[User]
Okay, I'm looking for an OpenSCAD design for a customizable handle, and I'd actually like two variants: one with a single screw point and another with two screw points. I've seen some designs out there, but I need something I can really tweak to fit different situations. I'll break down what I'm looking for.

**For the Single Point Handle:**

First, I need to control the screw hole, specifying the `Screw_Hole_Diameter`. Also, I need an option to choose if the screw goes in from the front or rear with `Screw_Direction` where `0` would indicate the front and `1` the rear. If the screw is from the front, then I need to control a few additional parameters. Namely: `Screw_Head_Hole_Diameter` to define the hole for the screw head, `Screw_Material_Thickness` which is the distance between the head and the base of the handle, and finally `Screw_Countersink_Angle`.

If the screw goes in from the back, then I only need the `Screw_Hole_Depth`.

Next, I need to be able to customize the stem of the handle.  I'd like `Stem_Material_Thickness` to control its thickness on the X and Y axis and `Stem_Height` for the Z axis.

For the actual grip part of the handle, I need `Handle_Grip_Width` to control the thickness (X and Y) and `Handle_Height` for its height. There should also be a way to toggle whether the handle is square or not, using `Square_Handle` (0 for false and 1 for true).

There should be an option to include a base. I'd like a toggle called `Base_Enabled` (0 for false, 1 for true) and if it's enabled, then I need to specify both a `Base_Lip_Width` and `Base_Lip_Height`.

Finally, I need to be able to apply a bevel, with a `Bevel_Radius`. I also need a way to make the bevel rounded or not with `Bevel_Rounded` (0 for false and 1 for true).

**For the Dual Point Handle:**

Okay, so similar to the first design, but with two screw points.

First, I need the distance between screws called `Screw_Distance` and the `Screw_Hole_Diameter`. Then I need the `Screw_Direction` parameter to decide if the screws go in from the front (`0`) or rear (`1`).

If screws are from the front, I need the usual: `Screw_Head_Hole_Diameter`, `Screw_Material_Thickness`, and `Screw_Countersink_Angle`.

If the screws are from the rear, then I need `Screw_Hole_Depth`.

Next, I need to be able to control the dimensions of the handle itself using `Handle_Material_Thickness`, and the `Handle_Height`. I also need `Handle_End_Length` to define how much the handle extends past the body.

The handle needs a hand hole that can be specified using `Hand_Hole_Width` and `Hand_Hole_Depth`.

Finally, I need a bevel radius `Bevel_Radius` and a way to toggle the bevel's roundedness with `Bevel_Rounded` (0 for false and 1 for true).

For both designs, I'd like the code to be well-commented and use modules to make things more readable. Also, I'm not really looking to use any external libraries, but if you have to, please specify. I think it's important that these designs are fully parametric, so I can use the customizer or edit the parameters directly.

Could you help with this?

[Assistant]
codeandmake.com_General_Purpose_Handle_Single_Point_v1.2.scad:
```
/*
 * Copyright 2020-2022 Code and Make (codeandmake.com)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/*
 * Fully Customizable General Purpose Handles by Code and Make (https://codeandmake.com/)
 *
 * https://www.thingiverse.com/thing:4643658
 *
 * General Purpose Handle Single Point v1.2 (25 March 2022)
 */

/* [Screw] */

// Screw hole diameter
Screw_Hole_Diameter = 5; // [2:0.5:10]

// Screw from front or rear
Screw_Direction = 0; // [0:Front, 1:Rear]

/* [Front Screw] */

// Screw head hole diameter
Screw_Head_Hole_Diameter = 8.5; // [2:0.5:15]

// Material thickness (between screw head and base)
Screw_Material_Thickness = 5; // [2:0.5:15]

// Screw countersink angle (82 and 90 are common)
Screw_Countersink_Angle = 90; // [1:0.5:180]

/* [Rear Screw] */

// Depth of screw hole
Screw_Hole_Depth = 10; // [1:1:50]

/* [Stem] */

// Thickness of stem (X and Y axis)
Stem_Material_Thickness = 5.75; // [3:0.25:20]

// Height of stem (Z axis)
Stem_Height = 10; // [5:0.5:50]

/* [Handle] */

// Width of grip (X and Y axis)
Handle_Grip_Width = 8; // [5:0.5:80]

// Height of handle (Z axis)
Handle_Height = 10; // [10:0.5:80]

// Should the handle be square?
Square_Handle = 0; // [0:false, 1:true]

/* [Base] */

// Should a base be added?
Base_Enabled = 0; // [0:false, 1:true]

// Width of base lip (X and Y axis)
Base_Lip_Width = 8;// [5:0.5:80]

// Height of base lip (Z axis)
Base_Lip_Height = 10;// [5:0.5:80]

/* [Bevel] */

// Radius of bevel
Bevel_Radius = 1.5; // [0:0.5:5]

// Should bevel be rounded?
Bevel_Rounded = 0; // [0:false, 1:true]

module handle() {
  $fn = 100;

  stemRadius = (max(Screw_Hole_Diameter, Screw_Head_Hole_Diameter) / 2) + Stem_Material_Thickness;

  dimensionsX = max((stemRadius + Handle_Grip_Width) * 2, (stemRadius + Base_Lip_Width) * 2);
  dimensionsY = max((stemRadius + Handle_Grip_Width) * 2, (stemRadius + Base_Lip_Width) * 2);
  dimensionsZ = (Base_Enabled ? Base_Lip_Height : 0) + Stem_Height + Handle_Grip_Width + Handle_Height;

  echo(str("Dimensions: X: ", dimensionsX, "mm, Y: ", dimensionsY, "mm Z: ", dimensionsZ, "mm"));

  difference() {
    if (Square_Handle) {
      intersection() {
        squareHandleSingleExtrude();

        rotate([0, 0, 90]) {
          squareHandleSingleExtrude();
        }
      }
    } else {
      rotate_extrude(convexity=10) {
        profile();
      }
    }

    if (Screw_Direction == 0) {
      screwHole(Base_Lip_Height + Stem_Height + Handle_Grip_Width + Handle_Height,
        Screw_Hole_Diameter,
        Screw_Head_Hole_Diameter,
        (Base_Lip_Height + Stem_Height + Handle_Grip_Width + Handle_Height) - Screw_Material_Thickness,
        0,
        Screw_Countersink_Angle);
    }
    else if (Screw_Direction == 1) {
      translate([0, 0, -1]) {
        cylinder(d = Screw_Hole_Diameter, h = Screw_Hole_Depth + 1);
      }
    }
  }

  module profile() {
    difference() {
      union() {
        if(Base_Enabled) {
          polygon(points=[
            // inner bottom corner
            [0,0],

            // inner top corner
            [0, Base_Lip_Height + Stem_Height + Handle_Grip_Width + Handle_Height],

            // outer handle top corner
            [stemRadius + Handle_Grip_Width - Bevel_Radius, Base_Lip_Height + Stem_Height + Handle_Grip_Width + Handle_Height],
            [stemRadius + Handle_Grip_Width, Base_Lip_Height + Stem_Height + Handle_Grip_Width + Handle_Height - Bevel_Radius],

            // outer handle bottom corner
            [stemRadius + Handle_Grip_Width, Base_Lip_Height + Stem_Height + Handle_Grip_Width],

            // outer top stem corner
            [stemRadius, Base_Lip_Height + Stem_Height],

            // outer bottom stem corner
            [stemRadius, Base_Lip_Height + min(Base_Lip_Width - Bevel_Radius, Bevel_Radius)],
            [stemRadius + min(Base_Lip_Width - Bevel_Radius, Bevel_Radius), Base_Lip_Height],

            // outer top base corner
            [(stemRadius + Base_Lip_Width) - Bevel_Radius, Base_Lip_Height],
            [(stemRadius + Base_Lip_Width), Base_Lip_Height - Bevel_Radius],

            // outer bottom base corner
            [stemRadius + Base_Lip_Width, 0]
            ]);
        } else {
          polygon(points=[
            // inner bottom corner
            [0, 0],

            // inner top corner
            [0, Stem_Height + Handle_Grip_Width + Handle_Height],

            // outer handle top corner
            [stemRadius + Handle_Grip_Width - Bevel_Radius, Stem_Height + Handle_Grip_Width + Handle_Height],
            [stemRadius + Handle_Grip_Width, Stem_Height + Handle_Grip_Width + Handle_Height - Bevel_Radius],

            // outer handle bottom corner
            [stemRadius + Handle_Grip_Width, Stem_Height + Handle_Grip_Width],

            // outer top stem corner
            [stemRadius, Stem_Height],

            // // outer bottom stem corner
            [stemRadius, 0]
            ]);
        }

        if (Bevel_Rounded) {
          // outer handle top corner
          translate([stemRadius + Handle_Grip_Width - Bevel_Radius, (Base_Enabled ? Base_Lip_Height : 0) + Stem_Height + Handle_Grip_Width + Handle_Height - Bevel_Radius, 0]) {
            circle(r = Bevel_Radius);
          }

          if(Base_Enabled) {
            // outer top base corner
            translate([(stemRadius + Base_Lip_Width) - Bevel_Radius, Base_Lip_Height - Bevel_Radius, 0]) {
              intersection() {
                circle(r = Bevel_Radius);
                square(size=[Bevel_Radius, Bevel_Radius]);
              }
            }
          }
        }
      }

      if (Base_Enabled && Bevel_Rounded) {
        translate([stemRadius + min(Base_Lip_Width - Bevel_Radius, Bevel_Radius), Base_Lip_Height + min(Base_Lip_Width - Bevel_Radius, Bevel_Radius), 0]) {
          circle(r = min(Base_Lip_Width - Bevel_Radius, Bevel_Radius));
        }
      }
    }
  }

  module squareHandleSingleExtrude() {
    rotate([90, 0, 0]) {
      linear_extrude(height = max((stemRadius + Handle_Grip_Width) * 2, (stemRadius + Base_Lip_Width) * 2), convexity = 10, center = true) {
        profile();
        mirror([1, 0, 0]) {
          profile();
        }
      }
    }
  }

  module screwHole(holeDepth, holeDiameter, headDiameter, boreDepth, aboveHoleBoreDepth, sinkAngle) {
    boreDiameter = (holeDiameter > 0 ? max(holeDiameter, headDiameter) : 0);
    countersinkAdjacent = (boreDiameter / 2) / tan(sinkAngle / 2);

    translate([0, 0, -0.001]) {
      // screw hole
      cylinder(holeDepth + 0.002, holeDiameter / 2, holeDiameter / 2, false);

      // countersink
      if (sinkAngle > 0) {
        translate([0, 0, holeDepth - countersinkAdjacent - boreDepth]) {
          cylinder(countersinkAdjacent + 0.002, 0, (boreDiameter / 2), false);
        }

        // above hole and bore
        translate([0, 0, holeDepth - boreDepth]) {
          cylinder(boreDepth + aboveHoleBoreDepth + 0.002, boreDiameter / 2, boreDiameter / 2, false);
        }
      } else {
        // full bore
        cylinder(holeDepth + aboveHoleBoreDepth + 0.002, boreDiameter / 2, boreDiameter / 2, false);
      }
    }
  }
}

handle();

