[User]
I'd like to create a customizable dog tag using OpenSCAD. It should have a main plate, a hole for a keyring, the dog's name on the front, and two lines of text on the back.

Here are the specifics I need to be able to adjust:

**Plate Dimensions:**
*   I need to be able to set the length of the plate in millimeters. I'd like a slider to adjust this, with a range of 40 to 80 mm, in 10mm increments (40, 50, 60, etc).
*   I also need to set the height of the plate, also in millimeters, with a slider for 20-40mm, in 5mm increments (20, 25, 30, etc.)

**Keyring Hole:**
*   The design should include a circular hole for a keyring.
*   I need to adjust the diameter of this hole in millimeters, with a slider and specific values of 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, and 30.
*   I also need to specify the thickness of this hole in millimeters, with a slider that can be either 3 or 4.

**Dog's Name:**
*   There should be a text field where I can type in my dog's name.
*   I want to be able to pick from a dropdown list of fonts. I'd like these options: "Black Ops One", "Chewy", "Creepster", "Emblema One", "Faster One", "Freckle Face", "Knewave", "Lobster", "Pacifico", "Permanent Marker", "Plaster", "Press Start 2P", "Ranchers", "Shojumaru", and "ZCOOL KuaiLe".
*   I need a slider to adjust the size of the name text, ranging from 10 to 25.

**Back Text:**
*   There should be two text fields for information I can put on the back, like a phone number and city.
*   Each of these back lines of text should have their own slider to control the size of the text, ranging from 5 to 10.
*   For the back text, I would like to use the Comfortaa font, with the "Bold" style.

**Colors:**
*   I need to be able to select a color for the plate from a dropdown list, with options: "White", "Yellow", "Orange", "Red", "HotPink", "Purple", "Blue", "Cyan", "Lime", "Green", "Brown", "Gold", "Silver", and "Black".
*   I also need to choose a separate color for the dog's name, with the same color options as the plate.

**Other things:**
*  The plate should have a chamfered edge.
* The text on the back should be recessed into the plate, and the dog's name on the front should be raised above the plate.

Could you please create the OpenSCAD code for this? I'd prefer a single file if possible. I don't need any external libraries for this project.

[Assistant]
Customizable_Dog_Name_Tag.scad:
```
//Customizable Dog Name Tag by ficacador!

/* [Plate Dimensions] */

//Choose the lenght of the plate, in mm
lenght=60; // [40:10:80]

//Choose the height of the plate, in mm
height=30; // [20:5:40]

/* [Key Chain Ring size] */

//Choose the diameter of the key ring you want to use, in mm
ring_diameter=20; // [15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30]

//Choose the thickness of the key ring hole, in mm
ring_thickness=3; // [3,4]

/* [Name] */

//Type your dog's name
name="Buddy";

//Choose one of these cool fonts
name_font="Knewave"; // [Black Ops One,Chewy,Creepster,Emblema One,Faster One,Freckle Face,Knewave,Lobster,Pacifico,Permanent Marker,Plaster,Press Start 2P,Ranchers,Shojumaru,ZCOOL KuaiLe]

//Resize the name to best fit the plate
name_size=14; // [10:25]

/* [Text on the back] */

//Text on the first line, for ex. your phone number
line_1="123456789";

//Resize the first line to best fit the plate
line_1_size=7; // [5:10]

//Text on the second line, for ex. your town
line_2="San Junipero";

//Resize the first line to best fit the plate
line_2_size=5; // [5:10]

/* [Colors] */

//Choose a color for the plate
plate_color="Brown"; // [White,Yellow,Orange,Red,HotPink,Purple,Blue,Cyan,Lime,Green,Brown,Gold,Silver,Black]

//Chose a color for the name
name_color="Lime"; // [White,Yellow,Orange,Red,HotPink,Purple,Blue,Cyan,Lime,Green,Brown,Gold,Silver,Black]

/* [Hidden] */

thickness=ring_thickness+2;
name_height=1;
line_1_font="Comfortaa:style=Bold";
line_2_font="Comfortaa:style=Bold";
lines_depht=0.4;

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

//Plate
color(plate_color){
    difference(){
        difference(){
            minkowski(){
                linear_extrude(thickness-2){
                    translate([-(lenght/2-height/2),0,0])
                        circle(d=height-4,$fn = 80);
                    translate([(lenght/2-height/2),0,0])
                        circle(d=height-4,$fn = 80);
                    square([(lenght-height),height-4],center=true);
                }
//Chamfer
                {
                cylinder(1,0,1,center=true,$fn = 20);
                translate([0,0,1])
                cylinder(1,1,0,center=true,$fn = 20);
                }
            }
        }
//Hole
        translate([0,height/2,thickness/2]){
            rotate_extrude()
                translate([ring_diameter/2,0,0])
                    circle(d=ring_thickness,$fn = 20);
        }

//Text
        linear_extrude(lines_depht){
            translate([0,height/5,0])
                rotate([180,0,180])
                    text(line_1,line_1_size,line_1_font,halign="center",valign="center");
            translate([0,-height/5,0])
                rotate([180,0,180])
                    text(line_2,line_2_size,line_2_font,halign="center",valign="center");
        }
    }
}
//Name
color(name_color){
    translate([0,0,thickness])
        linear_extrude(name_height)
            text(name,name_size,name_font,halign="center",valign="center");
}

```


[User]
Hey, I'm looking for a way to create some custom recessed spot inserts for my ceiling. I've got a bunch of 80mm holes already cut for some old lights, but I'm switching to smaller ones, and the gyproc is pretty weak, so the old lights were kind of wobbly. I need an insert that will stiffen up the existing hole, and also reduce the diameter for the new smaller lights.

I was thinking of something like a top hat shape, where the top brim would be glued into the 80mm hole. The inner cylinder of the top hat would then be the new mounting diameter, and the height of the inner cylinder would account for the thickness of the gyproc. I'd like to be able to customize all the dimensions, things like:

*   **Resolution:** The number of segments for all the circular parts.
*   **Support Seat Diameter:** The diameter of the brim that sits on the gyproc.
*   **Support Seat Thickness:** How thick the brim should be.
*   **Support Seat Rounding:** A percentage that controls how rounded the corners are on the brim (like a fillet).
*   **Outer Insert Diameter:**  The outer diameter of the main cylinder part of the top hat, it should be able to be set to the same diameter as the support seat, or less.
*   **Inner Insert Diameter:** The inner diameter of the cylinder which will fit the new lights, needs to be smaller than outer insert diameter.
*   **Insert Height:** How tall the cylinder is
*  **Insert Rounding**: percentage for corner radius on the inner cylinder, should also work to round the outer diameter of the cylinder.

I'd like to have the insert generated as a single solid object. I'm thinking OpenSCAD is the right way to do this, can you write me a parameterized `.scad` file that will generate this insert? No external libraries or anything please, just the stock OpenSCAD functions.

[Assistant]
recessed-spot-insert_v1.1.scad:
```
// recessed-spot-insert.scad
// Author: JoeGu
// last update: April 2019
// V1.1

// (number of segments for full circle)
resolution = 80; // [30:1:180]

// (mm)
support_seat_diameter = 84; // [50:0.1:100]

// (mm)
support_seat_thickness = 1.0; // [0.2:0.1:2]

// (percent of "Support Seat Thickness")
support_seat_rounding = 80; // [0:1:100]

// (mm, keep it lower or equal as "Support Seat Diameter")
outer_insert_diameter = 80.2; // [50:0.1:100]

// (mm, keep it lower as "Outer Insert Diameter")
inner_insert_diameter = 68.0; // [50:0.1:100]

// (mm)
insert_hight = 7.5; // [0.6:0.1:20]

// (percent of "Insert Thickness (Outer Diameter - Inner Diameter")
insert_rounding = 25; // [0:1:100]

if (outer_insert_diameter>support_seat_diameter)
    {outer_insert_diameter=support_seat_diameter;}
if (inner_insert_diameter>=outer_insert_diameter)
    {inner_insert_diameter=inner_insert_diameter-0.1;}

s_s_r = support_seat_thickness*support_seat_rounding/100;

i_r = (outer_insert_diameter - inner_insert_diameter)/2*insert_rounding/100;

$fn=resolution;
frf=0.2; // fragment remove factor

// generate insert
difference()
    { union()
        { cylinder(h=support_seat_thickness, r=support_seat_diameter/2, center=false);      cylinder(h=support_seat_thickness+insert_hight, r=outer_insert_diameter/2, center=false);
        }

        translate([0,0,-0.5]) cylinder(h=support_seat_thickness+insert_hight+1, r=inner_insert_diameter/2, center=false);
    difference()
    { translate([0,0,-frf]) rotate_extrude() translate([support_seat_diameter/2-s_s_r+frf,0,0]) square(s_s_r,s_s_r);
      translate([0,0,s_s_r]) rotate_extrude() translate([support_seat_diameter/2-s_s_r,0,0]) circle(r=s_s_r);
    }
    difference()
    { translate([0,0,-frf]) rotate_extrude() translate([inner_insert_diameter/2-frf,0,0]) square(s_s_r+frf,s_s_r+frf);
      translate([0,0,s_s_r]) rotate_extrude() translate([inner_insert_diameter/2+s_s_r,0,0]) circle(r=s_s_r);
    }
    difference()
    { translate([0,0,insert_hight+support_seat_thickness-i_r+frf]) rotate_extrude() translate([inner_insert_diameter/2-frf,0,0]) square(i_r+frf,i_r+frf);
      translate([0,0,insert_hight+support_seat_thickness-i_r]) rotate_extrude() translate([inner_insert_diameter/2+i_r,0,0]) circle(r=i_r);
    }
    difference()
    { translate([0,0,insert_hight+support_seat_thickness-i_r+frf]) rotate_extrude() translate([outer_insert_diameter/2-i_r,0,0]) square(i_r+frf,i_r+frf);
      translate([0,0,insert_hight+support_seat_thickness-i_r]) rotate_extrude() translate([outer_insert_diameter/2-i_r,0,0]) circle(r=i_r);
    }
    }

```


[User]
I'm looking to create a parametric OpenSCAD design for a template that will help me locate hinge holes for spool drawers, like the ones described in Thingiverse #3110569. I have already created a simple design for this using only OpenSCAD primitives, and would like you to create a similar design that is parametrically configurable. I'd like the ability to adjust:

**Hub Dimensions:**
*   Minimum diameter of the spool's hub hole (HubMinDiameterMM).
*   Maximum diameter of the spool's hub hole (HubMaxDiameterMM).
*   Height of the template hub that mates with the spool (HubHeightMM).
*   Diameter of the hole in the center of the template (HubHoleDiameterMM).

**Spool Dimensions:**
*   Maximum outside diameter of the spool (SpoolMaxDiameterMM).
*   Height of the spool (SpoolMaxHeightMM).

**Arm Dimensions:**
*   Width of an arm (ArmWidthMM).
*   Height (thickness) of an arm (ArmHeightMM).

**Arm Configuration:**
*   The angles at which the arms are generated. This should be a list of angles (ArmAnglesDEG).  I'd like to be able to adjust these and have the design respond appropriately, I'm not sure how OpenSCAD handles arrays in customizer.  I need to be able to specify the number of arms and the angle of each.

The template should include:
*   A central hub that is tapered, based on the minimum and maximum hub diameters.
*   Arms that extend outward from the hub.
*   Arms should be labeled with their angle.
*   Arms should include tick marks to help with consistent distance from the spool center.
*   A vertical arm that goes from the hub to the maximum height of the spool, that will allow for aligning the holes on both rims of the spool.

The design will essentially be used as a guide to drill holes, so it doesn't need to be suitable for printing, but if it could be I'm happy to take advantage of that. I don't have any particular preference for libraries.

