[User]
I'm looking to design a parametric antenna boom holder for an Eachine 250 quadcopter, similar to the one described in the provided OpenSCAD file, but I want to be able to adjust more parameters and have a cleaner, more modular design. Specifically, I want the design to be broken down into more reusable modules.

Here's what I need:

1.  **Antenna Mount:** This should be a module that creates the basic antenna holder section. I want to control:
    *   `ant_angle`: The angle of the antennas relative to the horizontal plane (like the `antangle` parameter).
    *   `ant_tube_diameter`: The diameter of the holes for the antenna tubes.
    *  `ant_tube_length`: The length of the antenna tubes.
    *  `block_height`: The height of the main block.
    *  `block_width`: The width of the main block.
    * `ant_x_offset`: The horizontal offset of the antenna mounts from the center.
    * `ant_y_offset`: The vertical offset of the antenna mounts from the center.
    I also want control over the number of antennas (I need two, but it would be nice to have the ability to generate a single mount.)

2.  **Mounting Holes:** A separate module to generate the mounting holes for attaching it to the quadcopter frame. I need to control:
    *   `screw_distance`: The distance between the mounting holes.
    *   `screw_diameter`: The diameter of the screw holes.

3.  **Weight Reduction Slots:** I'd like a module to add optional weight reduction slots to the antenna mount. I want to control:
     *  `slot_enabled`: A boolean to enable or disable slots.
     *  `slot_width`: The width of the slot cutouts.
     * `slot_depth`: The depth of the slot cutouts.
     *  `slot_separation`: The space between the slot cutouts.

4.  **Eachine 250 Tail:** A module to generate the tail section of the Eachine 250 frame for visualization. This is the same as the `eachtail` module and should just be the same dimensions and shapes as in the provided code.

5.  **Main Assembly:** A module that puts everything together, including the antenna mounts, mounting holes, optional weight reduction slots, and the tail section, if enabled via a `show_tail` parameter.

I’d like to use the BOSL library for the parametric design, if that's possible, and I'd like the files to be organized into separate files for the modules and a top-level assembly file. So I expect something like `antenna_mount.scad`, `mounting_holes.scad`, `weight_slots.scad`, `eachine_tail.scad` and a main `eachine250_antboomholder_main.scad` file. It would also be helpful if the modules could be easily reused in other projects. I also need a clear, top-level module to generate the entire assembly.

[Assistant]
eachine250_antboomholder.scad:
```
//*********************************************
//   2.4GHz Antenna boom holder for Eachine 250 FPV racer
//             (W) Henning Stöcklein  04.10.2016
//                 Free for non commercial use
//*********************************************

// Rotation angle of antennas (30 for Eachine 250)
antangle = 30; // [20:60]

// Hole diameter of antenna tube (3.5 for bowden tube)
ant_d = 3.5 ;

// Antenna tube length (11 for Eachine 250)
ant_len = 11 ; // [6:0.5:20]

// Block height (7 for Eachine 250)
block_h = 7 ; // [5:10]

// Block width (6.5 for Eachine 250)
block_w = 6.5 ; // [5:0.1:10]

// Weight reduction slots (on/off)
oval_hole = 1 ; // [0:No, 1:Yes]

// Screw distance (30 for Eachine 250)
screw_dist = 30 ; // [20:40]

// Screw hole diameter (2.8 for M3 driller)
M3_d = 2.8 ; // [2:0.1:4]

// X position of antennas (53 for Eachine 250)
antpos_x = 53 ; // [40:60]

// y position of antennas (3 for Eachine 250)
antpos_y = 3 ; // [1:0.1:4]

// Show baseplate tail of Eachine 250?
show_tail = 0 ; // [0:No, 1:Yes]

// * End of customizable parameters
// ******************************************

module antholder()
{
    difference()
    {
       // Body frame
       union()
       {
         intersection()
         {
            translate ([0,3,0]) cube ([100, block_w, 10], center=true) ;
            hull ()
            {
                 translate ([+antpos_x,-antpos_y,0]) rotate ([0,90,-antangle])
                        cylinder (r=block_h/2, h=50, $fn=30, center=true) ;
                 translate ([-antpos_x,-antpos_y,0]) rotate ([0,90,antangle])
                        cylinder (r=block_h/2, h=50, $fn=30, center=true) ;
            } // hull
         } // intersection

        // Antenna tube cylinders
        translate ([+antpos_x,-antpos_y,0]) rotate ([0,90,-antangle])  translate ([0,0,-6])
            cylinder (r=block_h/2, ant_len, $fn=30, center=true) ;
        translate ([-antpos_x,-antpos_y,0]) rotate ([0,90,+antangle])  translate ([0,0,+6])
            cylinder (r=block_h/2, ant_len, $fn=30, center=true) ;

        } // union

       // Screw holes
       translate ([screw_dist/2, 3, 0]) cylinder (r=M3_d/2, h=20, $fn=20, center=true) ;
       translate ([-screw_dist/2, 3, 0]) cylinder (r=M3_d/2, h=20, $fn=20, center=true) ;

       // Weight reduction slots
       if (oval_hole == 1)
       {
         hull () {                // middle
            translate ([-screw_dist/2+6, 3, 3]) cylinder (r=block_w/2-1.5, h=10, $fn=20, center=true) ;
            translate ([+screw_dist/2-6, 3, 3]) cylinder (r=block_w/2-1.5, h=10, $fn=20, center=true) ;
         }
         hull () {
            translate ([screw_dist/2+6, 3, 3]) cylinder (r=block_w/2-1.5, h=10, $fn=20, center=true) ;
            translate ([screw_dist/2+18, 3, 3]) cylinder (r=block_w/2-1.5, h=10, $fn=20, center=true) ;
         }
         hull () {
            translate ([-screw_dist/2-6, 3, 3]) cylinder (r=block_w/2-1.5, h=10, $fn=20, center=true) ;
            translate ([-screw_dist/2-18, 3, 3]) cylinder (r=block_w/2-1.5, h=10, $fn=20, center=true) ;
         }
       }

       // Antenna tube holes
%    translate ([+antpos_x,-antpos_y,0]) rotate ([0,90,-antangle]) cylinder (r=ant_d/2, h=70, $fn=30, center=true) ;
%    translate ([-antpos_x,-antpos_y,0]) rotate ([0,90,antangle]) cylinder (r=ant_d/2, h=70, $fn=30, center=true) ;
    }
}

module eachtail()
{
    color ("Dimgrey") translate ([0,90, -1.7/2])
    difference()
    {
       cube ([70, 180, 1.8], center=true) ;
       translate ([70/2,-90-20,-5]) rotate([0,0,45]) cube ([20,20,10]);
       translate ([-70/2,-90-20,-5]) rotate([0,0,45]) cube ([20,20,10]);
    }

    // MPX plug
    difference () {
      color ("Green") translate ([27, 26, 11/2]) cube ([7, 16, 11], center=true) ;
      translate ([27, 26, 5+11/2]) cube ([5, 14, 10], center=true) ;
      translate ([24, 26, 5+11/2]) cube ([8, 9, 10], center=true) ;
    }

    // LED bar
    color ("Dimgrey") translate ([0, 6, 11/2]) cube ([81, 4, 13], center=true) ;
    color ("White")
       for (px = [-37.5:10:37])                   // 8 Neopixel LEDs
           translate ([px, 3.5, 4]) cube ([5,2,5])  ;

}

if (show_tail == 1) eachtail() ;

translate ([0,10,block_h/2]) antholder() ;

```


[User]
I need an OpenSCAD design for a customizable mount, specifically for a 525 MPCNC using 23.5mm OD EMT. It's a remix of a design by HicWic, so I'll need it to be parameterizable to match his design closely. I've got a list of parameters that I want to be able to adjust, which I'll outline below, along with what they do.

First off, here are the primary parameters, the ones that would be most often adjusted:

*   **Ht:** This is the overall height of the mount.
*   **EMT_Hole_Z1:** The vertical height of the lower set of EMT bolt holes.
*   **EMT_Hole_Z2:** The vertical height of the upper set of EMT bolt holes.
*   **Tool_Mnt_Z1:** The vertical height of the first set of tool mount holes.
*   **Tool_Mnt_Z2:** The vertical height of the second set of tool mount holes.

Then, there are a few more parameters that are less likely to change frequently, but that should still be adjustable:

*   **Base_Ht:** Height of the base of the mount.
*   **Tool_Mnt_Z3:** Height of a third possible set of tool mount holes (set to 0 if unused).
*   **EMT_Hole_OD:** Diameter of the bolt holes for mounting the EMT.
*   **EMT_Mnt_Hole_OD:** Diameter of the recessed bolt head area for the EMT mounting.
*   **EMT_Mnt_Recess:** Depth of the recess for the EMT mounting bolt heads.
*   **Tool_Mnt_Hole_OD:** Diameter of the bolt holes for the tool mount.
*   **Tool_Mnt_Nut_OD:** Diameter of the nut trap for the tool mount.
*   **Nut_Trap_Depth:** Depth of the nut trap for the tool mount.

Finally, there are two hidden parameters that you should bake in:

*   **Tool_Mnt_Y_Offset = 6.81**: Offset for the origin of the tool mount holes.
*   **EMT_Hole_Y_Offset = 32.85**: Offset for the origin of the EMT mount holes.

The mount itself should be created by extruding a 2D profile, and then cutting away areas. I'm including the code I based this request on, so you can grab those profiles if needed. The EMT bolt holes are created by combining a larger diameter cylinder for the bolt head recess and a smaller diameter cylinder that goes all the way through. The tool mount holes are created with a nut trap that’s a larger diameter for a short depth and a through hole that's a smaller diameter for the rest. There should be 2 sets of EMT holes and up to 3 sets of tool mount holes, depending on what values I set for those parameters.

For reference, the original design was for a 525 MPCNC using 23.5mm OD EMT, so the default values will need to reflect that. I will need all parameters to be customizable. Also, the bolt holes need to be angled so that they do not require supports when printing.

Please provide the complete OpenSCAD file(s) and ensure it's well-structured and uses descriptive variable names.

