[User]
Hey, I'm looking to get a parametric OpenSCAD design for a doorknob, specifically one meant for a door lock mechanism with a square spindle. I've got some specific dimensions in mind but it'd be awesome if those could be adjustable parameters.

Here's what I need:

1.  **Axle Mount (Base):**
    *   This is a rectangular prism that will sit flush against the door. It needs to have a square hole that accepts the square spindle. The dimensions need to be customizable, with parameters like `baseWidth` for the width and depth of the square, and `baseHeight` for its length along the door surface.
    *   There should be a raised portion at the end of the axle mount that is hemispherical with a flat bottom to act as a mounting point for the rest of the doorknob, with a customizable `cutOff` parameter to make it a more of a dome than a full sphere.
    *   The total height of the mount (including the dome) should also be a customizable parameter.

2.  **Spacer:**
    *   This will fit over the axle mount and provide a gap between it and the doorknob itself.
    *   The shape needs to be a frustum of a cone, but with a curved profile - not just straight angled sides. Imagine a vase-like shape where the radius is smaller at the base (where it fits over the axle mount) and increases to the top. The curvature should be parametric as well. I'd like parameters for overall `spacerHeight` and a base radius `spacerRadius` and the curvature, perhaps controlled by a curve parameter.
    *   It also needs a through-hole for the axle mount to pass through.
    *   I would like clearance between the spacer and the base to be customizable with a `clearance` parameter.

3.  **Knob:**
    *   The knob will attach to the spacer and also receive the square spindle.
    *   The knob will consist of a cube base and a scale sphere on top of it.
    *   The sphere needs to have a customizable radius, `knobSphereRadius`, and be scaled in the Y and Z dimensions by parameters, `knobScaleY` and `knobScaleZ` respectively, resulting in more of an ellipsoid shape.
    *   The base cube, with parameter `knobBaseWidth` should be centered around the base of the scaled sphere.
    *   The knob should have a through hole, with clearance, for the axle mount to pass through.

4.  **Second Knob (Optional):**
    *   I'd also like the option to have a second knob that is similar to the main knob, but is rotated by 90 degrees around the z axis and displaced on the X axis.
    *   The optional second knob should be configurable (e.g. a boolean parameter to turn it on or off, `secondKnob`).

It would be amazing if all of this could be done using a single .scad file and with easy to understand parameters for all the dimensions. I'm thinking we'd need basic OpenSCAD functions and not any specialized libraries, but if there is something which would be useful, I would be interested in hearing it.

[Assistant]
Doorknob.scad:
```
$fn = 200;

spacerHeight = 6.5;
spacerRadius = 7.5;

knobBaseWidth = 15;
knobSphereRadius = 20;
knobScaleY = 0.75;
knobScaleZ = 0.5;

clearance = 0.5;
baseWidth = 8;
baseHeight = 34.5;
extraHeight = spacerHeight + 1/2 * knobBaseWidth + knobScaleZ * 1.5 * knobSphereRadius;
cutOff = 2.5;

module ax(){
    union(){
        translate([-1/2 * baseWidth, -1/2 * baseWidth, 0]){
            cube([baseWidth, baseWidth, baseHeight + extraHeight - 1/2 * baseWidth]);
        }
        translate([0, 0, baseHeight + extraHeight - baseWidth]){
           intersection(){
                translate([-1/2 * baseWidth, -1/2 * baseWidth, 0]){
                    cube(baseWidth);
                }
                translate([0,0,1/2 * baseWidth]){
                    sphere(r = baseWidth - cutOff);
                }
            }
        }
    }
}

module spacer(){
    layerHeight = 0.1;
    layers = floor(spacerHeight / layerHeight);

    a = -spacerRadius / (spacerHeight * spacerHeight);
    b = 0;
    c = spacerRadius;

    difference(){
        for(i = [1:layers]){
            rotate_extrude(){
                polygon(points  =   [   [a * (i - 1) * layerHeight * (i - 1) * layerHeight + b * (i - 1) * layerHeight + c, (i - 1) * layerHeight],
                                        [a * i * layerHeight * i * layerHeight + b * i * layerHeight + c, i * layerHeight],
                                        [0, i * layerHeight],
                                        [0, (i - 1) * layerHeight],
                ]);
            }
        }
        translate([-1/2 * baseWidth - clearance, -1/2 * baseWidth - clearance, -clearance]){
            cube([baseWidth + 2 * clearance, baseWidth + 2 * clearance, spacerHeight + 2 * clearance]);
        }
    }
}

module knob(){
    translate([0,0,1/2 * knobBaseWidth + knobScaleZ * knobSphereRadius]){
        rotate([0,180,0]){
            difference(){
                translate([-1/2 * knobBaseWidth, -1/2 * knobBaseWidth, 0]){
                    cube(knobBaseWidth);
                    translate([1/2 * knobBaseWidth, 1/2 * knobBaseWidth, 1/2 * knobBaseWidth + knobScaleZ * knobSphereRadius]){
                        scale([1, knobScaleY, knobScaleZ]){
                            sphere(r = knobSphereRadius);
                        }
                    }
                }
                translate([-1/2 * baseWidth - clearance, -1/2 * baseWidth - clearance, -clearance]){
                    cube([baseWidth + 2 * clearance, baseWidth + 2 * clearance, 1/2 * knobBaseWidth + knobScaleZ * 1.5 * knobSphereRadius]);
                }
                translate([-knobSphereRadius, -knobSphereRadius, 1/2 * knobBaseWidth + knobScaleZ * knobSphereRadius]){
                    cube(2 * knobSphereRadius);
                }
            }
        }
    }

    translate([45, 0, 0]){
        rotate([0,0,90]){
            difference(){
                scale([1, knobScaleY, knobScaleZ]){
                    sphere(r = knobSphereRadius);
                }
                translate([-knobSphereRadius, -knobSphereRadius, -2 * knobSphereRadius]){
                    cube(2 * knobSphereRadius);
                }
                translate([-1/2 * baseWidth - clearance, -1/2 * baseWidth - clearance, -clearance]){
                    cube([baseWidth + 2 * clearance, baseWidth + 2 * clearance, 0.25 * knobSphereRadius + 2 * clearance]);
                }
            }
        }
    }
}

ax();

translate([30, 0, 0]){
    spacer();
}

translate([0, 45, 0]){
    knob();
}
```


[User]
I'd like to design a bobbin holder, something that's a ring shape with grooves for bobbins to sit in. I have a basic concept already, which I'm including as a reference, but I'm hoping you can flesh it out into a more complete design.

Essentially, the holder is a torus shape where the cross-section is a U-shape to hold the bobbins. I'd like to have the design be parametric so I can easily change the bobbin diameter, wall thickness, and the overall radius of the ring. I’m planning to use this with 3d printer filament bobbins, so I'd like to use a round bottom for the groove. I'd also want to incorporate some mechanism to hold the bobbins in place so they don't easily fall out. Perhaps a small magnet pocket at the bottom of each groove? Or a sort of snap-fit ridge on the top? Let's explore both of those options if possible.

So, the key parameters should be:

*   `bobbin_diameter`: The diameter of the bobbins.
*   `wall_thickness`: The thickness of the material.
*   `holder_radius`: The radius of the ring to the center of the bobbin groove.
*   `bottom_type`: An option of `round` or `flat`, defaults to `round`.
*   `retention_type`: An option of `magnet` or `ridge` to decide what mechanism keeps the bobbins in place.

For the magnet option, I’d like to be able to also set:

*   `magnet_diameter`: The diameter of the magnets.
*   `magnet_depth`: The depth of the magnet pocket.

And for the ridge option, I’d like to have:

*   `ridge_height`: The height of the ridge.
*   `ridge_width`: The width of the ridge.
*  `ridge_gap`: The amount of space between the ridge and the groove edge.

I'm thinking we can start with the `round` bottom and then I could easily change to flat later if I want. Let’s make the default retention type be `magnet`. I imagine we'll need to define a module for the bobbin-groove so it's easy to modify based on the different retention types. And maybe also one for the magnet pocket so it’s easy to change?

I'm also going to need you to use the `BOSL2` library for this. Thanks!

[Assistant]
bobbin_holder.scad:
```
// in mm
bobbin_diameter = 22;

// in mm
wall_thickness = 3;

// flat or round?
bottom = 0; // [1:flat bottom, 0:round bottom]

// to the inner edge
holder_radius = 50;
// 	should hold about 30 10mm-high bobbins, since from
// 	2*π*r ≈ x*10
//    and r = 50 follows x≈30.
// 	(more accurately:
// 	2*π*r = 31.415*10  ⇔  r = 50
// 	I planned to fit ~30 bobbins anyway, and
// 	liked that π gets canceled out instead
// 	of having a real number for diameter.)

/* [Hidden] */

diameter = bobbin_diameter;
thickness = wall_thickness;
radius = diameter/2;
width = radius+thickness;
$fn=64;

module border()
	{
	translate([0, thickness]) square([thickness, thickness]);
	translate([thickness/2, 2*thickness]) circle(r=thickness/2);
	}

// create hollowed-out torus
rotate_extrude(convexity = 10)
	// move rotation-pattern to the right spot
	translate([holder_radius+radius, 0, 0])
	// create rotation-pattern
	difference()
		{
		union()
			{
			// inside border
			translate([-width, -thickness]){border();}
			// outside border
			translate([-width+diameter+thickness, -thickness]){border();}
			// flat bottom
			if(bottom) {translate([-width, -width]) square([2*width, width]);}
			// round bottom
			else
				{
				difference()
					{
					circle(r=width);
					translate([-width, 0]) square([2*width, width]);
					}
				}
			}
		// bobbin-groove
		circle(r=radius);
		}

```


[User]
I need an OpenSCAD design for some rings, specifically for workshop use. I want them to be easily adjustable in size and have a bit of a grippy texture. I'm thinking of something with a base ring shape and then some sort of tab or texture on the outer surface to make them easier to hold and turn.

Ideally, the design should be parametric so I can quickly change the overall diameter of the ring, the thickness, and the size of the textured area or grip. I'd like to keep it relatively simple but functional. I'm not concerned with having any fine detail on the inner diameter.

I don't have a specific type of texture in mind, but something like a series of small protrusions or a repeating pattern would be ideal. Maybe even a series of small ramps, something I can really grab on to. The width of the textured area should be a modifiable parameter. I think it'd be best if it extruded outwards from the circular base.

For the core, I'd like a simple circular profile - no need for any polygons, just a basic ring.

I would like the code to utilize the `BOSL2` library as I'm familiar with it.

[Assistant]
Ring.scad:
```
radius = 30;

projection(cut = true) ring();

module ring(){
linear_extrude( height = 5, center=false, convexity = 10, twist = 0, $fn = 10)
translate([-5,radius+2,0]){
scale([radius/60,radius/60,radius/60]){
polygon(points = [[-10,10],[-20,20],[-10,40],[30,40],[40,20],[30,10],[20,0],[0,0]]
,paths = [
[0,1,2,3,4,5,6,7]]
);
}
}

difference(){
cylinder(h = 5, r= radius +(radius/5), $fn =100,  center = false);
    translate([0,0,-10]){
cylinder(h = 40, r= radius, $fn= 100,  center = false);
    }
}
}

```


[User]
Hey there, I'm looking to design a customizable fly trap for my jars. I have a basic idea in mind, but I need help translating it into OpenSCAD.

Here's what I'm thinking:

The trap should consist of a lid or cap that fits over a jar. This cap needs to have a customizable inner diameter and wall height to fit different jars. I also need to control the thickness of the cap's ceiling and walls.

Inside the cap, I want to have the option of a central funnel or "trap." This center trap should have a configurable upper diameter, lower diameter, lower angle and height. It should be optional too so it's not always there.

In addition to the center trap, I want to have several surrounding funnels evenly spaced around the center (or around the center of the cap if there's no center trap). The number of these surrounding traps should be adjustable as should their diameter at the top, diameter at the bottom, angle, height, and rotation around the vertical axis.

So I'm looking for a main SCAD file that allows me to change all these parameters and generates the complete fly trap. Please don't include any libraries but I'm happy to use OpenSCAD primitives.

Thanks!

