[User]
Okay, I'd like to design a vase using OpenSCAD, and I'm looking for something that has a sort of twisted, organic shape. It should be based on extruding a regular polygon, but the diameter of that polygon should change along the height of the vase. I also want to be able to round the corners of the polygon.

Here's what I'm thinking:

*   The base of the vase should have a flat, solid bottom. I should be able to set the thickness of this base and the outer diameter of the vase at the very bottom.
*   The main body of the vase will be created by extruding a regular polygon that twists as it goes up. The extrusion's scale will be adjusted so that the polygon's diameter changes in a smooth, sinusoidal pattern along the vase's height. This gives it a wavy look. I want to specify the overall height of the vase, and also be able to control how much it twists from bottom to top, and the number of sides of the regular polygon.
*   I need to be able to control the thickness of the vase walls as well, so the inside needs to be hollowed out, also following the wavy shape.
*   It would be helpful if the code could control the radius of rounding applied to each vertex of the polygon, and the step size in height used when creating the segments of the vase.

Ideally, I'd like to have the following customizable parameters:

*   `ground_plate_thickness`: Thickness of the base plate.
*   `basediameter`: Outer diameter of the vase at its base.
*   `wall_thickness`: Thickness of the vase walls.
*   `height`: Total height of the vase.
*   `polygon_edges`: Number of sides of the polygon used to create the vase shape.
*   `delta_h`: Step size in height for creating the vase segments.
*   `polygon_rounding_radius`: Radius for rounding the corners of the polygon.
*   `twist`: Total rotation in degrees of the vase as it goes up

Please generate the OpenSCAD code for this vase, and be sure to avoid any dependencies on external libraries.

[Assistant]
Vase_custom_1.2.scad:
```
// Robert Niemöller [Robert2611]
// www.thingiverse.com/thing:1404809

/* [General] */

//Thickness of the ground plate
ground_plate_thickness  = 5;     //[1:20]
//Outer diameter at bottom
basediameter            = 50;    //[20:100]
//relative to the basediameter
wall_thickness          = 4;     //[1:10]
height                  = 100;   //[5:200]
polygon_edges           = 5;    //[3:1:20]

/* [Edvanced] */

//Stepsize in height for generating elements
delta_h                 = 1;     //[1:1:10]
//Radius for rounding the main polygon
polygon_rounding_radius = 3;     //[1:20]
//Total twist
twist                   = 1000;   //[0:1000]

//function for modulating the diameter
function func(z) = ( 0.25 * sin( z / height * 360 ) + 1 ) * basediameter;

$fn = 20;

difference(){
    union(){
        for( z = [ 0:delta_h:height ] ){
            d1 = func( z ); //this elements diameter
            d2 = func( z + delta_h ); //next elements diameter
            dt = twist / ( height / delta_h ); //only twist each part a fraction of the total twist
            difference(){
                //rotate so the orientation fits the twist of the element before
                rotate( [0, 0, -twist * z / height] )
                //move it to the right z position
                translate( [0, 0, z-0.01] )
                //extrude it with the partial twist and scale to fit the next elements size
                linear_extrude( height = delta_h+0.02, scale = d2 / d1, twist = dt, slices = 2)
                rounded_regular_polygon( d = d1, r = polygon_rounding_radius, n = polygon_edges );
            }
        }
    }
    union(){
        for( z = [ ground_plate_thickness:delta_h:height+delta_h ] ){
            //calculate the inner circle of the polygon
            //so the wall_tickness applies correctly for all values of polygon_edges
            d1i = func( z ) * cos( 180 / polygon_edges );
            d2i = func( z + delta_h ) * cos( 180 / polygon_edges );
            translate( [0, 0, z-0.01] )
            //linear_extrude( height = delta_h+0.2, scale = (d2i - 2*wall_thickness) / (d1i - 2*wall_thickness))
            //circle( d = d1i - 2*wall_thickness );
            cylinder(d1 = d1i - 2*wall_thickness, d2 = d2i - 2*wall_thickness, h=delta_h+0.02);
        }
    }
}

module rounded_regular_polygon( d = 10, r = 2, n = 5 ){
    if( r == 0){
        circle(d = d - 2 * r, $fn = n); //creates a regular polygon
    }else{
        minkowski(){
            circle(d = d - 2 * r, $fn = n);
            circle(r = r);
        }
    }
}

```


[User]
I'm looking to create a customizable cable spool, and I've got some parameters I need to be able to control. I've found some models on Thingiverse, but I need something that I can tweak to my exact specs.

Specifically, I want a two-part spool: a top and a bottom that are essentially mirror images of each other. The bottom part is what I'm focusing on for now. It needs to be a cylindrical disk with a larger outer diameter and a smaller inner diameter, creating a sort of ring. The height of the ring, as well as the wall thickness, needs to be adjustable. The inner part of the cylinder will extend in height a bit taller than the "wall" of the ring itself.

I also need a series of evenly spaced holes around the center of the ring. These holes should also have an adjustable diameter, and I need to be able to set the number of these holes, with the constraint that this number will allow for division into groups of 3, 4, or 5. If it doesn't divide by these numbers then the holes should be spaced equally.

Finally, there should be a series of 'spoke' cutouts between the inner and outer diameters, equally spaced around the ring. These also need to be customizable, with their width tied to the wall thickness.

I'd prefer the design to be done using parameters so I can easily change all of these values in the customizer. It should be parametric OpenSCAD code.

I think that covers it for now. Let me know if anything is unclear!

[Assistant]
cable_spool_bottom.scad:
```
$fn=100;

outer_dia =80;
inner_dia =47;
height=20;
//wall strength
wall=2;
//number of holes (should be devideable by num_holes)
holes=12;
//diameter of mounting holes
drill=3;

module calcdrill()
{

   n=0;

      if(holes%3==0) {
      for (i= [360/holes/2:360/3:360])
        {
            D=(outer_dia-(2*drill));
            R=D/2;
            translate ([R*sin(i),R*cos(i),0])cylinder(d=drill,h=wall+1);
        }
          }
 else if(holes%4==0) {
     for (i= [360/holes/2:360/4:360])
        {
            D=(outer_dia-(2*drill));
            R=D/2;
            translate ([R*sin(i),R*cos(i),0])cylinder(d=drill,h=wall+1);
        }
       }
 else if(holes%5==0) {
            for (i= [360/holes/2:360/5:360])
        {
            D=(outer_dia-(2*drill));
            R=D/2;
            translate ([R*sin(i),R*cos(i),0])cylinder(d=drill,h=wall+1);
        }  }
 else             {
            for (i= [360/holes/2:360/holes:360])
        {
            D=(outer_dia-(2*drill));
            R=D/2;
            translate ([R*sin(i),R*cos(i),0])cylinder(d=drill,h=wall+1);
        }  }

}

difference()
{
       union()
       {
         cylinder(d=outer_dia,h=wall);
         cylinder(d=inner_dia+wall,h=height);
       }
       cylinder(d=inner_dia,height+1);

        for (i= [0:360/holes:360])
        {
            D=inner_dia+((outer_dia-inner_dia)/2);
            R=D/2;
            translate ([R*sin(i),R*cos(i),0])cylinder(d=((outer_dia-inner_dia)/2-(2*wall)),h=wall+1);
        }

        // create the drilling holes
        calcdrill();
        /*
        for (i= [360/holes/2:360/num_drill:360])
        {
            D=(outer_dia-(2*drill));
            R=D/2;
            translate ([R*sin(i),R*cos(i),0])cylinder(d=drill,h=wall+1);
        }
        */

}

```


[User]
I'm looking to create a customizable cable spool in OpenSCAD, and I'd like to be able to adjust several key parameters. I'd like it to be in two parts, a top and a bottom, which can be customized independently but must use the same inner and outer diameters.

Here's what I need for both parts:

*   **Outer Diameter:** I need to be able to set the overall diameter of the spool.
*   **Inner Diameter:** I need to set the diameter of the central hole where the spool sits.
*   **Height:** The overall height of each spool part.
*   **Wall Thickness:** I need to define the thickness of the material.
*   **Number of Mounting Holes:** I need to be able to define how many mounting holes there are, and they should be evenly spaced.
*   **Mounting Hole Slot:** I need to define the size of the slot for the mounting holes.
*   The mounting holes should be slot shaped and have supporting webbing.

The mounting holes and the webbing will need to be created differently, depending on if the number of holes is divisible by 3,4 or 5 (otherwise they just use 1 starting point).

I'd like these to be parametric so that they are easily customized. Please write the necessary OpenSCAD code for me, creating two files `cable_spool_top.scad` and `cable_spool_bottom.scad`.

[Assistant]
cable_spool_top.scad:
```
// All Values should be the same as in cable_spool_bottom
$fn=100;

outer_dia =80;

//spool will sit INSIDE the inner diameter
inner_dia =47;

height=20;
//wall strength
wall=2;
//number of holes (should be devideable by num_holes)
holes=12;
//diameter of mounting holes
slot=2.5;

module calcslots()
{

   n=0;

      if(holes%3==0) {
      for (i= [360/holes/2:360/3:360])
            {
            D=(outer_dia);
            R=D/2;
            translate ([R*sin(i),R*cos(i),0])  rotate([0,0,360-i]) cube([slot,((outer_dia-inner_dia)-(wall*2)),wall*5],center=true);
            translate ([R*sin(i),R*cos(i),0])
                {   m=(outer_dia-inner_dia)/2;
                    rotate([0,0,360-i])
                    {translate([0,0,0])
                    {
                    difference()
                        {
                        cube([m,m,m],center=true);
                        translate([m/2+(slot/2),-m/2,0]) cylinder(d=m,h=m,center=true);
                        translate([-m/2-(slot/2),-m/2,0]) cylinder(d=m,h=m,center=true);

                        }

                    }
                    }
                }
            }
        }
    // end if 3 mod holes = 0
      else if(holes%4==0) {
      for (i= [360/holes/2:360/4:360])
            {
            D=(outer_dia);
            R=D/2;
            translate ([R*sin(i),R*cos(i),0])  rotate([0,0,360-i]) cube([slot,((outer_dia-inner_dia)-(wall*2)),wall*5],center=true);
            translate ([R*sin(i),R*cos(i),0])
                {   m=(outer_dia-inner_dia)/2;
                    rotate([0,0,360-i])
                    {translate([0,0,0])
                    {
                    difference()
                        {
                        cube([m,m,m],center=true);
                        translate([m/2+(slot/2),-m/2,0]) cylinder(d=m,h=m,center=true);
                        translate([-m/2-(slot/2),-m/2,0]) cylinder(d=m,h=m,center=true);

                        }

                    }
                    }
                }
            }
        }
    // end if 4 mod holes = 0
    else if(holes%5==0) {
      for (i= [360/holes/2:360/5:360])
            {
            D=(outer_dia);
            R=D/2;
            translate ([R*sin(i),R*cos(i),0])  rotate([0,0,360-i]) cube([slot,((outer_dia-inner_dia)-(wall*2)),wall*5],center=true);
            translate ([R*sin(i),R*cos(i),0])
                {   m=(outer_dia-inner_dia)/2;
                    rotate([0,0,360-i])
                    {translate([0,0,0])
                    {
                    difference()
                        {
                        cube([m,m,m],center=true);
                        translate([m/2+(slot/2),-m/2,0]) cylinder(d=m,h=m,center=true);
                        translate([-m/2-(slot/2),-m/2,0]) cylinder(d=m,h=m,center=true);

                        }

                    }
                    }
                }
            }
        }
    // end if 5 mod holes = 0
    else {
     i=360/holes/2;
            D=(outer_dia);
            R=D/2;
            translate ([R*sin(i),R*cos(i),0])  rotate([0,0,360-i]) cube([slot,((outer_dia-inner_dia)-(wall*2)),wall*5],center=true);
            translate ([R*sin(i),R*cos(i),0])
                {   m=(outer_dia-inner_dia)/2;
                    rotate([0,0,360-i])
                    {translate([0,0,0])
                    {
                    difference()
                        {
                        cube([m,m,m],center=true);
                        translate([m/2+(slot/2),-m/2,0]) cylinder(d=m,h=m,center=true);
                        translate([-m/2-(slot/2),-m/2,0]) cylinder(d=m,h=m,center=true);

                        }

                    }
                    }
                }

        }
    // end if 4 mod holes = 0

}

difference()
{
       union()
       {
         cylinder(d=outer_dia,h=wall);
         cylinder(d=inner_dia,h=height/2);
       }
       cylinder(d=inner_dia-wall,height+1);

        for (i= [0:360/holes:360])
        {
            D=inner_dia+((outer_dia-inner_dia)/2);
            R=D/2;
            translate ([R*sin(i),R*cos(i),0])cylinder(d=((outer_dia-inner_dia)/2-(2*wall)),h=wall+1);
        }

calcslots();

}

```


[User]
I'm trying to design a tool for taking inside measurements, kind of like the ones discussed in that ToolGuyd forum thread I linked. I've started messing around with OpenSCAD, but I'm struggling a bit.