[Assistant]
Customizable_Spool_Drawer_Template.scad:
```
///////////////////////////////////////////////////////////////////////////////
//
// SpoolDrawerTemplate.scad
//
// This file creates a template which may be used to determine the location of
// hinge holes for mounting filament spool drawers like Thingiverse #3110569
// (https://www.thingiverse.com/thing:3110569) or similar.
//
// The template can be used to determine the hinge holes for 8, 6, 4, and 3
// drawers per spool.  It also allows for aligning holes on the two opposite
// rims of the spool.  It is completely configurable.
//
// Features include:
// - Configurable hub dimensions.
// - Arms labeled with their associated angle.
// - Arms contain tick marks to assist in making consistent distance from spool
//   center.
// - Configurable nunber and angle of arms.  Initially set 5 arms at 0, 45, 60,
//   90, and 120 degrees to support 8, 6, 4, and 3 drawers per spool.
//   NOTE: I can't figure out how to use customizer to fill an array, so if there
//         is a need to modify the number of arms or the angles of any of their
//         arms, the "ArmAnglesDEG" vector will need to be manually modified.
// - Configurable length vertical arm to insure that the holes on both rims of
//   the spool align correctly.
//
// Author: J. M. Corbett
//
// History:
// 1.00 1/24/2019 Initial code.
//
///////////////////////////////////////////////////////////////////////////////

/* [Hub Dimensions] */

// (mm) Minimum diameter of the spool's hub hole.
HubMinDiameterMM   = 52;    // [10:100]

// (mm) Maximum diameter of the spool's hub hole.
HubMaxDiameterMM   = 55;    // [10:100]

// Height of the template hub that will mate with the spool.
HubHeightMM        = 8;     // [1:50]

// (mm) Diameter of hole in the center of the template.
HubHoleDiameterMM  = 45;    // [0:99]

/* [Spool Dimensiions] */

// (mm) Maximum outside diameter of the spool.
SpoolMaxDiameterMM = 202;   // [20:300]

// (mm) Height of the spool.
SpoolMaxHeightMM   = 70;    // [10:150]

/* [Arm Dimensions] */

// (mm) Width of an arm.
ArmWidthMM         = 10;    // [6:50]

// (mm) Height (thickness) of an arm.
ArmHeightMM        = 4;     // [2:20]

/* [Hidden] */

// (degrees) Angles at which the arms will be generated.  Don't know how to
//           make Customizer handle vectors.
ArmAnglesDEG       = [0, 360 / 3, 360 / 4, 360 / 6, 360 / 8];

///////////////////////////////////////////////////////////////////////////////
// ArmEnd()
// Generate the round end of an arm.  Argument "height" is the height of the
// generated arm end.  If this argument is omitted, the height of the arm will
// be used.
///////////////////////////////////////////////////////////////////////////////
module ArmEnd(height = ArmHeightMM)
{
    // Generate one quadrant of a cylinder.
    intersection()
    {
        // Generate a cylinder of the requested height.
        cylinder(r = ArmWidthMM, h = height);
        // // Lop off all but the first quadrant.
        cube([ArmWidthMM, ArmWidthMM, height]);
    }
}

///////////////////////////////////////////////////////////////////////////////
// Arm()
// Generate an arm.  Argument "s" is a text string to be used as a label for the
// arm.  If this argument is omitted, no label will be generated.
///////////////////////////////////////////////////////////////////////////////
module Arm(s = "")
{
    difference()
    {
        // Start with a conplete arm with rounded end.
        union()
        {
            cube([ArmWidthMM, SpoolMaxDiameterMM / 2, ArmHeightMM]);
            translate([0, SpoolMaxDiameterMM / 2, 0]) ArmEnd();
        }
        // Add (remove) tick marks to the arm.
        for (i = [SpoolMaxDiameterMM / 2 - 20 : 2 : SpoolMaxDiameterMM / 2 + 2])
        {
            translate([-.01, i, -.01]) cube([ArmWidthMM / 2, .8, ArmHeightMM / 3]);
        }

        // Add (remove) the label if one was requested.
        translate([ArmWidthMM / 4, SpoolMaxDiameterMM / 4, ArmHeightMM / 3 - .01]) rotate([0, 0, 90]) rotate([180, 0, 0]) linear_extrude(height = ArmHeightMM / 3)
            text(text = str(s), size = ArmWidthMM / 2);
    }
}

///////////////////////////////////////////////////////////////////////////////
// Arms()
// Generate all the arms that are specified by "ArmAnglesDEG".
///////////////////////////////////////////////////////////////////////////////
module Arms()
{
    // Loop through all the angles specified by "ArmAnglesDEG".
    for (deg = ArmAnglesDEG)
    {
        rotate([0, 0, deg]) Arm(deg);
    }
}

///////////////////////////////////////////////////////////////////////////////
// Hub()
// Generate the hub at the center of the template.  The generated hub will be
// tapered based on the values of "HubMaxDiameterMM" and "HubMinDiameterMM".
// NOTE: "HubMaxDiameterMM" must be greater than or equal to "HubMinDiameterMM".
///////////////////////////////////////////////////////////////////////////////
module Hub()
{
    $fn = 100;
    cylinder(d = HubMaxDiameterMM, h = ArmHeightMM);
    translate([0, 0, ArmHeightMM]) cylinder(r1 = HubMaxDiameterMM / 2, r2 = HubMinDiameterMM / 2, h = HubHeightMM);
}

///////////////////////////////////////////////////////////////////////////////
// Template()
// Generate the entire template.
///////////////////////////////////////////////////////////////////////////////
module Template()
{
    $fn = 100;
    difference()
    {
        // Add the arms, hub, and the single extended arm end.
        union()
        {
            Arms();
            Hub();
            translate([0, SpoolMaxDiameterMM / 2, 0]) ArmEnd(SpoolMaxHeightMM + ArmHeightMM);
        }
        // Remove the hub hole.
        translate([0, 0, -1]) cylinder(d = HubHoleDiameterMM, h = HubHeightMM + ArmHeightMM + 2);
    }
}

///////////////////////////////////////////////////////////////////////////////
// GENERATE THE ENTIRE TEMPLATE.
///////////////////////////////////////////////////////////////////////////////
Template();
```


[User]
I'm looking to design a handlebar mount for a phone or other device, and it needs to be in two parts for printing with different materials. I have a basic idea from some existing code, but I want to start fresh with a parametric design.

The first part, which I’ll call the "sleeve," needs to be a rigid cylinder made from PLA that fits around the handlebar. The inside diameter needs to be adjustable, say `InnerDiameter` and default to 25 mm, and the outside diameter, which I'll call `OuterDiameter`, should default to 33 mm. It needs mounting holes, and I'd like them to be similar to the included file, which means having a central cutout with a smaller diameter on the "top" side of it. These two holes need to be on opposite sides of the cylinder.

The second part, the "clamp," will be printed from flexible filament, like FLEX. It's supposed to be a cube-like shape with a curved recess that matches the outer diameter of the sleeve, but it doesn't need to be a perfect half-cylinder, more like a U-shape or "clamp" that will press against the sleeve when assembled. The clamp's height is a parameter I'll call `clampHeight`, which needs to default to 16 mm. The clamp also needs to have circular cutouts through its "back" face so that it can flex to accommodate the sleeve.

The two parts should fit together such that the clamp grips the sleeve, which in turn sits on the handlebar.

I'd also like the design to be easily customizable using variables. I’ll need at least the following:

*   `InnerDiameter` (default 25mm)
*   `OuterDiameter` (default 33mm)
*   `clampHeight` (default 16mm)

Finally, I'd like to control which parts are rendered using a variable called `part` with options such as "first" for the sleeve, "second" for the clamp, and "both" to show both.

I'm hoping to have a modular design, and I'd like to keep the mount hole details in a module called `mounthole1`. I don't need any extra library support at the moment. I'm fine with using the standard OpenSCAD cylinder and cube primitives for the design.

[Assistant]
barmount.scad:
```
//CUSTOMIZER VARIABLES

InnerDiameter = 25;       //inner diameter
OuterDiameter = 33;       //outer diameter
clampHight = 16;             // high of p2 part

// Which one would you like to see?
part = "both"; // [first:Barmount_sleve-print_PLA ,second:Clamp_cube-print_FLEX ,both:Sleve and Clamp]

module both(){
    translate([0,0,-0.05]){barmount();}    // print from PLA, disable with "*" for export to stl
    translate([0,25,0]){barmount_p2();}  // print from FLEX, disable with "*" for export to stl
    }

module barmount_sleve_PLA(){
    translate([0,0,-0.05]){barmount();}    // print from PLA, disable with "*" for export to stl
    }

module clamp_cube_FLEX(){
    translate([0,25,0]){barmount_p2();}  // print from FLEX, disable with "*" for export to stl
    }

/* [Hidden] */

  //recalculation
  Rin= InnerDiameter /2;
  Rout= OuterDiameter /2;
  h= clampHight;

module print_part() {
	if (part == "first") {
		barmount_sleve_PLA();
	} else if (part == "second") {
		clamp_cube_FLEX();
	} else if (part == "both") {
		both();
	} else {
		both();
	}
}

module mounthole1(){
    difference(){
        union(){
            hull(){
                translate([-10.5,0,-3.8]){cube([2,14,10],true);}
                translate([-20.8, 0, -15.8]){
                rotate([90,0,0]){scale([1,0.9,1]){cylinder(14,Rout,Rout,true, $fn=30);}}}
                translate([0,0,-1]){ cylinder(4.4,5,5,true, $fn=30);}}}

        union(){
           cylinder(10,1.7,1.7,true, $fn=30);
           translate([0,0,-13]){cylinder(18, 3, 7.3/2,true, $fn=6);}
           translate([3,0,-13]){cylinder(18, 3, 7.3/2,true, $fn=6);}
            }}
}
module barmount(){

    difference(){
        union(){
            translate([21,0,-1.15])mounthole1();
            translate([-21,0,-1.15])rotate([0,0,180]){mounthole1();    }}

        union(){
            hull(){
                translate([0,0,-14]){rotate([90,0,0]){cylinder(16,Rin,Rin,true,$fn=40); }}
                translate([0,0,0]){rotate([90,0,0]){cylinder(16, Rin, Rin,true,$fn=40);  } }}}
    }
}

module barmount_p2(){

    difference(){
        union(){
           translate([-Rin-1, -18/2, -h+6])cube([Rin*2+2,18,h-6],false);}

        union(){
            scale([0.95,1.05,1]){barmount();}
        for(yuy =[-8: 4.1: 8.4]){
            translate([0,yuy,-h]){rotate([90,0,0]){cylinder(2.2, 23.9/2, 23.9/2,true,$fn=40); }}
            translate([0,yuy+2, -h]){rotate([90,0,0]){cylinder(2.2, 24.5/2, 24.5/2,true,$fn=40);}}}
        }
    }
}

print_part();

```


[User]
Okay, I'm looking to create a moon-shaped shelf, kind of like the one in this picture: [https://i.pinimg.com/originals/81/50/4e/81504e8454e1d60c73e0daf83650b0e4.jpg]. I want it to be parametric so I can adjust the size, shelf details, etc. I'm envisioning a couple of versions, one for 2D cutting (like for my CNC router) and a 3D version.

Here's a breakdown of what I need:

**Overall Moon Shape:**

*   It should be a crescent moon, not a full circle. The actual moon shape should be created by subtracting a second circle, offset from the first, from the first circle.
*   I need to be able to specify the diameter of the moon.
*   I need to be able to specify the x and y offsets of that second subtracting circle.
*   I also want to have the option to split the moon in half horizontally for larger builds. If split, I want to have some sort of joint at the split point - I’d prefer the bulb joint from this Thingiverse design: [https://www.thingiverse.com/thing:714413/]. I don’t need the code for the joint, but the code for the moon needs to use it if a split is required.  I'm assuming I'll need to use the bulb_joint.scad library for that, is that correct?

**Shelves:**

*   There should be a main shelf that attaches to the moon. This main shelf has an adjustable length and width.
*   The main shelf needs to be able to rotate around the center of the moon. I need to specify the rotation angle.
*   I need to specify offsets for the shelf on the x and y axes, relative to the center of the moon.
*   The main shelf needs to have subdivisions—smaller, angled shelves that create a kind of layered effect. I need control over the width of these subdivisions and a count for how many there are. I'd like to be able to offset these subdivisions a bit from the edge of the shelf - imagine cutting off the edge at a 45 degree angle.
*   I'd like an option to make the main shelf double-thick by adding a second, identical shelf at a defined z-offset.

**Holes:**

*   I need to be able to add screw holes for attaching the main shelf to the moon. These need to be adjustable in terms of distance from each end of the shelf.
*   I need to add holes in the moon for securing it to the wall. I need control over their positions and diameters. I'd also like to include countersink holes for these mounting holes in the 3d version.
*   Finally, I'd like to be able to specify a diameter for all the screw holes.
*   I need to have two different circles acting as small shelves that sit on top of the main shelf - I'd like to control the diameter and depth of these circles relative to the thickness of the material and a depth offset for the holes.  These shelves should connect to the moon via a small tab.  I need to specify position x/y coordinates and a tab width.  I'd like there to be a tolerance value for these tabs - i.e. the hole is slightly bigger than the tab.

**Material:**

*   I need a variable for material thickness. It's 0.75 inches normally, but I want to be able to adjust it.
*   I also need a small tolerance value to add to some cutouts if necessary.

**2D vs 3D:**

*   For 2D, I just want the shapes as flat outlines suitable for cutting with a CNC router - think laser cutter output (paths).
*   For 3D, I need it to be a proper 3D model with proper thicknesses.

**Other:**
*   I use $fn=100 in most of my designs for curves.
*   I don't have any preference for the units of measure - I can always do the math myself.

I think that's everything. Can you help me create this project? I think it would be easiest to start with one file for the moon shape and shelf layout and separate out the joint into a separate file if that makes sense to you. Also, I'm not really familiar with using libraries - maybe you could just give me the full code for the bulb joint?

