) //2
        translate([-size/3,size/3,-artefact]) {
            translate([0,size/3,0])  hole(2);
            translate([-size/3,0,0]) hole(2);
        }
    rotate ([90, 0, 0]) //5
        translate([size/3,size/3,-size-artefact]) {
            translate([0,0,0])           hole(5);
            translate([0,size/3,0])      hole(5);
            translate([size/3,0,0])      hole(5);
            translate([size/3,size/3,0]) hole(5);
            translate([size/6,size/6,0]) hole(5);
        }
    rotate ([0, 90, 180]) //3
        translate([-size/3,-size/3,-size-artefact]) {
            translate([0,0,0])             hole(3);
            translate([-size/3,-size/3,0]) hole(3);
            translate([-size/6,-size/6,0]) hole(3);
        }
    rotate ([0, 90, 0]) //4
        translate([-size/3,size/3,-artefact]) {
            translate([0,0,0])            hole(4);
            translate([-size/3,size/3,0]) hole(4);
            translate([-size/3,0,0])      hole(4);
            translate([0,size/3,0])       hole(4);
        }
}

```


[User]
Hey there, I'm trying to design a replacement gear for my son's Power Wheels, and it needs to have two rows of teeth, stacked vertically. I found some good code for a single customizable involute gear using the `MCAD/involute_gears.scad` library. What I'd like is a parametric design that lets me control both of the gears individually, and then positions the top one on top of the bottom one.

For the bottom gear, I need parameters like:

*   `bottom_number_of_teeth`: The number of teeth for the bottom gear.
*   `bottom_circular_pitch`: Controls the size of the teeth for the bottom gear.
*   `bottom_pressure_angle`:  Controls the shape of the teeth for the bottom gear.
*   `bottom_clearance`: Gap between the root of the bottom teeth and the tip of the meshing gear's teeth.
*   `bottom_gear_thickness`: Thickness of the bottom gear plate.
*   `bottom_rim_thickness`: Thickness of the bottom gear at the rim (including the teeth).
*   `bottom_rim_width`: Radial distance from the root of the teeth to the inside of the rim of the bottom gear.
*   `bottom_hub_thickness`: Thickness of the bottom hub.
*   `bottom_hub_diameter`: Diameter of the bottom hub.
*   `bottom_bore_diameter`: Size of the hole in the center of the bottom gear.
*  `bottom_circles`: Number of circular holes to cut in the gear plate of the bottom gear.
*  `bottom_backlash`: The space between the teeth when the gear is meshing correctly for the bottom gear.
*   `bottom_twist`: For helical gears - not needed for this.
*  `bottom_involute_facets`: Number of facets in one side of the involute shape for the bottom gear teeth.

Then, I need the same set of parameters for the top gear, but prefixed with "top\_" instead of "bottom\_" like so:
*   `top_number_of_teeth`
*    `top_circular_pitch`
*    `top_pressure_angle`
*   `top_clearance`
*  `top_gear_thickness`
*   `top_rim_thickness`
*   `top_rim_width`
*   `top_hub_thickness`
*  `top_hub_diameter`
*  `top_bore_diameter`
* `top_circles`
*  `top_backlash`
*   `top_twist`
*   `top_involute_facets`

The top gear should be positioned so that its bottom surface is resting on the top of the hub of the bottom gear. I'd like the whole thing to be generated as a single object.  I'm using OpenSCAD.

[Assistant]
gear_code.scad:
```
use <MCAD/involute_gears.scad>

00_build_plate = 0; //[0:Replicator 2,1:Replicator,3:Thing-o-Matic]

01_number_of_teeth = 53;

//Controls the size of the teeth (and hence the size of the gear)
02_circular_pitch =  180;

//Controls the shape of the teeth
03_pressure_angle = 21;

//The gap between the root between teeth and the teeth point on a meshing gear
04_clearance = 1;

//the thickness of the gear plate
05_gear_thickness = 8;

//the thickness of the gear at the rim (including the teeth)
06_rim_thickness = 9;

//radial distance from the root of the teeth to the inside of the rim
07_rim_width = 3;