Basically, I need a gauge head that has a rectangular opening. The outside will be a simple rectangular prism, and then I need to subtract out a smaller rectangular prism to create that opening. The overall thing should be roughly centered around the origin. I want the outside dimensions to be adjustable, and the inside opening to be adjustable separately. I'd also like to add a hole that goes all the way through, perpendicular to the long axis of the opening, for mounting it to something. This hole should also be parametric, with an adjustable radius.

I have a rudimentary version that I'll include, but it's pretty basic and I'd like it to be more robust and flexible. I'm imagining the following parameters:
* `inside_x`: The width of the interior opening
* `inside_y`: The height of the interior opening
* `wall_thickness`: How thick the walls of the gauge head are
* `length`: The length of the gauge head
* `screwhole_radius`: The radius of the through hole.

I was also thinking it would be good if I could optionally add a chamfer to the outer edges of the gauge head - maybe specify a chamfer size parameter? And also, maybe round the edges slightly instead of a sharp corner. If all that would be too much to keep things easily adjustable, I guess just the chamfer would be good.

I don't want to use any libraries if possible but if I had to, I'd prefer BOSL or BOSL2 if that's what works best.
```
inside_x = 13;
inside_y = 19.5;
wall_thickness = 2;
length = 25;
screwhole_radius = 1.5;

$fn=100;

difference() {

cube(size=[inside_x+wall_thickness*2, inside_y+wall_thickness*2, length], center = true);

cube(size=[inside_x, inside_y, length+2], center = true);

rotate([0,90,0])
    cylinder(h=inside_x, r=screwhole_radius);

}
```

[Assistant]
Parametric_Bar_Gauge_Head.scad:
```
inside_x = 13;
inside_y = 19.5;
wall_thickness = 2;
length = 25;
screwhole_radius = 1.5;

$fn=100;

difference() {

cube(size=[inside_x+wall_thickness*2, inside_y+wall_thickness*2, length], center = true);

cube(size=[inside_x, inside_y, length+2], center = true);

rotate([0,90,0])
    cylinder(h=inside_x, r=screwhole_radius);

}

```


[User]
Hey, I need a parametric design for a filament spool hub that I can 3D print. I'm using OpenSCAD, and I'd like to be able to adjust a number of things, like the spool hole diameter, the width of the spool, and the bearing size, if I decide to use one. I'm using a standard 608 bearing usually, but it would be great if the design allowed me to change that later.

Here are the main parameters I'm thinking of, kind of like how the provided code is set up:

*   **spool\_width**: This is the "length" of the spool hole. I'd like a good default around 62mm as eSUN 1kg spools are that size.
*   **spool\_hole\_diameter**: The diameter of the spool hole, again, 52mm is my current target. I see the original code had a valid range of 30-65mm, that seems good to me.
*   **bearing\_outer\_diameter**: This would be the outer diameter of the bearing; 22mm for a 608 bearing, valid range of 16-30mm sounds about right.
*   **bearing\_inner\_diameter**: The inner diameter of the bearing, 8mm for 608.
*   **bearing\_width**: The width of the bearing, 7mm for a standard 608.
*   **front\_thickness**: Depth of the front face of the hub, maybe start with 2mm?
*   **flaps\_width**: The width of the faceplate flaps. I want to have some flaps that prevent the hub from traveling too far into the spool, default of 1.5mm seems fine.
*   **gripper\_width**: The thickness of the grippers that will grip the spool hole. 3mm sounds good to start.
*   **tension\_width**: How much the tensioners at the end of the grippers protrude. Something like 0.5mm could work.
*   **gripper\_length**: How deep the edge grippers go, but there should be a default behavior for it if set to zero, which is that it extends about halfway into the spool hole as described in the example.

I like the way the example code had a preview of the spool, can you keep that in the code? It'd be nice to be able to see it. I'd also like the bearing to be optional – maybe I could use a boolean flag, like `use_bearing` to toggle it on or off.  I want the code to take care of the calculations necessary for the variables such as the radius from diameter, and I'm OK with it using the same variable names the example used, if that's easier. The design should still work if I don't specify a bearing, in which case, I just want a smooth hole without the bearing inset or lip.

I think you should use a few modules like the example did to keep things organized. Something like `spool_mock`, `bearing_mock`, `spokes`, `center_cap`, `base_shape`, `central_cutout`, `tensioner_chisel` and `main` sounds about right, to keep the code legible. The example also had a `rod_mock` but I'm not sure that is needed, so feel free to skip that if you think it's unnecessary.

I'd appreciate if you could also include some comments in the code to explain what each section and module is doing. This is all in one file - I don't need any fancy library.

Thanks!

[Assistant]
SpoolHub-v1.scad:
```
/****************************************************************
    Customizable parameters (shown as parameters in customizer)
****************************************************************/

//Spool width or "length" of the spool hole, eSUN 1kg is 62mm
spool_width = 62;

//The diameter of the spool hole, eSUN is about 52mm, valid range is about 30 - 65
spool_hole_diameter = 52;

//Outer bearing diameter, 608 is 22mm diameter, valid range is about 16-30mm
bearing_outer_diameter = 22;

//Affects the central hole, 608 is 8mm
bearing_inner_diameter = 8;

//Width of bearing, 608 is 7mm
bearing_width = 7;

//Depth of the faceplate / front depth (default: 2)
front_thickness = 2;

//Width of the faceplate flaps that prevent the whole hub from travelling inside the spool hole
flaps_width = 1.5;

//How thick the edge grippers are (3 or 2 recommended)
gripper_width = 3;

//How much the tensioners at the end of the gripper rods protrude. Increasing this should make the hub grip the spool harder.
tension_width = 0.5;

//How deep the edge grippers go. Set to zero for default (halfway inside the spool hole)
gripper_length = 0;

/****************************************************************
    Calculated vars (not shown)
****************************************************************/

//Set gripper depth to default value if not chosen
gripper_depth = gripper_length == 0 ? (spool_width/2 - 1) : gripper_length;

//Convenience vars
bearing_outer_radius = bearing_outer_diameter/2;
bearing_inner_radius = bearing_inner_diameter/2;
spool_hole_radius = spool_hole_diameter/2;

//Mockup of spool
module spool_mock(hole_radius=spool_hole_diameter, width=spool_width) {
    color([0.6,0.6,0.6]) difference() {
        //Spool
        cylinder(h=width, r=90);

        //Hole in spool
        translate([0,0,-1]) cylinder(h=width+2, r=hole_radius, $fn=256);
    }
}

//Mockup of a rod
module rod_mock() {
    translate([0,0,-50]) cylinder(h=130, r=4);
}

//Mockup of a bearing
module bearing_mock() {
    color([1,0.3,0.3]) difference() {
        translate([0,0,front_thickness]) cylinder(h=7, r=11);
        cylinder(h=10, r=4);
    }
}

module spokes() {
    step = 360/5;
    for(i=[1:5]) {
        rotate([0, 0, step * i]) translate([13,0,0]) rotate([0,0,40]) scale([0.8,2,1]) cylinder(gripper_depth, 6, 6,$fn=3);
        rotate([0, 0, step * i]) translate([18,11,0]) rotate([0,0,270]) scale([1,3,1]) cylinder(gripper_depth, 6, 6,$fn=3);
    }
}

module center_cap() {
    difference() {
        rotate([0,0,0]) cylinder(front_thickness, 11, 11 ,$fn=5);
        translate([0,0,-1]) cylinder(h=20, r=bearing_inner_radius+1);
    }
}

module base_shape() {
    difference() {
        union() {
            spokes();
            center_cap();
        }
        central_cutout();
    }
}

/* This is the shape of the empty space to be removed from the inside */
module central_cutout() {
    main_cutout_radius = spool_hole_radius - gripper_width;
    difference() {
        //Main cutout
        translate([0,0,front_thickness]) cylinder(80, main_cutout_radius, main_cutout_radius ,$fn=256);

        //Support for edge spool grippers
        difference() {
            translate([0,0,front_thickness]) cylinder(5, main_cutout_radius, main_cutout_radius ,$fn=256);
            translate([0,0,front_thickness-0.01]) cylinder(5.02, main_cutout_radius-6, main_cutout_radius ,$fn=256);
        }

        //Removed from main cutout:
        difference() {
            //Main bearing holder ring
            translate([0,0,front_thickness]) cylinder(bearing_width+2, bearing_outer_radius+6, bearing_outer_radius+1);

            //"Re-added": Top bearing holder edge
            translate([0,0,front_thickness + bearing_width]) cylinder(h=0.6, r=bearing_outer_radius-0.15);

            //This cone shape guides the bearing inside when pushing it in.
            translate([0,0,front_thickness + bearing_width + 0.6]) cylinder(1.5, bearing_outer_radius-0.15, bearing_outer_radius+0.7);
        }
    }
    //Bearing slot
    translate([0,0,front_thickness]) cylinder(h=bearing_width, r=bearing_outer_radius+0.1, $fn=256);

    //Bottom bearing bevelled edge (to make inner cylinder spin freely) 608zz inner spinning cylinder is 12mm diameter
    translate([0,0,-0.01]) cylinder(front_thickness+0.02, bearing_inner_radius+1, bearing_inner_radius+2.5);
}

//Tensioning flaps at end of gripper rods
module tensioner_chisel() {
    translate([0,0,gripper_depth-2]) difference() {
        cylinder(h=2, r=90);
        translate([0,0,-0.01]) cylinder(h=2.02, r1=spool_hole_radius+tension_width, r2=spool_hole_radius, $fn=256);
    }

    translate([0,0,gripper_depth-4]) difference() {
        cylinder(h=2, r=90);
        translate([0,0,-0.01]) cylinder(h=2.02, r1=spool_hole_radius, r2=spool_hole_radius+tension_width, $fn=256);
    }
}

module main() {
    difference() {
        base_shape();

        tensioner_chisel();

        //Main radius adjustment
        translate([0,0,1.6]) spool_mock(spool_hole_radius, gripper_depth-5);

        //This cuts the face plate flaps that prevent the whole item from travelling too far inside the spool hole.
        translate([0,0,-1]) scale([1,1,2]) spool_mock(spool_hole_radius+flaps_width);

        //Makes the flaps angled for easier removal from build plate
        difference() {
            cylinder(h=1, r=spool_hole_radius+flaps_width+0.01, $fn=256);
            cylinder(h=1, r=spool_hole_radius, $fn=256);
            translate([0,0,-0.01]) cylinder(h=1.02, r1=spool_hole_radius, r2=spool_hole_radius+flaps_width, $fn=256);
        }
    }
}

main();

```


[User]
Hi, I'm looking to design a customizable pen stand, and I've got some ideas on how I'd like it to work. I'm picturing a circular base with a bunch of spiral-like structures extending upwards, kind of like a cage, but more artistic.

I want to be able to control several parameters:

*   **Resolution:** This would control how smooth the curves are, and how detailed it is when rendered
*   **Height:** The overall height of the pen stand
*   **Radius:** The radius of the base of the stand.
*   **Base Thickness:**  How thick the base circle is.
*   **Spiral Thickness:** The thickness of the spiral rods that rise from the base.
*   **Spiral Number:** How many spiral rods there are.
*   **Spiral 1 Twist:**  The angle of twist for one set of spirals, making them curve in a particular direction.
*   **Spiral 2 Twist:**  The angle of twist for a second set of spirals, so they can twist in the opposite direction, potentially creating a cool interwoven effect.

I'd like the stand to start with a simple cylinder as a base, then have two sets of these spirals going up from the base, all evenly spaced around the radius, like this:

```
    base cylinder
   /   \  /   \
  /    \/     \
 /_____/\_____/
```

The code I've included should be able to achieve most of what I've described, but I'm open to new methods of accomplishing the same goal, as well as new features, if you think it makes sense. I'd like it if you could generate the OpenSCAD file(s) for me. I'm not using any external libraries at the moment, but if you think it makes sense to use one, I'm open to suggestions!

