[User]
Okay, I'm looking to create a parametric 3D model of a Boo, you know, like the ghost from Super Mario. I'd like to be able to customize a few things about it, and I'd like it to be compatible with OpenSCAD.

Here's what I'm thinking. The base shape should be a sphere for the body, but with a flattened tail. I want it to have the classic Boo features, like the big, round eyes, a mouth, and of course, that signature tongue sticking out. The tongue should have a droopy, organic shape to it, almost like it's melting a bit. I'd also like to include the option to add the little fangs that some Boos have.

It needs to be parametric so that I can easily change the size and quality of the model using variables for overall scale, as well as the detail or fineness of the mesh.

I want some control over the various parts of the model, too. I want to be able to choose whether to include a witch hat or not, so I'll need a simple conical hat that sits on top. It should be a separate piece, so I can print it in a different color or material. I would also like the option to include the little arms the Boo sometimes has, and if I do, they'll need to be simple cylinder extrusions capped with spheres. If the arms are included, I want them to be physically separate objects for rendering purposes, but also a part of the base model when they're supposed to be attached.

Ideally, the user should be able to select different render modes - specifically, I'd want to be able to render only the base ghost body, or just the hat, or just the extra parts like the teeth and arms, or the fully assembled model. And it would also be nice to add in a tiny support for the bottom of the model where the tail extends.

I'm thinking the whole model should be generated in one or more .scad files, and I'd like to avoid relying on external libraries to keep things simple. I'd like to have variables at the top of the file to control the model's quality, the overall scale percentage, and which parts of the model are rendered. There should also be switches to enable or disable the hat, teeth, arms, and tail support.

Can you generate the appropriate OpenSCAD files for me?