```
codeandmake.com_General_Purpose_Handle_Dual_Point_v1.2.scad:
```
/*
 * Copyright 2020-2022 Code and Make (codeandmake.com)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/*
 * Fully Customizable General Purpose Handles by Code and Make (https://codeandmake.com/)
 *
 * https://www.thingiverse.com/thing:4643658
 *
 * General Purpose Handle Dual Point v1.2 (25 March 2022)
 */

/* [Screws] */

// Distance between the screws
Screw_Distance = 100; // [50:1:300]

// Screw hole diameter
Screw_Hole_Diameter = 5; // [2:0.5:10]

// Screw from front or rear
Screw_Direction = 0; // [0:Front, 1:Rear]

/* [Front Screws] */

// Screw head hole diameter
Screw_Head_Hole_Diameter = 8.5; // [2:0.5:15]

// Material thickness (between screw head and base)
Screw_Material_Thickness = 5; // [2:0.5:15]

// Screw countersink angle (82 and 90 are common)
Screw_Countersink_Angle = 90; // [1:0.5:180]

/* [Rear Screws] */

// Depth of screw holes
Screw_Hole_Depth = 10; // [1:1:50]

/* [Handle] */

// Thickness of handle (X and Y axis)
Handle_Material_Thickness = 10; // [10:0.5:50]

// Height of handle (Z axis)
Handle_Height = 18; // [10:0.5:50]

// Handle end length (in addition to Handle_Material_Thickness)
Handle_End_Length = 17.5; // [0:0.5:100]

/* [Hand Hole] */

// Width of hand hole (X axis)
Hand_Hole_Width = 65; // [50:0.5:150]

// Depth of hand hole (Y axis)
Hand_Hole_Depth = 20; // [10:0.5:50]

/* [Bevel] */

// Radius of bevel
Bevel_Radius = 1.5; // [0:0.5:5]

// Should bevel be rounded?
Bevel_Rounded = 0; // [0:false, 1:true]

module handle() {
  $fn = 100;

  dimensionsX = ((Hand_Hole_Width / 2) + Handle_Material_Thickness + Handle_End_Length) * 2;
  dimensionsY = Hand_Hole_Depth + Handle_Material_Thickness;
  dimensionsZ = Handle_Height;

  echo(str("Dimensions: X: ", dimensionsX, "mm, Y: ", dimensionsY, "mm Z: ", dimensionsZ, "mm"));

  rotate([90, 0, 0]) {
    handleHalf();
    mirror([1, 0, 0]) {
      handleHalf();
    }
  }

  module handleHalf() {
    difference() {
      // handle
      hull() {
        // upright profile
        mirror([1, 0, -1]) {
          linear_extrude(height = 1, convexity = 10) {
            handleProfile(0);
          }
        }

        // handle end
        translate([(Hand_Hole_Width) / 2, 0, 0]) {
          intersection() {
            cube([Handle_End_Length + Handle_Material_Thickness, Handle_Height, Hand_Hole_Depth + Handle_Material_Thickness]);

            hull() {
              // bottom profile
              mirror([0, 0, 1]) {
                linear_extrude(height = 1, convexity = 10) {
                  handleProfile(Hand_Hole_Depth - Handle_End_Length);
                }
              }

              translate([0, 0, Hand_Hole_Depth]) {
                intersection() {
                  cube([Handle_Material_Thickness, Handle_Height, Handle_Material_Thickness]);

                  rotate([-90, 0, 0]) {
                    rotate_extrude(convexity=10) {
                      handleProfile(Hand_Hole_Depth);
                    }
                  }
                }
              }
            }
          }
        }
      }

      // handle hole
      union() {
        r = min(Handle_Material_Thickness / 2, Hand_Hole_Depth, Hand_Hole_Width / 2);

        handHoleCorner(r);

        translate([0, 0, -0.5]) {
          linear_extrude(height = Hand_Hole_Depth - r + 0.5, convexity = 10) {
            projection() {
              handHoleCorner(r);
            }
          }
        }

        translate([(Hand_Hole_Width / 2) - r, 0, Hand_Hole_Depth - r]) {
          rotate([0, -90, 0]) {
            translate([-((Hand_Hole_Width / 2) - r), 0, 0]) {
              linear_extrude(height = (Hand_Hole_Width / 2) - r  + 0.5, convexity = 10) {
                projection() {
                  handHoleCorner(r);
                }
              }
            }
          }
        }

        translate([-0.5, -0.5, -0.5]) {
          cube([(Hand_Hole_Width / 2) - r  + 0.5, Handle_Height + 1, Hand_Hole_Depth - r + 0.5]);
        }
      }

      // screw hole
      translate([Screw_Distance / 2, Handle_Height / 2, 0]) {
        if (Screw_Direction == 0) {
            screwHole(Hand_Hole_Depth + Handle_Material_Thickness,
              Screw_Hole_Diameter,
              Screw_Head_Hole_Diameter,
              (Hand_Hole_Depth + Handle_Material_Thickness) - Screw_Material_Thickness,
              0,
              Screw_Countersink_Angle);
        }
        else if (Screw_Direction == 1) {
          translate([0, 0, -1]) {
            cylinder(d = Screw_Hole_Diameter, h = Screw_Hole_Depth + 1);
          }
        }
      }
    }
  }

  module screwHole(holeDepth, holeDiameter, headDiameter, boreDepth, aboveHoleBoreDepth, sinkAngle) {
    boreDiameter = (holeDiameter > 0 ? max(holeDiameter, headDiameter) : 0);
    countersinkAdjacent = (boreDiameter / 2) / tan(sinkAngle / 2);

    translate([0, 0, -0.001]) {
      // screw hole
      cylinder(holeDepth + 0.002, holeDiameter / 2, holeDiameter / 2, false);

      // countersink
      if (sinkAngle > 0) {
        translate([0, 0, holeDepth - countersinkAdjacent - boreDepth]) {
          cylinder(countersinkAdjacent + 0.002, 0, (boreDiameter / 2), false);
        }

        // above hole and bore
        translate([0, 0, holeDepth - boreDepth]) {
          cylinder(boreDepth + aboveHoleBoreDepth + 0.002, boreDiameter / 2, boreDiameter / 2, false);
        }
      } else {
        // full bore
        cylinder(holeDepth + aboveHoleBoreDepth + 0.002, boreDiameter / 2, boreDiameter / 2, false);
      }
    }
  }

  module handHoleCorner(r) {
    translate([(Hand_Hole_Width / 2) - r, -0.5, Hand_Hole_Depth - r]) {
      // corner
      rotate([-90, 0, 0]) {
        cylinder(r = r + 0.01, h = Handle_Height + 1);
      }

      // bevel
      translate([0, 0.5, 0]) {
        rotate([90, -90, 180]) {
          innerBevel(r);
        }

        translate([0, Handle_Height, 0]) {
          rotate([90, 0, 0]) {
            innerBevel(r);
          }
        }
      }
    }
  }

  module innerBevel(r) {
    translate([0, 0, -1]) {
      cylinder(r = r + Bevel_Radius, h = 1);
    }

    cylinder(r = r, h = Bevel_Radius);

    rotate_extrude(convexity=10) {
      translate([r, 0, 0]) {
        difference() {
          polygon([
            [0, 0],

            [0, Bevel_Radius],

            [Bevel_Radius, 0],
          ]);

          if (Bevel_Rounded) {
            translate([Bevel_Radius, Bevel_Radius, 0]) {
              intersection() {
                circle(r=Bevel_Radius);

                translate([-Bevel_Radius, -Bevel_Radius, 0]) {
                  square([Bevel_Radius, Bevel_Radius]);
                }
              }
            }
          }
        }
      }
    }
  }

  /**
   * xTrim - Amount to trim from 'flat' end
   */
  module handleProfile(xTrim) {
    translate([0, Handle_Height / 2, 0]) {
      handleHalfProfile(xTrim);
      mirror([0, 1, 0]) {
        handleHalfProfile(xTrim);
      }
    }
  }

  module handleHalfProfile(xTrim) {
    xLen = Hand_Hole_Depth + Handle_Material_Thickness;

    polygon([
      [0, 0],

      [0, Handle_Height / 2],

      [xLen - xTrim - Bevel_Radius, Handle_Height / 2],
      [xLen - xTrim, (Handle_Height / 2) - Bevel_Radius],

      [xLen - xTrim, 0],
    ]);

    translate([xLen - xTrim - Bevel_Radius, (Handle_Height / 2) - Bevel_Radius, 0]) {
      if (Bevel_Rounded) {
        intersection() {
          square([Bevel_Radius, Bevel_Radius]);
          circle(r = Bevel_Radius);
        }
      }
    }
  }
}

handle();

```


[User]
I'm looking to generate a parametric Moiré animation grating in OpenSCAD. I have some specific requirements and would like it to be highly customizable.

Here's what I need:

**Overall Structure:**

*   The design will be a flat, rectangular plate with grooves cut into it.
*   There will be a series of vertical grooves that create the Moire effect.
*   I need to be able to set the number of frames for the animation. This determines the spacing of the grooves.
*   There should be round corners on the rectangular plate.
*   The plate should have some visual indicators for the frame positions as well as an indicator of the total number of frames.

**Customizable Parameters:**

*   **`number_of_frames`:** An integer that determines the number of frames in the animation, and therefore the mask width of the grating.
*   **`width`:** The overall width of the rectangular plate.
*   **`depth`:** The overall depth of the rectangular plate.
*   **`height`:** The overall height (thickness) of the rectangular plate.
*   **`groove_width`:** The width of each individual groove.
*   **`indicator_height`:** The height of the indicators.
*  **`conerRadius`:** The radius of the rounded corners.

**Specific Design Elements:**

*   **Grooves:** The grooves should be evenly spaced. The spacing is dependent on the `number_of_frames` and `groove_width`. There should also be spacing between the grooves and the edges of the main cube of material.
*   **Indicators:** There should be triangular "arrow" indicators on the top and bottom edges of the plate, aligned with the start and end of the grooves. There should also be a set of indicators in the middle. There should be an indicator of the number of frames near one of the corners. It should show "x" followed by the number of frames, eg "x4" for a 4 frame design.

**Output Requirements:**

*   I'd like the OpenSCAD code to be parametric, allowing me to change the parameters.
*   The output should be a single .scad file, not a library or multiple files.

I'm hoping this can be generated as a single OpenSCAD file ready to be rendered. It doesn't need any external libraries (like MCAD, BOSL, or similar). Thank you!

[Assistant]
moire-animation-grating.scad:
```
// Customizable Moire Animation grating Generator
// preview[view:south, tilt:top];

/* [Frames] */
// Number of Frames
number_of_frames = 4;

/* [Dimentions] */
width = 100;
depth = 80;
height = 0.6;

// Groove Width
groove_width = 1;

// Indicator Height
indicator_height = 0.6;

//Roud Conner Radius
conerRadius = 5;

/* [Hidden] */
mask_width = groove_width*(number_of_frames-1);

grating_width = groove_width+mask_width;
grating_depth = depth-grating_width*3;

max_total_number = floor(width/grating_width);

total_number = max_total_number-2;
x0 = floor((width-grating_width*total_number)/2)+mask_width/2;
y0 = floor((depth-grating_depth)/2);

// Indicator
indicator_radius = grating_width*0.75;
indicator_width = indicator_radius*1.732;
indicator_depth = indicator_radius*1.5;

//Corner
conerHeight = height;

module groove() {
    for(i = [0:total_number-1]) {
        x = i*grating_width;
        translate([x, 0, 0])
            cube([groove_width, grating_depth, height]);
    }
}

module roundCorner() {
    difference() {
        cube([conerRadius, conerRadius, conerHeight]);

        translate([conerRadius, conerRadius, 0])
            cylinder(r=conerRadius, h=conerHeight, $fn=100);
    }
}

module indicator() {
    translate([0, 0, height])
    rotate([0, 0, -30])
    cylinder(r=indicator_radius, h=indicator_height, $fn=3);
}

module showNumberOfFrames() {
    linear_extrude(height = indicator_height) {
        text(text=str("x", number_of_frames), size=indicator_depth, $fn=100);
    }
}
difference() {
    union() {
        cube([width, depth, height]);

        //left indicators
        //top
        translate([x0+groove_width/2, depth-indicator_radius, 0])
        indicator();
        //bottom
        translate([x0+groove_width/2, indicator_radius, 0])
        rotate([0, 0, 180])
        indicator();

        //middle indicators
        //top
        translate([width/2, depth-indicator_radius, 0])
        indicator();
        //bottom
        translate([width/2, indicator_radius, 0])
        rotate([0, 0, 180])
        indicator();

        //right indicators
        //top
        lastGrooveX = x0+ grating_width*(total_number-1);

        translate([lastGrooveX+groove_width/2, depth-indicator_radius, 0])
        indicator();
        //bottom
        translate([lastGrooveX+groove_width/2, indicator_radius, 0])
        rotate([0, 0, 180])
        indicator();

        //Number of Frames
        translate([x0+indicator_width, (y0-indicator_depth)/2, height])
        showNumberOfFrames();

    }

    //groove
    translate([x0, y0, 0])
        groove();

    //left bottom round coner
    roundCorner();

    //left top round coner
    translate([0, depth, 0])
        rotate([0, 0, -90])
            roundCorner();

    //right bottom round coner
    translate([width, 0, 0])
        rotate([0, 0, 90])
            roundCorner();

    //right top round coner
    translate([width, depth, 0])
        rotate([0, 0, -180])
            roundCorner();
}

echo("");
echo("=========================");
echo(total_number=total_number);
echo("=========================");
echo("");
```


[User]
I'd like to design a mount for attaching zip ties to a 2020 aluminum extrusion, and I'd like it to be customizable for different screw sizes and zip tie dimensions.

Specifically, I need to be able to specify:

*   The mounting screw size (M2, M3, M4, M5, or M6)
*   The mounting screw head style (either button head cap or socket head cap).
*   The zip tie width and thickness.

The mount should have a base plate that sits against the 2020 extrusion and a way to attach it to the extrusion using a screw. It should also have a pair of slots or channels that a zip tie can run through - one parallel to the rail and one perpendicular. I'd like the edges to be rounded for a cleaner look. I'd also like a bit of tolerance built-in to allow for manufacturing inconsistencies.

