[User]
Hey, I'm looking to get a customizable storage box designed for my vape atomizers. I've got a few different sizes, and I need something that can protect them from dust and be easy to carry around. I'd like to have a base container and a lid that fits snugly. The lid should also have a hole in the top to allow for some airflow, even when closed. I want the design to be parametric so I can easily adjust the dimensions to fit different atomizers.

Specifically, here are the parameters I'm thinking about:

*   **`diameter`**: The inner diameter of the container, which should be slightly larger than the atomizer's diameter.
*   **`bottom`**: The thickness of the bottom of the container.
*   **`wall`**: The thickness of the container's walls.
*   **`height`**: The overall height of the container.
*  **`lidHeight`**: The height of the lid.
*  **`clearance`**: The space between the container and the lid.

I'd like to be able to see the container and lid together, or each separately when I'm previewing the model. So maybe an option to toggle between showing "all", "container only", and "lid only".

The lid should have a small hole in the center, maybe about 8mm wide with a 3.75mm diameter hole through it to allow for airflow.

Can you generate OpenSCAD code for this? I don't need to be able to adjust the hole in the lid beyond its diameter, but I would like to be able to adjust all the other parameters I have specified. Also, make sure to use a `$fn` of 360 to make everything perfectly circular. I don't need to import any extra libraries or anything.

[Assistant]
atomizer_box.scad:
```
// preview[view:south west, tilt:top diagonal]

/* [Container] */
// Inner diameter
diameter = 23;
// Bottom and top thickness
bottom = 0.6;
// Wall thickess
wall = 0.6;
// Container Height
height = 70;
// Height of the lid
lidHeight = 6;
// Clearance between container and lid
clearance = 0.1;

/* [View] */
// Which parts would you like to see?
part = "all"; // [all:Container and Lid, container:Container Only, lid:Lid Only]

/* [HIDDEN] */
radius = diameter / 2;
total = height + bottom;

printPart();

module printPart() {
  if(part == "container") container();
  else if(part == "lid") lid();
  else {
    container();
    translate([diameter + clearance * 2 + 5, 0, 0])
      lid();
  }
}

module container() {
    difference() {
        cylinder(r=(radius + wall), h=total, $fn=360);

        translate([0, 0, bottom])
            cylinder(r=radius, h=total, $fn=360);
    }
}

module lid() {
    difference() {
        cylinder(r=(radius + wall * 2 + clearance), h=lidHeight, $fn=360);

        translate([0, 0, bottom])
            cylinder(r=(radius + wall + clearance), h=lidHeight, $fn=360);
    }

    difference() {
        cylinder(r=(8), h=lidHeight, $fn=360);
        translate([0, 0, bottom])
            cylinder(r=(3.75), h=lidHeight, $fn=360);
    }
}
```


[User]
Hey, I'm trying to design a clip for my Apple Pencil, and I'm having a bit of trouble figuring out the best way to do it in OpenSCAD. I've got some measurements and design ideas, and was hoping you could help me generate the code.

Basically, I want a clip that slides onto the Apple Pencil, with a barrel that fits around it and a clip extending off the side. I need to be able to adjust all sorts of parameters.

Here's what I'm thinking:

*   **Pencil Diameter:** I need a variable to adjust the internal diameter to fit the Apple Pencil (8.9mm is my starting point, but want to scale it a bit to account for print tolerances). I'll call this `Pencil_Dia`.
*   **Barrel Diameter:** This will be the outer diameter of the barrel portion that fits around the pencil, so I want to adjust how beefy it is; I'll call this `Barrel_Dia`. 15mm is a good starting point.
*   **Barrel Length:** How long is the barrel itself, independent of the clip; let's call it `Barrel_Length`. I was thinking 20mm is good.
*   **Barrel Sides:** I want to be able to adjust the number of sides of the barrel, from square (4 sides) up to a circle (100 or so). Let's name this one `Barrel_Sides`.
*   **Clip Thickness:** This controls the "gap" between the clip and the barrel where it bends away from the barrel. We'll use `Clip_Thickness` for this, and 5mm sounds good.
*   **Clip Length:** The overall length of the clip part extending from the barrel. I'll call this `Clip_Length` and start with 40mm.
*  **Clip Shape:**  I want a variable to be able to change the clip from triangular to a full circle, with values starting from 3 (triangle) to 100 (a circle). Let's use the variable name `Clip_Shape`
*  **Slot Width:** A small expansion slot down the side of the barrel that allows the barrel to be flexible enough to slide over the pencil. I'd like to call this variable `Slot_Width`. 2mm is a good start here.

I was thinking the design would use a `difference` to cut out the pencil hole and slot from the barrel, with a `union` to combine the cylindrical barrel and some sort of clip feature. I was playing with a cube for the clip, but I'm open to suggestions.

I don't need any external libraries, this seems straightforward enough. I was hoping you could generate the `scad` file.

Thanks a bunch!

[Assistant]
Apple_Pencil_v2.scad:
```
// Customizer Foot Designer
// Copyright (c) 2016 www.DIY3DTech.com
//

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

/*---------------------Parameters---------------------*/

// Diameter of Apple Pencil(mm) Adjust for Plastic
Pencil_Dia = 8.9; //[7.9:0.1:9.9]

// Diameter of Barrel(mm)
Barrel_Dia = 15; //[12:1:20]

// Length of Barrel(mm)
Barrel_Length = 20; //[10:1:40]

// Number of Barrel sides (4-square to 100-round)
Barrel_Sides = 100; //[4:1:100]

// Clip thickness (mm)
Clip_Thickness = 5; //[3:1:8]

// Clip length (mm)
Clip_Length = 40; //[20:1:80]

// 3=Triangle 100=Round
Clip_Shape = 60; //[3:1:100]

// Slot width(mm)
Slot_Width = 2; //[1:1:10]

/*---------------------Execute---------------------*/

 Clip();

/*---------------------Modules---------------------*/
module Clip(){
  difference() {
        Body();
    // Create pencil opening
      translate([0,0,-1]){cylinder((Clip_Length+Barrel_Dia+5),(Pencil_Dia/2),(Pencil_Dia/2),$fn=60,false);
        }
    // Create Clip w/Cube
        color("red");
        translate([0,Clip_Thickness,((Clip_Length+Barrel_Length)/2)+Barrel_Length-2]){rotate ([0,0,-270])cube([Barrel_Dia+Clip_Thickness,Barrel_Dia,Clip_Length+Barrel_Length], true);
        }
    // Create Slot w/Cube
        translate([-Slot_Width/2,0,-1]){cube([Slot_Width,Barrel_Dia,Barrel_Length]);
        }
    }
}

module Body(){
    union() {
    // Create base barrel for clip
        cylinder(Barrel_Length+Clip_Length,(Barrel_Dia/2),(Barrel_Dia/2),$fn=Barrel_Sides,false);
    // Create Triangular Support
        translate([0,(-Barrel_Dia/2)+0.5,0]) rotate ([0,0,90]){cylinder(Barrel_Length+Clip_Length+(Barrel_Dia/2),Barrel_Dia/2,Barrel_Dia/2,$fn=Clip_Shape,fase);
        }
   }
   }

```


[User]
Okay, I'm looking to design a nut holder for a 3D printer bed, specifically for the OneUp v2, but I want it to be parametric so I can easily adjust it later for other printers or hardware. I want the design to include the spring cutout that's needed for the OneUp bed, and I'd like to include some built-in support structures.

The basic idea is to have a block that holds an M3 nut, and has a hole for an M3 bolt, as well as a cutout for the bed spring. The existing design I'm using now was based on a TwoUp model, so I had to make changes. The key dimensions of the part are as follows, keeping in mind these should all be variables:

*   **Overall Dimensions:** The part is a rectangular block. Let's use variables `x_length`, `y_constant`, and `z_height` for these dimensions.
    *   `y_constant` should remain constant, but should also be a variable.
    *   `x_length` needs to be derived from other variables; see below.
    *   `z_height` also needs to be derived from other variables; see below.
*   **Cutouts:**
    *   There are two cutouts on the side opposite of the nut. The first one, which I'll call cutout 1, goes partway through the block. The second, cutout 2, should have a shorter length and sit on top of the first cutout, reducing the depth of the base at this point.
    *   Cutout 1 has variable length `x_cutout_1`, which can be derived from `x_long_inset` and should be the length of the part minus `x_riser`. It also goes partway up the part, ending at `z_base + z_riser`.
    *   Cutout 2 has a length `x_cutout_2` derived from subtracting an overhang (`x_overhang`) from `x_cutout_1` and a height `z_top` on top of cutout 1.
*   **Bolt and Nut Holes:**
    *   There should be a centered circular hole for an M3 bolt running the full height of the block. The diameter should be based on `M3_bolt_diameter` with an added adjustment, `M3_adjustment`.
    *   There needs to be a hexagonal cutout for the M3 nut that's centered on the bolt hole, but only goes partway down. The diameter should be based on `M3_nut_diameter` plus the `M3_adjustment`, and the height should be `M3_nut_height`. The z-axis offset for this cutout should be `z_base - nut_height`.
*  **Spring Cutout:**
    *  There should be a cylindrical cutout for the bed spring, located at the same x and y coordinates of the bolt hole, but at the very top of the block and goes down by `z_top`.  This cutout should be `spring_diameter` wide.
*   **Support Structures:** These are a bit more complex.
    *   The support structure should be located on the side of the part with the cutouts, at the base of cutout 2, and should span the entire `y_constant` width of the block. This should be on top of cutout 1.
    *   The support needs to have 3 small supports, with a triangular side profile, that are themselves joined by a support that runs along the whole y length of the support. Each of the supports would have a height of `z_riser`.
    *   The central support beam should be on top of, and follow the path of, the sides of the support structures. It's like an upside down U connecting the triangular pieces. This beam would have a series of 3 cutouts running through it, so that the beam is not solid.
*   **Variables:**
    *   I'd like to use the following variables, which should all be adjustable: `x_origin`, `y_origin`, `z_origin`, `x_long_inset`, `x_riser`, `x_overhang`, `z_base`, `z_riser`, `z_top`, `y_constant`, `x_hole_offset`, `M3_adjustment`, `M4_adjustment`, `M3_bolt_diameter`, `M4_bolt_diameter`, `M3_nut_diameter`, `M4_nut_diameter`, `M3_nut_height`, `M4_nut_height`, and `spring_diameter`.

The final file should allow me to easily switch between an M3 and M4 nut, so include parameters to switch to M4.

I'd also like to ensure that the bolt holes have enough segments to look circular, so maybe a $fn parameter for that. 30 would be sufficient, I think.

I do not require that any libraries be used, so please do not use any libraries when generating the OpenSCAD files.