[Assistant]
Fly_away.scad:
```
/* [Cap] */
Wall_Thickness=0.4;//[0.2:0.1:2]
Cap_Ceiling_Thickness=0.6;//[0.4:0.1:2]
Cap_Inner_Diameter=80;//[30:150]
Cap_Wall_Height=15;//[5:30]
/* [Center Trap] */
Will_There_Be_Center_Trap="Yes";//[Yes,No]
Center_Trap_Upper_Hole_Diameter=40;//[15:55]
Center_Trap_Lower_Hole_Diameter=5;//[1:0.1:15]
Center_Trap_Lower_Hole_Angle=45;//[0:45]
Center_Trap_Height=50;//[5:150]
/* [Surrounding Traps] */
Number_Of_Surrounding_Traps=7;//[0:34]
Surrounding_Traps_Upper_Holes_Diameter=27;//[5:35]
Surrounding_Traps_Lower_Holes_Diameter=2;//[1:0.1:5]
Surrounding_Traps_Lower_Holes_Angle=0;//[0:45]
Surrounding_Traps_Lower_Holes_Orientation=0;//[0:359]
Surrounding_Traps_Height=30;//[5:150]
/* [Hidden] */
Keskjoon=(Will_There_Be_Center_Trap=="Yes")?(Cap_Inner_Diameter/2-Center_Trap_Upper_Hole_Diameter/2)/2+Center_Trap_Upper_Hole_Diameter/2:Cap_Inner_Diameter/4;
YmbritsevAuk=((Cap_Inner_Diameter/2-Keskjoon)<Surrounding_Traps_Upper_Holes_Diameter)?Cap_Inner_Diameter/2-Keskjoon:Surrounding_Traps_Upper_Holes_Diameter;
Maksimaalselt=floor(Keskjoon*2*3.14/YmbritsevAuk);
Ymbritsevaid=(Maksimaalselt<Number_Of_Surrounding_Traps)?Maksimaalselt:Number_Of_Surrounding_Traps;
difference(){
union(){
difference(){
kaas(Cap_Wall_Height,Cap_Inner_Diameter,Cap_Ceiling_Thickness);
if(Will_There_Be_Center_Trap=="Yes"){
cylinder(h=Cap_Ceiling_Thickness, d=Center_Trap_Upper_Hole_Diameter, $fn=100);}}
if(Will_There_Be_Center_Trap=="Yes"){
koonus(Center_Trap_Height,Center_Trap_Upper_Hole_Diameter,Center_Trap_Lower_Hole_Diameter,Center_Trap_Lower_Hole_Angle);}}
if(Number_Of_Surrounding_Traps!=0){
for ( i = [0 : Ymbritsevaid-1] ){
rotate( (i * 360 / Ymbritsevaid), [0, 0, 1])
translate([0, Keskjoon, 0])
cylinder(h=Cap_Ceiling_Thickness, d=YmbritsevAuk, $fn=100);}}}
if(Number_Of_Surrounding_Traps!=0){
for ( i = [0 : Ymbritsevaid-1] ){
rotate( (i * 360 / Ymbritsevaid), [0, 0, 1])
translate([0, Keskjoon, 0])
rotate(Surrounding_Traps_Lower_Holes_Orientation)
koonus(Surrounding_Traps_Height,YmbritsevAuk,Surrounding_Traps_Lower_Holes_Diameter,Surrounding_Traps_Lower_Holes_Angle);}}
module kaas(Korgus,Laius,Paksus){
difference(){
cylinder(h=Korgus, d=Laius+Wall_Thickness*2, $fn=100);
translate([0,0,Paksus])cylinder(h=Korgus, d=Laius, $fn=100);}}
module koonus(Korgus,Ylemine,Alumine,Nurk){
difference(){
difference(){
cylinder(h=Korgus, d1=Ylemine+Wall_Thickness*2, d2=Alumine+Wall_Thickness*2, $fn=100);
cylinder(h=Korgus, d1=Ylemine, d2=Alumine, $fn=100);}
translate([-Alumine*2,-Alumine/2-Cap_Ceiling_Thickness,Korgus])rotate([-Nurk,0,0])
cube([Alumine*4,Alumine*4,Alumine*2],center=false);}}
```


[User]
I'm looking to create a 3D printable mount for an E14 lightbulb socket. It needs to have a base that can be screwed onto a wall, and then a holder that extends out and angles upwards to hold the bulb. It should be designed for easy customization via parameters.

Specifically, I'd like:

*   **Socket Holder:** The socket holder should be a cylindrical shape (or close to it) that will tightly fit around the base of the E14 socket. This cylinder should be angled upwards from the base, maybe around 30 degrees or so from horizontal. The diameter of this cylinder needs to be adjustable to accommodate different E14 socket sizes, and its height should be another parameter. There should also be some sort of rim on the cylinder so the socket doesn't slide through.

*   **Base:** The base will be mounted to a wall, so it should be flat and have mounting holes. I'm thinking a rectangular base with rounded corners would be good. The dimensions of this rectangle should be adjustable, as well as the radius of the rounded corners. A slot needs to be cut out of it to allow for the lightbulb power cable to pass through. I'd like the cable slot to be adjustable, too, in terms of both depth and width.

*   **Overall Construction:** The socket holder needs to be solidly connected to the base. It shouldn't just be a separate piece. The connection needs to be angled, as mentioned before, so the bulb will point slightly upwards when mounted on a wall.

*   **Parameters:** I’d like to be able to customize the following:
    *   `socket_width`: The diameter of the cylindrical holder for the E14 socket.
    *   `holder_height`: The height of the cylindrical holder.
    *   `base_width`: The width of the rectangular base.
    *   `base_height`: The height of the rectangular base.
    *   `base_depth`: The thickness of the rectangular base.
    *   `corner_radius`: The radius of the rounded corners of the base.
    *   `cable_slot_width`: The width of the cable slot cut into the base.
    *   `cable_slot_depth`: The depth of the cable slot cut into the base.
    *   `holder_angle`: The angle of the socket holder relative to the base.

*   **Libraries:** I would prefer it to avoid using any external libraries unless absolutely necessary - if you *do* need to use one, use `BOSL` only.

I think that's everything. Let me know if you have any questions.

[Assistant]
e14halterung.scad:
```
//in mm; consider shaving off a couple mm for a tight fit
socket_width=25;

/* [Hidden] */

$fn=128;
$fassung=socket_width;
$fas_halt=$fassung+3;
$halt_height=30;
module halterung() // centered on 0, open toward x
	{
	rotate([0,0,-45]) translate([0,0,-15])
		cylinder(h=$halt_height,d=$fas_halt);
	}

//rotate(z=45) translate(z=-10) halterung();

$width = 50;
$depth = 3;
$height = 50; // must be >= $width
$einkerbung = 20;
$rundecke = 10;

module sockel()
	{
	difference()
		{
		union()
			{
			translate([-$depth*3/2,-$width/2,0]) cube([$depth*3,$width,$height-$width/2]);
			translate([-$depth*1.5,0,$height-$width/2]) rotate([0,90,0]) cylinder(h=$depth*3,d=$width);
			translate([$depth/2,$width/2-$rundecke/2,0]) rotate([0,90,0]) cylinder(h=$depth,d=$rundecke);
			translate([$depth/2,-($width/2-$rundecke/2),0]) rotate([0,90,0]) cylinder(h=$depth,d=$rundecke);
			}
		translate([-$depth/2,-($width/2 + 5),-10]) cube([3,$width+10,$einkerbung]);
		hull()
			{
			translate([0,$width/2-$rundecke*1.5,$rundecke/2]) rotate([0,90,0]) cylinder(h=$depth*2,d=$rundecke);
			translate([0,-($width/2-$rundecke*1.5),$rundecke/2]) rotate([0,90,0]) cylinder(h=$depth*2,d=$rundecke);
			translate([0,-($width-$rundecke*2)/2,-$rundecke*2]) cube([$depth*2,$width-$rundecke*2,$rundecke]);
			}
		}
	}

$deg = 30;
//$ausgleich_x = ($fas_halt/2) / cos($deg);
//$ausgleich_z = ($fas_halt/2) / cos(90-$deg);
$ausgleich = sin($deg) * $halt_height;

//translate([($ausgleich_x)-($depth*1.5),0,50+$ausgleich_z/2])
//translate([$ausgleich,0,0])

module remme()
	{
	rotate([0,0,-45]) translate([0,0,-15])
		{
		translate([0,0,-5]) cylinder(h=$halt_height+10,d=$fassung);
		translate([0,0,-5]) cube([$fassung,$fassung,$halt_height+10]);
		}
	}

difference()
	{
	union()
		{
		sockel();
		translate([-$depth*1.5,0,$height])
			rotate([0,-$deg,0])
			translate([$fas_halt/2,0,-$halt_height/2]) halterung();
		}
	translate([-$depth*1.5,0,$height])
		rotate([0,-$deg,0])
		translate([$fas_halt/2,0,-$halt_height/2]) remme();
	}

```


[User]
Hi, I'm looking to create a customizable landing skid for a drone using OpenSCAD. I want the skid to attach to the drone arms using the motor mounting screws. I've seen a design that I like, but I need to make some changes and have some more options, and I'd rather have it generated from scratch.

The basic skid shape should be a cylinder with a spherical bottom to give it a nice rounded landing surface. I need to be able to control:

*   The diameter of the cylindrical part (which should match the motor diameter)
*   The overall height of the skid
*   The radius of the sphere used for the bottom curve
*   The spacing for the motor mounting holes (two values, one for horizontal and one for vertical when using a four-hole mount)
*   The size of the mounting holes for either M2 or M3 screws (including clearance)
*   The thickness of the base - this will affect the required length of the motor screws
*   Whether the top is "rounded" with screw head insets or a "cross" pattern with square cutouts (for lighter weight).
*   Whether to have 2 or 4 mounting holes.

I need to be able to select values from lists, too. For example, the screw size should only be M2 or M3. The base thickness should be 1mm, 2mm, 3mm, 4mm, 5mm or 6mm. And the mounting hole pattern should be 2 or 4 holes. And the shape should only be rounded or cross.

I'd also like it to be oriented correctly for printing with the flat part up and the rounded part down.

I am not using any external libraries, so I'd prefer the code to be self-contained, without the need for MCAD, BOSL, or other libraries.

Can you help me generate this parametric OpenSCAD file?

[Assistant]
Customizable-Landing-Skid.scad:
```
// Diameter of skid (same as motor works well)
diameter        = 23;

// Height of skid, wanna stand tall?
height          = 10;

// Diameter of the sphere used for curved bottom of skid
curvature       = 25;

// First motor mounting hole spacing (used for two-hole and four-hole mounting)
spacing1        = 12;

// Second motor mounting hole spacing (used for four-hole mounting)
spacing2        = 12;

// Motor mounting screw size, adjusted for clearance
holesize        = 2; // [2:M2, 3:M3]

// Thickness of base (increases motor screw lengths)
thickness       = 4; // [1:1MM, 2:2MM, 3:3MM, 4:4MM, 5:5MM, 6:6MM]

// Rounded is heavier and stonger and cross is lighter
style           = 1; // [1:Rounded, 2:Cross]

// Number of mounting holes
count           = 4; // [2:Two, 4:Four]

holesize_r      = holesize/2;
curvature_r     = curvature/2;
diameter_r      = diameter/2;

// Rotate it for correct printing orientation.
rotate([180, 0, 0]) {
    difference() {
        // Skid body
        intersection() {
            translate([0, 0, curvature_r]) sphere(r=curvature_r);
            cylinder(r=diameter_r, h=height);
        }

        // Mounting holes
        // Screw shafts
        translate([spacing1/2, 0, 0]) cylinder(r=holesize_r*1.3, h=height, $fn=20);
        translate([0-spacing1/2, 0, 0]) cylinder(r=holesize_r*1.3, h=height, $fn=20);
        if (count==4) {
            translate([0, spacing2/2, 0]) cylinder(r=holesize_r*1.3, h=height, $fn=20);
            translate([0, 0-spacing2/2, 0]) cylinder(r=holesize_r*1.3, h=height, $fn=20);
        }

        if (style==1) {
            // Style: Rounded
            // Screw head insets
            translate([spacing1/2, 0, 0]) cylinder(r=holesize_r+1.7, h=height-thickness, $fn=20);
            translate([0-spacing1/2, 0, 0]) cylinder(r=holesize_r+1.7, h=height-thickness, $fn=20);
            if (count==4) {
                translate([0, spacing2/2, 0]) cylinder(r=holesize_r+1.7, h=height-thickness, $fn=20);
                translate([0, 0-spacing2/2, 0]) cylinder(r=holesize_r+1.7, h=height-thickness, $fn=20);
            }
        } else {
            // Style: Cross
            // Square cutouts
            rotate([0, 0, 45]) translate([1.5, 1.5, 0-thickness]) cube([diameter_r, diameter_r, height]);
            rotate([0, 0, -45]) translate([1.5, 1.5, 0-thickness]) cube([diameter_r, diameter_r, height]);
            rotate([0, 0, 135]) translate([1.5, 1.5, 0-thickness]) cube([diameter_r, diameter_r, height]);
            rotate([0, 0, 225]) translate([1.5, 1.5, 0-thickness]) cube([diameter_r, diameter_r, height]);
        }
    }
}

```


[User]
I'm looking to create a parametric door stopper, and I need some help with the OpenSCAD code. The basic idea is that I want a wedge-shaped block with a flat top, which will sit on the floor and stop the door. Think of a long, angled block with a flat, rectangular block attached to the side of it. I want to also include a text cutout on the side of the main wedge shape.

Here are the specific features and parameters I have in mind:

*   **Overall Shape:** A wedge (essentially a truncated triangular prism) with a flat rectangular block extending from its side.
*   **Parameters:** I'd like to be able to control:
    *   `breit`: The overall width of the design (parallel to the face the text sits on).
    *   `lang`: The length of the wedge, measured from the front point to the back edge
    *   `hoch`: The height of the overall wedge and block.
*   **Wedge Shape:** The wedge will rise from 0 to `hoch` over the length of `lang`, and will have a rectangular base that stretches the full `breit` dimension.
*   **Block:** The block is a simple rectangular prism with the same height as the overall shape and a length equal to one-eighth of the overall `lang`. It's positioned on the flat face of the wedge at the beginning of `lang`. The flat rectangular block will be flush with the left side of the wedge, as you're looking at it from the side with the text.
*   **Text Cutout:** I want a cutout of the text "Stopp!" on the larger, flat side of the wedge. The text should be roughly in the center of the side and sized appropriately for the face. This will be a linear_extrude cutout.
*   **Font:** Please use the "arial" font.
*   **Library:** I do not expect you to provide libraries, but I don't want to use any libraries in this design.

Could you please provide an OpenSCAD file that implements this design with the parametric capabilities I described above? I'd like to be able to change `breit`, `lang`, and `hoch` and have the design update appropriately.