[Assistant]
moon_shelf_2d_3d.scad:
```
moon_3d=true; //if true, 3d, else 2d
moon_diameter=24*25.4;
moon_offset_x=180; //offset for piece not full
moon_offset_y=130;
split_moon_in_half=true; //if needed to fit in your work area
shelf_length=20*25.4;
shelf_width=2.5*25.4;
shelf_rotate=-45;
shelf_offset_x=-2*25.4;
shelf_offset_y=-2*25.4;
shelf_subdivision=2*25.4; //width of each one
shelf_subdivision_offset=-10;//offset the beginning of the smaller sections of the shelf
shelf_subdivision_count=6;//number of subdivisions
shelf_securement_holes_diameter=4;
shelf_securement_holes_position_left=45;//distance from each end - 2 screws
shelf_securement_holes_position_right=60;//distance from each end - 2 screws
double_shelf=true; //if true, will double the thickness of the smaller shelves
wall_securement_holes_diameter=5;
wall_securement_holes_countersink_diameter=10;
wall_securement_holes_countersink_depth=0.75*25.4*0.5;
wall_securement_holes_position=15;
wall_securement_holes_position_x_1=-170;
wall_securement_holes_position_y_1=200;
wall_securement_holes_position_x_2=50;
wall_securement_holes_position_y_2=-250;
circle_shelf_diameter=5*25.4;
circle_shelf_depth_offset=0;//increase or decrease the depth of the circle shelf - will change diameter somewhat too
circle_shelf_tab_width=2*25.4;
circle_shelf_tab_tolerance=2; //increase hole for tab by this amount
circle_shelf_position_x_1=-250;
circle_shelf_position_y_1=-60;
circle_shelf_position_x_2=-125;
circle_shelf_position_y_2=-200;
circle_shelf_z_offset=0.75*25.4;
material_thickness=0.75*25.4;
material_thickness_tolerance=1;
//include <../Joints/bulb_joint.scad>; //only used if moon is split in half
//circle_diameter and number and width are for the bulb joint if used
circle_diameter=20;
circle_number=10; //number per side 200
width=circle_diameter*circle_number;
joint_offset=15;

$fn=100;

module moon_whole(){
difference(){
circle(d=moon_diameter);
translate([moon_offset_x,moon_offset_y])
circle(d=moon_diameter);
translate([shelf_offset_x,shelf_offset_y]){
rotate([0,0,shelf_rotate]){
translate([-shelf_length/2+shelf_securement_holes_position_left,0]){
circle(d=wall_securement_holes_diameter);
}
translate([shelf_length/2-shelf_securement_holes_position_right,0]){
circle(d=wall_securement_holes_diameter);
}
}
}
translate([circle_shelf_position_x_1,circle_shelf_position_y_1])
square([circle_shelf_tab_width+circle_shelf_tab_tolerance,material_thickness+material_thickness_tolerance]);
translate([circle_shelf_position_x_2,circle_shelf_position_y_2])
square([circle_shelf_tab_width+circle_shelf_tab_tolerance,material_thickness+material_thickness_tolerance]);

translate([shelf_length/2-shelf_securement_holes_position_right,0,0]){
circle(d=wall_securement_holes_diameter);
}

translate([wall_securement_holes_position_x_1,wall_securement_holes_position_y_1])
circle(d=wall_securement_holes_diameter);

translate([wall_securement_holes_position_x_2,wall_securement_holes_position_y_2])
circle(d=wall_securement_holes_diameter);
}}

module moon_top(){
difference(){
moon_whole();
rotate([0,0,-135])
translate([-moon_diameter/2,0])
square([moon_diameter,moon_diameter*2]);
}

rotate([0,0,-135])
translate([moon_diameter/2-sqrt(moon_offset_x*moon_offset_x+moon_offset_y*moon_offset_y)+joint_offset,10])
bulb_joint();
}

module moon_bottom(){
difference(){
moon_whole();
rotate([0,0,135])
translate([0,-moon_diameter/2])
square([moon_diameter,moon_diameter]);

rotate([0,0,-135])
translate([moon_diameter/2-sqrt(moon_offset_x*moon_offset_x+moon_offset_y*moon_offset_y)+joint_offset,10])
bulb_joint();
}}

if (moon_3d==false){
if (split_moon_in_half==false){
moon_whole();}
else if (split_moon_in_half==true){
translate([-5,5])
moon_top();
translate([25,-30])
moon_bottom();
}
translate([200+shelf_offset_x,50+shelf_offset_y,0]){
rotate([0,0,shelf_rotate]){
difference(){
square([shelf_length,shelf_width],center=true);
for (a=[-shelf_subdivision/2:shelf_subdivision_count/2]){
translate([shelf_length/shelf_subdivision_count*a+shelf_subdivision_offset,0])
rotate([0,0,45])
square([shelf_subdivision,shelf_length/shelf_subdivision_count]);
}
}
}
}
if (double_shelf==true){
translate([250+shelf_offset_x,100+shelf_offset_y,0]){
rotate([0,0,shelf_rotate]){
difference(){
square([shelf_length,shelf_width],center=true);
for (a=[-shelf_subdivision/2:shelf_subdivision_count/2]){
translate([shelf_length/shelf_subdivision_count*a+shelf_subdivision_offset,0])
rotate([0,0,45])
square([shelf_subdivision,shelf_length/shelf_subdivision_count]);
}
}
}
}
}

translate([-10,30]){
difference(){
circle(d=circle_shelf_diameter);
translate([-circle_shelf_diameter/2,circle_shelf_depth_offset])
square([circle_shelf_diameter,circle_shelf_diameter]);
}
translate([-circle_shelf_tab_width/2,circle_shelf_depth_offset])
square([circle_shelf_tab_width,material_thickness]);
}
translate([80,-50]){
difference(){
circle(d=circle_shelf_diameter);
translate([-circle_shelf_diameter/2,circle_shelf_depth_offset])
square([circle_shelf_diameter,circle_shelf_diameter]);
}
translate([-circle_shelf_tab_width/2,circle_shelf_depth_offset])
square([circle_shelf_tab_width,material_thickness]);
}
}

else if (moon_3d==true){
difference(){
cylinder(d=moon_diameter,h=material_thickness);
translate([moon_offset_x,moon_offset_y,-0.1])
cylinder(d=moon_diameter,h=material_thickness+0.2);
translate([shelf_offset_x,shelf_offset_y,0]){
rotate([0,0,shelf_rotate]){
translate([-shelf_length/2+shelf_securement_holes_position_left,0,0]){
cylinder(d=wall_securement_holes_diameter,h=material_thickness);
}
translate([shelf_length/2-shelf_securement_holes_position_right,0,0]){
cylinder(d=wall_securement_holes_diameter,h=material_thickness);
}
}
}
translate([circle_shelf_position_x_1,circle_shelf_position_y_1,-0.1])
cube([circle_shelf_tab_width+circle_shelf_tab_tolerance,material_thickness+material_thickness_tolerance,material_thickness+0.2]);
translate([circle_shelf_position_x_2,circle_shelf_position_y_2,-0.1])
cube([circle_shelf_tab_width+circle_shelf_tab_tolerance,material_thickness+material_thickness_tolerance,material_thickness+0.2]);

translate([wall_securement_holes_position_x_1,wall_securement_holes_position_y_1,-0.1])
cylinder(d=wall_securement_holes_diameter,h=material_thickness+0.2);

translate([wall_securement_holes_position_x_1,wall_securement_holes_position_y_1,material_thickness-wall_securement_holes_countersink_depth])
cylinder(d=wall_securement_holes_countersink_diameter,h=material_thickness);

translate([wall_securement_holes_position_x_2,wall_securement_holes_position_y_2,-0.1])
cylinder(d=wall_securement_holes_diameter,h=material_thickness+0.2);

translate([wall_securement_holes_position_x_2,wall_securement_holes_position_y_2,material_thickness-wall_securement_holes_countersink_depth])
cylinder(d=wall_securement_holes_countersink_diameter,h=material_thickness);
}

translate([shelf_offset_x,shelf_offset_y,material_thickness]){
rotate([0,0,shelf_rotate]){
difference(){
translate([0,0,material_thickness/2])
cube([shelf_length,shelf_width,material_thickness],center=true);
for (a=[-shelf_subdivision/2:shelf_subdivision_count/2]){
translate([shelf_length/shelf_subdivision_count*a+shelf_subdivision_offset,-0.1])
rotate([0,0,45])
cube([shelf_subdivision,shelf_length/shelf_subdivision_count,material_thickness+0.2]);
}
}
}
}
if (double_shelf==true){
translate([shelf_offset_x,shelf_offset_y,material_thickness*2]){
rotate([0,0,shelf_rotate]){
difference(){
translate([0,0,material_thickness/2])
cube([shelf_length,shelf_width,material_thickness],center=true);
for (a=[-shelf_subdivision/2:shelf_subdivision_count/2]){
translate([shelf_length/shelf_subdivision_count*a+shelf_subdivision_offset,-0.1])
rotate([0,0,45])
cube([shelf_subdivision,shelf_length/shelf_subdivision_count,material_thickness+0.2]);
}
}
}
}
}

translate([circle_shelf_position_x_1+circle_shelf_tab_width/2+circle_shelf_tab_tolerance/2,circle_shelf_position_y_1+material_thickness_tolerance/2,circle_shelf_z_offset]){
rotate([-90,0,0]){
difference(){
cylinder(d=circle_shelf_diameter,h=material_thickness);
translate([-circle_shelf_diameter/2,circle_shelf_depth_offset,-0.1])
cube([circle_shelf_diameter,circle_shelf_diameter,material_thickness+0.2]);
}
translate([-circle_shelf_tab_width/2,circle_shelf_depth_offset,0])
cube([circle_shelf_tab_width,material_thickness,material_thickness]);
}
}

translate([circle_shelf_position_x_2+circle_shelf_tab_width/2+circle_shelf_tab_tolerance/2,circle_shelf_position_y_2+material_thickness_tolerance/2,circle_shelf_z_offset]){
rotate([-90,0,0]){
difference(){
cylinder(d=circle_shelf_diameter,h=material_thickness);
translate([-circle_shelf_diameter/2,circle_shelf_depth_offset,-0.1])
cube([circle_shelf_diameter,circle_shelf_diameter,material_thickness+0.2]);
}
translate([-circle_shelf_tab_width/2,circle_shelf_depth_offset,0])
cube([circle_shelf_tab_width,material_thickness,material_thickness]);
}
}
}

//bulb joint modules follow
module bulb_joint_mirror(){
mirror([0,1])
bulb_joint();
}

module bulb_joint(){
difference(){
translate([0,-circle_diameter])
square([width,circle_diameter*1.5]);
top_half();
translate([0,sin(45)*circle_diameter/2])
square([width,circle_diameter*1.5]);
}
bottom_half();
}

module top_half(){
difference(){
for (a=[0:(circle_number-1)]){
translate([2*sin(45)*a*circle_diameter,0])
circle(d=circle_diameter);
}

translate([-circle_diameter/2,-circle_diameter/2])
square([circle_diameter/2,circle_diameter]);

translate([width,-circle_diameter/2])
square([100,circle_diameter*2]);
}

}

module bottom_half(){
difference(){
for (a=[0:(circle_number-1)]){
translate([circle_diameter*sin(45)+2*sin(45)*a*circle_diameter,circle_diameter*sin(45)])
circle(d=circle_diameter);
}

translate([-circle_diameter/2,-circle_diameter/2])
square([circle_diameter/2,circle_diameter]);

translate([width,-circle_diameter/2])
square([100,circle_diameter*2]);
}
}
```


[User]
Okay, so I need a new hotend fan duct for my 3D printer. I've got the existing SCAD file (Hotend-Fan-DuctV1.1.scad) which I'm basing this off of. I've also described it above. Basically, it's designed for a 40x40mm fan and a cylindrical heat sink.

Here’s what I need:

First, it should be parametric, so I can easily adjust it for different hotend and fan sizes in the future. I'd like to be able to adjust the following parameters:

*   `dh`: diameter of the heat sink.
*   `hh`: height of the heat sink.
*   `hl`: clamping length of the heat sink clamp.
*   `dfh`: distance between the fan and the heat sink.
*   `wt`: wall thickness of the duct.
*   `fan_size`: size of the fan (e.g. 40 for 40x40mm).
*   `screw_diameter`: screw size for mounting the fan.

The design consists of two main parts:

1.  **Fan Carrier:** This part holds the fan and attaches to the heat sink clamp. It's got some screw holes for mounting the fan and a main opening with a gradually reducing diameter that attaches to the heat sink clamp.
2.  **Heat Sink Clamp:** This part clamps around the cylindrical heat sink. It should have a hole for the heat sink and a clamping mechanism on one side.

I also need the option to choose between a normal and a heavy version, similar to the `hv` variable in the original code. The heavy version adds some material for more stability. I'd rather have it as a boolean variable like `heavy_version = true/false`.

I'd also like to include a basic screw module in the main scad file for visualizing the screw placement, but it doesn't actually need to generate a screw for printing. Something simple like the existing "SchraubeM3" should be fine.

Could you please generate an OpenSCAD file (or files if it makes sense to organize it this way) to do all this? I’d prefer not to rely on any external libraries for this design, as I don’t think I’ll need them for something so simple. I just need it to work out of the box using basic OpenSCAD functions.