The design should use the `dotSCAD` library specifically for the rounded primitives (`rounded_cube`, `rounded_cylinder`, and `rounded_square`). I'm not sure what you'd call it exactly but the design I'm thinking of has a base plate for the 2020 with a sort of rectangular block extruded above the mounting base. This upper block would contain the zip tie slots and screw mounting point. The overall design should be fairly compact.

[Assistant]
2020_zip_tie_mount.scad:
```
 /* 2020_zip_tie_mount.scad
  * Block for mounting a zip tie to a 2020 rail
  * The rounded methods require the dotSCAD library
  * https://github.com/JustinSDK/dotSCAD
  *
  * Use the customizer to select the mounting screw
  * size and zip tie dimensions.
  */

use <rounded_cube.scad>
use <rounded_cylinder.scad>
use <rounded_square.scad>

/* [Mounting screw] */

Mouinting_screw_size = 3; // [0:M2, 1:M3, 2:M4, 3:M5, 4:M6]

Screw_head_style = 0; // [0:Button head cap, 1:Socket head cap]

/* [Zip tie] */

Zip_tie_width = 5;

Zip_tie_thickness = 2;

/* [Manufacturing] */
// Allowance for plastic inaccuracies
Allowance = 0.3;

// Number of facets
$fn=64;

/* [Hidden] */
Zip_tie_width_a = Zip_tie_width + Allowance;
Zip_tie_thickness_a = Zip_tie_thickness + Allowance;

screw_table = [
  [ "Button head cap",
    [
      ["M2",   2.0,  3.5, 1.3,  8.0 ],
      ["M3",   3.0,  5.7, 1.65, 8.0],
      ["M4",   4.0,  7.6, 2.2,  8.0 ],
      ["M5",   5.0,  9.5, 2.75, 8.0],
      ["M6",   6.0, 10.5, 3.3,  8.0 ]
    ],
  ],
  [ "Socket head cap",
    [
      ["M2",   2.0,  4.0, 2.0, 8.0 ],
      ["M3",   3.0,  5.5, 3.0, 8.0 ],
      ["M4",   4.0,  7.0, 4.0, 8.0 ],
      ["M5",   5.0,  8.5, 5.0, 8.0 ],
      ["M6",   6.0, 10.0, 6.0, 8.0 ]
    ]
  ]
];

mounting_screw = screw_table[Screw_head_style][1][Mouinting_screw_size];

mounting_screw_dia        = mounting_screw[1]+Allowance;
mounting_screw_head_dia   = mounting_screw[2]+Allowance;
mounting_screw_head_depth = mounting_screw[3]+Allowance;
mounting_screw_length     = mounting_screw[4]+Allowance;

thick = 2+mounting_screw_head_depth;

module rail_plate(plate_len=20,plate_thick=6.3) {
  translate([0,0,plate_thick/2+1.5]) {
    rounded_cube(corner_r=1,[plate_len,20,plate_thick], center=true);
    // aligning bump along bottom
    translate([0,0,-plate_thick/2])
    difference() {
      rotate([-90,45,90])
        cube([6.4,6.4,plate_len-2],center=true);
      translate([0,0,5])
        cube([plate_len,20,10],center=true);
      translate([0,0,-6.5])
        cube([plate_len,20,10],center=true);
    }
  }
}

//rail_plate();

module zip_tie_holder() {
  top_dia = max(mounting_screw_head_dia+2,Zip_tie_width+6);
  difference() {
    union() {
      rail_plate(plate_thick=thick);
      translate([0,0,thick+.5])
      hull () {
        linear_extrude(.01)
        rounded_square(corner_r=1,[16,16], center=true);
        rounded_cylinder(radius=top_dia/2, round_r=1, h=Zip_tie_thickness_a+2);
      }
    }

    cube([8.5,10,3],center=true);

    cylinder(d=mounting_screw_dia,h=thick*6,center=true);
    translate([0,0,mounting_screw_length-5.0])
    cylinder(d=mounting_screw_head_dia,h=thick*6);

    translate([0,0,thick+Zip_tie_thickness_a/2+1.5]) {
      rounded_cube([30,Zip_tie_width_a,Zip_tie_thickness_a],corner_r=.3,center=true);
      rotate(90)
      rounded_cube([30,Zip_tie_width_a,Zip_tie_thickness_a],corner_r=.3,center=true);
    }
  }
}

zip_tie_holder();
```


[User]
Okay, I'm looking for a way to generate customizable pen rests. I have some specific requirements for the design, and I'm hoping you can help me create the necessary OpenSCAD files.

Essentially, I want a linear rest with cutouts where pens, brushes, etc., can sit. The main body of the rest should be customizable in terms of its shape, diameter, and length. I'd also like to be able to adjust how much of the rest is "submerged" (i.e., how much is below the table surface). Additionally, I want to be able to scale the body on the X and Z axes to make it fatter or taller.

The cutouts should also be customizable. I want to choose the shape of the cutout, the number of cutouts, the width of the cut, and the depth of the cut (relative to the main body). And, just like the main body, I'd like to be able to scale the cuts, this time in the Y and Z axes.

I need this to be a parametric design, so I can easily change these values and generate different pen rests. I also need to be able to change the quality of circles and cylinders via a `cyl_quality` parameter.

Here are the specific parameters I’d like to control:

**Body Parameters:**

*   `body_type`: An integer controlling the cross-sectional shape of the main body. Options should include: 0=Circle, 1=Triangle, 2=Square, 3=Axis Aligned Square, 4=Pentagon, 5=Hexagon, 6=Septagon, 7=Octagon, 8=Nonagon, 9=Decagon, 10=Hendecagon, 11=Dodecagon, 12=Trisdecagon, 13=Tetradecagon, 14=Pentadecagon, 15=Hexadecagon, 16=Heptadecagon, 17=Octadecagon, 18=Nonadecagon, 19=Icosagon
*   `body_diameter`: The outer diameter of the main body in millimeters.
*   `length`: The length of the main body in millimeters.
*   `submerge_percent`: The percentage of the main body to be "submerged".
*   `body_scaleX`: Scale percentage of the body in the X direction.
*   `body_scaleZ`: Scale percentage of the body in the Z direction.

**Cut Parameters:**

*   `cut_type`: An integer controlling the cross-sectional shape of the cutouts, using the same options as `body_type`.
*   `cut_count`: The number of cutouts.
*   `cut_diameter`: The width (diameter) of the cutout in millimeters.
*    `cut_depth`: The depth percentage of the cutout.
*   `cut_scaleY`: Scale percentage of the cut in the Y direction.
*   `cut_scaleZ`: Scale percentage of the cut in the Z direction.

**Quality Parameter:**

*   `cyl_quality`: Number of sides for circles and cylinders.

I don’t need any special libraries for this. It should be straightforward to implement using basic OpenSCAD primitives and looping constructs. I’m looking for the full set of SCAD files, and I would prefer if you used descriptive variable names so it's easy for me to follow the logic. I think I have made all of the necessary parameters clear, but please let me know if anything is confusing.

[Assistant]
PenRests.scad:
```
// Customizable pen/brush/tool rests

/* [Body_Parameters] */

// type of main body
body_type = 0;   // [ 0:Circle, 1:Triangle, 2:Square, 3:"Axis Aligned Square", 4:Pentagon, 5:Hexagon, 6:Septagon, 7:Octagon, 8:Nonagon, 9:Decagon, 10:Hendecagon, 11:Dodecagon, 12:Trisdecagon, 13:Tetradecagon, 14:Pentadecagon, 15:Hexadecagon, 16:Heptadecagon, 17:Octadecagon, 18:Nonadecagon, 19:Icosagon ]

// outer diameter of rest, in mm
body_diameter = 20;   // [ 5:200 ]

// length of rest, in mm
length = 65;   // [ 5:500 ]

// Amount of rest to cut off bottom, percentage
submerge_percent = 25;   // [ 0:99 ]

// body scale X, percentage
body_scaleX = 100;  // [ 1:500 ]

// body scale Z, percentage
body_scaleZ = 100;  // [ 1:500 ]

/* [Cut_Parameters] */

// type of cutout
cut_type = 0;   // [ 0:Circle, 1:Triangle, 2:Square, 3:"Axis Aligned Square", 4:Pentagon, 5:Hexagon, 6:Septagon, 7:Octagon, 8:Nonagon, 9:Decagon, 10:Hendecagon, 11:Dodecagon, 12:Trisdecagon, 13:Tetradecagon, 14:Pentadecagon, 15:Hexadecagon, 16:Heptadecagon, 17:Octadecagon, 18:Nonadecagon, 19:Icosagon ]

// number of cuts, integer
cut_count = 3;  // [ 1:10 ]

// width of cut, in mm
cut_diameter = 20;  // [ 2:200 ]

// depth of cut, percentage
cut_depth = 45;   // [ -100:200 ]

// cut scale Y, percentage
cut_scaleY = 100;  // [ 1:500 ]

// cut scale Z, percentage
cut_scaleZ = 100;  // [ 1:500 ]

/* [Quality_Parameters] */

// sides for circles/cylinders
cyl_quality = 100;   // [ 32:1000 ]

// End of Parameters

// Sanity checks
// end Sanity checks

sides_list = [ cyl_quality, 3, 4, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 ];
cut_sides = sides_list[ cut_type ];
body_sides = sides_list[ body_type ];

// our design on the XY plane for easy printing
translate([0,-length/2,0])
rest();

module rest() {

    radius = body_diameter / 2;
    cut_radius = cut_diameter / 2;

    submerge = submerge_percent / 100;
    cut_submerge = cut_depth / 100;

    body_alignment = (body_type == 3) ? 45 : 0;
    cut_alignment = (cut_type == 3) ? 45 : 0;

    difference() {

        // main body
        scale([ body_scaleX/100.0, 1.0, body_scaleZ/100.0] )
          translate([0,0,radius - body_diameter*submerge])
            rotate([-90,body_alignment-90,0])
              cylinder( length, radius, radius, $fn = body_sides );

        // rest cutouts
        for (k = [ 1 : 1 : (cut_count) ]) {

            //offset = length * k / (cut_count+1);  // doesn't use edges, too tightly packed in center
            offset = length * (k-0.5) / (cut_count);

            cut_height = (body_scaleZ/100.0) * body_diameter*(1-submerge)
                        + (cut_scaleZ/100.0) *(cut_radius - cut_diameter*cut_submerge);

            translate([-length/2,offset,cut_height])
              scale([ 1.0, cut_scaleY/100.0, cut_scaleZ/100.0] )
                 rotate([cut_alignment,0,0])
                   rotate([0,90,0])
                     cylinder( length, cut_radius, cut_radius, $fn = cut_sides );
        }

        // table cutoff - scale must be greater than percent scale allowed for body
        translate([-6*body_diameter/2,-2.5*length,-6*body_diameter])
          cube( [6*body_diameter, 6*length, 6*body_diameter] );

    }   // end difference

}   // end rest module

```


[User]
Okay, I'd like to have an OpenSCAD model generated that creates a corner frame, or corner holder, for materials like posterboard, foamcore, or even rulers. I have a pretty specific idea of how I want this to work, so let me lay out the details.

Essentially, I envision a frame composed of arms that come together at right angles. I need to be able to specify the number of arms (2, 3, or 4) using a variable called `legs`. I'd like each arm to have a variable length (`length`) and width (`width`).  Additionally, I need to be able to adjust the thickness of the material that will be inserted into the frame (e.g., the thickness of the foamcore) using a variable called `thickness`. Also, I want to control how far that material is inserted into the frame, using a variable called `inset`.

For added strength, there should be triangular gussets (supports) at each of the internal corners. The size of these gussets should be controllable with a variable `strength`.

Finally, I'd also like the option of including a slot for a base piece of material to slide into. This should be a boolean variable called `base_slot`. Additionally, I want to be able to specify whether this base slot is located at the "ground" of the object (for 3 and 4 legged versions) or in the middle, using the boolean variable `base_ground`.

I would really like for all the measurements to be in millimeters.

The corner frame itself should start at the origin. It will be constructed with its arms along the X, Y and Z axes (and the negatives of those axes). I plan on printing this in this orientation so it should be easy to 3d print.

I'm hoping the scad file includes some simple error checks for common mistakes like the inset being too big or the material being too thick. Nothing fancy, just a simple "echo" statement if a constraint is violated.

I think that's everything. I am hoping this is all within a single .scad file that will work with the OpenSCAD customizer, which is why I am specifying variables like `legs` and `inset` that need to be controllable via the GUI.