[Assistant]
modified_thingiverse_998192_Nut_Holder.scad:
```
/*
  OneUp bed platform nut holder(s)

  M3 nut used with heated bed on TwoUp (v2) and OneUp v2
  M4 nut used with basic bed (v2)

  Changes:
    Thicker vertical wall
    Removed lip on upper horizontal surface
    Resized hexagonal and circular holes to conform to M3 bolt and screw sizes

*/

x_origin = 0;
y_origin = 0;
z_origin = 0;
x_long_inset = 9.4;
x_riser = 3.5;
x_length = x_long_inset + x_riser;
x_overhang = 3;
z_base = 5;
z_riser = 7;
z_top = 2.5;
z_height = z_base + z_riser + z_top;

y_constant = 11;                            // Piece is always 10mm wide
x_hole_offset = 5.5;                        // Hole is always 5.0mm from innermost edge
y_hole_offset = y_constant / 2;             // Center the hole

spring_diameter = 8.0;    // spring is 8mm

// Hardware specs (with extra allowance for
M3_adjustment = 0.75;
M4_adjustment = 0.75;
M3_bolt_diameter = 3;
M4_bolt_diameter = 4;
M3_nut_diameter = 6.5;
M4_nut_diameter = 10;
M3_nut_height = 2.5;
M4_nut_height = 3.0;

// Point to either M3 or M4 specs
bolt_diameter = M3_bolt_diameter + M3_adjustment;
nut_diameter = M3_nut_diameter + M3_adjustment;
nut_height = M3_nut_height;                                 // Did not add adjustment because z-axis pretty accurate
nut_offset = z_base - nut_height;

// To make the actual code easier to read
x_cutout_1 = x_long_inset;
x_cutout_2 = x_long_inset - x_overhang;
z_origin_cutout_1 = z_origin + z_base;
z_origin_cutout_2 = z_origin + z_base + z_riser;
x_origin_hole = x_origin + x_hole_offset;
y_origin_hole = y_origin + y_hole_offset;
z_origin_hex_nut = z_origin + nut_offset;

rotate([0, 0, 0]) { difference () {
    // Create basic shape
    translate([x_origin, y_origin, z_origin])          cube([x_length, y_constant, z_height]);
    // Remove cutout 1
    translate([x_origin, y_origin, z_origin_cutout_1]) cube([x_long_inset , y_constant, z_riser]);

    // Remove cutout 2
    translate([x_origin, y_origin, z_origin_cutout_2])  cube([x_cutout_2, y_constant, z_top]);

    // Create hole for M3 bolt cylinder
    translate([x_origin_hole, y_origin_hole, z_origin]) cylinder(d=bolt_diameter, h=z_height, $fn=30);

    // Create hole for M3 hex nut holder
    translate([x_origin_hole, y_origin_hole, z_origin_hex_nut]) cylinder(d=nut_diameter, h=nut_height, $fn=6);

	// Cutout for spring on OneUp
	translate([x_origin_hole, y_origin_hole, z_height - z_top]) cylinder(d=spring_diameter, h=z_top, $fn=30);
}

// add support structure
translate([x_origin + x_cutout_2, y_origin, z_origin_cutout_1]) union() {
	color("red") difference() {
		linear_extrude(height=z_riser, center=false) union() {
			// side indented
			polygon(points=[
				[0,2], [0.5,2], [3,1.3],
				[3,0.7], [0.5,0], [0,0]
			]);
			translate([0, y_constant-2, 0]) polygon(points=[
				[0,2], [0.5,2], [3,1.3],
				[3,0.7], [0.5,0], [0,0]
			]);
		}
		translate([0, 1.6, 0]) cube([3 , y_constant-3.2, z_riser]);
		translate([1 , y_constant+1, 0]) rotate([90,0,0])
			linear_extrude(height=y_constant+2, center=false) union() {
				// bottom cutout
				polygon(points=[
					[0,1], [0.5,(z_riser/3)-0.2],
					[1.5,(z_riser/3)-0.2], [2,0.5]
				]);
				// middle cutout
				polygon(points=[
					[0,(z_riser/3)+0.2], [0.5,(z_riser*2/3)-0.2],
					[1.5,(z_riser*2/3)-0.2], [2,(z_riser/3)+0.2]
				]);
				// top cutout
				polygon(points=[
					[0,(z_riser*2/3)+0.2], [0.5,z_riser-0.5],
					[1.5,z_riser-0.5], [2,(z_riser*2/3)+0.2]
				]);
		};
	};
};

}

```


[User]
I'd like to create a 3D model of a caterpillar in OpenSCAD, and I'm looking for some help with the code. I've got a picture of a clay model, and I've also started a SCAD file with some basic shapes, but I'm hoping you can take it further and make it parametric. The core idea is that everything should scale based on a single `radius` variable, which would represent the radius of the caterpillar's wheels, but it affects the entire size of the design.

The caterpillar is in two parts; there's a large, tracked caterpillar and a smaller, simpler one.

The larger caterpillar has a spherical body, two tank-like tracks, two eyes, eyebrows, and a single arm with a glove. The body should have a segmented look, kind of like a stylized caterpillar, and should be yellow with some aqua accents. The tracks should be black with white wheels that should look like circles extruded out, not spheres. The eyes and eyebrows are black. The arm should also be yellow. The glove is white with black detailing. I think for the glove, it would be best to use overlapping spheres and extrudes to get a soft shape.

The smaller caterpillar should be very simple: a string of lime-green spheres, with white eyes with a black pupil.

I've included a file with my current progress, `caterpillar.scad`. I've tried to organize things into modules to make it easier to manage, and I think the `arc` and `sector` modules could be useful for other parts of the design later, so I'd like to keep them. I haven't used any external libraries, by the way, just standard OpenSCAD. Could you generate a more complete version of this, focusing on making it parametric based on the `radius`?

[Assistant]
caterpillar.scad:
```
radius = 5;

// Given a `radius` and `angle`, draw an arc from zero degree to `angle` degree. The `angle` ranges from 0 to 90.
// Parameters:
//     radius - the arc radius
//     angle - the arc angle
//     width - the arc width
module a_quarter_arc(radius, angle, width = 1) {
    outer = radius + width;
    intersection() {
        difference() {
            offset(r = width) circle(radius, $fn=48);
            circle(radius, $fn=96);
        }
        polygon([[0, 0], [outer, 0], [outer, outer * sin(angle)], [outer * cos(angle), outer * sin(angle)]]);
    }
}

// Given a `radius` and `angles`, draw an arc from `angles[0]` degree to `angles[1]` degree.
// Parameters:
//     radius - the arc radius
//     angles - the arc angles
//     width - the arc width
module arc(radius, angles, width = 1) {
    angle_from = angles[0];
    angle_to = angles[1];
    angle_difference = angle_to - angle_from;
    outer = radius + width;
    rotate(angle_from)
        if(angle_difference <= 90) {
            a_quarter_arc(radius, angle_difference, width);
        } else if(angle_difference > 90 && angle_difference <= 180) {
            arc(radius, [0, 90], width);
            rotate(90) a_quarter_arc(radius, angle_difference - 90, width);
        } else if(angle_difference > 180 && angle_difference <= 270) {
            arc(radius, [0, 180], width);
            rotate(180) a_quarter_arc(radius, angle_difference - 180, width);
        } else if(angle_difference > 270 && angle_difference <= 360) {
            arc(radius, [0, 270], width);
            rotate(270) a_quarter_arc(radius, angle_difference - 270, width);
       }
}

// Given a `radius` and `angle`, draw a sector from zero degree to `angle` degree. The `angle` ranges from 0 to 90.
// Parameters:
//     radius - the sector radius
//     angle - the sector angle
module a_quarter_sector(radius, angle) {
    intersection() {
        circle(radius, $fn=96);

        polygon([[0, 0], [radius, 0], [radius, radius * sin(angle)], [radius * cos(angle), radius * sin(angle)]]);
    }
}

// Given a `radius` and `angle`, draw a sector from `angles[0]` degree to `angles[1]` degree.
// Parameters:
//     radius - the sector radius
//     angles - the sector angles
module sector(radius, angles) {
    angle_from = angles[0];
    angle_to = angles[1];
    angle_difference = angle_to - angle_from;

    rotate(angle_from)
        if(angle_difference <= 90) {
            a_quarter_sector(radius, angle_difference);
        } else if(angle_difference > 90 && angle_difference <= 180) {
            sector(radius, [0, 90]);
            rotate(90) a_quarter_sector(radius, angle_difference - 90);
        } else if(angle_difference > 180 && angle_difference <= 270) {
            sector(radius, [0, 180]);
            rotate(180) a_quarter_sector(radius, angle_difference - 180);
        } else if(angle_difference > 270 && angle_difference <= 360) {
            sector(radius, [0, 270]);
            rotate(270) a_quarter_sector(radius, angle_difference - 270);
       }
}

module wheel(radius) {
    $fn = 96;
    rotate_extrude() translate([radius, 0, 0]) circle(radius / 2);
}

module wheels(radius) {
	wheel(radius);
	translate([radius * 4, 0, 0]) wheel(radius);
	translate([radius * 8, 0, 0]) wheel(radius);
}

module track(radius) {
    $fn = 96;
    translate([-radius * 4, 0, -radius])
	scale([1, 1, 1.5])  union() {
		color("black") difference() {
			linear_extrude(radius * 1.5) offset(r = radius / 5) hull() {
				circle(1.5 * radius);
				translate([radius * 8, 0, 0]) circle(1.5 * radius);
			}

			translate([0, 0, -radius / 4]) linear_extrude(radius * 2) hull() {
				circle(1.25 * radius);
				translate([radius * 8, 0, 0]) circle(1.25 * radius);
			}
		}
		color("white") translate([0, 0, radius * 0.75]) scale([1, 1, 1.5]) wheels(radius);
	}
}

module eye(radius) {
    $fn = 96;
	translate([-radius / 15, 0, 0])
	    rotate([0, 0, 90])
		    arc(radius / 2, [0, 180], radius / 5);

    translate([0, radius / 3, 0]) circle(radius / 3);
}

module eyebrow(radius) {
	rotate([0, 0, 90])
		arc(radius / 1.25, [25, 155], radius / 10);
}

module body(radius) {
    $fn = 96;
    scale([1, 1, 0.9]) union() {
		color("yellow") sphere(radius * 4);
		color("Aqua") rotate([85, 0, 90]) intersection() {
			linear_extrude(radius * 4.5) sector(radius * 3.5, [0, 180]);
			difference() {
				sphere(radius * 4 + radius / 5);
				sphere(radius * 4);
			}
		}

		// eyes
		color("black") union() {
			rotate([0, 65, 16])
				linear_extrude(radius * 4.25)
					eye(radius);

			rotate([0, 65, -16])
				linear_extrude(radius * 4.25)
					eye(radius);
		}

		// eyebrows
		color("black") union() {
			rotate([0, 55, 20])
				linear_extrude(radius * 4.25)
  				    eyebrow(radius);

			rotate([0, 55, -20])
				linear_extrude(radius * 4.25)
				    eyebrow(radius);
		}

	}
}

module arm(radius) {
    $fn = 96;
    translate([0, 0, -radius]) union() {
		translate([0, 0, radius / 2]) linear_extrude(radius)
		union() {
			translate([0, -radius * 0.75, 0]) square([radius * 9, radius * 1.5]);
			rotate(80) translate([0, -radius * 0.5, 0]) square([radius * 9, radius]);
		}

		translate([0, 0, radius * 0.25])
		    linear_extrude(radius * 1.5) circle(radius);
		linear_extrude(radius * 2)
		    translate([radius * 9, 0, 0]) circle(radius);

	}
}

module glove(radius) {
    $fn = 96;
    scale([0.8, 0.8, 1.2]) union() {
		color("white") union() {
			hull() {
				scale([1.1, 1, 0.5]) sphere(radius * 2.5);
				translate([-radius * 1.75, 0, radius / 1.5]) scale([1, 1.75, 0.8]) sphere(radius);
			}

			translate([-radius * 2.5, 0, radius / 1.5]) scale([1.2, 2, 1]) sphere(radius);

			rotate(-10) translate([0, -radius * 2.5, 0])  scale([1.75, 1, 0.8]) sphere(radius / 1.5);

		}
		color("black") intersection() {
			scale([1.1, 1, 0.55]) sphere(radius * 2.5);
			union() {
				translate([0, radius * 0.75, -radius * 2])
					linear_extrude(radius)
						square([radius * 2, radius / 4], center = true);
				translate([0, -radius * 0.75, -radius * 2])
					linear_extrude(radius)
						square([radius * 2, radius / 4], center = true);
			}
		}
	}
}

module big_caterpillar(radius) {
	translate([0, -radius * 4, 0]) rotate([90, 0, 0]) track(radius);
	translate([0, 0, radius * 3]) body(radius);
	translate([0, radius * 4, 0]) rotate([90, 0, 0]) track(radius);

	color("yellow") translate([radius * 6, -radius * 4.5, radius * 9.5]) rotate([90, 135, 0]) arm(radius);

	translate([radius * 10.75, -radius * 4.5, radius / 2.325]) rotate([0, 70, 180]) glove(radius);
}

module small_caterpillar(radius) {
    $fn = 96;
	color("LimeGreen") union() {
		translate([0, 0, -radius / 3]) sphere(radius);
		translate([radius * 1.5, 0, 0]) sphere(radius);
		translate([radius * 3, 0, radius]) sphere(radius);
		translate([radius * 4.25, 0, radius * 2]) sphere(radius);
	}

	color("white") translate([radius * 4.75, 0, radius * 3]) union() {
		translate([0, radius / 2, 0]) sphere(radius / 1.5);
		translate([0, -radius / 2, 0]) sphere(radius / 1.5);
	}

	color("black") translate([radius * 5.25, radius / 4, radius * 3]) union() {
		translate([0, radius / 2, 0]) sphere(radius / 3);
		translate([0, -radius / 2, 0]) sphere(radius / 3);
	}

	color("white") translate([radius * 5.4, radius / 2.75, radius * 3]) union() {
		translate([0, radius / 2, 0]) sphere(radius / 6);
		translate([0, -radius / 2, 0]) sphere(radius / 6);
	}
}

module caterpillars(radius) {
	big_caterpillar(radius);
	translate([radius * 3.5, -radius * 4.5, radius * 9.75])
		rotate([0, -15, 0])
			scale([0.8, 0.8, 0.8]) small_caterpillar(radius);
}

caterpillars(radius);

```


[User]
Hi, I'm looking for an OpenSCAD design for an Apple Pencil stand. I'd like it to be parametric, so I can adjust the size easily. I have a basic idea of the shape I want, but I'm not sure how to put it all together.