[Assistant]
Customizable_HIC_525_C_23_5_V2_1.scad:
```
//Customizable 525 MPCNC "C-23.5mm OD" Remix of HicWic Universal Mount
//10/1/2016     By: David Bunch
//Source of Remix: http://www.thingiverse.com/thing:1234989
//
//This is the US version for 23.5 OD EMT
//
//Original EMT Mount Hole Recess measures 2.57mm
//Original Nut Trap Recess is 2.5mm

// CODE FOR THINGIVERSE CUSTOMIZER

////////////////////////////////////////////////////////////////////////////

/* [Main Options] */

//1. Height of Tool Holder or EMT Mount (100)
Ht = 100;                       //[40:1:100]

//2. Height of Bottom EMT Bolt Holes (10.0)
EMT_Hole_Z1 = 10.0;      //[6:0.2:20]

//3. Height of Top EMT Bolt Holes (86.2)
EMT_Hole_Z2 = 86.2;      //[40:0.2:90]

//4. 1st or only Z Height of Tool Mount Holes (25.3)
Tool_Mnt_Z1 = 25.3;      //[10:0.1:40]

//5. 2nd Z Height of Tool Mount Holes (75.3)
Tool_Mnt_Z2 = 75.3;      //[40:0.1:100]

////////////////////////////////////////////////////////////////////////////

/* [Additional Options] */

//6. Base Height (4)

Base_Ht = 4;                    //[1:0.1:6]

//7. 3rd Z Height of Tool Mount Holes (0 if not used)
Tool_Mnt_Z3 = 0;         //[0:2:100]

//8. EMT Mount Bolt Hole Diameter (4.4)
EMT_Hole_OD = 4.4;              //[3:0.1:6]

//9. EMT Mount Bolt Head Diameter (7.6)
EMT_Mnt_Hole_OD = 7.6;          //[6:0.1:8]

//10. EMT Mount Bolt Head Recess (2.6)
EMT_Mnt_Recess = 2.6;           //[1:0.1:6]

//11. Bolt Hole diameter to mount Tool Holder (3.0)
Tool_Mnt_Hole_OD = 3.0;         //[3:0.1:6]

//12. Diameter of inserted Nut for Tool Holder (6.6)
Tool_Mnt_Nut_OD = 6.6;         //[4:0.1:10]

//13. Nut Trap Depth (2.5)
Nut_Trap_Depth = 2.5;           //[1:0.1:2.5]

//14. Section Cut for Verification (yes, or no)
Draw_Section = "no";    //[yes,no]

/* [Hidden] */

Tool_Mnt_Y_Offset = 6.81;       //Offset for origin of Tool Mount holes
EMT_Hole_Y_Offset = 32.85;      //Offset for origin of EMT Mounts holes

//From where I am starting the EMT Bolt Head cut, 36.13mm will give 0.0 Recess
EMT_Mnt_Hole_Len = 36.13 - EMT_Mnt_Recess;  //Calculate length of Bolt Head Drill Length

//From where I am starting the Nut Trap cut, 14.62mm will give 0.0 deptth Cut
NutTrap_Len = 14.62 + Nut_Trap_Depth;

EMT_Hole_Res = (round(((EMT_Hole_OD * 3.14)/4) / .5)*4);
EMT_Mnt_Hole_Res = (round(((EMT_Mnt_Hole_OD * 3.14)/4) / .7)*4);
Tool_Mnt_Hole_Res = (round(((Tool_Mnt_Hole_OD * 3.14)/4) / .4)*4);

echo(EMT_Hole_Res = EMT_Hole_Res);
echo(EMT_Mnt_Hole_Res = EMT_Mnt_Hole_Res);
echo(Tool_Mnt_Hole_Res = Tool_Mnt_Hole_Res);
echo(EMT_Mnt_Hole_Len = EMT_Mnt_Hole_Len);
echo(NutTrap_Len = NutTrap_Len);

//Used to verify that this customized version matches original
//module HicWicMount_C_V2()
//{
//    difference()
//    {
//        color("red")
//        rotate([0,0,45])
//        translate([-92.06,-92.06,0])
//        import("UniversalMount_525_-_C_-_23.5_v2.stl", convexity=3);
//        if (Draw_Section == "yes")
//        {
//            translate([-100,0,EMT_Hole_Z1])
//            cube([100,100,100]);
//            translate([0,0,Tool_Mnt_Z1])
//            cube([100,100,100]);
//        }
//    }
//}
//%HicWicMount_C_V2();
module OutLine()
{
//This is the profile copied from Original Design
    linear_extrude(height = Ht, center = false, convexity = 10)polygon(points =
    [[-14.95,27.81],[-30.79,11.04],[-29.77,10.61],[-28.79,10.09],[-27.87,9.48],
    [-27,8.78],[-26.21,8],[-25.49,7.16],[-24.86,6.25],[-24.32,5.28],
    [-23.87,4.27],[-23.51,3.22],[-7.84,19.81],[7.84,19.81],[23.51,3.22],
    [23.87,4.27],[24.32,5.28],[24.86,6.25],[25.49,7.16],[26.21,8],
    [27,8.78],[27.87,9.48],[28.79,10.09],[29.77,10.61],[30.79,11.04],
    [14.95,27.81],[7.5,27.81],[-7.5,27.81]]);
}
module VertCut()
{
//This is the Cutout profile copied from Original Design
    translate([0,0,Base_Ht])
    linear_extrude(height = Ht+2, center = false, convexity = 10)polygon(points =
    [[-12.5,25.31],[-20.59,16.74],[-18.11,14.03],[-10.29,22.31],[10.29,22.31],
    [18.11,14.03],[20.59,16.74],[12.5,25.31],[7.5,25.31],[7.5,28.81],
    [-7.5,28.81],[-7.5,25.31]]);
}
module EMT_Holes()
{
    for (a =[0:1])
    {
        mirror([a,0,0])
        translate([0,EMT_Hole_Y_Offset,0])
        rotate([0,0,-47.5])
        rotate([90,0,0])
        {
            cylinder(d=EMT_Mnt_Hole_OD,h=EMT_Mnt_Hole_Len,$fn=EMT_Mnt_Hole_Res);
            cylinder(d=EMT_Hole_OD,h=48.63,$fn=EMT_Hole_Res);
        }
    }
}
module Tool_Mnt_Holes()
{
    for (a =[0:1])
    {
        mirror([a,0,0])
        translate([0,Tool_Mnt_Y_Offset,0])
        rotate([0,0,46.62])     //Line up holes at correct angle
        rotate([-90,0,0])       //Rotate holes horizontal
        {
            rotate([0,0,30])    //Rotate Nut Trap hole for no overhang printing
            cylinder(d=Tool_Mnt_Nut_OD,h=NutTrap_Len,$fn=6);      //Nut Trap Hole
            cylinder(d=Tool_Mnt_Hole_OD,h=28,$fn=Tool_Mnt_Hole_Res);    //Drill hole all the way thru
        }
    }
}
module DrawFinal()
{
    difference()
    {
        OutLine();
        VertCut();
        translate([0,0,EMT_Hole_Z1])
        EMT_Holes();
        translate([0,0,EMT_Hole_Z2])
        EMT_Holes();
        translate([0,0,Tool_Mnt_Z1])
        Tool_Mnt_Holes();
        if (Tool_Mnt_Z2 > 0)
        {
            translate([0,0,Tool_Mnt_Z2])
            Tool_Mnt_Holes();
        }
        if (Tool_Mnt_Z3 > 0)
        {
            translate([0,0,Tool_Mnt_Z3])
            Tool_Mnt_Holes();
        }
        if (Draw_Section == "yes")
        {
            translate([-100,0,EMT_Hole_Z1])
            cube([100,100,100]);
            translate([0,0,Tool_Mnt_Z1])
            cube([100,100,100]);
        }
    }
}
DrawFinal();
```


[User]
Hey, I'm trying to design a jig for gluing rod ends onto carbon fiber arms, specifically for a delta printer. I've got some parameters in mind but would like a parametric OpenSCAD model so I can easily adjust it.

Here's the idea: I need a jig that holds several rod ends (let's say, starting with a default of 6) in a consistent alignment so I can attach the carbon fiber rods. The jig needs to have a base, front and back supports, and cutouts to allow the rods to pass through. The rod ends themselves are kind of hex-shaped with a flat side for a wrench, which matters for the jig's design. I'm providing the parameters I used in my current, non-parametric design, but everything should be changeable via variables.

Here are the specific parameters I have and their ranges:

1.  **RodEnd\_Wid:** Width of the rod end across the flat side of the hex. Default is 5.7, range is 4 to 10, steps of 0.1
2.  **Fr\_Wid:** Width of the front support. Default is 3.5, range is 2 to 5, steps of 0.5
3.  **Fr\_Len:** Length of the front rod end support. Default is 5.0, range is 2 to 10, steps of 0.5
4.  **Len:** Length of the space to hold rod ends. Default is 21.5, range is 10 to 30, steps of 0.1
5.  **Ht:** Height of front and back supports. Default is 7, range is 4 to 20, steps of 0.5
6.  **Base\_Ht:** Height of the base. Default is 3.0, range is 2 to 6, steps of 0.1
7.  **Back\_Wid:** Width of the back support. Default is 3.0, range is 2 to 10, steps of 0.5
8.  **Rod\_Qty:** Number of rods to be glued. Default is 6, range is 1 to 6, steps of 1
9.  **Hole\_OD:** Rod end hole size for visual display. Default is 3.7, range is 3 to 5, steps of 0.1
10. **End\_OD:** Rod end outer diameter. Default is 10.5, range is 6 to 20, steps of 0.5

I need the code to calculate derived parameters like the spacing between rod ends (which is related to Fr\_Wid and RodEnd\_Wid), and the overall width of the jig. Also, it'd be cool if the rod ends themselves were included for visual display. I don't need a super high resolution model, so `$fn=16` would be fine.

For the generated SCAD files, please use the BOSL2 library to help with the design.

Let me know if you need any clarification! Thanks!

[Assistant]
RodEndHolderJig_Rev7.scad:
```
//Gluing Jig for Folger Tech Carbon Fiber Arms
//10/1/2016     By: David Bunch
//
//This is customizable

//1. Width of Rod Ends across Flat side of Hex
RodEnd_Wid = 5.7;       //[4:0.1:10]

//2. Width of Front support
Fr_Wid = 3.5;           //[2:0.5:5]

//3. Width of Front Rod End Support
Fr_Len = 5.0;           //[2:0.5:10]

//4. Length to hold Rod Ends
Len = 21.5;             //[10:0.1:30]

//5. Height of Front & Back Support
Ht = 7;                 //[4:0.5:20]

//6. Height of Base
Base_Ht = 3.0;          //[2:0.1:6]

//7. Width of Back
Back_Wid = 3.0;         //[2:0.5:10]

//8. How Many rods are we Gluing
Rod_Qty = 6;            //[1:1:6]

//9. Rod End Hole size for Rod Ends Visual Display
Hole_OD = 3.7;          //[3:0.1:5]

//10. Rod End Diameter
End_OD = 10.5;          //[6:0.5:20]

/* [Hidden] */

Spacing = Fr_Wid + RodEnd_Wid;

End_Rad = End_OD / 2;
R_Wid2 = RodEnd_Wid / 2;
Rod_Rad = R_Wid2 / cos(30);
Rod_OD = Rod_Rad * 2;
//Wid = (Rod_Qty * RodEnd_Wid) + ((Rod_Qty + 1) * Fr_Wid);
Wid = Fr_Wid + (Rod_Qty * Spacing);
Tot_Ht = Base_Ht + Ht;

echo(Spacing = Spacing);
echo(R_Wid2 = R_Wid2);
echo(Rod_Rad = Rod_Rad);
echo(Rod_OD = Rod_OD);
echo(Wid = Wid);

$fn=16;             //Not much resolutions needed since it is just for display

module RodEnd()
{
    translate([Fr_Wid+R_Wid2,-End_Rad+Fr_Len+Len,Base_Ht+Rod_Rad])
    rotate([0,0,-90])
    rotate([90,0,0])
    {
        difference()
            {
            union()
            {
                translate([7+5.25,0,0])
                rotate([0,90,0])
                rotate([0,0,30])
                cylinder(d=Rod_OD,h=12.5,$fn=6);
                hull()
                {
                    translate([7+5.25,0,0])
                    rotate([0,90,0])
                    rotate([0,0,30])
                    cylinder(d=Rod_OD,h=.1,$fn=6);
                    translate([7,-Rod_Rad,-1.5])
                    cube([.1,Rod_OD,3]);
                }
                hull()
                {
                    translate([0,0,-1.5])
                    cylinder(d=End_OD,h=3);
                    translate([7,-Rod_Rad,-1.5])
                    cube([.1,Rod_OD,3]);
                }
            }
            cylinder(d=Hole_OD,h=10,center=true);
        }
        translate([7+5.25+12.5,0,0])
        rotate([0,90,0])
        cylinder(d=5,h=40);
    }
}
module Rods()
{
    for (a =[0:Rod_Qty-1])
    {
        translate([(a*Spacing),0,0])
        RodEnd();
    }
}
module DrawFinal()
{
    difference()
    {
        union()
        {
            cube([Wid,Fr_Len,Tot_Ht]);      //Front Cube
            //cube([58.55,15,3]);
            translate([0,Fr_Len + Len,0])
            cube([Wid,Back_Wid,Tot_Ht]);    //Back Cube
            cube([4,Fr_Len + Len,Base_Ht]);
            translate([Wid-4,0,0])
            cube([4,Fr_Len + Len,Base_Ht]);
        }
        for (a =[0:5])
        {
            translate([Fr_Wid+(a*Spacing),-1,Base_Ht])
            cube([RodEnd_Wid,Fr_Len + 2,Tot_Ht]);   //Cut out for Rod Arms to pass thru
        }
    }
}
DrawFinal();
%Rods();
```


[User]
Okay, I'd like to request a parametric OpenSCAD design for a chess set, similar in concept to the "Chess3.scad" example I'm providing. I really like how that design randomizes the style of the foot, stem, and shoulder of each piece, but keeps the overall aesthetic coherent.

Here are my requirements for the design:

1.  **Parametric Style:** The design should be highly parametric, allowing for significant variation in the look of each piece. Specifically, I'd like to control the shape and dimensions of the base (foot), stem, and shoulder of each piece, and to randomize each of them a little bit each time the code is compiled. It would be nice to be able to specify a range for the randomization, and for all the parameters to be internally consistent.
2.  **Chess Piece Variety:**  It must include all six standard chess pieces: king, queen, rook, bishop, knight, and pawn.
3.  **Piece-Specific Elements:**  Each piece must have unique features that distinguish it (e.g., the king's cross, the queen's crown, the rook's crenellations, the bishop's mitre, the knight's horse head, etc.). The provided example, "Chess3.scad" does these all well, but ideally I could control their shape and size with parameters too.
4.  **Consistent Style:** Even with randomization, the overall style of each piece should be consistent *within a given set.* For example, if the bases are flared, all of the bases should be flared, and the stems should be compatible with a flared base.
5.  **No External Dependencies:** The design should *not* rely on external libraries like MCAD, BOSL, BOSL2, dotSCAD, NopSCADlib, or BOLTS. Everything should be self-contained in the main SCAD file or files.
6.  **Coloration:** While I'd like to be able to specify color, the randomization should be purely geometric, and should not affect color. It should be possible to color the whole set using a single command (such as the `color()` function in the original file).
7. **Randomization:** The randomization should be accomplished using the `rands()` function, as used in the example. A small set of random numbers should be generated at the beginning of the file, and used throughout the design to make the different pieces look coherent with one another.
8. **Code Structure:** The design should be modular, with separate modules for each chess piece and their sub-components (base, stem, shoulder, unique features), as in the provided example.

I don't need the code to generate the entire board, just the pieces.

Essentially, I'd like to replicate and extend the randomization concept of "Chess3.scad," providing greater control over the look of each piece through parameters.