[Assistant]
CornerFrame.scad:
```
// Corner Frame for posterboard, foamcore, cardstock, rulers, etc.
//     Useful in 3D scanning and documentation of objects.

// Multiple frames could be used for science fair displays, or other simple signage.

//CUSTOMIZER VARIABLES

// number of legs on base
legs = 2;   // [ 2:Two, 3:Three, 4:Four ]

// length of each arm, in mm
length = 75;    // [1:1:1000]

// width of each arm, in mm
width = 15; // [1:1:50]

// thickness of board to insert, in mm
thickness = 5.0;  // [0.0:0.1:40.0]
//  DollarStore foamcore = 4.8 to 5.0mm
//  Posterboard = 0.2 to 1mm
//  Coroplast 3/16 = 4.76mm
//  Cardstock = 0.2mm
//  plastic ruler = 1.5mm

// how far to insert board, in mm
inset = 4.0;  // [0:0.1:30.0]

// size of strength angles, in mm
strength = 20;    // [0:1:50]

// make a slot for the base (XY plane), boolean
base_slot = 1;      // [0:false,1:true]

// base slot should be on the ground, boolean
base_ground = 0;      // [0:false,1:true]

//CUSTOMIZER VARIABLES END

// Sanity checks
if( 3*inset >= width)
{
    echo("<B>Error: Inset too large for width, won't be solid.</B>");
}
if( thickness >= width )
{
    echo("<B>Error: Too thick for width.</B>");
}
if( length < strength )
{
    echo("<B>Error: This is going to look funny.</B>");
}
// end Sandity checks

// our object, on the XY plane for printing
corner_frame();

module corner_frame() {

    difference() {

        // main frame
        union() {
            cube([length+width,width,width]);
            cube([width,length+width,width]);
            cube([width,width,length+width]);
            if (legs > 2) {
              translate([0,-length,0])
                cube([width,length+width,width]);
              if (legs > 3) {
                translate([-length,0,0])
                  cube([length+width,width,width]);
              }      // end if legs > 3
            }   // end if legs > 2

            // triangles for strength
            if (strength > 0) {
                hull() {
                    translate([width,width,width])
                      rotate([0,-90,0])
                        linear_extrude(width)
                          polygon( [ [0, strength], [strength, 0], [0, 0] ] );
                    translate([width,width,width])
                      rotate([90,0,0])
                        linear_extrude(width)
                          polygon( [ [0, strength], [strength, 0], [0, 0] ] );
                    translate([width,width,0])
                      linear_extrude(width)
                        polygon( [ [0, strength], [strength, 0], [0, 0] ] );
                    if (legs > 2) {
                      translate([0,0,width])
                        rotate([0,-90,180])
                          linear_extrude(width)
                            polygon( [ [0, strength], [strength, 0], [0, 0] ] );
                      translate([width,0,0])
                       rotate([0,0,-90])
                         linear_extrude(width)
                           polygon( [ [0, strength], [strength, 0], [0, 0] ] );
                      if (legs > 3) {
                        translate([0,0,width])
                          rotate([90,0,180])
                            linear_extrude(width)
                              polygon( [ [0, strength], [strength, 0], [0, 0] ] );
                        translate([0,0,0])
                          rotate([0,0,180])
                            linear_extrude(width)
                              polygon( [ [0, strength], [strength, 0], [0, 0] ] );
                        translate([0,width,0])
                          rotate([0,0,90])
                            linear_extrude(width)
                              polygon( [ [0, strength], [strength, 0], [0, 0] ] );
                      }      // end if legs > 3
                    }   // end if legs > 2
                } // end hull
            }   // end if strength

        }   // end union

        if (thickness > 0.0) {

            // upper slots for board
            translate([width/2-thickness/2,width-inset,width-inset])
                cube([thickness,length+width+1,length+width+1]);
            translate([width-inset,width/2-thickness/2,width-inset])
                cube([length+width+1,thickness,length+width+1]);
            if (legs > 2) {
              translate([width/2-thickness/2,-length-width+inset-1,width-inset])
                cube([thickness,length+width+1,length+width+1]);
              if (legs > 3) {
                translate([-length-width+inset-1,width/2-thickness/2,width-inset])
                  cube([length+width+1,thickness,length+width+1]);
              }      // end if legs > 3
            }   // end if legs > 2

            if (base_slot) {
                if (base_ground) {
                  translate([width-inset,width-inset,-0.1])
                    cube([length+width+1,length+width+1,thickness+0.1]);
                    if (legs > 2) {
                      translate([width-inset,-length-width+inset-1,-0.1])
                        cube([length+width+1,length+width+1,thickness+0.1]);
                      if (legs > 3) {
                        translate([-length-width+inset-1,width-inset,-0.1])
                          cube([length+width+1,length+width+1,thickness+0.1]);
                        translate([-length-width+inset-1,-length-width+inset-1,-0.1])
                          cube([length+width+1,length+width+1,thickness+0.1]);
                      }      // end if legs > 3
                    }   // end if legs > 2
                } else {    // if base_ground
                  translate([width-inset,width-inset,width/2-thickness/2])
                    cube([length+width+1,length+width+1,thickness]);
                    if (legs > 2) {
                      translate([width-inset,-length-width+inset-1,width/2-thickness/2])
                        cube([length+width+1,length+width+1,thickness]);
                      if (legs > 3) {
                        translate([-length-width+inset-1,width-inset,width/2-thickness/2])
                          cube([length+width+1,length+width+1,thickness]);
                        translate([-length-width+inset-1,-length-width+inset-1,width/2-thickness/2])
                          cube([length+width+1,length+width+1,thickness]);
                      }      // end if legs > 3
                    }   // end if legs > 2
                }   // end if base_ground
            }   // end if base_slot

        }  // end if thickness > 0

    }   // end difference

}   // end corner_frame

```


[User]
Hey, I'd like a customizable card dispenser, similar to the one described here: [link to thingiverse description]. I need it to be parametric so I can adjust it for different card sizes and stack heights. Here are the key parameters I'd like to be able to control:

*   `Playing_Card_Width`:  The width of the cards.
*   `Playing_Card_Height`: The height of the cards.
*   `Deck_Height`: How tall the stack of cards is, which will determine the depth of the compartment.
*   `Number_of_Decks`: The number of card compartments, in case I want multiple stacks. This should rotate so it's printable when > 1.
*   `Tilt_X_Angle`: The angle of the card deck tilt along the X-axis.
*   `Tilt_Y_Angle`: The angle of the card deck tilt along the Y-axis.
*   `Material_Thickness`:  The thickness of the material used.
*   `Thumb_Hole_Radius`: The radius of a thumb hole to help pull out cards (0 for none).
*   `Top_Cover`:  A boolean for adding a cover, which also should rotate for printing
*    `Left_Handed`: A boolean to flip the design for left-handed players.

I'd like the design to use a basic base plate with walls around it, and a thumb hole in the front if `Thumb_Hole_Radius` is greater than zero. It would be nice if the walls had rounded corners, similar to the provided example. The deck area(s) need to be tilted according to `Tilt_X_Angle` and `Tilt_Y_Angle` parameters. I also would need a cover over the whole thing if `Top_Cover` is set to true, and it should be built in a way that makes it printable. Can you generate the .scad code for this? I don't need any external libraries.

[Assistant]
codeandmake.com_Quick_Draw_Card_Dispenser_v1.0.scad:
```
/*
 * Copyright 2020 Code and Make (codeandmake.com)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/*
 * Quick Draw Card Dispenser by Code and Make (https://codeandmake.com/)
 *
 * https://www.thingiverse.com/thing:4650188
 *
 * Quick Draw Card Dispenser v1.0 (11 November 2020)
 */

// The width of your playing cards
Playing_Card_Width = 58; // [20:1:200]

// The height of your playing cards
Playing_Card_Height = 88; // [20:1:200]

// The height of your deck (increase slightly above actual height of deck)
Deck_Height = 20; // [10:1:100]

// Number of decks (will rotate for printing if > 1)
Number_of_Decks = 1; // [1:1:5]

// Deck tilt angle along X
Tilt_X_Angle = 5; // [0:1:45]

// Deck tilt angle along Y
Tilt_Y_Angle = 5; // [0:1:45]

// Minimum thickness of the material
Material_Thickness = 3; // [1:1:5]

// Radius of the thumb hole (0 for none)
Thumb_Hole_Radius = 30; // [0:1:200]

// Add a cover (will rotate for printing)
Top_Cover = false;

// Flip for left-handed players
Left_Handed = false;

module cardHolder() {
  $fn = 100;

  playingCardWidth = min(Playing_Card_Width, Playing_Card_Height);
  playingCardHeight = max(Playing_Card_Width, Playing_Card_Height);
  thumbHoleRadius = min(Thumb_Hole_Radius, playingCardWidth - (Material_Thickness * 2), playingCardHeight - (Material_Thickness * 2));

  module wallCorner(height, forceShere) {
    intersection() {
      cube([Material_Thickness, Material_Thickness, height + (Material_Thickness * 2)]);

      translate([Material_Thickness, Material_Thickness, 0]) {
        hull() {
          cylinder(r = Material_Thickness, h = Material_Thickness);

          translate([0, 0, height]) {
            if (Top_Cover) {
              translate([0, 0, Material_Thickness]) {
                if (forceShere) {
                  sphere(r = Material_Thickness);
                } else {
                  intersection() {
                    rotate([90, 0, 0]) {
                      cylinder(r = Material_Thickness, h = Material_Thickness);
                    }

                    cylinder(r = Material_Thickness, h = Material_Thickness);
                  }
                }
              }
            } else {
              sphere(r = Material_Thickness);
            }
          }
        }
      }
    }
  }

  module wall(length, height) {
    hull() {
      wallCorner(height);

      translate([0, length + Material_Thickness, 0]) {
        rotate([0, 0, -90]) {
          wallCorner(height, true);
        }
      }
    }
  }

  module leftWall(height) {
    wall(playingCardHeight, height);
  }

  module rearWall(height) {
    translate([playingCardWidth + Material_Thickness, playingCardHeight + Material_Thickness, 0]) {
      mirror([1, 1, 0]) {
        wall(playingCardWidth, height);
      }
    }
  }

  module basePlate() {
    intersection() {
      translate([Material_Thickness, 0, 0]) {
        cube([playingCardWidth, playingCardHeight, Material_Thickness]);
      }

      difference() {
        union() {
          translate([Material_Thickness, Material_Thickness, 0]) {
            cube([playingCardWidth - Material_Thickness, playingCardHeight - Material_Thickness, Material_Thickness]);
          }

          hull() {
            // front left
            translate([Material_Thickness, Material_Thickness, 0]) {
              cylinder(r = Material_Thickness, h = Material_Thickness);
            }

            if(!thumbHoleRadius) {
              translate([playingCardWidth, Material_Thickness, 0]) {
                cylinder(r = Material_Thickness, h = Material_Thickness);
              }
            } else {
              // front right (front)
              translate([playingCardWidth - Material_Thickness - thumbHoleRadius, Material_Thickness, 0]) {
                cylinder(r = Material_Thickness, h = Material_Thickness);
              }
            }
          }

          hull() {
            // rear right
            translate([playingCardWidth, playingCardHeight, 0]) {
              cylinder(r = Material_Thickness, h = Material_Thickness);
            }

            if(!thumbHoleRadius) {
              translate([playingCardWidth, Material_Thickness, 0]) {
                cylinder(r = Material_Thickness, h = Material_Thickness);
              }
            } else {
              // front right (right)
              translate([playingCardWidth, (Material_Thickness * 2)  + thumbHoleRadius, 0]) {
                cylinder(r = Material_Thickness, h = Material_Thickness);
              }
            }
          }
        }

        // thumb hole
        translate([playingCardWidth, Material_Thickness, - 1]) {
          cylinder(r = thumbHoleRadius, h = Material_Thickness + 2);
        }
      }
    }
  }

  module basePlateWithWall() {
    basePlate();

    intersection() {
      cube([Material_Thickness, playingCardHeight + Material_Thickness, Material_Thickness]);
      leftWall(Material_Thickness * 2);
    }

    intersection() {
      translate([0, playingCardHeight, 0]) {
        cube([playingCardWidth + Material_Thickness, Material_Thickness, Material_Thickness]);
      }
      rearWall(Material_Thickness * 2);
    }
  }

  matrix = [
    [ 1, 0, 0, 0 ],
    [ 0, 1, 0, 0 ],
    [ sin(Tilt_X_Angle), -sin(Tilt_Y_Angle), 1, 0 ], // skew values; pushed along the z axis
    [ 0, 0, 0, 1 ]  // not used in OpenSCAD and should be [ 0, 0, 0, 1 ]
  ];

  // deck compartment(s)
  translate([0, playingCardHeight + Material_Thickness, 0]) {
    multmatrix(matrix) {
      translate([0, -(playingCardHeight + Material_Thickness), 0]) {
        for (i=[0:Number_of_Decks + (Top_Cover ? 0 : - 1)]) {
          translate([0, 0, i *(Deck_Height + Material_Thickness)]) {
            basePlate();
          }
        }

        leftWall(((Deck_Height + Material_Thickness) * Number_of_Decks) - Material_Thickness);
        rearWall(((Deck_Height + Material_Thickness) * Number_of_Decks) - Material_Thickness);
      }
    }
  }

  intersection() {
    // plenty of height to clear max size and angles
    linear_extrude(height = (playingCardHeight * 2) + (playingCardWidth * 2), convexity=10) {
      projection(cut = false) {
        basePlateWithWall();
      }
    }

    // base
    hull() {
      basePlateWithWall();

      translate([0, playingCardHeight + Material_Thickness, 0]) {
        multmatrix(matrix) {
          translate([0, -(playingCardHeight + Material_Thickness), 0]) {
            basePlateWithWall();
          }
        }
      }
    }
  }
}

mirror([(Left_Handed ? 1 : 0), 0, 0]) {
  rotate([(Top_Cover || Number_of_Decks > 1 ? - 90 : 0), (Top_Cover || Number_of_Decks > 1 ? - 90 : 0), 0]) {
    cardHolder();
  }
}

```


[User]
Hey, I'm looking to create a 3D printable Spotify code using OpenSCAD, and I need a parametric design that I can customize. I've already got the basic workflow down - generating the SVG from Spotify's website, cleaning it up in Inkscape, and all that.

