[User]
Okay, I have a somewhat complicated OpenSCAD design that I'm struggling to make fully parametric. It's meant to be an enclosure for a small motor setup, and it currently has some hardcoded dimensions which I'd like to be easily adjustable.

Here's a breakdown of what I'm trying to achieve, and what the existing code does:

**Overall Structure:** The design is basically two cylindrical housings connected by a rectangular support structure and some cylindrical rods/axles.

**Specific Features and Dimensions (Currently Hardcoded):**

*   **Distance Between Axis (Important Parameter):** The two main cylinders are separated by a center-to-center distance of 15mm. I need this to be a parameter, let's call it `dist`.
*   **First Cylinder Housing:**
    *   Has a base cylinder with a 8mm radius, 25mm height.
    *   Has a recess with a 6mm radius and 5mm height.
    *   Has a central hole with a 3mm radius and 40mm height.
    *   Has a top recess at 21mm from the base, 6mm radius and 4mm height
*   **Second Cylinder Housing:**
    *   Has a cylinder with 6mm radius and 25mm height.
    *   Has a central hole with a 5mm radius and 50mm height.
    *   Has a rectangular cutout, 25mm x 2mm x 30mm, positioned at z=0, with its negative y-axis edge aligned with the center of cylinder.

*   **Connecting Support Structure:**
    *   A rectangular section connecting the two main housings. This section has a width of (dist/2) + 15, height of 6mm and depth of 25mm. It is centered along the y-axis and it's center in x is located at -dist/2, and at z=12.5.
    *   Two cylindrical holes passing through this support with 6mm radius and 40mm height, with 5mm radius and 50mm height, both centered at the origin of each cylinder.

*   **Axle Support:**
    *   There are two cylindrical supports for a horizontal shaft (axle), each with a 2.5mm radius, 17mm length,  centered in the center of the support structure. These extend 8.5mm out from either side of the support.
    *   One horizontal axle with 1.5mm radius and 30mm length centered at the origin of second cylinder support structure.

*   **Support for the Motor Wires**
     * Two rectangles extending from the second cylinder center, with a width of 5mm, depth of 2mm and 25mm of height, the first being at y=1, and the second at y=-3.
     * Two cylindrical holes passing through this wires support with 1.1mm radius and 17mm length.

**Specific Issues with the Current Code:**

*   The dimensions are hardcoded, making it difficult to adapt to different motor sizes.
*   I'm not sure why one of the small recess cylinder is translate by `[0,0,21]` and contained between brackets. I suppose is because is just a translate, but I don't know if that syntax is better than just write `translate([0,0,21]) cylinder(...);`.
*   I want a cleaner, more parametric design so I can easily adjust the parameters without having to calculate offsets every time.

**Requirements for the New Parametric Design:**

1.  **`dist` parameter:**  The distance between the centers of the two main cylinder housings should be easily adjustable via a variable named `dist`.
2.  **All relevant dimensions should be parameterized:** This includes radii, heights, and sizes of all the cylinders, rectangular blocks, holes, and the distances between the elements.  I'd like sensible names for each parameter, such as `cylinder1_radius`, `cylinder1_height`, etc.
3.  **Clear Code:**  I'd appreciate a clean, well-commented code structure. It should be easy to understand and modify.
4.  **No library dependencies:** I don't need to use any specific libraries for this.

**Desired output:**

I'd like you to provide me with a new OpenSCAD file that achieves this parametric design. It should be a single `.scad` file that includes all the needed parameters at the beginning of the file so I can easily change the dimensions.

Let me know if you need any further clarification.

[Assistant]
ENCLOSURE_MOTOR_V7_ad.scad:
```
$fn=100*1;
//distance-between-axis-in-mm
dist=15;

//No sé que carallo quieres hacer

difference()
{
	union()
	{
		difference()
		{
			cylinder(h = 25, r=8);
			cylinder(h = 5, r=6);
			cylinder(h = 40, r=3);
			translate([0,0,21])
			cylinder(h = 4, r=6);  //Esto porque lo metes entre corchetes???
		}
		translate([dist,0,0])

		difference()
		{
			cylinder(h = 25, r=6);
			cylinder(h = 50, r=5);
			translate([0,-1,0])
			cube(size = [25,2,30], center = false);
		}

		difference()
		{
			translate([-dist/2,0,12.5])
			cube(size = [((dist/2)+15),6,25], center = true);
			translate([-dist,0,0])
			cylinder(h = 40, r=6);
			cylinder(h = 50, r=5);
		}
		rotate([90,0,0])
		translate([-(dist/2),12.5,0])
		cylinder(h = 17, r=2.5, center = true);
	      rotate([90,0,0])
		translate([-(dist/2),12.5,0])
		cylinder(h = 17, r=2.5, center = true);
		difference()
		{
			union()
			{
				translate([5,1,0])
				cube(size = [5,2,25],center = false);
				translate([5,-3,0])
				cube(size = [5,2,25], center = false);
			}
			rotate([90,0,0])
			translate([7.5,12.5,0])
			cylinder(h = 17, r=1.1, center = true);
		}
	}
}

rotate([90,0,0])
translate([(dist/2),12.5,0])
cylinder(h = 30, r=1.5, center = true);

```


[User]
Okay, I'd like a parametric OpenSCAD design for a picture frame that can either stand on its own or be used as a fridge magnet. I have a specific set of requirements, so please don't make assumptions.

The frame should consist of two main parts: a front piece that holds the picture and a back piece that fits into the front. The back piece should include optional holes for magnets, if it is going to be used as a fridge magnet. I need to be able to control all the key dimensions and parameters for this design using variables. I'd like the following parameters to be configurable:

*   **`height`**: The height of the picture the frame will hold.
*   **`width`**: The width of the picture the frame will hold.
*   **`border`**: The width of the frame's border around the picture.
*   **`overlap`**: The amount the frame border overlaps the edge of the picture.
*   **`thickness`**: The total thickness of the frame.
*   **`back_thickness`**: The thickness of the back piece of the frame.
*   **`magnet_diameter`**: The diameter of the magnet holes. If this is set to zero, no magnet holes should be generated (but you might want to still include holes to save on filament).
*   **`stand`**: A boolean variable to include a stand to make it free-standing. This might be a dropdown with values "Stand" or "NoStand".
*   **`calibration`**: An integer calibration value. This is used to adjust the size of the back piece so that it fits snugly into the front piece. This could be a slider that allows for values from -10 to 10. I want to be able to adjust this by 1/10ths of a millimeter.

The design should allow for two options for output:

1.  **Front**: Only the front piece of the frame is generated.
2.  **Back**: Only the back piece of the frame is generated.
3. **Both**: Both the front and back pieces are generated.

I need a variable called `plate` that will control what is output, with dropdown options "Back", "Front", or "Both".

The stand should attach to the back of the front section of the frame via a support. It should not extend out beyond the bottom of the frame but use the material already present. The frame should not have sharp edges, they should be somewhat rounded using the hull module.  I would like to configure the `overhang` of the rounded edges as well. I'd like to specify the `rounded` variable that can influence the roundedness of the edges.

I don't need any special libraries like MCAD or BOSL in this code.

Could you generate the OpenSCAD code for me based on these requirements? I want to be able to copy this code directly into OpenSCAD and test it by modifying the variables.

[Assistant]
PictureFrame.scad:
```
// Title: Picture Frame
// Author: http://www.thingiverse.com/Jinja
// Date: 28/9/2013

/////////// START OF PARAMETERS /////////////////

// The height of the picture
height = 45.5;

// The width of the picture
width = 36;

// The width of the frame border
border = 6;

// How much the border overlaps the edge of the picture
overlap = 2;

// How thick the frame is in total
thickness = 4;

// How thick the backing is
back_thickness = 2;

// The diameter of the magnet holes, 0 if you don't want holes. Even if you're not adding magnets, adding holes uses less plastic.
magnet_diameter = 12.8;

// whether or not to include a stand
stand = "NoStand"; //[ Stand, NoStand ]

// calibration, how many 10ths of a millimeter to adjust the backing size so it is a snug fit in the frame. Increase if it's too loose, decrease if it's too tight. Once you've found the right value for your printer you should be able to print frames of any size. Experiment with small frames first.
calibration = 0; //[-10:10]

// What to include on the plate
plate = "Both"; //[ Back, Front, Both ]

/////////// END OF PARAMETERS /////////////////
rounded = 0.7*1;
overhang=45*1;

adjust = calibration/10;

$fs=0.3*1;
//$fa=5*1; //smooth
$fa=8*1; //nearly smooth
//$fa=20*1; //rough

if( ( plate == "Front" ) || ( plate == "Both" ) )
{
	front( height, width, border, overlap, thickness, back_thickness, stand );
}

if( ( plate == "Back" ) || ( plate == "Both" ) )
{
	translate([0, width+border ,back_thickness*0.5])
	back( height+adjust+1, width+adjust+1, back_thickness, magnet_diameter);
}

module front( height, width, border, overlap, thickness, back_thickness, stand )
{
	difference()
	{
		translate([0,0,thickness*0.5])
		frame( height, width, border, overlap, thickness );
		translate([0,0,thickness-(0.5*back_thickness)])
		back( height+1, width+1, back_thickness*1.05 );
	}
	y = (height*0.7)*cos(75);
	x = y*cos(75);
	s = border-overlap-0.5;
	if( stand=="Stand" )
	{
		translate([height*0.5+s+0.5,0,thickness])
		hull()
		{
			translate([-s*0.5,0,0])
			cube([s,s,0.01], true);
			translate([-1-x,0,y])
			rotate([90,0,0])
			cylinder(s,1,1,true);
		}
	}
}

module back( height, width, back, diam )
{
	gap = 1;
	hremaining = (((height-diam)/2)-gap);
	hnum=floor( hremaining/(diam+gap) );
	hspacing=((hremaining-((diam+gap)*hnum))/(hnum+1))+diam+gap;
	wremaining = (((width-diam)/2)-gap);
	wnum=floor( wremaining/(diam+gap) );
	wspacing=((wremaining-((diam+gap)*wnum))/(wnum+1))+diam+gap;
	difference()
	{
		cube( [ height, width, back ], true );
		if( diam > 0 )
		{
			translate([0,0,-back])
			for(i=[-hnum:1:hnum])
			{
				for(j=[-wnum:1:wnum])
				{
					translate([i*hspacing,j*wspacing,0])
					cylinder( back*2, diam*0.5, diam*0.5 );
				}
			}
		}
	}
}

module frame( height, width, border, overlap, back )
{
	difference()
	{
		cube( [ height+2*(border-overlap), width+2*(border-overlap), back ], true );
		translate([0,0,-1])
		cube( [ height+2*(-overlap), width+2*(-overlap), back+2 ], true );
	}
}

module cutter(dist, overhang)
{
	size = dist*2;

	translate([dist,-dist,-dist])
	cube([size,size,size]);

	translate([-dist-size,-dist,-dist])
	cube([size,size,size]);

	translate([dist,-dist,0])
	rotate([0,-overhang,0])
	cube([size,size,size]);

	translate([-dist,-dist,0])
	rotate([0,-90+overhang,0])
	cube([size,size,size]);

	translate([dist,-dist,0])
	rotate([0,90+overhang,0])
	cube([size,size,size]);

	translate([-dist,-dist,0])
	rotate([0,180-overhang,0])
	cube([size,size,size]);

}

module diamond( rounded )
{
	dist = rounded;
	difference()
	{
		cube([2*rounded,2*rounded,2*rounded], true);
		for(i=[0:45:179])
		{
			rotate([0,0,i])
			cutter(dist, overhang);
		}
	}
}

```


[User]
Okay, I'm looking to design a custom hose adapter using OpenSCAD. I need something that can handle multiple inputs and outputs, and I need to be able to specify the inside diameter of the tubing for each connection. I’d also like some control over the strength and barb count of each connection. I'm thinking of using this mostly for pond pumps and tubing.

Here's what I have in mind:

**General Structure:**

*   I need to be able to choose between an "inline" adapter and a "vault" style adapter. An inline adapter would be a simple straight connection, while a vault adapter would have a more central body with multiple inputs and outputs radiating from it.
*   I need to be able to specify the number of inputs and outputs.
*   For each input and output, I need to specify:
    *   The inside diameter of the tubing in either inches or millimeters. I need to be able to choose between US or Metric.
    *   A strength factor, where a higher number results in thicker walls for stronger connections.
    *   The number of barbs on each connection, and even an option for a smooth, barb-less connector.
*   For the inline adapter, I need a choice of junction type, which at the moment can just be "round".
*   For the vault adapter:
    *   The wall thickness of the vault itself needs to be adjustable.
    *   I need to be able to control a ratio between connector diameter to space allocated in the vault, which allows for hose clamps.
    *   I'd like to be able to add supports to the vault for printing, although I'm guessing my slicer will probably do a better job so perhaps an option to switch those on or off.