Oh, and one more thing! The current design has a small gap between the fan carrier and the clamp, which I’ve now enlarged. Could you make sure the air gap between the fan carrier and clamp is easily adjustable via parameter too? Maybe something like `air_gap`?

Thanks!

[Assistant]
Hotend-Fan-DuctV1.1.scad:
```
// -----------------------------------------------------
// Hotend-Fan-Duct V1.1 (40x40mm fan)
//
//  Detlev Ahlgrimm, 15.12.2018
//
//  27.01.2019  V1.1    Luftoeffung zwischen Traeger und Klemme vergroessert
// -----------------------------------------------------

// diameter heat sink
dh=22.3;

// height heat sink
hh=26;

// clamping length
hl=3;

// distance fan / heat sink
dfh=17;

// wall thickness
wt=1.2;

// normal / heavy version
hv=0;   // [0:normal, 1:heavy]

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

// -----------------------------------------------------
//
// -----------------------------------------------------
module LuefterTraeger() {
  difference() {
    union() {
      hull() {
        for(xy=[[1.5,1.5], [38.5,1.5], [1.5,38.5], [38.5,38.5]]) {
          translate([-40/2+xy[0], -40/2+xy[1], 0]) cylinder(d=3, h=2);
        }
      }
      translate([0, 0, 0]) cylinder(d1=40, d2=max(dh, hh), h=dfh);
    }
    for(xy=[[4,4], [36,4], [4,36], [36,36]]) {
      translate([-40/2+xy[0], -40/2+xy[1], -0.1]) cylinder(d=3.5, h=2.2);
    }
    translate([0, 0, -0.001]) cylinder(d1=40-2*wt, d2=max(dh, hh)-2*wt, h=dfh+0.002);
  }
}
//!LuefterTraeger();

// -----------------------------------------------------
//
// -----------------------------------------------------
module KuehlkoerperKlemme() {
  difference() {
    hull() {
      cylinder(d=dh+2*wt, h=hh);
      translate([-dh/2-wt, 0, hh/2]) rotate([0, -90, 0]) cylinder(d=max(dh, hh), h=2);
    }
    translate([0, 0, -10]) cylinder(d=dh, h=hh+20);
    translate([hl, -dh, -10]) cube([dh, 2*dh, hh+20]);
    translate([-dh/2-wt-2-0.01, 0, hh/2]) rotate([0, 90, 0]) cylinder(d1=max(dh, hh)-2*wt, d=min(dh, hh)-2*wt, h=dh/2+1);
    translate([-dh/2-wt-2-0.01, 0, hh/2]) rotate([0, 90, 0]) cylinder(d=min(dh, hh)-2*wt, h=dh);
  }
}
//!KuehlkoerperKlemme();

if(hv==0) {
  //translate([hh/2, 0, dfh+dh/2+2*wt]) rotate([0, -90, 0])
  {
    translate([-dfh-dh/2-wt-2, 0, hh/2]) rotate([0, 90, 0]) LuefterTraeger();
    KuehlkoerperKlemme();
  }
}

// -----------------------------------------------------
//  lg : Laenge Gewinde
//  lm : Laenge Mutter
// -----------------------------------------------------
module SchraubeM3(lg=20, lm=3.1) {
  union() {
    cylinder(r=3.1, h=lm, $fn=6);
    translate([0, 0, lm-0.1]) cylinder(d=3.3, h=lg+0.1);
  }
}

if(hv==1) {
  difference() {
    union() {
      hull() {
        cylinder(d=dh+2*wt, h=hh);
        translate([-dh/2-wt, -40/2, 0]) cube([wt, 40, hh]);
      }
      hull() {
        translate([-dh/2-wt, -40/2, 0]) cube([wt, 40, hh]);
        //translate([-dh/2-dfh, -40/2, hh/2-20]) cube([2, 40, 40]);
        for(xy=[[1.5,1.5], [38.5,1.5], [1.5,38.5], [38.5,38.5]]) {
          translate([-dh/2-dfh, -40/2+xy[0], hh/2-20+xy[1]]) rotate([0, 90, 0]) cylinder(d=3, h=2);
        }
      }
    }
    translate([0, 0, -0.1]) cylinder(d=dh, h=hh+0.2);
    translate([hl, -dh, -0.1]) cube([dh, 2*dh, hh+0.2]);

    translate([0, 0, hh/2]) rotate([0, -90, 0]) cylinder(d=min(dh, hh)-2, h=dh+dfh);
    translate([-dh/2-dfh-0.1, 0, hh/2]) rotate([0, 90, 0]) cylinder(d1=37, d2=min(dh, hh)-2, h=dfh-wt);

    for(xy=[[4,4], [36,4], [4,36], [36,36]]) {
      translate([-dh/2+2, -40/2+xy[0], hh/2-20+xy[1]]) rotate([0, -90, 0]) rotate([0, 0, 30]) SchraubeM3(3, dfh);
    }
  }
}

```


[User]
I'd like to design a parametric battery box with a mounting area for a HC-SR501 PIR sensor. I'd like the design to be configurable for different battery types (AA, AAA, C, D, and 20700 Li-Ion), a variable number of batteries, and have a lid with optional mounting pads. The overall dimensions should adjust based on the chosen battery type and the number of batteries.

Here's a more detailed breakdown:

**Battery Configuration:**

*   **Battery Types:**  The design should support AA, AAA, C (R14), D (R20), and 20700 Li-Ion batteries. Each type has different dimensions which will be parameterized internally, I am providing you with those below.
*   **Number of Batteries:** The number of batteries should be a configurable parameter.
*   **Battery Spacing:** There should be a consistent small gap between batteries. The exact value can be calculated internally based on battery diameter, as shown in my current SCAD code `bat_dist = bat_d+0.8;`.
*   **Battery Bed:** There should be a bed with end-stops to contain batteries, calculated according to the provided formulas for each battery type.
*   **Spring Gap**: There should be small gap for battery springs, whose values I am providing below per battery type.

**PIR Sensor Mounting:**

*   **PIR Dimensions:** The box should include a mounting area for a HC-SR501 PIR sensor. The PIR itself has a roughly spherical sensing element and a square PCB. The location and dimensions should be configurable as parameters, and I am providing you with those dimensions below. The PIR area should also have mounting holes for the PIR PCB, again, I have the dimensions below.
*   **PIR Placement**: There should be a space under the PIR for a small PCB like an ESP-01, so the box should be deep enough.
*  **PIR Mounting Posts:** Include mounting posts for securing the PIR PCB

**Box Design:**

*   **Box and Lid:** The design should consist of a box and a lid. These should be selected via a parameter, so only either the box or lid is rendered.
*   **Wall Thickness:** The wall thickness of the box and lid should be a configurable parameter.
*   **Rounded Corners:** The box and lid should have rounded corners. The radius of these corners should be a parameter.
*   **Mounting Holes:** The box and lid should have mounting holes, spaced at the corners. These holes should be sized for M3 bolts, meaning there should be clearance for the bolt head and nut.
*   **Lid Mounting Pads:** The lid should have optional mounting pads, again these should be configurable using a parameter. I want the pads to be rounded rectangular pads with holes for M3 mounting screws.

**Parameters:**

I've included some of the critical values that will need to be in the parameters:
```
// battery types, outer box dimenions, rim height, battery length and diameter
//type        0      1       2      3       4
a_outer_x =[63.0,  56.7,  62.6,    74.1, 82.0];
a_rim_h =  [15.0,  15.5,  26.0,    35.0, 22.0];
a_bat_l =  [50.5,  44.2,  50.1,    61.6, 70.0];
a_bat_d =  [14.2,  10.1,  26.3,    34.3, 20.0];
a_bat_s =   [3.6,   3.6,   3.6,     3.6,  3.0];//spring
```
```
// data for PIR
pir_c_x =21.5; // center x
pir_c_y = 23.5; // center y
pir_d = 23.1; // PIR sphere diameter
pir_w = 23.1; // plastic square pir dimension
pir_h = 4; // distance from top of sphere to PCB
pir_holes = 29; //distance between mounting holes
```
```
// Bolt head/nut clearance
outer_corner_thread = 3.25;
```

I'd like the design to be created using OpenSCAD, and I'd like it to be parametric, so I can easily adjust the parameters above as needed. Also, for ease of use, I'd prefer the design to be in one SCAD file if that is possible.

Thank you!

[Assistant]
PIR_v7.scad:
```
//*************************************
//***  choose battery type, number and parts ***
// Types 0=AA, 1=AAA,  2=C battery(R14), 3=D battery(R20), 4=Li-Ion 20700
type =4;
//lid, box
part = "box";  //  ["lid","box"]
// mounting pads on lid
pads = "true"; //["true","false"]
// number of batteries
bat_num = 6;
//wall thickness
thick = 1.6; //[1:2]
// Hole for thread. In this case M3
outer_corner_thread = 3.25;
// ************************************

make();

module make(){ //to hide from customizer
// dimensionsfor different types of batteries
//type        0      1       2      3       4
a_outer_x =[63.0,  56.7,  62.6,    74.1, 82.0];
a_rim_h =  [15.0,  15.5,  26.0,    35.0, 22.0];
a_bat_l =  [50.5,  44.2,  50.1,    61.6, 70.0];
a_bat_d =  [14.2,  10.1,  26.3,    34.3, 20.0];
a_bat_s =   [3.6,   3.6,   3.6,     3.6,  3.0];//spring

outer_corner = thick+2.5; // to make room for nut and bolt head

// data for PIR
pir_c_x =21.5;
pir_c_y = 23.5;
pir_d = 23.1; // PIR sphere diameter
pir_w = 23.1; // plastic square pir dimension
pir_h = 4; // distance from top of sphere to PCB
pir_holes = 29; //distance between mounting holes

// data for battery box
bat_l = a_bat_l[type];
bat_d = a_bat_d[type];
bat_s = a_bat_s[type];
bat_dist = bat_d+0.8; // distance between batteries

// dimensions
rim_h = a_rim_h[type]; // rim height
outer_x = a_outer_x[type]; // overall length
outer_y = 50.0+bat_num*bat_dist+2*thick; // overall width

delta = 0.05; // 0-wall adjust

if ( part == "box"){
difference(){
union(){
pir_lid(thick);
rim(rim_h);
translate([outer_x/2,outer_y-2*outer_corner,0])bat_bed() ;
%pcb();    //to show PIR pcb incl components
}
bolt_heads();
}
}

if (part == "lid"){

difference(){
union() {
rounded_square(outer_x,outer_y,outer_corner,thick);
rim(6);
if (pads=="true") mnt_pads();
}
bolt_heads(6); //$fn = 6 to make hole for nut
}
}

module rim(height){

difference (){
union() {
difference(){
rounded_square(outer_x,outer_y,outer_corner,height);
 // cutout rim
translate([thick,thick,-delta])rounded_square(outer_x-2*thick,outer_y-2*thick,outer_corner-thick,height+4*delta);
}

// add corner posts

for (i=[0:1]) for(j=[0:1])
cornerposts(outer_corner,i*outer_x-i*outer_corner*2,j*(outer_y-outer_corner*2),height);
}

// cutout holes in corner posts
for (i=[0:1]) for(j=[0:1])
cornerposts_hole(outer_corner,i*outer_x-i*outer_corner*2,j*(outer_y-outer_corner*2),height);
}
}

module pir_lid(height){

// lid with hole for the pir
difference() {
union(){
//the lid
rounded_square(outer_x,outer_y,outer_corner,height);
// square below PIR
translate([pir_c_x-pir_w/2-thick/2,pir_c_y-pir_w/2-thick/2,thick-delta]) cube([pir_w+thick,pir_w+thick,thick]);
}
//pir sphere
translate([pir_c_x,pir_c_y,thick/2]) sphere( d= pir_d , $fn=90);
}

// pir mounting posts
difference(){
//posts
for (i=[-1,1])  translate([pir_c_x,pir_c_y+i*pir_holes/2,0])cylinder (d=4, ,h=pir_h+thick, $fn=18);

// holes in posts
for (i=[-1,1])  translate([pir_c_x,pir_c_y+i*pir_holes/2,thick])cylinder (d=1.9, ,h=pir_h+thick, $fn=18);
}
}

module rounded_square (x,y,r,h){
hull(){

translate([r,r,0])cylinder(r = r,h = h, $fn = 36);
translate([x-r,r,0])cylinder(r = r,h = h , $fn = 36);
translate([r,y-r,0])cylinder(r = r,h = h, $fn = 36);
translate([x-r,y-r,0])cylinder(r = r,h = h , $fn = 36);
}
}

module cornerposts(rc,dx,dy,hz){ //
translate([rc+dx,rc+dy,0]) cylinder(r=outer_corner,h=hz, $fn=32);
}

module cornerposts_hole(rc,dx,dy,hz){
   translate([rc+dx,rc+dy,-delta]) cylinder(r=outer_corner_thread/2,h=hz+2*delta, $fn=10);
}

module bat_bed(){// bed for batteries

//Bed coordinates is centered around x axis and right most end of y.This gives freedom til resize box and batteries

translate ([-bat_l/2,-bat_num*bat_dist,-delta])
    union(){
    difference(){
    //bed
    translate([0,0,thick])cube([bat_l,bat_num*bat_dist,bat_d/2]);
    //batteries
    for (i=[0:bat_num-1]){ //subtract room for 3 batteries
    translate  ([0-delta,bat_dist/2+i*bat_dist,bat_d/2+thick+delta]) rotate([0,90,0])cylinder(d = bat_d, h=bat_l+2*delta,$fn=24);
    }
    }
 //battery end stops
 translate([-bat_s-thick,0,thick]) cube([thick,bat_num*bat_dist,rim_h-thick]);

 translate([bat_l+bat_s,0,thick]) cube([thick,bat_num*bat_dist,rim_h-thick]);
}
}

module bolt_heads (fn=32){ // cutout holes for bolt head/nut
bolt_h_d = 6;
bolt_h_h = 4;

for (i=[0:1]) for (j=[0:1])
translate([i*outer_x+(1- 2*i)*outer_corner,j*outer_y+(1- 2*j)*outer_corner,-delta])cylinder(r=bolt_h_d/2+0.15,h=bolt_h_h, $fn=fn);
}

module mnt_pads(){
  difference (){
  hull(){  // pads

  translate([2*outer_x/3,-3.5,0]) cylinder(r = 5.5, h=thick, $fn = 24);
  translate([2*outer_x/3,outer_y+3.5,0])cylinder(r = 5.5, h=thick, $fn = 24);
     }
  // holes in pads
   translate([2*outer_x/3,-3.5,-delta]) cylinder(r = 2, h=thick+2*delta, $fn = 24);
  translate([2*outer_x/3,outer_y+3.5,-delta])cylinder(r = 2, h=thick+2*delta, $fn = 24);
}
}

module pcb(){ //used to test size of PIR unit

 pcb_l = 25;
 pcb_w = 33;
 pcb_h = 10;
 translate([pir_c_x-pcb_l/2,pir_c_y-33/2,pir_h+thick]) cube([pcb_l,pcb_w,pcb_h]);
}
}
```