Here's what I need the OpenSCAD design to do:

*   **Import SVG:** It needs to import an SVG file that represents the Spotify code. I will provide the name of the file as a parameter.
*   **Extrusion:** The code needs to be extruded to a specified thickness.
*   **Plate:** There should be a base plate surrounding the code, essentially a backing. The thickness of this plate should also be adjustable.
*   **Keychain Option:** I want the option to make it into a keychain. When selected, the design should generate a rounded rectangular section with a hole for a keyring. This portion should be a separate module/function within the scad file, but it should automatically be combined with the rest. If the keychain option is *not* selected, there should instead be corner pillars that hold the base plate.
*   **Parameters:** I need to be able to specify several parameters:
    *   SVG file name
    *   Thickness of the base plate
    *   Thickness of the extruded code
    *   A boolean option to enable or disable the keychain feature.
*   **File:** Just put all of the design into one `.scad` file, and please don't use any libraries.

So basically, I want a user-friendly parametric Spotify code generator in OpenSCAD, that I can easily update with the parameters.

[Assistant]
spotifyCode.scad:
```
//Enter the name of the SVG file
fileName = "spcode.svg";
//Thickness of the plate
thicknessPlate = 2;
//Thickness of the code
thicknessCode = 2;
//This is a keychain
key = "No"; //[Yes,No]

linear_extrude(thicknessCode+0.2)translate([5,0,thicknessCode/2]) scale([0.46,0.46,1]) import(fileName);

if(key == "Yes"){
    difference(){
        hull(){
            translate([2,10,-thicknessPlate+0.2])cylinder(thicknessPlate,1,1,$fn = 40);
            translate([2,16,-thicknessPlate+0.2])cylinder(thicknessPlate,1,1,$fn = 40);
            translate([8,16,-thicknessPlate+0.2])cylinder(thicknessPlate,1,1,$fn = 40);
            translate([8,10,-thicknessPlate+0.2])cylinder(thicknessPlate,1,1,$fn = 40);
        }
        translate([4,13,-thicknessPlate-0.5])cylinder(thicknessPlate+1,1.8,1.8,$fn = 40);
    }
}
else;

hull(){
    translate([8,2,-thicknessPlate+0.2])cylinder(thicknessPlate,2,2,$fn = 40);
    translate([106,2,-thicknessPlate+0.2]) cylinder(thicknessPlate,2,2,$fn = 40);
    translate([8,24,-thicknessPlate+0.2])cylinder(thicknessPlate,2,2,$fn = 40);
    translate([106,24,-thicknessPlate+0.2])cylinder(thicknessPlate,2,2,$fn = 40);
}
```


[User]
I'd like to create some customizable sorting boxes, similar to the E63/E45 standard sizes. I need them to be parametric, so I can easily adjust the dimensions and add dividers.

Here's what I'm looking for:

1.  **Standard Sizes:** I want the option to select from pre-configured E63 (height 63mm) and E45 (height 45mm) sizes. These should have a base length and width of 54mm by default, although that should be configurable.
2.  **Custom Sizes:** If I don't want to use a standard size, I need to be able to specify a custom base length, base width, and height.
3.  **Scaling Factors:** The base length and width should be scalable by a factor. So, I can say the length is twice the base size, the width is 1.5 times the base, and so on.
4.  **Wall Thickness:** I'll need to set the wall thickness of the box.
5.  **Inner Dividers:** I'd like the ability to add dividers in both the length and width directions, specifying how many to add for each.
6. **Rounded Corners**: The corners of the box should have rounded corners, with both the external and internal corners being configurable with different radii.
7. **No Libraries:** I want this in a single .scad file, without relying on any libraries. It should be fully self-contained.

Can you create this for me?

[Assistant]
Sorting_NormBox.scad:
```
// Create standardized E63 / E45 sorting boxes
//   - with configurable sub-dividers
//   - or a a custom size

/* [Main settings] */

// box norm (i.e. box height or select custom)
norm_height = 0; // [63:E63, 45:E45, 0:Use Custom settings]

// factor in length, N times base size (=54mm or custom base length)
length_factor = 1; // [0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6]

// factor in width, N times base size (=54mm or custom base width)
width_factor = 1;  // [0.5, 1, 1.5, 2, 2.5, 3]

// wall thickness
thn_wall = 1.2;

/* [Use custom dimensions] */

// set a custom base length.
custom_base_length = 40;

// set a custom base width.
custom_base_width = 40;

// set specific height
custom_height = 40;

/* [Add inner dividers] */

// sub-divide length
n_length_dividers = 0;

// sub-divide width
n_width_dividers = 0;

/* [Hidden] */

base_size = 54;
bottom_offset = 1.25;
rim_offset = 0.5;
rim_height = 6;
r_outer_corner = 4;
r_inner_corner = 2.5;

width = (norm_height == 0 ? custom_base_width : base_size) * width_factor;
echo("width: ", width);
length = (norm_height == 0 ? custom_base_length : base_size) * length_factor;
echo("length: ", length);
height = norm_height == 0 ? custom_height : norm_height;

difference() {
    outer_case();
    inner_case();
}

if (n_length_dividers>0) {
    echo("n_length_dividers: ", n_length_dividers);
    for (i=[1:n_length_dividers]) {
        offset = i * length/(n_length_dividers+1) - length/2;
        translate([offset, 0, 0])
            length_divider();
    }
}

if (n_width_dividers>0) {
    echo("n_width_dividers: ", n_width_dividers);
    for (i=[1:n_width_dividers]) {
        offset = i * width/(n_width_dividers+1) - width/2;
        echo("offset: ", offset);
        translate([0, offset, 0])
            width_divider();
    }
}

module outer_case() {
    translate([0, 0, height-rim_height])
        rounded_cube(length, width, rim_height, r_outer_corner, center_xy=true);

    hull() {
        translate([0, 0, height-thn_wall])
            rounded_cube(length-2*rim_offset, width-2*rim_offset, thn_wall, r_outer_corner, center_xy=true);

        rounded_cube(length-2*bottom_offset, width-2*bottom_offset, thn_wall, r_outer_corner, center_xy=true);
    }
}

module inner_case() {

    translate([0, 0, thn_wall]) {
        hull() {
            translate([0, 0, height-thn_wall])
                rounded_cube(length-2*rim_offset-2*thn_wall, width-2*rim_offset-2*thn_wall, thn_wall, r_inner_corner, center_xy=true);

            rounded_cube(length-2*bottom_offset-2*thn_wall, width-2*bottom_offset-2*thn_wall, thn_wall, r_inner_corner, center_xy=true);
        }
    }

}

module length_divider() {

    translate([0, 0, thn_wall/2]) {
        hull() {
            translate([0, 0, height-thn_wall])
                cube([thn_wall, width-2*rim_offset-2*thn_wall, thn_wall], center=true);

            cube([thn_wall, width-2*bottom_offset-2*thn_wall, thn_wall], center=true);
        }
    }
}

module width_divider() {

    translate([0, 0, thn_wall/2]) {
        hull() {
            translate([0, 0, height-thn_wall])
                cube([length-2*rim_offset-2*thn_wall, thn_wall, thn_wall], center=true);

            cube([length-2*bottom_offset-2*thn_wall, thn_wall, thn_wall], center=true);
        }
    }
}

module rounded_cube(x, y, z, r, center_xy=false, center_z=false) {
    x_center = center_xy == false ? 0 : -x/2;
    y_center = center_xy == false ? 0 : -y/2;
    z_center = center_z == false ? 0 : -z/2;

    translate([x_center, y_center, z_center]) {
        translate([r, r, 0])
        linear_extrude(height = z, twist = 0, slices = 10) {
             offset(r = r, chamfer=true) {
                square([x-2*r, y-2*r], center = false);
             }
        }
    }
}
```


[User]
Hi! I'm looking to create a parametric adapter for connecting a shop vac hose to various power tool dust ports. I've got a basic idea in mind, and I think OpenSCAD should be perfect for it. I need something that can generate a three-sectioned adapter: a bottom nozzle, a mid-section, and a top nozzle. These sections should be cylinders, but the bottom and top nozzles will be tapered. I need to be able to adjust the diameters and lengths of all three sections, as well as the wall thickness of the adapter itself.

Specifically, I need parameters for:

*   **Wall Thickness:** This will control the overall thickness of the adapter wall.
*   **Top Nozzle Outer Diameters:** I need to control the start and end outer diameters of the top nozzle.
*   **Top Nozzle Length:** This will control the length of the top nozzle section.
*   **Mid Section Outer Diameters:** I need to control the start and end outer diameters of the mid section.
*   **Mid Section Length:** This will control the length of the mid section.
*   **Bottom Nozzle Outer Diameters:** I need to control the start and end outer diameters of the bottom nozzle.
*    **Bottom Nozzle Length:** This will control the length of the bottom nozzle section.
*    **Number of Faces:** This will control the resolution of the curves.

The final adapter should be hollow. The walls should be uniform in thickness throughout. I am envisioning this will be constructed from a series of differenced cylinders stacked vertically. Can you generate an OpenSCAD file that does this? I don't need any additional features such as threads, but the more accurate and well-written the file is, the more useful it will be. I'm not using any external libraries at this time. Thanks!

[Assistant]
DustportAdapter.scad:
```
// Set the thickness of the adapter wall
wall_thickness = 3; // [1:20]

// Set the end diameter of the top section
TOP_OD1 = 28; // [1:200]
// Set the diameter top/mid section joint
TOP_OD2 = 30; // [1:200]
// Set the length of the top nozzle section
TOP_LENGTH = 80; // [1:200]

// Set the length of the mid section
MID_LENGTH = 30; // [1:200]

// Set the diameter mid/bottom section joint
BOTTOM_OD1 = 38; // [1:200]
// Set the end diameter of the top section
BOTTOM_OD2 = 40; // [1:200]
// Set the length of the bottom nozzle section
BOTTOM_LENGTH = 60; // [1:200]

/* [Hidden] */
faces = 100;

union() {

// The bottom cone

    difference() {
        cylinder(r1 = BOTTOM_OD1, r2 = BOTTOM_OD2, h = BOTTOM_LENGTH, $fn = faces);
        cylinder(r1 = BOTTOM_OD1-wall_thickness, r2 = BOTTOM_OD2 - wall_thickness, h = BOTTOM_LENGTH, $fn = faces);
        }
        // mid section
    translate([0, 0, BOTTOM_LENGTH])
     difference(){
        cylinder(r1 = BOTTOM_OD2, r2 = TOP_OD2, h = MID_LENGTH, $fn = faces);
        cylinder(r1 = BOTTOM_OD2-wall_thickness, r2 = TOP_OD2 - wall_thickness, h = MID_LENGTH, $fn = faces);
     }
      // top section
    translate([0, 0, (BOTTOM_LENGTH + MID_LENGTH)])
     difference(){
        cylinder(r1 = TOP_OD2, r2 = TOP_OD1, h = TOP_LENGTH, $fn = faces);
        cylinder(r1 = TOP_OD2-wall_thickness, r2 = TOP_OD1 - wall_thickness, h = TOP_LENGTH, $fn = faces);
     }
}

```


[User]
Okay, I'm looking to create a parametric design for a mini gold sluice box, similar to the one described in the MiniSluiceBox.scad file you can see on Thingiverse. I want to be able to adjust all the key dimensions to fit my needs and printer. I'd like the design to be modular, with a separate box, spray bar, and riffle mat, just like the original. It would be great if these could be generated separately or all at once.