[Assistant]
Chess3.scad:
```
/*[Hidden]*/
style= rands(0.01,0.99,100);
$fn=45;
color("Gray"){translate([-25,-25,0])king();
translate([-25,0,0])queen();
translate([0,-25,0])knight();
translate([25,-25,0])rook();
translate([50,-25,0])bishop();
translate([0,0,0])knight();
translate([25,0,0])rook();
translate([50,0,0])bishop();}
color("Gray"){
translate([-25,25,0])pawn();
translate([0,25,0])pawn();
translate([25,25,0])pawn();
translate([50,25,0])pawn();
translate([-25,50,0])pawn();
translate([0,50,0])pawn();
translate([25,50,0])pawn();
translate([50,50,0])pawn();}
module king(){
difference(){
rotate_extrude(){intersection(){
square([13,10+10+40+20]);
offset(r=1)offset(r=-1.5)offset(r=0.5)  {union() {
base(10,12);
translate([0,12])stem(40,10);
translate([0,12+35])shoulder(6.18,6.18);
translate([0,12+35+6.18]){
scale(1.6)intersection(){
translate([-10,0,0])square(20);
offset(r=0.5)offset(r=-1)offset(r=0.5)
union(){
translate([0,11,0])scale([1,0.4])circle(2.8);

difference(){
circle(10);
translate([33.5,-4,0])circle(30,$fn=120);
;}}}
}

basecore(12+40+10,50);
}}}}translate([0,0,12+35+6.18+15]){
cube([20,2,2],center=true);
cube([2,20,2],center=true);
}}}
module queen(){
difference(){

rotate_extrude(){intersection(){
square([13,10+10+30+20+10]);
offset(r=1)offset(r=-1.5)offset(r=0.5)  {union() {

base(10,12);
translate([0,12])stem(35,10);
translate([0,12+30])shoulder(6.18,6.18);
translate([0,12+30+6.18,6.18]){
scale([1.6,1.4,1])intersection(){
translate([-10,0,0])square(25);
offset(r=0.5)offset(r=-1)offset(r=0.5)
union(){
translate([0,9.7,0])circle(2.2);
difference(){
circle(10);
translate([0,15,0])circle(8);
translate([33.5,-4,0])circle(30,$fn=120);
;}}}}
basecore(12+30,50);

}}}}
translate([0,0,12+30+6.18]){
for (a=[0:45:330]){
rotate([0,0,a ]){
rotate([0,0,22.5])translate([8.3,0,12])rotate([0,90+35,0])scale([1,1,1.2])sphere(1.8);}}}}
}

module rook(){
difference(){

rotate_extrude(){intersection(){
square([13,10+10+20+10]);union() {offset(r=1)offset(r=-2)offset(r=1)union() {
base(10,12);
translate([0,10])stem(20,10);
translate([0,10+20])shoulder(6.18,6.18*1.2);
translate([0,10+20+8])square([6.18*2.5,6.18*1.5],center=true);

}offset(r=0.4)offset(r=-0.6)offset(r=0.2)difference(){
translate([0,10+20+10])square([6.18*2.7,6.18*1.5],center=true);
translate([0,10+20+10+7.5])square([6.18*1.6,6.18*1.5],center=true);
}}}}
translate([0,0,10+20+14.5]){
for (a=[0:90:330]){
rotate([0,0,a ]){
 translate([5,0,0]) scale([1,1,1.2])cube([11,2,2],center=true);}}}}}

module knight(){
    rotate_extrude(){ square(1);}
  scale(0.95)rotate([0, 0, 45])Knightshead();
rotate_extrude(){intersection(){
square([13,10+10+20+10]);union() {offset(r=1)offset(r=-2)offset(r=1)union() {
base(10,12);}}}}}

module bishop(){
difference(){
rotate_extrude(){intersection(){
square([13,10+10+20+10+10]);offset(r=1)offset(r=-2)offset(r=1)union() {
base(10,12);
translate([0,10])stem(20,10);
translate([0,10+20])shoulder(6.18,6.18*1.2);
translate([-6,10+20+10+2])circle(6.18*2.1);
translate([0,10+20+10+2+6.18*2])circle(1.8);

}}} translate([0,-2,43])rotate([20,0,0])translate([0,0,10])cube([30,1,20],center=true);}}
module pawn(){

rotate_extrude(){intersection(){
square([13,10+10+10+10]);offset(r=1)offset(r=-2)offset(r=1)union() {
base(10,12);
translate([0,10])stem(10,10);
translate([0,10+10])shoulder(6.18,6.18);
translate([0,10+10+10])circle(6.18*1.2);
}}}}
module base(h=1,w=1)
{

r1=w*0.1;
r2=w*0.25*style[4];
r3=w*0.2*style[5];
r4=w*1*lerp(0.3,1,style[6]);
difference(){
union(){

basecore(h+r3,w);

hull(){
translate([w-r1,r1])circle(r=r1);
basecore(h/2,w);}
hull(){
translate([lerp(w-r2, w/2+r2,style[0]),lerp(h-r2,r2,style[1])])circle(r=r2);
basecore(h,w);}
hull(){
translate([w*0.618-r3,h ])circle(r=r3);
translate([0,r3])basecore(h+r3,w);}

}
translate([lerp(w*0.65+r4,w*0.45+r4,style[7]),lerp(h,r4+r1*0.5,style[8])])circle(r=r4);

}

}
module basecore(h,w){
square([w*0.1,h]);
}
module stem(h=1,w=1)
{

r1=w*0.1*style[5];
r2=w*0.35*style[10];
r3=w*0.2*style[11];
r4=w*2*style[15];

 difference(){
union()
{
stemcore(h,w);
hull(){
translate([w*0.618-r1,0])circle(r=r1);
translate([0,r1])stemcore(h/2,w);}
hull(){
translate([lerp( w*0.2,w-r2,style[12]),lerp(h-r2,r2,style[13])])circle(r=r2);
stemcore(h,w);}
hull(){
translate([w/2-r3,h-r3])circle(r=r3);
translate([0,h/2])stemcore(h/2,w);}
}
translate([lerp(w*0.75+r4,w*0.3+r4,style[16]),lerp(h-r4,r4,style[17])])circle(r=r4);
}

}

module stemcore(h,w){
square([w*0.3,h]);
}
module shoulder(h=1,w=1)
{

r1=w*0.5*style[20];
r2=w*0.5*style[21];
r3=w*0.5*style[22];
r4=w*0.75*style[25];
 union(){stemcore(h,w);
{

stemcore(h,w);

difference(){union(){hull(){
translate([w-r1,0])circle(r=r1);
stemcore(h,w);}
hull(){
translate([lerp( r2,w-r2,style[23]),lerp(h-r2,r2,style[24])])circle(r=r2);
stemcore(h,w);}

hull(){
translate([w-r3,h-r3])circle(r=r3);
stemcore(h,w);}}
translate([lerp(w+r4,w*0.5+r4,style[26]),lerp(h-r4,r4,style[27])])circle(r=r4);
}

};}

}

module kingshead (){$fn=60;

scale(2)rotate_extrude(){
intersection(){
square(10);
offset(r=0.5)offset(r=-1)offset(r=0.5)
union(){difference(){
circle(10);
translate([33.5,-4,0])circle(30,$fn=120);
;
}
}
}
}
rotate([0,0,0])w();
rotate([0,0,90])w();
rotate([0,0,180])w();
rotate([0,0,270])w();
translate([0,0,26])sphere(3);
module w(){

v=[[10,0,0,1],[10,0,5,1],[20,0,10,1],[10,0,20,1],[0,0,5,1],[0,0,10,0]];
detail = 1/20;
fn=10;
translate([0,0,15])for(i = [detail: detail: 1]) {

  hull() {
        translate([bez2(i, v)[0], bez2(i, v)[1], bez2(i, v)[2]]) rotate(bez2euler(i, v)) rotate([0, 90, 0]) {
        translate([0,-1,0])  sphere(d = bez2(i, v)[3], $fn = fn);
        translate([0,1,0])  sphere(d = bez2(i, v)[3], $fn = fn);
        };
        translate(t(bez2(i - detail, v))) rotate(bez2euler(i - detail, v)) rotate([0, 90, 0]){
translate([0,-1,0])sphere(d = bez2(i - detail, v)[3], $fn = fn);
translate([0,1,0])sphere(d = bez2(i - detail, v)[3], $fn = fn);}
sphere();      }

}}}

//v is  "list of vertices"
 module Knightshead() {
    $fn = 12;
buck();
mirror([0,1,0])buck();
    v = [
       [0, 0, 16, [11.9, 9.3,8]],
       [0, 0, 20, [10.9, 7.3, 3]],
       [-2, 0, 25, [8.9, 6.3, 3]],
       [-6, 0, 30, [6, 5.5, 3]],
       [-6.5, 0, 35, [6, 6.5, 3]],
       [-7, 0, 40, [5, 5.5, 3]],
       [-5, 0, 45, [5, 5, 2]],
       [0, 0, 44, [4, 6.5, 2]],
       [2, 0, 43, [3.5, 5.5, 1]],
       [5, 0, 40, [2.5, 3, 1]],
       [9, 0, 34, [4.5, 3.5, 2]],
       [9, 0, 32.5, [4, 3.5, 2]],
       [10.5, 0, 30.9, [2, 3.5, 1]],
       [11.3, 0, 30, [1, 2.5, 0.5]]
    ];
    v2 = [
       [-5, 0, 45, [5, 5, 2]],
       [-2, 0, 39, [6, 6.45, 7]],
       [3, 0, 38, [2, 4.5, 7]],
       [5, 0, 36, [2, 4, 7]],
       [9, 0, 32.5, [4, 3.7, 3]],
       [10.5, 0, 30.9, [2, 3.5, 1]]
    ];
    v3 = [
       [-5, 0, 45, [5, 5, 2]],
       [-3, 0, 42, [7, 6.0, 2]],
       [-3, 0, 39, [7, 6.8, 3]],
       [-2.8, 0, 35, [5, 6.5, 3]],
       [-2, 0, 34.9, [5, 5.8, 3]],
       [3, 0, 34, [2, 3.0, 3]],
       [5.9, 0, 31, [2, 3.1, 2]],
       [7.9, 0, 29, [3, 3.4, 1]],
       [9, 0, 28.1, [2, 2, 1]]
    ];
    face = [
       [-8.8, -6, 48.9, [0.7, 0.3, 0.5]],
       [-7.2, -4.9, 47, [1.9, 1.4, 0.5]],
       [-6.6, -4.0, 45.7, [2.4, 1.9, 1.6]],
       [-5.7, -2.8, 44, [3.7, 2.7, 1]],
       [1, -1, 42, [1, 1, 1]],
       [1, -4.7, 42, [1.6, 1, 1.4]],
       [1, -1, 42, [1, 1, 1]],
       [09.2, -1.4, 33.2, [1, 1, 1]],
       [09.2, -2.4, 33.2, [1, 1.5, 1.7]],
       [09, -2.9, 34.3, [1.5, 1.2, 1.7]],
       [10.7, -2.8, 35.1, [1, 1, 0.8]],
       [11, -2.2, 34.5, [1.8, 1, 0.7]],
       [11.23, -1, 33.9, [2, 1, 0.5]]
    ];
neck = [[-10, -0,0,[20,15,15]],[10, -15,0,[1,8,19]],[22, 22,0,[1,1,6]],[40, 8,0,[12,12,1]],[32, 0,0,[8,12,10]],[21, -6,0,[9,-3,1 ]],[21, -13,0,[3,6,6]] ,[19, -13,0,[3,3,5]] ];
cylinder(15,6,6,$fn=40);
difference(){
union(){
    ShowControl2(v);
    ShowControl2(v2);
    ShowControl2(v3);
    ShowControl2(face);

  mirror([0, 1, 0]) ShowControl2(face);

    translate([-1, 0, 13]) rotate([0, -90, 90]) {
       extrudeT(neck, 30, 0.15, 0.60, 0, 0.5) { //mane
          scale([1, 1.5, 1]) hull() {
             translate([0, 0.1, 0.1]) rotate([0, 90, 0]) sphere(0.1);
             translate([0, -1, 0.1]) rotate([0, 90, 0]) sphere(0.1);
             translate([0, -1, -0.1]) rotate([0, 90, 0]) sphere(0.1);
             translate([0, 0.1, -0.1]) rotate([0, 90, 0]) sphere(0.1);
          }
       }
       extrudeT(neck, 30, 0.15, 0.60, 0, 1) { //mane
          scale([0.8, 1.4, 0.8]) hull() {
             translate([0, 0.1, 0.1]) rotate([0, 90, 0]) sphere(0.1);
             translate([0, -1, 0.1]) rotate([0, 90, 0]) sphere(0.1);
             translate([0, -1, -0.1]) rotate([0, 90, 0]) sphere(0.1);
             translate([0, 0.1, -0.1]) rotate([0, 90, 0]) sphere(0.1);
          }
       }}
    }
hull(){
translate([8,0,30.7])rotate([90,0,0])cylinder(40,0.5,0.5,center=true);
translate([12,0,29.6])rotate([90,0,0])cylinder(40,0.9,0.9,center=true);
}
}
}
module buck(){ translate([-5,-4.7,38])rotate([0,0,-10])rotate([90,0,0])scale([0.5,0.5,0.45])rotate_extrude($fn=40)
{
intersection(){square(10);offset(r=1)offset(r=-2)offset(r=2,$fn=5){
 square([10,5]);
 translate([style[31]*10,5,0])rotate(90*style[28])square([1,1]);
 translate([style[33]*10,5,0])rotate(90*style[29]) square([1,1]);
 translate([style[34]*10,5,0])rotate(90*style[29]) square([2,2]);
}}
}}
module ShowControl2(v) { // translate(t(v[0])) sphere(v[0][3]);
   if (len(v[0][0]) != undef) {
      ShowSplControl(v);
   } else
      for (i = [1: len(v) - 1]) {
         // vg  translate(t(v[i])) sphere(v[i][3]);
         blendline(
            (t(v[i])), (t(v[i - 1])), (v[i][3]), (v[i - 1][3]));
      }
}

 module blendline(v1, v2, s1 = 1, s2 = 1) {
    d = 1 / 1;
    for (i = [0 + d: d: 1]) {
       hull() {
          translate(lerp(v1, v2, i)) scale(lerp(s1, s2, lerp(i, SC3(i), 0.5))) rotate([0, 0, 360 / 24]) ssphere(1);
          translate(lerp(v1, v2, i - d)) scale(lerp(s1, s2, lerp(i - d, SC3(i - d), 0.5))) rotate([0, 0, 360 / 24]) ssphere(1);
       }
    }
 }
 module ssphere() {
    hull() {
  sphere([0.25, 0.25, 1], $fn = 32);
       for (r = [0: 360 / 12: 360]) {
          rotate([0, 0, r]) translate([0.7, 0, 0.15]) sphere(0.4, $fn = 32);
          rotate([0, 0, r]) translate([0.7, 0, -0.15]) sphere(0.4, $fn = 32);
       }
    }
 }
module extrudeT(v,d=8,start=0,stop=1,twist=0,gap=1) {
         detail=1/d;

    for(i = [start+detail: detail: stop]) {
if($children>0){
       for (j=[0:$children-1])
      hull() {
        translate(t(bez2(i,v))) rotate(bez2euler(i, v))scale(bez2(i  , v)[3]) rotate([twist*i,0,0]) children(j);
        translate(t(bez2(i - detail*gap, v))) rotate(bez2euler(i - detail*gap, v))scale(bez2(i- detail*gap  , v)[3]) rotate([twist*(i- detail),0,0]) children(j);
      }
    }else{
      hull() {
        translate(t(bez2(i,v))) rotate(bez2euler(i, v))scale(bez2(i  , v)[3]) rotate([twist*i,0,0])rotate([0,-90,0])sphere(1);
        translate(t(bez2(i - detail*gap, v))) rotate(bez2euler(i - detail*gap, v))scale(bez2(i- detail*gap  , v)[3]) rotate([twist*(i- detail),0,0])rotate([0,-90,0])sphere(1);
      }}
}

  }

function lerp(start, end, bias) = (end * bias + start * (1 - bias));

module ShowControl(v)
  {  // translate(t(v[0])) sphere(v[0][3]);
      for(i=[1:len(v)-1]){
       // vg  translate(t(v[i])) sphere(v[i][3]);
          hull(){
              translate(t(v[i])) sphere(1);
              translate(t(v[i-1])) sphere(1);
              }          }
      }
  //The recusive
function bez2(t, v) = (len(v) > 2) ? bez2(t, [
for(i = [0: len(v) - 2]) v[i] * (1 - t) + v[i + 1] * ( t)]): v[0] * (1 - t) + v[1] * ( t);

//
function lim31(l, v) = v / len3(v) * l;

function len3(v) = sqrt(pow(v[0], 2) + pow(v[1], 2) + pow(v[2], 2));
// unit normal to euler angles
function bez2euler(i, v) = [0, -asin(bez2v(i, v)[2]), atan2(bez2xy(bez2v(i, v))[1], bez2xy(bez2v(i, v))[0])];

function bez2xy(v) = lim31(1, [v[0], v[1], 0]); // down xy projection
function bez2v(i, v) = lim31(1, bez2(i - 0.0001, v) - bez2(i, v)); // unit vector at i
function t(v) = [v[0], v[1], v[2]];
function SC3 (a)= let( b=clamp(a))(b * b * (3 - 2 * b));
function clamp (a,b=0,c=10)=min(max(a,b),c);
function gauss(i,n=0)=n>0?let(x=gauss(i,n-1))x+(x-SC3(x)):let(x=i)x+(x-SC3(x));