[Assistant]
JB_halloween_model_1.scad:
```
//Super Mario "BOO" Style Ghost
//Joe Brown

//The Quality of The Model
model_quality = 50;//[1:100]
//The Scale Of the Model
model_scale_percent = 60; //[50:200]
//What Should Be Rendered?
model_render = "Full"; //[All, Base, Hat, Extras, Full]
//Include Hat in Model?
include_hat = "Yes"; //[Yes,No]
//Include Teeth in Model?
include_teeth = "Yes"; //[Yes,No]
//Include Arms in Model?
include_arms = "Yes"; //[Yes,No]
//Show the Tail End Support for the model?
show_support = "Yes"; //[Yes,No]

height = 50*1; //model base height (scale will be used so this is hidden)
$fn = model_quality*1;
model_scale = model_scale_percent / 100;

rotate([0,0,180]) {
    All();
}

module All() {
difference() {
    //the ghost itself
    scale([model_scale,model_scale,model_scale]) {
        translate([0,0,height]) {
            difference() {
                if (model_render=="All" || model_render=="Base") {
                    ghost(); //the ghost model
                }
                else if (model_render == "Full") {
                    ghost_full();
                }
                if (include_hat == "Yes" && (model_render=="All" || model_render=="Base" || model_render == "Full")) {
                    hat_base(); //makes room for the hat
                }
            }
        }
    }
    if (model_render=="All" || model_render=="Base") {
    //the difference stuff, this is to flatten the tail mainly
    translate([-50,-40,0]) {
            rotate([0,90,0]) {
                cube([20,80,100]);
            }
        }
    }
}

//The Hat for the full render
if (model_render=="Full" && include_hat =="Yes") {
        scale([model_scale,model_scale,model_scale]) {
            translate([0,0,height]) {
            hat_full();
        }
    }
}

//Render the Extras in the middle?
if (model_render == "Extras") {
    scale([model_scale,model_scale,model_scale]) {
        ghost_parts();
    }
}

//Render the hat WITH the other models?
if (include_hat == "Yes" && (model_render=="All")) {
    scale([model_scale,model_scale,model_scale]) {
            translate([120,0,height-(height*1.55)]) {
                hat(); //the hat. Not Unioned, as it is a seperate piece.
            }
     }
}

//Or render the hat model by itself
if (model_render == "Hat") {
   scale([model_scale,model_scale,model_scale]) {
            translate([0,0,0]) {
                hat_alone(); //the hat. Not Unioned, as it is a seperate piece.
            }
     }
}

}

module ghost() {

    //body
    if (model_render=="Base" || model_render=="All") {
    difference() {
    union() { //keeps the body together
        difference() {
        sphere(r=height);
        //eyes

            //left
            translate([height/2,height,height/2]) {
                cylinder(h=height/2,r1=height/3.5,r2=height/3.5,center=true);
            }
            //right
            translate([-height/2,height,height/2]) {
                cylinder(h=height/2,r1=height/3.5,r2=height/3.5,center=true);
            }
        //mouth
            translate([0,50,-10]) {
                    translate([0,0,-4]) {
                        cylinder(h=25,r1=20,r2=30,center=true);
                    }

            }

        //eyebrow
            translate([height-(height/1.6),height-(height/4),height-(height/2)]) {
                rotate([0,-90,90]) {
                     difference() {
                        cylinder(r=10,h=10);
                        union() {
                            translate([0,0,-.1])  cylinder(r=9,h=11);

                            translate([-10,0,5])  cube([30,30,12],center=  true);
                        }
                    }
                }
            }

            translate([-(height-(height/1.6)),height-(height/4),height-(height/2)]) {
                rotate([0,-90,90]) {
                     difference() {
                        cylinder(r=10,h=10);
                        union() {
                            translate([0,0,-.1])  cylinder(r=9,h=11);

                            translate([-10,0,5])  cube([30,30,12],center=  true);
                        }
                    }
                }
            }
        }

        //mouth backing
        //this fills in the back of the mouth to make sure there is not
        //a gaping hole, but rather a solid back like in the Mario Series
        translate([-height/2,height/5,-height/2]) {
            cube([50,25,25]);
        }

        //tongue
        //tongue, extrudes from mouth and then droops down
        translate([-height/4,height/3,-height/2]) {
            //intial extrude
            minkowski() {
                cube([25,32,5]);
                sphere(r=2);
            }
            //outer "droop" of the tongue
            translate([0,-10,0]) {
                hull() {
                    translate([0,35,-23]) {
                        minkowski() {
                            cube([25,8,28]);
                            sphere(r=2);
                        }
                    }
                    translate([0,35,-23]) {
                        minkowski() {
                            cube([25,15,5]);
                            sphere(r=2);
                        }
                    }
                }
            }
        }

        //tail
        //tiny extrude from backend of body
        translate([0,-height/1.5,-height/1.5]) {
            rotate([0,45,90]) {
               cylinder(h=29,r1=10,r2=25,center=true);
            }

        }

        //support for tail

        if (show_support == "Yes") {
            translate([-1.5,-height+(-0.6),-height*1]) {
                cube([3,2,13.4]);
            }
        }

    }

    //start differencing the extra parts
     //arms
        //as seen in the mario games, these are simple extrudes capped with circles

    if (include_arms == "Yes") {
        translate([height,0,0]) {
            union() {
                rotate([0,-90,0]) {
                    cylinder(h=30,r1=6,r2=23,center=true);
                }
                translate([14,0,0]) {
                    sphere(r=6);
                }
            }
        }
        translate([-height,0,0]) {
            union() {
                rotate([0,90,0]) {
                    cylinder(h=30,r1=6,r2=23,center=true);
                }
                translate([-14,0,0]) {
                    sphere(r=6);
                }
            }
        }
    }
}
}

    //extra parts
    if (model_render == "All") {
            //teeth
            if (include_teeth == "Yes") {
            translate([0,100,-height+(height/8.3)]) {
                rotate([0,-180,0]) {
                cylinder(h=9,r1=2,r2=7,center=true);
                }
            }
            //slightly larger "fangs"
            translate([16,100,-height+(height/6.3)]) {
                rotate([0,-180,0]) {
                cylinder(h=12,r1=2,r2=7,center=true);
                }
            }
            translate([-16,100,-height+(height/6.3)]) {
                rotate([0,-180,0]) {
                cylinder(h=12,r1=2,r2=7,center=true);
                }