[Assistant]
tuerstopperCust.scad:
```
// Breite
breit=40;
// Länge
lang=120;
// Höhe
hoch=25;

module klotz(breite,laenge,hoehe){
translate([0,laenge/8,0]){
    polyhedron
(points=[
         [breite,0,0],[0,0,0],[0,laenge,0],[breite,laenge,0],           [breite,0,hoehe],[0,0,hoehe]
         ],
  faces=[
         [3,2,1,0],[0,1,5,4],[0,4,3],[1,2,5],[2,3,4,5]
         ]);}
cube([breite,laenge/8,hoehe]);}

         *klotz(100,160,80);

*translate([70,57.5,5]){
    rotate([0,0,90]){
resize(newsize=[125,60,80]){
linear_extrude(10)
    text("Stopp!",font="arial");}}}

module tuerstopper(breite,laenge,hoehe){
difference(){
        klotz(breite,laenge,hoehe);
        #translate([breite*0.72,laenge*0.175,5])
            rotate([0,0,90])
                resize(newsize=[laenge*0.75,breite*0.75,hoehe])
                    linear_extrude(10)
                        text("Stopp!",font="arial");
    }
}

tuerstopper(breit,lang,hoch);
```


[User]
Hey, I'm looking to generate some L-brackets for a woodworking project and I want to be able to adjust all the dimensions and screw hole configurations easily. I've seen some examples that are close to what I want, but I want to make sure I can control everything.

Specifically, I need a parametric OpenSCAD design for an L-bracket where I can specify:

*   **Overall Dimensions:**
    *   Length of the first leg.
    *   Width of the second leg.
    *   Overall Height of the bracket (this is the Z dimension that both legs share).
    *   Thickness of the first leg (along the X-axis).
    *   Thickness of the second leg (along the Y-axis).
    *   The diameter of the weld at the corner of the bracket, where the two legs meet.
*   **Corners:**
    *   A boolean to toggle rounded corners on or off - if rounded, the outside corner should have a radius of half the height.
*   **Multiple Parts:**
    *   A way to specify the number of copies to generate; each one should be placed sequentially along the Y-axis.
*  **Hole Details:**
    *   A selection to pick from a pre-set list of common screw sizes. For example, #6, #8, #10 screws, or 3mm, 4mm, 5mm, and 6mm screws.
    *   The type of hole: none, tapered, or countersunk.
    *   A tolerance value added to the hole diameter.
*   **Hole Offsets:**
    *   The distance of the first hole from the end of the first leg (X-axis).
    *   The distance of the second hole from the first hole along the X-axis.
    *   The distance of the first hole from the end of the second leg (Y-axis).
    *   The distance of the second hole from the first hole along the Y-axis.
*   **Number of Holes:**
    *   Number of screws along the first leg, either 1 or 2.
    *   Number of screws along the second leg, either 1 or 2.
    *   Number of screws along the *height* of the first leg, either 1 or 2 (these screws should be at the same X position as the other screws on that leg, but at different heights).
    *   Number of screws along the *height* of the second leg, either 1 or 2 (these screws should be at the same Y position as the other screws on that leg, but at different heights).
*   **Screw Height:**
    *   The overall height of the screws I am planning on using.

I think that covers it.  I'd like to see the screw holes visualized with a screw head as well, so I can quickly confirm that the design works. It would be great if you could generate the OpenSCAD code for all of this! I don't have any specific library dependencies beyond what's included in standard OpenSCAD, but I'm open to suggestions if there are libraries that would make this easier.

[Assistant]
LBracket_Parametric_rev9.scad:
```
//Parametric L Bracket
//You can make this any length, Width, Height & Thickness you want
//You can also have 1, 2 or 4 screws on each leg of the L
//8/19/2015 By: David Bunch
//
//Revised 8/20/2015 to make rounded ends instead of chamfers
//                  and more flexibility on screws
//CUSTOMIZER VARIABLES

/* [Basic Dimensions] */

//1. Length of Part along 1st L
Len = 35;           //[25:1:75]

//2. Width of L along 2nd L
Wid = 35;           //[25:1:75]

//3. Height of L Bracket
Ht = 20;            //[20:1:75]

//4. Thickness of Leg along X-Axis
Thk_X = 8;          //[2:.5:12]

//5. Thickness of Leg along Y-axis
Thk_Y = 8;          //[2:.5:12]

//6. Weld Diameter at L junction
WeldDia = 6;        //[2:.5:12]

//7. Round Corners (0 = No, 1 = Yes)
RndON = 1;          //[0:No, 1:Yes]

//8. # of parts to make (1,2,3 or 4)
Parts = 1;                      //[1:1:4]

/* [Hole Sizes] */

//9. Hole Diameter for Screws (#8 screw default)
HoleSize = 1;                //[0:#6, 1:#8, 2:#10, 3:3mm, 4:4mm, 5:5mm, 6:6mm]
                            //#10 Screws are 4.5 measured
                            //#8 Screws are 4.2 measured
                            //#6 Screws are 3.4 measured

//10. Taper or Countersink Hole
Tap_CnkSnk = 1;             //[0:None, 1:Tapered, 2:Counter Sink]

//11. Drill Hole Tolerance
Tolerance = .1;           //[0:.05:.8]

/* [Hole Offsets] */
//12. 1st Hole Offset distance from end of X-Axis
HoleOffset_X1 = 10;         //[6:.5:30]

//13. 2nd Hole Offset distance from 1st Hole of X-Axis
HoleOffset_X2 = 10;         //[6:.5:30]

//14. 1st Hole Offset distance from end of Y-Axis
HoleOffset_Y1 = 10;         //[6:.5:30]

//15. 2nd Hole Offset distance from 1st Hole of Y-Axis
HoleOffset_Y2 = 10;         //[6:.5:30]

/* [Number of Holes] */
//16. # of Screws on each side of L (1 or 2)
Screws_X = 1;                 //[1:One Screw, 2:Two Screws]

//17. # of Screws on each side of L (1 or 2)
Screws_Y = 1;                 //[1:One Screw, 2:Two Screws]

//18. # of Screws along Height of L on X-Axis (1 or 2)
Screws_ZX = 1;                 //[1:One Screw, 2:Two Screws]

//19. # of Screws along Height of L on Y-Axis (1 or 2)
Screws_ZY = 1;                 //[1:One Screw, 2:Two Screws]

//20. Screw Height (I use 3/4" screws for default)
ScrewHt = 19.0;                //[9.5:.5:38]

//CUSTOMIZER VARIABLES END

//HoleSize = 4.2;             //[#6:3.4, #8:4.2, #10:4.5, 3mm:3, 4mm:4, 5mm:5, 6mm:6]
//                            //#10 Screws are 4.5 measured
//                            //#8 Screws are 4.2 measured
//                            //#6 Screws are 3.4 measured
//
////10. Taper or Countersink Hole
//Tap_CnkSnk = 1;             //[0:None, 1:Tapered, 2:Counter Sink]
//
////11. Dia. of Taper Head of Screw (#8 used for default)
//TaperDia = 7.9;             //[6.45:#6, 7.95:#8, 9.0:#10, 6:3mm, 4mm:8, 5mm:10, 6mm:12]
A_Hole_OD = [3.4,4.2,4.5,3,4,5,6];
A_Head_OD = [6.45,7.95,9,6,8,10,12];
A_TaperLen =  [2.66,3.5,3.9,3,4.2,5.5,6.5];

HoleOD = A_Hole_OD[HoleSize] + Tolerance;      //Calculated Hole Diameter
TapOD = A_Head_OD[HoleSize] + Tolerance;       //Calculated Tapered Head Diameter
TaperLen = A_TaperLen[HoleSize];
WeldRad = WeldDia / 2;              //Radius of Weld

//Calcs for Hole(s) along X axis
Ht2ZX = Ht / (Screws_ZX + 1);       //Half Height or 1/3 height if 2 screws are used
echo("Ht2ZX = ", Ht2ZX);
H_X = (Len - Thk_Y - WeldRad) / (Screws_X + 1);
echo("H_X = ",H_X);
//Hole_X =  H_X + Thk_Y + WeldRad;
Hole_X1 =  Len - HoleOffset_X1;
Hole_X2 =  Hole_X1 - HoleOffset_X2;
echo("Hole_X1 = ",Hole_X1);
//Hole_X2 = Hole_X1 + H_X;
echo("Hole_X2 = ",Hole_X2);
//
//Calcs for Hole(s) along Y axis
Ht2ZY = Ht / (Screws_ZY + 1);       //Half Height or 1/3 height if 2 screws are used
echo("Ht2ZY = ", Ht2ZY);
H_Y = (Wid - Thk_X - WeldRad) / (Screws_Y + 1);
echo("H_Y = ",H_Y);
//Hole_Y = H_Y + Thk_X + WeldRad;
Hole_Y1 =  Wid - HoleOffset_Y1;
Hole_Y2 =  Hole_Y1 - HoleOffset_Y2;
echo("Hole_Y = ",Hole_Y1);
//Hole_Y2 = Hole_Y + H_Y;
echo("Hole_Y2 = ",Hole_Y2);
//
ScrewThreadHt = ScrewHt - TaperLen;
Ht2x = Ht * 2;
Ht_Half = Ht / 2;
Ires = round(((Ht * 3.14) / 4) / .8) * 4;
Hole_Res = round(((TapOD * 3.14) / 4) / 1) * 4;
echo(Hole_Res = Hole_Res);
module DrawSrewCut()
{
//This combines the head to the screw
    if (Tap_CnkSnk == 0)
    {
        cylinder(d=HoleOD,h=ScrewThreadHt,$fn=Hole_Res);

    } else if (Tap_CnkSnk == 1)
    {
        union()
        {
            cylinder(d1=TapOD,d2=HoleOD,h=TaperLen,$fn=Hole_Res);
            cylinder(d=HoleOD,h=ScrewThreadHt,$fn=Hole_Res);
        }
    } else if (Tap_CnkSnk == 2)
    {
        union()
        {
            cylinder(d=TapOD,h=TaperLen,$fn=Hole_Res);
            cylinder(d=HoleOD,h=ScrewThreadHt,$fn=Hole_Res);
        }
    }
}
module LBracket()
{
    union()
    {
        cube([Len,Thk_X,Ht]);         //Draw the X axis side
        cube([Thk_Y,Wid,Ht]);         //Draw the Y axis side
        translate([Thk_Y,Thk_X,0])
        cylinder(d=WeldDia,h=Ht,$fn=4);     //Add the Weld
    }
}
module RndCorner_XY()
{
    difference()
    {
        cylinder(d=Ht2x,h=Thk_X+Thk_Y,$fn=Ires);
        translate([0,0,-1])
        cylinder(d=Ht,h=Thk_X+Thk_Y+2,$fn=Ires);
        translate([-(Ht2x+2),-(Ht+1),-1])
        cube([Ht2x+2,Ht2x+2,Thk_X+Thk_Y+2]);
    }
}
module Screws_X()
{
//Drill holes for Screws along the X axis
    translate([Hole_X1,Thk_X+.02,Ht2ZX])
    rotate([90,0,0])
    DrawSrewCut();
    if (Screws_X == 2)
    {
        translate([Hole_X2,Thk_X+.02,Ht2ZX])
        rotate([90,0,0])
        DrawSrewCut();
    }
}
module Screws_Y()
{
//Drill holes for Screws along the Y axis
    translate([Thk_Y+.02,Hole_Y1,Ht2ZY])
    rotate([0,-90,0])
    DrawSrewCut();
    if (Screws_Y == 2)
    {
        translate([Thk_Y+.02,Hole_Y2,Ht2ZY])
        rotate([0,-90,0])
        DrawSrewCut();
    }
}
module DrawL()
{
    rotate([90,0,0])
    difference()
    {
        LBracket();
        Screws_X();
        if (Screws_ZX == 2)
        {
            translate([0,0,Ht2ZX])
            Screws_X();
        }
        Screws_Y();
        if (Screws_ZY == 2)
        {
            translate([0,0,Ht2ZY])
            Screws_Y();
        }
        if (RndON == 1)
        {
//Round the X-Axis Corner
            translate([Len-Ht_Half,-1,Ht_Half])
            rotate([-90,0,0])
            RndCorner_XY();
//Round the Y-Axis Corner
            translate([-1,Wid-Ht_Half,Ht_Half])
            rotate([90,0,90])
            RndCorner_XY();
        }
//The following section is only for visual checks of how far screws go into wood
//These will not draw on final render
        translate([0,-12.7,0])
        %cube([Hole_X1,12.7,38.1]);          //Check how far screw goes into 1/2" wood
        translate([-19.02,0,0])
        %cube([19.02,Hole_Y1,38.1]);         //Check how far screw goes into 3/4" wood
        if (Tap_CnkSnk != 0)
        {
            translate([Hole_X1,Thk_X + 2 + TaperLen,Ht2ZX])
            rotate([90,0,0])
            color("red")
            %DrawSrewCut();
            translate([Thk_Y+2+TaperLen,Hole_Y1,Ht2ZY])
            rotate([0,-90,0])
            color("red")
            %DrawSrewCut();
        }
    }
}
//Draw how ever many parts user wants along the Y-Axis
for ( i = [1 : Parts] )
{
    translate([0,(Ht+6) * i,0])
    DrawL();
}

```


[User]
Hey, I'm trying to design a parametric adapter for a spool holder and I could really use some help with the OpenSCAD code. Basically, I want to create a disc with a central hole that fits onto my spool holder and a larger outer disc with a pattern of cutouts around the perimeter for aesthetic reasons. I need to be able to easily change the inner diameter, and the general size of the whole thing should be adjustable as well.