[Assistant]
PenStand_Thingiverse_V1_1.scad:
```
// Customizable Pen Stand v1.0 by EKOBEAN

//Menu Area Cor Customizer
//	Resolution
Resolution = 0;	//	[20:100]
//	Height of the Stand
Height = 100;	//	[40:220]
//	Radius of the Stand
Radius = 40;	//	[40:110]
//	Base Thickness !
Base_Thickness = 5;	//	[2:10]
//	Spiral Cross Section Thickness
Spiral_Thickness = 1;	//	[1:10]
//	Number of Spirals
Spiral_Number = 70;	//	[20:200]
//	Twist of the first spiral
Spiral1_Slope = 20;	//	[0:100]
//	Twist of the second spiral
Spiral2_Slope = 20;	//	[0:100]

//Script for the Pen Stand !
$fn=(Resolution);

translate ([0,0,Base_Thickness/2])
cylinder(r=Radius,h=Base_Thickness, center=true );
translate ([0,0,Base_Thickness/2])
rotate_extrude(){
translate ([Radius,0,0])
circle(r=Base_Thickness/2, center=true);}
translate ([0,0,Height])
rotate_extrude(){
translate ([Radius,0,0])
circle(r=Base_Thickness/2, center=true);}
translate ([0,0,Height/95])
for(r=[0:(360/Spiral_Number):360]){
rotate ([0,0,r])
linear_extrude (height=Height,twist=Spiral1_Slope)
translate ([Radius,0,0])
circle(Spiral_Thickness);}
translate ([0,0,Height/95])
for(r=[0:(360/Spiral_Number):360]){
rotate ([0,0,r])
linear_extrude (height=Height,twist=-Spiral2_Slope)
translate ([Radius,0,0])
circle(Spiral_Thickness);}
```


[User]
I'm looking to create a parametric tablet stand, specifically designed for holding a tablet in a tilted, portrait orientation, similar to a bedside alarm clock. I have a few specific design ideas in mind, and I'd like the stand to be adjustable to different tablet sizes.

Here's what I'm thinking:

1.  **Two-Legged Support:** The stand should consist of two mirrored support legs, one on either side of the tablet. Each leg will have a main vertical support section that cradles the tablet, and will be angled backwards for stability.
2.  **Adjustable Tilt Angle:** I'd like a parameter to control the tilt angle of the tablet, allowing the user to adjust the viewing angle. Let's start with a default of 15 degrees from upright, but it should be easily changed.
3.  **Tablet Thickness Parameter:** The design should be parametric for the tablet's thickness. This is really important to fit different tablets snugly.
4.  **Support Height Parameter:** The height of the main vertical support that holds the tablet needs a parameter. Ideally, it should be around 1/3 of the tablet height, though I need the ability to tweak this.
5.  **Bezel Width Parameter:** The width of the support "bracket" where the tablet rests, should also be adjustable to accommodate different bezel sizes.
6.  **Wall Thickness Parameter:** I need a parameter for the wall thickness of the stand, to control its strength.
7.  **Bottom Charge Port Support:** An optional "lift" parameter to elevate the bottom of the support bracket to allow the tablet to rest on it without blocking the charge port. I'd like this to default to zero, so that it only gets used when needed.
8.  **Signature Detail:** I have a signature detail I'd like to add to each support leg; a stylized 'X' shape. I'll describe this later, it's fairly simple.
9. **Leg Base:** The base of the stand needs to ensure stability with a wider stance. The base should be composed of two cuboid sections attached perpendicular to the support legs. I would like to ensure that one of the dimensions of this cuboid is equal to the wall thickness.

The design should generate both the right and left legs. It needs to take into account the tilt angle to correctly position the parts and the base. The code would ideally be written using basic OpenSCAD primitives, no external libraries are needed.

I hope that's clear, let me know if you have any questions.

[Assistant]
TabletStand.scad:
```
left=1; //Show left leg (1 or 0)
right=1; //Show right Leg (1 or 0)
angle=15; //Tilt angle from upright
depth=10.45; //tablet thickness
height=45; //Support height, 1/3 of tablet height
width=8; //bracket width, bezzel size
wall=2; //Wall thickness
ChargerHeight=0; //support lift for bottom charge port

LiftHeight=sin(angle)*(depth+wall*2); //Do not adjust
AngleLength=cos(angle)*(depth+wall*2); //Do not adjust

if (right==1)rotate([90,0,0])translate([0,0,LiftHeight+wall])RightSide();
if (left==1)mirror([0,1,0])rotate([90,0,0])translate([0,0,LiftHeight+wall])RightSide();

module RightSide(){
    translate([0,0,0]){
        rotate([0,angle,0]){
            difference(){
                cube([depth+wall*2,width+wall,height+wall+ChargerHeight]);
                union(){
                    translate([wall,wall,wall+ChargerHeight])cube([depth,width+wall,height+wall+ChargerHeight]);
                    translate([width/2,.9,height/4])rotate([90,0,0])Signature();
                }
            }
        }
    }
    translate([0,0,-LiftHeight])cube([depth*2,wall,LiftHeight]);
    translate([AngleLength,0,-LiftHeight])cube([height*1.75-AngleLength,wall,depth]);
    translate([0,0,-LiftHeight])cube([height*1.75,depth*2,wall]);
}

module Signature(){
    cube([1,4,1]);
    translate([0,4,0]){
        rotate([0,0,45])translate([0,-3,0]){
            difference(){
                cube([3,3,1]);
                translate([1,1,-1])cube([3,3,3]);
            }
        }
    }
    translate([4.95,3.29,0]){
        rotate([0,0,-45])translate([0,-3,0]){
            difference(){
                cube([3,3,1]);
                translate([1,1,-1])cube([3,3,3]);
            }
        }
    }
    translate([2.83,-0.95,0])cube([1,2.12,1]);
}

```


[User]
Hey, I need some help designing a parametric plate in OpenSCAD. I've got the basic idea but I want it to be more flexible.

I'm looking for a rectangular plate made up of a grid of smaller square units. Each unit will have a square hole in the center and a diamond-shaped extrusion around that square hole. Think of a Vex Robotics style plate, but I want to be able to easily change the overall plate size, unit size, hole size, and thickness.

Specifically:

*   **Overall Plate Dimensions:** I need to control the width and length of the plate in terms of the *number* of grid units, as well as the size of each of these grid units, and the thickness of the plate.
*   **Unit Details:** Each unit should be a square, and they need to have a square hole in the center. The diamond shape should be centered on the unit, and should be an extrusion (or, perhaps a flat area that's less thick than the base).
*   **Parametric Control:**  I need to control the overall plate width and length (in units), the unit width/length, the hole size, the thickness, and the diamond size.
*   **OpenSCAD Libraries:** I'm not using any special libraries right now, but if there are libraries that would help with the diamond creation and/or making sure things are centered, please do. I want to make sure the diamond aligns perfectly on the square unit.

It would be great if you could generate an OpenSCAD file (or files, if that makes more sense) to do this. Thanks!

[Assistant]
Vex_plate.scad:
```
width=5;            //width in number of squares
length=10;           //length in number of squares
thickness=1;  //0.046 is the original if printed in plastic this should be thicker.

unit_width=0.5*2.54*10;  //the width of each unit, the vex unit is 0.5in
union(){
    for(j=[0:width-1]){
        union(){translate([0,unit_width*j,0]){
            for(i=[0:length-1]){
                translate([unit_width*i,0,0]) vex_unit();
                }
            }
        }
    }
}

module vex_unit(){
translate([unit_width/2,unit_width/2,thickness/2])difference(){
intersection(){
cube(size=[unit_width,unit_width,thickness],center=true);
rotate(45)cube(size=unit_width*6/5,center=true);
}
cube(size=[unit_width/3,unit_width/3,1.1*thickness],center=true);
}
}
```


[User]
I need a set of parametric OpenSCAD files for creating stackable card trays and lids, similar to the code I've been working on but more modular. I'm envisioning a system where the trays can interlock both horizontally and vertically for stacking.

Here's a breakdown of what I'm looking for:

**Core Requirements:**

1.  **Card Dimensions:** The system should be completely parametric in terms of card width, card height, and card thickness. I need to be able to adjust these for different card games. Please use `cardWidth`, `cardHeight`, and `cardThickness` parameters respectively.
2.  **Sleeve Consideration:**  The design needs to account for card sleeves. Please use `sleeveWidthBuffer`, `sleeveHeightBuffer`, and `sleeveThicknessBuffer` to define parameters for space to add around card dimensions to accommodate sleeves.
3. **Base Thickness:** The thickness of the base should also be configurable using a `baseThickness` parameter.
4.  **Perimeter Walls:** The height and thickness of the walls around the cards needs to be parametrically adjustable, using `wallHeight` and `wallThickness` parameters.
5. **Rounded Corners:** The base of the tray should have rounded corners, parametrically defined via a `filletSize` parameter.
6. **Finger Access:**  There needs to be a finger access cutout on each side of the tray to make card retrieval easy. The size and shape of the finger access should be configurable using `fingerAccessWidth` and `fingerAccessDepth` parameters.
7.  **Stacking:** The trays should be able to stack on top of each other. Include an interlock system to ensure trays stack securely.
8. **Stacking Interlock Clearance:** Include a parameter `interlockClearance` to allow the user to fine tune the tightness of the interlocking mechanism.
9.  **Lid Option:** A lid should be generated as a separate part, which includes a similar interlocking mechanism for secure stacking of the trays with the lid on. A user should be able to set `lidRequired` = "yes" or "no" to include or omit this lid. Use parameter `lidThickness` to define lid thickness.
10. **Top/Bottom Interlock Clearance:** Parameterize the top/bottom interlock fit via a parameter `topBottomInterlockClearance` to allow adjustment of fit.
11. **Total Cards:** Include parameter `numberOfCards` to parameterize total cards held, adjusting wall height to suit.
12. **Additional Z Space:** An additional z-space should be included and parameterized with parameter `zSpace`, to allow for irregularities in card stacking.
13. **Clearance around Cards:** A small amount of space should be added on each side of the cards, parameterized via `xySpace` (to add the same amount of space in both x and y dimensions).
14. **Lid Locking:** A `lidLocking` option, set to "yes" or "no", should be used to enable or disable the lid interlocking mechanism.

**Modular Structure:**

I'm thinking a modular structure would be best, ideally with separate files or modules for:
*   `base.scad`: defines the base tray with card space, finger access, and bottom fillets.
*   `walls.scad`: defines the perimeter walls.
*   `stacking.scad`: defines the horizontal and vertical interlock system.
*   `lid.scad`: defines the lid (if requested).
*   `main.scad`: ties everything together, instantiating tray and lid if requested

**Libraries**
I'd like you to use the BOSL2 library to create the fillets.

I'm not looking for anything too fancy, just a good, robust, parametric design that I can easily adjust for different card games. I'm hoping this request is detailed enough. Let me know if you need any more clarification.