            }
        }

            //physical arms, seperated
        if (include_arms == "Yes") {
        translate([-height,130,height-(height*1.74)]) {
                union() {
                    rotate([0,-180,0]) {
                        cylinder(h=25,r1=5,r2=14,center=true);
                    }
                    translate([0,0,11]) {
                        sphere(r=5);
                    }
                }
            }
            translate([height,130,height-(height*1.74)]) {
                union() {
                    rotate([0,-180,0]) {
                        cylinder(h=25,r1=5,r2=14,center=true);
                    }
                    translate([0,0,11]) {
                        sphere(r=5);
                    }
                }
            }

        }
    }

}

//module for the ghost "extra" parts alone
module ghost_parts() {
    //extra parts
        //teeth
        translate([0,0,6]) {
            rotate([0,-180,0]) {
            cylinder(h=9,r1=2,r2=7,center=true);
            }
        }
        //slightly larger "fangs"
        translate([16,0,8]) {
            rotate([0,-180,0]) {
            cylinder(h=12,r1=2,r2=7,center=true);
            }
        }
        translate([-16,0,8]) {
            rotate([0,-180,0]) {
            cylinder(h=12,r1=2,r2=7,center=true);
            }
        }

        //physical arms, seperated
    translate([-height,0,12.5]) {
            union() {
                rotate([0,-180,0]) {
                    cylinder(h=25,r1=5,r2=14,center=true);
                }
                translate([0,0,11]) {
                    sphere(r=5);
                }
            }
        }
        translate([height,0,12.5]) {
            union() {
                rotate([0,-180,0]) {
                    cylinder(h=25,r1=5,r2=14,center=true);
                }
                translate([0,0,11]) {
                    sphere(r=5);
                }
            }
        }
}

module hat_base() { //this is simply used to different the top to make room for the hat
    translate([0,0,height-(height/20)]) {
    cylinder(h=20,r1=50,r2=50,center=true);
    }
}

module hat() { //the actual hat. not unioned because it is a seperate piece
    union() {
    //base
        translate([0,0,height-(height/2.6)]) {
            cylinder(h=5,r1=50,r2=50,center=true);
        }
        //top part
        translate([0,0,height+20]) {
            cylinder(h=80,r1=35,r2=1,center=true);
        }
    }
}

module hat_alone() { //the hat alone to be rendered in the center
    union() {
        //base
        translate([0,0,2.5]) {
            cylinder(h=5,r1=50,r2=50,center=true);
        }
        //top part
        translate([0,0,40]) {
            cylinder(h=80,r1=35,r2=1,center=true);
        }
    }
}

module ghost_full() {

    //body
    union() { //keeps the body together
        difference() {
        sphere(r=height);
        //eyes

            //left
            translate([height/2,height,height/2]) {
                cylinder(h=height/2,r1=height/3.5,r2=height/3.5,center=true);
            }
            //right
            translate([-height/2,height,height/2]) {
                cylinder(h=height/2,r1=height/3.5,r2=height/3.5,center=true);
            }
        //mouth
            translate([0,50,-10]) {
                    translate([0,0,-4]) {
                        cylinder(h=25,r1=20,r2=30,center=true);
                    }

            }

        //eyebrow
            translate([height-(height/1.6),height-(height/4),height-(height/2)]) {
                rotate([0,-90,90]) {
                     difference() {
                        cylinder(r=10,h=10);
                        union() {
                            translate([0,0,-.1])  cylinder(r=9,h=11);

                            translate([-10,0,5])  cube([30,30,12],center=  true);
                        }
                    }
                }
            }

            translate([-(height-(height/1.6)),height-(height/4),height-(height/2)]) {
                rotate([0,-90,90]) {
                     difference() {
                        cylinder(r=10,h=10);
                        union() {
                            translate([0,0,-.1])  cylinder(r=9,h=11);

                            translate([-10,0,5])  cube([30,30,12],center=  true);
                        }
                    }
                }
            }
        }

        //mouth backing
        //this fills in the back of the mouth to make sure there is not
        //a gaping hole, but rather a solid back like in the Mario Series
        translate([-height/2,height/5,-height/2]) {
            cube([50,25,25]);
        }

            //teeth
        if (include_teeth == "Yes") {
        translate([0,41.7,-7]) {
        cylinder(h=9,r1=2,r2=7,center=true);
        }
        //slightly larger "fangs"
        translate([16,38,-7]) {
        cylinder(h=12,r1=2,r2=7,center=true);
        }
        translate([-16,38,-7]) {
        cylinder(h=12,r1=2,r2=7,center=true);
        }
        }

        //tongue
        //tongue, extrudes from mouth and then droops down
        translate([-height/4,height/3,-height/2]) {
            //intial extrude
            minkowski() {
                cube([25,32,5]);
                sphere(r=2);
            }
            //outer "droop" of the tongue
            translate([0,-10,0]) {
                hull() {
                    translate([0,35,-23]) {
                        minkowski() {
                            cube([25,8,28]);
                            sphere(r=2);
                        }
                    }
                    translate([0,35,-23]) {
                        minkowski() {
                            cube([25,15,5]);
                            sphere(r=2);
                        }
                    }
                }
            }
        }

        //arms
        //as seen in the mario games, these are simple extrudes capped with circles
        if (include_arms == "Yes") {
        translate([height,0,0]) {
            union() {
                rotate([0,-90,0]) {
                    cylinder(h=35,r1=5,r2=20,center=true);
                }
                translate([14,0,0]) {
                    sphere(r=6);
                }
            }
        }
        translate([-height,0,0]) {
            union() {
                rotate([0,90,0]) {
                    cylinder(h=35,r1=5,r2=20,center=true);
                }
                translate([-14,0,0]) {
                    sphere(r=6);
                }
            }
        }
    }

        //tail
        //tiny extrude from backend of body
        translate([0,-height/1.5,-height/1.5]) {
            rotate([0,45,90]) {
               cylinder(h=18,r1=10,r2=25,center=true);
            }
        }
    }
}

module hat_full() { //the hat for the preview render
    union() {
    //base
        translate([0,0,height-(height/5)]) {
            cylinder(h=5,r1=50,r2=50,center=true);
        }
        //top part
        translate([0,0,height+20]) {
            cylinder(h=80,r1=35,r2=1,center=true);
        }
    }
}
```