```


[User]
I'd like to design a spiral pendant for jewelry, something like an earring or necklace charm. The main body will be a spiral shape, and I'd like it to be customizable with text.

Here are the specifics:

**Spiral:**

*   **Number of Rotations:** The spiral should be able to complete a variable number of rotations, so I can choose how tightly wound it is. I imagine something around 1-2 full turns would be good, but I want to be able to tweak this.
*   **Stretch:** The spiral needs to extend along the Z-axis. I'd like to be able to control both the total length of that stretch, as well as a way to scale how quickly it stretches along the Z-axis for each rotation.
*   **Amplitude/Radius:** There should be a setting to control the overall radius of the spiral at its widest point.
*   **Thickness:** The thickness of the spiral should be adjustable. It should be a constant thickness throughout, but I want control over that thickness.
*   **Drop Length:** I'd like a straight cylinder section after the end of the spiral so that it can hang down a bit more.
*   **Smoothness:** I need to control how smooth the spiral is, so I can generate both lower-polygon and smoother models.

The spiral should start very tightly wound and small, increase in radius and stretch in Z up to the set Amplitude and Z stretch amounts, and then wind down in radius and thickness to a thin cylinder at the end. There should be two spirals that go in opposite directions but are otherwise identical.

**Text:**

*   **Text Input:**  I need to be able to specify the text that appears on the pendant.
*   **Text Starting Height:**  I need to control where the text is positioned along the Z-axis relative to the start of the spiral.
*   **Text Spacing:** I need to be able to adjust the space between the characters of the text.
*   **Font:** The font should be settable.
*   **Font Height:**  The height of the text should also be adjustable.

**Clip/Bail:**

*   I'll need a small, simple clip or bail at the top of the pendant to attach it to a chain or earring finding. A simple cylinder with a rounded top will work, maybe in the shape of a teardrop. The size of this should be tied to the spiral thickness, so I don't need a separate parameter for this.

For the OpenSCAD file or files, please make all of these parameters easily adjustable. I don't need to use any external libraries like MCAD, BOSL, or anything like that.

[Assistant]
Spiral.scad:
```
// SPIRAL SETTINGS
// Number of complete rotations of the spiral
NSpiral=1.2;
// Stretch factor for Spiral
Stretch_Factor=1;
Stretch=Stretch_Factor*.065;
// Radius of Spiral at widest point
Amplitude=5;
// Spiral Cost Thickness
SpiralThick=3;
// Length of Pendent
DropLength=37;
// Smoothness of spiral
$fn=8;
// TEXT SETTINGS
// Text for Pendent
Name="LOVE";
// Text Starting Height
TStart=3;
// Text Spacing
TSpace=6;
// Font
TFont="Arial Black";
// Font Height
FHeight=6;
Pi=3.14159265358979323846264338327950288419716939937510582*1;
//Size=2*Pi*NSpiral;
Size=360*NSpiral;
FirstQ=90*1;
LastQ=NSpiral*360-FirstQ;
Steps=Size/100;

module Spiral(Start,Stop){
    a=Amplitude;
    for (t=[Start:Steps:Stop]){
        x=a*sin(t);
        y=a*cos(t);
        z=t*Stretch;
        Thick=SpiralThick;
        translate([x,y,z])sphere(d=Thick);
    }
}

module SpiralStart(Start,Stop){
    for (t=[Start:Steps:Stop]){
        a=Amplitude-(pow(t-Stop,2)/pow(Stop,2))*Amplitude;
        x=a*sin(t);
        y=a*cos(t);
        z=(t*Stretch)*(t/Stop);
        Thick=SpiralThick;
        translate([x,y,z])sphere(d=Thick);
    }
}

module SpiralEnd(Start,Stop){
    for (t=[Start:Steps:Stop]){
        a=Amplitude-(pow(t-Start,2)/pow(FirstQ,2))*Amplitude;
        x=a*sin(t);
        y=a*cos(t);
        z=(t*Stretch)+Amplitude*((t-Start)/Steps)/((Stop-Start)/Steps);
        Thick=SpiralThick*(1-(((t-Start)/Steps)/((Stop-Start)/Steps)/1.5));
        //echo((t-Start)/Steps);
        //echo((Stop-Start)/Steps);
        //echo(((t-Start)/Steps)/((Stop-Start)/Steps));
        translate([x,y,z])sphere(d=Thick);
    }
}

module FullSpiral(){
    SpiralStart(0,FirstQ);
    Spiral(FirstQ,LastQ);
    SpiralEnd(LastQ,Size);

    rotate([0,0,180])SpiralStart(0,FirstQ);
    rotate([0,0,180])Spiral(FirstQ,LastQ);
    rotate([0,0,180])SpiralEnd(LastQ,Size);

    cylinder(d=SpiralThick/2,h=DropLength,$fn=40);
    translate([0,0,DropLength])sphere(d=SpiralThick);
}

module ShowName(){
    for (i=[1:len(Name)]){
        translate([0,-i*TSpace,-FHeight*.4])linear_extrude(height=FHeight*.8)text(Name[i-1],font=TFont,size=FHeight,halign="center");
    }
}

module Clip(){
    cylinder(d=SpiralThick/2,h=SpiralThick,$fn=40);
    translate([0,0,SpiralThick*1.75])rotate([90,0,0])rotate_extrude(angle=360,convexity=2,$fn=30)translate([SpiralThick*.75,0,0])circle(d=SpiralThick/2,$fn=20);
}

rotate([0,180,0])translate([0,0,TStart])rotate([-90,0,0])ShowName();
rotate([0,180,0])FullSpiral();
Clip();
```


[User]
I'm looking for an OpenSCAD design for a clip that attaches a lid to a plastic storage box, similar to the clips used on IKEA Samla boxes. I want the design to be parametric so I can easily adjust the dimensions for different box sizes and lid thicknesses.

Specifically, the clip should have the following general structure: a main body section that wraps around the edge of the box, a hooked section that grabs the lid, and a small connecting section between them. The main body should be somewhat 'U' shaped, with a small section jutting out to provide a little more friction.

I'd like to control the following parameters:

*   **Clip\_thickness:** The overall thickness of the clip.
*   **Clip\_width:** The width of the clip along the box edge.
*   **Section\_A:** Length of the first section on the side of the box, before any bend.
*   **Section\_B:** Length of the section that bends downwards to connect to the hooked section.
*   **Section\_BR:** The radius of the fillet where section A transitions to section B.
*  **Section\_C:** Length of the main horizontal portion of the clip where the hook attaches.
*   **Section\_CR:** The radius of the fillet where section B transitions into section C.
*   **Section\_D:** Length of the section which bends back up to grasp the lid.
*   **Section\_E:** The length of the horizontal bit that extends from Section C that connects to the final lip.
*   **Section\_F:** The length of the final lip that will wrap around the lid.
*   **Clip\_number:** The number of clips to generate in the design, with each clip rotated relative to the first, suitable for printing all together. I would like to be able to specify more than one clip at a time and have them be generated with 90 degree increments.

I don't need any special libraries for this, just standard OpenSCAD primitives. I also need the design to be set up to generate multiple clips easily. Can you provide an .scad file that implements this?