//the thickness of the section around the bore
08_hub_thickness = 8;

09_hub_diameter = 5;

//size of the hole in the middle
10_bore_diameter = 5;

//the number of circular holes to cut in the gear plate
11_circles = 0;

//the space between this the back of this gears teeth and the front of its meshing gear's teeth when the gear is correctly spaced from it
12_backlash = .5;

//for making helical gears
13_twist = 0;

//the number of facets in one side of the involute tooth shape. If this is omitted it will be 1/4 of $fn. If $fn is not set, it will be 5.
14_involute_facets = 20;

//top gear settings
21_number_of_teeth = 9;

//Controls the size of the teeth (and hence the size of the gear)
22_circular_pitch =  300;

//Controls the shape of the teeth
23_pressure_angle = 21;

//The gap between the root between teeth and the teeth point on a meshing gear
24_clearance = 1;

//the thickness of the gear plate
25_gear_thickness = 20;

//the thickness of the gear at the rim (including the teeth)
26_rim_thickness = 13;

//radial distance from the root of the teeth to the inside of the rim
27_rim_width = 5;

//the thickness of the section around the bore
28_hub_thickness = 20;

29_hub_diameter = 5;

//size of the hole in the middle
20_bore_diameter = 5;

//the number of circular holes to cut in the gear plate
21_circles = 0;

//the space between this the back of this gears teeth and the front of its meshing gear's teeth when the gear is correctly spaced from it
22_backlash = .5;

//for making helical gears
23_twist = 0;

//the number of facets in one side of the involute tooth shape. If this is omitted it will be 1/4 of $fn. If $fn is not set, it will be 5.
24_involute_facets = 20;

//create gears

gear(	number_of_teeth = 01_number_of_teeth,
		circular_pitch =  02_circular_pitch,
		pressure_angle = 03_pressure_angle,
		clearance = 04_clearance,
		gear_thickness = 05_gear_thickness,
		rim_thickness = 06_rim_thickness,
		rim_width = 07_rim_width,
		hub_thickness = 08_hub_thickness,
		hub_diameter = 09_hub_diameter,
		bore_diameter = 10_bore_diameter,
		circles = 11_circles,
		backlash = 12_backlash,
		twist = 13_twist,
		involute_facets = 14_involute_facets
);
/*

translate([0,0,-.5]){
	if(00_build_plate == 0){
		%cube([285,153,1],center = true);
	}
	if(00_build_plate == 1){
		%cube([225,145,1],center = true);
	}
	if(00_build_plate == 3){
		%cube([120,120,1],center = true);
	}

}

*/

translate([0,0,08_hub_thickness-1]){

gear(	number_of_teeth = 21_number_of_teeth,
		circular_pitch =  22_circular_pitch,
		pressure_angle = 23_pressure_angle,
		clearance = 24_clearance,
		gear_thickness = 25_gear_thickness,
		rim_thickness = 26_rim_thickness,
		rim_width = 27_rim_width,
		hub_thickness = 28_hub_thickness,
		hub_diameter = 29_hub_diameter,
		bore_diameter = 20_bore_diameter,
		circles = 21_circles,
		backlash = 22_backlash,
		twist = 23_twist,
		involute_facets = 24_involute_facets
);

}

```


[User]
I'd like to design a hex key holder that's customizable for different sized keys. I have some specifications in mind, but I'm flexible on some of the details.

The core idea is a block with three holes for hex keys. I'd like to specify the diameter for each of those holes (let's call them `hex1`, `hex2`, and `hex3`). I'll be printing this, so I'd also like to be able to specify a `tolerance` value to make the fit right. The goal is for it to be parametric so I can easily change those 4 variables and generate a new model.

The block part should be a rounded-edge rectangle, but it doesn’t need to be super precise, just a smooth body with an approximate rectangular shape. I'd like the dimensions of the block to adjust to accommodate the hex keys, rather than being static. The basic shape can be made with a minkowski sum operation and I’ve experimented a bit with this before. The three hex key holes should be cut out from the block, with the `hexHole` module making the cut.

I also want to add a neck and a head, which will serve a dual purpose: the neck will be part of the mounting mechanism, and the head will be designed so that it fits in a standard 20mm aluminum extrusion profile, making it easy to slide it in without disassembling the profile. The neck will be a simple cylinder and cube combination. The head will be a bit more complex, using a cylinder, a few cubes, and some extrusions, it also should have 2 rounded edges to help with the 2020 extrusion insertion.

I’m hoping you can generate an OpenSCAD file that will handle all of this. I'm not using any specific libraries, but if you find them necessary you are free to do so. I would like to be able to define these variables `hex1`, `hex2`, `hex3`, `tolerance`, and use them throughout the design.

[Assistant]
hex_key_holder.scad:
```
// Customizable hex key holder