[User]
I need a ball-and-socket joint designed in OpenSCAD. It's for a small mirror that I want to stick to a wall, so it needs a way to mount.

Here's what I'm thinking: The design should have two main parts – a ball and a socket. The socket should have a flange with mounting holes and a neck that extends out to hold the socket itself. I'd like to be able to control all of the dimensions, and be able to easily generate just the ball, just the socket, both together, or both assembled in the correct orientation.

Here are some specific parameters I'd like to control:

*   `ballSize`: The diameter of the ball.
*   `ballSlop`: The extra space between the ball and the socket for movement (the socket diameter should be `ballSize + ballSlop`).
*   `socketThickness`: The thickness of the socket walls.
*   `flangeThickness`: The thickness of the mounting flange.
*   `flangeDiameter`: The diameter of the mounting flange.
*   `neckLength`: The length of the neck connecting the flange to the socket.
*   `holeSize`: The diameter of the mounting holes.
*   `screwHead`: The diameter of the screw head for relief around the mounting holes.
*  `flangeMountFactor`: The position of the screw holes relative to the flange diameter as a percentage, for example a value of `0.27` would place them at 27% of the flange diameter from the center.
*   `part`: A string variable controlling what to render: `"makeBall"` for the ball alone, `"makeSocket"` for the socket alone, `"makeBoth"` to show the ball and socket side by side, and `"assembled"` to render them correctly oriented as if the parts were assembled.

I’d like the socket to have a bevelled lip to help the ball snap in. I'd also like a few notches to help with insertion, and for the bottom to remain flat. I would expect to use a high `$fn` setting for smooth curves.

It'd be great if the design was fully parametric so I could adjust everything as needed. I'm not planning on using any libraries, just the standard OpenSCAD features.