[Assistant]
lid_clip_storage_box.scad:
```
//Clip for plastic storage box
//by Khairulmizam Samsudin, Sept 2016
//xource@gmail.com
//"clip_lid_storage_box" is licenced under Creative Commons :
//Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
//http://creativecommons.org/licenses/by-nc-sa/4.0/

//UPDATES:
//7/10/2016 - Released

/* [Options] */
// preview[view:south east, tilt:top diagonal]
// Clip thickness.
Clip_thickness=4; // [1:10]
// Width of the clip.
Clip_width=10; // [5:50]
// Section A length.
Section_A=6; // [3:10]
// Section B length.
Section_B=6; // [2:10]
// Section B fillet radius.
Section_BR=2; // [0:5]
// Section C length.
Section_C=19; // [10:30]
// Section C fillet radius.
Section_CR=8; // [0:20]
// Section D length.
Section_D=17; // [5:20]
// Section E length.
Section_E=5; // [5:20]
// Section F length.
Section_F=5; // [5:20]
// Number of clip to generate
Clip_number=1; // [1:4]

/* [Hidden] */
N=Clip_number;
W=Clip_width;
T=Clip_thickness;
aL=Section_A;
aW=W;
aT=T;
R1=Section_BR;
bL=T;
bW=W;
bT=Section_B;
cL=Section_C;
cW=W;
cT=T;
R2=Section_CR;
dL=T;
dW=W;
dT=Section_D;
eL=Section_E;
eW=W;
eT=T;
fL=T;
fW=W;
fT=Section_F;

$fn=40;
epsilon=0.1;
module ocylinder(r1,r2,h) {
    difference() {
        cylinder(r=r1,h=h,center=true);
        cylinder(r=r2,h=h+epsilon,center=true);
    }
}

module a() {
    hull() {
        translate([-cL/2-aL-T,0,0]) rotate([90,0,0]) cylinder(r=T/2,h=W,center=true);
        translate([-0.5-cL/2-T,0,0]) cube([1,cW,cT],center=true);
    }
}

module fillet(R) {
    difference() {
        rotate([90,0,0]) ocylinder(r1=R+T,r2=R,h=W);
        coL=R+T;
        coW=W;
        coT=coL*2;
        //translate([coL/2+epsilon,0,0]) cube([coL+epsilon,coW+epsilon,coT],center=true);
        //translate([0,0,-coL/2-epsilon]) cube([coT+epsilon,coW+epsilon,coL+epsilon],center=true);
        translate([coT/2,0,0]) cube([coT,coW+epsilon,coT],center=true);
        translate([0,0,-coT/2]) cube([coT,coW+epsilon,coT],center=true);
    }
}

module lid_clip() {
    hull() {
        a();
        translate([-R2/2,0,0]) cube([cL-R2,cW,cT],center=true);
    }
    translate([R1-cL/2,0,-R1-T/2]) fillet(R=R1);
    translate([R1-cL/2-R1*2-T,0,-R1-T/2]) mirror([1,0,0]) fillet(R=R1);
    translate([-bL/2-cL/2,0,-bT/2-cT/2]) cube([bL,cW,bT],center=true);
    translate([-R2+cL/2,0,-R2-T/2]) mirror([1,0,0]) fillet(R=R2);
    translate([cL/2+dL/2,0,-dT/2-cT/2-R2/2]) cube([dL,dW,dT-R2],center=true);
    hull() {
        translate([cL/2,0,-dT-T/2]) rotate([0,180,0]) fillet(R=0);
        translate([-eL/2+cL/2,0,-eT-dT]) cube([eL,eW,eT],center=true);
        translate([cL/2-eL,0,-dT-T/2]) rotate([0,-90,0]) fillet(R=0);
    }
    translate([-fL/2+cL/2-eL,0,fT/2-dT-T/2]) cube([fL,fW,fT],center=true);
}

module c1() {
    rotate([-90,0,0]) translate([cL/2+bL+aL/2,0,aT/2+bT+T]) lid_clip();
}

c1();
if (N>1) { rotate([0,0,90]) c1(); }
if (N>2) { rotate([0,0,180]) c1(); }
if (N>3) { rotate([0,0,270]) c1(); }

//translate([-T,0,-cL/2-bL-aL-T*2]) rotate([0,90,0]) lid_clip();

```


[User]
Hey, I'm looking for an OpenSCAD design for a kind of stylized spiderweb. It should have several parameters I can tweak.

Specifically, I want to control the overall *size* of the web (like a diameter or radius), the *thickness* of the strands, the *number of strands* going out from the center, and the *number of wedges* that make up the web pattern – kind of like the slices of a pie. I'd like those to be integer values.

For each "slice," I want a central spoke going out to the edge and then several concentric arcs connecting adjacent spokes. I'd also like the arc offset from the radial spokes to be adjustable, almost like there's a bulge at each connection point.

Additionally, it would be useful to control how "flat" the base of the spiderweb is, so a boolean value for "flat\_bottom" would be great.

I'm thinking I'd also need a value for the resolution on any rounded surfaces so there aren't any obvious facets, a value for the spoke offset.

Basically, I want a procedural model, not just a static one. This means I need the code to use variables for all of the parameters mentioned. And I don't want to have to specify units, so I would like it if all units were in millimeters.

I'm also expecting this to be somewhat computationally intensive, given the curves. I want to avoid any unnecessary calculations.

I do not have a strong preference for which library you use but I'd like the design to be relatively easy to understand.

Thanks in advance!

[Assistant]
Web.scad:
```
//BEGIN CUSTOMIZER VARIABLES
/*[WEB]*/
//units are in mm
size = 100;
thickness = 3;
strands =5;
wedges = 7;//[4:20]
/*[Advanced Stuffs]*/
resoultion = 25;
spoke_showing = 2.5;//[2.5:100]
flat_bottom = true;
//END CUSTOMIZER VARIABLES
module spoke(){
	rotate([-90,0,0])
		cylinder(r=thickness/2, h=size/2, $fn=resoultion);
}

module arc(){
	for(i = [1:strands]){
		intersection([0,0,30]){
			translate([0,0,-thickness*.5]){
				rotate([0,0,360/wedges]){
					linear_extrude(thickness){
						polygon((size/2*i/strands*(1+spoke_showing/100))*[[0,0],[0,1],[sin(360/wedges),cos(360/wedges)]]);
					}
				}
			}
			rotate([0,0,360/wedges/2]){
				translate([0,cos(360/(2*wedges))*i*size/((1+spoke_showing/100)*strands),0]){
					rotate_extrude(convexity = 15){
						translate([i*size/(2*strands), 0, 0]){
							circle(r = thickness/2, $fn = resoultion);
						}
					}
				}
			}
		}
	}
}

intersection(){
	if(flat_bottom)
		translate([0, 0, size])
			cube(2*size, center =true);
	for(i = [1:wedges]){
		rotate([0,0,(360/wedges)*(i-1)]){
			union(){
				spoke();
				arc();
			}
		}
	}
}
```


[User]
I need a parametric funnel design, something I can customize and 3D print. I've got some basic ideas on how it should work.

First, the main body of the funnel should be made of two connected cones. The top cone starts at a `top_diameter` and goes down to a `middle_diameter`, and the lower cone connects the `middle_diameter` to a `bottom_diameter`. All three diameters should be configurable. The cones should be connected in a smooth manner, so no hard edges. There also should be an optional top rim, controlled by the `top_rim` parameter; a straight cylinder before the top cone starts.

Second, the funnel should have an optional wall thickness. The `wall` parameter should control this. I want to be able to create both a solid funnel and an outline of a funnel, so all dimensions (diameters) should be reduced by the wall thickness. The `wall` parameter can be assumed to be the thickness of the *material* of the funnel and should be subtracted from both sides of the overall diameters.

Third, I'd like an option to add ventilation holes. These should be created by adding a hull between the bottom, middle and top of the funnel.  The hull should be located just below the rim of the funnel. The ventilation holes are located at 0, 120 and 240 degrees. They should use the `wall` variable but can also have their own `ventilation_factor` variable to make them wider (or thinner).

Finally, I'd also like an option to add a handle. It should be a cylinder attached to the side, kind of like a D shape, at the `middle_diameter` point, on a radius that starts at the outside of the cylinder. The handle should also be affected by the `wall` variable, and it also should have a slight gap between the handle and the main funnel body.

Oh, and one more thing, a `wall_correction` variable to switch a wall correction on and off - if enabled the diameters should be reduced depending on the angel of the cones.

I think those should cover all the features. I'd appreciate it if you could put it all in OpenSCAD code. I don't have any specific libraries in mind, so just use standard OpenSCAD operations.

[Assistant]
trichter.scad:
```
top_diameter    = 100; // [40:1:500]
middle_diameter =  20; // [10:1:60]
bottom_diameter =  10; // [5:1:40]
//top_cone_height = top_diameter / 2;

wall = 1.5; // [0.5:0.05:4]
create_ventilation = "true"; // [true, false]
create_handle = "true"; // [true, false]

all();

module all()
{
    difference()
    {
        union()
        {
            funnel();
            if(create_ventilation == "true") ventilation();
            if(create_handle == "true") handle();
        }
        funnel(wall);

    }
}

module funnel(wall=0)
{
    cylinder(d1=top_diameter-2*wall, d2=middle_diameter-2*wall, top_diameter/2, $fn=top_diameter);
    translate([0,0,top_diameter/2-0.1])
        cylinder(d1=middle_diameter-2*wall, d2=bottom_diameter-2*wall, top_diameter/2);
}

module handle()
{
    translate([top_diameter/2,middle_diameter/2,middle_diameter/2]) rotate([90,0,0])
        difference()
        {
            cylinder(d=middle_diameter, h=middle_diameter);
            cylinder(d=middle_diameter-2*wall, h=middle_diameter);
        }
}

module ventilation()
{
    for(alpha=[0,120,240])
    {
        rotate([0,0,alpha])
        union()
        {
            hull()
            {
                // bottom of funnel
                translate([0,-wall/2,top_diameter-0.2])
                    cube([bottom_diameter/2,wall,0.1]);
                // middle of funnel
                translate([0,-wall/2,top_diameter/2])
                    cube([middle_diameter/2+2.5*wall,wall,0.1]);
            }
            hull()
            {
                // middle of funnel
                translate([0,-wall/2,top_diameter/2])
                    cube([middle_diameter/2+2.5*wall,wall,0.1]);
                // top of funnel
                translate([0,-wall/2,0])
                    cube([top_diameter/2*0.9,wall,0.1]);
            }
        }
    }
}

```
trichter.scad:
```
top_diameter    = 100; // [40:1:500]
middle_diameter =  20; // [10:1:60]
bottom_diameter =  10; // [5:1:40]
top_rim         =   0; // [0:1:50]

wall = 1.5; // [0.5:0.05:4]
create_ventilation = "true"; // [true, false]
create_handle = "true"; // [true, false]

all();

module all()
{
    difference()
    {
        union()
        {
            funnel();
            if(create_ventilation == "true") ventilation();
            if(create_handle == "true") handle();
        }
        funnel(wall);

    }
}

module funnel(wall=0)
{
    cylinder(d=top_diameter-2*wall, h=top_rim, $fn=top_diameter);
    translate([0,0,top_rim])
        cylinder(d1=top_diameter-2*wall, d2=middle_diameter-2*wall, top_diameter/2, $fn=top_diameter);
    translate([0,0,top_diameter/2+top_rim-0.1])
        cylinder(d1=middle_diameter-2*wall, d2=bottom_diameter-2*wall, top_diameter/2);
}

module handle()
{
    translate([x_handle(),middle_diameter/2,middle_diameter/2]) rotate([90,0,0])
        difference()
        {
            cylinder(d=middle_diameter, h=middle_diameter);
            cylinder(d=middle_diameter-2*wall, h=middle_diameter);
        }
}

function x_handle() = (top_rim>5) ? top_diameter/2+middle_diameter/4 : top_diameter/2;

module ventilation()
{
    for(alpha=[0,120,240])
    {
        rotate([0,0,alpha])
        union()
        {
            hull()
            {
                // bottom of funnel
                translate([0,-wall/2,top_diameter+top_rim-0.2])
                    cube([bottom_diameter/2,wall,0.1]);
                // middle of funnel
                translate([0,-wall/2,top_diameter/2+top_rim])
                    cube([middle_diameter/2+2.5*wall,wall,0.1]);
            }
            hull()
            {
                // middle of funnel
                translate([0,-wall/2,top_diameter/2+top_rim])
                    cube([middle_diameter/2+2.5*wall,wall,0.1]);
                // top of funnel
                translate([0,-wall/2,top_rim])
                    cube([top_diameter/2*0.9,wall,0.1]);
            }
        }
    }
}

```
trichter.scad:
```
top_diameter    = 100; // [40:1:500]
middle_diameter =  20; // [10:1:60]
bottom_diameter =  15; // [5:1:40]
top_rim         =  00; // [0:1:50]

wall = 2.0; // [0.5:0.05:4]
create_ventilation = "false"; // [true, false]
ventilation_factor = 1; // [1:0.5:3]
create_handle = "false";     // [true, false]
wall_correction = "false";   // [true, false]

all();

module all()
{
    difference()
    {
        union()
        {
            funnel();
            if(create_ventilation == "true") ventilation();
            if(create_handle == "true") handle();
        }
        funnel(wall);

    }
}

module funnel(wall=0)
{
    a=atan(top_diameter/(top_diameter-middle_diameter));
    x = wall_correction == "false" ? 0 : 2*sin(a)*(wall-wall*sin(a));

    // the optional straight part
    cylinder(d1=top_diameter-2*wall, d2=top_diameter-2*wall-x, h=top_rim, $fn=top_diameter);
    // the large cone of the funnel
    translate([0,0,top_rim])
        cylinder(d1=top_diameter-2*wall-x, d2=middle_diameter-2*wall-x, h=top_diameter/2, $fn=top_diameter);
    // the thin cone of the funnel
    translate([0,0,top_diameter/2+top_rim-0.001])
        cylinder(d1=middle_diameter-2*wall-x, d2=bottom_diameter-2*wall-x, h=top_diameter/2, $fn=top_diameter);
}

module handle()
{
    translate([x_handle(),middle_diameter/2,middle_diameter/2]) rotate([90,0,0])
        difference()
        {
            cylinder(d=middle_diameter, h=middle_diameter);
            translate([0,0,-0.001]) cylinder(d=middle_diameter-2*wall, h=middle_diameter+0.002);
        }
}

function x_handle() = (top_rim>5) ? top_diameter/2+middle_diameter/4 : top_diameter/2;

module ventilation()
{
    for(alpha=[0,120,240])
    {
        rotate([0,0,alpha])
        union()
        {
            hull()
            {
                // bottom of funnel
                translate([0,-wall/2,top_diameter+top_rim-0.2])
                    cube([bottom_diameter/2,wall,0.1]);
                // middle of funnel
                translate([0,-wall/2,top_diameter/2+top_rim])
                    cube([middle_diameter/2+ventilation_factor*wall,wall,0.1]);
            }
            hull()
            {
                // middle of funnel
                translate([0,-wall/2,top_diameter/2+top_rim])
                    cube([middle_diameter/2+ventilation_factor*wall,wall,0.1]);
                // top of funnel
                translate([0,-wall/2,top_rim])
                    cube([top_diameter/2*0.95,wall,0.1]);
            }
        }
    }
}

```


[User]
I'm looking to create a wall-mounted guitar hanger and would like your help designing the OpenSCAD files. I've got a basic idea and some key measurements.