Here's a breakdown of what I need, mirroring the parameters in the existing SCAD file:

**Overall Parameters:**

*   A `part` parameter to select which part to generate (0: All, 1: Box, 2: Spray Bar, 3: Mat).
*   A `wall` parameter to define the wall thickness.
*   A `width` parameter for the overall width of the sluice box.
*   A `length` parameter for the overall length of the sluice box.
*   A `tol` parameter for a tolerance value, likely for fitting parts together.

**Box Specific Parameters:**

*   An `angle` parameter to control the angle of the box floor in degrees.
*   A `lipHeight` parameter for the height of a locking lip at the bottom of the box.
*   An `openEnd` parameter for the size of a water flow opening at the bottom end of the box.

**Spray Bar Specific Parameters:**

*   A `barDia` parameter for the outer diameter of the spray bar.
*   A `barInDia` parameter for the inner diameter of the spray bar.
*   A `barHoleDia` parameter for the diameter of the water outlet holes.
*   A `barHoleSpace` parameter for the spacing between water outlet holes.
*   A `barExtend` to allow for raising the bar to clear the top of stacked boxes.

**Mat Specific Parameters:**

*   A `matType` parameter to select the riffle pattern (1: Blank, 2: Ribs, 3: Sawtooth, 4: Vortex).
*   A `matHeight` parameter for the overall height of the mat.
*   A `riffleHeight` parameter for the height of the riffles.
*   A `riffleSpacing` parameter for the spacing between riffles.
*   A `riffleSize` parameter for controlling the size of the riffle pattern - this will likely need different values depending on the `matType`. For example, a vortex mat may need a value close to 12, while a rib or sawtooth pattern needs a smaller number.

I'd like the code to be easily customizable, much like the original, and be fully parametric, so if any one of these parameters changes, it should affect the entire design of the selected object. I'd also prefer that you use comments in the code explaining what each part does and what each parameter means, especially for less obvious calculations.

I don't want to rely on any external libraries beyond what is normally included in OpenSCAD, so please don't assume that I'll have access to external ones like MCAD, BOSL, etc. Let me know if you have questions.

[Assistant]
MiniSluiceBox.scad:
```
/**
 * Title:   Mini Gold Sluice Box
 * Version: 2.1
 * Author:  http://www.tropotek.com/
 * Date:    2021-06-10
 * Licence: http://creativecommons.org/licenses/by-nc-sa/4.0/
 * Web:     https://www.thingiverse.com/thing:4655906
 *
 * Directions:
 *
 *
 */

/* [Main] */
// Select the part to genereate. It is recommended to use TPU (Nijaflex) For the mat.
part = 0;                 // [0:All,1:Box,2:Spray Bar,3:Mat]
// The wall thickness
wall = 4;                 //
// Width of the sluice box (add 8mm to match v1.0 of the project IE: v1.0 -> 152 = v2.0 160)
width = 160;              //
// Height of the sluice box (add 8mm to match v1.0 of the project IE: v1.0 -> 195 = v2.0 203)
length = 203;             //
// Adjustment tollorace to add spaces and allow boxes to fit better.
tol = 0.2;                //

/* [Box] */
// The riffle mat angle in degrees, this will determin the Box height
angle = 5.0;              //
// The height of the locking lip at the bottom
lipHeight = 6;            //
// Floor water flow opening
openEnd = 10;             //

/* [Spray Bar] */
// Spray Bar Outer diameter (The hose should fit over this diameter)
barDia = 22;              //
// Spray Bar inner diameter. (Reduce to restric flow as needed)
barInDia = 17;            //
// center water outlets diameter
barHoleDia = 3;           //
// water hole spacing
barHoleSpace = 7;         //
// Make the bar higher
barExtend = 10;            //

/* [Mat] */
// Select the type of riffe pattern
matType = 2;              //  [1:Blank,2:Ribs,3:Sawtooth,4:vortex]
// Hight of the riffles on the slice mat
matHeight = 0.2;          //
// Hight of the riffles on the slice mat
riffleHeight = 0.6;       //
// Spacing between each riffle
riffleSpacing = 8;        //
// Size of the riffle pattern (Change this to a high value for the vortex mat EG: 13.0)
//riffleSize = 0.8;         // Rib
//riffleSize = 2.8;       // Saw
riffleSize = 12;        // vortex

/* [Hidden] */
$fn = 30;
//rotate([0, 0, 180])
  main(part);

/**
 * @param int mode (default: 0) Draw the entire model or parts
 */
module main(mode=0) {

  spacer = wall*2;    // Space between main parts
  //spacer = 0;    // Space between main parts

  // Calc height from floor
  ceh = tan(angle)*(length);
  // Hypotenuse
  hyp = sqrt(pow(ceh, 2) + pow(length, 2));
  // Water head height
  wh = length/10;
  h = ceh+wh;
  hh = matHeight*2;

  matWidth = width-wall*2-(wall/2)-tol*2;

  //barExtend = 5;

  np = (length)-((length)/5)-barDia-wall/2+tol*2-(tol*4);       // Notch position
  hyp2 = sqrt(pow(ceh, 2) + pow(length-barDia-openEnd-wall/2, 2));  // Mat Hyp

  if (mode > 0) { // draw printable parts in position
    if (mode == 1) { // Box
      translate([0, 0, 0]) rotate([0, 0, 0])
        msbBox(length, width, wall, angle, openEnd, matHeight, lipHeight, tol);
    } else if (mode == 2) {  // Bar
        color("white")
          translate([barDia, 0, barDia+lipHeight])
            rotate([0, 180, 0])
              msbSprayBar(width, barExtend, wall, lipHeight, barDia, barInDia, barHoleDia, barHoleSpace);
    } else if (mode == 3)  { // Mat
        color("lightgreen")
          translate([0, 0, 0]) rotate([0, 0, 0])
            //msbMat(matType, length, width, matHeight, [riffleHeight, riffleSize, riffleSpacing], np, 5, 2);
          msbMat(matType, hyp2-(tol*4), matWidth, matHeight, [riffleHeight, riffleSize, riffleSpacing], np, 5, 2);
    }
  } else { // Design View of model

    // Bar
    color("white") translate([0, 0, (ceh+wh+tol-lipHeight)+spacer])
      msbSprayBar(width, barExtend, wall, lipHeight, barDia, barInDia, barHoleDia, barHoleSpace);

    // Box
    msbBox(length, width, wall, angle, openEnd, matHeight, lipHeight, tol);
    color("pink")
      translate([length, width, -h+lipHeight-spacer]) rotate([0, 0, 180])
        msbBox(length, width, wall, angle, openEnd, matHeight, lipHeight, tol);

    // Mat
    //hyp2 =  sqrt(pow(ceh, 2) + pow(length-barDia-openEnd-wall/2, 2));
    color("lightgreen")
      //translate([wh+wall+hh, wall+(tol*8), ceh+matHeight+riffleHeight+1])
      translate([wh+wall+hh, (width-matWidth)/2, ceh+matHeight+riffleHeight+1])
        rotate([0, angle, 0]) translate([0, 0, 0])
          msbMat(matType, hyp2-(tol*4), matWidth, matHeight, [riffleHeight, riffleSize, riffleSpacing], np, 5, 2);

  }
}

/**
 *
 * @param length        The X length of the box
 * @param width         The Y width of the box
 * @param t             The wall thickness
 * @param angle         The floor angle (this will determin the side wall height)
 * @param openEnd       The size of the opening at the end of the box
 * @param matHeight     The mat height to set the mat holders
 * @param lip           The size of the box top/bottom fitting lip
 * @param tol           The error tollorance value to add space to fit boxes
 */
module msbBox(
  length = 195,
  width = 152,
  t = 4,
  angle = 6.0,
  openEnd = 10,
  matHeight = 0.4,
  lip = 6,
  tol = 0.2
)
{
  // Calc height from floor
  ceh = tan(angle)*(length);
  // Hypotenuse
  hyp = sqrt(pow(ceh, 2) + pow(length, 2));
  // Water head length
  wh = length/10;
  // Mat holder height
  hh = matHeight*4;

  difference() {
    union() {
      // Box body
      _msbBox(length, width, ceh+t, t);
      // Box upper section
      translate([0, 0, ceh+t]) _msbBox(length, width, wh/2, t);
      // Box top lip
      translate([0, 0, ceh+t+wh/2]) _msbBox(length+0.02, width+0.02, lip, (t/2)-tol*2);

      // Side mat notches for locking mat into position
      np = (length)-((length)/5);       // Notch position
      nd = 3;                         // Notch diameter
      nh = ceh-( tan(angle) * np ); // Notch height
      translate([np, 0, nh+t/2]) {
        translate([0, t, 0]) cylinder(d=nd, h=ceh-nh);
        translate([0, width-t, 0]) cylinder(d=nd, h=ceh-nh);
      }

      // Floor supports
      sh1 = (tan(angle)*(openEnd));
      translate([length-openEnd-t*2, t, 0])
        cube([t*2, width-t*2, sh1+t/2]);
      sh2 = (tan(angle)*(length-(length/3)));
      translate([(length/3), t, 0])
        cube([t*2, width-t*2, sh2+t/2]);

      // Angled Floor parts
      translate([0, 0, ceh]) {
        // Water head ramp
        translate([0, 0, t/2]) {
          difference() {
            union() {
              translate([t, t, 0]) rotate([0, 0, 0]) cube([wh, width-t*2, wh]);
            }
            translate([wh/2+t, width-t+0.1, wh/2])
              rotate([90, 0, 0]) cylinder(h=width-t*2+2, d=wh);
            translate([t-0.02, t-0.02, wh/2-0.01])
              cube([wh+0.04, width-t*2+0.04, wh/2+0.02]);
            translate([t+wh/2+0.01, t-0.01, -0.002])
              cube([wh/2, width-t*2+0.02, wh/2+0.02]);
          }
        }
      }

      translate([0, 0, ceh]) rotate([0, angle, 0])  {
        difference() {
          union() {
            // Floor
            cube([hyp-openEnd, width, t]);
            // Header
            translate([t, t, hh]) cube([wh+(width/2), width-t*2, t]);
          }

          // Mat position holder die
          ww = width-t*2;
          translate([wh+t, t, t-0.1]) _msbMatDie(ww, ww, t+0.8, 0.92);
        }
      }

    }

    // Box bottom Lip
    translate([-0.01, -0.01, -0.001]) _msbBox(length+0.02, width+0.02, lip, (t/2)+tol*2);

  }

}

module  _msbMatDie(w, l, h, scale = 0.95) {
  translate([l/2, w/2, 0])
    linear_extrude(height=h, scale=scale)
      square([l, w], true);
}

// Deprecated: use the _msbMatDie() and just cutout the holders from a cube surronding
module _msbMatHolder(w = 100, h=2) {

  translate([0, w, 0]) rotate([90, 0, 0]) {
    translate([0, 0, 0])
      linear_extrude(height=w)
        polygon(points=[[0,0],[0, h],[h, h]]);
  }
}

module _msbBox(bx, by, bz, bt) {
    difference() {
        cube([bx, by, bz]);
        translate([0.01+bt, 0.01+bt, -0.01]) {
            cube([bx-bt*2, by-bt*2, bz+1]);
        }
    }
}

module _msbCamfer(len,r,rs=16)
{
	p=r+0.1;
	linear_extrude(height=len) difference()
	{
		square([p,p]);
		circle(r,$fn=(rs+1)*4);
	}
}

/**
 *
 * @param width         The Y width of the bar
 * @param botHeight     The this will add height to bottom of the spray bar (0 = none)
 * @param t             The thickness of the wall
 * @param lip           The size of the box top/bottom fitting lip
 * @param od            The outer diameter of the nozzle (Hose connection)
 * @param id            The inner diameter of the water tube
 *                      [if > (od-thick) then (od-thick) will be used]
 * @param hd            The spay bar holes diameter
 * @param hSpace        The spay bar holes spacing
 */
module msbSprayBar(
  width = 152,
  botHeight = 0,
  t = 4,
  lip = 4,
  od = 22,
  id = 12,
  hd = 2.5,
  hSpace = 7
)
{
  hConLen = 16;   // Hose Connector length
  topBarH = od/1.3333;
  botBarH = od-topBarH;

  // Validate id size
  vid = (id == 0 || id > (od-t)) ? (od-t) : id;

  translate([0, 0, botHeight+lip]) {
    difference() {
      union() {
        translate([0, 0, botBarH])cube([od, width, topBarH]);

        // Bar anchor points, for use with rubber bands
        translate([-t, 0, od-t]) {
          translate([0, 0, 0]) cube([od+t*2, t*2, t]);
          translate([0, width-t*2, 0]) cube([od+t*2, t*2, t]);
        }

        difference() {
          translate([0, 0, 0]) cube([od, width, botBarH]);
          translate([t+0.1, t, -0.1]) cube([od-t, width-t*2, botBarH]);
        }

        translate([od/2, t, od/2]) rotate([-90, 0, 0]) tube(width+hConLen, od, vid);

      }
      // Clear the inner dimeter of the tube
      translate([od/2, t, od/2]) rotate([-90, 0, 0]) cylinder(h=width, d=vid);

      // spray Holes
      st = od/2;
      cnt = floor((width-(t*2))/(hSpace+hd));
      rem = width-((cnt*(hSpace+hd))+(t*2));
      translate([od/2, rem/2, -1-0.001]) {
        for (a = [hSpace:hSpace:width-(t*2)]) {
          translate([-2, a, 0]) rotate([0, 30, 0])
            cylinder(h=st, d=hd);
        }
      }

    }
  }

  translate([0, 0, 0]) {
    if (botHeight > 0) {
      difference() {
        union() {
          translate([0, 0, lip])cube([od, width, botHeight+lip]);
        }
        translate([t, t, -0.01+lip])cube([od, width-t*2, botHeight+lip+1]);

        // Clear the inner dimeter of the tube (Copied from above cut...)
        translate([od/2, t, od/2+botHeight+lip]) rotate([-90, 0, 0]) cylinder(h=width, d=vid);
      }
    }

    difference() {
      union() {
        // Bottom inner lip to fit box
        translate([t/2, t/2, 0]) cube([od-(t/2), t/2, lip]);
        translate([t/2, t/2, 0]) cube([t/2, width-t, lip]);
        translate([t/2, width-t, 0]) cube([od-(t/2), t/2, lip]);
      }
    }

    translate([0, 0, 0]) {
      difference() {
        union() {
          // Bottom outer lip to fit box
          lip2H = lip+topBarH+botHeight+botBarH;
          translate([0, -t/2, 0]) cube([od, t/2, lip2H]);
          translate([-t/2, -t/2, 0]) cube([t/2, width+t, lip2H]);
          translate([0, width, 0]) cube([od, t/2, lip2H]);
        }
        // Clear the inner dimeter of the tube (Copied from above cut...)
        translate([od/2, t, od/2+botHeight+lip]) rotate([-90, 0, 0]) cylinder(h=width, d=vid);
      }
    }
  }

}

module tube(h=40, od=20, id=18)
{
  difference() {
    cylinder(h=h, d=od);
    translate([0, 0, od-id]) cylinder(h=h+0.02, d=id);
  }
}

/**
 * @param type          The type of mat:
 *        1 = blank - Use if you want to create your own riffles
 *        2 = ribs      [0.6, 2, 6]
 *        3 = sawtooth  [0.6, 2.4, 9]
 *        4 = vortex    [0.6, 18, 6]
 * @param length        The X length of the mat
 * @param width         The Y width of the mat
 * @param height        The Z height of the mat
 * @param rifParams     The riffle params array
 *                      [rifHeight, rifLength, rifSpacing]
 * @param headSpace     The riffle spacing at the head of the mat
 * @param sideSpace     The riffle spacing on the sides
 * @param np            The notch positions from the head of the mat
 */
module msbMat(
  type = 2,
  length = 100,
  width = 100,
  height = 0.4,
  rifParams = [
    0.6,    // rifHeight
    1,      // rifLength
    6       // rifSpace
  ],
  np = 80,
  headSpace = 5,
  sideSpace = 2
)
{

  // Mat base
  difference() {
    union() {
      cube([length, width, height]);
      // Debug mat size
      //translate([headSpace, sideSpace, 0])
      //  cube([length-headSpace, width-(sideSpace*2), height*2]);
    }
    // TODO: Add notches to the mat to lock fit into box
    nd = 3.8; // Notch diameter
    translate([np-tol*2, 0, -0.1]) {
      translate([0, 0, 0]) cylinder(d=nd, h=height+2);
      translate([0, width, 0]) cylinder(d=nd, h=height+2);
    }

  }

  // Mat Riffles
  translate([headSpace, sideSpace, height]) {
    if (type == 2) {
        translate([0, 0, 0])
          msbMatRibs(length-headSpace, width-(sideSpace*2), rifParams[0], rifParams[1], rifParams[2]);
    } else if (type == 3) {
        translate([0, 0, 0])
          msbMatSawTooth(length-headSpace, width-(sideSpace*2), rifParams[0], rifParams[1], rifParams[2]);
    } else if (type == 4) {
        translate([0, 0, 0])
          msbMatSawVortex(length-headSpace, width-(sideSpace*2), rifParams[0], rifParams[1], rifParams[2]);
    }
  }
}

/**
 *
 */
module msbMatRibs(length = 100, width = 100, height = 0.6, ribLength = 2, ribSpace = 6)
{
    echo("MAT TYPE: Ribbed");
    for(a = [0:ribSpace:length-(ribLength)]) {
      translate([a, 0, 0]) cube([ribLength, width, height]);
    }
}

/**
 *
 */
module msbMatSawTooth( length = 100, width = 100, height = 0.6, ribLength = 2, ribSpace = 6)
{
    echo("MAT TYPE: Saw Tooth");
    for(a = [0:ribSpace:length-(ribLength)]) {
      translate([a, 0, 0])
        _msbSawtooth(width, height, ribLength);
    }
}

/**
 *
 */
module msbMatSawVortex(length = 100, width = 100, height = 0.6, ribLength = 2, ribSpace = 6)
{
  echo("MAT TYPE: Vortex");

  // TODO: Still not perfectly centered when reseized, look into it later
  cnt = floor(width/(ribLength*2));
  rem = (width)-(cnt*(ribLength*2));

  echo(cnt);
  echo(rem);

  // Vortex
  translate([0, rem/2, 0]) {
    union() {
      for(x = [0:ribLength+ribSpace:length-(ribLength)])
        for(y = [0:(ribLength*2)-height:width-(ribLength*2)])
          translate([x, y, 0]) _msbVortexUnit(ribLength, height);
    }
  }
}

// ------------------
//  Private modules
// ------------------

module _msbVortexUnit(d=20, h=2)
{
  _msbVortexCurl(d, h);
  translate([0, (d*2)-h/2, 0]) mirror([0, 1, 0]) _msbVortexCurl(d, h);
}

module _msbVortexCurl(d=20, h=2)
{
  l = d/8;  // strech the curl
  translate([d/4, d/2, 0]) rotate([0, 0, 180]) _msbVortexArch(d/2, h);
  translate([(d/4)+l, 0, 0]) _msbVortexArch(d, h);
  translate([d/4, 0, 0]) cube([d/8, h/2, h]);
  translate([d/4, d-h/2, 0]) cube([d/8, h/2, h]);

}

module _msbVortexArch(d=20, h=2)
{
  translate([0, d/2, 0]) {
    difference() {
      cylinder(d=d, h=h);
      translate([0, 0, -0.01]) cylinder(d=d-h, h=h+0.02);
      translate([-d, -d/2, -0.01]) cube([d, d, h+0.02]);
    }
  }
}

module _msbSawtooth(l=50, h=5, d=2) {
  translate([0, 0, h])
    rotate([-90, 0, 0])
      linear_extrude(l)
        polygon([[d, 0], [0,h], [d, h]]);
}