[Assistant]
BallAndSocket.scad:
```
// Ball-and-socket joint for an articulated mirror stuck to a wall

part = "makeBoth"; // [makeBall:Ball,makeSocket:Socket,makeBoth:Both,assembled:Assembled]

// Diameter of Ball
ballSize = 15;

// Oversize for Socket
ballSlop = 1;

// Thickness of socket walls
socketThickness = 2.5;

// Thickness of Flange
flangeThickness = 2.5;

// Diameter of Flange
flangeDiameter = 40;

// Length of neck extension
neckLength = 10;

// Diameter of Mounting Holes
holeSize = 3.2;

// Diameter of Screw Head
screwHead = 6.5;

/* [Hidden] */
$fn=50;
flangeMountFactor=.27; // placement for flange holes

if (part=="makeBall") ball();
else if (part=="makeSocket") socket();
else if (part=="makeBoth")
{
    ball();
    translate([flangeDiameter + 1, 0, 0]) socket();
}
else // assembled
{
    socket();
    translate([0,0,(flangeThickness+neckLength)*2-ballSize*.25]) rotate([180,0,0]) ball();
}

module ball()
{
    union()
    {
        base();

        // ball
        translate([0,0,flangeThickness+neckLength]) sphere(d=ballSize);
    }
}

module socket()
{
    difference()
    {
        union()
        {
            base();

            // outer ball
            translate([0,0,flangeThickness+neckLength-ballSize*.25]) sphere(d=ballSize+(socketThickness*2));

        }

        // cut off top of ball
        translate([0,0,flangeThickness+neckLength]) cylinder(d=2*ballSize,h=2*ballSize);

        // add socket hole
        translate([0,0,flangeThickness+neckLength-ballSize*.25]) sphere(d=ballSize+ballSlop);

        // second sphere to bevel the lip
        translate([0,0,flangeThickness+neckLength+ballSize*.15]) sphere(d=ballSize+ballSlop);

        // add notches for easier insertion
        for (i=[0,90])
        rotate([0,0,i]) translate([0,0,flangeThickness+neckLength]) cube([socketThickness,ballSize + (socketThickness*2) + .1,ballSize*.6], center=true);

        // make sure bottom stays flat
        translate([0,0,-flangeDiameter]) cube(flangeDiameter*2,center=true);
    }
}

module base()
{
    difference()
    {
        union()
        {
            // flange base
            translate([0,0,flangeThickness/2])cylinder (d=flangeDiameter,h=flangeThickness,center=true);

            // neck
            hull()
            {
                translate([0,0,flangeThickness/2])cylinder (d=flangeDiameter/2,h=flangeThickness,center=true);
                translate([0,0,flangeThickness/2+neckLength-ballSize*.3]) cylinder(d=ballSize/2,h=.1,center=true);
            }
        }

        // flange holes
        for (i=[-1,1],j=[-1,1])
        translate ([i*(flangeDiameter*flangeMountFactor),j*(flangeDiameter*flangeMountFactor),-.1]) cylinder (d=holeSize,h=flangeThickness+neckLength);

        // screwhead relief
        for (i=[-1,1],j=[-1,1])
        translate ([i*(flangeDiameter*flangeMountFactor),j*(flangeDiameter*flangeMountFactor),flangeThickness-.4]) cylinder (d=screwHead,h=neckLength);

    }

}
```


[User]
Hey, I'm looking to get a parametric OpenSCAD design for a Prusa i3 compatible Z-axis top end. I have a design I'm using now but it has some issues with warping, and I'd like to be able to tweak dimensions easily. I'm using cheap ABS so I'm hoping to get something more robust.