The main body of the hanger should be a sort of curved shape, almost like a hook extending out from the wall. It should have a flat mounting surface that sits against the wall and then curve up and out. I'd like to use a `hull` to create this main body. The cross-section of this main body should be like a rectangle with a curved end - I would like to specify the length and depth of the rectangle and the fillet radius of the curved end.

The hanger also needs a "neck holder" - a U-shaped cutout where the guitar neck will rest. This should be a cylindrical cutout with a rectangular "scoop" removing the rest of the cylinder that doesn't form the U. The dimensions should be parametric as well - width of the neck holder (cylinder diameter) and it's depth.

Finally, I need mounting holes. I want to be able to specify the diameter of these screw holes and their positions along the mounting edge. I would like to do this by specifying a spacing and number of holes.

For the main body I'm thinking that the width of the hanger can be defined, as well as the length and depth, and a fillet radius. The neck holder should have a width and depth, and then the mounting holes can be controlled by their diameter, number and spacing.

I'd really like to make this parametric so I can easily change the dimensions for different guitars. I'm imagining I could define these dimensions at the start of the file: `width`, `depth`, `length`, `neckWidth`, `neckHolderThickness`, `filletRadius`, `screwDiameter`, `numberOfHoles`, and `holeSpacing`.

I'd prefer this to be as clean as possible, without any magic numbers, so that all variables are used in the object construction. And just in case it's relevant, I don't need to worry about any support structures as I'm aiming to print in a material with good overhang performance.

[Assistant]
guitarHanger.scad:
```
/***********************************************************************
Name ......... : guitarHanger.scad
Description....: Wall hanger for guitars
Author ....... : Garrett Melenka
Version ...... : V1.0 2016/10/07
Licence ...... : GPL
***********************************************************************/

//width of guitar hanger
width = 60;
//depth of guitar hanger
depth = 100;
//length of guitar hanger
length = 100;

//Measured width of guitar neck
neckWidth = 45;

//Thickness of neck holder
neckHolderThickness = 30;

//Fillet radius
filletRadius = 12.7;

//Diameter of holes for mounting screws
screwDiameter = 6.0;
//Number of mounting screws
numberOfHoles = 3;
//Spacing between mounting screws
holeSpacing = 25;

module GuitarHanger()
{
    difference()
    {

    hull(){
    linear_extrude(height = width, center = true){
    polygon(points = [[0,0], [depth,0], [depth,length]]);

    }

    translate([depth,length,0]){
    cylinder(h=width+1, r=filletRadius*0.5, center = true);
    }
    }

    translate([depth*0.5+10,neckHolderThickness,0]){
    rotate([0,90,0]){
    union(){
    cylinder(h=depth+10, r = neckWidth*0.5, center = true);
    translate([0,depth*0.5, 0]){
    cube(size = [neckWidth, depth, depth], center = true);
    }
    }
    }
    }

    for (i = [holeSpacing:holeSpacing:holeSpacing*numberOfHoles])

    {
    translate([i,0,0]){
    rotate([90,0,0]){
    cylinder(h = 30, r = screwDiameter*0.5, center = true);
    }

    }
    }
    }
}

rotate([90,0,0])
{
GuitarHanger();
}
```


[User]
Hey, I'm looking to design some custom organizers for the board game Galaxy Trucker, and I'd like to use OpenSCAD to make them parametric so I can adjust them to fit my specific needs. I've seen some good designs, but they don't quite match my box size and the specific number of pieces.

I need a few different types of organizers:

1.  **Chip Holders:** These will hold the game's chip pieces. I'd like the design to have two rows of chip holders, each with an octagonal shape. I need to be able to specify how many chip holders are in each row (e.g., `chipCountsA` and `chipCountsB`), and how many chips each holder should hold. Also, one of the rows will end with an additional wide chip holder. The dimensions of both the normal chip and the wide chip should also be parameters (`chipDimensions` and `wideChipDimensions`).  The height of the chip holders should be calculated based on chip thickness and the quantity of chips that the holder needs to hold. I also need to be able to control the wall thickness, and bottom thickness of this part.

2.  **Chip Holder Lid:** A lid to fit on top of the chip holders. This lid should have a lip that fits around the chip holders and I need to be able to control the thickness and lip thickness of the lid.

3.  **Chip Holder Sized Box & Lid:** I want to create a box that has the same footprint as the chip holders so it stacks well with the chip holder. It should be sized to fit on top of the chip holders, with the height a calculated value based on the box's clearance and the chip holders height. I want a matching lid for this box with the same lip and thickness parameters.

4. **Chip Holder Sized Divided Box:** Same as the chip holder sized box but divided into sections. I'd like to control how many divisions are within both rows of chip holders, using percentage values (e.g. `boxDivisionsA` and `boxDivisionsB` each with values summing to less than one).

5.  **Goods Holder:** This will be a box with four sections, intended to hold the game's goods cubes. Each section should have an octagonal shape and have the same dimensions and wall thickness. The size of this container should be parameterizable.

6. **Goods Holder (Bumpy Bottom):** Exactly the same as the Goods Holder, but with small bumps on the bottom to make it easier to pick out the cubes. I need a control on the size of these bumps.

7. **Goods Holder Lid:** A lid to fit the goods holders using the same lip, and thickness, controls.

I'd like all the designs to have the following:

*   **Parametric Design:**  Everything (dimensions, thicknesses, numbers of holders, etc.) should be adjustable via parameters.
*   **Octagonal Shape:** The base shape of each chip holder and goods holder should be a slightly modified octagon with the corner chamfers and wall thicknesses factored in, for both the internal and external part of the shapes.
*   **Stackable Design:** The chip holder sized box should be designed to stack on top of the chip holders.
*   **Clearance:** There should be an overall `maxClearance` parameter which controls the maximum total height of any stacked pieces.
*   **Wall Thickness:** Each part should have a wall thickness that can be controlled using a `wallThickness` parameter.
*   **Bottom Thickness:** Parts that have a bottom, should have a `bottomThickness` parameter.
*   **Lid Lip:** All lids should have a lip to hold it on the boxes, this should have a lipThickness parameter and a lipFudge parameter.

I'm not looking to include any external libraries for this, it should all be in one or more .scad files.

Could you create an OpenSCAD design that meets these requirements? I'm not too concerned about the quality of the code as long as it works and is parametric.