[User]
I'm looking to create a customizable comb attachment for my Philips Multigroom 3000 trimmer. I have some specific dimensions in mind, and I'd like it to be parametric so I can easily adjust it later.

Essentially, I need a comb with a number of tines (teeth) that are spaced appropriately to fit onto the trimmer head. The comb should have an attachment that clips onto the trimmer body.

Here's a breakdown of the parameters I'm thinking of:

**Comb Parameters:**

*   `height`: The cutting height of the comb, in mm. (e.g., 12 mm)
*   `tines`: The number of tines (teeth) in the comb. (e.g., 8)
*   `tine_width`: The width of each tine, in mm. (e.g., 1.15 mm)
*   `base_angle`: The angle between the clipper head and the base of the tines. (e.g., 15 degrees)

**Attachment Parameters:**

*   `trimmer_width`: The width of the trimmer body that the attachment will grip onto, in mm. (e.g., 32 mm)
*   `trimmer_length`: The length of the trimmer body that the attachment will grip onto, in mm. (e.g., 37 mm)
*   `trimmer_height`: The thickness/height of the trimmer body that the attachment will grip onto, in mm. (e.g., 3 mm)
*   `attach_wall`: The thickness of the attachment walls, in mm. (e.g., 2 mm)
*   `attach_front_clip`: The length of the front clip on the attachment, in mm. (e.g., 4 mm)
*  `attach_rear_clip`: The length of the rear clip on the attachment, in mm. (e.g., 5 mm)
*  `clip_depth`: How far the clip extends to hold the body, in mm. (e.g., 1.3 mm)

Could you generate an OpenSCAD file (or files, if that makes more sense for organization) that can create this comb attachment? I'm not very familiar with the BOSL library or anything like that, so please stick to core OpenSCAD functions only.

[Assistant]
trimmer.scad:
```

/* [Basic] */

// The cutting height in mm
height = 12;

/* [Advanced] */

// The number of tines or teeth in the comb
tines = 8;

// the width of the tines
tine_width = 1.15;

// angle between the clipper and the base of the tines
base_angle = 15;

/* [Attachment] */

trimmer_width = 32;
trimmer_length = 37;
trimmer_height = 3;
attach_wall = 2;
attach_front_clip = 4;
attach_rear_clip = 5;
clip_depth = 1.3;

/* [Hidden] */

tol = 0.01;
tol2 = 0.02;
full_width = trimmer_width + attach_wall * 2;
full_length = trimmer_length + attach_wall * 2;
front_overlap = attach_front_clip - attach_wall;
tine_spacing = (full_width - tine_width) / (tines - 1);
spring_gap = tine_spacing - attach_wall;

module trimmer() {
    difference() {
        cube([trimmer_width, trimmer_length, trimmer_height+tol]);
        rotate([30,0,0])
        cube([trimmer_width, trimmer_length, trimmer_height]);
    }
}

//trimmer();

module trimmer_attach_diff() {
    trimmer();
    translate([0, trimmer_length/2, -attach_wall-tol])
        cube([spring_gap, trimmer_length/2, attach_wall+tol2]);
    translate([trimmer_width - spring_gap, trimmer_length/2, -attach_wall-tol])
        cube([spring_gap, trimmer_length/2, attach_wall+tol2]);
    translate([0, trimmer_length - spring_gap,-attach_wall-tol])
        cube([trimmer_width, spring_gap, attach_wall+tol2]);
    translate([-attach_wall-tol, trimmer_length/2, 0])
        cube([(full_width - attach_rear_clip)/2+tol, trimmer_length, trimmer_height+tol]);
    translate([(trimmer_width + attach_rear_clip)/2, trimmer_length/2, 0])
        cube([(full_width - attach_rear_clip)/2+tol, trimmer_length, trimmer_height+tol]);
    translate([-attach_wall-tol, trimmer_length/2, 0])
        cube([full_width+tol2, trimmer_length/2 - attach_wall, trimmer_height+tol]);
}

module trimmer_attach() {
    difference() {
        union() {
            translate([-attach_wall, -attach_wall, -attach_wall])
                cube([full_width, full_length, trimmer_height + attach_wall]);
            translate([(trimmer_width-attach_rear_clip)/2, trimmer_length, 0]) {
                cube([attach_rear_clip, attach_wall, attach_rear_clip]);
            translate([0, 0, trimmer_height]) rotate([45,0,0])
                cube([attach_rear_clip, clip_depth, clip_depth]);
            }
        }
        translate([front_overlap, -attach_wall, -attach_wall-tol])
            cube([trimmer_width - front_overlap * 2, trimmer_length/4, trimmer_height+attach_wall+tol2]);
        trimmer_attach_diff();
    }
}

//trimmer_attach();

module tine() {
    max_h = height + trimmer_length * sin(base_angle);
    len = height + (trimmer_length+attach_wall) * cos(base_angle);
    difference() {
        translate([0, -height, -height]) {
            difference() {
                cube([tine_width, len, max_h]);
                translate([-tol,0,0]) {
                    rotate([45,0,0])
                        cube([tine_width+tol2, len, max_h]);
                    translate([0,1,-tol]) rotate([90,0,0])
                        cube([tine_width+tol2, len, max_h]);
                }
            }
        }
        translate([-tol,0,0]) {
        rotate([base_angle,0,0])
            cube([tine_width+tol2, len, max_h]);
        }
    }
}

//tine();

module assembly() {
    difference() {
        union() {
            rotate([base_angle,0,0]) trimmer_attach();
            translate([-attach_wall,0,0]) {
                for (x=[0:tines-1])
                    translate([x * tine_spacing, 0, 0])
                        tine();
            }
        }
        rotate([base_angle,0,0]) trimmer_attach_diff();
    }
}

assembly();

```


[User]
I'd like to design a parametric roller slider for a Kossel-style delta 3D printer, specifically to be a drop-in replacement for the Anycubic stock carriages.  I have the basic functionality and dimensions laid out, but I need help creating a configurable OpenSCAD design.

The design involves a slider that rides on a 20mm x 20mm aluminum extrusion rail using rollers. Here are the parameters I have in mind:

*   **Roller Dimensions:**
    *   `roller_effective_diameter`: The effective diameter of the roller (excluding the part that sits in the slot). I'd like this to be adjustable.
    *   `roller_inner_diameter`:  The inner diameter of the roller, which is the same as the screw diameter, also adjustable.
    *   `roller_thickness`: The thickness of the roller, to center it on the rail, and it should be adjustable as well.
*   **Mounting Hole Patterns:**
    *   `long_pattern_holes`: A boolean to enable a longer mounting hole pattern.
    *   `short_pattern_holes`: A boolean to enable a shorter (20mm x 20mm) mounting hole pattern. I want both patterns to be configurable in terms of the distance between holes. I think I'd like to be able to set the X and Y distances independently.
*   **General Dimensions and Tolerances:**
    *   `layer_height`:  Intended layer height for printing, for a one-layer patch over the nut holes (probably a good idea to calculate this).
    *   `tolerance`: An additional tolerance for bolts and nuts, since printer accuracy can be an issue. I want to be able to adjust this as needed, it'll probably be small, but something around 0.2mm is good.
*   **Other Dimensions:**
    *  `rail_width` should be 20mm by default, but needs to be configurable.
    *   `slider_thickness`: The main thickness of the slider body.
    *   `gap`: The gap between the rail and the slider body, this also needs to be configurable.
    *   `play`: The extra space on each side for easy sliding, I think this should be configurable as well.
    *  `nut_diameter`: the diameter of the nut to be used for mounting.
    *   `nut_height`: The height of the nut.
    *   `screw_diameter`: The diameter of the screws that will be used.
    *   `sink_flat`: The depth to sink the screws holding the rollers.
    *   `slider_length` : The overall length/height of the slider.
    *  `lever_arc_width`: the width of the lever arc.
    *   `rail_clearance`: Distance between the spacer tower and the extrusion.
    * `tighten_travel`: Distance the tightening mechanism travels.
    * `lever_tab_width`: The width of the tab on the lever.
    * `screw_shell`: Minimum material around screw holes.

The design should include:

*   A main slider body that fits on the 2020 extrusion.
*   Mounting holes for the carriage. I'd like to be able to set the hole positions for those.
*   Recesses for the nuts on both the carriage mounting holes and the roller screw holes.
*   Towers to hold the rollers with proper clearance.
*   A tightening mechanism using a screw and nut to push the slider towards the rail.

The code should be organized in a parametric way so that all of the above is adjustable. I would prefer the use of MCAD for the screw and nut geometry, but this isn't strictly required.

I think that's everything! Let me know if you need more info. I look forward to seeing what you come up with!