Here are the specifics:

*   **Inner Diameter:** This is the critical part; it needs to be parametric. Let's call it `spool_hole_diameter`. I need to be able to adjust this with a slider between 20mm and 60mm.
*   **Outer Diameter:** This should also be adjustable. Let's call it `outer_diameter`. I'd like a slider to modify this as well; something between 60mm and 100mm would probably be sufficient.
*   **Thickness:** The whole adapter should be 26mm thick. I'd like the main disc portion to be 16mm thick, and the insert to be 10mm thick.
*   **Central Hole:** This hole will go all the way through both the 16mm and 10mm sections.
*  **Outer Cutouts:** For the cutouts around the outer edge I was thinking something like that pizza shape from my code - where you use intersection to cut a circle with a square at 0 deg, and one at 45 deg. We can rotate them around the circle. The width of the cutout would need to be parametric as well. It'd be cool to have a `cutout_width` variable. Maybe have a `cutout_spacing` variable to space the cutouts? I'd probably want the `cutout_width` to be a slider between 10 and 40, and the `cutout_spacing` to be a slider between 20 and 60.

I was hoping to use the `MCAD` library for any standardized shapes or operations, but I'm fine using something else if it makes sense.

Thanks for the help!

[Assistant]
adaptor_script.scad:
```
//Adapter für Spulen-Abroller
//Parametrisch!

$fn=100*1;
//Spool hole diameter
numerical_slider = 27;//[20:60]

//Pizza is very tasty
module pizza(r=3.0,a=30) {
  $fn=64;
  intersection() {
    circle(r=r);
    square(r);
    rotate(a-90) square(r);
  }
};

difference(){
    linear_extrude(height=26){
        difference(){
            circle(r=40);
            for(i=[30:120:270]){
                rotate(i)translate([70,0])circle(r=40);
            };
            for(i=[70:120:450]){
                difference(){
                    rotate(i)pizza(30.1,40.2);
                    rotate(i)pizza(19.9,40.2);
                };
            };
        };
    };
    translate([0,0,16])difference(){
        cylinder(r=40,10);
        cylinder(d=numerical_slider,10);
    };
    cylinder(r=8,26);
    cylinder(r1=20,r2=13,5);
};

```


[User]
I'm looking to create a parametric spring design in OpenSCAD, and I've been having some trouble getting exactly what I want. I'd like it to be a sort of leaf spring, but instead of the typical curved leaves, I want the leaves to be straight, creating a zig-zag pattern when viewed from the side.

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

*   **`length`**: The overall length of the spring.
*   **`base`**: The width/depth of the rectangular base plates at the top and bottom of the spring.
*   **`baseHeight`**: The height of those base plates.
*   **`thickness`**: The thickness of the spring material itself. This is a flat piece of material, not a wire.
*  **`amount`**: The number of leaves in the spring.
*   **`radius`**: The radius of a circular hole that goes through the center of the spring, including the base plates. I'd like to be able to disable this hole if needed, but it should default to a radius bigger than 0.

The spring should be created by subtracting from a cube with a specified `base` dimension and a height of `length`. The leaves should be created by subtracting extruded polygons. Each leave should be angled slightly up then down. I want the spring to be symmetric. It should look like the provided code, which generates a spring from these parameters:

```
//  Amount of edges of the hole through the spring
$fn = 6;

//  Radius of the hole through the spring
radius = 3.4;

//  Dimension of the spring
base = 10.2;

//  Height of the base plates of the spring
baseHeight = 1;

//  Thickness of the spring
thickness = 0.3;

//  Length of the spring
length = 50;

//  Amount of leaves in the spring
amount = 33;

module spring(){
    leaveHeight = (length - 2 * baseHeight) / amount;
    ty = thickness / (2 * cos(atan(leaveHeight / base)));
    tx = thickness / (sin(atan(leaveHeight / base)));
    tolerance = 0.001;

    difference(){
        translate([-1/2 * base, 0, -1/2 * base]){
            cube([base, length, base]);
        }
        rotate([-90, -30, 0]){
            translate([0, 0, -0.1]){
                cylinder(r = radius, h = length + 0.2);
            }
        }
        translate([0, baseHeight, 0]){
            for(i = [1:amount]){
                rotate([0, i * 180, 0]){
                    translate([0, (i - 1) * leaveHeight, -(1/2 * base + 0.1)]){
                        linear_extrude(height =  base + 0.2){
                            polygon(    points  =   [   [-1/2 * base - tolerance, -tolerance],
                                                        [1/2 * base - tx, 0],
                                                        [-1/2 * base - tolerance, leaveHeight - ty]  ],
                                        paths   =   [[0,1,2]]   );
                            polygon(    points  =   [   [1/2 * base + tolerance, -tolerance],
                                                        [1/2 * base + tolerance, leaveHeight],
                                                        [-1/2 * base + tx, leaveHeight]  ],
                                        paths   =   [[0,1,2]]   );
                        }
                    }
                }
            }
        }
    }
}

spring();
```
I'm not using any external libraries, so you shouldn't worry about that. I really appreciate the help!

[Assistant]
spring_v2.0.scad:
```
//  Amount of edges of the hole through the spring
$fn = 6;

//  Radius of the hole through the spring
radius = 3.4;

//  Dimension of the spring
base = 10.2;

//  Height of the base plates of the spring
baseHeight = 1;

//  Thickness of the spring
thickness = 0.3;

//  Length of the spring
length = 50;

//  Amount of leaves in the spring
amount = 33;

module spring(){
    leaveHeight = (length - 2 * baseHeight) / amount;
    ty = thickness / (2 * cos(atan(leaveHeight / base)));
    tx = thickness / (sin(atan(leaveHeight / base)));
    tolerance = 0.001;

    difference(){
        translate([-1/2 * base, 0, -1/2 * base]){
            cube([base, length, base]);
        }
        rotate([-90, -30, 0]){
            translate([0, 0, -0.1]){
                cylinder(r = radius, h = length + 0.2);
            }
        }
        translate([0, baseHeight, 0]){
            for(i = [1:amount]){
                rotate([0, i * 180, 0]){
                    translate([0, (i - 1) * leaveHeight, -(1/2 * base + 0.1)]){
                        linear_extrude(height =  base + 0.2){
                            polygon(    points  =   [   [-1/2 * base - tolerance, -tolerance],
                                                        [1/2 * base - tx, 0],
                                                        [-1/2 * base - tolerance, leaveHeight - ty]  ],
                                        paths   =   [[0,1,2]]   );
                            polygon(    points  =   [   [1/2 * base + tolerance, -tolerance],
                                                        [1/2 * base + tolerance, leaveHeight],
                                                        [-1/2 * base + tx, leaveHeight]  ],
                                        paths   =   [[0,1,2]]   );
                        }
                    }
                }
            }
        }
    }
}

spring();
```
spring.scad:
```
//  The length of the spring
length = 19;

//  Dimension of the frontal square form of the spring
radiusSpring = 5.1;

//  Radius of the (optional) hole through the spring
radiusHole = 6.8 / 2;

//  Amount of leaves in the spring
cuts = 16;  //   [2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,39,40,42,44,46,48,50]

//  Depth of the leaves
cutDepth = 8;

module spring(){
    difference(){
        translate([-radiusSpring, 0, -radiusSpring]){
            cube([2 * radiusSpring, length, 2 * radiusSpring]);
        }
        rotate([-90,30,0]){
            translate([0,0,-0.1]){
                cylinder(r = radiusHole, h = length + 0.2, $fn = 6);
            }
        }
        translate([-radiusSpring, 0, -radiusSpring]){
            triangleCut();
        }
    }
}

module triangleCut(){
    length2 = length * cuts / (cuts + 0.5);
    for(i = [1:cuts]){
        if(i%2 == 0){
            translate([0,0,-0.1]){
                linear_extrude(height = 2 * radiusSpring + 0.2){
                    polygon(points  =   [   [-0.1, length2 / cuts * (i - 1.5)],
                                            [cutDepth, length2 / cuts * (i - 1.5)],
                                            [-0.1, length2 / cuts * (i - 0.5)],
                                        ],
                            paths = [[0,1,2]]);
                }
            }
        }
        else{
            translate([0,0,-0.1]){
                linear_extrude(height = 2 * radiusSpring + 0.2){
                    polygon(points  =   [   [2 * radiusSpring + 0.1, length2 / cuts * (i + 1)],
                                                [-cutDepth +2 * radiusSpring, length2 / cuts * (i + 1)],
                                                [2 * radiusSpring + 0.1, length2 / cuts * (i)],
                                            ],
                                paths = [[0,1,2]]);
                }
            }
        }
    }
}

spring();
//triangleCut();
```


[User]
I'd like to design a customizable spring using OpenSCAD. I need to be able to adjust the spring's length, outer diameter, wire diameter, the number of windings, and the smoothness of the coil. It should be a helix, not a spiral, so it should have a consistent pitch, not a gradually increasing or decreasing one. I'd also like to be able to add end treatments – either a plain end, a ring, or a full, flat end, possibly with a hole in it. The hole should also be customizable in terms of diameter and polygon shape (e.g. triangle, square, hexagon, circle). It would also be nice to have an optional "printing helper" feature that adds a flat support along the spring's length to reduce drooping of the model while printing, and small supports every turn of the coil.

Specifically, I'd like these parameters:

*   `Spring_Length`: Total length of the spring.
*   `Spring_Outer_Diameter`: Outer diameter of the spring coil.
*   `Spring_Wire_Diameter`: Diameter of the wire the spring is made from.
*   `Spring_Windings`: Number of active coils in the spring.
*   `Spring_Coarseness`: Number of facets used to generate the coil (affects smoothness).
*   `Printing_Helper`: Boolean flag for including printing supports.
*   `Proofread_Spring_Diameter`: Boolean flag for an alternate method of creating the spring for proofreading.
*   `Spring_Left_End`: Type of left end (0: None, 1: Ring, 2: Full, 3: Full with hole).
*    `Left_Hole_Diameter`: Diameter of the hole on the left end.
*    `Left_Hole_Type`: Number of sides on the hole polygon for the left end (3: Triangle, 4: Square, 6: Hexagon, 100: Circle)
*   `Spring_Right_End`: Type of right end (0: None, 1: Ring, 2: Full, 3: Full with hole).
*    `Right_Hole_Diameter`: Diameter of the hole on the right end.
*    `Right_Hole_Type`: Number of sides on the hole polygon for the right end (3: Triangle, 4: Square, 6: Hexagon, 100: Circle)

I think I'll need to use OpenSCAD's `rotate_extrude` and `linear_extrude` operations for creating the coil. Also, `difference()` and `union()` for adding the end treatments and holes. I guess it will have to use  `circle()` and `polygon()` as primitives. I don't need any external libraries for this. It would be helpful if you could provide the complete OpenSCAD code, including comments, so it’s easier to understand.

[Assistant]
spring.scad:
```
/* [Spring] */
Spring_Length=100;//[10:200]
Spring_Outer_Diameter=50;//[5:0.1:150]
Spring_Wire_Diameter=5;//[1:0.1:10]
Spring_Windings=7;//[3:20]
Spring_Coarseness=80;//[4,6,8,10,40,80,160]
//For better printing
Printing_Helper="No";//[Yes,No]
//Beware!!! Takes some time!!!
Proofread_Spring_Diameter="No";//[Yes,No]
/* [Spring Left End] */
Spring_Left_End=0;//[0:None,1:Ring,2:Full,3:Full with hole]
Left_Hole_Diameter=8;//[1:0.1:140]
Left_Hole_Type=6;//[3:Triangle,4:Square,6:Hexagon,100:Circle]
/* [Spring Right End] */
Spring_Right_End=0;//[0:None,1:Ring,2:Full,3:Full with hole]
Right_Hole_Diameter=8;//[1:0.1:140]
Right_Hole_Type=6;//[3:Triangle,4:Square,6:Hexagon,100:Circle]
/* [Hidden] */
traat_d=Spring_Wire_Diameter;
vedru_r=Spring_Outer_Diameter/2-traat_d/2;
vedru_p=Spring_Length-traat_d;
keerde=Spring_Windings;
samm=vedru_p/keerde/2;
kraadid=asin((samm/2)/(vedru_r));
union(){
ots(Spring_Left_End,Left_Hole_Diameter,Left_Hole_Type);
if(Proofread_Spring_Diameter=="Yes"){
resize([0,0,vedru_r*2+traat_d],auto=[false,false,true])
translate([samm/2,0,0])
for(x=[0:2:(keerde-1)*2]){
translate([samm*x,0,0])poolik(kraadid,1);
translate([samm*(x+1),0,0])poolik(kraadid,-1);}
}else{
translate([samm/2,0,-(samm*kraadid)/221.61])
for(x=[0:2:(keerde-1)*2]){
translate([samm*x,0,0])poolik(kraadid,1);
translate([samm*(x+1),0,0])poolik(kraadid,-1);}}
translate([vedru_p,0,0])ots(Spring_Right_End,Right_Hole_Diameter,Right_Hole_Type);
if(Printing_Helper=="Yes"){
translate([0,-0.5,-vedru_r-traat_d/2])cube([Spring_Length-traat_d,1,0.6]);
for(x=[0:Spring_Windings-1]){
translate([samm+x*samm*2-samm/2,-10,-vedru_r-traat_d/2])cube([samm,20,0.6]);}}}
module poolik(kraadid,suund){
rotate([0,suund*kraadid,0])
difference(){rongas();
translate([0,suund*vedru_r,0])cube([traat_d,vedru_r*2,vedru_r*2+traat_d],center=true);}}
module rongas(){
rotate([0,90,0])
rotate_extrude(convexity = 10,$fn=Spring_Coarseness)
translate([vedru_r, 0, 0])circle(d = traat_d, $fn=30);}
module ots(tyyp,auk=3,kylgi=8){
if(tyyp==1){rongas();}else{if(tyyp>=2){
difference(){
union(){rongas();rotate([0,90,0])cylinder(h=traat_d,r=vedru_r,center=true,$fn=Spring_Coarseness);}
if(tyyp==3)rotate([0,90,0])cylinder(h=traat_d+2,d=auk,center=true,$fn=kylgi);}}}}
```


[User]
Okay, I've got a project I need some help with. I'm trying to adapt an existing OpenSCAD design for a 4-wheel carriage that runs on aluminum extrusion. The original design used Prime Line wheels with a built-in nut, but I've found those too wobbly. I want to switch to using proper wheels with bearings, but need a modified design to accommodate them.