Basically, I want a cylindrical base with a vase-like shape on top where the pencil sits. The base should have a flat bottom, and the vase should be a truncated cone shape, so it's narrower at the bottom and wider at the top. I'd like to have a small, rounded transition where the vase meets the base. I also want a way to 'subtract' a cylindrical volume to hold the pencil, and I'd like it to go quite deep within the vase.

Here are the parameters I was thinking of, with ranges so I can adjust the model to different materials, etc:

*   **Base Diameter (Base\_Dia):**  Should be adjustable from 30mm to 40mm, with steps of 1mm. The default should be 25.
*   **Base Height (Base\_Height):**  Adjustable from 3mm to 10mm, steps of 1mm, default of 3.
*   **Vase Base Diameter (Vase\_Base):**  Adjustable from 15mm to 20mm, steps of 1mm, default 10.
*   **Vase Top Diameter (Vase\_Top):** Adjustable from 15mm to 30mm, steps of 1mm, default 20.
*  **Vase Height (Vase\_Height):** Adjustable from 15mm to 40mm, steps of 1mm, default 25.
*  **Pencil Scale (Pencil\_Scale):** Adjustable from 8.7mm to 9.9mm, steps of 0.1mm, default 8.9.  This will scale the pencil diameter so I can account for material thickness.

I think those parameters will give me enough control over the dimensions. Could you generate an OpenSCAD file or files to handle this design? I don't need any complex libraries, just the standard OpenSCAD language should be fine for this one. I think it should be possible to just have all the code in one file. Thank you!

[Assistant]
Pencil_Stand.scad:
```
// Open SCAD Name.: Apple Pencil Stand
// Copyright (c)..: 2016 www.DIY3DTech.com
//
// Creation Date..: 04/11/2016
// Discription....: Stand for Apple Pencil
//
// Rev 1:
// Rev 2:
//

/*------------------Customizer View-------------------*/
// preview[view:north, tilt:top]

/*---------------------Parameters---------------------*/

// Diameter of stand base (mm)
Base_Dia = 50; //[40:1:100]

// Height of base bottom (mm)
Base_Height = 4; //[3:1:10]

// Bottom Diameter of Vase (mm)
Vase_Base = 15; //[15:1:30]

// Top Diamter of Vase (mm)
Vase_Top = 30; //[30:1:60]

// Vase Hieght (mm)
Vase_Height = 40; //[25:1:60]

//Scale Pencil Size for Material (mm)
Pencil_Scale = 9.1; //[8.7:0.1:9.9]

/*-----------------------Execute----------------------*/

difference() {

    Base();
    translate([0,0,3]) {
        Pencil();
    } //End translate

} //End Differance

/*-----------------------Modules----------------------*/

// Form Pencil
module Pencil() {
    union() {
        translate([0,0,8]){cylinder (Vase_Height+15,Pencil_Scale/2   ,Pencil_Scale/2,$fn=60,false);}
        cylinder (9.4,0,Pencil_Scale/2,$fn=60,false);
        } //End module Pencil
    } //End Union

// Form Base
module Base(){
    union() {
    //Base of stand
    cylinder (Base_Height,Base_Dia/2,Base_Dia/2,$fn=60,false);
    cylinder (Vase_Height,Vase_Base/2,Vase_Top/2,$fn=60,false);

    //Create torus for base
    rotate_extrude(convexity = 10, $fn = 100)
    translate([Base_Dia/2, Base_Height/2, 0])
    circle(r = (Base_Height/2), $fn = 100);

     //Create torus for top
    rotate_extrude(convexity = 10, $fn = 100)
    translate([(Vase_Top/2)-1, Vase_Height, 0])
    circle(r = (Base_Height/2)-1, $fn = 100);

    } //End Union
} //End module Base

/*----------------------End Code----------------------*/
```


[User]
Okay, I'm looking to design a customizable ring with text wrapping around it, sort of like a personalized band. I've fiddled around with some code to get a basic idea, but I'd love for you to generate something a bit more robust and parametric.

Here's what I'm thinking for the design:

*   **Ring Basics:**
    *   I need to be able to define the ring's height (thickness).
    *   The outer diameter of the ring should be adjustable.
    *   The inner diameter should also be adjustable, allowing for different finger sizes.
*   **Text:**
    *   I want to be able to specify the text that appears on the ring.
    *   The text should wrap around the ring's circumference.
    *   I'd like a way to control the spacing between letters. Ideally, I can control how much space is "left" at the back of the ring where the text doesn't wrap to.
    *   The text size needs to be adjustable, probably relative to the ring height or diameter, but I don't need to specify the scaling metric specifically, but make it reasonable.
    *   I also need to adjust the vertical position of the text if I want it higher or lower on the ring surface.
    *   And finally, it's essential to be able to adjust the depth/thickness of the text. I want this adjustable in millimeters, not relative to the ring's size.
*   **Construction:**
    *   The ring itself should be a simple, solid cylinder with the appropriate inner and outer diameters cut out.
    *   The text should be added onto the surface. Ideally this would be an extrude of the text, where the extrude goes outwards from the ring's surface.
*   **Flexibility:**
    *   I should be able to adjust each of those parameters independently and see the results update.
    *   It'd also be nice if the text generation avoided the issue of trying to generate a letter on the ring at an unachievable x/y coordinate, so that letters are only extruded where they make sense to.

I'm not using any libraries right now, but if you feel like any would be useful to use, such as BOSL or something, feel free to use them. Please generate the necessary OpenSCAD file(s) to make this possible.

[Assistant]
Ring.scad:
```
$fn = 70;

//All measurements are in mm (as long as they are actually a measurement, not
// a relative value. This will be stated if it's not in mm

//Height of the ring
ringHeight = 5;

//Diameter of the ring on the outside
outerDiameter = 20;

//Diameter of the ring on the inside
innerDiameter = 17;

//Text on the ring (if you want any)
ringText = "One ring to rule them all";

//If you want the text to wrap around the entire ring, leave this at 0
//This value is not a metric or imperial measure, just the amount of space
// 'left' at the back of the ring.
//The higher this value is, the closer the letters will be together
letterWrapOffset = 3;

//This is not a regular way of adjusting text size, but it will have to do
//Basically it sets the size relative to the ring. Experiment around with
// different values. I've found 2.5 is a good default value. Remember, this
// is not metric or imperial, just a relative value
textSize = 2.5;

//The vertical position of the letters incase you want an offset. Positive
// and negative values both work
verticalLetterPos = 0;

//This is the depth of the letter in mm
letterDepth = 5;

offsetLetters = 360 / (len(ringText) + letterWrapOffset);

union() {
    for (i = [0:len(ringText)]) {
        translate([-sin(i * offsetLetters) * (outerDiameter / 2.15), cos(i * offsetLetters) * (outerDiameter / 2.15), (-(textSize * ringHeight / 4) / 2) + verticalLetterPos]) {
            rotate([90, 0, i * offsetLetters + 180]) {
                linear_extrude(height = letterDepth / 5) {
                    text(ringText[i], size = textSize * ringHeight / 4, halign = "center");
                }
            }
        }
    }

    difference() {
        sphere(d = outerDiameter);
        union() {
            translate([0, 0, ringHeight / 2]) {
                cylinder(d = outerDiameter + 1, h = outerDiameter);
            }
            translate([0, 0, -(ringHeight / 2) - outerDiameter]) {
                cylinder(d = outerDiameter + 1, h = outerDiameter);
            }
            translate([0, 0, -(ringHeight + 1) / 2]) {
                cylinder(d = innerDiameter, h = ringHeight + 1);
            }
        }
    }
}

```


[User]
Okay, so I'm looking to create a calibration tool for my dual-extruder 3D printer, specifically to dial in the XY offset between the two nozzles. I've seen some designs out there, but I'd like to create something parametric and a bit more flexible than what's readily available.

Here's the basic idea: I need a design that prints a base layer with one nozzle and then a second layer with the other nozzle, and the second layer will have varying offsets relative to the base. The user can then visually inspect the overlap to determine the best offset and update the printer settings.

Specifically, I'm thinking of a design with four spines radiating out from a central point, kind of like the arms of a plus sign. Each spine should have several “ticks” or “overlays” that are at incrementally increasing offsets. The base layer will print a solid base for the "ticks" to overlay on top.

I'd like to be able to specify the following parameters:

*   **`jitter`**: This is the offset increment between ticks on the second layer. I'd like to be able to adjust this to create different calibration ranges. For example, values of 0.2, 0.1, and 0.05 would give different levels of precision.
*   **`layerHeight`**: This parameter will allow me to adjust the print layer height for the design.
*   **`extruder`**: This parameter will determine which parts of the design get printed. A value of 0 means that it prints both the base and the top layer. A value of 1 means it only prints the base, and a value of 2 means it only prints the top layer.
*   **`middle`**: This is the distance from the center of the object to the first "tick". I'd like to be able to adjust this.
*   **`tickWidth`**: This is the width of the tick marks. I'd like to be able to adjust this.

The design should have:

*   A base layer consisting of four spines intersecting at the center, with a small circle in the middle, surrounded by a ring and a square with a pie slice missing. This will provide the base upon which the calibration offsets are measured.
*   A top layer that consists of four spines identical to the base, but with each "tick" incrementally offset from the base.
*   Some text indicating what the offset value is for each test. Ideally the offset text would be located near the printed spine to which it pertains.

The base layer should always be printed by one extruder, and the top layer by the other. When `extruder` is set to 0, the design will be two overlapping layers. When set to 1, it will print just the base layer, and when set to 2, it will print just the top layer. This will allow me to use the same file to print the two layers separately.

It would be super helpful if the design used the `text()` function to label the offset values, and the Lobster font would be cool if that's possible.

I'd also really like it if the ticks were visually distinctive using a "pie slice" shape.

Could you generate a parametric OpenSCAD file for me based on these requirements? I don't have any specific libraries I want you to use this time; the built-in OpenSCAD functions should be sufficient. Thanks!