**Specific details:**

*   I need the option to have a smooth, barb-less output, where I can control the output length.
*   I need some control over the inside diameter ratio for both inputs and outputs to adjust the diameter of the hole inside the barbs.
*  I'd need the option of some "reinforcement" added to the base of each barb stack by using a modifier on the barb stack itself.

I'm looking for a parametric design, so I can change these parameters and re-generate the model. I'm also not really expecting the code to use any external libraries, but if you do, please be explicit about what libraries are being used (like BOSL or something similar). I plan to print this with PLA mostly so something that prints easily is preferred.

[Assistant]
BarbGenerator-v6.scad:
```
// Barb generator v1.6 - Updated 30-Jun-2020
// Use customizer keyword in Thingiverse object to enable customize button
// See https://customizer.makerbot.com/docs

/* [Inputs] */

// Number of hose inputs - which is input and which is output doesn't matter but the input will be on the bottom of the print so should be the larger of the two
inputs = 2;

//  Measurement system for inputs - US in inches, Metric in mm
input_units = "US"; // [US,Metric]

// Input tubing inside diameter, e.g. 0.5 for 1/2 inch (US); 0.625 for 5/8 (0.620 may be better), 0.75 for 3/4, etc; note that input is always on the bottom of the print so should be the larger unless printing a manifold
input_size = 0.91;

// Strength factor - use more than 1 for thicker walls to handle higher pressure and stronger clamping. Range: 0.9-1.5. Reduce only for I.D. greater than 0.5 inches
input_strength = 1.0;

// Input barb count - may be 3 for larger barbs, more for smaller
input_barb_count = 2;

/* [Outputs] */

// Number of hose outputs
outputs = 1;

// Measurement system for outputs
output_units = "US"; // [US,Metric]

// Output tubing inside diameter, e.g. 0.17 for 1/4 inch OD (outside diameter) vinyl tubing (US); 0.25 for 1/4 inch ID (inside diameter) (US); 0.375 for 3/8 inch ID. For a PVC pipe connector going into a female fitting, pipe sizes are in inside diameter, so the outside of a 3/4" PVC pipe is actually 1.0 inches (used with output_barb_count=0 for a smooth output)
output_size = 0.500;

// Strength factor - use more than 1 for thicker walls to handle higher pressure and stronger clamping. Range: 0.9-1.5. Reduce only for I.D. greater than 0.5 inches
output_strength = 1.1;

// Output length if barb count = 0, in multiples of diameter. Ignored if output is barbed
output_smooth_length = 1.0;

// Output barb count - may be 3 for larger barbs, 0 for smooth
output_barb_count = 2;

/* [Connector] */

// Connector type - Use inline for a single input and single output
connector_type = "vault"; // [inline,vault]

// Inline junction type - currently only round is supported
inline_junction_type = "round"; // [round,hex,none]

/* Manifold connectors */

// Vault wall thickness in mm - increase for higher pressure connections or heavier hoses. 2.5 to 4.0
vault_wall_thickness = 3.5;

// Add support under vault for printing. Not recommended - you'll usually get better support for vault connectors using your favorite slicer's "generate support from bed" feature.
vault_support = "yes"; // [yes,no]

// Ratio of connector diameter to space allocated in vault - increase to allow more space for hose clamps, etc.
vault_connector_ratio = 1.8;

/* [Advanced] */

// Width of junction as ratio of tubing I.D.
inline_junction_width = 0.8;

// Inside diameter ratio for output
output_inside_diameter_ratio = 0.6;

// Inside diameter ratio for input
input_inside_diameter_ratio = 0.6;

make_adapter( input_units == "US" ? input_size * 25.4 : input_size, output_units == "US" ? output_size * 25.4 : output_size );

module make_adapter( input_diameter, output_diameter )
{

if (connector_type == "inline" && inputs == 1 && outputs == 1)
{
  union() {
      junction_height = 4;
      input_barb( input_diameter );
      junction( input_diameter, output_diameter, junction_height );
      output_barb( input_diameter, output_diameter, junction_height );
  }
}
if (connector_type == "vault" || inputs > 1 || outputs > 1)
{
  center_width = max(inputs * input_diameter * vault_connector_ratio, outputs * output_diameter * vault_connector_ratio);
  center_height = max(input_diameter * vault_connector_ratio, output_diameter * vault_connector_ratio);
  // Should be 4 normally
  junction_height = 4;
  center_empty_input = center_width - input_diameter * vault_connector_ratio * inputs;
  center_empty_output = center_width - output_diameter * vault_connector_ratio * outputs;
  // New to 1.5: for vault, use reinforcing ring to reduce snap-off tendency
  // Reinforcement units are fractions of inside diameter
  union() {
       //input_barb( input_diameter );
       for (i = [1:inputs])
	    {
		   translate( [center_empty_input / 2 + input_diameter * vault_connector_ratio / 2 + input_diameter * (i-1) * vault_connector_ratio,0,0] ) input_barb( input_diameter, 0.4 );
	    }
		 //echo( "inputs=", inputs, "; input_diameter=", input_diameter, "; outputs=", outputs, "; output_diameter=", output_diameter );
		 //echo( "center_width=", center_width, "; by input=", inputs * input_diameter * vault_connector_ratio, "; by output=", outputs * output_diameter * vault_connector_ratio, "; center_empty_input=", center_empty_input, "; center_empty_output=", center_empty_output );
		 difference()
		 {
			translate([-vault_wall_thickness,-vault_wall_thickness,0]) vault( input_diameter, junction_height, center_width, center_height, center_height, vault_wall_thickness, output_diameter, center_empty_output );
			for (i = [1:inputs])
			{
				// Make holes in the vault for input entry
      		translate( [center_empty_input / 2 + input_diameter * vault_connector_ratio / 2 + input_diameter * (i-1) * vault_connector_ratio,0,input_diameter * input_barb_count * 0.9 - center_height / 3] ) cylinder( r=input_diameter * input_inside_diameter_ratio / 2, h=center_height, $fn=60 );
			}
			for (i = [1:outputs])
			{
				// Make holes in the vault for output egress
      		translate( [center_empty_output / 2 + output_diameter * vault_connector_ratio / 2 + output_diameter * (i-1) * vault_connector_ratio,0, center_height * 1.5] ) cylinder( r=output_diameter * output_inside_diameter_ratio / 2, h=center_height * 1.9, $fn=60 );
			}
		 } // end vault with holes
       //output_barb( input_diameter, output_diameter, 12 );
	    for (i = [1:outputs])
		 {
			translate( [center_empty_output / 2 + output_diameter * vault_connector_ratio / 2 + output_diameter * (i-1) * vault_connector_ratio,0,-output_diameter * output_inside_diameter_ratio / 2] ) output_barb( input_diameter, output_diameter, center_height + 2 * vault_wall_thickness, 0.4 );
		 }
     }
 } // end if vault
} // end module make_adapter

/****
module tometric( unit_type, value )
{
  if (unit_type == "US") value * 25.4;
  else value;
}
***/

module barbnotch( inside_diameter )
{
  // Generate a single barb notch
  cylinder( h = inside_diameter * 1.0, r1 = inside_diameter * 0.85 / 2, r2 = inside_diameter * 1.16 / 2, $fa = 0.5, $fs = 0.5, $fn = 60 );
}

module solidbarbstack( inside_diameter, count, reinforcement = 0 )
{
    // Generate a stack of barbs for specified count
    // The height of each barb is [inside_diameter]
    // and the total height of the stack is
    // (count - 1) * (inside_diameter * 0.9) + inside_diameter
    union() {
      barbnotch( inside_diameter );
		for (i=[2:count])
		{
			translate([0,0,(i-1) * inside_diameter * 0.9]) barbnotch( inside_diameter );
		}
		/***
		if (count > 1) translate([0,0,1 * inside_diameter * 0.9]) barbnotch( inside_diameter );
		if (count > 2) translate([0,0,2 * inside_diameter * 0.9]) barbnotch( inside_diameter );
		***/
        if (reinforcement > 0) translate([0,0,(count-1)*inside_diameter * 0.9 + inside_diameter * 0.5]) cylinder( h = inside_diameter * 0.5, r1 = inside_diameter * 0.85 / 2, r2 = inside_diameter * (1.16 + reinforcement) / 2, $fa = 0.5, $fs = 0.5, $fn = 60 );
    }
}

module barb( inside_diameter, count, strength_factor, reinforcement = 0 )
{
  // Generate specified number of barbs
  // with a single hollow center removal
  if (count > 0)
    difference() {
        solidbarbstack( inside_diameter, count, reinforcement );
    translate([0,0,-0.3]) cylinder( h = inside_diameter * (count + 1), r = inside_diameter * (0.75 - (strength_factor - 1.0)) / 2, $fa = 0.5, $fs = 0.5, $fn=60 );
  }
  else
      difference() {
        cylinder( h = inside_diameter * output_smooth_length, r =
inside_diameter / 2, $fn=60 );
    translate([0,0,-0.3]) cylinder( h = inside_diameter * output_smooth_length + 0.6, r = inside_diameter * (0.75 - (strength_factor - 1.0)) / 2, $fa = 0.5, $fs = 0.5, $fn=60 );
          //echo( "difference h=", (2*inside_diameter), "r=", inside_diameter/2, "; ir=", inside_diameter * (0.75 - (strength_factor - 1.0)) / 2 );
    }
}

module input_barb( input_diameter, reinforcement = 0 )
{
  barb( input_diameter, input_barb_count, input_strength, reinforcement );
}

module output_barb( input_diameter, output_diameter, jheight, reinforcement = 0 )
{
  // Total height of a barb stack is
  // 0.9 * diameter for each barb overlapping
  // the one above, plus diameter for the topmost;
  // i.e. (D * 0.9 * (count-1)) + D
  input_total_height = (input_barb_count - 1) * 0.9 * input_diameter + input_diameter;
  output_total_height = (output_barb_count - 1) * 0.9 * output_diameter + output_diameter;
  if (output_barb_count == 0) {
      //output_total_height = -4.0 * output_diameter;
      //echo( "jheight=", jheight, "; out-total=", output_total_height, "; in-total=", input_total_height );
    translate( [0,0,input_total_height + jheight] )      barb( output_diameter, output_barb_count, output_strength );
  }
  else {
  translate( [0,0,input_total_height + output_total_height + jheight] ) rotate([0,180,0]) barb( output_diameter, output_barb_count, output_strength, reinforcement );
  }
}

module junction( input_diameter, output_diameter, jheight )
{
  junction_diameter_ratio = (inline_junction_type == "none") ? 1.1 : 1.6;
  lower_junction_diameter_ratio = (inline_junction_type == "none") ? 1.1 : 1.4;
  max_dia = max( input_diameter, output_diameter );
  r1a = max_dia * lower_junction_diameter_ratio / 2;
  r2a = max_dia * junction_diameter_ratio / 2;
  r1b = input_diameter / 2;
  r2b = output_diameter / 2;
  input_total_height = (input_barb_count - 1) * 0.9 * input_diameter + input_diameter;
  {
  //echo( "Junction jheight=", jheight, "; input_dia=", input_diameter, "; output_dia=", output_diameter, "; max_dia=", max_dia, r1a, r2a, r1b, r2b );
  translate( [0,0,input_total_height] ) difference() {
	cylinder( r1 = r1a, r2 = r2a, h = 5, $fa = 0.5, $fs = 0.5 );
	cylinder( r1 = r1b, r2 = r2b, h = (jheight + 1), $fa = 0.5, $fs = 0.5 );
  }
  }
}

module vault( input_diameter, jheight, center_width, center_depth, center_vheight, wall_thickness, output_diameter, center_empty_output )
{
  outside_width = center_width + 2 * wall_thickness;
  outside_depth = center_depth + 2 * wall_thickness;
  outside_vheight = center_vheight + 2 * wall_thickness;
  input_total_height = (input_barb_count - 1) * 0.9 * input_diameter + input_diameter;
  vault_base = input_total_height;
  {
    translate( [0, -outside_depth / 2 + wall_thickness, vault_base - wall_thickness] ) union()
	 {
	   difference()
      {
        // Start with a solid cube comprising the outside of the vault
        cube( [outside_width,outside_depth,outside_vheight] );
		// Subtract the bottom 2/3 as a cube along with conical sections leading up to the output openings
        union()
        {
            for (i=[1:outputs])
            {
                hull()
                {
                    // Make a hull using the bottom 2/3 of the vault inside wall
                    // and a short cylinder congruent with the bottom of each output
                    translate( [wall_thickness,wall_thickness,wall_thickness] ) cube( [center_width, center_depth, center_vheight * 2 / 3] );
                    translate( [center_empty_output / 2 + output_diameter * vault_connector_ratio / 2 + output_diameter * (i-1) * vault_connector_ratio + wall_thickness, outside_depth / 2, wall_thickness + center_vheight ] ) cylinder( r=output_diameter * 1.25 * output_inside_diameter_ratio / 2, h=0.1, $fn = 60 );
                }
            }
       }
      }
	   // Add supports if requested (not recommended)
       // Supports require printing with a brim (if using ABS)
		if (vault_support == "yes")
	   {
		  support_leg_width = outside_width * 0.48;
		  support_leg_thickness = 0.8; //wall_thickness / 2;
          // First support leg
		  translate([outside_width-support_leg_width,outside_depth-support_leg_thickness,wall_thickness-vault_base]) cube([support_leg_width, support_leg_thickness, vault_base]);
		 // Base connector for first leg //translate([outside_width-support_leg_width,0, wall_thickness-vault_base]) cube([support_leg_width, center_depth + wall_thickness*2, 0.6]);
          // Second leg (going counter-clockwise from first)
          translate([0,outside_depth-support_leg_thickness,wall_thickness-vault_base]) cube([support_leg_width,support_leg_thickness, vault_base]);
          // Base connector for second leg
		  //translate([0,0, wall_thickness-vault_base]) cube([support_leg_width, center_depth + wall_thickness*2, 0.6]);
          // Third leg (end)
           translate([0,wall_thickness,wall_thickness-vault_base]) cube([support_leg_thickness, center_depth, vault_base]);
          // Fourth leg
		  translate([0,0,wall_thickness-vault_base]) cube([support_leg_width, support_leg_thickness, vault_base]);
          // Base connector for fourth leg
          // Fifth leg
          translate([outside_width-support_leg_width,0,wall_thickness-vault_base]) cube([support_leg_width,support_leg_thickness, vault_base]);
          // Base connector for fifth leg
          // Sixth leg (end)
           translate([outside_width-support_leg_thickness,wall_thickness,wall_thickness-vault_base]) cube([support_leg_thickness, center_depth, vault_base]);
          // Additional support legs added 30-Jun-2020
          // Diagonals from corners going in - reduces
          // bridge spaghettification on the bottom of the vault
           translate([outside_width-support_leg_thickness * 1.7,wall_thickness * 0.4,wall_thickness-vault_base]) rotate([0,0,45]) cube([support_leg_thickness, center_depth * 0.36, vault_base]);
           translate([outside_width-support_leg_thickness * 1.7,vault_base + wall_thickness * 0.4,wall_thickness-vault_base]) rotate([0,0,135]) cube([support_leg_thickness, center_depth * 0.36, vault_base]);
           translate([support_leg_thickness * 0.9,wall_thickness * 0.6,wall_thickness-vault_base]) rotate([0,0,315]) cube([support_leg_thickness, center_depth * 0.36, vault_base]);
           translate([support_leg_thickness * 1.7,vault_base + wall_thickness * 0.8,wall_thickness-vault_base]) rotate([0,0,225]) cube([support_leg_thickness, center_depth * 0.36, vault_base]);
		}
    }
  }
}