[Assistant]
galaxy-trucker-organizers.scad:
```
// Global resolution
//$fs = 0.1;  // Don't generate smaller facets than 0.1 mm
//$fa = 5;    // Don't generate larger angles than 5 degrees

/* [Hidden] */
// fudge sizes
// this make preview happier, but the exported model will have more faces
$f = 0.0; // set to zero when exporting
$g = 0.01; // safe to leave as non-zero

/* [Parameters] */
part = "chipHolder"; //[chipHolder:Chip Holder,chipHolderLid:Chip Holder Lid,chipHolderSizedDividedBox:Chip-sized Box,chipHolderSizedLid:Chip-sized Box Lid,goodsHolderBox:Goods Box,goodsHolderBumpyBox:Goods Bumpy Box,goodsHolderLid:Goods Lid]

//play (chip holder length and width will be increased by this much)
play = [2,2];

//thickness of the walls
wallThickness = 2; //[1:0.5:4]
//flat surfaces, also the thickness of the lid
bottomThickness = 1; //[0.5:0.5:3]
//lip of lid thickness
lipThickness = 3;
//lip fudge (will be double this value)
lipFudge = 0.25;

// How much height you have in your box (the chipHolderBox will be sized to fit on top of the chipHolder, and the goodsHolderBox will be half this height)
maxClearance = 40; //[20:60]

// Chip's thickness, length, width, cornerLength/Width
chipDimensions = [1.66, 43.3, 21.3, 3];
// Widechip's thickness, lenght, width, cornerLenght/Width
wideChipDimensions = [1.66, 47.3, 23.8, 4];

// First row - How many chip holders to make, and how many they should hold (best if all the same value)
chipCountsA = [14,14,14,14,14];
// Second row - How many chip holders to make, and how many they should hold (best if all the same value)
chipCountsB = [14,14,14,14];
// Second row, wide chip counter (if any of these chip counts do not match, the lid will not be useful)
wideChipCount = 14;

// First row - Chip counter box divison sizes. (one extra box is made with the remainder)
boxDivisionsA = [0.333,0.333];
// First row - Chip counter box division sizes. (one extra box is made with the remainder)
boxDivisionsB = [0.25,0.50];

// How big should one of the four holders be
goodsHolderBoxSize = 50;//[20:75]
// How much chamfer
goodsHolderCornerSize = 20;//[0:75]

// Print bumps on bottom of chipholder
goodsHolderBumpSize = 6;

/* [Hidden] */
goodsHolderBoxHeight = 40/2 - bottomThickness;

chipHolderHeight = max(
        max(chipDimensions[0]*max(max(chipCountsA), max(chipCountsB))),
        wideChipDimensions[0]*wideChipCount);
echo("chipHolder height:", chipHolderHeight);
echo("chipHolderLid (effective) height:", bottomThickness);

remainingHeight = maxClearance - chipHolderHeight - bottomThickness;
echo("remaining height:", remainingHeight);

/* I use these values for my smaller 3D printer and box size, so I can't use the divided box. */
// First row - How many chip holders to make, and how many they should hold (best if all the same value)
//chipCountsA = [22.5,22.5,22.5,22.5];
// Second row - How many chip holders to make, and how many they should hold (best if all the same value)
//chipCountsB = [22.5,22.5,22.5];
// Second row, wide chip counter (if any of these chip counts do not match, the lid will not be useful)
//wideChipCount = 22.5;

// one wide chip is added to the end of chipCountsB

module octagon(width, length, innerWidth, innerLength) {
    width = width / 2;
    length = length / 2;
    innerWidth = innerWidth / 2;
    innerLength = innerLength / 2;
    points = [
        [-width, innerLength], [-innerWidth, length], // top-left corner
        [innerWidth, length], [width, innerLength], // top-right corner
        [width, -innerLength], [innerWidth, -length], // bottom-right corner
        [-innerWidth, -length], [-width, -innerLength]]; // bottom-left corner

    translate([width, length]) polygon(points, [[0,1,2,3,4,5,6,7,8]]);
}

module surface2DToBox(height, thickness, bottomThickness, chamfer) {
    linear_extrude(bottomThickness) children(0);
    translate([0,0,bottomThickness]) linear_extrude(height) difference() {
        offset(0) children(0);
        offset(delta=-thickness, chamfer=chamfer) children(0);
    }
}

module surfaceToBox(height, thickness, bottomThickness, chamfer) {
    surface2DToBox(height, thickness, bottomThickness, chamfer) projection() children(0);
}

// print the lid part, or just the lip
module surface2DToLid(thickness, lidThickness, chamfer, printLid=true) {
    rotate([180,0,0]) translate([0,0,-lidThickness]) {
        if(printLid) {
            linear_extrude(lidThickness) offset(delta=1.5, chamfer=chamfer) children(0);
        }
        translate([0,0,-thickness]) linear_extrude(thickness) difference() {
            offset(delta=1.5, chamfer=chamfer) children(0);
            offset(delta=lipFudge) children(0);
        }
    }
}

module surfaceToLid(thickness, lidThickness, chamfer) {
    surface2DToLid(thickness, lidThickness, chamfer) projection() children(0);
}

// the inside octagon's innerWidth and innerLength is defined as:
// innerWidth - tan(theta/2) * wallThickness
// *and*
// innerLength - tan((theta-90)/2) * wallThickness
// theta is the angle produced from the right triangle sitting outside the octagon:
// theta = atan((length - innerLength)/(width - innerWidth));
// sigma = 90 - theta;
// widthAdjust = tan(theta/2) * wallThickness;
// lengthAdjust = tan(sigma/2) * wallThickness;
function hollowOctagonSolidInnerVector(width, length, innerWidth, innerLength, wallThickness) = [
    tan(atan((length - innerLength)/(width - innerWidth))/2) * wallThickness*2,
    tan(atan((width - innerWidth)/(length - innerLength))/2) * wallThickness*2
];

module octagonBox(width, length, innerWidth, innerLength, wallThickness, height, bottomWallThickness) {
    surface2DToBox(height, wallThickness, bottomWallThickness, true)
        octagon(width, length, innerWidth, innerLength);
}

module chipHolder(chipDimensions, chipCount, wallThickness, bottomWallThickness) {
    outerWidth = chipDimensions[2] + wallThickness*2 + play[0];
    outerLength = chipDimensions[1] + wallThickness*2 + play[1];
    innerWidth = outerWidth - chipDimensions[3]*2 - sqrt(2)*wallThickness;
    innerLength = outerLength - chipDimensions[3]*2 - sqrt(2)*wallThickness;
    height = chipCount * chipDimensions[0];
    innerVector = hollowOctagonSolidInnerVector(width=outerWidth, length=outerLength,
            innerWidth=innerWidth, innerLength=innerLength,
            wallThickness=wallThickness);
    cutawayWidth = innerWidth - innerVector[0];
    cutawayLength = innerLength - innerVector[1];

    difference() {
        octagonBox(width=outerWidth, length=outerLength,
            innerWidth=innerWidth, innerLength=innerLength,
            wallThickness=wallThickness,
            height=height,
            bottomWallThickness=bottomWallThickness);
        // side wall cutout
        translate([outerWidth/2-cutawayWidth/2,outerLength-wallThickness-$g,bottomWallThickness-$f])
            cube([cutawayWidth, wallThickness+$g+$g, height + $f+$g]);
        // bottom cutout
        translate([outerWidth/2,outerLength-cutawayWidth*sqrt(2)/2*sqrt(2)/2,-$g])
            rotate(45)
            cube([cutawayWidth*sqrt(2)/2, cutawayWidth*sqrt(2)/2, bottomWallThickness + $g*2]);
    }
}

module moveChipInRow(chipDimensions, wallThickness, i) {
    translate([(chipDimensions[2]+wallThickness+play[0])*i,0,0])
        children(0);
}

module chipHolderRow(chipDimensions, chipCounts, wallThickness, bottomWallThickness) {
    for(i = [0:len(chipCounts)-1])
        moveChipInRow(chipDimensions, wallThickness, i)
            chipHolder(chipDimensions=chipDimensions, chipCount=chipCounts[i], wallThickness=wallThickness, bottomWallThickness=1);
}

module fullChipHolder() {
    mirror([0,1,0]) translate([0,-wallThickness,0]) chipHolderRow(chipDimensions=chipDimensions, chipCounts=chipCountsA, wallThickness=wallThickness, bottomWallThickness=bottomThickness);
    chipHolderRow(chipDimensions=chipDimensions, chipCounts=chipCountsB, wallThickness=wallThickness, bottomWallThickness=1);
    moveChipInRow(chipDimensions, wallThickness, len(chipCountsB)) chipHolder(chipDimensions=wideChipDimensions, chipCount=wideChipCount, wallThickness=wallThickness, bottomWallThickness=1);
}

function _plateWidth(chipDimensions, chipHolders, wallThickness, extraHolderWidth) =
    chipHolders*(chipDimensions[2]+wallThickness+play[0]);
function plateWidth(chipDimensions, chipHolders, wallThickness, extraHolderWidth) =
    extraHolderWidth ?
        _plateWidth(chipDimensions, chipHolders, wallThickness, extraHolderWidth) + extraHolderWidth + wallThickness + play[0] :
        _plateWidth(chipDimensions, chipHolders, wallThickness, extraHolderWidth);

module chipHolderPlate(chipDimensions, chipHolders, wallThickness, plateThickness, cornerOffset, extraHolderWidth, lengthOverride, extraLength=0) {
    width = plateWidth(chipDimensions, chipHolders, wallThickness, extraHolderWidth);
    length = lengthOverride ? lengthOverride + extraLength : chipDimensions[1] + extraLength;

    outerWidth = width + wallThickness;
    outerLength = length + wallThickness*2;
    innerWidth = outerWidth - cornerOffset*2 - sqrt(2)*wallThickness;
    innerLength = outerLength - cornerOffset*2 - sqrt(2)*wallThickness;

    linear_extrude(plateThickness)
        octagon(outerWidth,outerLength,innerWidth,innerLength);
}

module fullChipHolderPlate(extraLength=0) {
    translate([0,0,-1]) {
        mirror([0,1,0]) translate([0,-wallThickness,0]) chipHolderPlate(chipDimensions, len(chipCountsA), wallThickness, 1, chipDimensions[3], extraLength=extraLength);
        chipHolderPlate(chipDimensions, len(chipCountsB), wallThickness, 1, wideChipDimensions[3], wideChipDimensions[2], wideChipDimensions[1], extraLength=extraLength);
    }
}

module chipHolderLid() {
    rotate([180,0,0])
        translate([0,0,-bottomThickness]) linear_extrude(bottomThickness) offset(delta=1.5) projection() fullChipHolderPlate(1.5);
    translate([0,0,-$g]) surface2DToLid(lipThickness+$g,bottomThickness, chamfer=true, printLid=false)
        projection(cut=true) translate([0,0,-lipThickness+bottomThickness]) fullChipHolder();
}

module chipHolderSizedBox() {
    surfaceToBox(remainingHeight - bottomThickness, wallThickness, bottomThickness, true)
        fullChipHolderPlate();
}

function _sumArray(array, acc, start, end) =
    start > end ? acc : _sumArray(array, acc + array[start] , start + 1, end);
function sumArray(array,end) = _sumArray(array, 0, 0, end);

module chipHolderSizedDividedBox() {
    height = remainingHeight - bottomThickness;

    aWidth = plateWidth(chipDimensions, len(chipCountsA), wallThickness);
    aLength = chipDimensions[1] + wallThickness + $g;

    bWidth = plateWidth(chipDimensions, len(chipCountsB), wallThickness, wideChipDimensions[2]);
    bLength = wideChipDimensions[1] + wallThickness + $g;

    surfaceToBox(height, wallThickness, bottomThickness, true)
        mirror([0,1,0]) translate([0,-wallThickness,0]) chipHolderPlate(chipDimensions, len(chipCountsA), wallThickness, 1, chipDimensions[3]);
    surfaceToBox(height, wallThickness, bottomThickness, true)
        chipHolderPlate(chipDimensions, len(chipCountsB), wallThickness, 1, wideChipDimensions[3], wideChipDimensions[2], wideChipDimensions[1]);

    mirror([0,1,0]) for(i = [0:len(boxDivisionsA)-1]) {
        translate([(aWidth-wallThickness*2)*sumArray(boxDivisionsA,i)+wallThickness/2,$g,bottomThickness]) cube([wallThickness, aLength, height]);
    }

    for(i = [0:len(boxDivisionsB)-1]) {
        translate([(bWidth-wallThickness*2)*sumArray(boxDivisionsB,i)+wallThickness/2,$g,bottomThickness]) cube([wallThickness, bLength, height]);
    }
}

module chipHolderSizedLid() {
    surfaceToLid(lipThickness, bottomThickness, true)
        fullChipHolderPlate();
}

module goodsHolderSurface() {
    offset = goodsHolderBoxSize-wallThickness;
    innerSize = goodsHolderBoxSize-goodsHolderCornerSize;
    translate([0,0,0]) octagon(goodsHolderBoxSize,goodsHolderBoxSize,
        innerSize,innerSize);
    translate([offset,0,0]) octagon(goodsHolderBoxSize,goodsHolderBoxSize,
        innerSize,innerSize);
    translate([0,offset,0]) octagon(goodsHolderBoxSize,goodsHolderBoxSize,
        innerSize,innerSize);
    translate([offset,offset,0]) octagon(goodsHolderBoxSize,goodsHolderBoxSize,
        innerSize,innerSize);
}

module bumps(width, length, innerWidth, innerLength, wallThickness, bottomThickness) {
    if(goodsHolderBumpSize > 0) {
        length = length - wallThickness*2;
        width = width - wallThickness*2;
        rows = floor(length/goodsHolderBumpSize/2);
        columns = floor(width/goodsHolderBumpSize/2);
        lengthOffset = (length - rows*goodsHolderBumpSize*2)/2 + wallThickness + goodsHolderBumpSize/2;
        widthOffset = (width - columns*goodsHolderBumpSize*2)/2 + wallThickness + goodsHolderBumpSize/2;

        // TODO: this doesn't take into account chamfer
        translate([widthOffset, lengthOffset, bottomThickness])
        for(y = [0:rows-1]) {
            translate([0,y*goodsHolderBumpSize*2,0])
            for(x = [0:columns-1]) {
                translate([x*goodsHolderBumpSize*2,0]) {
                    translate([goodsHolderBumpSize/2,goodsHolderBumpSize/2,-goodsHolderBumpSize/2000])
                    difference() {
                        translate([0,0,-goodsHolderBumpSize/sqrt(2)/2])
                        rotate([45,45,45])
                            cube([goodsHolderBumpSize,goodsHolderBumpSize,goodsHolderBumpSize], center=true);
                        translate([0,0,-goodsHolderBumpSize])
                        cube([goodsHolderBumpSize*2,goodsHolderBumpSize*2,goodsHolderBumpSize*2], center=true);
                    }
                }
            }
        }
    }
}

module goodsHolderBox(bumps=false) {
//    surface2DToBox(goodsHolderBoxHeight, wallThickness, bottomThickness, true) goodsHolderSurface();
    offset = goodsHolderBoxSize-wallThickness;
    innerSize = goodsHolderBoxSize-goodsHolderCornerSize;
    translate([0,0,0]) {
        surface2DToBox(goodsHolderBoxHeight-bottomThickness, wallThickness, bottomThickness, true)
            octagon(goodsHolderBoxSize,goodsHolderBoxSize, innerSize,innerSize);
        if(bumps) bumps(goodsHolderBoxSize,goodsHolderBoxSize,innerSize,innerSize, wallThickness, bottomThickness);
    }
    translate([offset,0,0]) {
        surface2DToBox(goodsHolderBoxHeight-bottomThickness, wallThickness, bottomThickness, true)
            octagon(goodsHolderBoxSize,goodsHolderBoxSize, innerSize,innerSize);
        if(bumps) bumps(goodsHolderBoxSize,goodsHolderBoxSize,innerSize,innerSize, wallThickness, bottomThickness);
    }
    translate([0,offset,0]) {
        surface2DToBox(goodsHolderBoxHeight-bottomThickness, wallThickness, bottomThickness, true)
            octagon(goodsHolderBoxSize,goodsHolderBoxSize, innerSize,innerSize);
        if(bumps) bumps(goodsHolderBoxSize,goodsHolderBoxSize,innerSize,innerSize, wallThickness, bottomThickness);
    }
    translate([offset,offset,0]) {
        surface2DToBox(goodsHolderBoxHeight-bottomThickness, wallThickness, bottomThickness, true)
            octagon(goodsHolderBoxSize,goodsHolderBoxSize, innerSize,innerSize);
        if(bumps) bumps(goodsHolderBoxSize,goodsHolderBoxSize,innerSize,innerSize, wallThickness, bottomThickness);
    }
}

module goodsHolderLid() {
    surface2DToLid(lipThickness, bottomThickness, true) goodsHolderSurface();
}

//octagonBox(width=40,length=20, innerWidth=40-3,innerLength=20-6, wallThickness=wallThickness, height=40, bottomWallThickness=4);
//chipHolder(chipDimensions=chipDimensions, chipCount=10, wallThickness=wallThickness, bottomWallThickness=1);

if(part=="chipHolder") {
    fullChipHolder();
} else if(part=="chipHolderLid") {
    chipHolderLid();
} else if(part=="chipHolderSizedDividedBox") {
    chipHolderSizedDividedBox();
} else if(part=="chipHolderSizedLid") {
    chipHolderSizedLid();
} else if(part=="goodsHolderBox") {
    goodsHolderBox();
} else if(part=="goodsHolderBumpyBox") {
    goodsHolderBox(true);
} else if(part=="goodsHolderLid") {
    goodsHolderLid();
}
```


[User]
I need a parametric OpenSCAD design for a lid that I can use for various containers and even telescope lens caps. I'd like to be able to adjust several dimensions:

*   **Inner diameter:** This is the most crucial measurement, determining the actual fit of the lid. I'm thinking something like 128.5mm as a good starting point, but I want it to be adjustable.
*   **Inner height:** This would be the height of the inside of the lid, probably around 8.5mm.
*   **Wall thickness:**  This is the thickness of the lid's top and sides. I want a balance of strength and material use, so maybe 1.2mm thick.
*   **Top lip radius:** I want a rounded lip at the top of the lid. A radius of 1.2mm sounds good.
*   **Bottom lip radius:** I want a radius of 1.2mm on the bottom of the lid.

I want to be able to toggle certain features on or off:

*   **Top:** I need to be able to enable or disable the top of the lid.
*   **Walls:**  I also need the ability to enable or disable the walls.
*   **Bottom lip:** I might not always need a bottom lip, so I should be able to turn this off.
*   **Bottom edge:** I want an option to add a curved edge around the bottom of the lid.

I don't want to use any external libraries, so you should only use built-in OpenSCAD functions. For the curved sections, use a fragment count ($fn) of 60.

Can you generate the OpenSCAD code for this parametric lid?