[Assistant]
xy-nozzle-offset-calibration-2.1.scad:
```
// deviation to test
jitter=0.2; //[0.2, 0.1, 0.05]
// 0 for both, 1 for left, 2 for right
extruder=0; // [0, 1, 2]
//layerHeight you want to print with
layerHeight=0.3;

module pie_slice(r=3.0,a=30) {
  intersection() {
    circle(r=r);
    square(r);
    rotate(a-90) square(r);
  }
}

module tick(point,rot,pos) {
    rotate(pos)
    rotate(rot)
    difference() {
        pie_slice(r=point,a=15);
        pie_slice(r=point-tickWidth,a=15);
    }
}

module jitterSpine (c,j) {
    difference() {
        union() {
            rotate(-20+c)
            pie_slice(r=30+4*jitter,a=5);
            rotate(15+c)
            pie_slice(r=30+4*jitter,a=5);
        }
        circle(8);
    }

    for (i=[0:4]) {
        tick (i+middle+i*tickWidth*2+i*j,-15,c);
        tick (i+middle+i*tickWidth*2+i*j,0,c);
    }
    if (extruder==1 || extruder==0) {
        tick (4+middle+4*tickWidth*2+4*jitter,-15,c);
        tick (4+middle+4*tickWidth*2+4*jitter,0,c);
    }
};

$fn=160;
middle=10;
tickWidth=2;

if (extruder==1 || extruder==0) {
    linear_extrude(layerHeight) {
        difference() {
            union() {
                jitterSpine(0,0);
                jitterSpine(90,0);
                jitterSpine(180,0);
                jitterSpine(270,0);
                circle(middle-tickWidth);
                difference() {
                    difference() {
                        circle(32);
                        circle(30);
                    }
                }
                difference() {
                    square(32);
                    pie_slice(r=30,a=90);
                }
            }

        }
    }
}
translate([0,0,layerHeight])
linear_extrude(layerHeight) {
    if (extruder==2 || extruder==0) {
        jitterSpine(0,jitter);
        jitterSpine(90,jitter);
        jitterSpine(180,jitter);
        jitterSpine(270,jitter);
        translate([1,-3.5,0])
        text("+",font="Lobster", size=12, halign="right", valign="center");
        translate([6,1,0])
        text("-",font="Lobster", size=15, halign="right", valign="center");
        translate([30.5,28,0])
        text(str(jitter),font="Lobster", size=5, halign="right", valign="center");
    }
}
```


[User]
I'm looking to have a custom doorstop designed, and I'd like it to be parametric so I can adjust it for different door gaps. The basic idea is that it's shaped like a section of a cylinder, sort of like a quarter of a CD but with a wedge shape for actually stopping the door.

Here's how it should work:

*   **Base Shape:** The doorstop is based on a cylinder.  We'll cut out the center and then remove part of the top to create a wedge.
*   **Parametric Dimensions:** I need to be able to control these:
    *   `FN`:  This is just the $fn for cylinder resolution. Let's default it to 120.
    *   `ID`:  The inner diameter of the cylinder cutout. This should be around 15mm, but I'd like to adjust it.
    *   `OD`:  The outer diameter of the cylinder. 120mm is good as a default.
    *   `Hmin`: The minimum height of the doorstop where the wedge starts. Let's make 5mm the starting default.
    *   `Hmax`: The maximum height of the doorstop at its peak. 30mm should be the default.
*   **Wedge Angle:** The wedge angle should be automatically calculated based on `Hmin`, `Hmax`, and `OD`. The idea is to take `asin((Hmax-Hmin)/OD)` and then reduce that angle slightly. Let's say 95% of the calculated angle.
*   **Function:** There should be a main module that generates the doorstop called `CD_DoorStop()`.

I'd like the scad file to be clear and well commented. I don't need any external libraries. Thanks!

[Assistant]
CD_Doorstop.scad:
```
//**************************************************************************
//*
//*   Configurable CD/DVD Doorstop
//*   dimensions (all in mm)
//*   Created by Keith Welker
//*   10 April 2016
//**************************************************************************

FN = 120;//$fn for cylinders (resolution)
ID = 15; //CD inner diameter - 15 recommended
OD = 120; // CD outer diameter - 120 recommended
Hmin = 5; // minimum height of doorstop
Hmax = 30; // maximum height of doorstop

CD_DoorStop();

module CD_DoorStop()
{
    delta = .015; // small delta size for cutouts
    os = Hmin + (Hmax-Hmin)/2;
    difference()
    {
        cylinder(Hmax, d=OD, $fn = FN);
        //remove the inner hole
        translate([0,0,-delta])
        cylinder(Hmax+2*delta, d=ID, $fn = FN);
        //remove the top to form a wedge...
        translate([-OD*1.25/2, -OD/2, Hmin])
        rotate(a = asin((Hmax-Hmin)/OD)*.95, v=[1,0,0])
        cube([OD*1.25, OD*1.25, Hmax]);
    }
}

```


[User]
Okay, so I'm looking to design a really sturdy workbench, and I'd like to use OpenSCAD so that I can easily customize the dimensions. I've seen some designs online that use a kind of "stud" or rectangular post construction, and I think that's what I want.

Essentially, I need a parametric workbench design. Here are the core features:

*   **Units:** I want to be able to specify whether the dimensions are in inches or millimeters. A simple variable that toggles between the two would be great, maybe using a 1 for inches and a 0 for mm.
*   **Overall Dimensions:** The workbench should have parameters for overall width, height, and depth.
*   **Stud Construction:** The frame should be built using rectangular "studs". These studs have a uniform cross-section but can vary in length. I want to be able to orient the studs along the X, Y, or Z axes. I'd like a way to specify if a stud is horizontal along x (hx), horizontal along y (hy) or vertical (v).
*   **Legs and Doublers:** The workbench needs four main legs, and then "doublers" that essentially reinforce the legs. The doublers would be shorter studs positioned alongside the legs.
*   **Braces:** It should have horizontal braces connecting the legs near the bottom, and then horizontal and vertical pieces to support the top of the workbench.
*   **Top:** I want an optional top surface, and I'd like to specify the thickness. If it's 0, then no top should be present. I'd also like to add an additional optional shelf along the bottom.
*   **Parametric:** All key dimensions (overall size, stud lengths, top thickness, brace height) should be controlled by variables. I should be able to define the height where the bottom braces connect to the studs.

Essentially, I need a module for an individual "stud" with a length and orientation parameter, and then another module for the full "workbench" assembly that takes the other parameters. I'd like to be able to render the whole thing with a single call at the end.

I'm not looking to use any specific libraries, I want to keep it all in a single .scad file or maybe two .scad files if needed, for clarity. Thanks!

[Assistant]
workbench.scad:
```

// inches or mm?
units=1;			// [1:inches,0:mm]

benchWidth=60;

benchHeight=30;

benchDepth=32;

braceHeight=8;
// 0 = no top
topThickness=0.75;

// this is an openScad parametric version of Thingiverse item 1456181 by JenniferG

// stud orientation
hx=1*1;	// horizontal x
hy=2*1;	// horizontal y
v=3*1;	// vertical

module stud(length=72,orient=v) {
	echo(length = length);
	if (orient==hy) {
		cube([1.5,length,3.5]);
	} else if (orient==hx) {
		cube([length,1.5,3.5]);
	} else {
		cube([1.5,3.5,length]);
	}
}

module bench(length=72,width=24,height=32,braceHeight=8,topThickness=0.75) {
	// legs
	translate([3,3,0]) stud(height-topThickness);
	translate([3+length-6-1.5,3,0]) stud(height-topThickness);
	translate([3,3+width-3.5-3,0]) stud(height-topThickness);
	translate([3+length-6-1.5,3+width-3.5-3,0]) stud(height-topThickness);
	// leg doublers - left
	translate([1.5,3,braceHeight]) stud(height-braceHeight-3.5);
	translate([1.5,3,0]) stud(braceHeight-3.5);
	translate([1.5,3+width-3.5-3,braceHeight]) stud(height-braceHeight-3.5);
	translate([1.5,3+width-3.5-3,0]) stud(braceHeight-3.5);
	// leg doublers - right
	translate([3+length-6,3,braceHeight]) stud(height-braceHeight-3.5);
	translate([3+length-6,3,0]) stud(braceHeight-3.5);
	translate([3+length-6,3+width-3.5-3,braceHeight]) stud(height-braceHeight-3.5);
	translate([3+length-6,3+width-3.5-3,0]) stud(braceHeight-3.5);
	// leg braces
	translate([1.5,3,braceHeight-3.5]) stud(width-3, orient=hy);
	translate([3+length-6,3,braceHeight-3.5]) stud(width-3, orient=hy);

	// lower brace
	translate([1.5,width-5,braceHeight-3.5]) stud(length-3, orient=hx);
	translate([1.5,3+(width-3)/2-0.75,braceHeight-3.5]) stud(length-3, orient=hx);
	// lower brace fillers
	translate([(length-3)/3-0.75,3+(width-3)/2+0.75,braceHeight-3.5]) stud(width-5-3-(width-3)/2-0.75, orient=hy);
	translate([(length-3)*2/3-0.75,3+(width-3)/2+0.75,braceHeight-3.5]) stud(width-5-3-(width-3)/2-0.75, orient=hy);

	// horizontals
	translate([1.5,1.5,height-topThickness-3.5]) stud(length-3, orient=hx);
	translate([0,0,height-topThickness-3.5]) stud(length, orient=hx);
	translate([3,1.5+3.5+1.5,height-topThickness-3.5]) stud(length-6, orient=hx);
	translate([3,3+width-3.5-3-1.5,height-topThickness-3.5]) stud(length-6, orient=hx);
	translate([4.5,3+width-3.5-3-1.5+3.5,height-topThickness-3.5]) stud(length-9, orient=hx);

	// front-to-backs
	translate([0,1.5,height-topThickness-3.5]) stud(width-1.5, orient=hy);
	translate([1.5,3,height-topThickness-3.5]) stud(width-3, orient=hy);
	translate([length-1.5,1.5,height-topThickness-3.5]) stud(width-1.5, orient=hy);
	translate([length-3,3,height-topThickness-3.5]) stud(width-3, orient=hy);

	// fillers
	translate([(length-6)/3-0.75+3,8,height-topThickness-3.5]) stud(width-13, orient=hy);
	translate([(length-6)*2/3-0.75+3,8,height-topThickness-3.5]) stud(width-13, orient=hy);
	translate([(length-9)*2/4-0.75+3,width-3.5,height-topThickness-3.5]) stud(2, orient=hy);
	translate([(length-9)*2/4-0.75+3,3,height-topThickness-3.5]) stud(3.5, orient=hy);

	// these fillers are probably overkill - leaving them in since original design by JenniferG had them
	translate([(length-9)*1/4-0.75+3,width-3.5,height-topThickness-3.5]) stud(2, orient=hy);
	translate([(length-9)*3/4-0.75+3,width-3.5,height-topThickness-3.5]) stud(2, orient=hy);
	translate([(length-9)*1/4-0.75+3,3,height-topThickness-3.5]) stud(3.5, orient=hy);
	translate([(length-9)*3/4-0.75+3,3,height-topThickness-3.5]) stud(3.5, orient=hy);

	// and finally...the top sheet
	if (topThickness > 0) {
		translate([0,0,height-topThickness]) cube([length,width,topThickness]);
		// and even a lower shelf while we're at it
		translate([1.5,3+(width-3)/2-0.75,braceHeight]) cube([length-3,(width-3)/2+0.75-3.5,topThickness]);
		// if I were making this in real life, I'd have fit the lower shelf around the back legs...but I'm too lazy right now
	}
}

//scaleFactor = (units == "inches")?25.4:1;
scaleFactor = units*24.4+1;

scale(scaleFactor) {
	bench(benchWidth,benchDepth,benchHeight,braceHeight,topThickness);
}

```


[User]
Okay, I'd like to design an SD card grip, and I'm hoping you can generate the OpenSCAD code for it. I've seen some designs out there, but I want something that I can easily customize. I'll give you the basic design parameters and some important features:

The grip should essentially be a rounded rectangle with a slot for the SD card and a hole for a finger grip. The overall shape should be easily printable without supports. The core of the design is like a rounded rectangular "body" with a cut-out for the SD card and a finger hole, but instead of just cutting out the SD card slot from the base shape, I would like for it to have a "support wall" that makes printing easier and cleaner, but which can later be cut away. Here are the main parameters I'd like to be able to control:

*   **Total Length:** The overall length of the grip.
*   **Total Width:** The width of the grip, typically matching the SD card's width.
*   **Total Thickness:**  The overall thickness of the grip.
*   **SD Slot Depth:**  The depth of the SD card slot. This should be shallower than the card thickness, ideally designed to engage with a push-to-release mechanism if available.
*   **SD Slot Thickness:** The thickness of the SD card slot, matching the SD card's thickness.
*   **Grip Hole Diameter:** The diameter of the finger hole.
*   **Min Wall Between SD Slot and Hole:** The minimum distance between the edge of the SD slot and the edge of the grip hole.
*   **Support Wall Thickness:**  The thickness of the support wall around the SD card slot. This should be thin, maybe a single extrusion width. If set to 0, the support wall should be disabled.