```


[User]
Okay, I'm looking for an OpenSCAD design for a simple USB cable catcher that I can mount on the back edge of my desk. I've already created a rough design, but I'd like something more flexible, where I can adjust it easily for different desk and cable setups. Here's how I imagine it working, based on my existing design:

The main body of the cable catcher should be a rectangular box that sits flush against the back of the desk. It needs to have holes or slots to hold the USB cables so they don't fall behind the desk. These slots need to be recessed slightly. The design needs to have tabs or clips that hook over the top and bottom of the desk edge to keep it in place.

Here are the parameters that I need to be able to adjust:

*   **`deskh`**:  The thickness of my desk. This will obviously affect the height of the main box and the length of the holding tabs.
*   **`fullWidth`**: The overall width of the cable catcher, allowing me to scale it based on how many cables I want to keep in place.
*   **`depth`**: How deep (or how far it sticks out from the desk) the catcher should be. Important for ensuring that it does not hit the wall behind the desk.
*   **`slotGap`**:  The spacing between each cable slot.
*   **`slotDiameter`**:  The diameter of the holes that hold the USB cables.
*   **`slotRecess`**: How far into the catcher body the slots should be recessed.
*   **`tabHeight`**: The thickness of the tabs that hook over the top and bottom of the desk.
*   **`tabWidth`**:  How wide each tab should be.
*    **`tabLength`**: How far the tabs should extend behind the main body

I'm currently using a simple loop to place the cable slots but I'd be really grateful if the AI could make sure it doesn't create a slot which is very close to the edges of the catcher. Also, it would be good if the design could be produced entirely within a single file, without relying on any libraries.

The design is fairly basic, so I don't imagine needing anything too complicated, but I need it to be reliable and easy to print.

[Assistant]
SimpleUSBCableCatcher4.scad:
```
// How thick your desk is.
deskh = 18.5; //
//How wide you want the cable catcher to be
fullWidth = 160;
//How deep (ensure it fits between your desk and the wall!)
depth = 8;
//The gap between usb cable slots
slotGap=20;
//The diameter of the slot to hold the usb cable
slotDiameter = 5;
//How far to recess the slot.
slotRecess=2;
//Thickness of the tabs which hold the USB catcher to the desk
tabHeight = 3.5;
// Tab width
tabWidth = 20;
//Tab length
tabLength = 25;
module cableCatcher() {
difference()
{
	cube([fullWidth, depth, deskh+2*tabHeight]);
		for (z = [tabWidth+(slotGap/2) : slotGap : fullWidth-(tabWidth+(slotGap/2))] )
		{
   			  translate([z, slotRecess,-5]) cylinder(r=slotDiameter/2.0, h=40);
    		}
}
 translate([0,-tabLength,0]) 	cube([tabWidth, tabLength,tabHeight]);
 translate([0,-tabLength,deskh+tabHeight]) cube([tabWidth, tabLength, tabHeight]);
 translate([fullWidth-tabWidth,-tabLength,0]) 	cube([tabWidth, tabLength, tabHeight]);
 translate([fullWidth-tabWidth,-tabLength,deskh+tabHeight]) cube([tabWidth, tabLength, tabHeight]);
}
cableCatcher();

```


[User]
Okay, so I'm looking to design a customizable Byzantine chainmaille weave for 3D printing, and I have a basic understanding of OpenSCAD. I found this existing code, `Byz_Customizer.scad`, that gets pretty close to what I want, but it has some limitations I'd like to address.

Here's what I'm looking for in a parametric OpenSCAD file:

**Core Functionality (based on the provided code):**

*   **Byzantine Weave:** The design should generate a chainmaille structure using the Byzantine weave pattern, as seen in the example.
*   **Ring Geometry:** The rings should be created using `rotate_extrude` and `circle` for a circular cross-section, like the existing code.
*   **Angled Pairs:** The function `angledPair` seems correct and could be used to create the interlocking angled pairs of rings.
*   **Middle Links:** The design should incorporate the middle links, where you interlock another ring through a pair of rings. This functionality is mostly present in the original code.

**Customization Parameters (These are essential!):**

*   `numSegments`: The number of segments in the overall chain.  A segment is the repeating unit of the weave.
*   `numMiddleLinks`: The number of middle rings added within each segment.
*   `wireDiameter`: The diameter of the wire used for the rings (in mm).
*   `ringAR`: The aspect ratio of the rings (inner diameter / wire diameter).  I'm using `ringAR` instead of inner diameter because of its usage in the original code, but I also might need an option to specify an inner diameter.
*   `smoothness`: The smoothness of the ring (for example, number of faces used to create the circle extrusion), with higher numbers resulting in smoother but more computationally intensive renders.

**Desired Enhancements/Modifications:**

*   **Clearer Parameterization:** I'd like to make it easier to understand how the parameters affect the design. The positioning and orientation logic in the example isn't very clear.
*   **Option for Inner Diameter:** Instead of solely relying on `ringAR`, it would be helpful to be able to specify an inner diameter directly. If both `innerDiameter` and `ringAR` are defined, the `innerDiameter` should take precedence. If only `ringAR` is defined the code should still work. This should not be required, but an option.
*   **Symmetrical Middle Links:** The original code's middle link positioning is slightly off when `numMiddleLinks` is even, it would be great if those could be more symmetrical with respect to the parent rings in the angled pair.
*   **Improved Documentation:** Please include comments explaining what each part of the code does, especially the calculations for offsets and rotations.
*   **Unit Handling**: All dimensions should be assumed to be in millimeters.

**Libraries:**

I don't need any external libraries at this time. I prefer to stick to standard OpenSCAD primitives.

**Summary**

I'd like a modular and well-documented OpenSCAD file that allows me to easily customize the length, ring size, and number of middle links in my Byzantine chain. The existing code is a good starting point, but the design should be cleaned up and made more flexible. The main goal is to make it easy to adjust the weave to match specific 3D printing and design requirements.

[Assistant]
Byz_Customizer.scad:
```
// preview[view:south, tilt:top]

numSegments = 4;
numMiddleLinks = 2;
// Diameter of ring in mm
wireDiameter = 2;
// Aspect ratio of the ring (Inner diameter/Wire diameter)
// Ring AR range for Byzantine is greater than 3.2.  For a different number of middle links, larger ARs are needed to fit.
ringAR = 4;

// Smoothness factor (larger = smoother, but longer to generate stl)
smoothness = 20;

for (i=[1:numSegments])
{
	rotate([(i%2)*90, 0, 0])
	translate([i*(ringAR*wireDiameter*cos(25)-wireDiameter+wireDiameter*ringAR),0,0])
	union()
	{
		translate([-wireDiameter/2,0,0])
		angledPair(25);
		rotate([90,180,0])
		angledPair(25);
		translate([ringAR*wireDiameter-wireDiameter,0,0])
		rotate([90,0,0])
		union()
		{
			for (j=[1:numMiddleLinks])
			{
				if (numMiddleLinks%2==1)
				{
					translate([0,0,pow(-1,j)*round((j-1)/2)*wireDiameter])
					ring(wireDiameter,ringAR);
				}
				else
				{
					translate([0,0,pow(-1,j%2)*(round(j/2)*wireDiameter-wireDiameter*49/100)])
					ring(wireDiameter,ringAR);
				}
			}
		}
	}
}

module angledPair(angle)
{
	union()
	{
		translate([0,0,(wireDiameter+wireDiameter*ringAR)*sin(angle)/2+wireDiameter/2])
		rotate([0,angle,0])
		ring(wireDiameter,ringAR);

		translate([0,0,-(wireDiameter+wireDiameter*ringAR)*sin(angle)/2-wireDiameter/2])
		rotate([0,-angle,0])
		ring(wireDiameter,ringAR);
	}
}

module ring(wd, ar)
{
	rotate_extrude(convexity = 10, $fn=smoothness)
	translate([ar*wd/2+wd/2, 0, 0])
	circle(r = wd/2, $fn=smoothness);
}
```


[User]
Okay, I'm planning a Vibrobot workshop, and I need to 3D print some eccentric weights for the little toy motors. I've got a basic design in mind, but I'd really like to have a more flexible, parametric OpenSCAD file that I can tweak to fit different motors in the future.

Here's what I'm thinking, based on what I've already put together:

**Core Functionality:**

1.  **Shaft Hole:**  I need a hole through the center to attach to the motor shaft. This needs to be defined by a `shaftDiameter` parameter, and the hole should go all the way through the part with some extra length to allow for slight differences in motor shafts.

2.  **Weight:** I'll use a cylinder off to one side of the shaft for the main eccentric weight. This cylinder needs a `weightDiameter` parameter to control its size, and it should have a height of around 5 mm.

3.  **Arm:**  This connects the center hole and the weight cylinder. It needs an `armLength` parameter. It should be around 4mm thick and 4mm high

4.  **Mounting Platform:** I also have a base on the design to allow the eccentric to be attached flush to the motor. This should be a cylinder with a small amount of height to prevent the eccentric weight from rubbing on the motor.

5.  **Center Support:** I want to add some center support to connect the cylinder to the motor attachment and strengthen the print.

**Key Parameters:**

I need to be able to control at least these parameters:

*   `shaftDiameter`: Diameter of the hole for the motor shaft (in mm).
*   `weightDiameter`: Diameter of the eccentric weight cylinder (in mm).
*   `armLength`: Length of the arm connecting the shaft hole and the weight (in mm).
*   `baseHeight`: Height of the cylinder mount. Should be around 4mm
*   `weightHeight`: Height of the weight. Should be around 5mm
*    `armThickness` Thickness of the arm (4mm default)
*   `armHeight` Height of the arm (4mm default)
*   `centerSupportR` Radius of the center support. Should be around 3mm

**Output**

*   The output should be a single, solid object.
*   I'd like the part to be printable without support.