// diameter for key #1
hex1 = 4; // [1.5:0.5:5]

// diameter for key #2
hex2 = 2.5; //[1.5:0.5:5]

// diameter for key #3
hex3 = 1.5; //[1.5:0.5:5]

// tolerance for the print
tolerance = 0.25;

/*[Hidden]*/
$fn=32;

// Lets build it
block();

module hexHole(h){
    h = h+tolerance;
    face = (h)/sqrt(3);

    color("red")
    union(){
        cube([h/sqrt(3),h,8], center = true);
        rotate(60) cube([face,h,8], center = true);
        rotate(120) cube([face,h,8], center = true);
    }
}

function d(h=5) = 2*h/sqrt(3);

module hexHoles(){
    space = (18-d(hex1)-d(hex2)-d(hex3))/4;

    translate([-9+space+d(hex1)/2,0,0])
    hexHole(hex1);

    translate([-9+2*space+d(hex1)+d(hex2)/2,0,0])
    hexHole(hex2);

    translate([-9+3*space+d(hex1)+d(hex2)+d(hex3)/2,0,0])
    hexHole(hex3);
}

module block(){
    union(){
        // BODY
        difference(){
            minkowski(){
                sphere(1);

                translate([0,0,0])
                cube([18,8,4], center = true);
            }

            hexHoles();
        }
        // NECK
        union(){
            translate([0,-5.5,0])
            rotate([90,0,0])
            cylinder(h=3, r=3, center=true);

            translate([0,-7,0])
            cube([3, 3,3], center = false);

            translate([-3,-7,-3])
            cube([3,3,3], center = false);

        }
        // HEAD
        intersection(){
            union(){
                translate([0,-9.8,0])
                rotate([-90,0,0])
                cylinder(h=2.8, r=5, center=false);

                translate([0,-9.8,0])
                cube([5, 2.8,5], center = false);

                translate([-5,-9.8,-5])
                cube([5, 2.8,5], center = false);

                union(){
                    intersection(){
                        translate([0,-9.8,0])
                        rotate([90,0,0])
                        linear_extrude(height = 1, scale = 0.6)
                        square([10, 10], center = true);

                        union(){
                            translate([0,-10.8,0])
                            cube([5, 1,5], center=false);

                            translate([-5,-10.8,-5])
                            cube([5,1,5], center=false);
                        }
                    }
                    translate([0,-9.8,0])
                    rotate([90,0,0])
                    linear_extrude(height = 1, scale = 0.6)
                    circle(5, center = true);
                }
            }