[Assistant]
roller_slider_anycubic_kossel.scad:
```
// The effective diameter of the roller, that is excluding that part that sinks into the slot (in mm)
roller_effective_diameter = 22;
// The roller inner diameter, which is supposed to coincide with the screw diameter (in mm)
roller_inner_diameter = 5;
// The roller thickness, so that we can center it on the rail (in mm)
roller_thickness = 11;
// Add longer mount option
long_pattern_holes = false;
// Add shorter (20 mm x 20 mm) mount option
short_pattern_holes = true;
// Intended layer height for final print. Will be used to generate a one layer thick patch to cover the M5 nut hole
layer_height = 0.2;
// Additional tolerance to ease up fit of nuts and bolts. Might be reduced if printer is well-tuned.
tolerance = 0.2;
//

/* [Hidden] */
layer_height=.2; extrusion_width=.5;
epsilon=.01;

module roller_slider(
 rail_w=20,                     // rail width, that is 20 for 2020 extrusion
 roller_h = 11,                 // roller width
 roller_od = 24,                // roller outer diameter, irrelevant, actually
 roller_d = 22,                 // roller effective diameter
 roller_id = 5,                 // roller inner diameter (i.e. screw diameter)
 roller_iod = 8.3,              // roller inner ring diameter (the support tower top diameter)
 thickness = 10,                // slider thickness 7
 gap = 4.0,                     // gap between the rail and the slider 0.5
 play = 0.1,                    // play on each side when not tightened
 nut_d = 5.4/cos(30),           // carriage mount screw dimensions
 nut_h = 3.1,
 screw_d = 3,
 sink_flat = 1.5,               // sink the big screw further this far
 l = 66,                        // slider length (height)
 arc_w = 10,                    // lever arc width
 rail_clearance=1.5,            // basically a distance between the spacer tower and the extrusion
 tighten_travel=4.5,            // how far can we travel for tightening
 tab_w=6,                       // lever tab width
 screw_shell=6                  // minimum shell around the screw
) {
 fnd=2*PI; fnr=2*fnd;
 long_pattern = [3.8*2,28.5*2];
 short_pattern = [20,20];
 sideways = rail_w/2 + roller_d/2 + play;
 base_d = roller_d-2*rail_clearance;
 roller_span = l-base_d;
 roller_z = thickness+rail_w/2-roller_h/2 + gap;
 arc_or = sideways+base_d/2-rail_w/2;
 tighten_y = max(base_d/2,short_pattern.y/2+nut_d/2)+screw_shell;
 module vitamins() {
  translate([-rail_w/2,-l/2-1,thickness+epsilon])
  cube(size=[rail_w,l+2,rail_w]);
 }//vitamins module
 module screwhole(what) {
  zr = 30;
  if(what=="out") {
   translate([0,0,-1])
   cylinder(d=screw_d+tolerance,h=thickness+2,$fn=screw_d*fnd);
   translate([0,0,thickness-nut_h]) rotate([0,0,zr])
   cylinder(d=nut_d+tolerance,h=nut_h+1,$fn=6);
  }else if(what=="in") {
   rotate([0,0,zr])
   cylinder(d=nut_d+tolerance,h=thickness-nut_h,$fn=6);
  }
 }//screwhole module
 module screwpattern(pattern,what) {
  for(sx=[-1,1]) for(sy=[-1,1])
   translate([sx*pattern.x/2,sy*pattern.y/2,0]) screwhole(what=what);
 }//screwpattern module
 module screwpatterns(what) {
  if(long_pattern_holes) {
    screwpattern(pattern=long_pattern,what=what);
  }
  if(short_pattern_holes) {
    screwpattern(pattern=short_pattern,what=what);
  }
 }//screwpatterns module
 module rolltower(what) {
  if(what=="base")
   cylinder(d=base_d,h=thickness,$fn=base_d*fnd);
  else if(what=="in") {
    translate([0,0,thickness-epsilon])
    cylinder(d1=base_d,d2=roller_iod,h=roller_z-thickness+epsilon,$fn=base_d*fnd);
  }else if(what=="out") {
   translate([0,0,5.7+layer_height])
   cylinder(d=roller_id+tolerance,h=roller_z+2,$fn=roller_id*fnd);
   cylinder(d=9.20+tolerance,h=4.20+sink_flat,$fn=6);
  }else if(what=="baseout") {
   translate([0,0,-1])
   cylinder(d=base_d,h=thickness+2,$fn=base_d*fnd);
  }
 }//rolltower module

 % vitamins();
 difference() {
  union() {
   difference() {
    // base plate
    translate([-rail_w/2,-l/2,0])
    cube(size=[rail_w,l,thickness]);
    translate([+sideways-tighten_travel,0,0]) rolltower(what="baseout");
   }
   // screws
   screwpatterns(what="in");
   // tower base are belong to us
   for(my=[0,1]) mirror([0,my,0]) hull() {
    translate([-sideways,roller_span/2,0]) rolltower(what="base");
    basebase=l/2-short_pattern.y/2+nut_d/2+2*extrusion_width;
    translate([-rail_w/2,l/2-basebase,0]) cube(size=[rail_w/2,basebase,thickness]);
   }
   hull() {
    translate([rail_w/2+arc_or-arc_w,-l/2+arc_or-epsilon,0])
    cube(size=[arc_w,l/2-arc_or+epsilon,thickness]);
    translate([+sideways,             0,0]) rolltower(what="base");
   }
   // towering genii
   translate([-sideways,+roller_span/2,0]) rolltower(what="in");
   translate([+sideways,             0,0]) rolltower(what="in");
   translate([-sideways,-roller_span/2,0]) rolltower(what="in");
   // arc
   difference() {
    translate([rail_w/2,-l/2+arc_or,0])
    cylinder(r=arc_or,h=thickness,$fn=arc_or*fnr);
    translate([rail_w/2,-l/2+arc_or,-1])
    cylinder(r=arc_or-arc_w,h=thickness+2,$fn=arc_or*fnr);
    translate([rail_w/2-arc_or-1,-l/2+arc_or,-1])
    cube(size=[arc_or*2+2,arc_or+1,thickness+2]);
   }
   // tab
   translate([sideways+base_d/2-tab_w,-base_d/2,0])
   cube(size=[tab_w,base_d/2+tighten_y+screw_shell,thickness]);
   // tightener
   translate([rail_w/2-epsilon,tighten_y-screw_shell,0])
   cube(size=[sideways+base_d/2-tab_w-tighten_travel-rail_w/2+epsilon,screw_shell*2,thickness]);
  }//union
  // screw it!
  screwpatterns(what="out");
  // big roller screwholes
  translate([-sideways,+roller_span/2,0]) rolltower(what="out");
  translate([+sideways,             0,0]) rolltower(what="out");
  translate([-sideways,-roller_span/2,0]) rolltower(what="out");
  // tightener screwhole
  translate([0,tighten_y,thickness/2]) rotate([0,90,0])
  cylinder(d=screw_d,h=sideways+base_d/2+1,$fn=screw_d*fnd);
  // tightener nut pocket
  hull() for(z=[thickness/2,thickness+nut_d])
  translate([rail_w/2 + (sideways+base_d/2-tab_w-tighten_travel-rail_w/2)/2,tighten_y,z])
  rotate([0,90,0])
  cylinder(d=nut_d+tolerance,h=nut_h+tolerance,center=true,$fn=6);
 }//difference

}//roller_slider module

roller_slider(
 roller_d  = roller_effective_diameter,
 roller_id = roller_inner_diameter,
 roller_h  = roller_thickness
);

```


[User]
I'd like a parametric bag clip design, similar to the one I found on Thingiverse (ID 3388572). It's a remix of another design (Thingiverse ID 330151) so you could probably start with that one, though I haven't looked at its SCAD.

The key parameters I need are:

*   `l_clip`:  The effective length of the clip, basically how wide of a bag it can clamp.
*   `w_clip`: The width of each arm of the clip.
*   `h_clip`: The height of the clip (thickness).
*  `th_hook`: The thickness of the hook at the end of the clip arm.
*  `th_ridge`: The thickness of the ridge that helps hold the clip closed.
*   `tol`: Tolerance between parts, for printing.
*   `alpha`: The opening angle for printing; it should be less than 90 degrees to prevent parts from fusing.

I'd like the following features and modules included, and they should be parametric based on the parameters above:

*   A basic clip body shape. It's essentially a rectangle but with an attachment point for a rotating piece on one end. This attachment should be an "eye" shape, basically a cylinder with a rectangular box that it attaches to with. I see there is a module for that (`eye()`)
*   A hook at the end of one arm with a barb on the end of it
*   A flexibility cut that will allow the clip arms to open and close
*   A ridge and matching recess to hold the clip closed.
*   The clip arms should be mirrored along the x-axis but rotated along the z-axis by alpha.
* I also see there's a module called `ccube()` which just creates a center-aligned cube based on a 3D vector, and I'd like that, as well.

The `eye()` module, the flexibility cut, the ridge and its recess, the hook and its barb - these are all essential, so please make sure those are included. Also, since this is for 3D printing, the design needs to accommodate some tolerance so I've included that parameter. Also, the current design includes `eps` (a small distance to ensure proper meshing), and I'd like that to be included, as well. The number of facets for circles should be parameterizable, also. (I don't need to set it to 64, but I'd like the option to modify it.)

Basically, I want to be able to adjust all the dimensions, the angles, and the tolerances and have a functioning clip produced. I don't want any assumptions about those values, they should be parameters that are set at the top of the SCAD. Please generate a single .scad file for the design, and please don't use any external libraries.

[Assistant]
Parametric_Bag_Clip.scad:
```
// Parametric Bag Clip - PLA compatible
// https://www.thingiverse.com/thing:3388572
// by Bikecyclist
// https://www.thingiverse.com/Bikecyclist
//
// Remixed from Bag Clip - PLA compatible
// https://www.thingiverse.com/thing:330151
// by MasterFX
// https://www.thingiverse.com/MasterFX

// Effective clip length - clamp bags of this width.
l_clip = 100;

// Width of clip (per arm)
w_clip = 5;

// Height of clip
h_clip = 10;

// Thickness of the hook
th_hook = 2;

// Thickness of the ridge
th_ridge = 1.5;

// Tolerance between parts
tol = 1;

// Opening angle for print (must be < 90 or parts will fuse)
alpha = 10;

/* [Hidden] */

// Number of facets
$fn = 64;

// Small distance to ensure proper meshing
eps = 0.01;

translate ([-(l_clip/2 + w_clip + tol), -w_clip/2, 0])
difference ()
{
    union ()
    {
        //Clip Body
        translate ([-tol/2, 0, 0])
        ccube ([l_clip + tol, w_clip, h_clip]);

        //Axle to Body Connection
        eye ();

        linear_extrude (h_clip, convexity = 10)
        projection (cut = false)
        intersection ()
        {
            eye ();

            translate ([2 * w_clip + tol + eps, 0, 0])
            ccube ([l_clip, w_clip, h_clip]);
        }

        //Hook Body
        translate ([-l_clip/2 - th_hook/2 - tol, (w_clip + th_hook + tol)/2, 0])
        ccube ([th_hook, 2 * w_clip + th_hook + tol, h_clip]);

        //Hook Barb
        translate ([-l_clip/2 - th_hook/2 - tol, 3/2 * w_clip + th_hook, 0])
        linear_extrude (h_clip)
        polygon
        ([
            [0, th_hook/2 + tol],
            [3/2*th_hook, -tol],
            [-th_hook/2, -tol],
            [-th_hook/2, th_hook/2 + tol],
        ]);
    }

    //Hook Gap
    translate ([-l_clip/2 - tol/2, th_hook, -eps])
    ccube ([tol, w_clip, h_clip + 2 * eps]);

    //Flexibility Cut
    translate ([-(l_clip + tol)/2 + w_clip/2 + tol/2 - eps, -w_clip/2 + th_hook + tol/2, -eps])
    ccube ([w_clip, tol, h_clip + 2 * eps]);

    //Ridge Recess
    translate ([0, w_clip/2, h_clip/2])
    rotate ([45, 0, 0])
    cube ([l_clip + 2 * eps, sqrt(2) * th_ridge + tol/2, sqrt(2) * th_ridge + tol/2], center = true);
}

rotate ([0, 0, -alpha])
translate ([-(l_clip/2 + w_clip) - tol, -w_clip/2, 0])
translate ([0, w_clip, 0])
mirror ([0, 1, 0])
{
    //Axle
    translate ([l_clip/2 + w_clip + tol, 1/2 * w_clip, 0])
    cylinder (d = w_clip, h = h_clip);

    //Clip Body
    translate ([-tol/4, 0, 0])
    ccube ([l_clip + tol/2, w_clip, h_clip]);

    //Axle to Body Connection
    translate ([w_clip/2 + tol, 0, h_clip/2])
    cube ([l_clip + w_clip, w_clip, h_clip/2], center = true);

    //Ridge
    translate ([-tol/4, w_clip/2, h_clip/2])
    rotate ([45, 0, 0])
    cube ([l_clip + tol/2, sqrt(2) * th_ridge, sqrt(2) * th_ridge], center = true);

}

module eye ()
{
    for (i = [-1, 1])
    translate ([w_clip + tol, 0, h_clip/2 - (h_clip/4 - tol)/2 + i * (h_clip/2 - (h_clip/4 - tol)/2)])
    difference ()
    {
        union ()
        {
            translate ([l_clip/2, w_clip/2, 0])
            cylinder (d = 2 * w_clip, h = h_clip/4 - tol);

            ccube ([l_clip, w_clip, h_clip/4 - tol]);
        }

        translate ([l_clip/2, w_clip/2, 0])
        translate ([0, 0, -eps])
        cylinder (d = w_clip + tol, h = h_clip + 2 * eps);
    }

}

module ccube (dim)
{
    translate ([0, 0, dim [2]/2])
    cube ([dim [0], dim [1], dim [2]], center = true);
}
```


[User]
I'm looking for an OpenSCAD design for a customizable L-shaped bracket, similar to the one I found on Thingiverse but with a few key changes and improvements. I've attached the original SCAD file for reference, named "Customizable_square_0.9.scad".

The basic idea is a simple, right-angled bracket that can be adjusted for different sizes and screw hole placements. I want to control the following parameters:

*   **Overall Dimensions:** Length, width, and height of the bracket.
*   **Screw Holes:** I want to control the number, diameter, and placement of screw holes on both the horizontal and vertical faces of the "L". This needs to include independent control over the head diameter and thread diameter for each screw hole.
*   **Screw Depth:** The depth of the countersink (or recess) for the screw heads should also be adjustable.
*   **Material Thickness:** This is the thickness of the bracket itself, which should be consistent across the entire form.
*   **Rounded Edges:** I'd like the option to have rounded edges/corners on the bracket. The radius should be adjustable. I'm not super concerned about the inner corner at the "L", so feel free to implement that in a reasonable way.
*   **Mounting Holes:** I also want to specify mounting hole parameters.
*   **Orientation:** The bracket's orientation can be important. I want to be able to set which of the two bracket faces is horizontal, rather than relying on the design's arbitrary selection of horizontal and vertical.