I'd like it all in one `.scad` file with all the parameters at the top. Could you help me generate an OpenSCAD file for this, please?

[Assistant]
eccentric_weight.scad:
```
/*
	Parametric Eccentric Weight for Vibrobot
	by Kevin Osborn
*/
//Shaft Diameter in mm
shaftdiameter = 1.0;
//Weight Diameter in mm
weightdiameter =12;
//Arm Length in mm
armLength = 12;

/* [hidden] */
shaftR = shaftdiameter/2;
weightR = weightdiameter/2;
$fn=50;

union(){
difference(){
cylinder(r1=5,r2=5,h=4);
cylinder(r1=shaftR,r2=shaftR,h=15);
translate([3,-7,0])cube([14,14,5]);
}
translate([-armLength-2,-2,0])cube([armLength,4,4]);
translate([-(armLength+weightR),0,0])cylinder(r1=weightR,r2=weightR,h=5);
difference(){
translate([0,0,3.9])cylinder(r1=3,r2=3,h=4);
cylinder(r1=shaftR,r2=shaftR,h=15);
}
}
```


[User]
Okay, I'm looking to create a customizable 3D model for a chainmaille weave called "Power Line". I've already got some basic code (pasted below), but it's a bit clunky and I'd like it to be more robust and easier to modify.

Here's what I'm aiming for:

**Basic Design:**

The weave is made of interconnected rings. Each "segment" of the design consists of four rings: a central ring and a pair of rings above and below, each attached at an angle. There are also pairs of rings that bridge the gap between the middle ring of one segment to the middle ring of the next segment. Visually, these bridge rings are essentially a copy of the center ring in a segment, but they are rotated such that they connect the first and second center ring segments.

**Customization Parameters:**

I need the following parameters to be adjustable:

*   **`numSegments`:**  The number of "segments" in the chainmaille length (like in my code). This is essentially the total number of repetitions along the length of the generated weave.
*   **`wireDiameter`:** The thickness (diameter) of the wire used to form the rings. This should be in millimeters.
*   **`ringAR`:** The aspect ratio of the ring (Inner diameter / Wire diameter). This has a practical minimum of about 5.2 but should work correctly in code starting from 6.0. The current code already accounts for this.
*   **`smoothness`:** A parameter to control the fineness of the circular shapes when rendering the rings. A higher value means smoother circles but potentially longer rendering times. I think the current code is working well using `$fn`.

**Desired Features & Improvements:**

*   **Parametric Design:** All dimensions should be derived from the input parameters. I'm particularly concerned about the spacing and angle calculations; I'd like to make sure they're as clear and reliable as possible.
*   **Modular Structure:** The code should be well-organized, with functions or modules for creating individual components of the design (e.g., a single ring, a connected pair, a segment). My current code tries to do this but can probably be improved.
*   **Clear Comments:** It'd be a great help to have the code well-commented to explain the different parts, particularly the parts involving math (if you change them at all).
*   **No Fusing:** The design should generate individual rings without any fusing/merging of faces between them until I want to do that. My current code *is* fusing the individual ring components because it's a union().
*   **Render Speed:** While not a primary concern, any steps to make the rendering process more efficient are welcome, if possible.
*   **No external libraries.** I do not want to rely on external libraries like MCAD, BOSL, BOSL2, dotSCAD, NopSCADlib, or BOLTS.

**Current Code (for Reference):**

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

numSegments = 4;
// Diameter of ring in mm
wireDiameter = 2;
// Aspect ratio of the ring (Inner diameter/Wire diameter)
// Ring AR range for Power Line is greater than 5.2 realistically. However, this does not translate mathematically due to an orbital connection. Fusing begins in the script around an AR of 6.0.
ringAR = 6.2;

// Smoothness factor (larger = smoother, but longer to generate stl)
smoothness = 20;

for (i=[1:numSegments])
{
	translate([i*(ringAR*wireDiameter*2-wireDiameter*2),0,0])
	rotate([0,0,35])
	union()
	{
		ring(wireDiameter, ringAR);
		rotate([0,90,0])
		separatedPair(sqrt(pow(3*wireDiameter+ringAR*wireDiameter,2)/4+pow(ringAR*wireDiameter,2)/4)+wireDiameter/2,wireDiameter,ringAR);
		rotate([90+35,90,0])
		translate([0,wireDiameter*ringAR-wireDiameter*3/4,-ringAR*wireDiameter/4-wireDiameter/3.8])
		ring(wireDiameter, ringAR);
		rotate([-(90+35),-90,0])
		translate([0,-(wireDiameter*ringAR-wireDiameter*3/4),-ringAR*wireDiameter/4-wireDiameter/3.8])
		ring(wireDiameter, ringAR);
	}
}

module separatedPair(dist, wd, ar)
{
	union()
	{
		translate([0,0,dist/2])
		ring(wd,ar);
		translate([0,0,-dist/2])
		ring(wd,ar);
	}
}

module angledPair(angle, wd, ar)
{
	union()
	{
		translate([0,0,(wd+wd*ar)*sin(angle)/2+wd/2])
		rotate([0,angle,0])
		ring(wd,ar);

		translate([0,0,-(wd+wd*ar)*sin(angle)/2-wd/2])
		rotate([0,-angle,0])
		ring(wd,ar);
	}
}

module ring(wd, ar)
{
	rotate_extrude(convexity = 10, $fn=smoothness)
	translate([ar*wd/2+wd/2, 0, 0])
	circle(r = wd/2, $fn=smoothness);
}
```

Can you provide a new OpenSCAD file based on these requirements? I'd like to use this to generate STL files for 3D printing, so accuracy is paramount.

[Assistant]
PowerLine_Customizer.scad:
```
// preview[view:south, tilt:top]

numSegments = 4;
// Diameter of ring in mm
wireDiameter = 2;
// Aspect ratio of the ring (Inner diameter/Wire diameter)
// Ring AR range for Power Line is greater than 5.2 realistically. However, this does not translate mathematically due to an orbital connection. Fusing begins in the script around an AR of 6.0.
ringAR = 6.2;

// Smoothness factor (larger = smoother, but longer to generate stl)
smoothness = 20;

for (i=[1:numSegments])
{
	translate([i*(ringAR*wireDiameter*2-wireDiameter*2),0,0])
	rotate([0,0,35])
	union()
	{
		ring(wireDiameter, ringAR);
		rotate([0,90,0])
		separatedPair(sqrt(pow(3*wireDiameter+ringAR*wireDiameter,2)/4+pow(ringAR*wireDiameter,2)/4)+wireDiameter/2,wireDiameter,ringAR);
		rotate([90+35,90,0])
		translate([0,wireDiameter*ringAR-wireDiameter*3/4,-ringAR*wireDiameter/4-wireDiameter/3.8])
		ring(wireDiameter, ringAR);
		rotate([-(90+35),-90,0])
		translate([0,-(wireDiameter*ringAR-wireDiameter*3/4),-ringAR*wireDiameter/4-wireDiameter/3.8])
		ring(wireDiameter, ringAR);
	}
}

module separatedPair(dist, wd, ar)
{
	union()
	{
		translate([0,0,dist/2])
		ring(wd,ar);
		translate([0,0,-dist/2])
		ring(wd,ar);
	}
}

module angledPair(angle, wd, ar)
{
	union()
	{
		translate([0,0,(wd+wd*ar)*sin(angle)/2+wd/2])
		rotate([0,angle,0])
		ring(wd,ar);

		translate([0,0,-(wd+wd*ar)*sin(angle)/2-wd/2])
		rotate([0,-angle,0])
		ring(wd,ar);
	}
}

module ring(wd, ar)
{
	rotate_extrude(convexity = 10, $fn=smoothness)
	translate([ar*wd/2+wd/2, 0, 0])
	circle(r = wd/2, $fn=smoothness);
}
```


[User]
Okay, I'm looking to create a slotted disk, similar to the one in the provided OpenSCAD code, but I want it to be more flexible and customizable. Here's what I need:

**Core Functionality:**

*   **Slotted Disk:** The main element is a circular disk with a set of arc-shaped slots cut out of it. These slots will be used for timing or triggering mechanisms, likely involving sensors.
*   **Hub:** The disk needs a central hub with a bore (hole) for mounting onto a shaft or axle.

**Desired Parameters:**

I want to be able to control all of the following through variables:

*   **Disk Properties:**
    *   `disk_radius`: The outer radius of the disk.
    *   `disk_height`: The thickness/height of the disk.
*   **Hub Properties:**
    *   `hub_height`: The height of the hub.
    *   `hub_diameter`: The outer diameter of the hub.
    *   `hub_bore_diameter`: The diameter of the hole in the center of the hub.
*   **Slot Properties (Variable Number of Slots):**
    *   `slot_number`: The number of slots in the disk.
    *   `slot_inside_radii`: A list of values representing the inner radius of each slot. This should be a list of length `slot_number`.
    *   `slot_outside_radii`: A list of values representing the outer radius of each slot. Also a list of length `slot_number`.
    *   `slot_start_angles`: A list of values indicating the start angle (in degrees) of each slot. Length `slot_number`.
    *   `slot_end_angles`: A list of values indicating the end angle (in degrees) of each slot. Length `slot_number`.

**Additional Requirements:**

*   **Parametric:** The design should be entirely parametric, meaning changing any of the variables mentioned above should change the generated model.
*   **Clean Boolean Operations:** The code should use efficient boolean operations (e.g., difference, union, intersection) to create the disk, hub, and slots. No manual positioning calculations unless absolutely necessary.
*   **No Hardcoded values:** All numeric values should be controlled with variables.
*   **OpenSCAD:** The design should be implemented in OpenSCAD.
*   **Libraries:** I'd prefer to keep things simple so I'd like to avoid using libraries like MCAD or BOSL if possible, unless they provide a significant benefit that isn't easy to implement without them. If they are needed, please explain *why* they are needed, or why they would make things significantly better.
*   **Smooth curves:** I'd like to have a higher number of facets by default (i.e. $fn) to have smoother curves; this can be easily adjusted as needed.

**Essentially:**
I want a robust, customizable version of the provided design, ready for generating disks with a variety of slot configurations. Please provide a complete OpenSCAD file that I can copy and paste, and also include comments in the code explaining how it works, especially the logic around creating the arc slots. I do not need any of the code you see below, as I already have that, and am looking for an improvement on that code.

[Assistant]
slottedDisk.scad:
```
// Slotted disk for use in controlling the timing
// of solenoid motors (or whatever else).
// This code is released to the Public Domain.
// Attribution would be nice but is not essential.
// Matt Moses 2013

/* [Slots] */
slot_number = 4;
slot_inside_radii = [10, 14, 18, 22];
slot_outside_radii = [11.5, 15.5, 19.5, 23.5];
slot_start_angles = [0, 90, 180, 270];
slot_end_angles = [180, 270, 360, 450];

/* [Disk] */
disk_height = 4;
disk_radius = 26;

/* [Hub] */
hub_height = 8;
hub_diameter = 10;
hub_bore_diameter = 5;

/* [Hidden] */
// facet number. higher = smoother surfaces
$fn = 100;

slottedDiskWithHub(slot_number, slot_inside_radii, slot_outside_radii,
					slot_start_angles, slot_end_angles,
					disk_height, disk_radius, hub_height, hub_diameter, hub_bore_diameter);

// This makes a slotted disk with a hub and bore
module slottedDiskWithHub(n,r_in,r_out,a_start,a_end,d_height,disk_outside_rad,hub_height,hub_diameter,hub_bore_diameter)
{
	difference(){
		union(){
			slottedDisk(n,r_in,r_out,a_start, a_end, d_height, disk_outside_rad);
			cylinder(r = hub_diameter/2, h=hub_height, center=false);
		}
		translate([0,0,-0.1*hub_height])
		cylinder(r = hub_bore_diameter/2, h=1.2*hub_height, center=false);
	}
}

// This makes a disk with arc-shaped holes in  it
module slottedDisk(n,r_in, r_out, a_start, a_end, disk_height, disk_r)
{

	difference(){
		cylinder(r = disk_r, h = disk_height, center=false);
		for (i=[0:n-1])
		{
			translate([0,0,-0.1*disk_height])
			arc(r_in[i], r_out[i], 1.2*disk_height, a_start[i], a_end[i]);
		}
	}
}

// This makes an arc shape
module arc(r_in, r_out, arc_height, angle_start, angle_end)
{
	intersection(){
	difference(){
		cylinder(r = r_out, h = arc_height, center = false);
		translate([0,0,-0.1*arc_height])
		cylinder(r = r_in, h = 1.2 * arc_height, center = false);