The original design is in the attached `KM_4_wheel_roller.scad` file, which you can see above. It's parameterized for wheel diameter, screw sizes, and other dimensions. I need to keep the core carriage design, with the four wheels mounted on either side and the tension adjustment mechanism. The current file also includes mounting holes for a Traxxas carriage; I'd like to keep those as well.

Here are the specific changes and requirements for the new design:

1.  **Wheel Mounts:** The key change is the wheel mounting system. Instead of the current hex-nut-shaped cutout for the Prime Line wheels, I need mounts that can accommodate wheels with a central bearing. I'm thinking of using standard skateboard bearings, which have an inner diameter of 8mm, an outer diameter of 22mm, and a width of 7mm. The wheel itself can vary, but I'm planning to use wheels that are approximately 25mm in diameter and 10mm wide.
2.  **Bearing Fit:** The bearing should fit snugly within the mount. I would like a small clearance of about 0.1mm on the outer diameter of the bearing to allow for a press-fit. The 8mm bore should have a little extra clearance to allow the axle to rotate freely, perhaps around 0.2mm. The final fit should also have a little lip on the bearing to prevent it from sliding out of the carrier. The axle hole should go all the way through the wheel carrier block to enable the use of long enough screws.
3.  **Wheel Attachment:** Instead of relying on the wheel's integrated nut, I'll need a way to secure the wheel and bearing onto the axle. I'm thinking of using a bolt and a washer to hold the wheel in place. The bolt hole in the wheel mount should be designed for an M4 screw. The screw head should also sit nicely into the carrier.
4.  **Maintain Parametricity:** The new design should maintain the same parametric approach as the original. I need to be able to easily adjust the carriage height (`carriage_height`), carriage thickness (`carriage_depth`), carriage gap (`carriage_gap`), and round corner radius (`round_corners_r`).  The main thing that needs to be updated is the wheel mounting mechanism based on the parameters above.
5. **Clearance for Wheels** I'd like to keep the same approximate offset for the wheels relative to the carriage as in the existing design. This means the outside face of the wheel should be about 2mm from the outside face of the carrier.
6. **Tension Adjusters:** The tension adjusters in the current design are pretty good; I'd like to keep them.
7. **Traxxas Mounts:** Keep the Traxxas mounting holes in the same position relative to the center of the carriage.
8.  **No external dependencies**: Please don't use any external libraries like BOSL, MCAD, or others. This is important because I want to keep it as simple as possible.

In summary, I need you to create a new OpenSCAD file (or files if you think it makes sense to split it up) that keeps the same overall carriage design but replaces the existing wheel mounts with new mounts designed for skateboard-style bearings and M4 bolts. It needs to be fully parametric and not rely on external libraries.

[Assistant]
KM_4_wheel_roller.scad:
```
/* [Global] */
// Diameter of wheel that will run across the aluminum extrusion. Values should be 19mm or higher.  Use 19.05mm for 3/4" wheels, and 22.23mm for 7/8" wheels. (mm)
wheel_diameter = 19.05;
// Radius of screw for wheels (mm)
wheel_screw_r = 2.1;
// Radius of screwhead for wheels (mm)
wheel_screw_head_r = 4.2;
// Additional clearance on screw holes required by your printer (mm)
extruder_adj = 0.2;
// Vertical length of the carriage (default 54mm, but can be increased)
carriage_height = 54; // [54:100]
// Thickness of the carriage (values other than 12mm not tested)
carriage_depth = 12; // [12:12]
// Gap between the carriage and extrusion.
carriage_gap = 0;
// Round the corners of the wheel mount by this amount (mm)
round_corners_r = 3;

/* [Hidden] */
// Work-in-progress parameters
// Width of aluminum. Only partially implemented.
extrusion_width = 15;
// Width of wheel
wheel_width = 6.35;
// Offset built into wheel (i.e. nut width in the case of Prime Line products);
wheel_offset = 3.3;
// Prime Line wheels (with the hex nut at the end) or generic?
prime_line = "true"; // [true:Prime Line, false:Generic]

// These should not generally be adjusted
carriage_width = 10.5 + wheel_diameter + extrusion_width;
m3_screw_r = 1.5;
m3_nut_r = 5.5/2;

wheel_nut_size = (7/16) * 25.4 + extruder_adj;
wheel_nut_h = sqrt(3) * wheel_nut_size/2;
m3_nut_r1 = m3_nut_r + extruder_adj*2;
m3_nut_h1 = sqrt(3) * m3_nut_r1 / 2;
joint_length = carriage_height/2 - 5 - 6;
adjuster_step = 12;

$fa = 10;
$fs = extruder_adj*2;

difference() {
    union() {
        translate([round_corners_r, round_corners_r, 0]) minkowski()
        {
            cube(size=[carriage_width-round_corners_r*2, carriage_height-round_corners_r*2, carriage_depth-1]);
            cylinder(r=round_corners_r, h=1);
        }

        // Mounting cutout for wheels
        for (x = [-1, 1], y = [-1, 1]) {
            translate([carriage_width/2 + x*(carriage_width/2-1-wheel_nut_h/2),carriage_height/2 + y*(carriage_height/2-3.5-wheel_nut_size/2),0])
                if (prime_line == "true") {
                    rotate([0, 0, 90+90*y])
                        wheelHolder();
                } else {

                }
        }
    }

    // Mounting holes for...
    for (x = [-1, 1], y = [-1, 1]) {
        // wheels
        #translate([carriage_width/2 + x*(carriage_width/2-1-wheel_nut_h/2),carriage_height/2 + y*(carriage_height/2-3.5-wheel_nut_size/2),-1]) {
            cylinder(r=wheel_screw_r+extruder_adj, h=20);
            cylinder(r1=(wheel_screw_head_r-wheel_screw_r)/3*4+wheel_screw_r+extruder_adj, r2=wheel_screw_r+extruder_adj, h=4);
        }
        // traxxas_carriage
        translate([carriage_width/2 + x*10, carriage_height/2 + y*7.5, -1])
            #union() {
                cylinder(r=m3_screw_r, h=20);
                translate([0,0,carriage_depth - 6+1]) cylinder(r1=m3_nut_r, r2=m3_nut_r+extruder_adj*2, h=7, $fn=6);
            }
    }

    // Tension adjuster
    for (y = [-1, 1]) {
        translate([carriage_width+1, carriage_height/2+y*(carriage_height/2-3.5), carriage_depth/2])
        rotate([0, -90, 0])
            union() {
                // Screw hole
                cylinder(r1=(m3_screw_r+extruder_adj)*1.1, r2=m3_screw_r, h=35);
                //#cylinder(r=(m3_screw_r+extruder_adj)*1.1, h=13);
                cylinder(r=3.1, h=6);

                // nut trap
                rotate(90-90*y, 0, 0) translate([-m3_nut_h1, 0, 20])
                    cube([(m3_nut_h1)*2, 4, 3.5]);
                translate([0, 0, 20]) rotate([0,0,90]) cylinder(r=(m3_nut_r1), h=3.5, $fn=6);

                // joint
                translate([0, 0.5*y, 13.5]) cube([carriage_depth+1, 6.1, 3], center=true);
                rotate([90, 0, 180+y*90]) translate([2.5,9.5,0]) linear_extrude(height = 20, center=true, convexity=5)
                for (a = [0:adjuster_step:180-adjuster_step]) {
                    polygon([
                        [(a)/180*joint_length,3*(1-a/180)+cos(a)*2.5],
                        [(a)/180*joint_length,0+cos(a)*2.5],
                        [(a+adjuster_step)/180*joint_length,0+cos(a+adjuster_step)*2.5],
                        [(a+adjuster_step)/180*joint_length,3*(1-(a+adjuster_step)/180)+cos(a+adjuster_step)*2.5]]);
                }
            }
    }
}

module wheelHolder() {
    translate([-wheel_nut_h/2,-wheel_nut_size/2,0])
    difference() {
        translate([wheel_nut_h/2, wheel_nut_size/2, 12]) union() {
            rotate([0,0,90]) cylinder(r=wheel_nut_size/2, h=4, $fn=6);
            translate([-wheel_nut_h/2, -wheel_nut_size/2-2, 0]) cube([wheel_nut_h, wheel_nut_size/2+2, 4]);
        }
        translate([wheel_nut_h/2, wheel_nut_size/2, 14])
            rotate([0,0,90]) cylinder(r=wheel_nut_size/2*1.01, h=4, $fn=6);
    }
}
```


[User]
Hey, I'm looking to design a customizable hook for laundry baskets, and I need some help generating the OpenSCAD code.

Essentially, I want a hook that has a base that mounts to a wall (with an optional screw hole) and a curved arm that extends out and then hooks upward. It needs to be parametric so I can adjust things like the base thickness, the arm lengths, and the curve radii. I've got a few specific dimensions and features in mind to give you a good idea of what I'm going for, but the goal is that these can be adjusted by the end user.

**Base:**

*   There should be a base that mounts flat to the wall.
*   I'd like an option to include a countersunk screw hole, with the position offset from the center of the base.
*   The base should have a specified thickness and a rounded edge where it meets the wall. I'd like control over how round the edge is, with a separate value for how the rounding should blend with the flat surface.

**Arm:**

*   The arm should start from a point on the base and curve outwards and then upwards. It'll look kinda like a rounded "J".
*   The arm should have a "shoulder" that's rounded where it connects to the base, a rounded "elbow" where it bends upwards, and a rounded "fist" at the end of the hook.
*   I need to be able to set the length of the upper arm portion (from shoulder to elbow), the length of the forearm (from elbow to the fist), and the radii of the various rounded parts.
*  There should be offset parameters for the shoulder, elbow and fist that move the center of those spheres along the x axis.

**Other:**

*   I need a quality parameter to control the smoothness of the curves.

For the screw hole, I need to specify the shaft radius, head radius, and head depth separately.

I'm thinking of using the `hull()` function to blend the shapes of the arm. I don't think I need any libraries for this project, just the standard functions in OpenSCAD.

Let me know what you think. I'm excited to see the code.

[Assistant]
BasketHook03.01.scad:
```

build_base();

/*[Global]*/
quality = 10;   //[10:10:120]

/*[Base]*/
screw_hole = 1;      //[1:yes,0:no]
base_screw_hole_offset = 8;
base_thickness = 8;
base_top_radius = 7;
base_smoothing = 4;

/*[Arm]*/
shoulder_radius = 10;
shoulder_offset = -10;
upper_arm_length = 35;
elbow_radius = 5;
elbow_offset = 0;
//Set to 0 if you don't want the end hook
fore_arm_length = 7;
fist_radius = 3;
//Set equal to Elbow Offset if you don't want the end hook
fist_offset = 5;

/*[Screw]*/
screw_shaft_radius = 1.7;
screw_head_radius = 3.5;
screw_head_depth = 3;

/* [Hidden] */

base_z = base_thickness - base_smoothing;
arm_len = upper_arm_length + base_thickness;
knob2_z = fore_arm_length + base_thickness + upper_arm_length;

module serial_hull()
  {
    // let i be the index of each of our children, but the last one
    for(i=[0:$children-2])
      hull() // we then create a hull between child i and i+1
      {
        children(i); // use child() in older versions of Openscad!
        children(i+1); // this shape is i in the next iteration!
      }
  }

module arm(){
    serial_hull(){
        translate([shoulder_offset,0,0]) scale([1,2,1]) cylinder(r=shoulder_radius,h=0.01,$fn=quality);
        translate([elbow_offset,0,arm_len]) scale([1,1.5,1]) sphere(r=elbow_radius,$fn=quality);
        translate([fist_offset,0,knob2_z]) scale([1,1,1]) sphere(r=fist_radius,$fn=quality);
    }

}

module base(){
    hull(){
        difference(){
            arm();
            translate([0,0,50+base_z + base_smoothing]) cube(size=100,center=true);
        }
        difference(){
            minkowski(){
                    translate([base_screw_hole_offset,0,0]) scale([1,1,1]) cylinder(r = base_top_radius, h=base_z,$fn=quality);
                sphere(r=base_smoothing,$fn=quality/2);
            }
            translate([0,0,-50]) cube(size=100,center=true);
        }
    }
}

module build_base(){
    arm();
    difference(){
        base();
        if(screw_hole==1){
            translate([base_screw_hole_offset,0,0]) cylinder(r=screw_shaft_radius,h = arm_len,$fn=30,center=true);
            translate([base_screw_hole_offset,0,base_z+base_smoothing-screw_head_depth]) cylinder(r=screw_head_radius,h=arm_len,$fn=30,center=false);
        }
    }
}

```


[User]
Hey there, I'm looking to get a custom Raspberry Pi case designed for the B+ model, and I'd like it to be parametrically defined so I can tweak it easily. I've seen some existing designs, but they aren't quite what I need.

Here's what I'm after:

**General Case Design**

*   It should be a two-part case (top and bottom) that snaps together. I'd also like the option to include countersunk screws for extra security - perhaps with a breakaway structure in the bottom part to easily expose the screw holes after printing.
*   The overall design should be based on the official mechanical drawing for the Raspberry Pi B+ model. I believe the dimensions are on the raspberrypi.org site.
*   I'd like to define a general wall thickness, corner radius, and a tolerance that's applied throughout the design. I need this to be easy to adjust with variables.
*   The origin of the design should be the center of the PCB board.