I'd also like to use the BOSL2 library for its improved parameters and capabilities, and for cleaner more readable code. Please use its `rotate_extrude` functionality for the roundovers and holes. I know that this is more efficient. And please make sure that any warnings or error messages are descriptive and easy to understand if parameters are outside of the bounds of the design.

Can you generate a new OpenSCAD design based on these requirements? Thanks!

[Assistant]
Customizable_square_0.9.scad:
```
//Customizable square by Trinner. Downloaded from Thingiverse.
//Version 0.9

// Open this file with OpenScad software (free and open-source)
// http://www.openscad.org/downloads.html
// Choose your parameters in the SETTINGS section
// Press F5 to compile and see the resulting hook
// Check your square in the preview window
// If OK, press F6 to render
// Go to : File => Export => Export as STL : choose filename and location
// Save the STL file of your customized square

//SETTINGS

//Dimensions
w = 20;
l = 50;
h = 25;

//Screw Diameter spacing
Dw=8; //Head Diameter w side. 0 to remove screws
dw=4; //Thread diameter w side. 0 to remove screws
Dh=6; //Head Diameter h side. 0 to remove screws
dh=3; //Head Diameter h side. 0 to remove screws

//Thickness from screw head to thing end
a=2;

//Color
color("YELLOW")

//Perfil
difference() {

$fn=20;

difference(){cube ([l,w,h]);
rotate ([atan(h/w),0,0])
cube ([l,sqrt((h*h)+(w*w)),h]);
};

//Screws xy (width)
translate ([l*(1/3),w*0.5, 0])
tornillo(Dw,dw);
translate ([l*(2/3),w*0.5, 0])
tornillo(Dw,dw);
//Screws xz (heigth)
rotate ([90,0,0])
translate ([l*(1/6),h*0.5, -w])
tornillo(Dh, dh);
rotate ([90,0,0])
translate ([l*(5/6),h*0.5, -w])
tornillo(Dh, dh);
}

module tornillo (D,d){
//Rosca
cylinder (h=h,r1=d/2, r2=d/2, $fn=30);
//Cabeza
translate ([0,0,a])
cylinder (h=h,r1=D/2, r2=D/2, $fn=30);
}

//Warning messages

if (a<0.4)
    echo (" WARNING : Thickness under the screw head seems too low. Your printer may not probably be able to print this ");
```


[User]
Hey, I'm looking to design a modular drawer system, and I need some help with the OpenSCAD code. I've seen some examples of this kind of thing, but I want to make sure mine has some specific features.

Essentially, I want to be able to generate drawers of varying sizes - think 1x1, 2x1, and 2x2 as starting points, but ideally, the system should be flexible enough to handle other sizes by specifying the width and height in terms of a base unit. The base unit should have its own configurable width and height. I'd like to control the depth of all the drawers using a single parameter. The corners should be rounded, and I want to control the radius of that rounding, or specify a diameter and have the radius calculated for me.

The drawers should have a handle, which I'd like to be able to control the width of, and how far it sticks out (protrusion).  The handles should be a slanted bar.

Importantly, the walls of both the drawer and the body should be configurable in thickness.

I'd also like a pattern of holes on the body of the drawers. These should be circular, with a configurable minimum and maximum diameter, and spacing between them. The pattern should be denser towards the center. They should be inset from the edges.

Finally, I need the drawers and bodies to tessellate with very small tolerances. I'd like to control the drawer-to-body gap separately from the inter-module gap (how closely multiple drawer units fit together).  I'd also like a system for interlocking the drawers horizontally and vertically using keys.

It looks like the Minkowski function is being used for rounding in the code I saw. Also, I see that the code uses `multmatrix`, `square`, `cube`, `circle`, `sphere`, `linear_extrude`, and `polygon`. There is some skewing happening too, with `tan()`. The code also uses a pattern, so some kind of `for` loop. Oh yeah, `resize()` and `cylinder()` too.

Could you help me generate the OpenSCAD code for this? I’m hoping that by specifying parameters, I can generate a lot of different configurations. I’d really appreciate it!

[Assistant]
drawer_module_flat.scad:
```
/* [Basic] */
// which model(s) to output
output = 0; // [0:Small drawer <1x1>, 1:Wide drawer <2x1>, 2:Big drawer <2x2>, 3:keys <for connecting drawers together>, 4:EVERYTHING!!]
// the width of the smallest (1x1) drawer
base_width = 60; // [40:100]
// the width of the smallest (1x1) drawer
base_height = 60; // [40:100]
// drawer depth
depth = 130; // [30:200]
// how rounded should the corners be? (set to zero to have compleltely squared off edges)
corner_radius = 5; // [0:10]

drawer_wall_thickness = 2.5; // [0.5:5]
body_wall_thickness = 3; // [0.5:5]

handle_width = 30; // [5:60]
// how far does the handle stick out from the drawer?
handle_protrusion = 7; // [3:20]

/* [Wall Pattern] */
pattern_inset   = 3;
// diameter of the largest hole
pattern_max_d   = 13;
// diameter of the smallest hole
pattern_min_d   = 2;
// space between holes
pattern_spacing = 15.5;

/* [Advanced] */
// how big a gap between drawer and body? Small values result in a tighter fit.
drawer_tessalation_tolerance = 0.5; // [0.2:2]
// how closely should multiple drawers fit together? Small values result in a tighter fit.
module_tessalation_tolerance = 0.3; // [0.1:1]

/* [Hidden] */
spacing = 15;

$fa = 10;
$fn = 360 / $fa;

module print_body(width = 1, height = 1)
{
    rotate([90, 0, 0])
        body(width, height);
}

if(output == 0)
{
    drawer();
    translate([0, -spacing, 0])
        print_body();
}
if(output == 1)
{
    drawer(2, 1);
    translate([0, -spacing, 0])
        print_body(2, 1);
}
if(output == 2)
{
    drawer(2, 2);
    translate([0, -spacing, 0])
        print_body(2, 2);
}
if(output == 3)
{
    key(1);
    translate([spacing * 2, 0, 0])
        mirror([1, 0, 0])
        key(2);
    translate([0, spacing * 2, 0])
        key(4);
}
if(output == 4)
{
    translate([spacing + base_width, -spacing * 2 - base_width, 0])
    rotate([0, 0, -90])
    {
        drawer();
        translate([0, -spacing, 0])
            print_body();
    }
    translate([])
    {
        drawer(2, 1);
        translate([0, -spacing, 0])
            print_body(2, 1);
    }
    translate([-base_width * 2 - spacing, 0, 0])
    {
        drawer(2, 2);
        translate([0, -spacing, 0])
            print_body(2, 2);
    }
    translate([spacing * 2 + base_width * 2, 0, 0])
    {
        key();
        translate([spacing * 2, 0, 0])
            mirror([1, 0, 0])
            key(2);
        translate([0, spacing * 2, 0])
            key(4);
    }
}
module rounded_square(size = [10, 10], center = false, cr = 2, cd = undef)
{
    cr = cr == undef ? cd / 2 : cr;

    if(cr > 0)
    {
        new_size = [ for(s = size) s - cr * 2 ];

        if(new_size[0] > 0 && new_size[1] > 0)
        {
            minkowski()
            {
                translate(center ? [0, 0] : [cr, cr])
                    square(size = new_size, center = center);
                circle(r = cr);
            }
        }
    }
    else
    {
        square(size = size, center = center);
    }
}
module rounded_cube(size = [10, 10, 10], center = false, cr = 2, cd = undef)
{
    cr = cr == undef ? cd / 2 : cr;

    if(cr > 0)
    {
        new_size = [ for(s = size) s - cr * 2 ];

        if(new_size[0] > 0 && new_size[1] > 0 && new_size[2] > 0)
        {
            minkowski()
            {
                translate(center ? [0, 0, 0] : [cr, cr, cr])
                    cube(size = new_size, center = center);
                sphere(r = cr);
            }
        }
    }
    else
    {
        cube(size = size, center = center);
    }
}
module skew(x_along_y = 0, x_along_z = 0, y_along_x = 0, y_along_z = 0, z_along_x = 0, z_along_y = 0)
{
    mtx = [
        [ 1, tan(x_along_y), tan(x_along_z), 0 ],
        [ tan(y_along_x), 1, tan(y_along_z), 0 ],
        [ tan(z_along_x), tan(z_along_y), 1, 0 ],
        [ 0, 0, 0, 1 ]
    ];
    multmatrix(mtx)
        children();
}

key_interface_angle   = 30;
key_inset_past_corner = 2;
key_depth             = depth / 3;

rear_frame_inset = 12;

handle_angle  = 45;
handle_height = handle_protrusion / tan(90 - handle_angle) * 2;

countersink_diameter = 7;
screw_hole_diameter  = 3.5;
countersink_height   = 3;

module stacked()
{
    assemble();
    translate([base_width, 0, 0])
        assemble();
    translate([base_width * 2, 0, 0])
        assemble(2, 2);
    translate([0, 0, base_height])
        assemble(2, 1);
    translate([0, 0, base_height * 2])
        assemble(4, 1);
}

module test_tessalation(width = 1, height = 1)
{
    intersection()
    {
        assemble(width, height);
        cube([width * base_width / 2, 999, height * base_height /  2]);
    }
}

module assemble(width = 1, height = 1)
{
    body(width, height);
    translate([body_wall_thickness + drawer_tessalation_tolerance, body_wall_thickness + drawer_tessalation_tolerance, body_wall_thickness + drawer_tessalation_tolerance])
        drawer(width, height);
    translate([base_width * width + module_tessalation_tolerance / 2, key_depth, -module_tessalation_tolerance / 2])
        rotate([-90, 0, 0])
        mirror([0, 0, 1])
        key(1);
    translate([-module_tessalation_tolerance / 2, key_depth, -module_tessalation_tolerance / 2])
        rotate([-90, 90, 0])
        mirror([0, 0, 1])
        key(1);
    translate([-module_tessalation_tolerance / 2, key_depth, base_height * height + module_tessalation_tolerance / 2])
        rotate([-90, 180, 0])
        mirror([0, 0, 1])
        key(1);
    translate([base_width * width + module_tessalation_tolerance / 2, key_depth, base_height * height + module_tessalation_tolerance / 2])
        rotate([-90, 270, 0])
        mirror([0, 0, 1])
        key(1);
}

module drawer(width = 1, height = 1)
{
    width         = width * base_width + (width - 1) * module_tessalation_tolerance - body_wall_thickness * 2 - drawer_tessalation_tolerance * 2;
    height        = height * base_height + (height - 1) * module_tessalation_tolerance - body_wall_thickness * 2 - drawer_tessalation_tolerance * 2;
    depth         = depth - body_wall_thickness - drawer_tessalation_tolerance;
    corner_radius = max(0, corner_radius - body_wall_thickness - drawer_tessalation_tolerance);

    echo("drawer inner dims: ", width - drawer_wall_thickness * 2, depth - drawer_wall_thickness * 2, height - drawer_wall_thickness, " (w,d,h)");
    echo(sqrt(pow(width - drawer_wall_thickness * 2, 2) + pow(depth - drawer_wall_thickness * 2, 2)), " (hyp)");

    difference()
    {
        intersection()
        {
            translate([corner_radius, 0, corner_radius])
                minkowski()
                {
                    translate([0, corner_radius, 0])
                            cube([width - corner_radius * 2, depth - corner_radius, height - corner_radius * 2]);
                    difference()
                    {
                        sphere(r = corner_radius);
                        translate([-500, 0, -500])
                            cube(999);
                    }
                }
            translate([-body_wall_thickness - drawer_tessalation_tolerance, -body_wall_thickness - drawer_tessalation_tolerance, -body_wall_thickness - drawer_tessalation_tolerance])
                rounded_cube([
                    width + body_wall_thickness * 2 + drawer_tessalation_tolerance * 2,
                    depth + body_wall_thickness + drawer_tessalation_tolerance,
                    height + body_wall_thickness * 2 + drawer_tessalation_tolerance * 2
                ], cr = corner_radius + body_wall_thickness + drawer_tessalation_tolerance);
        }
        translate([drawer_wall_thickness, drawer_wall_thickness, drawer_wall_thickness])
            rounded_cube([
                width - drawer_wall_thickness * 2,
                depth - drawer_wall_thickness * 2 - body_wall_thickness - drawer_tessalation_tolerance,
                999
            ], cr = corner_radius - drawer_wall_thickness);
    }

    translate([width / 2 - handle_width / 2, depth - drawer_wall_thickness, height / 2 - handle_height / 2])
        handle();

    module handle()
    {
        difference()
        {
            skew(y_along_z = 90 - handle_angle)
                cube([handle_width, drawer_wall_thickness, handle_height / 2]);
            translate([handle_width / 2, 0, 0])
                rotate([-90, 0, 0])
                resize([handle_width - drawer_wall_thickness * 2, 0, 0])
                cylinder(d = handle_height, h = 999);
        }
        translate([0, handle_protrusion, handle_height / 2])
            skew(y_along_z = handle_angle + 90)
            cube([handle_width, drawer_wall_thickness, handle_height / 2]);
        translate([drawer_wall_thickness, 0, 0])
            end();
        translate([handle_width, 0, 0])
            end();

        module end()
        {
            rotate([0, -90, 0])
                linear_extrude(height = drawer_wall_thickness)
                polygon(points = [[0, 0], [handle_height, 0], [handle_height / 2, handle_protrusion]]);
        }
    }
}

module body(width = 1, height = 1)
{
    width  = width * base_width + (width - 1) * module_tessalation_tolerance;
    height = height * base_height + (height - 1) * module_tessalation_tolerance;

    difference()
    {
        rounded_cube([width, depth, height], cr = corner_radius);
        translate([body_wall_thickness, body_wall_thickness, body_wall_thickness])
            rounded_cube([
                width - body_wall_thickness * 2,
                999,
                height - body_wall_thickness * 2
            ], cr = corner_radius - body_wall_thickness);
        translate([rear_frame_inset, -500, rear_frame_inset])
            rounded_cube([width - rear_frame_inset * 2, 999, height - rear_frame_inset * 2], cr = corner_radius);
        translate([0, depth / 2, height / 2])
            rotate([0, 90, 0])
            linear_extrude(height = 999)
            intersection()
            {
                dot_pattern(depth - pattern_inset * 2, pattern_min_d, pattern_max_d, pattern_spacing)
                    circle();
                square([height - pattern_inset * 2, depth - pattern_inset * 2], center = true);
            }
        translate([width / 2, depth / 2, -0.1])
            linear_extrude(height = body_wall_thickness + corner_radius + 0.2)
            intersection()
            {
                dot_pattern(depth - pattern_inset * 2, pattern_min_d, pattern_max_d, pattern_spacing)
                    circle();
                square([width - pattern_inset * 2, depth - pattern_inset * 2], center = true);
            }
        translate([width, 0, height])
            key_cutout();
        translate([width, 0, 0])
            rotate([0, 90, 0])
            key_cutout();
        translate([0, 0, 0])
            rotate([0, 180, 0])
            key_cutout();
        translate([0, 0, height])
            rotate([0, 270, 0])
            key_cutout();

        translate([width / 2, 0, height - corner_radius - body_wall_thickness - countersink_diameter / 2])
            rotate([-90, 0, 0])
            {
                cylinder(d1 = screw_hole_diameter, d2 = countersink_diameter, h = countersink_height);
                translate([0, 0, countersink_height])
                    cylinder(d = countersink_diameter, h = 999);
            }
    }

    translate([width / 2, 0, height - corner_radius - body_wall_thickness - countersink_diameter / 2])
        rotate([-90, 0, 0])
        difference()
        {
            cylinder(d = countersink_diameter + body_wall_thickness * 2, h = body_wall_thickness);
            cylinder(d1 = screw_hole_diameter, d2 = countersink_diameter, h = countersink_height);
            translate([0, 0, countersink_height])
                cylinder(d = countersink_diameter, h = 999);
        }

    module key_cutout()
    {
        rotate([90, 0, 0])
            translate([0, 0, -key_depth - module_tessalation_tolerance])
            linear_extrude(height = key_depth + module_tessalation_tolerance)
            key_section(true);
    }
}

module dot_pattern(d, min_dot_d, max_dot_d, spacing)
{
    r = d / 2;

    function get_dot_d(x, y) =
        sqrt(pow(x * spacing - r, 2) + pow(y * spacing - r, 2)) >= r ? 0 : (max_dot_d - min_dot_d) * (1 - sqrt(pow(x * spacing - r, 2) + pow(y * spacing - r, 2)) / r) + min_dot_d;

    for(x = [0 : ceil(d / spacing)])
        for(y = [0 : ceil(d / spacing)])
        {
            d = get_dot_d(x, y);
            if(d > 0)
                translate([x * spacing - r, y * spacing - r])
                    resize([d, 0], auto = true)
                    children(0);
        }
}

module key(num_interfaces)
{
    difference()
    {
        union()
        {
            section();
            if(num_interfaces > 1)
            {
                mirror([1, 0, 0])
                    section();

                if(num_interfaces > 2)
                {
                    mirror([1, 1, 0])
                        section();
                    mirror([0, 1, 0])
                        section();
                }
            }
        }
        dots();
        rotate([0, 0, 90])
            dots();
        rotate([0, 0, 180])
            dots();
        rotate([0, 0, 270])
            dots();
    }

    module dots()
    {
        translate([base_height / 2, 500, 0])
            rotate([90, 0, 0])
            linear_extrude(height = 999)
            intersection()
            {
                dot_pattern(depth - pattern_inset * 2, pattern_min_d, pattern_max_d, pattern_spacing)
                    circle();
                square([base_height - pattern_inset * 2, depth - pattern_inset * 2], center = true);
            }
    }

    module section()
    {
        intersection()
        {
            linear_extrude(height = key_depth)
                translate([-module_tessalation_tolerance / 2, -module_tessalation_tolerance / 2, 0])
                key_section();
            translate([-base_width - module_tessalation_tolerance / 2, -base_height - module_tessalation_tolerance / 2, key_depth - depth])
                rounded_cube([base_width, base_height, depth], cr = corner_radius);
        }
        linear_extrude(height = key_depth - corner_radius)
        {
            if(num_interfaces != 2)
            {
                translate([-corner_radius - key_inset_past_corner - module_tessalation_tolerance / 2, -module_tessalation_tolerance / 2 - 0.1])
                    square([key_inset_past_corner, module_tessalation_tolerance + 0.1]);
            }
            translate([-module_tessalation_tolerance / 2 - 0.1, -corner_radius - key_inset_past_corner - module_tessalation_tolerance / 2])
                square([module_tessalation_tolerance + 0.1, key_inset_past_corner]);

            if(num_interfaces == 1)
            {
                translate([
                    -corner_radius - key_inset_past_corner - module_tessalation_tolerance / 2 - body_wall_thickness / tan(key_interface_angle),
                    module_tessalation_tolerance / 2
                ])
                    flap_shape();
                translate([
                    module_tessalation_tolerance / 2,
                    -corner_radius - key_inset_past_corner - module_tessalation_tolerance / 2 - body_wall_thickness / tan(key_interface_angle)
                ])
                    mirror([1, 0, 0])
                    rotate([0, 0, 90])
                    flap_shape();
            }

        }

        module flap_shape()
        {
            width  = body_wall_thickness / tan(key_interface_angle) + key_inset_past_corner;
            height = min(drawer_wall_thickness, body_wall_thickness);
            polygon(points = [
                [0, 0],
                [width, 0],
                [width - key_inset_past_corner, height],
                [0, height]
            ]);
        }
    }
}

module key_section(as_cutout = false)
{
    inset   = as_cutout ? corner_radius + key_inset_past_corner + module_tessalation_tolerance : corner_radius + key_inset_past_corner;
    padding = as_cutout ? module_tessalation_tolerance : 0;

    translate([-base_width / 2, -base_height / 2])
        intersection()
        {
            difference()
            {
                rounded_square(
                    [base_width + padding, base_height + padding],
                    cr = corner_radius,
                    center = true
                );
                rounded_square([
                    base_width - body_wall_thickness * 2 - padding,
                    base_height - body_wall_thickness * 2 - padding
                ], cr = corner_radius - body_wall_thickness - (as_cutout ? module_tessalation_tolerance : 0), center = true);
            }
            union()
            {
                translate([base_width / 2 - inset, base_height / 2 - inset, 0])
                    polygon(points = [
                        [0, 0],
                        [-body_wall_thickness / tan(key_interface_angle), inset - body_wall_thickness],
                        [0, inset],
                        [inset, inset],
                        [inset, 0],
                        [inset - body_wall_thickness, -body_wall_thickness / tan(key_interface_angle)],
                        [0, 0]
                    ]);
                translate([base_width / 2 - inset, base_height / 2])
                    square([inset, padding]);
                translate([base_width / 2, base_height / 2 - inset])
                    square([padding, inset]);
            }
        }
}
```