	}
	translate([0,0,-0.1*arc_height])
	wedge(r_out/0.86, 1.2*arc_height, angle_start, angle_end);
	}
}

// This makes a wedge shape for use in boolean operations
// to make arcs.
// The minimum distance from the origin to an outside edge of
// the wedge is sqrt(3)/2 * rw = 0.866 * rw
// (angle_end - angle_start) must be more than 0 and less than 360
module wedge(rw, wedge_height, angle_start, angle_end)
{
	dt = (angle_end - angle_start)/6;
	rotate([0,0,angle_start])
	linear_extrude(height = wedge_height, center = false){
	polygon( points = [ [0,0], [rw,0],
	[rw*cos(dt), rw*sin(dt)],
	[rw*cos(2*dt), rw*sin(2*dt)],
	[rw*cos(3*dt), rw*sin(3*dt)],
	[rw*cos(4*dt), rw*sin(4*dt)],
	[rw*cos(5*dt), rw*sin(5*dt)],
	[rw*cos(6*dt), rw*sin(6*dt)]]);
	}
}

```


[User]
Okay, I'm looking to create an adjustable shim for various woodworking and leveling tasks, and I'd like to use OpenSCAD to generate the models. I need a parametric design that I can easily adjust for different projects.

Essentially, I want a wedge-shaped shim that can be adjusted in height using a bolt and nut. The basic design is as follows:

*   **Shape:** It should be a rectangular block that's cut diagonally to form a wedge.
*   **Adjustment:**  A slot running most of the length should accommodate a hex nut and bolt. Tightening the bolt will cause the two halves of the shim to slide and thus increase the overall height. This means a slot will need to be carved out to contain the bolt and nut.
*   **Attachment:** I need the option of having screw holes for attaching the shim to a work surface. I'd like to be able to select 0, 2, or 4 screw holes, and to specify whether to use a "bugle" head (countersunk) or "mushroom" head (pan head) type screws.
*   **Number:** I'd like to specify whether I want one or two of these to be printed at once on the build plate. If printing two, I want the option to have them arranged side-by-side or end-to-end.

Here are the specific parameters I'd like to be able to control:

*   **`width`**: The width of the shim's cross-section (e.g., 30mm).
*   **`length`**: The length of the shim, which also determines the required bolt length for full adjustability. I'd like a reference comment in the code explaining the relationship between bolt length and the `length` parameter (e.g., 52mm = 2", 39mm = 1.5", 26mm = 1").
*   **`min_height`**: The minimum height of the shim at its thinnest point (e.g., 12mm). The adjustable height can go to about 125% of this value.
*   **`attachment_holes`**: The number of attachment screw holes (0, 2, or 4).
*   **`attachment_head_type`**: The type of screw head for attachment ("bugle" or "mushroom").

And here are the more advanced parameters I'd like to be able to control:

*   **`slot_width`**: The width of the slot for the hex nut (e.g., 8.25mm for a #6 US nut, 7.4mm for M4).
*   **`slot_depth`**: The depth of the hex nut slot, which should accommodate the height of the nut or bolt head, whichever is greater and maybe more if the gradient angle is steep.
*   **`slot_height_ratio`**:  The ratio of the slot height to the minimum height (e.g., 0.8).
*   **`bolt_width`**: The width of the bolt (e.g., 4.2mm).
*   **`bolt_slot_height_ratio`**: The ratio of the bolt slot height to the slot height (e.g., 0.7).
*   **`center_hole_ratio_w`**: The ratio of the width of the center hole used to secure the shim to the overall width (e.g., 0.65).
*    **`center_hole_ratio_l`**: The ratio of the length of the center hole to the overall length (e.g. 0.42).
*   **`number_on_plate`**:  The number of shims to print (1 or 2).
*   **`multiple_arrangement`**: The arrangement if printing two shims ("sidebyside" or "endtoend").
*   **`attachment_shaft_width`**:  The width of the screw shaft for attachment holes (e.g., 3.8mm for #8, 4.8 for #10).
*   **`attachment_taper_height`**:  The taper height of the screw head (bugle head).
*   **`attachment_taper_top_diameter`**:  The top diameter of the taper of the screw head (bugle head); for example, #8 woodcraft screws use 8.2, common wood screws closer to 9.0, and #10 screws use 9.8.

I'd like the OpenSCAD file to:

*   Have the main adjustable shim logic in a module called `adjustable_shim()`.
*   Have a module for the attachment screw holes named `attachment_screws()`.
*   Have a module for each individual attachment hole called `attachment_hole()`, and a separate module for each type of hole: `attachment_hole_bugle()` and `attachment_hole_mushroom()`.
*   If multiple shims are being printed, place them appropriately on the build plate.
*   Include comments to explain the code and its parameters.
*   Use the `sqrt()` and `atan()` math functions.
*   Render with a high `convexity` value of 5, such as `render( convexity = 5 )`.

Could you generate this OpenSCAD file for me?  I'm not sure if I will need to include any libraries, but if you choose to use one, please let me know which one you used.

[Assistant]
adjustable-shim-v3.scad:
```
// Width of cross-section
width = 30;
// Length - bolt will need to be this long. 52=2" 39=1.5 26=1"
length = 39;
// Minimum height - by tightening bolt, can increase up to about 125% of this value
min_height = 12;
// Attachment screw holes (to secure wedge to work)
attachment_holes = 2; // [0,2,4]
// Attachment screw head type (mushroom=pan head)
attachment_head_type = "bugle"; // [bugle,mushroom]

/* [Advanced] */
// Slot width (should fit flat to flat dimension of hex nut) - 8.2mm for #6 (US), 7.4mm for M4
slot_width = 8.25;
// Slot depth - must accommodate greater of bolt head height and nut height. May need to be greater for steeper gradient
slot_depth = 2.75;
// Ratio of slot height to minimum height
slot_height_ratio = 0.8;
// Bolt width
bolt_width = 4.2;
// Bolt slot height as ratio of slot height
bolt_slot_height_ratio = 0.7;
// Ratio of center hole width to overall
center_hole_ratio_w = 0.65;
// Ratio of center hole length to overall
center_hole_ratio_l = 0.42;
// Number on build plate
number_on_plate = 1; // [1,2]
// Arrangement of multiple pieces on build plate
multiple_arrangement = "sidebyside"; // [sidebyside,endtoend]
// Attachment hole screw shaft width; 3.8 for #8, 4.8 for #10
attachment_shaft_width = 3.8;
// Attachment hole taper height for bugle head
attachment_taper_height = 4;
// Attachment hole taper top diameter; #8 woodcraft screws use 8.2, common wood screws closer to 9.0, #10 9.8
attachment_taper_top_diameter = 9.0;

/* [Hidden] */
hypotenuse = sqrt(length*length + min_height*min_height);

adjustable_shim();

if (number_on_plate > 1)
{
  if (multiple_arrangement == "sidebyside")
  {
	translate([-2,-hypotenuse,0]) rotate([0,0,180]) adjustable_shim();
  }
  if (multiple_arrangement == "endtoend")
  {
	translate([width,-2.05*hypotenuse,0]) rotate([0,0,180]) adjustable_shim();
  }
}

// Produce a single shim, printing with hypotenuse down
module adjustable_shim()
{
  assign( angle = atan(min_height/length), slot_height = min_height * slot_height_ratio ) render( convexity = 5 )
  {
    rotate([180-angle,0,0])
    difference()
    {
	  // Basic rectangle
	  cube(size=[width,length,min_height], center=false);
	  // Subtract half to make wedge
     rotate([angle,0,0]) cube(size=[width,hypotenuse,min_height], center=false);
	  // Subtract larger slot from end
	  translate([(width-slot_width)/2,length-slot_depth,min_height*(1.0-slot_height_ratio)/2]) cube(size=[slot_width, slot_depth, slot_height], center=false);
	  // Subtract bolt (via) slot
	  translate([(width-bolt_width)/2,0,(min_height-bolt_slot_height_ratio * slot_height)/2]) cube(size=[bolt_width, length, bolt_slot_height_ratio * slot_height], center=false);
	  // Create center hole so we can secure fasteners through this
	  translate([(1-center_hole_ratio_w)*width/2,(1-center_hole_ratio_l)*length/2,0]) cube(size=[width*center_hole_ratio_w, length*center_hole_ratio_l, min_height], center=false);
	  // Optional attachment screw holes
	  attachment_screws();
    }
  }
}

// Generate 2 or 4 attachment screw holes
module attachment_screws()
{
  if (attachment_holes >= 2) assign( margin_side = width * (1.0 - center_hole_ratio_w), margin_end = length * (1.0 - center_hole_ratio_l) )
  {
	 translate( [margin_side / 2, length - margin_end / 4, 0 ] ) attachment_hole();
	 translate( [width - margin_side / 2, length - margin_end / 4, 0 ] ) attachment_hole();
	 if (attachment_holes >= 4)
    {
	 	// At the thin end, mushroom heads will be on a slant
		 translate( [margin_side / 2, margin_end / 2, 0] ) attachment_hole();
		 translate( [width - margin_side / 2, margin_end / 2, 0] ) attachment_hole();
    }
  }
}

// Generate a single untranslated attachment hole
module attachment_hole()
{
  if (attachment_head_type == "bugle")
  {
	attachment_hole_bugle();
  }
  if (attachment_head_type == "mushroom")
  {
	attachment_hole_mushroom();
  }
}

// Taper head (bugle) attachment hole
module attachment_hole_bugle()
{
  union()
  {
   attachment_hole_mushroom();
	cylinder( r1 = attachment_shaft_width / 2, r2 = attachment_taper_top_diameter / 2, h = attachment_taper_height, $fn = 72 );
  }
}

// Pan head (mushroom) attachment hole
module attachment_hole_mushroom()
{
  union()
  {
    cylinder( h = min_height, r = attachment_shaft_width / 2, center = false, $fn = 72 );
    translate([0,0,attachment_taper_height]) cylinder(h = min_height, r = attachment_taper_top_diameter / 2, center = false, $fn = 72 );
  }
}

```


[User]
Okay, I'm looking to design a parametric horn antenna for microwave applications, and I'd like to use OpenSCAD to do it. I've found an existing design that's close to what I want, but I need something more flexible.

The core idea is to create a pyramidal horn antenna with a WR flange. The current design uses a lookup table to handle the WR flange dimensions, and I need to keep that concept in place. The WR flange codes range from 1 (WR112) to 8 (WR28). I also need to maintain the separate control for the wall thickness of the horn, flange thickness, and overall antenna length. The current file uses a `multin` parameter to control the length of the horn based on multiples of the wavelength and a `waveadd` parameter to add extra wavequide in units of half-wavelengths before the horn flare begins. I want to keep these parameters, too.

Here's a breakdown of the parameters I need to be able to control:

*   **`wrcode`**: Integer, selects the WR flange size (1-8).  This should drive all the flange dimensions. Should still use a lookup table as in the provided SCAD.
*   **`wall`**: Float, the thickness of the horn's walls, in mm.
*   **`flanged`**: Float, the thickness of the flange, in mm.
*   **`multin`**: Integer, multiplier for the horn length relative to the wavelength (lambda * n).
*    **`waveadd`**: Integer, number of additional half-wavelengths of rectangular waveguide added before the horn flare.

The existing code uses a lot of pre-calculated values based on the `wrcode` and then calculates the `r0` (length to pyramidal joint point), `Asize` (size in the H plane), and `Bsize` (size in the E plane). I would like to keep the horn design based on these parameters, but in a way that is easier to understand. I'd also like the `Bsize` calculation to be done using the formula rather than with hard-coded values.

The flange needs mounting holes. The positions and size of these holes are dependent on the WR flange. I would like to retain these holes.

The existing code also uses `$fn=36` for detail. I want to be able to control this using a variable. So, add a new parameter:

*  **`faces`**: Integer,  the number of faces used for rounded surfaces.

In summary, I'd like the design to:

1.  Be fully parametric, based on the parameters listed above.
2.  Retain the lookup table for WR flange sizes.
3.  Keep the horn calculations, specifically the calculations for `r0`, `Asize`, and `Bsize`
4.  Include mounting holes on the flange, positioned based on the WR size.
5. Allow control over the mesh density for curved surfaces, using a `faces` parameter.

I am not looking for something that needs additional libraries, and ideally would prefer that the code is easy to understand.

[Assistant]
hornantennaflanged.scad:
```