Here's what I need:

*   **Function:**  It needs to act as a Z-axis top end for a Prusa i3, holding a 625zz bearing, and should be mirrored for use on either side of the printer.
*   **Bearing Support:** It should have a hole for a 625zz bearing (and I’d like the bearing hole to be parametric, in case I want to use a different bearing in the future – I included some common bearing sizes in the existing design), and also holes for a threaded rod for the Z axis lead screw, and a smooth rod for the Z axis guide.
*   **Mounting:** It needs to have mounting holes for securing it to the printer frame using screws and nuts. I'd also like to be able to specify the size of the screws and nuts as a parameter. My current design uses M3 screws, but I'd like the flexibility to change that, along with the associated nuts and washers.
*   **Overall Shape:** The overall shape should be similar to the existing file (included in the prompt as `top-ends-frame-prusa-i3-compatible.scad`), which has some chamfered edges and a combination of rectangular and cylindrical features, and it's critical that it's strong, minimizing warping as much as possible.
*   **Parametric Design:**  I'd like it to be fully parametric, with parameters for:
    *   Overall width, height, and depth.
    *   The front width.
    *   The diameter and thickness of the bearing.
    *   The size of the mounting screws and nuts (including the associated nut widths and thicknesses).
    *   The size of the smooth and threaded rod holes.
    *   Tolerances for all holes (bearing, screws, nuts, rods).
     * A flag to mirror the object for the opposite side of the printer.

I'm comfortable with standard OpenSCAD functionality, so I don't need any special libraries. It would be awesome if you could generate an OpenSCAD file that achieves this. Thanks!