            translate([-5,-10.8,-3])
            cube([10,3.8,6], center = false);
        }
    }
}
echo(version=version());
```


[User]
Okay, I'm looking to design an adapter for my AeroPress coffee maker so I can use it with wide-mouth Klean Kanteen thermoses or Mason jars. I already have a basic idea in mind and some dimensions I want to use, and I'd like the design to be parametric so I can adjust it later if needed.

Here's the breakdown of what I need:

**Core Functionality:**

*   The adapter needs to sit on top of the thermos or jar and act as a stable platform for the AeroPress.
*   It needs to have a funnel-like section to guide the coffee into the container.
*   It should also include a holder for a gasket to help distribute the force and protect the adapter from damage when pressing with the Aeropress.
*   I want to add pressure relief vents in the top flange section to keep pressure from building up when plunging the Aeropress.

**Specific Dimensions (these should be parameters):**

*   `topd`: Top flange diameter (where the adapter will rest on the thermos/jar) -  starting at 105mm
*   `toph`: Top flange height - 11mm
*   `topid`: Top flange inner diameter (where the AeroPress sits) - 70mm
*   `btmid`: Bottom inner diameter of the funnel (this is where it starts to funnel down) - 45mm
*   `fth`: Funnel height - 2mm
*   `gid`: Gasket inner diameter - 48mm
*   `god`: Gasket outer diameter - 69.75mm
*   `gth`: Gasket thickness - 4mm
*  `hh`: Funnel height - 4mm

**Key Features:**

*   The top flange should have a flat top and then transition into the funnel shape, which narrows down to the `btmid`.
*   The gasket holder should be a recessed area on the underside of the adapter. It needs to accommodate a gasket with the given `gid`, `god`, and `gth` dimensions.
*   I'd like at least three pressure relief vents in the top flange – small holes or channels.

**General Requirements:**

*   I want to be able to easily modify all of the dimensions as parameters at the top of the file.
*   I would like to make use of the `difference()` operator for creating the holes and the pressure relief.
*  I'd like the design to be clean and easy to 3D print and visualize using OpenSCAD.

Could you generate an OpenSCAD file or files that implement this design? I don't need to rely on any external libraries for this - I think we can do it with just core OpenSCAD functionality. I would prefer if the gasket holder and pressure relief were done using the `difference()` operation with cylinders.

[Assistant]
coffee_adapter.scad:
```
//Version 2.1
//Evelyn Boettcher
// Needed more pressure relief

topd=105; //Top Flange diameter
toph=11; //Top Flange Height
topid=70; //Top Flange inner diameter
btmid=45; //btmid
fth=2;
gid=48;
god=69.75;
gth=4;

//funnel();
pressadpter();
//gaskethlder();
//TopFlg();
module gaskethlder(){
 $fn=75;

 difference(){
   union(){
     difference(){
        cylinder(d=god+2,h=gth+1, center=true);
        translate([0,0,1]) cylinder(d=god,h=gth,center=true);
     }
   cylinder(d=gid,h=gth+1, center=true);
 }
 cylinder(d=gid-2,h=7, center=true);
 }}

module pressadpter(){
   translate([0,0,toph/2]) TopFlg();
   funnel();
   color("blue") translate([0,0,-4-(gth+1)/2+.1]) rotate([180,0,0])gaskethlder();
}
module TopFlg(){
    difference(){
    intersection(){
        cylinder(d1=topid+37,d2=topd+5,h=toph,$fn=6, center=true);
        cylinder(d1=topid+3,d2=topd+1,h=toph,$fn=75, center=true);
              }
        cylinder(d=topid, h=toph+2, $fn=80, center=true);
         translate([0,0,toph/2]) rotate([0,90,30])cylinder(d=3,h=topid+37,center=true,$fn=40); //pressure relief
         translate([0,0,toph/2]) rotate([0,90,-30])cylinder(d=3,h=topid+37,center=true,$fn=40); //pressure relief
         translate([0,0,toph/2]) rotate([0,90, 90])cylinder(d=3,h=topid+37,center=true,$fn=40);   //pressure relief
}}

module funnel(){
    hh=4;
    translate([0,0,-hh/2])
    difference(){
        cylinder(d2=topid+3, d1=god+2,h=hh, center=true, $fn=75);
          cylinder(d2=topid, d1=gid-2,h=hh, center=true, $fn=75);