Here’s a little more detail on the features. The body itself should have rounded ends (or be smoothly curved in some way) on the sides. I don’t want harsh edges.  The SD card slot should not be a full depth cut. The support wall should be built into the SD card cut, creating a narrow wall to make printing easier. I’d like it to also have a small amount of space between the actual card and the walls of the cutout. I'd like the code to be parametric and customizable, meaning that I should be able to change all of the above parameters.

I do have some very basic variables which I think make sense to include to help ensure that the model is manifold.

*   **eps1**: A very small value, for example, 0.01, used for manifold-preserving operations.
*   **eps2**: Twice the value of eps1.
*   **eps4**: Four times the value of eps1.

I think that should cover all the basic elements of the design, let me know if you have questions! I'm not expecting you to use any libraries, just generate a new .scad file.

[Assistant]
sd_grip.scad:
```
// SD card grip. Includes a support wall for easy printing. After printing
// remove the support wall with a knife, and glue the SD card with
// super glue.

// Round surfaces smoothness. Small numbers such as 3, 4, 5 give interesting
// results
$fn=120;

// Total model model.
total_length = 24;

// Total model width. Typically matches the width of the SD crd.
total_width = 24;

// Total model thickness.
total_thickness = 5;

// SD slot depth. Make sure it's small enough to enable proper insertion
// of the SD card, including extra distance for those 'toggle' in/oout
// mechanism when available.
sd_slot_depth = 2.0;

// SD slot thickness.
sd_slot_thickness = 2.4;

// Diameter of the grip thumb hole.
grip_hole_diameter = 17;

// Minimal distance between sd card slot and grip thumb hole.
sd_slot_to_grip_min_wall = 3;

// Thickness of slot support wall. Cut with a knife after printing.
// Set to achive wall thickness of a single extrusion pass. Set
// to zero to disable.
support_wall_thickness = 0.5;

// Small positive numbers for maintaining manifold. No need tto change.
eps1 = 0.01;
eps2 = 2*eps1;
eps4 = 4*eps1;

// Part before any cutting.
module body() {
  intersection() {
    hull() {
      translate([-(total_length-total_width/2), 0, 0])
          cylinder(d=total_width, h=total_thickness);
      translate([-eps1, -total_width/2, 0])
          cube([eps1, total_width,      total_thickness]);
    }
    // Intesection is useful in case total_length < total_width.
    translate([-total_length, -total_width/2, 0])
      cube([total_length, total_width, total_thickness]);
  }
}

// Substractive.
module sd_slot() {
  cube_x = (support_wall_thickness <= 0)
      ? sd_slot_depth + eps1
      : sd_slot_depth - support_wall_thickness;
  translate([-sd_slot_depth,
             -(total_width/2 + eps1),
             (total_thickness - sd_slot_thickness)/2])
  #cube([cube_x,
         total_width+eps2,
         sd_slot_thickness]);
}

// Substractive.
module grip_hole() {
  difference() {
    translate([-(total_length-total_width/2), 0, -eps1])
      cylinder(d=grip_hole_diameter, h=total_thickness+eps2);
    translate([-(sd_slot_depth+sd_slot_to_grip_min_wall),
               -total_width/2,
               -eps2 ])
        cube([sd_slot_depth+sd_slot_to_grip_min_wall,
               total_width,
               total_thickness+eps4]);
  }
}

module main() {
  difference() {
    body();
    sd_slot();
    grip_hole();
  }
}

main();

```


[User]
I'm looking to create a customizable wheel for a marble run, similar to the one I saw on Thingiverse (thing:1357028). The basic design is a wheel with a central hub, a rim, and spokes connecting them. I'd like to be able to control a few key parameters:

*   **Outer Diameter:** The overall diameter of the wheel.
*   **Wall Thickness:** The thickness of the outer rim.
*   **Wheel Thickness:** The overall thickness of the wheel.
*   **Number of Spokes:** How many spokes connect the hub and rim.
*   **Spoke Thickness:** The thickness of each spoke.
*   **Spoke Width:** The width of each spoke.
*   **Hub Thickness:** The thickness of the central hub.
*   **Axle Diameter:** The diameter of the hole in the hub for the axle.

I'd also like to have a module to easily generate multiple wheels in a grid, controlled by:

*   **Number of Wheels X:** The number of wheels in the x-direction.
*   **Number of Wheels Y:** The number of wheels in the y-direction.

I'd like the code to be written in OpenSCAD and I'm not too worried about any specific libraries, just something that will be easy to work with, and I would like it all in a single .scad file if possible. Let me know if you need more details.

[Assistant]
Bensfinalwheelspinningthing.scad:
```
outer_diameter=50;
wall_thickness=2;
thickness=5;
spokes=4;
spoke_thickness=16;
spoke_width=3;
hub_thickness=16;
axle=7;

//	How many to make?
//########################################################
number_x=4;	// Along the x-axis
number_y=2;	// Along the y-axis
//########################################################

//outer_diameter=50, axle=4, spokes=3, wall_thickness=2, thickness=5, spoke_thickness=thickness/2, spoke_width=5, hub_thickness=4

$fn=200;

module wheel()
{

difference()
{

union()
{

//########################################################
// Outer Ring
//########################################################

//########################################################
// Hub
//########################################################

cylinder(r=axle/2+wall_thickness, h=hub_thickness );

//########################################################
// Spokes
//########################################################
//cylinder(r=0.30*outer_diameter, h=2 );

for (i=[0:spokes-1])
{

rotate([0,0,(360/spokes)*i])
translate([-spoke_width/2,0,0])
cube([spoke_width,outer_diameter/2-wall_thickness,spoke_thickness]);

}

// Axle Hole.
}
translate([0,0,-1])
cylinder(r= axle/2, h=hub_thickness+2);
}
}

//#######################################################
//	Make some!
//#######################################################

for (i=[0:number_x-1], j=[0:number_y-1])
{
translate([i*(outer_diameter+wall_thickness),j*(outer_diameter+wall_thickness),0])
wheel();
}

{

//cylinder(r=0.30*outer_diameter, h=2 );

}
```


[User]
Hey there! I'm looking to design a parametric webcam cover for an Apple Thunderbolt Display. I've got a pretty specific shape in mind, and I'd like it to be easily customizable for different displays.

Basically, the cover needs to clip onto the top of the display. The display itself has a unique cross-section – it's roughly trapezoidal. I need a module to define this trapezoid that allows for the top and bottom widths, as well as height, to be easily set as parameters. This shape is important as it determines the clip. The top width will always be smaller than the bottom. I'll be calling this module `display_shape`. It should accept three parameters: `top_width`, `bottom_width` (which will be the longer base), and `height`.

The cover itself will be designed around this shape and will be created using minkowski(). I want to take the intersection of the trapezoid and a rectangular solid, then apply a minkowski operation using a sphere to round the edges. This will create the main clipping feature of the cover. The height of the rectangular solid is also a parameter. Let's call this module `clip_feature` and the parameters should include: the display shape parameters: `top_width`, `bottom_width`, and `height`, as well as the `clip_depth`, and the `round_radius`.

I also want to add a decorative element: a little 8-bit heart on the front. It'll be a simple design made with squares, and I'd like to be able to scale and move it independently. I'd like the heart itself to be a module named `heart`. I would like to be able to extrude this shape.

Finally, I need a main module to put it all together called `webcam_cover`. It will rotate the `clip_feature`, scale and rotate the `heart`, translate it into position and extrude it, and combine them to create the final piece. I want to be able to scale the final piece.

Could you generate a parametric OpenSCAD design for this? I would like to make sure that the whole design is fully parametric for all the sizes and positions. I'd like to avoid using any external libraries if possible. Also, please ensure that the code is well-commented and easy to understand. I plan on using this as a starting point for further customizations.

[Assistant]
thunderboltcamcover.scad:
```

module imac_shape(h = 5)
{
//iMac 5K
//w1 = 6; w2 = w1 + 9.5;

// Apple Thunderbold Display 27"
w1 = 22; w2 = w1 + 6.5;

linear_extrude(height = h, center = true, convexity = 10)
polygon(points = [[0,0],[w1,0],[w2,18],[0,18]], paths = [[0,1,2,3]], convexity = 2);
}

module cover(){
difference(){
$fn=50;
minkowski() {
 intersection(){
  imac_shape(20);
  translate([7,7,0])cube([58, 18, 15], center=true);
 }
sphere(1.7);
}
imac_shape(20);
}
}

module 8bit_heart() {
      difference(){
        square([7,7],center=true);
        translate ([-3.5, 2.5, 0]) square(1);
        translate ([2.5, 2.5, 0]) square(1);
        translate ([-0.5, 2.5, 0]) square(1);
        translate ([-3.5, -3.5, 0]) square([1, 3]);
        translate ([-2.5, -3.5, 0]) square([1, 2]);
        translate ([-1.5, -3.5, 0]) square([1, 1]);
        translate ([2.5, -3.5, 0]) square([1, 3]);
        translate ([1.5, -3.5, 0]) square([1, 2]);
        translate ([0.5, -3.5, 0]) square([1, 1]);
      }

}

module apple_cover(){

    rotate([90,0,180])cover();
    scale(1.7) rotate([-90,0,90]) translate([0,-4.7,-2]) linear_extrude(height = 1.5) 8bit_heart();
}

rotate([-90,0,-90]) apple_cover();

```


[User]
I'd like to get a parametric plant guide designed in OpenSCAD. I've got a basic idea in mind, but I need it to be flexible for different plant sizes and attachment points.

The guide should consist of two curved arms connected by a straight section. One arm will attach to a stake or pole (the "small" arm), and the other will support the plant (the "large" arm). Both arms should have a consistent thickness and width. The curves should be arcs, not other kinds of curves. The arms should be connected by a straight section and then the large and small parts need to be connected with fillets.

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

*   **`Guide_Tickness`**: The thickness of the guide (both arms).
*   **`Guide_Width`**: The width of the guide (both arms).
*   **`Small_Radius`**: The radius of the arc of the "small" arm. This represents the size of the stake or pole it attaches to.
*   **`Large_Radius`**: The radius of the arc of the "large" arm. This controls the space given to the plant.

The small arm's arc should be approximately 220 degrees and the large arm's arc should be about 310 degrees. There should be a fillet between the end of each arc and the beginning of the connector section. The fillets should be half the `Guide_Width`.

I'm also a fan of smooth curves, so I'd like to make sure `$fa` and `$fs` are set to reasonable values. I don't need the variables themselves to be parameters, but feel free to choose good values. I prefer `$fa=5` and `$fs=0.5`.

I would prefer to have this as one `.scad` file. I'm not using any libraries. I would appreciate it if you would provide the complete code for this single `.scad` file.