[Assistant]
top-ends-frame-prusa-i3-compatible.scad:
```
//////////////////////////////////////////////////////////////////////////////////////
///
///  Z-axis - top end - for FRAME Prusa i3 compatible
///
//////////////////////////////////////////////////////////////////////////////////////
///
///  2016-04-21 bfj@bflm.eu, Czech Republic
///
///  released under Creative Commons - Attribution - Share Alike licence (CC BY-SA)
//////////////////////////////////////////////////////////////////////////////////////

/*[dimensions]*/
bearing_tolerance = 0.18;
hole_tolerance = 0.2;
nut_tolerance = 0.15;
pos = 0;//[0:Right,1:Left]

/*[hidden]*/
width = 54.2;
height = 8;
depth = 40;
front_width = 34.6;
tolerance = 0.02;
//for next frame generation
screw=3;//[3,4,5]
m=5;//[5,6,8]

//Based on: http://www.roymech.co.uk/Useful_Tables/Screws/Hex_Screws.htm
METRIC_NUT_AC_WIDTHS =
[
	-1, //0 index is not used but reduces computation
	-1,
	-1,
	6.40,//m3
	8.10,//m4
	9.20,//m5
	11.50,//m6
	-1,
	15.00,//m8
	-1,
	19.60,//m10
	-1,
	22.10,//m12
	-1,
	-1,
	-1,
	27.70,//m16
	-1,
	-1,
	-1,
	34.60,//m20
	-1,
	-1,
	-1,
	41.60,//m24
	-1,
	-1,
	-1,
	-1,
	-1,
	53.1,//m30
	-1,
	-1,
	-1,
	-1,
	-1,
	63.5//m36
];
METRIC_NUT_THICKNESS =
[
	-1, //0 index is not used but reduces computation
	-1,
	-1,
	2.40,//m3
	3.20,//m4
	4.00,//m5
	5.00,//m6
	-1,
	6.50,//m8
	-1,
	8.00,//m10
	-1,
	10.00,//m12
	-1,
	-1,
	-1,
	13.00,//m16
	-1,
	-1,
	-1,
	16.00//m20
	-1,
	-1,
	-1,
	19.00,//m24
	-1,
	-1,
	-1,
	-1,
	-1,
	24.00,//m30
	-1,
	-1,
	-1,
	-1,
	-1,
	29.00//m36
];

bearing_623 = [10, 4, 3 ];
bearing_624 = [13, 5, 4];
bearing_625 = [16, 5, 5];
bearing_626 = [19, 6, 6];
bearing_608 = [22, 7, 8];

bearing= bearing_625;
if(m==6){
    bearing= bearing_626;
} else if (m==8){
    bearing= bearing_608;
}

function reduction_hole(r, fn) = r/cos(360/fn);

//main box
module chamfered_main_box(h,d=[1,1,1]){
//z-box points
a0 = [[width-front_width+d[0],+d[1]],[width-d[0],+d[1]],[width-d[0],depth-d[1]],[+d[0],depth-d[1]]];
//x-box points
a1 = [[width-front_width,+d[1]+4],[width,+d[1]+4],[width,depth-d[1]],[0,depth-d[1]]];
//y-box points
a2 = [[width-front_width+d[0]+4,0],[width-d[0]-4,0],[width-d[0],depth],[+d[0],depth]];
//path
pa0=[[0,1,2,3]];
hull(){
        //z-box
        linear_extrude(h) polygon(a0,pa0);
        //x-box
        linear_extrude(h-d[2]) polygon(a1,pa0);
        //y-box
        linear_extrude(h-d[2]) polygon(a2,pa0);
        //front corner
        translate([width-front_width+3,4,0])cylinder(r=4,h=h-d[2],$fn=32);
        //front corner ortogonal
        translate([width-4,4,0])cylinder(r=4,h=h-d[2],$fn=32);
        }

}

//final module
module top_end(){

difference(){
//main box
chamfered_main_box(height,[1.5,1.5,1]);
//screw holes
translate([width-4.5,4.5,-tolerance])cylinder(r=reduction_hole(screw/2+hole_tolerance,32),h=height+2*tolerance,$fn=32);
translate([width-4.5,4.5,height-tolerance-nut_tolerance-METRIC_NUT_THICKNESS[screw]])cylinder(r=METRIC_NUT_AC_WIDTHS[screw]/2+nut_tolerance,h=METRIC_NUT_THICKNESS[screw]+2*nut_tolerance,$fn=6);
translate([width-8.3,18.7,-tolerance])cylinder(r=reduction_hole(screw/2+hole_tolerance,32),h=height+2*tolerance,$fn=32);
 translate([width-8.3,18.7,height-tolerance-nut_tolerance-METRIC_NUT_THICKNESS[screw]])cylinder(r=METRIC_NUT_AC_WIDTHS[screw]/2+nut_tolerance,h=METRIC_NUT_THICKNESS[screw]+2*nut_tolerance,$fn=6);
translate([width-27.5,35,-tolerance])cylinder(r=reduction_hole(screw/2+hole_tolerance,32),h=height+2*tolerance,$fn=32);
translate([width-27.5,35,height-tolerance-nut_tolerance-METRIC_NUT_THICKNESS[screw]])cylinder(r=METRIC_NUT_AC_WIDTHS[screw]/2+nut_tolerance,h=METRIC_NUT_THICKNESS[screw]+2*nut_tolerance,$fn=6);
translate([width-46,35,-tolerance])cylinder(r=reduction_hole(screw/2+hole_tolerance,32),h=height+2*tolerance,$fn=32);
translate([width-46,35,height-tolerance-nut_tolerance-METRIC_NUT_THICKNESS[screw]])cylinder(r=METRIC_NUT_AC_WIDTHS[screw]/2+nut_tolerance,h=METRIC_NUT_THICKNESS[screw]+2*nut_tolerance,$fn=6);
translate([width-37,15,-tolerance])cylinder(r=reduction_hole(screw/2+hole_tolerance,32),h=height+2*tolerance,$fn=32);
translate([width-37,15,height-tolerance-nut_tolerance-METRIC_NUT_THICKNESS[screw]])cylinder(r=METRIC_NUT_AC_WIDTHS[screw]/2+nut_tolerance,h=METRIC_NUT_THICKNESS[screw]+2*nut_tolerance,$fn=6);
//----
//M5 threaded rod hole
translate([width-27.5,10.5,-tolerance])cylinder(r=reduction_hole(m/2+hole_tolerance,32),h=height+2*tolerance,$fn=32);
//625zz bearing hole
translate([width-27.5,10.5,-tolerance])cylinder(r=reduction_hole(bearing[0]/2+bearing_tolerance, 32),h=bearing[1]+2*tolerance+0.1,$fn=32);
//M8 smooth rod hole
translate([width-10.5,10.5,-tolerance])cylinder(r=reduction_hole(8/2+hole_tolerance,32),h=5+2*tolerance,$fn=32);
     }

}

if(pos == 1){
    mirror([1,0,0]) top_end();
     /*translate([122.5-width,+40+26+34.15,0])rotate([180,0,270]){
        import("stop_warp_Virsus_Tvirtinimas_1.stl");
    }*/
} else {
    top_end();
   /*translate([width,+40+26+34.15,0])rotate([180,0,270]){
      import("stop_warp_Virsus_Tvirtinimas_2.stl");
   }*/
}