**Key Features**

*   **PCB Mounts:** The case should have standoffs for the PCB, with optional breakaway supports for the mounting screws.
*   **SD Card:** I need the option to include an internal support for the micro SD card.
*   **Camera Module:** The case should also optionally have an opening for the camera module.
*   **LEDs:** The design should include the ability to expose the status LEDs.
*   **IO Pins:** I need the option to have a cut-out that exposes the GPIO pins, with an option to have it fully open.
*   **External Ports:** Cutouts for all of the Raspberry Pi's external connectors are required: USB, ethernet, HDMI, power, and audio. I need each to have its own variable so that size can be tweaked in the future if required.

**Parametric Variables**
Here's a list of parameters that I'd like to be able to customize:

*   `pcb`: \[width, length, height] of the PCB
*   `pcb2floor`: Distance from the bottom of the case to the bottom of the PCB.
*  `pcb2roof`: Distance from the bottom of the case to the top of the case (the top of the case covers the top of the components on the PCB).
*   `pcbmntdia`: Diameter of the PCB mounting holes.
*   `pcbmnthead`: Diameter of the countersunk screw heads
*   `pcbmntthreads`: Diameter of screw threads.
*   `cardsy`, `cardsz`, `cardsx`: Dimensions of the SD card support.
*   `carddy`: Position of the SD card relative to the center of the board.
*   `ethersy`, `ethersz`, `etherdy`: Dimensions and position of the ethernet port.
*   `usbsy`, `usbsz`, `usb1dy`, `usb2dy`, `usbframe`: Dimensions and position of the USB ports.
*   `powerpsx`, `powerpsz`, `powerssx`, `powerssz`, `powerdz`, `powerdx`: Dimensions and position of the power connector.
*   `hdmisx`, `hdmisz`, `hdmipsx`, `hdmipsz`, `hdmidx`: Dimensions and position of the HDMI port.
*   `audior`, `audiodz`, `audiodx`: Dimensions and position of the audio connector.
*   `leddx`, `led1dy`, `led2dy`, `leddia`: Dimensions and position of the LEDs.
*   `plugrow1`: Position of the GPIO pins.
*   `cam_box`: Size of the camera opening.
*   `frame_w`: Width of the lip for the frame
*   `snap_dia`, `snap_len`: Dimensions of the snap lock mechanism.
*   `tol`: Overall tolerance.
*   `wall`: General wall thickness
*  `thinwall`: Thickness for any thin walls needed.
*   `corner_r`, `corner2_r`: Radius for the corners of the case.
*   `d`: small number for making objects overlap.
*   `extra_y`: extra space in y direction.
*   `breakaway`: Thickness for breakaway supports, set to 0 for no extra supports.
*  `have_plugrow`: Variable for inclusion of GPIO pins [ 1:true, 0:false ]
*  `have_open_plugrow`: Variable to have GPIO fully open  [ 1:true, 0:false ]
*  `have_camera`: Variable to include camera opening [ 1:true, 0:false ]
*   `have_sdcard_support`: Variable to include SD card support [ 1:true, 0:false ]
*  `have_leds`: Variable to include led openings [ 1:true, 0:false ]

It should be easy to enable and disable the optional features (SD card, camera, LEDs, external pin access) using boolean variables.

I'm okay with the design being in multiple SCAD files (e.g., one for the bottom, one for the top, and maybe a shared file for common modules). I need this to be easy to modify and adjust. Please use comments to describe your code.

I'm not using any external libraries, so please don't include any in your response.

[Assistant]
raspberry_pi_bplus.scad:
```
//
// raspberry pi model B+
//
// design by Egil Kvaleberg, 8 Aug 2015
//
// drawing of the B+ model, for referrence:
// https://www.raspberrypi.org/documentation/hardware/raspberrypi/mechanical/Raspberry-Pi-B-Plus-V1.2-Mechanical-Drawing.pdf
//
// notes:
// design origin is middle of PCB
//

part = "bottom"; // [ top, bottom, all, demo ]

have_plugrow = 0; // [ 1:true, 0:false ]
have_open_plugrow = 0; // [ 1:true, 0:false ]
have_camera = 0; // [ 1:true, 0:false ]
have_sdcard_support = 1; // [ 1:true, 0:false ]
have_leds = 1; // [ 1:true, 0:false ]

/* [Hidden] */
mil2mm = 0.0254;

pcb = [85.0, 56.0, 1.5]; // main board
pcb2floor = 4.0; // 3.5
pcb2roof = 17.0; // 15.7

pcbmntdia = 2.75; // mounting holes
pcbmnt1dx = pcb[0]/2 - 3.5;  //
pcbmnt1dy = 3.5 - pcb[1]/2;
pcbmnt2dx = pcb[0]/2 - 3.5 - 58.0; //
pcbmnt2dy = pcb[1]/2 - 3.5;
pcbmnthead = 6.2; // countersunk
pcbmntthreads = 2.2;
breakaway = 0.3; // have hidden hole for screw, 0 for no extra pegs

cardsy = 12.0; // card measures 11.0
cardsz = 3.1;
cardsx = 8.0; // size of internal platform
carddy = pcb[1]/2 - 28.0;
ethersy = 16.0; // ethernet contact width
ethersz = 13.5 + 0.5;
etherdy = pcb[1]/2 - 10.25;
usbsy = 13.5; // core
usbframe = 1.0; // frame
usbsz = 15.8 + 0.5;
usb1dy = pcb[1]/2 - 29.0;
usb2dy = pcb[1]/2 - 47.0;
powerpsx = 11.0; // power plug width
powerpsz = 4.5; // plug height
powerssx = 8.0; // power socket width
powerssz = 3.3; // socket height
powerdz = -1.7; // for plug
powerdx = pcb[0]/2 - 10.6; //
hdmisx = 15.2; // hdmi contact width
hdmisz = 6.2;
hdmipsx = 25.0; // typical plug
hdmipsz = 12.0;
hdmidx = pcb[0]/2 - 32.0;
audior = 7.0; // audio contact radius
audiodz = 6.0/2; // above pcb
audiodx = pcb[0]/2 -53.5;
leddx = pcb[0]/2 - 1.3;
led1dy = 8.9 - 2.4/2 - pcb[1]/2;
led2dy = 12.9 - 2.4/2 - pcb[1]/2;
leddia = 2.0;
// BUG: fine tune, maybe add slot out of box
plugrow1 = [pcb[0]/2 - 29.0 - mil2mm*100*11, 3.5 - pcb[1]/2, 0]; // coordinates D7 pin, mid

cam_box = 34.5;

frame_w = 2.5; // width of lip for frame
snap_dia = 1.8; // snap lock ridge diameter
snap_len = 50.0; // snap lock length
tol = 0.5; // general tolerance

wall = 1.2; // general wall thickness
thinwall = 0.4;
corner_r = wall; // casing corner radius
corner2_r = wall+tol+wall; // corners of top casing
d = 0.01;

extra_y = 0; // extra space in y

module nut(af, h) { // af is 2*r
	cylinder(r=af/2/cos(30), h=h, $fn=6);
}

module c_cube(x, y, z) {
	translate([-x/2, -y/2, 0]) cube([x, y, z]);
}

module cr_cube(x, y, z, r) {
	hull() {
		for (dx=[-1,1]) for (dy=[-1,1]) translate([dx*(x/2-r), dy*(y/2-r), 0]) cylinder(r=r, h=z, $fn=20);
	}
}

module cr2_cube(x, y, z, r1, r2) {
	hull() {
		for (dx=[-1,1]) for (dy=[-1,1]) translate([dx*(x/2-r1), dy*(y/2-r1), 0]) cylinder(r1=r1, r2=r2, h=z, $fn=20);
	}
}

module bottom() {
	module snap2(ex, both) {
		if (both) translate([pcb[0]/2+tol+wall+ex, -snap_len/2, wall+pcb2floor+pcb[2]-frame_w/2]) rotate([-90, 0, 0]) cylinder(r=snap_dia/2, h=snap_len, $fs=0.3);
		if (both) translate([-snap_len/2, pcb[1]/2+tol+wall, wall+pcb2floor+pcb[2]-frame_w/2]) rotate([0, 90, 0]) cylinder(r=snap_dia/2, h=snap_len, $fs=0.3);
	}
    module plugs(extra) {
        z0 = wall+pcb2floor+pcb[2];
        // card slot
        translate([pcb[0]/2 - cardsx/2, carddy, wall+pcb2floor+pcb[2]-cardsz-extra])
			c_cube(cardsx + 19.9, cardsy+2*extra, cardsz+2*extra);
        // power plug (near side)
        translate([powerdx, pcb[1]/2+2.1*wall, z0+powerdz-extra])
			c_cube(powerpsx+2*extra, 2*wall, powerpsz+2*extra+frame_w);
        // hdmi socket (near side)
        translate([hdmidx, pcb[1]/2+19.9/2-8.25/2, -extra-frame_w])
			c_cube(hdmipsx+2*extra, 8.25, hdmipsz+2*extra+frame_w);
    }
    module plugs_add() {
        z0 = wall+pcb2floor+pcb[2];
        // audio plug (near side)
        difference() /*/ color("green")*/ {
            translate([audiodx, pcb[1]/2 + 1.4*wall, z0-snap_dia/2-tol])
                c_cube(audior, 1.6*wall, audiodz+snap_dia);
            translate([audiodx, pcb[1]/2 + wall/2 - d, z0+audiodz])
                rotate([-90, 0, 0]) cylinder(r=audior/2+tol, h=1.8*wall+2*d, $fn=20);
        }
        // card slot
        if (have_sdcard_support) difference () {
            translate([pcb[0]/2 + tol + d - cardsx/2, carddy, 0])
                c_cube(cardsx, cardsy+2*tol+2*wall, wall+frame_w-tol);
            plugs(tol);
        }
    }

	module add() {
		hull () for (x = [-1, 1]) for (y = [-1, 1])
			translate([x*(pcb[0]/2+tol+wall-corner_r) + (x>0 ? extra_y : 0), y*(pcb[1]/2+tol+wall-corner_r), corner_r]) {
				sphere(r = corner_r, $fs=0.3);
				cylinder(r = corner_r, h = wall+pcb2floor+pcb[2]-corner_r, $fs=0.3);
		}
		snap2(0, true);
        rotate([0, 0, 180]) snap2(0, false);
	}
	module sub() {
        module pedestal(dx, dy, hg, dia) {
            translate([dx, dy, wall]) {
				cylinder(r = dia/2+wall, h = hg, $fs=0.2);
                // pegs through pcb mount holes
                if (breakaway > 0) translate([0, 0, hg])
                        cylinder(r = dia/2 - tol, h = pcb[2]+d, $fs=0.2);
            }
        }
        module pedestal_hole(dx, dy, hg, dia) {
            translate([dx, dy, breakaway]) {
				cylinder(r = dia/2, h = wall+hg-2*breakaway, $fs=0.2);
				cylinder(r = 1.0/2, h = wall+hg+pcb[2]+d, $fs=0.2); // needed to 'expose' internal structure so it dows not get removed
				cylinder(r1 = pcbmnthead/2 - breakaway, r2 = 0, h = pcbmnthead/2 - breakaway, $fs=0.2); // countersunk head
		    }
        }
		difference () {
			// pcb itself
			translate([-(pcb[0]/2+tol), -(pcb[1]/2+tol), wall])
				cube([2*tol+pcb[0], 2*tol+pcb[1], pcb2floor+pcb[2]+d]);
			// less pcb mount pedestals
            for (dx = [pcbmnt1dx,pcbmnt2dx]) for (dy = [pcbmnt1dy,pcbmnt2dy])
                pedestal(dx, dy, pcb2floor, pcbmntdia);
		}
		// hole for countersunk pcb mounting screws, hidden (can be broken away)
        for (dx = [pcbmnt1dx,pcbmnt2dx]) for (dy = [pcbmnt1dy,pcbmnt2dy])
            pedestal_hole(dx, dy, pcb2floor, pcbmntdia);
        plugs(tol);
	}
	difference () {
		add();
		sub();
	}
    plugs_add();

    //color("red") plugs(0);
}

// Z base is top of pcb
module top() {
	module snap2(ex, both) {
		if (both) translate([pcb[0]/2+tol+wall+ex, -snap_len/2-tol, -frame_w/2]) rotate([-90, 0, 0]) cylinder(r=snap_dia/2, h=snap_len+2*tol, $fs=0.3);
		translate([-snap_len/2-tol, pcb[1]/2+tol+wall, -frame_w/2]) rotate([0, 90, 0]) cylinder(r=snap_dia/2, h=snap_len+2*tol, $fs=0.3);
	}
    module plugs(extra) {
        module usb_plug(dy) {
            translate([-pcb[0]/2, dy, -extra-frame_w])
				c_cube(19.9, usbsy+2*extra, usbsz+2*extra+frame_w);
            translate([-pcb[0]/2 -19.9/2, dy, -extra-frame_w])
				c_cube(19.9, usbsy+2*usbframe+2*extra, usbsz+2*extra+frame_w+2*usbframe/2);
        }
        // card slot
        translate([pcb[0]/2, carddy, -cardsz-extra - 1.2]) // fudge
			c_cube(19.9, cardsy+2*extra, cardsz+2*extra);
        // power socket (near side)
        translate([powerdx, pcb[1]/2, -extra-frame_w])
			c_cube(powerssx+2*extra, 19.9, powerssz+2*extra+frame_w);
        // room for power plug
        translate([powerdx, pcb[1]/2+9.9/2+wall*1.4, -extra-frame_w])
			c_cube(powerpsx+2*extra, 9.9, powerpsz+2*extra+frame_w);
       // ether plug
        translate([-pcb[0]/2, etherdy, -extra-frame_w])
			c_cube(19.9, ethersy+2*extra, ethersz+2*extra+frame_w); // use half tol horizontally, seems to be enough
       // usb plugs
       usb_plug(usb1dy);
       usb_plug(usb2dy);
        // hdmi socket (near side)
        translate([hdmidx, pcb[1]/2, -extra-frame_w])
			c_cube(hdmisx+2*extra, 19.9, hdmisz+2*extra+frame_w);
        translate([hdmidx, pcb[1]/2+19.9/2-7.8/2, -extra-frame_w])
			c_cube(hdmipsx+2*extra, 7.8, hdmipsz+2*extra+frame_w);
        // audio plug (near side)
        translate([audiodx, pcb[1]/2 + 19.9/2, audiodz])
			rotate([90, 0, 0]) cylinder(r=audior/2+extra, h=19.9, $fn=20);
        translate([audiodx, pcb[1]/2, -extra-frame_w])
			c_cube(audior+2*extra, 19.9, audiodz+2*extra+frame_w);
        // camera opening
        if (have_camera) translate([-8.0, 0, pcb2roof - extra])
			c_cube(cam_box, cam_box, wall+2*extra);
    }

	module add() {
		hull () for (x = [-1, 1]) for (y = [-1, 1]) {
			translate([x*(pcb[0]/2+tol+wall-corner_r) + (x>0 ? extra_y : 0), y*(pcb[1]/2+tol+wall-corner_r), -frame_w])
				cylinder(r = corner_r+tol+wall, h = d, $fs=0.3); // include frame
			translate([x*(pcb[0]/2+tol+wall-corner2_r) + (x>0 ? extra_y : 0), y*(pcb[1]/2+tol+wall-corner2_r), pcb2roof+wall-corner2_r])
					sphere(r = corner2_r, $fs=0.3);
		}

	}

	module sub() {
		module plugrow_frame(xy, start, pins) {
			frmheight = 3.0;
            echo((pcb[1]/2+xy[1]));
			if (have_open_plugrow) translate([xy[0]+(start+(pins-1)/2)*2.56, xy[1]-(pcb[1]/2+xy[1]-2.56)/2, 1.0])
				c_cube(pins*2.56+2*tol+2*wall, (pcb[1]/2+xy[1]-2.56)+2*2.56+2*tol+2*wall, pcb2roof-1.0);
            else translate([xy[0]+(start+(pins-1)/2)*2.56, xy[1], frmheight])
				c_cube(pins*2.56+2*tol+2*wall, 2*2.56+2*tol+2*wall, pcb2roof-frmheight);

       }
		module plugrow_hole(xy, start, pins) {
            if (have_open_plugrow) translate([xy[0]+(start+(pins-1)/2)*2.56, xy[1]-9.9/2, -frame_w-d])
				c_cube(pins*2.56+2*tol, 2*2.56+2*tol+9.9, pcb2roof+wall+pcb[0]+frame_w);
			else translate([xy[0]+(start+(pins-1)/2)*2.56, xy[1], 0])
				c_cube(pins*2.56+2*tol, 2*2.56+2*tol, pcb2roof+wall);
        }
        module led_frame(dy) {
			frmheight = 2.0;
			translate([leddx, dy, frmheight])
				cylinder(r=leddia/2+wall, h=pcb2roof+d-frmheight, $fn=16);
        }
        module led_hole(dy) {
			translate([leddx, dy, 0])
				cylinder(r=leddia/2-d, h=pcb2roof+wall+d, $fn=16);

        }
		// room for bottom case within frame
		hull () for (x = [-1, 1]) for (y = [-1, 1])
			translate([x*(pcb[0]/2+tol+wall-corner_r) + (x>0 ? extra_y : 0), y*(pcb[1]/2+tol+wall-corner_r), -frame_w-d])
                cylinder(r = corner_r+tol, h = d+frame_w, $fs=0.3);
		// snap lock
		snap2(0, true);
		rotate([0, 0, 180]) snap2(0, false);
		difference() {
			// room for pcb
			translate([0, 0, -d]) cr_cube(2*tol+pcb[0], 2*tol+pcb[1], d+pcb2roof, 1.0);
			union () { // subtract from pcb:
				// plug rows
				if (have_plugrow || have_open_plugrow)
					plugrow_frame(plugrow1, 0, 20);
                // leds
				if (have_leds) {
					led_frame(led1dy);
                    led_frame(led2dy);
                }
                // strengthing frame around usb and ether
                translate([-pcb[0]/2, 0, tol])
				c_cube(19.9-2*d, pcb[1]+2*tol+2*d, usbsz+2*tol+frame_w);

                // pegs
                for (dx = [pcbmnt1dx,pcbmnt2dx]) for (dy = [pcbmnt1dy,pcbmnt2dy]) translate([dx, dy, 0]) {
                    cylinder(r1 = pcbmntdia/2 +wall, r2 = pcbmntdia/2 +2.5*wall, h = pcb2roof, $fs=0.2);
                }
			}

		}
        // hole for usb, ether and power
        plugs(tol);
		// plug rows
		if (have_plugrow || have_open_plugrow)
			plugrow_hole(plugrow1, 0, 20);
        // leds
		if (have_leds) {
			led_hole(led1dy);
            led_hole(led2dy);
        }
        // peg holes
        for (dx = [pcbmnt1dx,pcbmnt2dx]) for (dy = [pcbmnt1dy,pcbmnt2dy]) translate([dx, dy, 0]) {
            translate([0, 0, -d]) cylinder(r = pcbmntthreads/2, h = pcb2roof, $fs=0.2); // hole
        }
	}
	difference () {
		add();
		sub();
	}

    if (part == "demo")
        color("red") plugs(0);
}

//

if (part=="demo") { bottom(); translate([0, 0, wall+pcb2floor+pcb[2]]) top(); }
if (part=="bottom" || part=="all") translate([0, -35, 0]) bottom();
if (part=="top" || part=="all") translate([-0, 35, pcb2roof+tol+wall]) rotate([180,0,0]) top();