[Assistant]
Plant_Guide.scad:
```
Guide_Tickness = 4; // [1:10]
Guide_Width = 3; // [2:6]

// Radius of the thing you fix the guide to
Small_Radius = 3; // [1:10]

// How much room do you give your plant?
Large_Radius = 20; // [10:50]

module arc(radius, thick, angle){
	intersection(){
		union(){
			rights = floor(angle/90);
			remain = angle-rights*90;
			if(angle > 90){
				for(i = [0:rights-1]){
					rotate(i*90-(rights-1)*90/2){
						polygon([[0, 0], [radius+thick, (radius+thick)*tan(90/2)], [radius+thick, -(radius+thick)*tan(90/2)]]);
					}
				}
				rotate(-(rights)*90/2)
					polygon([[0, 0], [radius+thick, 0], [radius+thick, -(radius+thick)*tan(remain/2)]]);
				rotate((rights)*90/2)
					polygon([[0, 0], [radius+thick, (radius+thick)*tan(remain/2)], [radius+thick, 0]]);
			}else{
				polygon([[0, 0], [radius+thick, (radius+thick)*tan(angle/2)], [radius+thick, -(radius+thick)*tan(angle/2)]]);
			}
		}
		difference(){
			circle(radius+thick);
			circle(radius);
		}
	}
}

// Set number of faces
$fs=0.5;
$fa=5;

// Draw Small Arc
translate([0,Small_Radius+Guide_Width/2,0])
rotate([0,0,20])
linear_extrude(height=Guide_Tickness)
    arc(Small_Radius, Guide_Width, 220);
;

// Draw Small Arc Fillet
translate([0,Small_Radius+Guide_Width/2,0])
rotate([0,0,220])
translate([0,-Small_Radius-Guide_Width/2,0])
linear_extrude(height=Guide_Tickness)
        arc(0, Guide_Width/2, 180);
;

// Draw Large Arc
translate([0,-Large_Radius-Guide_Width/2,0])
rotate([0,0,245])
linear_extrude(height=Guide_Tickness)
    arc(Large_Radius, Guide_Width, 310);
;

// Draw Large Arc Fillet
translate([0,-Large_Radius-Guide_Width/2,0])
rotate([0,0,130])
translate([0,-Large_Radius-Guide_Width/2,0])
linear_extrude(height=Guide_Tickness)
    arc(0, Guide_Width/2, 180);
;

```


[User]
I need a parametric OpenSCAD file to generate customizable buttons. I'd like to be able to adjust the following:

*   **Button Thickness:** The thickness of the main part of the button, excluding any trim. I'd like to specify this in millimeters.
*   **Button Diameter:** The overall diameter of the button. Also in millimeters.
*   **Trim Thickness:**  The thickness or width of any raised trim around the button's edge. This should be adjustable in millimeters as well. I want the option to make it zero if needed.
*   **Trim Height:**  How high the trim stands above the main part of the button. Again, in millimeters.
*   **Number of Thread Holes:** The number of holes for thread, from 0 to 8.
*   **Hole Distance from Center:** The radial distance of the thread holes from the button's center.  I want to control this as a fraction of the button's inner diameter, expressed as a value between 0 and 1.
*   **Hole Size:** The diameter of each thread hole, in millimeters.

Essentially, I need to generate a basic button with a cylindrical body and the option of a cylindrical trim around the edge. The thread holes need to be positioned evenly around the button's center, based on the specified number, distance from the center, and hole diameter.

The file should also handle edge cases. For example, If I set the trim thickness to zero, it should generate a simple disc without a trim. Or, if I request no thread holes, it should generate the disc and/or trim without them.

I would like this to be one .scad file. I don't believe any external libraries should be needed.

[Assistant]
ButtonMaker.scad:
```
/* [Button] */
// How thick should the button be in the center? (mm)
buttonThickness = 2; // [2:2.0 millimetres,2.5:2.5 millimetres,3:3.0 millimetres,5:5.0 millimetres,10:10 millimetres]

// What is the distance from one side of the button to the other? (mm)
buttonDiameter = 14; // [7:40]

// How wide should the trim around the button be? (mm)
buttonTrimThickness = 2; // [0:39]

// How far off of the top of the button should the trim stand? (mm)
buttonTrimHeight = 1.5; // [1.5:1.5 millimetres,2:2.0 millimetres,2.5:2.5 millimetres,3:3.0 millimetres]

/* [Threadholes] */
// How many threadholes should the button have?
holeCount = 4; // [0:8]

// How far from the centre should the threadholes be (fraction out of 10)?
holeDistanceToCentre = 5; // [0:10]

// How big should each threadhole be? (mm)
holeSize = 2; // [1:6]

// END OF CUSTOMIZER VARIABLES

innerDiameter = buttonDiameter - (buttonTrimThickness-0.001 * 2);	// Used to line things up so they won't collide with the trim

// Lays out the  cylinders that will be used to form the threadholes
module holes() {
	if ( (holeCount > 0) && (holeCount != 1) ) {	// Avoid a divide-by-zero error
		rotationDegrees = 360 / holeCount;	// This places the holes equally around the centre

		for(currentRotation = [0 : rotationDegrees : 359]) {	// Stop at 359 degrees, because 360 degrees is coterminal to 0 degrees
			singleHole( ((holeDistanceToCentre * .05) * innerDiameter * cos(currentRotation)),
				((holeDistanceToCentre * .05) * innerDiameter * sin(currentRotation)) );

			/*	Multiplying by .05 makes the distance to centre a fraction of 1, and then divides it by two (diameter to radius)
				The x coordinate is found by multiplying the sine of the current angle by the distance from the centre
				The y coordinate is found the same way, except using the cosine instead of the sine. */
		}
	} else if ( (holeCount > 0) && (holeCount == 1) ) {
		singleHole(0, 0);	// If there's only one hole, just put it in the middle
	}
}

// Defines a single threadhole cylinder; used in holes()
module singleHole(x, y) {
	translate([x,y,0]) cylinder(h=(buttonThickness + buttonTrimHeight) * 3, d=holeSize, center=true, $fn=12);
}

// The button, minus the trim
module buttonInnerDisc() {
	difference() {
		cylinder(h=buttonThickness, d=innerDiameter);
		holes();
	}
}

// Just the trim for the button
module buttonTrim() {
	difference() {
		cylinder(h=buttonThickness + buttonTrimHeight, d=buttonDiameter);
		cylinder(h=buttonThickness * 4, d=innerDiameter, center=true);
	}
}

// Compile everything together and make the final button
module makeButton() {
	buttonTrim();
	buttonInnerDisc();
}

makeButton();
```


[User]
Hi, I'm looking to design a customizable knob for a rotary encoder, and I'd like some help generating the OpenSCAD code. I'd like it to be parametric so that I can easily change its shape, size, and axle fit.

Essentially, I want a knob that can be either a base cylinder shape or a flower shape.

For the cylinder shape, I want to be able to:
*   Set the outer radius of the main cylinder.
*   Round the top edge of the cylinder with a specified radius.
*   Set the number of sides/facets on the main cylinder (e.g., for a triangle, square, etc. – basically a polygon).
*   Cut away a specific number of cylinders from the base shape.
*   For each cut-out cylinder, specify its radius, the offset from the center, and the number of sides. Also, I need to be able to scale these cylinders from the base and give an angle for the cylinder.
*   I'd like to be able to set an offset angle for the cut-out cylinders, too.

For the flower shape, I want to be able to:
*   Set the number of "petals" (leafs).
*   Set the offset from center for each leaf.
*   Set the inner and outer radius of each leaf.

For the axle hole, I need to be able to set:
*   The total height of the knob.
*   The type of axle hole (either "D" shape or "normal" circle).
*   The depth of the hole.
*   For the "D" shape, an additional circle radius and depth is needed.
*   And of course the standard radius of the axle hole for "normal" shape.

I'm thinking a few precalculations should be avoided by the user: the angle between cylinder cutouts and flower petals.

I'm hoping to get all of this in a single OpenSCAD file, if that's possible.

Could you help me generate this code? Let me know if you need any clarification.

[Assistant]
knob.scad:
```
/* Knob
Jack Ha 2016
*/

// C = Cylinder, F = Flower
SHAPE = "C";

// ** Cylinder options OUTER RADIUS
CYLINDER_R_OUTER = 26;
// 'amount of taper'
ROUNDING_R = 1.5;
C_FN = 4;

C_CUT_NUM = 4;  // often the same as C_FN
C_CUT_R = 10; //radius
C_CUT_OFFSET = 15;
C_CUT_FN = 5; // vertices
C_CUT_SCALE = 1;  // normally 1, scale the cylinder being cut from base, try it out :-)
C_CUT_ANGLE = 36;
// precalculation, do not change
C_ANGLE = 360 / C_CUT_NUM;
C_ANGLE_OFFSET = 0.5 * C_ANGLE;  // 0 or 0.5*C_ANGLE

// ** Flower options
F_NUM_LEAFS = 3;  // 5, 7, 3
F_LEAF_OFFSET = 22.5;  // 20, 20, 20
F_LEAF_R_INNER = 5;  // 2.5, 2, 5
F_LEAF_R_OUTER = 1.5;  // 6, 5, 2
// precalculation, do not change
F_ANGLE = 360 / F_NUM_LEAFS;

// AXLE options

// HEIGHT=13 for 20mm pots/rotary encoders, 10 for 15mm; or through hole, then choose something you like^^
H = 8.5;

// D for D shape or N for normal
AXLE_TYPE = "N";

// depth of hole, optionally leave 1 mm on top (H-1) or through hole (H+1)
AXLE_D = H - 1;
// for D axle hole, there is an extra round part
AXLE_D2 = 2.5;
// for 6mm axle
AXLE_R = 3.05;

// for 6mm D shaped axle
AXLE_D_R = 3.2;

module pin_d(r, d) {
	translate([0,0,-0.1])
	difference() {
		cylinder(r=r, h=0.1+d, $fn=30);
		translate([1.6,-50,-1])
		cube([100,100,100]);
	}
}

module pin(r, d) {
	translate([0,0,-0.1])
    cylinder(r=r, h=0.1+d, $fn=30);
}

M = [ [ 1, 0, 0, 0 ],
       [ 0, 1, 0.3, 0 ],  // The "0.7" is the skew value; pushed along the y axis
       [ 0, 0, 1, 0 ],
       [ 0, 0, 0, 1 ] ] ;

module base_cylinder() {
    difference() {
	minkowski() {
        //multmatrix(M) {
        //    union() {
		//sphere(r=ROUNDING_R, $fn=12);
		cylinder(r1=ROUNDING_R, r2=0, h=ROUNDING_R, $fn=C_FN);
		cylinder(r=CYLINDER_R_OUTER-ROUNDING_R, h=H-ROUNDING_R, $fn=C_FN);
        //    }
        //}
	}
    for (i=[0:C_CUT_NUM-1]) {
            rotate([0,0,C_ANGLE_OFFSET+C_ANGLE*i])
            translate([C_CUT_OFFSET,0,-0.1])
            rotate([0,0,C_CUT_ANGLE])
            scale([C_CUT_SCALE,1,1])

            //multmatrix(M) {
            //union() {
                cylinder(r=C_CUT_R, h=H+0.2, $fn=C_CUT_FN); }
            //}
        //}
    }
}

module flower() {
    for (i=[0:F_NUM_LEAFS-1]) {
        rotate([0,0,F_ANGLE*i])
        hull() {
            cylinder(r=F_LEAF_R_INNER, h=H);

            translate([F_LEAF_OFFSET,0,0])
            cylinder(r=F_LEAF_R_OUTER, h=H);
        }
    }
}

rotate([180,0,0])
difference() {
    if (SHAPE == "C") {
        base_cylinder();
    } else if (SHAPE == "F") {
        flower();
    }
    if (AXLE_TYPE == "D") {
        pin_d(AXLE_D_R, AXLE_D);
        pin(AXLE_D_R+0.2, AXLE_D2);
    } else {
        pin(AXLE_R, AXLE_D);
    }
}
```


[User]
Hey, I'm trying to make a 3D model based on a simple 2D shape, then extruding it. I've got a basic starting point, but I need to make it fully parametric and easier to control.

Essentially, I want a rectangular plate with a circle cut out of it. The rectangle and circle should have their own individual size parameters, and their positions should be controllable. The extrusion depth should also be a parameter.

Could you write me an OpenSCAD file (or files) that does this? I'd really appreciate if the code was well-commented so I can understand how everything works. No need to include any libraries, it's simple enough that we shouldn't need them.