```


[User]
I'd like to create a parametric nozzle holder for a specific triangular compartment in a drawer organizer. The organizer itself is from Thingiverse (thing:4612526), designed by 419mining.  I need an OpenSCAD design that will fit within that triangular space, and hold various printer nozzles.

Here are the key design requirements:

1.  **Shape:** The base should be a right triangle, matching the compartment in the organizer. The dimensions of the triangle are roughly 64mm along the x-axis and 84mm along the y-axis.
2.  **Nozzle Holes:** The holder should have cylindrical holes to hold the nozzles. These holes should be arranged in a grid pattern. The diameter of each hole should be about 6.2mm.
3.  **Hole Spacing:** I need to be able to control the spacing between the holes using a variable (say `spc`). The spacing should be measured from center to center and the default should be set to `dia+2` to provide 2mm of space between holes.
4.  **Hole Offset:** The holes shouldn't start flush against the triangle edges. I need an offset variable (e.g., `strt`) to control the starting position of the hole grid. The default should be set to 5mm from each leg of the triangle.
5.  **Hypotenuse Clearance:** The holes along the hypotenuse of the triangle shouldn't be partially cut off; they should be either fully present or completely absent. I need to dynamically calculate if a given hole intersects the hypotenuse using an `e` variable as an epsilon to control how close to the hypotenuse we can place holes. The default value for `e` should be 0.1.
6.  **Height:** The height of the nozzle holder needs to be parametric, controlled by a variable `ht`. The default should be 11mm, but I want to be able to change it if needed.
7.  **Labels:** Along the "right" edge of the triangle (i.e., along the y-axis), I'd like to put text labels indicating the nozzle size for each row of holes. I need a list of labels `dims_txt`, where each element corresponds to one row of holes (e.g., `dims_txt = ["0.4", "0.4", "0.2","0.3","0.5","0.6","0.8","1.0", "0.1",""];`).  The text should be rotated so that it is read from left to right as though it was a label on the side.
8.  **Debugging:**  It would be helpful to have a debug option `dbg_txt`.  If true, then each cylindrical hole should have a text label showing the x,y coordinate on the top face of the cylinder. The debug labels should be small enough to be visible, and in a different color (e.g. blue), so that I can see what the coordinates of the holes are.  This should default to false.
9. **Edge Dims:**  I want a variable called `edge_dims` that toggles the labels on/off.  It should default to true.
10. **Parametric:** I want this whole thing to be completely parametric, with all of the dimensions as variables at the top of the file, just like it is in the original file I provided.

So, the variables I'm expecting are:

*   `maxx` (x dimension of the triangle, default 64)
*   `maxy` (y dimension of the triangle, default 84)
*   `ht` (height of the holder, default 11)
*   `dia` (diameter of holes, default 6.2)
*   `spc` (spacing between holes, default `dia+2`)
*   `strt` (starting offset of hole grid, default 5)
*   `e` (epsilon for hypotenuse clearance, default 0.1)
*   `dims_txt` (list of row labels, default `["0.4", "0.4", "0.2","0.3","0.5","0.6","0.8","1.0", "0.1",""]`)
*   `dbg_txt` (debug text on hole cutouts, default false)
*   `edge_dims` (edge dimension text, default true)

I'll also need the `text_on` library which is available at https://github.com/brodykenrick/text_on_OpenSCAD. Could you generate the necessary `.scad` files for this, including that library (or an equivalent library if the one I mentioned isn't supported)?