[User]
I'd like to generate a parametric fan grill for standard PC case fans using OpenSCAD. I want to be able to specify the fan size (80mm, 92mm, 120mm, or 140mm) and have the screw holes automatically positioned correctly. The overall design should consist of an outer frame, and a hexagonal mesh filling the central area. The hex mesh should also be customizable in terms of size and height.

Here's a breakdown of the key features and parameters:

**General:**

*   `fan_size`: A parameter to select the fan size. The supported sizes are 80mm, 92mm, 120mm, and 140mm.

**Hex Fill:**

*   `hex_scale`: A scaling factor for the entire hex grid.
*   `hex_height`: The height/thickness of the individual hexagonal cells.

**Frame:**

*   `height`: The overall height/thickness of the outer frame.
*   `edge_radius`: The radius of the rounded corners on the outer frame.
*   `frame_thickness`: The minimum thickness of the frame.

**Hole Placement (Internal Calculation):**

*   The screw hole positions should be calculated based on the fan size. There are specific ratios for each fan size to determine the placement of those holes. You should use a lookup, or similar method to determine the appropriate spacing using these ratios:
    *   140mm:  `124.5 / 140`
    *   120mm: `104 / 120`
    *   92mm: `82.5 / 92`
    *   80mm:  `71.5 / 80`

The overall structure should involve a main module that combines the frame and the hex mesh, with screw holes removed from the final object. I also need separate modules to generate the frame, to position the screw holes, and to create the hex grid itself, with another separate module used to generate an individual hexagon.

I'd prefer if you could avoid using hardcoded numbers except for some of the defaults of the parameters themselves and if you could be thorough in making sure that the calculations work with all available fan sizes. I am going to be printing this model, so I need to make sure everything lines up. I'd prefer to avoid external libraries if at all possible, though I am flexible if it is necessary to accomplish this design.

[Assistant]
fanGrill.scad:
```
/* [General] */
fan_size = 120; // [80:80mm,92:92mm,120:120mm,140:140mm]

/* [Hex Fill] */

hex_scale = 1; // [0.2:0.1:2]
// The height of the hex mesh
hex_height = 1.2;

/* [Frame] */

// The height of the outer frame
height = 2.8;
// The radius of the outside corners
edge_radius = 5;
// The minimum thickness of the outer frame around the hole
frame_thickness = 2;

/* [Hidden] */

// these numbers come from googling the sizing specifications
holeRatio140 = 124.5 / 140;
holeRatio120 = 104 / 120;
holeRatio92 = 82.5 / 92;
holeRatio80 = 71.5 / 80;

holeRatio = fan_size == 80 ? holeRatio80 : (fan_size == 92 ? holeRatio92 : (fan_size == 120 ? holeRatio120 : (fan_size == 140 ? holeRatio140 : (.9))));

holeSpace = fan_size*holeRatio;
holeOffset = (fan_size - holeSpace) / 2;

difference(){
    union(){
		frame();
		intersection() {
			outsideFrame();
			grid();
		}
    }
    screwHoles();
}

module frame(){
	difference(){
		outsideFrame();
		translate([fan_size/2,fan_size/2,-1]){
			cylinder(r=(fan_size/2)-frame_thickness, h=height + 2, $fn=120);
		}
	}
}

module outsideFrame(){
    translate([edge_radius,edge_radius,0]){
		minkowski(){
			cube([fan_size-(edge_radius * 2),fan_size-(edge_radius * 2),1]);
			cylinder(r=edge_radius,h=height-1, $fn=60);
		}
    }
}

module screwHoles(){
    translate([holeOffset,holeOffset,-1]){
        cylinder(r=2.25, h=height + 2, $fn=60);
    }
    translate([fan_size-holeOffset,fan_size-holeOffset,-1]){
        cylinder(r=2.25, h=height + 2, $fn=60);
    }
            translate([fan_size-holeOffset,holeOffset,-1]){
        cylinder(r=2.25, h=height + 2, $fn=60);
    }
    translate([holeOffset,fan_size-holeOffset,-1]){
        cylinder(r=2.25, h=height + 2, $fn=60);
    }
}

module grid(){
	hexWidth = 33 * hex_scale;
	hexHeight = 19 * hex_scale;
    for (i =[0:(fan_size / hexHeight)]){
        for (j =[0:(fan_size / hexWidth)]){
            translate([hexWidth * j, hexHeight * i, 0]){
				scale(hex_scale)
					hexagon();
            }
        }
    }
    translate([16.5*hex_scale,9.5*hex_scale,0]){
        for (i =[0:(fan_size / hexHeight)]){
            for (j =[0:(fan_size / hexWidth)]){
                translate([hexWidth * j, hexHeight * i, 0]){
					scale(hex_scale)
						hexagon();
                }
            }
        }
    }
}
module hexagon(){
    difference(){
        cylinder(r=11,$fn=6,h=hex_height);
		translate([0,0,-1]) {
			minkowski(){
			    cylinder(r=8.5,$fn=6,h=hex_height + 2);
				cylinder(r=1,h=hex_height,$fn=30);
			}
        }
    }
}
```