Here's a breakdown:

1.  **Plate Dimensions:** I need to be able to specify the width and height of the rectangular plate. Let's call these parameters `plate_width` and `plate_height`.

2.  **Circle Dimensions:** I need a diameter parameter for the circle; let's call it `circle_diameter`.

3.  **Circle Position:** The circle's center should be able to be positioned relative to the plate's center. I'd like parameters `circle_x_offset` and `circle_y_offset` for this.

4.  **Extrusion Depth:** I need to control how thick the resulting 3D object is using an `extrusion_depth` parameter.

Let me know if you need any more information from me!

[Assistant]
Full_Mod.scad:
```
module flatstuff()
{
translate([11,0,0])square([33,22]);
translate([11,11,0]) circle(11);
}
linear_extrude(height = 75) flatstuff();
```


[User]
Hi, I'm looking to create a parametric design for brackets that will allow me to build shelving racks from T-slot aluminum extrusion. I want to be able to mount the extrusion in a way that it forms a smooth slide, kind of like a drawer rail, so I can slide organizers or containers along it.

Specifically, I need the following features:

*   **Parametric Extrusion Size:** The design should be parametric so I can adjust it for different extrusion sizes (though I'm mainly focused on 15mm Misumi or OpenBeam 1515 right now).
*   **Bracket Base Thickness:** I'd like to be able to control the base thickness of the bracket.
*   **Screw Holes:** The design should have holes for mounting the brackets to the extrusion, with customizable diameters for both screw body and screw heads.
*   **Extrusion Channel Fit:** The brackets should include features that fit into the T-slot grooves and channels of the extrusion, to properly align and secure the brackets and provide good support. These should also be parametric to accommodate different extrusion types.
*   **Optional "Fingers":** It would be great if the design had an option to include "fingers" or tabs that go inside the extrusion channels for added stability, but it should also work without them.
*   **Dual Brackets:** I need an option to generate a mirrored pair of brackets (both left and right side) to use on opposite sides of a rack, or just a single bracket if needed.
*   **Shelf Support:** The bracket should have an extended portion to support a shelf or the bottom of an organizer sliding along the rails.
*   **Vertical Leg Support:** There should be a way to mount another extrusion perpendicularly at the bottom for the vertical legs of the rack. This should also have a mounting screw hole.
*  **Rounded corners:** Should have rounded corners so no sharp edges will be present.

I'd like this design to be done in OpenSCAD so that I can easily customize it. I think it would be best if there was at least one file for the bracket itself and any necessary modules or calculations.

Could you generate the necessary OpenSCAD files, making sure to use clearly defined parameters? I'm not looking to use any external libraries beyond what is strictly necessary, but if you need to use something like the BOSL library for some helper modules, please feel free to do so.

[Assistant]
tslot_rack.scad:
```
// Extrusion Sleving Clips
// Design by Marius Gheorghescu, April 2016

// thickness of the bracket base should
bracket_thickness = 5;

// screw diameter plus clearance
screw_dia = 3.3;

// screw head diameter plus clearance
screw_head_dia = 5.7;

// extrusion size in mm
extrusion_size = 15;

// extrusion outside width
extrusion_channel_width = 5.55;

// extrusion nut channel width
extrusion_channel_deep = 4.4;

// extrusion groove width
extrusion_groove_width = 3.6;

// extrusion thickness
extrusion_groove_deep = 1.15;

// add "fingers" that go inside the extrusion?
fingers = 1; // [1: Yes, 0: No]

// generate left and right clips?
dual = 1; // [1: Yes, 0: No]

/* [Hidden] */

epsilon = 0.01;
$fn=32;

module round_rect(x, y, r, fn=20)
{
    $fn=fn;
    radius = r;
    hull() {
        translate([-x/2 + radius, y/2 - radius, 0])
            circle(r=radius, center=true);
        translate([x/2 - radius, y/2 - radius, 0])
            circle(r=radius, center=true);
        translate([-x/2 + radius, -y/2 + radius, 0])
            circle(r=radius, center=true);
        translate([x/2 - radius, -y/2 + radius, 0])
            circle(r=radius, center=true);
    }
}

module extrusion_profile(channels=1, all_sides=1, offset=0.001)
{
    minkowski ()
    {
        difference() {
            square([extrusion_size, extrusion_size], center=true);

            // grooves
            translate([0, extrusion_size/2 - extrusion_groove_deep/2])
                square([extrusion_groove_width, extrusion_groove_deep], center=true);

            if (all_sides) {
                translate([0, -extrusion_size/2 + extrusion_groove_deep/2])
                    square([extrusion_groove_width, extrusion_groove_deep], center=true);

                rotate([0,0, 90])
                translate([0, extrusion_size/2 - extrusion_groove_deep/2])
                    square([extrusion_groove_width, extrusion_groove_deep], center=true);

                rotate([0,0, 90])
                translate([0, -extrusion_size/2 + extrusion_groove_deep/2])
                    square([extrusion_groove_width, extrusion_groove_deep], center=true);

            }

            if (channels)
            {
                // nut channels
                translate([0, extrusion_size/2 - extrusion_channel_deep/2 - extrusion_groove_deep/2])
                    square([extrusion_channel_width, extrusion_channel_deep - extrusion_groove_deep], center=true);

                if (all_sides) {
                    translate([0, -extrusion_size/2 + extrusion_channel_deep/2 + extrusion_groove_deep/2])
                        square([extrusion_channel_width, extrusion_channel_deep - extrusion_groove_deep], center=true);

                    rotate([0,0, 90])
                    translate([0, extrusion_size/2 - extrusion_channel_deep/2 - extrusion_groove_deep/2])
                        square([extrusion_channel_width, extrusion_channel_deep - extrusion_groove_deep], center=true);

                    rotate([0,0, 90])
                    translate([0, -extrusion_size/2 + extrusion_channel_deep/2 + extrusion_groove_deep/2])
                        square([extrusion_channel_width, extrusion_channel_deep - extrusion_groove_deep], center=true);

                }
            }
        }

        circle(r=offset, center=true);
    }
}

module screw(len)
{
    translate([0, 0, len/2 - epsilon])
    cylinder(r=screw_head_dia/2, h=len, center=true);

    translate([0, 0, -len/2])
        #cylinder(r=screw_dia/2, h=len, center=true);
}

module side_clip()
{
    difference() {
        hull () {
            linear_extrude(bracket_thickness) {
                round_rect(extrusion_size, extrusion_size + 2*screw_head_dia, 1);
            }

            translate([0, 0, extrusion_size/2 + bracket_thickness])
            rotate([0,90,0])
            #linear_extrude(extrusion_size/2) {
                round_rect(extrusion_size, extrusion_size, 1);
            }

        }

        translate([0,-extrusion_size/2 - screw_head_dia/2,bracket_thickness])
            screw(100);

        translate([0, extrusion_size/2 + screw_head_dia/2, bracket_thickness])
            screw(100);

        translate([extrusion_size - (extrusion_size-extrusion_groove_width)/2 ,  0, 0])
            linear_extrude(10*extrusion_size)
            rotate([0, 0, 90]) extrusion_profile(0);

        translate([-bracket_thickness + extrusion_groove_width/2,0, extrusion_size/2])
        rotate([0,-90,0])
        screw(100);
    }
}

module rack_clip(fingers=0)
{
    // fingers
    if (fingers)
    difference() {
        translate([0,0,-extrusion_size/8])
        union()
        {
            linear_extrude(extrusion_size/4, center=true) {
                difference() {
                    square([extrusion_size, extrusion_size], center=true);

                    rotate([0,0,180])
                    extrusion_profile(1,1, 0.3);

                    translate([extrusion_size/2 + extrusion_channel_width/2,0,0])
                        square([extrusion_size, extrusion_size], center=true);

                }
                //%extrusion_profile(0,1);
            }
        }

    }

    difference() {
        hull() {
            // shelf support cap
            translate([0,0,-extrusion_size/4-bracket_thickness/2])
            linear_extrude(bracket_thickness, center=true)
                round_rect(extrusion_size, extrusion_size, 0.5);

            // side clip
            translate([0, 2*bracket_thickness +  0*extrusion_size/2, - extrusion_size/4])
            rotate([0,90,0])
            linear_extrude(bracket_thickness, center=true)
                round_rect(2*extrusion_size, extrusion_size, 0.5);

            // shelf clip
            #translate([0, extrusion_size/2 + bracket_thickness, extrusion_size/4])
            rotate([90,0,0])
            linear_extrude(2*bracket_thickness, center=true)
                round_rect(extrusion_size, extrusion_size, 0.5);

        }

        // leg screw
        translate([-bracket_thickness + extrusion_groove_width/2, extrusion_size - bracket_thickness, -extrusion_size*3/4])
        rotate([0,-90,0])
            screw(100);

        // shelf screw
        translate([0, extrusion_size/2 + bracket_thickness, screw_head_dia])
        rotate([-90,0,0])
        screw(100);

        // rack extrusion
        translate([0,0, extrusion_size/4])
            linear_extrude(extrusion_size, center=true)
                extrusion_profile(0,0, 0.3);

        // vertical leg extrusion
        translate([extrusion_size/2 + extrusion_groove_width/2,0, -extrusion_size*3/4])
        rotate([90,0,0])
        linear_extrude(5*extrusion_size, center=true)
            extrusion_profile(0,1, 0.3);
    }

    // rack extrusion
    %translate([0,0, extrusion_size/4])
    linear_extrude(extrusion_size, center=true)
        extrusion_profile(1,1);

    // vertical leg extrusion
    %translate([extrusion_size/2 + extrusion_groove_width/2,0, -extrusion_size*3/4])
    rotate([90,0,0])
    linear_extrude(5*extrusion_size, center=true)
        extrusion_profile(1,1);

}

rotate([-90,0,0])
    rack_clip(fingers);

if (dual)
{
    translate([extrusion_size + 2, 0,0])
    mirror()
    rotate([-90,0,0])
    rack_clip(fingers);
}
```


[User]
I'd like to create a modular maze system using OpenSCAD. Each piece will be a square with a unique 7x7 maze inside, and they'll connect to each other using interlocking circular tabs and slots. I want to be able to specify how many pieces wide and tall the final maze should be, along with the size of each individual piece and a small gap for printing tolerance.

Here's a breakdown of the parameters and features:

**Parameters:**

*   `piece_side_length`: The length of one side of a square maze piece.
*   `piece_height`: The overall height of a piece.
*   `xs`: The number of pieces in the x-direction (width).
*   `ys`: The number of pieces in the y-direction (height).
*   `spacing`: A small gap (e.g., 0.4mm) to prevent the pieces from being too tight when printed.

**Features:**

*   **Maze Generation:** Each piece will contain a randomly generated 7x7 maze. The maze should use a recursive backtracking algorithm to ensure there are no isolated sections.
*   **Interlocking Tabs and Slots:** The pieces will have half-circle cutouts and extruded "bulges" on their sides. These should allow pieces to connect side-by-side seamlessly. The slots should be on the left and top and the bulges on the right and bottom of each tile.
*   **Maze Walls:** The walls of the maze should have a thickness that scales with the piece size to look balanced, specifically `side_length / 20`.
*   **Maze Passages:** The maze passages should have a size that scales with the piece size, specifically `(maze_length - maze_wall_thickness) / 7` with `maze_length = side_length - circle_radius * 3` and `circle_radius = side_length / 10` (where `circle_radius` is the radius of the connector pieces)
*   **Roads to next piece:** Each maze should have entry and exit points on its boundary as well as "roads" to the middle of each side to connect each piece together. The road locations should scale with `block_width`, `circle_radius` and `maze_wall_thickness`.
*   **Composable Design:** The system should be fully composable so you can generate mazes of different sizes by combining pieces.
*   **Color:** I would like each puzzle piece to have a two color design. The base should be a solid color and the piece walls and maze should be a secondary color.

Could you generate the necessary OpenSCAD file(s) to create this system? I don't need any special libraries, just the core OpenSCAD functions. Thanks!