[Assistant]
nozzles-in-drawer.scad:
```
// This fits inside the triangular compartment in the parts drawer for the CR-6SE and holds your nozzeles
// drawer organizer here:  https://www.thingiverse.com/thing:4612526
//
// this by:
//   Nov-15-2020
//   bdobyns@gmail.com
//   https://www.facebook.com/barry.dobyns/

use<../lib/text_on.scad>

//   I print 0.4 on the two longest (bottom) rows because they are the most common
//   I print 0.2 on the next two because after 0.4, they are more common than the others
// text along the y-axis rail. typically you need eight dims because you get eight rows.
dims_txt = ["0.4", "0.4", "0.2","0.3","0.5","0.6","0.8","1.0", "0.1",""];

// x dimension of the triangle mm
maxx = 64;
// y dimension of the triangle mm
maxy = 84;
// how high the swiss cheese is mm
ht=11;
// diameter of holes mm
dia=6.2;
// spacing between holes mm
spc=dia+2;
// where to start each row mm
strt=5;
// a small epsilon mm - controls how close it gets to the hypotenuse
e=.1;
// debugging text on the hole cutouts
dbg_txt=false;
// show the dims on the right edge
edge_dims=true;

union() {
    // I designed this facing the wrong way, so had to switch it late
    translate([2,0,ht]) rotate([0,180,0])
    // swiss cheese part
    difference() {
        // this is the basic triangle
        linear_extrude(height=ht)
          polygon(points = [[0,0],[maxx,0],[0,maxy]]);

        // make a lot of holes (maybe more than we need? by cube filling?
        for (xx = [ strt: spc: maxx ] ) {
            for ( yy = [strt: spc : maxy ] ) {
               // don't draw the hole if it intersects the hypotenuse edge.
               // This also means holes off to the far right get drawn as well.  okay.
               if (lineCircle(x1=maxx, y1=0, x2=0, y2=maxy, cx=xx, cy=yy, r=dia/2+e) == false )
                    one_cyl(xx,yy,dia);
            } // for xx
        } // for yy
    } // difference() of the wedge, and the holes

    // once we did the trigonometry to determine if the holes are on the edge,
    // it was easy to use the same trig to determine when to write the dim text
    if(edge_dims)  {
        xx=strt;
        for ( yy = [strt: spc : maxy ]) {
            if  (lineCircle(x1=maxx, y1=0, x2=0, y2=maxy, cx=xx, cy=yy, r=dia/2+e) == false) {
                  tx = dims_txt[round((yy - strt)/spc)];
                  // left_txt(tx,xx+spc/2,yy-spc/2+2*e,dia);
                  left_txt(tx,1,yy,strt);
                  }
        }
    }
} // union() of the swiss cheese and the dims-text

module one_cyl(xx=1, yy=1, dia=1) {
    translate([xx,yy,-0.5])  {
            color("red") cylinder(d=dia, h=ht+1, center=false, $fn=30);
        // we draw the coords on the cylinders so we can decide which ones to exclude above
        // in the for loop, so that we don't have a swiss-cheese edge.  this gives us
        // a surface to write their sizes upon
        if (dbg_txt)
            color("blue") text_on_cube(cube_size=[dia,dia,ht*2.1],t=str(xx,",",yy),size=0.5,face="top");
    }
}

module dim_txt(tx,xx,yy,dia) {
   translate([xx,yy,-0.5]) rotate([0,0,-55])  {
     color("green") text_on_cube(cube_size=[dia,dia,ht*2.1],t=str(tx),size=1.5,face="top");
   }
}

module left_txt(tx,xx,yy,dia) {
   translate([xx,yy,-0.5]) rotate([0,0,-90])
     color("green") text_on_cube(cube_size=[dia,dia,ht*2.1],t=str(tx),size=1.5,face="top");
}

// now we tackle the problem of calculating whether a hole intersects the
// hypotenuse of the triangular surface.  We horribly misuse code from
// http://www.jeffreythompson.org/collision-detection/line-circle.php
// rewritten by bdobyns for OpenSCAD's bizarre functional one-pass style.

// LINE/CIRCLE Intersection, returns true if the line intersects the circle
function lineCircle(x1, y1, x2, y2, cx, cy, r) =
  // is either endpoint INSIDE the circle?
  // if so, return true immediately
  pointCircle(x1,y1, cx,cy,r) ? true :
  pointCircle(x2,y2, cx,cy,r) ? true :
  // is the line tangent to the circle? return false
  ! onSegment(x1, y1, x2, y2, cx, cy, r) ?  false :
  // is the closest distance to the center less than r?
  distance(x1, y1, x2, y2, cx, cy, r) <= r ? true : false;

// get length of the line
function dist(a,b) = a-b;
  // get distance between the two points using the Pythagorean Theorem
function pythagoras(a,b) = sqrt(pow(a,2) + pow(b,2));
function llen(x1, y1, x2, y2) = pythagoras( dist(x1,x2), dist(y1,y2) );
  // get dot product of the line and circle
function dot(x1, y1, x2, y2, cx, cy, r) =  ( ((cx-x1)*(x2-x1)) + ((cy-y1)*(y2-y1)) ) / pow(llen(x1, y1, x2, y2),2);
function closestX(x1, y1, x2, y2, cx, cy, r) = x1 + (dot(x1, y1, x2, y2, cx, cy, r) * (x2-x1));
function closestY(x1, y1, x2, y2, cx, cy, r) = y1 + (dot(x1, y1, x2, y2, cx, cy, r) * (y2-y1));
  // is this point actually on the line segment?
  // if so keep going, but if not, return false
function onSegment(x1, y1, x2, y2, cx, cy, r) = linePoint(x1=x1,y1=y1,x2=x2,y2=y2, px=closestX(x1, y1, x2, y2, cx, cy, r),py=closestY(x1, y1, x2, y2, cx, cy, r));
  // get distance to closest point
function ndistX(x1, y1, x2, y2, cx, cy, r) = closestX(x1, y1, x2, y2, cx, cy, r) - cx;
function ndistY(x1, y1, x2, y2, cx, cy, r) = closestY(x1, y1, x2, y2, cx, cy, r) - cy;
function distance(x1, y1, x2, y2, cx, cy, r) = pythagoras( ndistX(x1, y1, x2, y2, cx, cy, r), ndistY(x1, y1, x2, y2, cx, cy, r) );

// POINT/CIRCLE returns true if the point is inside the circle
function pointCircle( px, py, cx, cy, r) = llen(px, py, cx, cy) <= r ? true : false ;

// LINE/POINT returns true if the point lies on the line
function linePoint(x1, y1, x2, y2, px, py) =
   (llen(px, py, x1, y1)+llen(px, py, x2, y2) >= llen(x1,y1,x2,y2)-e &&
        llen(px, py, x1, y1)+llen(px, py, x2, y2) <= llen(x1,y1,x2,y2)+e) ? true : false ;

```


[User]
Hey, I need an OpenSCAD design for a fan adapter that connects two fans of different sizes, and it needs to be parametric. I've been messing around with some code, but I'd love to get a fresh start from an AI.

Here are the parameters I want to control:

**Fan Parameters:**

*   `t_wall`: Wall thickness (in mm, I'd like to make this 4mm for now)
*   `d_fan1`: Diameter of the smaller fan (30mm)
*   `ls_fan1`: Screw hole spacing for the smaller fan (24mm)
*   `ds_fan1`: Screw hole diameter for the smaller fan (3.4mm)
*   `d_fan2`: Diameter of the larger fan (60mm)
*   `ls_fan2`: Screw hole spacing for the larger fan (52mm)
*   `ds_fan2`: Screw hole diameter for the larger fan (4.3mm)

**Cone Parameters:**

*   `l_mani1`: Length of the straight pipe section before the elbow on the smaller fan side (5mm)
*   `a_cone`: Cone angle (100 degrees)
*  `l_mani2`: Length of the cone (should be calculated from d_fan2 and a_cone, it's more of an internal variable I need, not an external parameter)

**Manifold Parameters:**
* `a_mani`: Manifold angle (the elbow angle of the pipe) - set to 45 degrees.
* `az_mani`: Manifold z-axis rotation angle.  Set to 20 degrees.

**Internal Parameters (Calculated):**
* `n_pipe`: Pipe reduction ratio relative to fan1 diameter, set to 1.
* `n_angle`: Angle factor, set to 0.501.

**Other:**

*  I need to be able to control the resolution with `$fn` - so that it's easier to export and render
* It will be necessary to use the `rotate_extrude` command.

Essentially, it should generate a base plate for the smaller fan, a straight pipe section, a curved elbow, a cone section transitioning to the larger fan, and finally a base plate for the larger fan.  All screw holes should be included in the base plates. Make sure the transition pipe is of consistent thickness between the two base plates.

I think that's everything! Let me know if you need any clarification. Thanks.

[Assistant]
variable_fan_adapter.scad:
```
// A configurable fan size adapter
// Create by : Sherif Eid
// sherif.eid@gmail.com

// v 1.0.4  : cleaned code, unified all in one file
// v 1.0.3  : added cone angle for the larger fan
// v 1.0.2  : fixed bug in sizing the fan plates
// v 1.0.1  : fixed output fan cone to tube size, increased size of fan opening
// v 1.0    : first release

// Here goes design variables, dimensions are in mm

// fans' parameters
// wall thickness
t_wall = 4;
// fan 1: diameter
d_fan1 = 30;
// fan 1: distance between screw openings
ls_fan1 = 24;
// fan 1: screw openings' diameter
ds_fan1 = 3.4;
// fan 2: diameter
d_fan2 = 60;
// fan 2: distance between screw openings
ls_fan2 = 52;
// fan 2: screw opening diameters
ds_fan2 = 4.3;

// larger fan cone parameters
// length to manifold elbow
l_mani1 = 5;
// cone angle
a_cone = 100;
// length to manifold elbow
l_mani2 = round(d_fan2/(2*tan(a_cone/2)));

// manifold parameters
// manifold angle
a_mani = 45;
// z-axis rotation angle of the manifold elbow
az_mani = 20;
// internal parameters
// pipe reduction ratio relative to fan 1 diameter
n_pipe = 1;
// angle factor
n_angle = 0.501;

// other advanced variables
// used to control the resolution of all arcs
$fn = 50;

// modules library
module fanplate(d,ls,t,ds)
{
    /*
    d   : diameter of the fan
    ls  : distance between screws
    t   : wall thickness
    ds  : diameter of screws
    */
    difference()
    {
        difference()
        {
            difference()
            {
                difference()
                {
                    //translate([d*0.1+d/-2,d*0.1+d/-2,0]) minkowski()
                    translate([-0.45*d,-0.45*d,0]) minkowski()
                        {
                         //cube([d-2*d*0.1,d-2*d*0.1,t/2]);
                         cube([d*0.9,d*0.9,t/2]);
                         cylinder(h=t/2,r=d*0.05);
                        }
                    translate([ls/2,ls/2,0]) cylinder(d=ds,h=t);
                }
                translate([ls/-2,ls/2,0]) cylinder(d=ds,h=t);
            }
            translate([ls/-2,ls/-2,0]) cylinder(d=ds,h=t);
        }
        translate([ls/2,ls/-2,0]) cylinder(d=ds,h=t);
    }
}

module mani_elbow(a,d,t)
{
    // this is the manifold elbow
    // a  : angle of the elbow
    // d  : diameter of the elbow
    // t  : wall thickness

    translate([-1*n_angle*d,0,0]) rotate([-90,0,0]) difference()
    {
        difference()
        {
            difference()
            {
                rotate_extrude() translate([n_angle*d,0,0]) circle(r = d/2);
                rotate_extrude() translate([n_angle*d,0,0]) circle(r = (d-2*t)/2);
            }
            translate([-2*d,0,-2*d]) cube([4*d,4*d,4*d]);
        }
        rotate([0,0,90-a]) translate([-4*d,-2*d,-2*d]) cube([4*d,4*d,4*d]);
    }
}

// body code goes here

difference() // fan 1 plate + pipe
{
    union()
    {
        fanplate(d=d_fan1,ds=ds_fan1,t=t_wall,ls=ls_fan1);  // fan 1 plate
        cylinder(d=n_pipe*d_fan1,h=l_mani1+t_wall);    // fan 1 pipe length
    }
    cylinder(d=n_pipe*d_fan1-2*t_wall,h=l_mani1+t_wall);
}

// elbow, cone and second fan plate
rotate([0,0,az_mani]) union() {
    translate([0,0,l_mani1+t_wall]) mani_elbow(d=n_pipe*d_fan1,a=a_mani,t=t_wall);
    translate([n_pipe*n_angle*d_fan1*(cos(a_mani)-1),0,t_wall+l_mani1+n_pipe*n_angle*d_fan1*sin(a_mani)]) rotate([0,-1*a_mani,0]) difference()
    {
        union()
        {
            cylinder(d1=n_pipe*d_fan1,d2=n_pipe*d_fan2,l_mani2);
            translate([0,0,l_mani2]) fanplate(d=d_fan2,ds=ds_fan2,t=t_wall,ls=ls_fan2);  // fan 2 plate
        }
        cylinder(d1=n_pipe*d_fan1-2*t_wall,d2=n_pipe*d_fan2-2*t_wall,l_mani2+t_wall);
    }
}

```


[User]
Hi there! I'm looking to design a watch loop, you know, the little piece that holds the excess strap down after you buckle it. I have a basic idea using `minkowski()` that I've roughly sketched out, but I need it to be parametric so it can fit different watch straps and thicknesses. I'd also like to be able to easily adjust the dimensions for printing.

My base idea uses a `minkowski()` of a cube and a cylinder, but I'm looking for the following:

1.  **Parametric Design:** I need parameters for:
    *   `strap_width`: The width of the watch strap that will pass through the loop.
    *   `strap_thickness`: The thickness of the watch strap.
    *   `loop_thickness`: The overall thickness of the loop itself (not the wall thickness, but the total dimension in the z-axis).
    *   `wall_thickness`: The desired wall thickness for 3D printing, ideally something like 3 walls, so maybe 1-1.5mm.
    *   `corner_radius`: How rounded the corners of the loop should be.

2.  **Shape:** The general shape should be similar to my example using `minkowski()`, but instead of a rectangular prism, the inside should be a rectangle with rounded edges, just enough to smoothly accept the strap. The overall shape can be a bit more organic, maybe following the curve of a larger cylinder, but should be generally rectangular in shape.
3.  **Printing:** I'll be printing this in TPU, so I would like an easy way to control the wall thickness for strength. I'll be printing this with 0 infill, 0 top layers, and 0 bottom layers, so it will rely on the wall thickness for strength.

I'm not too familiar with OpenSCAD libraries, but if you think there are any that would help with this, please use them. Ideally, this would be a single `.scad` file, but if you need to use a helper file, that's fine. Let me know if you have questions. Thanks!

[Assistant]
watch_loop.scad:
```
minkowski()
{
  $fn=50;
  cube([18,7,9]);
  cylinder(r=2,h=1);
}
```