// *************************************************************
// (C) 2013 Dipl.Ing. Rolf-Dieter Klein, Munich Germany
// OpenSource -- would be great to keep my name as reference
// HORN ANTENNA for Microwaves -- use copper to metallize
// or use for metal casting !!
// www.rdklein.de
// report error, problems to rdklein@rdklein.de
// *************************************************************
// WR Flange Code
wrcode = 8; // [1:WR112,2:WR90,3:WR75,4:WR62,5:WR51,6:WR42,7:WR34,8:WR28]
//
// overall wall thickness in mm
wall = 2.58; //
// flange thickness
flanged = 5; // flange thickness
//
// Antennalenght multiplier R0 = Lambda * n
multin = 2; // default 2Lambda

// addon in lamba/2 units flanged is subtracted ! !
waveadd = 1;

// standard dimension tables
// WR cannot be entered directly due to openscad variable restrictions
// a case of if for assignment cannot be used, index is easier for this.
// WR 112 7.05-10.00 GHz
// WR 90  8.20-12.40 GHz
// WR 75  10.00-15.00 GHz
// WR 62  12.49-18.00 GHz
// WR 51  15.00-22.00 GHz
// WR 42  18.00-26.50 GHz
// WR 34  22.00-33.00 GHz
// WR 28  26.50-40.00 GHz
//
// do not change:
wrtab = [0,112,90,75,62,51,42,34,28]*1.0;
// do not change:
atab = [0,47.9,41.4,38.3,33.3,31.0,22.41,22.1,19.05]*1.0;
// do not change:
etab = [0,18.72,16.26,14.25,12.14,11.25,8.51,7.9,6.73]*1.0;
// do not change:
ftab = [0,17.17,15.49,13.21,12.63,10.29,8.13,7.5,6.34]*1.0;
// do not change:
drilltab=[0,4.3,4.3,4.1,4.1,4.1,3.1,3.1,3.0]*1.0;
// dann werte zuweisen
// ueber index
sizea = atab[wrcode]; // square size of flange
sizee = etab[wrcode]; // holes from smaller
sizef = ftab[wrcode]; // holes from larger
drill = drilltab[wrcode]/2.0; // drill for flange mounting
wr = wrtab[wrcode];
lquat = wr/20.0*2.54; // lamba 4 in mm
//

// faces for precision
$fn=36; // faces for precision
//
// *********** FLANGE ****************
// Draw A Flange with mounting holes
// now with separate thickness.
difference() {
 difference() {
 	intersection() {

		cube([sizea,sizea,flanged],center=true);
		rotate([0,0,45]) cube([sizea*1.4142*0.9,sizea*1.4142*0.9,flanged],center=true);
	}
	cube([lquat,lquat*2,wall*2],center=true);
 }
 translate([-sizee,sizef,0]) cylinder(h=flanged*2,r=drill,center=true);
 translate([sizee,sizef,0]) cylinder(h=flanged*2,r=drill,center=true);
 translate([-sizee,-sizef,0]) cylinder(h=flanged*2,r=drill,center=true);
 translate([sizee,-sizef,0]) cylinder(h=flanged*2,r=drill,center=true);
}
//
// ***** HORN ANTENNA *****
// Pyramidal Horn
// r0 = length to pyramidal joint point
//
r0 = multin * lquat * 4; // lambda * 4 * multiplier for r0
Asize = sqrt(3*lquat*4*r0); // Size in H plane direction
//
// *** if preferred Bsize = sqrt(2*lquat*4*r0); // Size in E plane direction
//
a = lquat*2; // simpler for calc below
b = lquat;
// ********* rh and re now the base... one can be choosen
// optimal horn is for re=rh
//
Bsize = 1/2*(b + sqrt(b*b+(8*Asize*(Asize-a)/3) ));
//
echo(r0);
echo(Asize);
//
lh = sqrt(r0*r0+(Asize*Asize)/4);
rh = Asize*( (Asize- a)/(3*lquat*4));

// rh = (Asize- a)*sqrt((lh/Asize)-1/4);
// le = sqrt(r0*r0+(Bsize*Bsize)/4);
// re = (Bsize- b)*sqrt((le/Bsize)-1/4);
//

rh1 = rh * 1.00001; // for boolean problems to be solved
offset1 = -0.001+0.0;

//
wa1= wall;
// wall thickness not alongside, but if needed:
// alpha = atan(Asize/(2*r0));
// wa1 = wall/cos(alpha);
// echo("alpha",alpha,"walpha=",wa1);
//
// Outer Polygon
 difference() {
translate([0,0,-flanged/2+lquat*2*waveadd]) polyhedron(
  points=[ [Bsize/2+wa1,Asize/2+wa1,rh],[Bsize/2+wa1,-Asize/2-wa1,rh],[-Bsize/2-wa1,-Asize/2-wa1,rh],[-Bsize/2-wa1,Asize/2+wa1,rh], /// the four points at base
           [b/2+wa1,wa1+a/2,0],[b/2+wa1,-wa1-a/2,0],[-wa1-b/2,-wa1-a/2,0],[-wa1-b/2,wa1+a/2,0]  ],                                 // the apex point
  triangles=[ [0,1,4],[1,2,5],[2,3,6],[3,0,7],          // each triangle side
				   [1,5,4],[2,6,5],[3,7,6],[0,4,7],
              [1,0,3],[2,1,3],[4,5,7],[5,6,7]  ]                         // two triangles for square base
 );
// b in x a in y
// inner polygon for subtration...

translate([0,0,-flanged/2+lquat*2*waveadd]) polyhedron(
  points=[ [Bsize/2,Asize/2,rh1],[Bsize/2,-Asize/2,rh1],[-Bsize/2,-Asize/2,rh1],[-Bsize/2,Asize/2,rh1], /// the four points at base
           [b/2,a/2,offset1],[b/2,-a/2,offset1],[-b/2,-a/2,offset1],[-b/2,a/2,offset1]  ],                                 // the apex point
  triangles=[ [0,1,4],[1,2,5],[2,3,6],[3,0,7],          // each triangle side
				   [1,5,4],[2,6,5],[3,7,6],[0,4,7],
              [1,0,3],[2,1,3],[4,5,7],[5,6,7]  ]                         // two triangles for square
);
}
// Additional wavequide
difference() {
 translate([0,0,-flanged/2+lquat*waveadd]) cube([lquat+wall*2,lquat*2+wall*2,lquat*2*waveadd],center=true);
 translate([0,0,-flanged/2+lquat*waveadd]) cube([lquat,lquat*2,lquat*2*waveadd+wall*3],center=true);
}
//

```


[User]
Okay, I'm looking to design and 3D print a solar light enclosure. I have a basic idea of the shape and some dimensions, but I need a design that allows me to optimize the solar panel's angle for my specific location and easily house the existing electronics.

Here's what I'm thinking:

**Functionality:**

*   **Solar Panel Angle Adjustment:** The most important feature is that the solar panel mounting angle should be adjustable.  I'm using a website like the one in the description (http://solarelectricityhandbook.com/solar-angle-calculator.html) to figure out my optimal angle, so the design needs to make that parameter easily changeable.
*   **Electronics Housing:** The enclosure should have a designated space to hold the solar light electronics. I'll be taking the electronics out of a commercial light, so the current dimensions are important.
*   **Staking:** It would be great if the design includes an integrated stake that can be driven into the ground. The stake should also be at an angle to support the tilted panel.
*   **Protection:** I need a design that will protect the electronics and the solar panel from the weather.
*   **Easy Assembly:** It should be relatively easy to insert the electronics and the solar panel.

**Key Parameters (and their initial values):**

*   **`stakeAngle`**:  The angle of the stake and solar panel (and therefore the housing) relative to the ground. Start this at 30 degrees, but make it very easy to change.
*   **`height`**: The overall height of the main housing.  I'm starting at 20mm, but this should also be easily adjusted.
*   **`caseWidth`**: The width of the electronics housing space. This is 58mm.
*   **`caseLength`**: The length of the electronics housing space. This is 58mm.
*  **`panelWidth`**: The width of the solar panel, 50mm.
*  **`panelLength`**: The length of the solar panel, 45mm.
*   **`stakeWidth`**: The width of the stake that goes in the ground. This will be 10mm.
*   **`stakeLength`**: The length of the stake that goes in the ground, start at 100mm.
*   **`wallThickness`**: The thickness of the enclosure walls, 4mm.

**Desired Features of the OpenSCAD File:**

*   **Parametric Design:**  I need an OpenSCAD file where all the dimensions and angles above are easily modifiable.
*   **Clear Structure:** Please use comments and modular design, so it's easy for me to understand and modify.
*   **Use of `write.scad`:** I need the design to use the functions and features provided by the `write.scad` library that was used in the previous design.

**Specific Requests:**

1.  Can you generate an OpenSCAD file that incorporates these parameters and features?
2.  Make sure that the enclosure has a slightly recessed area to hold the solar panel.
3.  The stake needs to come out of the same angled face of the enclosure as the solar panel.
4. Can you confirm that the file uses the `write.scad` library?

I'd really appreciate it if you could provide this OpenSCAD design.

[Assistant]
solarLight.scad:
```
use <write.scad>

//adampaterson 2013

// Optimal Solar Angle
stakeAngle = 30;

// Height
height = 20;

// Electrics Width
caseWidth = 58;

// Electrics Length
caseLength = 58;

// Solar Panel Width
panelWidth = 50;

// Solar Panel Length
panelLength = 45;

//Stake Width
stakeWidth = 10;

// Stake Length
stakeLength = 100;

// Wall Thickness
wallThickness = 4;

width = caseWidth + (2 * wallThickness);
length = caseLength + (2 * wallThickness);

widthDiff = width - panelWidth;
lengthDiff = length - panelLength;

union(){
difference() {
	union() {
		//main rect. extrude
		cube([width,length,height]);
		//angle extrude
		rotate([stakeAngle,0,0] ) cube([width, sin(stakeAngle) * height, height / 			cos(stakeAngle)]);
	}

//main cutout, not window
translate([wallThickness, wallThickness, wallThickness])
	cube([width - (2 * wallThickness), length - (2 * wallThickness), height]);

//window cut-out
translate([widthDiff/2, lengthDiff / 2, -1])
	cube([panelWidth, panelLength, height]);

// angle extrude remove
translate([wallThickness, wallThickness, wallThickness])
	rotate([stakeAngle,0,0] )
		cube([width - (2 * wallThickness), sin(stakeAngle) * height, height / cos(stakeAngle)]);

//bottom triangle
translate([-1, -length, height])
	cube([width + 2,length,height]);

}
difference() {
	//stake extrude
		rotate([stakeAngle,0,0] ) cube([stakeWidth, stakeWidth, stakeLength]);
	// stake extrude remove
	translate([wallThickness, wallThickness, wallThickness])
		rotate([stakeAngle,0,0] )
			cube([stakeWidth, stakeWidth, stakeLength]);
	// hack remove
	translate([wallThickness, wallThickness, wallThickness])
		cube([width - (2 * wallThickness), length - (2 * wallThickness), height]);
}}
```


[User]
Okay, I'm looking to design a mount that adapts the mounting holes for an Azteeg X3 controller to fit the mounting holes for an Arduino Mega/RAMPS setup. I have two existing OpenSCAD files that accomplish this using hardcoded values, but I'd really like a parametric version.

The mount needs to have two main sets of standoffs:

1.  **X3 Controller Standoffs:** There are four of these, positioned to match the mounting holes on the X3 controller. These should be cylinders, and the height should be adjustable. I need to be able to specify the wall thickness of these standoffs, and the inner hole diameter. The X3 hole is approximately 3.8mm in diameter.
2.  **Arduino Mega Standoffs:**  There are four of these as well, positioned for the Arduino Mega mounting holes. These should be similar cylindrical standoffs, and I need to be able to adjust the height, wall thickness, and inner hole diameter.

In the existing designs I provided, the X3 mounting holes are at [0,0], [101.6,0], [101.6, 64.3], and [0,64.3]. The Arduino mounting holes are at [0,0], [81.5,0], [1,48], and [75,48]. It would be ideal if I could just pass these as a series of coordinates in a parameter instead.

The existing designs also include support "barbells" connecting the standoffs. It would be great if these could be parametric, and not just hardcoded, as well.

Finally, in one of the existing files, there are also cable tie mounts on the top and bottom of the mount, but I'm not sure I need those right now in the parametric version. It would be good to have the option to turn those on/off and to control the size and spacing.

I'd like the final parametric OpenSCAD file to:

*   Use parameters for all of the dimensions I've described (standoff heights, wall thickness, inner hole diameters, standoff coordinates for both X3 and Arduino holes, "barbell" parameters, cable tie mount parameters, and a toggle to enable or disable the cable tie mounts.
*   Use the `linear_extrude()` function for the "barbell" features rather than direct extrusion since it simplifies my ability to make a slight change later.
*   Use clear module names (e.g. `standoff`, `x3_standoffs`, `arduino_mega_standoffs`, and `ctmount` when enabled)
*   Use `difference()` to create holes in the cylinders and the cable-tie mounts.
*   Be well-commented so it is clear how to change different parameters.
*   Not use any external libraries, everything should be built-in OpenSCAD primitives or defined in the file.

Can you please generate a parametric OpenSCAD file for this based on these requirements?

[Assistant]
X3-OrdBot_Mount.scad:
```
// By Josiah Ritchie <josiah@josiahritchie.com>
// For mounting a Panucatt X3 controller in holes for an Arduino Mega/RAMPS