    }
}

```


[User]
Hey, I'd like to get a parametric model of a catapult designed in OpenSCAD. I want to be able to tweak a bunch of dimensions and angles for physics experiments.

Here are the parameters I'd like to control:

*   **Base:** I need to control the `baseWidth`, `baseLength`, and `baseHeight` as well as the `baseThick`.
*   **Arm:**  I need `armLength`, `armWidth`, and `armThick`. Also, the `angle` of the arm (relative to the base) should be adjustable.
*   **Bucket:** The `bucketRad` and `bucketThick` should be parameters.
*   **Crossbar:**  I'd like to be able to include or exclude a crossbar.  If included, I need to set the `barHeight` and its distance from the front of the base, `barY`. If `barHeight` is set to 0 then the crossbar should not render.
*   **Support:** I also need to include or exclude front support structures to prevent flipping if the arm angle is too high, defined by `suppLength`, if set to 0 then these are not rendered.

I'm not using any libraries, but if you have any suggestions for how libraries could help, that'd be cool!

Thanks!

[Assistant]
Catapult.scad:
```
// model of a catapult with as many customizable parameters as possible to allow for various trajectory experiments in a physics demo

//************************************************************
//PARAMETERS
//************************************************************
// Base width
baseWidth = 7; //[5:30]
// Base length
baseLength = 15; //[5:30]
// Base height
baseHeight = 1; //[0.5:1]
// Base thickness
baseThick = 1; //[0.5:1]
// Arm length
armLength = 15; //[5:50]
// Arm width
armWidth = 0.5; //[0.25:3]
// Arm thickness
armThick = 0.25; //[0.25:1]
// Arm angle
angle = 45; //[5:90]
// Radius of bucket
bucketRad = 1; //[0.25:10]
// Bucket thickness
bucketThick = 0.25; //[0.25:1]
// Crossbar height (set to 0 if you don't want a crossbar)
barHeight = 5.5; //[0:40]
// Crossbar distance from front
barY = 4; //[0:20]
// Front support length (may be needed to prevent front flips)
suppLength = 0; //[0:15]

//************************************************************
//MATH
//************************************************************
holeWidth = baseWidth - (2*baseThick);
holeLength = baseLength - (2*baseThick);
holeHeight = baseHeight + 2;

armX = (baseWidth - armWidth)/2;
armY = baseThick/2;
armZ = baseHeight/2;

bucketX = baseWidth/2;
bucketY = ((baseThick/2) + ((armLength + bucketRad + bucketThick - armThick)*cos(angle)) - (armThick*sin(angle))) * 1.01;
bucketZ = ((baseHeight/2) + ((armLength + bucketRad + bucketThick - armThick)*sin(angle)) + (armThick*cos(angle))) * 1.01;

//************************************************************
//RENDERS
//************************************************************
$fn = 30;

// translate cube up to x-y plane to make printers happy
//translate([0,0,baseHeight/2]){
	catapult();
//}

//************************************************************
//MODULES
//************************************************************
module catapult(){
    union(){
        base();
        arm();
        bucket();
        if(barHeight != 0){
            crossbar();
        }
        if(suppLength != 0){
            support();
        }
    }
}

module base(){
    difference(){
        cube([baseWidth,baseLength,baseHeight],false);
        translate([baseThick,baseThick,-1]){
            cube([holeWidth,holeLength,holeHeight],false);
        }
    }
}

module arm(){
    translate([armX,armY,armZ]){
        rotate([angle,0,0]){
            cube([armWidth,armLength,armThick],false);
        }
    }
}

module bucket(){
    translate([bucketX,bucketY,bucketZ]){
        rotate([angle,0,0]){
            translate([0,0,bucketRad*0.1]){
                difference(){
                    sphere(bucketRad+bucketThick);
                    sphere(bucketRad);
                    translate([0,0,(bucketRad*1.5)-(bucketRad*0.1)]){
                        cube([(bucketRad+1)*3,(bucketRad+1)*3,bucketRad*3],true);
                    }
                }
            }
        }
    }
}

module crossbar(){
    translate([0,barY,0]){
        cube([baseThick,baseThick,barHeight]);
    }
    translate([baseWidth-baseThick,barY,0]){
        cube([baseThick,baseThick,barHeight]);
    }
    translate([0,barY,barHeight]){
        cube([baseWidth,baseThick,baseThick]);
    }
}

module support(){
    translate([0,-suppLength,0]){
        cube([baseThick,suppLength,baseHeight]);
    }
    translate([baseWidth-baseThick,-suppLength,0]){
        cube([baseThick,suppLength,baseHeight]);
    }
}
```