[Assistant]
composable_maze.scad:
```
piece_side_length = 25;
piece_height = 2;
xs = 3;
ys = 3;
spacing = 0.4;

/*
 * constants, for clearness
 *
 */

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

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

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

/*
 * modules for creating a maze
 *
 */

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

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

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

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

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

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

/*
 * utilities functions
 *
 */

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

// Create a puzzle piece.
//
// Parameters:
//     side_length - the length of the piece.
//     spacing - a small space between pieces to avoid overlaping while printing.
module puzzle_piece(side_length, spacing) {
	$fn = 48;

	circle_radius = side_length / 10;
	half_circle_radius = circle_radius / 2;
	side_length_div_4 = side_length / 4;
	bulge_circle_radius = circle_radius - spacing;

	difference() {
		square(side_length - spacing);

		// left
		translate([half_circle_radius, side_length_div_4, 0])
			circle(circle_radius);
		translate([half_circle_radius, side_length_div_4 * 3, 0])
			circle(circle_radius);

		// top
		translate([side_length_div_4, side_length - half_circle_radius, 0])
			circle(circle_radius);
		translate([side_length_div_4 * 3, side_length - half_circle_radius, 0])
			circle(circle_radius);
	}

	// right
	translate([side_length + half_circle_radius, side_length_div_4, 0])
		circle(bulge_circle_radius);
	translate([side_length + half_circle_radius, side_length_div_4 * 3, 0])
		circle(bulge_circle_radius);

	// bottom
	translate([side_length_div_4, -half_circle_radius, 0])
		circle(bulge_circle_radius);
	translate([side_length_div_4 * 3, -half_circle_radius, 0])
		circle(bulge_circle_radius);
}

// Create a puzzle piece with a 7x7 maze.
//
// Parameters:
//     side_length - the length of the piece.
module maze_for_puzzle(side_length) {
    circle_radius = side_length / 10;

	rows = 7;
	columns = 7;
	wall_thickness = side_length / 20;
	maze_length = side_length - circle_radius * 3;
	block_width = (maze_length - wall_thickness) / rows;

	entry = [1, 4];
	exit = [7, 4];

	// maze
	maze_vector = go_maze(entry[0], entry[1], rows, columns, replace([exit[0], exit[1], 0, UP_RIGHT_WALL()], [exit[0], exit[1], 0, UP_WALL()], init_maze(rows, columns)));

	difference() {
		maze(rows, columns, maze_vector, block_width, wall_thickness);
		translate([-wall_thickness / 2, wall_thickness / 2 + 3 * block_width, 0])
		    square([wall_thickness, block_width - wall_thickness]);
	}

	translate([0, wall_thickness, 0])
	    square(wall_thickness, center = true);
}

// a sub module for  maze_in_puzzle_piece
module roads_to_next_piece(side_length) {
	maze_rows = 7;
	circle_radius = side_length / 10;
	maze_wall_thickness = side_length / 20;
	maze_length = side_length - circle_radius * 3;
	block_width = (maze_length - maze_wall_thickness) / maze_rows;

	road_offset = circle_radius * 1.5 + block_width * 3 + maze_wall_thickness;

	translate([0, road_offset, 0])
	    square([circle_radius * 1.5, block_width - maze_wall_thickness]);

	translate([block_width * 9, road_offset, 0])
	    square([circle_radius * 1.5, block_width - maze_wall_thickness]);

	translate([road_offset, 0, 0])
	    square([block_width - maze_wall_thickness, circle_radius * 1.5 + maze_wall_thickness]);

	translate([road_offset, block_width * 7 + circle_radius * 1.5, 0])
	    square([block_width - maze_wall_thickness, circle_radius * 1.5 + maze_wall_thickness]);
}

// Create a piece of composable maze.
//
// Parameters:
//     side_length - the length of the piece.
//     piece_height - total height of the piece
//     spacing - a small space between pieces to avoid overlaping while printing.
module composable_maze_piece(side_length, piece_height, spacing) {
    circle_radius = side_length / 10;
    road_width = side_length / 20;

	maze_wall_thickness = side_length / 20;

	color("white") linear_extrude(piece_height) difference() {
		union() {
			difference() {
				puzzle_piece(side_length, spacing);
				translate([circle_radius * 1.5, circle_radius * 1.5, 0]) square(side_length - circle_radius * 3);
			}

			translate([maze_wall_thickness * 0.5 + circle_radius * 1.5, maze_wall_thickness * 0.5 + circle_radius * 1.5, 0])
				maze_for_puzzle(side_length);
		}

		roads_to_next_piece(side_length);
	}

	color("black") linear_extrude(piece_height / 2) puzzle_piece(side_length, spacing);
}

// Create a composable maze.
//
// Parameters:
//     xs - the amount of pieces in x direction.
//     ys - the amount of pieces in y direction.
//     piece_side_length - the length of a piece.
//     spacing - a small space between pieces to avoid overlaping while printing.
module composable_maze(xs, ys, piece_side_length, spacing) {
	for(x = [0 : xs - 1]) {
		for(y = [0 : ys - 1]) {
				translate([piece_side_length * x, piece_side_length * y, 0])
					composable_maze_piece(piece_side_length, piece_height, spacing);
			}
	}
}

composable_maze(xs, ys, piece_side_length, spacing);

```


[User]
Hey, I'm looking to create a parametric cable clip for perforated plates, something similar to what's out there but with a bit more flexibility. I have a plate with holes and want to be able to clip cables to it using these.

Basically, I need to be able to define:

*   **Hole distance:** The distance between the holes on the plate.
*   **Hole diameter:** The diameter of the holes.
*   **Plate thickness:** How thick the plate is.
*   **Clip height:** The overall height of the clip.
*   **Fitting multiplier:** A value to adjust how tightly the clips fit into the holes - a value of 1 is good as a starting point.
*   **Number of clips:**  I'd like to be able to generate either a single clip, a set of four in a 2x2 pattern, or a set of nine in a 3x3 pattern.

The clip should have two "push-pins" that fit into the holes on the plate and also a channel or area for the cable. I'd prefer that the push pins have some angled or tapered ends to ease insertion and also include a slight bridge along the bottom for extra strength.

Could you generate the OpenSCAD code for me?

[Assistant]
Parametric_Plate_Cable_Clip.scad:
```
//////////////////////////////////////////////
// Parametric Cable Clip for holed plates by Christoph Queck, chris@q3d.de, wwww.q3d.de
// April 2016
// Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
// http://creativecommons.org/licenses/by-sa/4.0/
/////////////////////////////////////////////

//Hole Distance in mm (I recommend skipping one hole)
Hole_Distance=16;

abstand = Hole_Distance;

//Hole Diameter in mm
Hole_Diameter=5;

loch=Hole_Diameter;

//Plate Thickness in mm
Thickness=2.2;

dicke=Thickness;

//Height in mm
Height=10;

hoehe=Height;

//Multiplier for fitting the Plugs
Fitting_multiplier=1;//[0:0.1:2]

fitting=(Fitting_multiplier/8)+0.9;
//Amount of clips
Amount=1;//[1, 4, 9]

///////////////////not yet implemented, stiffness multiplier
//Stiffness=1;

//stif=Stiffness;

if (Amount==1){
    clip();
    }

if (Amount==4){
    translate([(-abstand-loch*1.5-4)/2,(loch/1.5+2),0])clip();
    translate([-(-abstand-loch*1.5-4)/2,(loch/1.5+2),0])clip();
    translate([(-abstand-loch*1.5-4)/2,-(loch/1.5+2),0])clip();
    translate([-(-abstand-loch*1.5-4)/2,-(loch/1.5+2),0])clip();
    }

if (Amount==9){
    translate([0,(loch*1.2+4),0])clip();
    translate([0,0,0])clip();
    translate([0,-(loch*1.2+4),0])clip();

    translate([(-abstand-loch*1.5-4),(loch*1.2+4),0])clip();
    translate([(-abstand-loch*1.5-4),0,0])clip();
    translate([(-abstand-loch*1.5-4),-(loch*1.2+4),0])clip();

       translate([-(-abstand-loch*1.5-4),(loch*1.2+4),0])clip();
    translate([-(-abstand-loch*1.5-4),0,0])clip();
    translate([-(-abstand-loch*1.5-4),-(loch*1.2+4),0])clip();
    }

module clip(){
union(){
	difference(){
		union(){
			//body
			translate([0,0,hoehe/2])cube([abstand+2,loch*6/5,hoehe],center=true);
			//stiftedurch
			translate([-abstand/2,0,hoehe])cylinder(r=loch/2*0.95,h=dicke*2,center=true,$fn=32);
			translate([abstand/2,0,hoehe])cylinder(r=loch/2*0.95,h=dicke*2,center=true,$fn=32);
			//stuetze
			translate([-abstand/2,0,hoehe/2])cylinder(r=(loch/2+loch/3.7),h=hoehe,center=true,$fn=32);
			translate([abstand/2,0,hoehe/2])cylinder(r=(loch/2+loch/3.7),h=hoehe,center=true,$fn=32);
			//schraegeunten
			translate([-abstand/2,0,hoehe+dicke*0.5])cylinder(r1=loch/2-loch/5,r2=loch/5*3*fitting,h=dicke,center=true,$fn=32);
			translate([abstand/2,0,hoehe+dicke*0.5])cylinder(r1=loch/2-loch/5,r2=loch/5*3*fitting,h=dicke,center=true,$fn=32);
			//schraegeoben
			translate([-abstand/2,0,hoehe+(dicke+1)])cylinder(r1=loch/5*3*fitting,r2=loch/2-loch/5,h=2,center=true,$fn=32);
			translate([abstand/2,0,hoehe+(dicke+1)])cylinder(r1=loch/5*3*fitting,r2=loch/2-loch/5,h=2,center=true,$fn=32);

		}
		union(){
			//kabelausschnitt
			difference(){
				translate([0,0,hoehe])scale([1,1,hoehe/10+(1-abstand/33)])rotate([90,0,0])cylinder(r=abstand/3.3333333,h=loch*2,$fn=64,center=true);
				translate([-abstand/2,0,hoehe/2])cylinder(r=loch/2,h=hoehe+1,center=true,$fn=32);
				translate([abstand/2,0,hoehe/2])cylinder(r=loch/2,h=hoehe+1,center=true,$fn=32);
				translate([-abstand/2,-loch/2,hoehe+0.1])cube([abstand,loch,hoehe]);
			}
			//clip ausschnitt
			translate([-abstand/2,0,hoehe+dicke*5])cube([loch/3.7,loch*2,dicke*10],center=true);
			translate([abstand/2,0,hoehe+dicke*5])cube([loch/3.7,loch*2,dicke*10],center=true);
			//clip verlaengerung
			union(){
				intersection(){
					union(){
						translate([-abstand/2,0,hoehe-loch*1])cube([loch/3.7,loch*2,loch*10],center=true);
						translate([abstand/2,0,hoehe-loch*1])cube([loch/3.7,loch*2,loch*10],center=true);
					}
					union(){
						translate([-abstand/2,0,hoehe-loch/2])cylinder(r=loch/5*3,h=loch,center=true,$fn=32);
						translate([abstand/2,0,hoehe-loch/2])cylinder(r=loch/5*3,h=loch,center=true,$fn=32);
					}
				}
				difference(){
					union(){
						translate([-abstand/2,0,hoehe-loch/2])cylinder(r=loch/5*3,h=loch,center=true,$fn=32);
						translate([abstand/2,0,hoehe-loch/2])cylinder(r=loch/5*3,h=loch,center=true,$fn=32);
					}
					union(){
						translate([-abstand/2,0,hoehe-loch/2])cylinder(r=loch/2,h=loch,center=true,$fn=32);
						translate([abstand/2,0,hoehe-loch/2])cylinder(r=loch/2,h=loch,center=true,$fn=32);

					}
				}
			}
		}
	}
	//brueckeunten
	translate([0,0,1])cube([abstand+2,loch*6/5,2],center=true);
}
}
```