///////////////
// Settings
///////////////

// How thick should the walls of the radius be in mm?
standoff_wall_thickness = 3;

// How big a hole should be in the middle of the Arduino Mega standoff?
standoff_inner_radius_am = 1;

// How tall should the Arduino Mega standoffs be?
height_am = 3;

// How big a hole should be in the middle of the standoff? (X3 hole is about 3.8)
standoff_inner_radius_x3 = 2.5;

// How tall should the X3 standoffs be?
height_x3 = 15;

// cable tie mount height
height = 7;

// cable tie mount width
width = 10;

// cable tie mount depth
depth = 3;

// cable tie mount wall width
wall_width = 3;

////////////////////
// Make the thing!
////////////////////

color("blue")x3_standoffs(height_x3,standoff_wall_thickness,standoff_inner_radius_x3);
translate([10,8,0])arduino_mega_standoffs(height_am,standoff_wall_thickness,standoff_inner_radius_am);

// The cable tie mounts -bottom
translate([20,2,height])ctmount(height,width,depth,wall_width);
translate([40,2,height])ctmount(height,width,depth,wall_width);
translate([60,2,height])ctmount(height,width,depth,wall_width);
translate([80,2,height])ctmount(height,width,depth,wall_width);

// The cable tie mounts -top
translate([23,55,height])ctmount(height,width,depth,wall_width);
translate([47.5,55,height])ctmount(height,width,depth,wall_width);
translate([72,55,height])ctmount(height,width,depth,wall_width);

//////////////////////////////
// Functions & Modules
//////////////////////////////

// Make a cable-tie mount
module ctmount(height,width,depth,wall_width) {

  outer_radius = width/2;
  inner_radius = width/2-wall_width;

  difference() {
  // Circle at top
  rotate(a=[0,90,90]) {
    difference() {
      cylinder(h=depth,r1=outer_radius,r2=outer_radius,$fn=20);
      cylinder(h=depth,r1=inner_radius,r2=inner_radius,$fn=20);
      translate([0,-2,0]) cube(size = [height,inner_radius*2,depth], center = false, $fn=20);
    }
  }
}
  // Sides
  rotate(a=[90,0,0])translate([-width/2,-height,-depth]) {
    cube(size = [wall_width,height,depth], center = false, $fn=20);
    translate([wall_width+(inner_radius*2),0,0]) {
      cube(size = [wall_width,height,depth], center = false, $fn=20);
    }
  }
}

// Make a basic standoff
module standoff(height,thickness,inner_radius) {

  // Inner radius + wall thickness = outer radius of the standoff
  outer_radius = inner_radius + thickness;

  // Make the standoff cylinder and remove the hole in the center
  difference() {
    cylinder(h=height,r1=outer_radius,r2=outer_radius,$fn=20);
    cylinder(h=height,r1=inner_radius,r2=inner_radius,$fn=20);
  }
}

// Make 4 standoffs and space them appropriately for an Arduino Mega
module arduino_mega_standoffs(up,out,in) {
  // Arduino Mega mounting holes are at [0,0],[81.5,0],[1,48],[75,48]
  bl = [0,0,0]; //bottomleft
  br = [81.5,0,0]; //bottomright
  tl = [1,48,0]; //topleft
  tr = [75,48,0]; //topright

  standoff(up,out,in);
  translate(tl)standoff(up,out,in);
  translate(br)standoff(up,out,in);
  translate(tr)standoff(up,out,in);

  // Support structure to connect posts for Arduino
  barbell_w_hole(tr,tl,6,6,230,230);
  barbell_w_hole(br,bl,6,6,240,240);
}

// make 4 standoffs and space them appropriately for a Panucatt X3
module x3_standoffs(up,out,in){
  bl = [0,0,0]; //bottomleft
  br = [101.6,0,0]; //bottomright
  tl = [0,64.3,0]; //topleft
  tr = [101.6,64.3,0]; //topright

  // X3 holes are in a square 4"x2.53" (101.6mm x 64.3mm) on center
  standoff(up,out,in);
  translate(br) standoff(up,out,in);
  translate(tr) standoff(up,out,in);
  translate(tl) standoff(up,out,in);

  // Support structure to connect posts
  $fn=100;
  linear_extrude (height=1.3)barbell([bl[0],bl[1]],[br[0],br[1]],6,6,2000,230);
  linear_extrude (height=1.3)barbell([tl[0],tl[1]],[tr[0],tr[1]],6,6,240,1500);
  linear_extrude (height=1.3)barbell([br[0],br[1]],[tr[0],tr[1]],6,6,150,150);
  linear_extrude (height=1.3)barbell([tl[0],tl[1]],[bl[0],bl[1]],6,6,150,150);
}

module barbell_w_hole (pA,pB,r1,r2,r3,r4)
{
  //pA is position of the first point in three coordinates
  //pB is position of the second point in three coordinates
  $fn=100;

  difference ()
  {
    linear_extrude(height=1.3)barbell([pA[0],pA[1]],[pB[0],pB[1]],r1,r2,r3,r4);
    translate(pA)cylinder(h=height_am,r=standoff_inner_radius_am);
    translate(pB)cylinder(h=height_am,r=standoff_inner_radius_am);
  }
}

// Below is directly from Thing #14742: http://www.thingiverse.com/thing:14742
// x1 and x2 are x,y coordinates.

module barbell (x1,x2,r1,r2,r3,r4)
{
	x3=triangulate (x1,x2,r1+r3,r2+r3);
	x4=triangulate (x2,x1,r2+r4,r1+r4);
	render()
	difference ()
	{
		union()
		{
			translate(x1)
			circle (r=r1);
			translate(x2)
			circle(r=r2);
			polygon (points=[x1,x3,x2,x4]);
		}
		translate(x3)
		circle(r=r3,$fa=5);
		translate(x4)
		circle(r=r4,$fa=5);
	}
}

function triangulate (point1, point2, length1, length2) =
point1 +
length1*rotated(
atan2(point2[1]-point1[1],point2[0]-point1[0])+
angle(distance(point1,point2),length1,length2));

function distance(point1,point2)=
sqrt((point1[0]-point2[0])*(point1[0]-point2[0])+
(point1[1]-point2[1])*(point1[1]-point2[1]));

function angle(a,b,c) = acos((a*a+b*b-c*c)/(2*a*b));

function rotated(a)=[cos(a),sin(a),0];

```
X3-OrdBot_Mount-no_cable_ties.scad:
```
// By Josiah Ritchie <josiah@josiahritchie.com>
// For mounting a Panucatt X3 controller in holes for an Arduino Mega/RAMPS

///////////////
// Settings
///////////////

// How thick should the walls of the radius be in mm?
standoff_wall_thickness = 3;

// How big a hole should be in the middle of the Arduino Mega standoff?
standoff_inner_radius_am = 1;

// How tall should the Arduino Mega standoffs be?
height_am = 3;

// How big a hole should be in the middle of the standoff? (X3 hole is about 3.8)
standoff_inner_radius_x3 = 2.5;

// How tall should the X3 standoffs be?
height_x3 = 15;

// cable tie mount height
height = 7;

// cable tie mount width
width = 10;

// cable tie mount depth
depth = 3;

// cable tie mount wall width
wall_width = 3;

////////////////////
// Make the thing!
////////////////////

color("blue")x3_standoffs(height_x3,standoff_wall_thickness,standoff_inner_radius_x3);
translate([10,8,0])arduino_mega_standoffs(height_am,standoff_wall_thickness,standoff_inner_radius_am);

/*
// The cable tie mounts -bottom
translate([20,2,height])ctmount(height,width,depth,wall_width);
translate([40,2,height])ctmount(height,width,depth,wall_width);
translate([60,2,height])ctmount(height,width,depth,wall_width);
translate([80,2,height])ctmount(height,width,depth,wall_width);

// The cable tie mounts -top
translate([23,55,height])ctmount(height,width,depth,wall_width);
translate([47.5,55,height])ctmount(height,width,depth,wall_width);
translate([72,55,height])ctmount(height,width,depth,wall_width);
*/

//////////////////////////////
// Functions & Modules
//////////////////////////////

// Make a cable-tie mount
module ctmount(height,width,depth,wall_width) {

  outer_radius = width/2;
  inner_radius = width/2-wall_width;

  difference() {
  // Circle at top
  rotate(a=[0,90,90]) {
    difference() {
      cylinder(h=depth,r1=outer_radius,r2=outer_radius,$fn=20);
      cylinder(h=depth,r1=inner_radius,r2=inner_radius,$fn=20);
      translate([0,-2,0]) cube(size = [height,inner_radius*2,depth], center = false, $fn=20);
    }
  }
}
  // Sides
  rotate(a=[90,0,0])translate([-width/2,-height,-depth]) {
    cube(size = [wall_width,height,depth], center = false, $fn=20);
    translate([wall_width+(inner_radius*2),0,0]) {
      cube(size = [wall_width,height,depth], center = false, $fn=20);
    }
  }
}

// Make a basic standoff
module standoff(height,thickness,inner_radius) {

  // Inner radius + wall thickness = outer radius of the standoff
  outer_radius = inner_radius + thickness;

  // Make the standoff cylinder and remove the hole in the center
  difference() {
    cylinder(h=height,r1=outer_radius,r2=outer_radius,$fn=20);
    cylinder(h=height,r1=inner_radius,r2=inner_radius,$fn=20);
  }
}

// Make 4 standoffs and space them appropriately for an Arduino Mega
module arduino_mega_standoffs(up,out,in) {
  // Arduino Mega mounting holes are at [0,0],[81.5,0],[1,48],[75,48]
  bl = [0,0,0]; //bottomleft
  br = [81.5,0,0]; //bottomright
  tl = [1,48,0]; //topleft
  tr = [75,48,0]; //topright

  standoff(up,out,in);
  translate(tl)standoff(up,out,in);
  translate(br)standoff(up,out,in);
  translate(tr)standoff(up,out,in);

  // Support structure to connect posts for Arduino
  barbell_w_hole(tr,tl,6,6,230,230);
  barbell_w_hole(br,bl,6,6,240,240);
}

// make 4 standoffs and space them appropriately for a Panucatt X3
module x3_standoffs(up,out,in){
  bl = [0,0,0]; //bottomleft
  br = [101.6,0,0]; //bottomright
  tl = [0,64.3,0]; //topleft
  tr = [101.6,64.3,0]; //topright

  // X3 holes are in a square 4"x2.53" (101.6mm x 64.3mm) on center
  standoff(up,out,in);
  translate(br) standoff(up,out,in);
  translate(tr) standoff(up,out,in);
  translate(tl) standoff(up,out,in);

  // Support structure to connect posts
  $fn=100;
  linear_extrude (height=1.3)barbell([bl[0],bl[1]],[br[0],br[1]],6,6,2000,230);
  linear_extrude (height=1.3)barbell([tl[0],tl[1]],[tr[0],tr[1]],6,6,240,1500);
  linear_extrude (height=1.3)barbell([br[0],br[1]],[tr[0],tr[1]],6,6,150,150);
  linear_extrude (height=1.3)barbell([tl[0],tl[1]],[bl[0],bl[1]],6,6,150,150);
}

module barbell_w_hole (pA,pB,r1,r2,r3,r4)
{
  //pA is position of the first point in three coordinates
  //pB is position of the second point in three coordinates
  $fn=100;

  difference ()
  {
    linear_extrude(height=1.3)barbell([pA[0],pA[1]],[pB[0],pB[1]],r1,r2,r3,r4);
    translate(pA)cylinder(h=height_am,r=standoff_inner_radius_am);
    translate(pB)cylinder(h=height_am,r=standoff_inner_radius_am);
  }
}

// Below is directly from Thing #14742: http://www.thingiverse.com/thing:14742
// x1 and x2 are x,y coordinates.