[Assistant]
atoms_parametric_lid.scad:
```
// Here is a simple parametric lid generator with support
// for rounded edges and a lip at the top and bottom of the lid
// enjoy

/* [Dimensions] */

// inner diameter of lid in millimeters
lidDiameter = 128.5;

// inner height of lid in millimeters
lidHeight = 8.5;

// thickness of top and sides in millimeters
wallThickness = 1.2;

// radius of top lip in millimeters
topLip = 1.2;

// radius of bottom lip in millimeters
bottomLip = 1.2;

/* [Components] */

// Enable the top
draw_top = 1; // [0:1]

// Enable the walls
draw_walls = 1; // [0:1]

// Enable the bottom lip
draw_bottom_lip = 0; // [0:1]

// Enable the bottom edge
draw_bottom_edge = 1; // [0:1]

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

// top
if (draw_top)
difference() {
    union() {
        rotate_extrude(convexity = 5, slices = 90)
            translate([lidDiameter / 2, 0, 0])
                circle(r = topLip);
        translate([0, 0, (wallThickness / 2) - topLip])
            cylinder(h = wallThickness,
                     r1 = lidDiameter / 2,
                     r2 = lidDiameter / 2,
                     center=true);
    } // union
    translate([0, 0, lidHeight / 2])
      cylinder(h = lidHeight - wallThickness,
       r1 = lidDiameter / 2,
       r2 = lidDiameter / 2,
       center = true);
} // difference

// walls
if (draw_walls)
translate([0, 0, lidHeight / 2])
  difference() {
    cylinder(h = lidHeight,
             r1 = lidDiameter / 2 + wallThickness,
             r2 = lidDiameter / 2 + wallThickness,
             center = true);
    cylinder(h = lidHeight + 1,
             r1 = lidDiameter / 2,
             r2 = lidDiameter / 2,
             center = true);
  } // difference

// bottom lip
if (draw_bottom_lip)
translate([0,0,lidHeight])
  rotate_extrude(convexity = 5, slices = 90)
    translate([lidDiameter / 2, 0, 0])
        circle(r = bottomLip);

// curved edge around bottom
if (draw_bottom_edge)
translate([0,0,lidHeight])
  rotate_extrude(convexity = 5, slices = 90)
    translate([(lidDiameter + wallThickness) / 2, 0, 0])
        circle(r = wallThickness / 2);

```


[User]
I'm looking to create a customizable gasket mold using OpenSCAD. I've seen a few similar designs out there, but I need a bit more control over the parameters.

Here's what I have in mind:

*   **Gasket Dimensions:**
    *   I need to be able to specify the inner diameter of the gasket.
    *   I also need to set the outer diameter of the gasket.
    *   And, of course, the gasket's thickness.
*   **Mold Dimensions:**
    *   The mold needs a bottom wall, and I need to specify its thickness.
    *   It will also have lateral walls, and I need to control their width.

I'd like the final output to be a mold. Basically, it will be a cylinder with the outer and inner diameter of the gasket, and the thickness of the gasket, and then have walls on the side and bottom. I'll use it to make silicone gaskets.

I'd like to be able to use a `build_plate` function (like in the attached file) which would allow me to select from some common printer bed sizes. If using the provided `build_plate` implementation from the file would be difficult, please let me know before you start. I'm not sure if that is a standard library or not, but hopefully, it is simple enough for you to understand. The `build_plate` function should have options for "Replicator 2", "Replicator", "Thingomatic", and "Manual". When manual is selected, the width and depth of the build plate should also be configurable via parameters.

So, to summarize, I'd like a parametric OpenSCAD design with the parameters I've described.

[Assistant]
gasket_builder.scad:
```
use <utils/build_plate.scad>

//----------------------------------------------------------------------------
// Customize a gasket mold
// http://www.thingiverse.com/thing:1817145
//
// by Erwin Ried (2016-10-11)
// http://www.thingiverse.com/eried/things

//---[ USER Customizable Parameters ]-----------------------------------------

/* [ Gasket ] */

// Inner diameter (mm)
inner_diameter = 50;  //[10:1:300]

// Outer diameter (mm)
outer_diameter = 60;  //[10:1:300]

// Gasket tickness (mm)
gasket_tickness = 2; //[1:0.1:9]

/* [ Mold ] */

// Bottom tickness (mm)
bottom_wall_tickness = 0.6; //[0.1:0.1:9]

// Lateral tickness (mm)
lateral_walls_width = 2; //[1:1:9]

//---[ Build Plate ]----------------------------------------------------------

/* [Build plate] */
//: for display only, doesn't contribute to final object
build_plate_selector = 2; //[0:Replicator 2,1: Replicator,2:Thingomatic,3:Manual]
//: when Build Plate Selector is set to "manual" this controls the build plate x dimension
build_plate_manual_x = 100; //[100:400]
//: when Build Plate Selector is set to "manual" this controls the build plate y dimension
build_plate_manual_y = 100; //[100:400]
build_plate(build_plate_selector,build_plate_manual_x,build_plate_manual_y);

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

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

module draw()
{
    //translate([0,0,gasket_tickness])
    difference()
    {
        difference()
        {
            cylinder(gasket_tickness+bottom_wall_tickness,(outer_diameter+lateral_walls_width)/2,(outer_diameter+lateral_walls_width)/2, $fn=180);
            cylinder(gasket_tickness+bottom_wall_tickness+1,(inner_diameter-lateral_walls_width)/2,(inner_diameter-lateral_walls_width)/2, $fn=180);
        }

        translate([0,0,bottom_wall_tickness])
         difference()
        {
            cylinder(gasket_tickness,outer_diameter/2,outer_diameter/2, $fn=180);
            cylinder(gasket_tickness+1,inner_diameter/2,inner_diameter/2, $fn=180);
        }
    }
}

draw();
```


[User]
Hey, I'm looking to create a multi-color vase using OpenSCAD. I'm inspired by the Prusa multi-material upgrade, so I want to make something that really utilizes multiple extruders. I have a basic idea in mind, but I need help turning it into a parametric design.

The vase should have a cylindrical base and then a twisted top part that's made up of multiple segments. Each segment should be a different color, so that it produces a striped spiral effect.

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

*   **`height`**:  The total height of the vase.
*   **`radi`**: The radius of the vase.
*   **`num_of_twists`**: The number of twists in the spiral. Positive values will create a counter-clockwise twist.
*   **`times_each_color_appears`**: How many times each color appears in the spiral. For example, if you have 4 colors and `times_each_color_appears` is 2, each color will be represented by two segments in the spiral.
*   **`thickness`**: The thickness of the vase walls.
*   **`num_of_colors`**: The number of colors in the design. This would ideally match the number of extruders on my printer.
*   **`colors`**: An array of RGB color values representing each color that should be used. I'd like to be able to set these directly.
*  **`part`**: An integer value used to select one of the color segments, or display all of them together. If 8 is passed, all will be displayed, otherwise will show segment in color `colors[part]` with the base color at color index `part`.

The vase body itself will be a normal cylinder with the given radius, height, and thickness.

The twisted spiral section is what will use the multiple colors. It should be composed of multiple vase segments, which will extend all the way up to the top of the vase. Each segment will take up a section of the cylinder of `360 / (times_each_color_appears * num_of_colors)` degrees and will extrude along the height of the vase.

It should also be possible to display individual segments by setting `part` to a value corresponding to a particular color, for debugging and single extruder printing. If `part` is set to 8, it should show all segments at once.

I'd appreciate it if you could generate an OpenSCAD file (or files) that implements this design parametrically, making use of functions and modules for clarity. I don't want to assume there's pre-existing code, so you can treat it like a blank slate, but please use common modules and such if available.

[Assistant]
4colorVase.scad:
```
//BEGIN CUSTOMIZER VARIABLES
/*[Vase Settings]*/
height = 150;
radi = 50;
//I like the counter clockwise twists personally.
num_of_twists = -2;
//need to have this times num_of_colors >3
times_each_color_appears = 2;
thickness = 4;
/*[Color Settings]*/
//need to have this times times_each_color_appears >3, I realize 8 color support is overkill for now, but still fun to consider
num_of_colors = 4;//[2:8]
//pick what colors appear in the CUSTOMIZER
colors = [[0,0,1],[0,1,0],[1,0,0],[1,1,0],[0,1,1],[1,0,1],[0,0,0]];
/*[display]*/
//8 displays all, 0-8 displays lone parts
part = 8;//[0:0,1:1,2:2,3:3,8:8]
//END CUSTOMIZER VARIABLES

make_part();

module vase_segment() {
  angle = 360/(times_each_color_appears*num_of_colors);

  difference()
  {
    for(i=[1:times_each_color_appears])
    {
      rotate([0,0,360/times_each_color_appears*i])
        linear_extrude(height=height, twist = num_of_twists*360, convexity = 10)
        {
          intersection(){
            circle(radi, $fn=25);
            polygon(radi*[[0,0],[0,1],2*[sin(angle/2),cos(angle/2)],
                    [sin(angle),cos(angle)]]);
          }
        }
    }
    translate([0,0,thickness])
      cylinder(r=radi-thickness/2, height);
  }
}
module make_part() {
  echo(part);
  if(part ==8)
  {
    for(i=[0:num_of_colors-1])
    {
      color(colors[i])
        rotate([0,0,360/(num_of_colors*times_each_color_appears)*i])
          vase_segment();
    }
  }
  else
  {
    color(colors[part])
        rotate([0,0,360/num_of_colors*part])
          vase_segment();
  }
}

```


[User]
I need a design for a wall-mounted remote control holder, specifically for an air conditioner remote. I'd like it to be parametric so I can adjust the size for different remotes.

Here are the key features I'm looking for:

*   **Compartment:** It should have a main compartment to hold the remote. The width, depth, and height of this compartment should be adjustable parameters. I need parameters for `comp_w`, `comp_d`, and `comp_h`.
*   **Front Slot:** There should be a slot in the front of the compartment to make it easier to insert and remove the remote, with a parameter `slot_w` to control the width of the slot.
*   **Lower Lip:**  The slot should have a lip at the bottom, controlled by a parameter `slot_lower`.
*  **Corner Radius**: The compartment should have rounded corners, with a radius controlled by parameter `corner_r`.
*   **Wall Thickness:** The walls should have a defined thickness, set by `wall`.
*   **Chamfer:** There should be an option to add a chamfer at the top entry and bottom of the compartment, controlled by `chamfer`, set to 0 initially.
*   **Mounting:** It needs holes for mounting screws, and I need a parameter for the screw diameter `mnt_dia`.
*   **Tolerance:** I'd like to have a global tolerance parameter, `tol`, which should be used for mounting hole clearances and any other suitable location.

I'd also like it to use `hull()` for combining shapes and `difference()` for cutting out the compartment and holes, similar to the provided SCAD file. The code should be clear and well-commented. I'd prefer the code to be in a single .scad file if possible. Please use the standard OpenSCAD libraries only. Thanks!

[Assistant]
remote_holder.scad:
```
//
//  wall holder for aircond remote control
//
//  design by egil kvaleberg, 5 october 2016
//
//  added support for chamfer
//

// size of compartment
comp_w = 46;
comp_d = 23;
comp_h = 52;
// width of front slot
slot_w = 34;
// width of slot lower lip
slot_lower = 16;
// corner radius of compartment
corner_r = 4;
// wall thickness of comparement
wall = 2.5;
// chamfer for top entry and bottom (typical value is 0.6)
chamfer = 0.0; // [0.0:0.1:2.0]
// diameter of mounting screws
mnt_dia = 2.5;

// generic tolerance
tol = 0.25;

d = 1*0.1;

module add() {
    // chamfered bottom section
    if (chamfer > 0) hull() for (sx = [-1,1]) for (sy = [-1,1])
        translate([sx*(comp_d/2-corner_r),sy*(comp_w/2-corner_r),-wall]) {
            cylinder(r1=wall+corner_r-chamfer, r2=wall+corner_r, h=chamfer, $fn=30);
        }
    // main section
    hull() for (sx = [-1,1]) for (sy = [-1,1])
        translate([sx*(comp_d/2-corner_r),sy*(comp_w/2-corner_r),chamfer-wall]) {
            cylinder(r=wall+corner_r, h=wall+comp_h-chamfer, $fn=30);
        }
}

module sub() {
    // main compartment
    hull () for (sx = [-1,1]) for (sy = [-1,1])
        translate([sx*(comp_d/2-corner_r),sy*(comp_w/2-corner_r),0]) {
            cylinder(r=corner_r, h=comp_h+d, $fn=30);
    }
    // main compartment, chamfered section
    if (chamfer > 0) hull () for (sx = [-1,1]) for (sy = [-1,1])
        translate([sx*(comp_d/2-corner_r),sy*(comp_w/2-corner_r),comp_h-chamfer]) {
            translate([0,0,]) cylinder(r1=corner_r, r2=corner_r+chamfer+d, h=chamfer+d, $fn=30);
    }
    // slot in front
    translate ([0,0,slot_lower+comp_h/2]) rotate([0,-90,0]) hull () for (sx = [-1,1]) for (sy = [-1,1])
        translate([sx*(comp_h/2-corner_r),sy*(slot_w/2-corner_r),0]) {
            cylinder(r=corner_r, h=comp_h+d, $fn=30);
    }
    // mounting holes
    translate ([comp_d/2-d,0,comp_h/2]) rotate([0,90,0]) for (sy = [-1,1])
        translate([0,sy*slot_w/4,0]) {
            cylinder(d1=mnt_dia+2*tol+2*wall*0.6, d2=mnt_dia+2*tol, h=d+wall*0.6, $fn=30);
            cylinder(d=mnt_dia+2*tol, h=d+wall+d, $fn=30);
    }
}
    // mounting holes
    if (0) color("red") translate ([comp_d/2-d,0,comp_h/2]) rotate([0,90,0]) for (sy = [-1,1])
        translate([0,sy*slot_w/4,0]) {
            cylinder(d=mnt_dia+2*tol, h=d+wall+d, $fn=30);
    }

    // main structure:
    difference () {
        color("red") add();
        difference () {
            sub();
            //
        }
    }

```