[Assistant]
ICT.scad:
```
/*
cardSizes

TicketToRide
    43.44 x 67.51 x 0.25

Dominion
    58.95 x 90.83 x 0.3

Catan
    54.2 x 80.2 x 0.3

Power Grid Money
    45 x  90 x 0.1

Power Grid Plants
    70 x 70 x 0.25
*/

//item = "tray"; // [tray,lid,divider]
// if using sleeves, this will be the sleeve width
cardWidth = 40;
// if using sleeves, this will be the sleeve height
cardHeight = 40;
// if using sleeves, this is the total width of a card in a sleeve
totalCardDepth = 0.25;
// additional space around the card, 2 is 1mm at each end
xySpace = 2;
// additional space at the top of the set of cards (it's no fun if they want to fall out all the time). Cards also have imperfections and don't stack perfectly so we'll add a little extra space here.
zSpace = 2.5;
// totalCards to hold
numberOfCards = 10;
// outer edge at the bottom
baseEdgeThickness = 7;
// size of rounded corners at the bottom
filletSize=8;
// this can be tailored based on your printer. A figure of zero essentially means that the points at the end of the interlocking system should exactly touch, so we need to push them together to create a lock. A more accurate printer should permit this figure to get close to the precise figure of -2.
interlockClearance = -1.2;
// another locking clearance parameter, this time for the top/bottom interlock. a typical feature of 3D printing is that the bottom layer is a touch larger than the rest in order to create good bed adhesion, in this case, removing a small sliver from the locking mechanism helps top/bottom stacking to happen cleanly without giving rise to bending trays. You'll tailor this based on your experience with your own printer.
topBottomInterlockClearance = 0.7;
// to allow only a lid to be printed
lidOnly = "no"; //[yes,no]
lockingLid = "yes"; // [yes, no]

module basePlate() {
    // start with the easy stuff
    // the bottom layer contains enough space for the card, the perimeter walls at 2mm and the extra breathing space configured
    cube ([cardWidth+4+xySpace, cardHeight+4+xySpace, 2], center=true);
}

module cutOut() {

    cube ([cardWidth-baseEdgeThickness*2, cardHeight-baseEdgeThickness*2, 2.1], center=true);
}

module cutOutFillets() {
    translate ([cardWidth/2-baseEdgeThickness-filletSize/2,cardHeight/2-baseEdgeThickness-filletSize/2,0]) rotate([0,0,180]) fillet(filletSize,2);
    translate ([-(cardWidth/2-baseEdgeThickness-filletSize/2),cardHeight/2-baseEdgeThickness-filletSize/2,0]) rotate([0,0,-90]) fillet(filletSize,2);
    translate ([-(cardWidth/2-baseEdgeThickness-filletSize/2),-(cardHeight/2-baseEdgeThickness-filletSize/2),0]) rotate([0,0,0]) fillet(filletSize,2);
    translate ([cardWidth/2-baseEdgeThickness-filletSize/2,-(cardHeight/2-baseEdgeThickness-filletSize/2),0]) rotate([0,0,90]) fillet(filletSize,2);
}

module fingerAccess() {
    fingerAccessX = (cardWidth+xySpace+2)/2-1;
    fingerAccessY = (cardHeight+xySpace+2)/2-1;
    translate([0,fingerAccessY,0])
    cube([28,4.01,3],center=true);
    translate([0,-fingerAccessY,0])
    cube([28,4.01,3],center=true);
    translate([fingerAccessX,0,0])
    cube([4.01,28,3],center=true);
    translate([-fingerAccessX,0,0])
    cube([4.01,28,3],center=true);
}

module fingerAccessFillets() {
    fingerAccessX = (cardWidth+xySpace+2)/2-2;
    fingerAccessY = (cardHeight+xySpace+2)/2-2;
    translate([-13,fingerAccessY,0])
    fillet(2,2);
    translate([13,fingerAccessY,0])
    rotate([0,0,90])
    fillet(2,2);
    translate([-13,-fingerAccessY,0])
    rotate([0,0,-90])
    fillet(2,2);
    translate([13,-fingerAccessY,0])
    rotate([0,0,180])
    fillet(2,2);
    translate([fingerAccessX,13,0])
    rotate([0,0,-90])
    fillet(2,2);
    translate([fingerAccessX,-13,0])
    rotate([0,0,0])
    fillet(2,2);
    translate([-fingerAccessX,13,0])
    rotate([0,0,180])
    fillet(2,2);
    translate([-fingerAccessX,-13,0])
    rotate([0,0,90])
    fillet(2,2);

}

module edgeWalls() {
    // our edge walls will be 2mm thick; the same as the base
    // we'll need the to be high enough for the stack of cards we want to contain
    // rather than build many separate walls, we'll create a large cube, cutout the center, then cut out the holes in the edges
    translate([0,0,(totalCardDepth*numberOfCards+zSpace)/2])
    difference() {
        // main block
        cube ([cardWidth+4+xySpace, cardHeight+4+xySpace, totalCardDepth*numberOfCards+zSpace], center=true);
        // remove center
        cube ([cardWidth+xySpace, cardHeight+xySpace, totalCardDepth*numberOfCards+zSpace+0.1], center=true);
        // remove centers
        cube([28,cardHeight*2,totalCardDepth*numberOfCards+zSpace+0.1], center=true);
        // remove centers
        cube([cardWidth*2,28,totalCardDepth*numberOfCards+zSpace+0.1], center=true);
        // and lets round those corners to prevent bleeding fingers and nuckles
    }
}

module edgeFillets() {
    filletX = (cardWidth+xySpace+2)/2;
    filletY = (cardHeight+xySpace+2)/2;
    translate([filletX,16,totalCardDepth*numberOfCards+zSpace-2])
        rotate([0,90,0])
        fillet(4,3);

    translate([-filletX,16,totalCardDepth*numberOfCards+zSpace-2])
        rotate([0,90,0])
        fillet(4,3);
    translate([-filletX,-16,totalCardDepth*numberOfCards+zSpace-2])
        rotate([0,90,180])
        fillet(4,3);
    translate([filletX,-16,totalCardDepth*numberOfCards+zSpace-2])
        rotate([0,90,180])
        fillet(4,3);
    translate([-16,filletY,totalCardDepth*numberOfCards+zSpace-2])
        rotate([0,90,90])
        fillet(4,3);
    translate([16,filletY,totalCardDepth*numberOfCards+zSpace-2])
        rotate([0,90,-90])
        fillet(4,3);
    translate([-16,-filletY,totalCardDepth*numberOfCards+zSpace-2])
        rotate([0,90,90])
        fillet(4,3);
    translate([16,-filletY,totalCardDepth*numberOfCards+zSpace-2])
        rotate([0,90,-90])
        fillet(4,3);

}

module lockingPerimeter() {
    translate([0,0,(totalCardDepth*numberOfCards+zSpace)/2+2])
    difference() {
        // main block
                                                                                cube ([cardWidth+8+xySpace, cardHeight+8+xySpace, totalCardDepth*numberOfCards+zSpace+1], center=true);
        // remove center
        cube ([cardWidth+4+xySpace, cardHeight+4+xySpace, totalCardDepth*numberOfCards+zSpace+1.1], center=true);
        // remove centers
        cube([28,cardHeight*2,totalCardDepth*numberOfCards+zSpace+1.1], center=true);
        // remove centers
        cube([cardWidth*2,28,totalCardDepth*numberOfCards+zSpace+1.1], center=true);
        // and lets round those corners to prevent bleeding fingers and nuckles
    }
}

module lock(length,rX,rY,rZ,bcR) {
    translate([0,0,(totalCardDepth*numberOfCards+zSpace+1.1)/2])
    difference() {
        rotate([rX,rY,rZ])
        difference() {
                cube([2,length-interlockClearance,totalCardDepth*numberOfCards+zSpace+1.1],center=true);
                translate([0,(length-interlockClearance)/2,0])
                rotate([0,0,45])
                cube([2,length-interlockClearance,totalCardDepth*numberOfCards+zSpace+1.2],center=true);
        };
        translate([0,0,-(totalCardDepth*numberOfCards+zSpace+1.1)/2])
        rotate([rX,rY,rZ])
        rotate([0,bcR,0])
        cube([2,length+0.1-interlockClearance,totalCardDepth*numberOfCards+zSpace+1.2],center=true);
    }
}

module lockingPerimeter2() {
    translate([(cardWidth+4+2+xySpace)/2,(sideLength/2-14)/4-sideLength/2-interlockClearance/2,1.5])
        lock((sideLength/2-14)/2,0,180,0,45);
    translate([(cardWidth+4+2+xySpace)/2,-((sideLength/2-14)/4-sideLength/2-interlockClearance/2),1.5])
        lock((sideLength/2-14)/2,180,180,0,-45);
    translate([-(cardWidth+4+2+xySpace)/2,(sideLength/2-14)/4+14-interlockClearance/2,1.5])
        lock((sideLength/2-14)/2,0,0,0,-45);
    translate([-(cardWidth+4+2+xySpace)/2,-((sideLength/2-14)/4+14-interlockClearance/2),1.5])
        lock((sideLength/2-14)/2,180,0,0,45);

    translate([-((endLength/2-14)/4-endLength/2-interlockClearance/2),(cardHeight+4+2+xySpace)/2,1.5])
        lock((endLength/2-14)/2,0,180,90,45);
    translate([((endLength/2-14)/4-endLength/2-interlockClearance/2),(cardHeight+4+2+xySpace)/2,1.5])
        lock((endLength/2-14)/2,0,0,270,-45);
    translate([-((endLength/2-14)/4+14-interlockClearance/2),-(cardHeight+4+2+xySpace)/2,1.5])
        lock((endLength/2-14)/2,0,0,90,-45);
    translate([((endLength/2-14)/4+14-interlockClearance/2),-(cardHeight+4+2+xySpace)/2,1.5])
        lock((endLength/2-14)/2,0,180,270,45);
}

module lockingLidPerimeter() {
    translate([(cardWidth+4+2+xySpace)/2,(sideLength/2-14)/4-sideLength/2-interlockClearance/2,1-(totalCardDepth*numberOfCards+zSpace+1.1)])
        lock((sideLength/2-14)/2,0,0,0,45);
    translate([(cardWidth+4+2+xySpace)/2,-((sideLength/2-14)/4-sideLength/2-interlockClearance/2),1-(totalCardDepth*numberOfCards+zSpace+1.1)])
        lock((sideLength/2-14)/2,180,0,0,-45);
    translate([-(cardWidth+4+2+xySpace)/2,(sideLength/2-14)/4+14-interlockClearance/2,1-(totalCardDepth*numberOfCards+zSpace+1.1)])
        lock((sideLength/2-14)/2,0,180,0,-45);
    translate([-(cardWidth+4+2+xySpace)/2,-((sideLength/2-14)/4+14-interlockClearance/2),1-(totalCardDepth*numberOfCards+zSpace+1.1)])
        lock((sideLength/2-14)/2,180,180,0,45);

    translate([-((endLength/2-14)/4-endLength/2-interlockClearance/2),(cardHeight+4+2+xySpace)/2,1-(totalCardDepth*numberOfCards+zSpace+1.1)])
        lock((endLength/2-14)/2,0,0,90,45);
    translate([((endLength/2-14)/4-endLength/2-interlockClearance/2),(cardHeight+4+2+xySpace)/2,1-(totalCardDepth*numberOfCards+zSpace+1.1)])
        lock((endLength/2-14)/2,0,180,270,-45);
    translate([-((endLength/2-14)/4+14-interlockClearance/2),-(cardHeight+4+2+xySpace)/2,1-(totalCardDepth*numberOfCards+zSpace+1.1)])
        lock((endLength/2-14)/2,0,180,90,-45);
    translate([((endLength/2-14)/4+14-interlockClearance/2),-(cardHeight+4+2+xySpace)/2,1-(totalCardDepth*numberOfCards+zSpace+1.1)])
        lock((endLength/2-14)/2,0,0,270,45);
}

module perimeterFillets () {
    translate([-14-2,-(cardHeight+4+2+xySpace)/2,totalCardDepth*numberOfCards+zSpace+1-0.4])
    rotate([0,90,90])
    fillet(4,3);
    translate([-(-14-2),-(cardHeight+4+2+xySpace)/2,totalCardDepth*numberOfCards+zSpace+1-0.4])
    rotate([0,90,-90])
    fillet(4,3);
    translate([-(cardWidth+4+2+xySpace)/2,-(-14-2),totalCardDepth*numberOfCards+zSpace+1-0.4])
    rotate([0,90,0])
    fillet(4,3);
    translate([-(cardWidth+4+2+xySpace)/2,(-14-2),totalCardDepth*numberOfCards+zSpace+1-0.4])
    rotate([0,90,180])
    fillet(4,3);

}

module fillet(r, h) {
    $fn = 60;
    difference() {
        cube([r + 0.01, r + 0.01, h], center = true);

        translate([r/2, r/2, 0])
            cylinder(r = r, h = h + 1, center = true);

    }
}

module topBottomLockAssist() {
    translate([0,0,2+totalCardDepth*numberOfCards+zSpace])
    cube ([cardWidth+4+xySpace+topBottomInterlockClearance, cardHeight+4+xySpace+topBottomInterlockClearance, 2], center=true);
}
module lockingLidLockAssist() {
    translate([0,0,-5001])
    cube ([cardWidth+4+xySpace+topBottomInterlockClearance, cardHeight+4+xySpace+topBottomInterlockClearance, 10000], center=true);
}

sideLength = cardHeight+xySpace+4;
endLength = cardWidth+xySpace+4;

union() {
    difference() {
        // 1. to make the base we'll make a rectangle
        basePlate();
        // 2. and cut out the center and finger access points
        cutOut();
        fingerAccess();
    }
    // 3. then add the fillets()
    cutOutFillets();
    fingerAccessFillets();
    if (lidOnly=="no") {
        // 4. With the base built, we can add the walls
        translate([0,0,1])
        difference() {
            edgeWalls();
            edgeFillets();
        }
        // 5. Now we'll add the inter-locking system
        difference () {
            lockingPerimeter2();
            perimeterFillets();
            topBottomLockAssist();
        }
    } else if (lockingLid=="yes") {
        // 6. Add the top locking perimeter
        rotate([180,0,0])
        difference() {
            lockingLidPerimeter();
            lockingLidLockAssist();
        }
    }
}
```


[User]
Hey, I'm looking to create a customizable clip for wire shelving racks, you know, the kind with the big wires forming the shelf edges. I have a basic design already that I can show you, but I want you to make it parametric so I can adjust it to different shelves, and also add some attachment points to it for mounting other things. I'm thinking things like GoPro mounts, hooks, whatever.

Okay, so the basic clip shape is sort of like a 'C' that wraps around the edge of the wire shelf. It's made by subtracting some shapes from a cube to form the "C", creating a lip that grips the wire. There's also a small notch at the bottom of the "C" to allow it to flex a little when you clip it on, so it doesn't break. I'd like to keep that.

I've already got a few variables defined in the example I have:

*   `lipWidth`: The distance between the outer edges of the two large wires of the shelf edge.
*   `wireWidth`: The diameter of those wires.
*   `doFlexNotch`: A boolean to control if the notch is added.
*   `width`: The overall width of the clip (how far it sticks out from the wires).