```


[User]
I'd like to create a spool holder for my 3D printer, something similar to the design I've been using, but more flexible and easier to customize. I want a design that can be mounted on the back of my printer, with a horizontal tube to hold the spool.

Here are the specific requirements I need:

*   **Mounting Bracket:** It should have a mounting bracket that sits against the back of my printer. This bracket needs to have a customizable gap to accommodate different printer wall thicknesses, and the thickness of the bracket itself should be adjustable. I'd also like to be able to specify the overall width of this bracket.
*   **Spool Tube:** The spool tube should have a variable length, diameter, and lip size (to keep the spool from sliding off). I need control over the tube's length, diameter, and the size of the retaining lip.
*   **Filleting:** I'd like some filleted corners on the mounting bracket where it transitions to the main body for strength.
*  **Rib Support:** Some support ribs extending along the tube on the top and a rib along the back to keep the mount from breaking under load.
*   **Support material:** The design should minimize the need for support material when printing, so I'd prefer to have the main body of the tube be slightly shorter than the mounting point.  This also helps when I use a printer with poor bridging capabilities.

I'd like this to be designed with OpenSCAD, so I can customize everything easily. It should be fully parametric so I can easily adjust all the sizes. I want the code to make use of the BOSL library, in order to have cleaner and more robust operations.

[Assistant]
FFFholder.scad:
```
//Length of hook to hang spool on.
tube_length = 80;
//Diameter of spool holder
tube_diameter = 40;
//Size of spool retaining lip. Don't go too big or your spool won't fit over it.
lip_size = 4;
//Cut short some for easy printing with no support
cut_support = 15;
//Thickness of the wall in the back of your printer.  Use 8 for flashforge.
hanger_gap = 8;
//Thickness of hanger structure.
structure_thickness = 4;
//Overall width of hanger
hanger_width = 50;
/* [Hidden] */
hanger_gap_height = 15;
fillet_radius = 2;
tube_radius = tube_diameter/2;

difference() {
//transform for printing bed
translate([0, 30,hanger_width/2 - cut_support ])
rotate([0,90,0])
union() {
	$fn=60;
	translate([-hanger_width/2,structure_thickness+hanger_gap,50/2-hanger_gap_height])
	difference() {
		union() {
			translate([0,-hanger_gap,3]) //cube([50,structure_thickness+hanger_gap,40-3]);
			h_rounded_cube([50,structure_thickness+hanger_gap,40-3],2);
			translate([0,-hanger_gap,-50+hanger_gap_height]) mirror([0,1,0])
				cube([50,structure_thickness,50]);
		}
		mirror([0,1,0]) translate([-1,0,15])
			h_rounded_cube([hanger_width+2,10,30],fillet_radius);
		mirror([0,1,0]) translate([-1,0,-10])
			h_rounded_cube([hanger_width+2,hanger_gap,15-structure_thickness+10],fillet_radius);
	}
	//tube
	difference() {
		union() {
			rotate([90,0,0]) cylinder(h=tube_length, r=tube_radius);
			rotate([90,0,0]) cylinder(h=10, r1=tube_radius+lip_size, r2=tube_radius);
			translate([0,-tube_length,0]) rotate([-90,0,0])
				cylinder(h=5, r=tube_radius+lip_size);
		}
		rotate([90,0,0]) cylinder(h=tube_length+1, r=tube_radius-structure_thickness);
		translate([-500,-500])mirror([0,0,1])cube([1000,1000,1000]);
	}
	//make ribs on the center for support in the direction of gravity.
	intersection() {
		rotate([90,0,0]) cylinder(h=tube_length, r=tube_radius);
		union() {
			for(i = [-40:5:40]) {
				rotate([90,0,0]) translate([-1+i,0,0]) cube([2,100,100]);
			}
			translate([-hanger_width/2,-tube_length,0])
				cube([hanger_width,tube_length,structure_thickness]);
		}
	}
}
translate([-500,-500,-1000])
cube([1000, 1000, 1000]);
}

module h_rounded_cube(xyz,r,$fn=30) {
	x = xyz[2];
	y = xyz[1];
	z = xyz[0];
	translate([z,0])
	rotate([0,-90,0])
	translate([r,r])
	hull() {
		cylinder(h=z,r=r);
		translate([0,y-2*r])
		cylinder(h=z,r=r);
		translate([x-2*r,0])
		cylinder(h=z,r=r);
		translate([x-2*r,y-2*r])
		cylinder(h=z,r=r);
	}
}
```


[User]
Hey, I'm looking to create a customizable bottle opener in OpenSCAD, similar to the one I saw on Thingiverse by mphardy, but with a text engraving feature. I'd like the ability to have two lines of text, and control the text's content, size, depth, position, spacing and font. I need this to be parametric so I can easily change parameters later.

Here's a breakdown of the features I'm looking for:

**Text Customization:**

*   **Two lines of text:** I need to be able to specify the text for a first and second line.
*   **Text Size:** Adjustable height for the text.
*   **Text Depth/Relief:** Adjustable depth for the text, to create either a raised or engraved effect.
*   **Text Position:** Ability to offset the text from the center of the bottle opener both horizontally and vertically.
*   **Text Spacing:** Adjust the spacing between the letters.
*   **Font:**  I want to be able to select a font. It would be great if this used a library that handles fonts, like the Write.scad library

**Coin Opening:**

*   **Coin Type:**  I need to be able to select from preset coin types (US 1 Cent, CA 1 Cent, EU 2 Cent, UK 1 Penny) or manually specify the coin radius, thickness and overhang, for other coins.
*  The coin portion should be a tapered slot/hole suitable for these coin types.

**Layout:**

*   **Rows and Columns:** I'd like to be able to arrange multiple openers in a grid layout, and control the number of rows and columns and spacing between them.

**Opener Design:**

*   **Basic Shape:** The opener should have a rounded trapezoid shape that’s tapered.
*   **Taper:**  Adjustable thickness and inset.
*   **Key Ring Slot:**  I'd like a slot to attach a key ring. The width, height, and inset of this slot need to be adjustable.
*   **Rounded Corners:** the shapes in general should have rounded corners and edges.

**Build Plate:**

*   I'd like to be able to specify a build plate size, ideally with some common presets or a manual mode. This could use a build_plate.scad library for convenience.

For libraries, I know that I want to use `write/Write.scad` for the fonts and `utils/build_plate.scad` for the build plate. I’m not sure if there are other good standard libraries I should be using, if so please use them! I'd like the design to be completely parametric, so I can modify the dimensions later. Thanks!