module barbell (x1,x2,r1,r2,r3,r4)
{
	x3=triangulate (x1,x2,r1+r3,r2+r3);
	x4=triangulate (x2,x1,r2+r4,r1+r4);
	render()
	difference ()
	{
		union()
		{
			translate(x1)
			circle (r=r1);
			translate(x2)
			circle(r=r2);
			polygon (points=[x1,x3,x2,x4]);
		}
		translate(x3)
		circle(r=r3,$fa=5);
		translate(x4)
		circle(r=r4,$fa=5);
	}
}

function triangulate (point1, point2, length1, length2) =
point1 +
length1*rotated(
atan2(point2[1]-point1[1],point2[0]-point1[0])+
angle(distance(point1,point2),length1,length2));

function distance(point1,point2)=
sqrt((point1[0]-point2[0])*(point1[0]-point2[0])+
(point1[1]-point2[1])*(point1[1]-point2[1]));

function angle(a,b,c) = acos((a*a+b*b-c*c)/(2*a*b));

function rotated(a)=[cos(a),sin(a),0];

```


[User]
Okay, I'm looking to create a customizable desktop nameplate, similar to the one I found on Thingiverse. I really like the overall design, but I'd like a more flexible version, ideally generated by a parametric OpenSCAD file.

Here's what I like and what I want to be able to control:

**Core Design:**
*   The nameplate has a slanted, rectangular profile. The base is wider than the top, giving it a stable, leaning-back appearance.
*   Text is extruded and placed on the face of this sloped shape, kind of embedded into it.
*   It's designed for two-color printing, with the text being a different color from the base.

**Parameters I need:**
*   **`label_text`**: The actual text to display on the nameplate.
*   **`font`**: The font used for the text. I'd like to be able to choose from a selection of DXF fonts, just like in the original. I know those files are typically in a folder called "write/", so support for that is essential. Specifically, I'd want to use fonts like "write/BlackRose.dxf", "write/knewave.dxf", "write/Letters.dxf", and "write/orbitron.dxf".
*   **`font_size`**: The size of the text characters.
*   **`letter_spacing`**: Control over the spacing between the characters.
*   **`end_space`**: The amount of empty space at the beginning and end of the text extrusion.
*   **`base_width`**: Width of the base of the nameplate.
*   **`base_height`**: Height of the base of the nameplate.
*   **`top_width`**: The width at the top of the nameplate. The difference between `base_width` and `top_width` controls the slope.
*   **`text_depth`**: The extrusion depth of the text characters.
*   **`text_vertical_offset`**: The distance between the base and the text.
*   **`base_depth`**: The depth (or thickness) of the base.
*   **`base_slant_angle`**: The angle of the slant in degrees, that is controlled by `base_width` and `top_width`.

**Specific Functionality:**
*   I'd like the text to be centered both horizontally and vertically on the face of the sloped base.
*   The "write" library is used to deal with DXF fonts, which is a common pattern. I'd like that included. I understand you will not be attaching the library itself.
*   The generated object should be oriented for printing, with the slanted base resting flat on the build platform.
*   The code should use `linear_extrude` for the base.

**Notes:**

*   I know that the original code has a hardcoded nameplate profile, and that was fine for that design. I really need control over the profile.
*   The original had a hard coded horizontal offset for text placement, and that won't work for different sizes.

I'd really appreciate it if you could generate the OpenSCAD code for me that incorporates all of these parameters and considerations. I don't need a specific value, just a parameter named as described, and appropriate defaults, if necessary.

[Assistant]
desktop_nameplate-pub.scad:
```
////////////////////////
//  Desk Nameplate
//
//  Oct 8, 2013
//  RLazure
//
//  This desktop nameplate is intended to be
//  printed in 2 colours.
//
//  Use the Pause @ZPos feature in the Replicator's
//  version 7.3 firmware.
//
//  This code is inspired in part
//			by TheNewHobbyist's
//  input parameters and label length calculations
//
//////////////////////////////

// include <write.scad>  // for home computer
include <write/Write.scad>

///// inputs ////////////////

// What would you like to label?
label_text = "Startrek fan";

// What style of characters?
font = "write/Letters.dxf"; // ["write/BlackRose.dxf":Black Rose,"write/knewave.dxf":Knewave,"write/Letters.dxf":Letters,"write/orbitron.dxf":Orbitron]

// How big?
font_size = 12; //[8:20]

// Want to space out that text?
letter_spacing = 1; // // [0.9:Tight,1:Default,1.5:Wide]

// How much space on the ends?
end_space = 3; //[0:10]

///////////////////  calculations  //////////////

width = (.6875*font_size*letter_spacing); // Find width of each character
totalwidth = width * len(label_text); // Find total width of text

length_extrude = totalwidth+(end_space*width);
textz_start_pos = totalwidth/2;
textx_start_pos = (24-font_size)/2 + font_size;

/////// debug ////////

echo("len label text= ",len(label_text));
echo("totalwidth= ",totalwidth);
echo("width = ",width);
echo("length_extrude = ",length_extrude);
echo("textz_start_pos = ",textz_start_pos);

///////////////////////////////////////
/////// modules ///////////////////////
//////////////////////////////////////

module name_plate(){

union() {

//	linear_extrude(length_extrude, center = true, convexity = 10, twist = 0)
   linear_extrude(height=length_extrude, center = true)
	polygon([[8,0],[0,16],[24,16],[16,0]], [[0,1,2,3]]);  // profile shape

	translate([textx_start_pos,15.5,textz_start_pos]) rotate([0,90,90])
	write(label_text,t=3.5,h=font_size,font=font,center=false);
	}
	}

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

// orient on platform

rotate([90,0,270])
translate([-12,0,0]) name_plate();

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

```


[User]
Okay, I need an OpenSCAD design for a parametric box with a slide-in PCB and mounting tabs, but the current code has issues with the tab positions. It should adjust them to be equidistant from the sides and top/bottom of the box and not relative to the PCB itself. Also, I'd like to be able to customize the number of tabs.

Here's a breakdown of the design and what I need:

**General Description:**

I want a rectangular box with a slide-in slot for a PCB. The PCB slides in from one side and is held in place by the box's walls. The box should also have mounting tabs with screw holes on the sides of the box to allow for easy mounting.

**Key Parameters (Customizable):**

*   **`pcb_width`**: The width of the PCB.
*   **`pcb_length`**: The length of the PCB.
*   **`pcb_height`**: The thickness of the PCB.
*   **`pcb_bottom_margin`**: The distance between the bottom of the PCB and the bottom of the box (to raise the PCB).
*   **`wall_width_thick`**: The thickness of the box walls.
*  **`tab_hole_radius`**: Radius of the screw hole in the mounting tabs.
*   **`tab_outer_radius`**: Radius of the mounting tab.
*   **`box_height`**: The overall height of the box (excluding the base).
*  **`num_tabs_per_side`**: The number of mounting tabs on each long side of the box.

**Specific Issues with Current Code and Desired Changes:**

1.  **Tab Positioning:** The existing code places tabs at fixed locations along the length of the PCB, using hardcoded points like `tab_outer_radius,(pcb_length + 2*wall_width)/2,pcb_length + 2*wall_width-tab_outer_radius`.  Instead, the tabs should be spaced evenly along each side of the box. They should be centered within the box wall and use  `num_tabs_per_side` to determine their positioning. The first and last tab should be located `tab_outer_radius` distance from the edges of the box.
2.  **Customizable Number of Tabs:** I want to be able to specify how many tabs are on each side of the box.  This should be controlled by the `num_tabs_per_side` parameter.
3.  **Parametric Tab Size**: The tabs in the provided code have a tab_outer_radius parameter, but the module named 'tab' has a parameter hardcoded as `box_height_text_box`. I need the tab_outer_radius to define the tab radius.

**Libraries:**

I don't need any external libraries for this, just the core OpenSCAD functionality.

**Output:**

The design should generate a 3D printable box model as described with easily adjustable dimensions.

Could you provide the corrected OpenSCAD code?

[Assistant]
pcb_box_slide_with_tabs_param.scad:
```
/* pcb_box_slide_with_tabs.scad
 * By Nicholas C Lewis - Jan 1, 2011
 * http://www.thingiverse.com/thing:5396
 *
 * derived from pcb_box_slide.scad
 *     Parametric, open PCB-box (slide-in) by chlunde
 *     http://www.thingiverse.com/thing:4071
 *
 * CHANGES
 * - adjusted to fit Arduino Mega
 * - added mounting tabs
 * - turned off cutouts
 * - adjusted bottom cutout size
 */

//CUSTOMIZER VARIABLES
// PCB width
pcb_width_text_box = 100;
// PCB length
pcb_length_text_box = 150;
// PCB height
pcb_height_text_box = 1.62;
// PCB bottom margin
pcb_bottom_margin_text_box = 2.5;
// Wall width tick
wall_width_thick_text_box = 3.5;
// Tab hole radius
tab_hole_radius_text_box = 4;
// Tab outer radius
tab_outer_radius_text_box = 7;
// Box height
box_height_text_box = 10;
//CUSTOMIZER VARIABLES END

pcb_width = pcb_width_text_box;
pcb_length = pcb_length_text_box;
pcb_height = pcb_height_text_box;
slisse = 1;

pcb_bottom_margin = pcb_bottom_margin_text_box;
wall_width_thick = wall_width_thick_text_box;
wall_width = wall_width_thick-slisse;
box_height = box_height_text_box;

//tab parameters
tab_hole_radius=tab_hole_radius_text_box;
tab_outer_radius=box_height_text_box;

module tab() {
	difference(){
		union() {
			translate([-tab_outer_radius,-tab_outer_radius,0])
			cube([tab_outer_radius,2*tab_outer_radius,wall_width]);
			translate([-tab_outer_radius,0,0])
				cylinder(r=tab_outer_radius, h = wall_width);
		}
		translate([-tab_outer_radius,0,0])
		cylinder(r= tab_hole_radius, h = wall_width+3,center=true);
	}

}

module box() {
  union() {
    cube([pcb_width + 2*wall_width, pcb_length + 2*wall_width, wall_width]);

    cube([wall_width_thick, pcb_length + 2*wall_width, box_height]);

    cube([pcb_width + 2*wall_width, wall_width_thick, box_height]);

    %translate([0, pcb_length+wall_width, 0])
      cube([pcb_width + 2*wall_width,wall_width,box_height]);

    translate([pcb_width + wall_width - slisse,0,0])
      cube([wall_width_thick, pcb_length + 2*wall_width, box_height]);
  }
//comment out this part to remove tabs
 for(i=[tab_outer_radius,(pcb_length + 2*wall_width)/2,pcb_length + 2*wall_width-tab_outer_radius]){
	translate([0,i,0])tab();
	translate([pcb_width + 2*wall_width,i,0])mirror()tab();
 }

}

module pcb() {
  translate([wall_width, wall_width, wall_width + pcb_bottom_margin])
    cube([pcb_width,pcb_length + wall_width + 0.1,pcb_height]);
  translate([wall_width, wall_width, wall_width + pcb_bottom_margin+pcb_height])rotate([0,45,0])
    cube([pcb_height,pcb_length + wall_width + 0.1,pcb_height]);
  translate([wall_width+pcb_width-2*cos(45)*pcb_height, wall_width, wall_width + pcb_bottom_margin+pcb_height])rotate([0,45,0])
    cube([pcb_height,pcb_length + wall_width + 0.1,pcb_height]);
  translate([wall_width_thick, wall_width, wall_width + pcb_bottom_margin])
    cube([pcb_width-2*slisse,pcb_length + wall_width + 0.1,box_height]);

}

module holes() {
  *translate([wall_width + pcb_width/2, wall_width_thick + 0.1, pcb_width/2+wall_width])
    rotate(a=90,v=[1,0,0])
      cylinder(r=pcb_width/2, h=wall_width_thick + 0.2);

  *translate([-0.1, wall_width + pcb_length/2, pcb_length/2 + wall_width])
    rotate(a=90,v=[0,1,0])
      cylinder(r=pcb_length/2, h=wall_width_thick + 0.2);

  *translate([pcb_width + wall_width - slisse - 0.1, wall_width + pcb_length/2, pcb_length/2 + wall_width])
    rotate(a=90,v=[0,1,0])
      cylinder(r=pcb_length/2, h=wall_width_thick + 0.2);

 * translate([pcb_width/2 + wall_width, wall_width + pcb_length/2, -0.1])
    rotate(a=0,v=[0,1,0])
      cylinder(r=min(pcb_length,pcb_width)/2 - wall_width/2, h=wall_width_thick + 0.2);

  inner_margin = 9;
  translate([inner_margin +wall_width, inner_margin+wall_width, -0.1])
    cube([pcb_width-inner_margin*2,pcb_length -inner_margin*2,wall_width + 0.2]);
}

difference() {
  box();
  pcb();
  holes();
}

* color([1,0,0])
  translate([pcb_width/2 + wall_width, wall_width + pcb_length/2, -0.1])
    rotate(a=0,v=[0,1,0])
      cylinder(r=min(pcb_length,pcb_width)/2 - wall_width/2, h=wall_width_thick + 0.2);

```