I'd like you to use these parameters and add these to the design:

*   `attachmentType`: This would be a string defining the type of attachment to add, like 'none', 'gopro', 'hook', 'screw', etc.
*   `attachmentSize`: This would be a numerical variable relating to the size of the specific attachment, like a diameter for a hook, or thread size for a screw mount.
*   `attachmentOffset`: A numerical variable to set the horizontal offset of the attachment point along the "width" dimension, i.e., how far out it is located from the lip.
*   `attachmentDepth`: The depth of the attachment (a cylinder to create the hook for example).

I also want to be able to control the position of the flex notch, so please replace the `doFlexNotch` boolean with a `flexNotchPosition` variable with options like `none`, `top`, or `bottom`.

For attachment types, if `attachmentType` is set to 'gopro', the design should incorporate a standard GoPro style mounting interface: a base with two parallel rectangular prisms with a gap between them, and a hole. If `attachmentType` is set to 'hook', it should create a simple cylindrical hook extending out. If set to 'screw', it should add a cylindrical inset with an appropriate diameter and depth for the screw thread, but not a thread pattern. The depth of each of the attachment points should also be controlled by the `attachmentDepth` variable. If set to 'none', no attachments should be added.

Could you also incorporate using the BOSL2 library to use the `cube()` and `cylinder()` modules rather than the built-in ones for more control later?

I need this to be fully parametric, so I can change all of these variables in order to mount various different items onto different wire shelves. I need one main file containing the clip and the other shapes needed to make it work.

[Assistant]
clip.scad:
```
// Distance between the outer edges of the two large wires that make up the lip
lipWidth=34.25;
// Diameter of the large wires that make up the lip
wireWidth=6.5;
// Add a notch in the clip so it has flex and doesn't break while putting it on
doFlexNotch=true;
//the width of the clip accross
width=30;
//not used yet
//wireSpacing=16.9;
//smallWireWidth=3.5;

module clip(_lip_width, _wire_radius, _do_flex_notch, _width, _wire_spacing, _small_wire_width) {
    difference() {
        cube([_wire_radius*4, _lip_width+(2*_wire_radius), _width]);
        translate([_wire_radius, _wire_radius*2, 0]) cube([_wire_radius*3, _lip_width-(2*_wire_radius), _width]);
        translate([_wire_radius*2, _wire_radius*2, 0]) cylinder(r=_wire_radius, h=_width, $fn=100);
        translate([_wire_radius*2,_lip_width, 0]) cylinder(r=_wire_radius, h=_width, $fn=100);
        if(_do_flex_notch) {
                translate([_wire_radius*2, _wire_radius*.9, 0]) cylinder(r=_wire_radius*0.3, h=_width, $fn = 100);
        }
        //comming soon
        if(_wire_spacing < _wire_radius) {
        }
    }
}
clip(lipWidth, wireWidth/2, doFlexNotch, width, wireSpacing, smallWireWidth);
```


[User]
I need some help designing an OpenSCAD model for a headphone hanger. I want to be able to hang my headphones off of a wire rack, and I need a clip that can attach to the rack and a hook to hold the headphones. I have a model I made, but I think an AI can create a better one.

The wire rack has a lip made of two large wires. I want the clip to fit around these wires, and I want a notch in the clip to give it some flex so it doesn't break when I put it on the rack. I measured the distance between the outer edges of the two large wires as 34.25mm, and the diameter of the wires is 6.5mm. The width of the clip should be 30mm.

For the headphone hook, I want it to extend out from the clip, perpendicular to the direction the clip attaches to the wire rack. The hook should be a half-cylinder with a radius of half the clip's width (15mm), and it should be 40mm wide. I also want a small lip on the end of the hook to prevent the headphones from sliding off. This lip should be 3mm thick and extend the full width of the hook.

Here's a rough breakdown of the design I have in mind:

**Clip:**

*   Rectangular base with dimensions: 6.5mm \* 4 \* (34.25mm + 2 \* 6.5mm) \* 30mm.
*   A rectangular cutout to accommodate the wires: 6.5mm \* 3 \* (34.25mm - 2 \* 6.5mm) \* 30mm, offset from the edge by 6.5mm.
*   Two cylindrical cutouts for the wires, each with a radius of 6.5mm/2 and a height of 30mm, one at each end of the rectangular cutout.
*   A small cylindrical notch for flex, with a radius of (6.5mm/2) \* 0.3 and a height of 30mm, centered on the outer edge of the clip.

**Headphone Hook:**

*   A half-cylinder with a radius of 30mm/2 and a height of 40mm, rotated 90 degrees around the Y-axis.
*   A small cylindrical lip at the end of the hook with a radius of 30mm/2 + 3mm and a height of 3mm, also rotated 90 degrees around the Y-axis.
*   The hook should be cut to fit against the clip, and two small rectangular cutouts should be added to the lip to prevent it from interfering with the clip's attachment to the wire rack.

I'd like the OpenSCAD file to be parametric, so I can easily adjust these dimensions if needed. Let me know if you need any more information. Please do not use the `MCAD`, `BOSL`, `BOSL2`, `dotSCAD`, `NopSCADlib`, or `BOLTS` libraries.

[Assistant]
headphone_non_modular.scad:
```
// the width of the headband, how for out the hook will extend past the clip
headband_width = 40;
// Distance between the outer edges of the two large wires that make up the lip
lipWidth=34.25;
// Diameter of the large wires that make up the lip
wireWidth=6.5;
// Add a notch in the clip so it has flex and doesn't break while putting it on
doFlexNotch=true;
//the width of the clip accross
width=30;
//not used yet
//wireSpacing=16.9;
//smallWireWidth=3.5;

module clip(_lip_width, _wire_radius, _do_flex_notch, _width, _wire_spacing, _small_wire_width) {
    difference() {
        cube([_wire_radius*4, _lip_width+(2*_wire_radius), _width]);
        translate([_wire_radius, _wire_radius*2, 0]) cube([_wire_radius*3, _lip_width-(2*_wire_radius), _width]);
        translate([_wire_radius*2, _wire_radius*2, 0]) cylinder(r=_wire_radius, h=_width, $fn=100);
        translate([_wire_radius*2,_lip_width, 0]) cylinder(r=_wire_radius, h=_width, $fn=100);
        if(_do_flex_notch) {
                translate([_wire_radius*2, _wire_radius*.9, 0]) cylinder(r=_wire_radius*0.3, h=_width, $fn = 100);
        }
        //comming soon
        if(_wire_spacing < _wire_radius) {
        }
    }
}
clip(lipWidth, wireWidth/2, doFlexNotch, width, wireSpacing, smallWireWidth);
//include <clip.scad>;
module headphonehook(_head_band_width, _width) {
    _lip_edge=3;
    difference() {
        union() {
            translate([-1*_head_band_width,0,_width/2]) rotate([0,90,0]) cylinder(r=_width/2, h=_head_band_width);
            translate([-1*_head_band_width,0,_width/2]) rotate([0,90,0]) cylinder(r=_width/2+_lip_edge, h=_lip_edge);
        }
        translate([-1*_head_band_width, -1*_width/2-_lip_edge, -1*_lip_edge]) cube([_head_band_width,_width/2 + _lip_edge, _width + _lip_edge*2]);
        translate([-_head_band_width, 0, -_lip_edge]) cube([_lip_edge+0.00001, _lip_edge*10, _lip_edge]);
        translate([-_head_band_width, 0, _width]) cube([_lip_edge+0.00001, _lip_edge*10, _lip_edge]);
    }
}
headphonehook(headband_width, width);
```


[User]
Alright, I need some help designing a parametric washer or bushing, something really simple. I want to be able to specify the thickness, the inner diameter, and the outer diameter, and have it generate the 3D model. I'd also like to be able to control the resolution of the curves with a variable.

Can you give me an OpenSCAD file or files that handles this? I'm not using any specific libraries for this one, I just want a very basic, self-contained thing.

[Assistant]
washers.scad:
```
thick = 2;
innerdia=3.5;
outerdia=6.25;
res=60;

difference(){
    cylinder(thick, d=outerdia, $fn=res);
    cylinder(thick, d=innerdia, $fn=res);
}
```


[User]
I want to create a customizable maze generator that produces mazes based on regular polygons instead of the typical square grid. I have a starting point in the form of an existing OpenSCAD file, `random_maze_regular_polygon_generator.scad`, which I'm including here as a reference. I want to be able to specify the radius of the overall shape, the wall thickness and height, the number of "cblocks" (which I understand to be sectors), the number of levels, and the number of sides of the polygon. I also want to be able to choose whether or not to include a solid bottom to the maze.

I'd like the code to be parametric so that I can easily adjust these values. I want the output to be a 3D printable maze. Please generate all necessary OpenSCAD files, but please do not rely on any external libraries. I've included `random_maze_regular_polygon_generator.scad` as a starting point, but I would like a fresh implementation from scratch.