[Assistant]
PennyOpener.scad:
```
use <write/Write.scad>
use <utils/build_plate.scad>
/***************************************************************************************
 * Tapered pocket coin-op by Brett Beauregard (br3ttb)
 * Modified by mphardy for easier customization
 *
 * Notes:
 * -  with the non-tapered pocket coin-op I tested changing all the input variables.  I'm pretty confident in the
 *    geometry now, so I don't think people will need to adjust very much.  I did test the coin and thickness
 *    variables though, as those may actually be modified.
 *
 * - if you adjust the coin size you may get an error when trying to export the stl.  this is likely due to an
 *   intersection between the coin hole and the key ring slot.  you can either adjust the slot dimensions or
 *   the coin overhang to correct this
 ***************************************************************************************/

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

// The first line of text to use
Text1="Local";
// The second line of text to use
Text2="Pub";
// Size of letters
TextHieght=55; // [20 : 170]
// Depth/hieght of text (0=no text)
TextRelief=-10; // [-10 : 20]
// Text offset from slot
TextPositionX=-30; // [-120 : 0]
// Left/right text position
TextPositionY=0; // [-120 : 120]
// Spacing between letters
TextSpacing=12; // [6 : 20]
// The fontface to use
Font = "write/orbitron.dxf"; // ["write/BlackRose.dxf":BlackRose,"write/braille.dxf":braille,"write/knewave.dxf":knewave,"write/Letters.dxf":Letters,"write/orbitron.dxf":orbitron]

/* [Coin] */

// Type of coin to use
CoinType = "EU"; // [US:US 1 Cent, CA:CA 1 Cent, EU:EU 2 Cent, UK:UK 1 Penny, XX:Manual]
// Manual coin radius
ManualRadius=9.5;
// Manual coin thickness
ManualThickness=1.75;
// Manual coin overhang
ManualOverhang=3;

/* [Plate] */
// Number of rows
NumberOfRows=1; // [1 : 6]
// Gap between rows
RowSpacing=0; // [0 : 10]
// Number of columns
NumberOfColumns=1; // [1 : 6]
// Gap between columns
ColumnSpacing=0; // [0 : 10]

//for display only, doesn't contribute to final object
build_plate_selector = 0; //[0:Replicator 2,1: Replicator,2:Thingomatic,3:Manual]
//manual x-dimensino
build_plate_manual_x = 100; //[100:400]
//manual y-dimension
build_plate_manual_y = 100; //[100:400]

/* [Hidden] */
spacing = TextSpacing / 10;
xpos = TextPositionX / 10;
ypos = TextPositionY / 10;
relief = TextRelief / 10;
hieght = TextHieght / 10;
lineheight = (hieght/2);// the hieght of the first line

//Thickness / Taper
thickness=6;
inset=1.75;
centerthickness=2.5;

//Overall Opener Configuration
base=22;
length=50;
baseR1=5;
baseR2=5;
angle=13.5;

//Hole Configuration
holeBaseWidth=23;
holeBaseLoc=25.5;
holeLength=19.5;
holeR1=2;
holeR2=6;

//KeyRingSlot
slotWidth=17;
slotHeight=5;
slotInset=2.5;

rowoffset=35 + RowSpacing;
columnoffset=51 + ColumnSpacing;

build_plate(build_plate_selector,build_plate_manual_x,build_plate_manual_y);

$fs=1;
render() {
rotate([0,0,90])
  translate([-((rowoffset*(NumberOfRows-1))/2),-((columnoffset*(NumberOfColumns-1))/2),0])
    for (column = [0 : NumberOfColumns-1])
      translate([0,column*columnoffset,0])
        for (row = [0 : NumberOfRows-1])
          translate([row*rowoffset,0,0])
            rotate([0,0,(row%2)*180])
              opener_row();
}

module opener_row() {
  difference() {
    union() {
      rotate([0,0,90]) translate([-0.5*length, -0.5*base,0]) {
        if (CoinType=="US") {
		    opener(9.5, 1.75, 3);
        }
        if (CoinType=="CA") {
	  	    opener(9.5, 1.97, 3);
        }
  		  else if (CoinType=="EU") {
	 	    opener(9.4, 2.11, 3);
        }
		  else if (CoinType=="UK") {
		    opener(10.2, 2.07, 3);
        }
		  else if (CoinType=="XX") {
		    opener(ManualRadius, ManualThickness, ManualOverhang);
        }
      }
		if (relief>0) translate([ypos,xpos-lineheight,thickness+relief/2]) write(Text1,t=relief,h=hieght,center=true,font=Font,space=spacing);
if (relief>0) translate([ypos,xpos-3.3*lineheight,thickness+relief/2]) write(Text2,t=relief,h=hieght,center=true,font=Font,space=spacing);
    }
    translate([0,-20,14.5]) rotate([90,90,0]) cylinder(r=12,h=6);
    if (relief<0) translate([ypos,xpos-lineheight,thickness+relief/2]) write(Text1,t=-relief,h=hieght,center=true,font=Font,space=spacing);
         if (relief<0) translate([ypos,xpos-3.3*lineheight,thickness+relief/2]) write(Text2,t=-relief,h=hieght,center=true,font=Font,space=spacing);
  }
}

module opener(coinRadius, coinThickness, coinOverhang) {
  difference() {
		roundedInsetTrapezoid(length=length, r1=baseR1, r2=baseR2,mainthick=thickness,
					        baseW=base, angle=angle, inset=inset, centerthick=centerthickness);

		translate([holeBaseLoc,(base-holeBaseWidth)/2,0])
			roundedTrapezoid(thick=thickness, baseW=holeBaseWidth, angle=angle, length=holeLength, r1=holeR1, r2=holeR2);
		translate([slotHeight/2+slotInset,(base-slotWidth+slotHeight)/2,0])cylinder(r=slotHeight/2, h=thickness);
		translate([slotHeight/2+slotInset,(base+slotWidth-slotHeight)/2,0])cylinder(r=slotHeight/2, h=thickness);
		translate([slotInset,(base-slotWidth+slotHeight)/2,0])cube([slotHeight,slotWidth-slotHeight,thickness]);

		translate([holeBaseLoc-coinRadius+coinOverhang,base/2,(thickness-coinThickness)/2])
		{
			translate([0,-coinRadius,0])cube([coinRadius,2*coinRadius,coinThickness]);
			cylinder(r=coinRadius,h=coinThickness);
		}
	}
}

module roundedTrapezoid(thick=5, length=19.5, r1=2, r2=9.5, angle=13.5, baseW=23)
{
	x1 = length*sin(angle);
	difference()
	{
	trapezoidSolid(thick = thick, length = length, r1=r1, r2=r2, angle = angle, baseW=baseW);
		translate([length,-1*x1,0])cube([2*r2-length,baseW+2*x1,thick]);
		rotate([0,0,-1*angle])translate([0,-1*(r1+r2),0])cube([length,r1+r2, thick]);
		translate([0,baseW,0]) rotate([0,0,angle])cube([ length,r1+r2, thick]);
	}
}

module trapezoidSolid(thick=5, length=19.5, r1=1, r2=9.5, angle=13.5, baseW=23)
{
	r1oSet = length/cos(angle)-r1*tan((90+angle)/2);// -r1-r1*tan(angle);//-r1/cos(angle);
	sideoSet = r2*tan((90-angle)/2);// r2*(1- tan(angle));
	sidelen = r1oSet-sideoSet;
	bottomoSet = (length*sin(angle))-r1*tan((90+angle)/2);

	rotate([0,0,-1*angle])
	{
		translate([r1oSet,r1,0])cylinder(h=thick, r=r1);
		translate([sideoSet,r2,0])cylinder(h=thick,r=r2);
		translate([sideoSet,0,0]) cube([sidelen,2*r1,thick]);
	}
	translate([0,baseW,0])rotate([0,0,angle])
	{
		translate([0,-2*r1,0])
		{
			translate([r1oSet,r1,0])cylinder(h=thick, r=r1);
			translate([sideoSet,-r2+2*r1,0])cylinder(h=thick,r=r2);
			translate([sideoSet,0,0]) cube([sidelen,2*r1,thick]);
		}
	}
	translate([0,sideoSet,0])cube([length,baseW-2*sideoSet,thick]);
	translate([r2,-bottomoSet,0])cube([length-r2,baseW+2*bottomoSet,thick]);
}

module MakerbotM(height, thickness)
{
	radius = height/5.5;
	translate([-1.25*radius,1.5*radius,0])
	{
		difference() {
			cylinder(r=radius,h = thickness, $fn=20);
			translate([0,-1*radius,0])cube([radius,radius,thickness]);
		}
		translate([2.5*radius,0,0])difference() {
			cylinder(r=radius,h = thickness, $fn=20);
			translate([-1*radius,-1*radius,0])cube([radius,radius,thickness]);
		}
		translate([-1*radius,0,0]) {
			translate([0,-3.5*radius,0])cube([radius,3.5*radius,thickness]);
			translate([radius/2,-3.5*radius,0])cylinder(r=radius/2,h=thickness, $fn=20);
		}
		translate([0.75*radius,0,0]) {
			translate([0,-3.5*radius,0])cube([radius,4.5*radius,thickness]);
			translate([radius/2,-3.5*radius,0])cylinder(r=radius/2,h=thickness, $fn=20);
		}
		translate([2.5*radius,0,0]) {
			translate([0,-3.5*radius,0])cube([radius,3.5*radius,thickness]);
			translate([radius/2,-3.5*radius,0])cylinder(r=radius/2,h=thickness, $fn=20);
		}
		cube([2.5*radius,radius,thickness]);
	}
}

module roundedInsetTrapezoid(mainthick=6, length=19.5, r1=2, r2=9.5, angle=13.5, baseW=23, inset =1.75, centerthick=2.5)
{
	thick = (mainthick-centerthick)/2;
	 topr1=r1-inset;
	topr2=r2-inset;
	x1 = length*sin(angle);
	r1oSet = length/cos(angle)-r1*tan((90+angle)/2);// -r1-r1*tan(angle);//-r1/cos(angle);
	sideoSet = r2*tan((90-angle)/2);// r2*(1- tan(angle));
	sidelen = r1oSet-sideoSet;
	bottomoSet = (length*sin(angle))-r1*tan((90+angle)/2);
	sideangle = atan(inset/thick);
	difference()
	{
		union(){
			translate([0,0,thick+centerthick])roundedInsetSolid(thick=thick, length=length, r1=r1, r2=r2, angle=angle, baseW=baseW, inset =inset);
			translate([0,0,thick])roundedInsetSolid(thick=centerthick, length=length, r1=r1, r2=r2, angle=angle, baseW=baseW, inset =0);
			translate([0,baseW,thick])rotate([180,0,0])
				roundedInsetSolid(thick=thick, length=length, r1=r1, r2=r2, angle=angle, baseW=baseW, inset =inset);
		}

		//top angles
		translate([0,0,thick+centerthick])
		{
			translate([0,baseW,0]) rotate([0,0,angle])rotate([sideangle,0,0])cube([ length,r1+r2, thick+r1]);
			rotate([0,0,-1*angle])translate([0,-1*(r1+r2),0])translate([0,(r1+r2),0])
				rotate([-1*sideangle,0,0])translate([0,-1*(r1+r2),0])cube([length,r1+r2, thick+r1]);
			rotate([0,sideangle,0])translate([-2*thick,0,0])cube([2*thick,baseW+2*length*tan(angle),2*thick]);
			translate([length,-1*length*tan(angle),0])rotate([0,-1*sideangle,0])cube([2*thick,baseW+2*length*tan(angle),2*thick]);
		}

		//side angles
		rotate([0,0,-1*angle])translate([0,-1*(r1+r2),0])cube([length,r1+r2, mainthick]);
		translate([0,baseW,0]) rotate([0,0,angle])cube([ length,r1+r2, mainthick]);

		//bottom angles
		translate([0,baseW,thick])rotate([180,0,0])
		{
			translate([0,baseW,0]) rotate([0,0,angle])rotate([sideangle,0,0])cube([ length,r1+r2, thick+r1]);
			rotate([0,0,-1*angle])translate([0,-1*(r1+r2),0])translate([0,(r1+r2),0])rotate([-1*sideangle,0,0])
				translate([0,-1*(r1+r2),0])cube([length,r1+r2, thick+r1]);
			rotate([0,sideangle,0])translate([-2*thick,0,0])cube([2*thick,baseW+2*length*tan(angle),2*thick]);
			translate([length,-1*length*tan(angle),0])rotate([0,-1*sideangle,0])cube([2*thick,baseW+2*length*tan(angle),2*thick]);
		}

		//top bottom
		translate([0,-1*length*tan(angle),mainthick])cube([length,baseW+2*length*tan(angle),2*mainthick]);
		translate([0,-1*length*tan(angle),-2*mainthick])cube([length,baseW+2*length*tan(angle),2*mainthick]);
	}

}

module roundedInsetSolid(thick=2, length=19.5, r1=2, r2=9.5, angle=13.5, baseW=23, inset =1)
{
	 topr1=r1-inset;
	topr2=r2-inset;
	x1 = length*sin(angle);
	r1oSet = length/cos(angle)-r1*tan((90+angle)/2);// -r1-r1*tan(angle);//-r1/cos(angle);
	sideoSet = r2*tan((90-angle)/2);// r2*(1- tan(angle));
	sidelen = r1oSet-sideoSet;
	bottomoSet = (length*sin(angle))-r1*tan((90+angle)/2);
	sideangle = atan(inset/thick);
	rotate([0,0,-1*angle])
	{
		translate([r1oSet,r1,0])cylinder(h=thick, r1=r1, r2=topr1,$fn=20);
		translate([sideoSet,r2,0])cylinder(h=thick,r1=r2, r2=topr2,$fn=20);
		translate([sideoSet,0,0])rotate([-1*sideangle,0,0]) cube([sidelen,2*r1,thick+r1]);
	}
	translate([0,baseW,0])rotate([0,0,angle])
	{
		translate([0,-2*r1,0])
		{
			translate([r1oSet,r1,0])cylinder(h=thick, r1=r1, r2=topr1,$fn=20);
			translate([sideoSet,-r2+2*r1,0])cylinder(h=thick,r1=r2, r2=topr2,$fn=20);
			translate([sideoSet,0,0])translate([0,2*r1,0])rotate([sideangle,0,0])translate([0,-2*r1,0]) cube([sidelen,2*r1,thick+r1]);
		}
	}
	translate([0,sideoSet,0])cube([length,baseW-2*sideoSet,thick]);
	translate([r2,-bottomoSet,0])cube([length-r2,baseW+2*bottomoSet,thick]);
}

```