[Assistant]
random_maze_regular_polygon_generator.scad:
```
radius_of_circle_wrapper = 15;
wall_thickness = 1;
wall_height = 1;
cblocks = 12;
levels = 3;
sides = 8; // [3:24]
bottom = "NO"; // [YES,NO]

// give a [x, y] point and length. draw a line in the x direction
module x_line(point, length, thickness = 1) {
    offset = thickness / 2;
    translate([point[0] - offset, point[1] - offset, 0])
        square([length + thickness, thickness]);
}

/*
 * constants, for clearness
 *
 */

// random directions, for picking up a direction to visit the next block
function PERMUTATION_OF_FOUR() = [
    [1, 2, 3, 4],
    [1, 2, 4, 3],
    [1, 3, 2, 4],
    [1, 3, 4, 2],
    [1, 4, 2, 3],
    [1, 4, 3, 2],
    [2, 1, 3, 4],
    [2, 1, 4, 3],
    [2, 3, 1, 4],
    [2, 3, 4, 1],
    [2, 4, 1, 3],
    [2, 4, 3, 1],
    [3, 1, 2, 4],
    [3, 1, 4, 2],
    [3, 2, 1, 4],
    [3, 2, 4, 1],
    [3, 4, 1, 2],
    [3, 4, 2, 1],
    [4, 1, 2, 3],
    [4, 1, 3, 2],
    [4, 2, 1, 3],
    [4, 2, 3, 1],
    [4, 3, 1, 2],
    [4, 3, 2, 1]
];

function NO_WALL() = 0;
function UP_WALL() = 1;
function RIGHT_WALL() = 2;
function UP_RIGHT_WALL() = 3;

function NOT_VISITED() = 0;
function VISITED() = 1;

/*
 * modules for creating a maze
 *
 */

// create the outer wall of maze
module maze_outer_wall(rows, columns, block_width = 5, wall_thickness = 1) {
    x_line([0, rows * block_width], columns * block_width, wall_thickness);
    y_line([0, block_width], (rows - 1) * block_width, wall_thickness);
}

// create the inner wall of maze
module maze_inner_wall(maze, block_width = 5, wall_thickness = 1) {
    for(i = [0:len(maze) - 1]) {
        cord = maze[i];
        x = (cord[0] - 1) * block_width;
        y = (cord[1] - 1) * block_width;
        v = cord[3];

        if(v == 1 || v == 3) {
            x_line([x, y], block_width, wall_thickness);
        }
        if(v == 2 || v == 3) {
            y_line([x + block_width, y], block_width, wall_thickness);
        }
    }
}

// create a maze
module maze(rows, columns, maze_vector, block_width = 5, wall_thickness = 1) {
     maze_outer_wall(rows, columns, block_width, wall_thickness);
     maze_inner_wall(maze_vector, block_width, wall_thickness);
}

/*
 * utilities functions
 *
 */

// comare the equality of [x1, y1] and [x2, y2]
function cord_equals(cord1, cord2) = cord1 == cord2;

// is the point visited?
function not_visited(cord, vs, index = 0) =
    index == len(vs) ? true :
        (cord_equals([vs[index][0], vs[index][1]], cord) && vs[index][2] == 1 ? false :
            not_visited(cord, vs, index + 1));

// pick a direction randomly
function rand_dirs() =
    PERMUTATION_OF_FOUR()[round(rands(0, 24, 1)[0])];

// replace v1 in the vector with v2
function replace(v1, v2, vs) =
    [for(i = [0:len(vs) - 1]) vs[i] == v1 ? v2 : vs[i]];

/*
 * functions for generating a maze vector
 *
 */

// initialize a maze
function init_maze(rows, columns) =
    [
	    for(c = [1 : columns])
	        for(r = [1 : rows])
		        [c, r, 0,  UP_RIGHT_WALL()]
	];

// find a vector in the maze vector
function find(i, j, maze_vector, index = 0) =
    index == len(maze_vector) ? [] : (
        cord_equals([i, j], [maze_vector[index][0], maze_vector[index][1]]) ? maze_vector[index] : find(i, j, maze_vector, index + 1)
    );

////
// NO_WALL = 0;
// UP_WALL = 1;
// RIGHT_WALL = 2;
// UP_RIGHT_WALL = 3;
function delete_right_wall(original_block) =
    original_block == NO_WALL() || original_block == RIGHT_WALL() ? NO_WALL() : UP_WALL();

function delete_up_wall(original_block) =
    (original_block == NO_WALL() || original_block == UP_WALL()) ? NO_WALL() : RIGHT_WALL();

function delete_right_wall_of(vs, is_visited, maze_vector) =
    replace(vs, [vs[0], vs[1] , is_visited, delete_right_wall(vs[3])] ,maze_vector);

function delete_up_wall_of(vs, is_visited, maze_vector) =
    replace(vs, [vs[0], vs[1] , is_visited, delete_up_wall(vs[3])] ,maze_vector);

function go_right(i, j, rows, columns, maze_vector) =
    go_maze(i + 1, j, rows, columns, delete_right_wall_of(find(i, j, maze_vector), VISITED(), maze_vector));

function go_up(i, j, rows, columns, maze_vector) =
    go_maze(i, j - 1, rows, columns, delete_up_wall_of(find(i, j, maze_vector), VISITED(), maze_vector));

function visit(v, maze_vector) =
    replace(v, [v[0], v[1], VISITED(), v[3]], maze_vector);

function go_left(i, j, rows, columns, maze_vector) =
    go_maze(i - 1, j, rows, columns, delete_right_wall_of(find(i - 1, j, maze_vector), NOT_VISITED(), maze_vector));

function go_down(i, j, rows, columns, maze_vector) =
    go_maze(i, j + 1, rows, columns, delete_up_wall_of(find(i, j + 1, maze_vector), NOT_VISITED(), maze_vector));

function go_maze(i, j, rows, columns, maze_vector) =
    look_around(i, j, rand_dirs(), rows, columns, visit(find(i, j, maze_vector), maze_vector));

function look_around(i, j, dirs, rows, columns, maze_vector, index = 0) =
    index == 4 ? maze_vector :
        look_around(
            i, j, dirs,
            rows, columns,
            build_wall(i, j, dirs[index], rows, columns, maze_vector),
            index + 1
        );

function build_wall(i, j, n, rows, columns, maze_vector) =
    n == 1 && i != columns && not_visited([i + 1, j], maze_vector) ? go_right(i, j, rows, columns, maze_vector) : (
        n == 2 && j != 1 && not_visited([i, j - 1], maze_vector) ? go_up(i, j, rows, columns, maze_vector)  : (
            n == 3 && i != 1 && not_visited([i - 1, j], maze_vector) ? go_left(i, j,rows, columns,  maze_vector)  : (
                n == 4 && j != rows && not_visited([i, j + 1], maze_vector) ? go_down(i, j, rows, columns, maze_vector) : maze_vector
            )
        )
    );

module ring_regular_polygon(radius, thickness, sides) {
    difference() {
	    offset(delta = thickness) circle(radius, $fn = sides);
        circle(radius, $fn = sides);
	}
}

module ring_regular_polygon_sector(radius, angle, thickness, width, sides) {
	intersection() {
		ring_regular_polygon(radius - 0.1, thickness + 0.2, sides);
		rotate([0, 0, angle]) x_line([0, 0], radius * 3, width);
	}
}

module regular_polygon_to_polygon_wall(radius, length, angle, thickness, sides) {
    intersection() {
        difference() {
		    circle(radius + length, $fn = sides);
			circle(radius, $fn = sides);
	    }
	    rotate([0, 0, angle])
		    x_line([0, 0], (radius + length) * 2, thickness);
	}
}

module regular_polygon_maze(radius, cblocks, levels, thickness = 1, sides) {
    full_circle_angle = 360;
    arc_angle = full_circle_angle / cblocks;
	r = radius / (levels + 1);

	maze = go_maze(1, 1, cblocks, levels, replace([levels, cblocks - 1, 0, UP_RIGHT_WALL()], [levels, cblocks - 1, 0, UP_WALL()], init_maze(cblocks, levels)));

	difference() {
		 union() {
			for(i = [1 : levels + 1]) {
			    ring_regular_polygon(r * i, thickness, sides);
			}

			for(i = [0:len(maze) - 1]) {
				cord = maze[i];
				cr = cord[0];
				cc = cord[1] - 1;
				v = cord[3];

				angle = cc * arc_angle;

				if(v == 1 || v == 3) {
				    regular_polygon_to_polygon_wall(r * cr, r, cc * arc_angle , thickness, sides);
				}
			}
	    }

		 union() {
		    // maze entry
			ring_regular_polygon_sector(r, arc_angle / 1.975 , thickness, r / 3, sides);

	        // road to the next level
			for(i = [0:len(maze) - 1]) {
				cord = maze[i];
				cr = cord[0];
				cc = cord[1] - 1;
				v = cord[3];

				if(v == 0 || v == 1) {

				    ring_regular_polygon_sector(r * (cr + 1), (cc + 0.5) * arc_angle , thickness, r / 3 , sides);
				}
			}
		}
	}
}

linear_extrude(wall_height)
    regular_polygon_maze(radius_of_circle_wrapper, cblocks, levels, wall_thickness, sides);

if(bottom == "YES") {
    linear_extrude(wall_height / 2)
        offset(delta = wall_thickness)
	        circle(radius_of_circle_wrapper, $fn = sides);
}

```


[User]
Okay, I'm looking to create a parametric foot for an aluminum extrusion frame, something like the part I've seen used on the FirePick pick and place machine. The basic idea is a block with rounded edges, a central hole for a screw, and four 'knobs' that fit into the t-slots of the extrusion.

Here's the specific functionality I need, with parameters I'd like to control:

*   **Overall Dimensions:**
    *   `width`: The width and length of the foot (it should be square, so same dimension).
    *   `height`: The height of the foot from the bottom of the extrusion to the ground, not including the t-slot inserts.
    *   `corner`: The radius for rounding the sides and bottom edges of the foot.

*   **T-Slot Inserts (Knobs):**
    *   `insertsHeight`: How deep the inserts go into the extrusion's t-slot.
    *   `insertWidth`: The width of the insert (along the edge of the foot).
    *   `insertDepth`: The depth of the insert (perpendicular to the edge of the foot).

*   **Screw Hole:**
    *   `screwHole`: The radius of the clearance hole for the screw's threads.
    *   `screwHead`: The radius of the clearance hole for the screw head.
    *   `screwHeadRecess`: How deep the screw head is countersunk into the foot.
    *   `screwIsFlat`: A boolean flag (true/false) indicating whether a flat head screw is being used. If `true` a countersink should be made for the head. If `false`, then the recess should remain flat.

*   **Additional features:**
    *   `cutView`: A boolean flag (true/false) that would create a cutaway section for visualizing the screw and inserts. It doesn't need to be included in the final model unless explicitly set to `true`.

The final model will be a single part, and I expect that it will use hulling to generate the rounded edges. No special libraries are needed for this design, just vanilla OpenSCAD. I'd also like to use `$fn = 100;` for smooth circles and rounded edges.

Essentially, I need a script where I can adjust all those dimensions and have a usable extrusion foot. Thank you.

[Assistant]
rubber-foot.scad:
```
// This is a parametric version for the extrusion foot
// the following parameter for for a 2020 profile with a somewhat beefy flat head screw.

// This is a square design since most profiles are square (unless they are not) so the width is also the length
width = 20;

// height is the height of the foot without the 4 knobs that grip into the t-slots. So height is the distance between end of aluminium profile and table.
height = 15;

// the insert are those 4 knobs that grip into the t-slots of the profile. Insert height is how deep it will grip into the profile.
insertsHeight = 2;

// Inster width is the distance of the inserts along the edge of the foot
insertWidth = 5.5;

// Insert Depth is the other corner of the insert.
insertDepth = 5.5;

// Screw hole is the clearance radius if the threat part of the screw
screwHole = 3;

// Screw head is the clearance radius of the head of the screw, in this design i'm assuming you use a flat head screw.
screwHead = 5.5;

// screw head recess is how deep the screw will be hidden in the bottom of the foot.
screwHeadRecess = 4;

// set this to true if the screws has a flat head, Set this to false for pan head and other screw types that expect a level base
screwIsFlat = true;

// Cut view lets you cut the foot in halt to check the profile of the screw
cutView = false;

// Corner is the rounding radius sides an bottom of the foot
corner = 2;

$fn = 100;

torso(width, height, insertsHeight, insertWidth, insertDepth, screwHole, screwHead, screwHeadRecess, screwIsFlat, corner, cutView);

module torso(width, height, insertsHeight, insertWidth, insertDepth, screwHole, screwHead, screwHeadRecess, screwIsFlat, corner, cutView)
{

	difference()
	{
		union()
		{
			intersection()
			{
				hull()
				{
					translate([ (width * 0.5) - corner, (width * 0.5) - corner, corner ]) sphere(r = corner);
					translate([ -(width * 0.5) + corner, (width * 0.5) - corner, corner ]) sphere(r = corner);
					translate([ (width * 0.5) - corner, -(width * 0.5) + corner, corner ]) sphere(r = corner);
					translate([ -(width * 0.5) + corner, -(width * 0.5) + corner, corner ]) sphere(r = corner);

					translate([ (width * 0.5) - corner, (width * 0.5) - corner, height + corner ]) sphere(r = corner);
					translate([ -(width * 0.5) + corner, (width * 0.5) - corner, height + corner ]) sphere(r = corner);
					translate([ (width * 0.5) - corner, -(width * 0.5) + corner, height + corner ]) sphere(r = corner);
					translate([ -(width * 0.5) + corner, -(width * 0.5) + corner, height + corner ]) sphere(r = corner);
				}
				cube([ width, width, height * 2 ], center = true);
			}
			rotate([ 0, 0, 0 ]) insert(width, height, insertsHeight, insertWidth, insertDepth);
			rotate([ 0, 0, 90 ]) insert(width, height, insertsHeight, insertWidth, insertDepth);
			rotate([ 0, 0, 180 ]) insert(width, height, insertsHeight, insertWidth, insertDepth);
			rotate([ 0, 0, 270 ]) insert(width, height, insertsHeight, insertWidth, insertDepth);
		}
		cylinder(h = height * 2.1, r1 = screwHole, r2 = screwHole, center = true);
		cylinder(h = screwHeadRecess * 2, r1 = screwHead, r2 = screwHead, center = true);
		if(screwIsFlat)
		{
			translate([ 0, 0, screwHeadRecess - 0.05 ]) cylinder(h = screwHead * 0.5, r1 = screwHead, r2 = screwHole, center = false);
		}
		if (cutView)
		{
			translate([ 0, width * 0.5, 0]) cube([ width * 2, width, (height + insertsHeight) * 3], center = true);
		}

	}
}

module insert(width, height, insertsHeight, insertWidth, insertDepth, screwHole, screwHead)
{
	translate([ (width * 0.5) - (insertDepth * 0.5), 0, height + (insertsHeight * 0.5) ]) cube([ insertDepth, insertWidth, insertsHeight ], center = true);
}

```


[User]
I need a customizable filament spool holder designed in OpenSCAD. I've been having trouble with spools that have internal fins, and the old pin-type holders don't work, so I need a version with just a bolt hole. But I also want to retain the option to generate the pin-type holders since some of my spools work better with them.

Ideally, the design should allow me to specify the following parameters:

*   **`part`**: A dropdown or similar option that lets me choose between creating a "left" pin holder, a "right" pin holder, or just a "hole" type holder. This should ideally only produce the STL for what's selected, but if that's not possible, it should at least generate all three. I'm having trouble making it selective myself.
*   **`spoolDiam`**: The outer diameter of the spool.
*   **`SpoolCenterHoleDiam`**: The diameter of the center hole of the spool.
*   **`frameThickness`**: The thickness of the frame that mounts to the printer.
*   **`frameHeight`**: The height of the frame.
*   **`mountThickness`**: The thickness of the mounting extensions of the holder.
*   **`hookLenght`**: The length of the "hook" or support arms of the holder.
*   **`angle`**: The angle of the spool support arm relative to the mounting frame.
*   **`holderThickness`**: The overall thickness of the holder part.
*   **`pinWidth`**: The diameter of the pin or bolt hole.
*   **`pin1Height`**: The height of the first part of the pin (for pin-type holders).
*   **`pin2Height`**: The height of the second part of the pin (for pin-type holders).
*   **`pin2TopWidth`**: The width of the top of the second pin part, allowing for a conical shape to prevent the spool from falling off.

The holder should have a rounded profile where it meets the frame using the `rounding` module, and there should also be small holes for mounting using small screws, I have those in place with cylinders in the existing code.

I would also need the design to be modular, I'd like each part of the design to be generated in a different module. The main output should be in `print_part`, where it checks what part should be outputted, `spoolShape` should make the preview of the spool, the `rounding` module should make the rounding, and `holder` should make the base shape that all the holder parts are based on.

The dimensions of the mount should be properly defined, making sure the holder is strong enough, with the mount thickness and hook length giving it a good grip, and the mount extensions and height allowing to attach to a printer frame.

I'm mainly using basic OpenSCAD functions, so no specific libraries should be needed for now.

[Assistant]
spoolholder_15.3.2016.scad:
```
/*Filament spool holder By Jkk79
*/

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

// Holder type... Well, you're going to get all the types as STL's, no matter what you choose here, just ignore the ones you dont need.
part="hole"; // [left:Left side with pin, right:Right side with pin,hole:Just a hole for bolt]

//Spool diameter.
spoolDiam=200;

//Spool center hole diameter.
SpoolCenterHoleDiam=53;

//Frame thickness, 6mm default, change this if you have something else and feel adventurous.
frameThickness=6;

//Frame upper part height, 40mm default, change this if you have something else and feel adventurous.
frameHeight=40;

//Mount's thickness, I dont know how sturdy it will be below 6mm. Reduce if extruder can't fit past them at max printing heights.
mountThickness=6;//[2,3,4,5,6]

//Holder's "hook's" length.
hookLenght=6;// [1,2,3,4,5,6,7,8,9,10]

//The angle of the arm. 66 seems to work well.
angle=66; //[40:80]

//Thickness of the holder. 10mm seems to work well.
holderThickness=10;

//Diameter of the pin, or the hole. 8,5mm for 8mm bolt?
pinWidth=10;

/*[For pin type holder only]*/
//Height of the pin.
pin1Height=10;

//Height of the second part of the pin that sits on top of the first pin.
pin2Height=10;

//Width of the top of the second part of the pin, you can make it a cone shape, so the spool won't fall off even if either side fails for any reason.
pin2TopWidth=29; //29

//-----------
spoolCenterX=cos(angle)*((spoolDiam/2)+(SpoolCenterHoleDiam/2))+frameThickness; //calculates the X-coordinate.
spoolCenterY=sin(angle)*((spoolDiam/2)+(SpoolCenterHoleDiam/2))+frameHeight;    //and the Y-coordinate.

module print_part(){
    if(part=="left"){
        holder();
        translate([spoolCenterX,spoolCenterY,0])cylinder(holderThickness+pin1Height,pinWidth/2,pinWidth/2);
        translate([spoolCenterX,spoolCenterY,holderThickness+pin1Height])cylinder(pin2Height,pinWidth/2,pin2TopWidth/2);
        translate([0,0,-1])%spoolShape();
    }
    else if(part=="right"){
        mirror([1,0,0])translate([0,0,0]){
            holder();
            translate([spoolCenterX,spoolCenterY,0])cylinder(holderThickness+pin1Height,pinWidth/2,pinWidth/2);
            translate([spoolCenterX,spoolCenterY,holderThickness+pin1Height])cylinder(pin2Height,pinWidth/2,pin2TopWidth/2);
            translate([0,0,-1])%spoolShape();
        }
    }
    else if(part=="hole"){
        difference(){
            union(){
                holder();
                translate([spoolCenterX,spoolCenterY,0])cylinder(holderThickness,3+pinWidth/2,3+pinWidth/2);
            }
            translate([spoolCenterX,spoolCenterY,-1])cylinder(holderThickness+2,pinWidth/2,pinWidth/2);
        }
        translate([0,0,-1])%spoolShape();
    }
}

module spoolShape(){
    difference(){
            translate([spoolCenterX,spoolCenterY+pinWidth/2-SpoolCenterHoleDiam/2,0])cylinder(1,spoolDiam/2,spoolDiam/2);
            translate([spoolCenterX,spoolCenterY+pinWidth/2-SpoolCenterHoleDiam/2,-1])cylinder(3,SpoolCenterHoleDiam/2,SpoolCenterHoleDiam/2);
    }
}

module rounding(r,angle){
     rotate([0,0,angle]){
        difference(){
                translate([-r,-r,-1])cube([r+1,r+1,holderThickness+2]);
                translate([-r,-r,-1])cylinder(holderThickness+2,r,r,$fn=32);
        }
    }
}

module holder(){
    difference(){
        linear_extrude(height=holderThickness, convexity=10)polygon(points=[[0,0],[frameThickness,0],[frameThickness,hookLenght],[frameThickness+mountThickness,hookLenght],[frameThickness+mountThickness,-mountThickness],[-mountThickness,-mountThickness],[-mountThickness,frameHeight+mountThickness],[spoolCenterX-2,spoolCenterY+2],[spoolCenterX+2,spoolCenterY-2],[frameThickness+1,frameHeight-1],[frameThickness,frameHeight-1],[frameThickness,frameHeight],[0,frameHeight]]);
        translate([-mountThickness,-mountThickness,0])rounding(mountThickness,180);
        translate([frameThickness+mountThickness,-mountThickness,0])rounding(mountThickness,-90);
        translate([frameThickness+mountThickness,hookLenght,0])rounding(mountThickness/2,0);
        translate([frameThickness,hookLenght,0])rounding(mountThickness/2,90);
        translate([mountThickness/12,mountThickness/12,-1])cylinder(holderThickness+2,mountThickness/6,mountThickness/6,$fn=32);
        translate([frameThickness-mountThickness/12,mountThickness/12,-1])cylinder(holderThickness+2,mountThickness/6,mountThickness/6,$fn=32);
        translate([mountThickness/12,frameHeight-mountThickness/12,-1])cylinder(holderThickness+2,mountThickness/6,mountThickness/6,$fn=32);
    }
}

print_part();

```


[User]
Hey, I'm looking to create a parametric spool holder for wire racks, and I've got some specific dimensions and features in mind. It's kind of based on a design I saw on Thingiverse but it's also its own thing.

I need two main modules: one for the clip that attaches to the wire rack, and another for the spool holder itself.

**Clip Module:**

*   The clip needs to grab onto the wire rack using two rounded "jaws."
*   It should have a parameter for `lipWidth`, which is the distance between the outer edges of those jaws.
*   There needs to be a parameter for `wireWidth`, which is the diameter of the wires forming the jaws.
*   A `doFlexNotch` parameter, which is a boolean to control whether a small notch is included for flexibility.
*   A `width` parameter to control the overall width of the clip.
*   Parameters for `wireSpacing` and `smallWireWidth`. I may use these to add small support wires in the future, but for now it can ignore the `_wire_spacing < _wire_radius` conditional and just not generate anything extra when these are not the desired sizes.

**Spool Holder Module:**

*   The spool holder should have a cylindrical base that holds the spool.
*   It should have parameters for `spoolDiameter`, `spoolWidth`, and `centerDiameter` to fit different sized spools.
*   It should have a lip at the end to keep the spool from sliding off, and the lip's dimensions should be calculable based on a `_lipWidth` variable which I will manually define within the module. The lip needs to be the diameter of the center hole, and then increased by the lipwidth on the top side, so that the lip slides over the center hole when it is inserted into a spool, but rests on the edge of the center hole when fully inserted, preventing the spool from falling off.
*   There should be a cutout to allow the holder to clip onto the wire rack.
*   This cutout should also allow it to be attached at the top of the cylindrical base, and in line with the base as well (so, the cutout starts from within the base and extrudes outward, with part of the cutout below the base.)
*   I'm using this for a 3d printer spool so I think I can ignore most of the stuff that makes it suitable for a spool of wire.

I'd like all of these parameters to be configurable in the main OpenSCAD file, so it's easy to adjust for different racks and spools. I do not need you to provide additional files beyond the ones that are necessary to fulfil my request.

I think that's everything. Could you generate the OpenSCAD files for me?

[Assistant]
spoolholder_non_modular.scad:
```
//the outer diameter of the spool
spoolDiameter=250;
// the thickness of the spool
spoolWidth=45;
// Diameter of the center hole in the spool
centerDiameter=50;
// Distance between the outer edges of the two large wires that make up the lip
lipWidth=34.25;
// Diameter of the large wires that make up the lip
wireWidth=6.5;
// Add a notch in the clip so it has flex and doesn't break while putting it on
doFlexNotch=true;
//the width of the clip accross
width=30;
//not used yet
//wireSpacing=16.9;
//smallWireWidth=3.5;

module clip(_lip_width, _wire_radius, _do_flex_notch, _width, _wire_spacing, _small_wire_width) {
    difference() {
        cube([_wire_radius*4, _lip_width+(2*_wire_radius), _width]);
        translate([_wire_radius, _wire_radius*2, 0]) cube([_wire_radius*3, _lip_width-(2*_wire_radius), _width]);
        translate([_wire_radius*2, _wire_radius*2, 0]) cylinder(r=_wire_radius, h=_width, $fn=100);
        translate([_wire_radius*2,_lip_width, 0]) cylinder(r=_wire_radius, h=_width, $fn=100);
        if(_do_flex_notch) {
                translate([_wire_radius*2, _wire_radius*.9, 0]) cylinder(r=_wire_radius*0.3, h=_width, $fn = 100);
        }
        //comming soon
        if(_wire_spacing < _wire_radius) {
        }
    }
}
clip(lipWidth, wireWidth/2, doFlexNotch, width, wireSpacing, smallWireWidth);
//include <clip.scad>;
module spoolHolder(_spool_diameter, _spool_width, _center_diameter) {
    _lipWidth=3;
    translate([-1*(_spool_diameter)/2, 0,0])
        cube([(_spool_diameter)/2, _center_diameter/2, width]);
    difference(){
        union() {
            translate([-1*(_spool_diameter)/2, 0,])
                cylinder(r=_center_diameter/2, h=_spool_width+width, $fn=100);
            translate([-1*(_spool_diameter)/2, 0,width+_spool_width])
                cylinder(r1=_center_diameter/2, r2=_center_diameter/2+_lipWidth, h=_lipWidth, $fn=100);
        }
        translate([-1*(_spool_diameter+_center_diameter)/2-_lipWidth, -_center_diameter/2-_lipWidth,])
            cube([_center_diameter+_lipWidth*2, _center_diameter/2+_lipWidth, _spool_width+_lipWidth+width]);
        translate([-1*(_spool_diameter+_center_diameter)/2-_lipWidth,0,0])
            cube([_lipWidth, 4*_lipWidth, _spool_width+_lipWidth+width]);
        translate([-1*(_spool_diameter-_center_diameter)/2,0,width])
            cube([_lipWidth, 4*_lipWidth, _spool_width+_lipWidth]);
    }
}
spoolHolder(spoolDiameter, spoolWidth, centerDiameter);
```


[User]
I'm looking to create a physical unit circle device, similar to the one described in the provided text. It will have a faceplate, a front dial, a rear dial, a sine/cosine dial, a center hexagon rod, and a linear guide. I want to be able to adjust all of the critical parameters using OpenSCAD variables.

Here are the key specifications, which should all be customizable via variables:

*   **Bearing Diameter (bd):**  This is the diameter of the bearing used in the assembly, default is 51.7
*   **Bearing Thickness (bt):** Thickness of the bearing, default is 15
*   **Center Hex Rod Size (chrs):** Size of the center hex rod, default is 6.4
*   **Center Hex Hole Size (chhs):** Size of the hex hole in the dials, default is 6.4
*   **Extruder Size (ES):** Size of the extruder nozzle, default is 0.4
*   **Inside Compensation (ic):** Compensation for inside dimensions, default is 0.2
*   **Face Size (fs):** Size of the face, default is 25
*   **Face Thickness (ft):** Thickness of the faceplate, default is 1.2
*   **Face Overlap (fo):** Amount of overlap for the face, default is 1
*   **Face Angle (fa):** Angle of the face, default is 4
*   **Front Dial Length (fdl):** Length of the front dial, default should be calculated from other parameters
*   **Face Inner Radius (fir):** Inner radius of the faceplate, default should be calculated from other parameters (bd)

I'd like the design to use the following modules, which I will use booleans to toggle rendering:

*   **faceplate():** The main faceplate of the device
*   **front_dial():** The rotating front dial
*   **rear_dial():** The rotating rear dial
*   **sine_dial():** A dial for displaying the sine and cosine
*   **hexagon_rod():** The center hex rod
*   **linear_guide():** Guides for the sine/cosine dial

I'll need a cross helper function.

I will also need these modules for other features:

*   **rod_support()**: supporting structures for the rod
*  **bearing_support()**:  supporting structure for the bearing
* **stand()**:  the stand of the device
* **markings()**: markings on the faceplate

Additionally, the user should be able to adjust how many sine/cosine dials are rendered (using variable "rsd" - 0, 1, or 2) as well as how many linear guides are used (variable "rlg", 0, 1, or 4). I will also need to toggle if a faceplate, front dial, rear dial, center hexagon rod, sine/cosine dial, and linear guide are rendered by using booleans variables rfp, rfd, rrd, rhr, rsd, and rlg.

Could you generate a set of OpenSCAD files that implements this parametric design? Make sure to include the math for the computed values like `fir` and `fdl`.

I'd like the generated code to use the following OpenSCAD libraries: `BOSL2`.

[Assistant]
physical_unit_circle_thingivers.scad:
```

/*[what to render]*/

//render face plate
rfp=1;	//[1:true,0:false]
//render front dial
rfd=1;	//[1:true,0:false]
//render rear dial
rrd=1;	//[1:true,0:false]
//render cosine dial
rcd=1;	//[1:true,0:false]
//render hexagon center rod
rhr=1;	//[1:true,0:false
//render sine/cosine dial
rsd=2;	//[0:1:2]
// render linear guide
rlg=4;	//[0:1:4]

/*[parameters]*/

//bearing diameter
bd=51.7;
//bearing thickness
bt=15;
//center hex rod size
chrs=6.4;
//center hex hole size
chhs=6.4;
//extruder size
ES=0.4;
//inside compensation;
ic=0.2;

/*[hidden]*/

//face size
fs=25;
//face thickness
ft=1.2;
//face overlap
fo=1;
//face angle
fa=4;
//face inner radius
fir=bd/2-bd/20;
//front dial length
fdl=fir+fs*2/3;

if(rfp)
{
	faceplate();
	rod_support();
	bearing_support();
	stand();
}

if(rfd)
	translate([0,fir+2*fs+fdl/5,0])
		front_dial();

if(rrd)
	translate([0,fir+2*fs+fdl/5+fdl/3,0])
		rear_dial();

if(rhr)
	translate([-3*chrs,fir+2*fs+fdl/5,0])
		hexagon_rod();

translate([0,fir+2*fs+fdl/5+fdl/3+fs*2/3-(fir+fs*8/5-fs*2/3-10*ft)*5/3,0])
	for(i=[1:1:rsd])
		translate([0,(i*fir+fs*8/5-fs*2/3-10*ft)*5/3,0])
			sine_dial();

translate([0,fir+2*fs+fdl/5+fdl/3+fs*2/3+(fir+fs*8/5-fs*2/3-10*ft)*5/3,0])
	for(i=[1:1:rlg])
		translate([0,i*8*ft,0])
			linear_guide();

module cross_helper()
{
	difference()
	{
		for(i=[0,1])
			rotate([0,90,i*90])
				translate([i*ft,0,0])
				cylinder(r=fs*2/6+ft, h=((fir+fs*4/3+fs*1/3)-fs*2/6-fdl*16/14+2*ft)*2,center=true);

		for(i=[0,1])
			rotate([0,0,i*90])
		{
			translate ([0,0,-(fs*2/6+2*ft)/2-ft*4])
			cube([((fir+fs*4/3+fs*1/3)-fs*2/6-fdl*16/14+3*ft)*2, 2*(fs*2/6+2*ft), fs*2/6+2*ft],center=true);
		translate ([0,0,(fs*2/6+2*ft)/2+ft*2-0*ft])
			cube([((fir+fs*4/3+fs*1/3)-fs*2/6-fdl*16/14+3*ft)*2, 2*(fs*2/6+2*ft), fs*2/6+2*ft],center=true);

		translate([0,0,i*-ft])
			{
		cube([((fir+fs*4/3+fs*1/3)-fs*2/6-fdl*16/14+2*ft)*2+ft,fs*2/3+2*ic,ft*3/2], center=true);
		translate([0,0,ft*3/2])
		cube([fir*2+fs*11/3+11/2*ft-fo,fs*2/3-ft,ft*4], center=true);
			}

		}
		cylinder(r=fdl/20+ft,h=10*ft,$fn=20,center=true);
	}
}

module linear_guide()
{
	cube([(fir+fs*8/5+5*ft)*2, 5*ft-ic, ft],center=true);
}

module center_hex_hole_test()
{
	difference()
	{
		cylinder(r=max(chrs/2+2*ft,fdl/10),h=ft,center=true);
		cylinder(r=chrs/(2*cos(180/6)),h=ft*2,center=true,$fn=6);
	}
}
module hexagon_rod()
{
	translate([0,0,(bt+6*ft)/2-ft*1/2])
		cylinder(r=(chrs-ic)/(2*cos(180/6)),h=bt+6*ft,center=true,$fn=6);
}

module sine_dial()
{

	difference()
	{
		translate([((fir+fs*2-fo)-(fir+fs*8/5+7/2*ft)+ft*2)/2,0,0])
			cube([(fir+fs*8/5+7/2*ft)+(fir+fs*2-fo)+ft*2,fs*2/3,ft], center=true);
		cube([fdl*16/7, fdl/10+ic,2*ft], center=true);
	}
	for(i=[-1:2:1])
	{
		translate([i*(fir+fs*8/5),0,ft*5/4])
			difference()
			{
				cube([7*ft,fir+fs*8/5-fs*2/3-10*ft,ft*7/2],center=true);
				cube([5*ft,fir+fs*8/5-fs*2/3-8*ft,ft*3/2],center=true);
				translate([0,0,ft*4/3])
					cube([4*ft,fir+fs*8/5-fs*2/3-8*ft,ft*3/2],center=true);
				translate([0,0,3/2*ft])
					cube([fir*2+fs*11/3+11/2*ft-fo,fs*2/3,5*ft], center=true);
			}
	}
	translate([(fir*2+fs*11/3+11/2*ft-fo)/2+(fs*1/3-fo-ft*3/2)/2-1/2*ft,0,(bt+9*ft)/2])
	rotate([0,-90,0])
	difference()
	{
		cube([bt+9*ft,fs*2/3,ft],center=true);
			translate([(bt+9*ft)/2,0,-bt+9/2*ft/4])
				for(i=[45,-135])
				rotate([0,0,i])
					cube([fdl/2,fdl/2,fdl/2]);
	}
}

module front_dial()
{
	difference()
	{
		union()
		{
			translate([fir+fs*2/7,0,0])
				cylinder(r=fdl/20,h=fdl/5);
			cylinder(r=max(chrs/2+2*ft,fdl/10),h=ft,center=true);
			translate([fdl/2,0,0])
				cube([fdl,fdl/5,ft],center=true);
		}
		translate([fdl,0,-fdl/4])
			for(i=[45,-135])
				rotate([0,0,i])
					cube([fdl/2,fdl/2,fdl/2]);
		cylinder(r=chhs/(2*cos(180/6)),h=ft*2,center=true,$fn=6);

	}
}

module rear_dial()
{
	difference()
	{
		union()
		{
			cylinder(r=max(chrs/2+2*ft,fdl/10),h=ft,center=true);
				translate([fdl/2,0,0])
					cube([fdl,fdl/5,ft],center=true);
		}
				cylinder(r=chhs/(2*cos(180/6)),h=ft*2,center=true,$fn=6);
		translate([fdl,0,-fdl/4])
			for(i=[45,-135])
			rotate([0,0,i])
				cube([fdl/2,fdl/2,fdl/2]);
	}
	translate([fdl,0,-ft/2])
		cylinder(r=fdl/20,h=7*ft,$fn=20);
}

module faceplate()
{
	difference()
	{
		union()
		{
			difference()
			{
				cylinder(r=fir+fs, h=ft,center=true,$fa=4);
				cylinder(r=fir, h=ft*2,center=true,$fa=4);
			}

			for (i=[0:90:359])
			{
				rotate([0,0,i])
					translate([0,fs/2+fir+fs-fo,0])
							cube([2*(fir)+4*fs-2*fo,fs,ft],center=true);
			}
		}
		markings();
	}
}

module markings ()
{
	rotate ([180,0,0]){

	for (i=[0:-90:-179])
		rotate([0,0,i])
			{
				for(i=[-fdl:fdl/10:fdl])
					translate([i,(fir+2*fs-fo-fs/4),ft/4])
						cube([1,fs/4,ft],center=true);
				for(i=[-fdl:fdl/2:fdl])
					translate([i,(fir+2*fs-fo-fs/4),ft/4])
						cube([1,fs/3,ft],center=true);
			}
	list1=["-1","-.5","0",".5","1"];
	list2=[for (a=[-fdl:fdl/2:fdl])a];

	{
	for(i=[0:4])
		translate([list2[i],(fir+2*fs-fo-fs*5/7),ft/4])
			linear_extrude(height=ft,center=true)
				text(text = str(list1[i]), size = fs/3, valign = "center",halign ="center");
	for(i=[0:4])
	translate([(fir+2*fs-fo-fs*5/7),list2[i],ft/2])
		linear_extrude(height=ft,center=true)
			text(text = str(list1[i]), size = fs/3, valign = "center",halign ="center");
	}
	list3=["0","π/2","π","3π/2"];

	for(i=[0:45:359])

		rotate([0,0,i])
			translate([fir+3/4*fs,0,ft/4])
				cube([fs/3,1,ft],center=true);

	for(i=[0:3])
		translate([cos(i*90)*(fir+fs*3/8),sin(i*90)*(fir+fs*3/8),ft/4])
			linear_extrude(height=ft,center=true)
				text(text = str(list3[i]), size = fs/3, valign = "center",halign ="center");

	for(i=[0:10:359])
	rotate([0,0,i])
		translate([fir+3/4*fs,0,ft/2])
			cube([fs/4,1,ft],center=true);

}
}

module rod_support()
{
//	for (i=[0:90:359])
//		rotate([0,0,i])
//	{
//		translate([fir+fs*8/5,fir+fs*8/5,0])
//			cube([10*ft,10*ft,ft],center=true);
//		translate([fir+fs*8/5,0,0])
//			cube([ft+0.4,(fir+fs*8/5)*2,ft],center=true);
//	}
	for (i=[-1,1])
		for (j=[-1,1])
			translate([i*(fir+fs*8/5),j*(fir+fs*8/5),bt+6*ft])
				{

				difference()
				{
					for(i=[0,1])
					translate([0,0,ft*3/2*i])
						rotate([0,0,i*90])
							hull()
							{
								cube([8*ft,8*ft,ft*7/2],center=true);
								translate([0,0,-ft*7/4-fs*1/12])
								cube([ft*2,8*ft,5*ft],center=true);
							}
					for(i=[0,1])
						translate([0,0,ft*3/2*i])
						rotate([0,0,i*90])
						{
							cube([5*ft,9*ft,ft*3/2],center=true);
							translate([0,0,ft*4/3])
							cube([4*ft,9*ft,ft*4],center=true);
						}
				}for(i=[0,1])
					rotate([0,0,i*90])
								translate([0,0,-bt/2-ft*4])
						cube([ft*2,8*ft,bt+4*ft],center=true);
				}

	}

module bearing_support ()
{
	translate([0,0,(bt+ft*2)/2])
		intersection()
		{
			difference()
				{
				inside_hole(bd/2+ft,bt+ft*2,ES);
				inside_hole(bd/2,bt*2,ES);
				}
			for (i=[0:90:179])
				rotate([0,0,i])
					cube([bd*2,bt,bt*2],center=true);
		}
	for(i=[0:90:359])
		rotate([0,0,i])
		translate([bd/2,0,bt+ft*3/2])
		cube([3/2*ft,2*ft,ft],center=true);
}

module stand ()
{
	a=fir+2*fs-fo-ft;
	for (i=[-1:2:1])
	translate([i*a,0,0])
	polyhedron
    (points = [
			[ft,fir+fs-fo,0], [-ft,fir+fs-fo,0],[ft,fir+fs-fo,bt], [-ft,fir+fs-fo,bt],
			[ft, (fir+2*fs-fo)*(1-sin(fa))+(bd/2+ft)*sin(fa),bd/2],
			[-ft, (fir+2*fs-fo)*(1-sin(fa))+(bd/2+ft)*sin(fa),bd/2],
			[ft, fir+2*fs-fo,0], [-ft, fir+2*fs-fo,0]],

     faces = 	[[0,2,1],[1,2,3],[2,4,3],[3,4,5],[4,6,5],[5,6,7],[0,1,6],[1,7,6],
				[1,3,7],[3,5,7],[0,6,2],[2,6,4]]
     );
}

module inside_hole (r, h, t, compensate=true, center=true) //t=extruder size
{
    n = max(round(4*r),3);
	if(compensate)
	{
			r=(t+sqrt(pow(t,2)+4*pow(r,2)))/2;
			cylinder(h=h, r=r/cos(180/n),center=center,$fn=n);
	}
		else
		{
			cylinder(h=h, r=r/cos(180/n),center=center,$fn=n);
		}
}
```