```


[User]
Hey, I'm working on a Halloween project and want to create a parametric model of a black cat using OpenSCAD. I'm envisioning a cartoonish style, not super realistic. I'm thinking the main body parts will be the head, body, front legs, back legs, tail, and ears.

Here's what I'm looking for:

*   **Head:** Should be a mostly spherical shape, but I would like some slightly pointy features in front to represent cheeks, and maybe even some indentations for where the eyes would go.
*   **Body:** Should be a rounded, elongated shape, almost like a stretched sphere, kind of narrowing towards the rear end where the tail connects.
*   **Legs:** The front legs should be relatively simple cylinders that angle slightly forward, and the back legs should be somewhat thicker.
*  **Tail:**  I want two tail options. One should be a standard tapered tail, made from a series of scaled spheres, and the other should be a straight tail, also formed from spheres, but not tapered.
*   **Ears:** Also want two options here:  One should be the usual pointy triangle-ish ears, and the other should be little sphere ears.
*   **Color:** The default color for the cat should be slate gray, with black accents for details like the legs and eyes, but I'd like the color to be a parameter I can adjust.

I need to be able to easily adjust the size of the various body parts using variables, and would like to have options for choosing which tail and ears are used through parameters. I'd also like a render quality variable that I can adjust to render faster for testing, and slower for final output. Finally, I would like a parameter for choosing which of the individual parts or the assembled object are rendered. Can you generate the OpenSCAD files for this model?

[Assistant]
PJHR-KC.scad:
```
//Halloween Project I
//Kevin Chen
//H.Robotics I
//Oct. 11th
//This is a blackcat of Halloween style,
//Black does not have very good looking (actually white is the best). In order to make it have a better looking, I used slate gray.
////////////////////////////////////

//parts
parts_to_render = 1; // [1:Ear, 2:Head, 3:Body, 4:Front_Leg, 5:Tail, 6:preview_part, 7:Assembled]

//Tails
tail_to_choose = 1; //[1:Regular, 2:Straight]

//Ears
ears_to_choose = 1; //[1:Round, 2:Sphere]

// Draft for preview, production for final
Render_Quality = 40;    // [10:Fastest(maybe cooler than others), 40:Fast, 60:Precise, 100:Highest_Definition]

$fn = Render_Quality;

module R(){
    union(){
    color("black")
    translate([-9,4,72])
    {
        difference()
        {
            rotate([90,-20,0])
            resize(newsize=[20,50,20])
            sphere(10);

        }
    }
    }
}

module L(){
    union(){
    color("black")
    translate([9,4,72])
    {
        difference()
        {
            rotate([90,20,0])
            resize(newsize=[20,50,20])
            sphere(10);

        }
    }
}
}

module R2(){
    union(){
        color("black")
    translate([-10,4,90])
    {
            rotate([90,-20,0])
            sphere(10);

        }
    }
    }

module L2(){
    union(){
    color("black")
    translate([10,4,90])
    {
        difference()
        {
            rotate([90,-20,0])
            sphere(10);

        }
    }
}
}

module Head(){
    union(){
    color("gray")
    translate([0,4,0])
    {
    difference()
    {
        translate([0,0,70])
        {
            sphere(20)
            sphere(18);
        }

    }
    translate([0,-18,70])
    {
        resize([5,5,5])
        sphere(10);
    }
    translate([8,-14,78])
    {
        resize([5,5,5])
        sphere(10);
    }
    translate([-8,-14,78])
    {
        resize([5,5,5])
        sphere(10);
    }
}
}
}

module Body(){
    union(){
    color("grey")
    translate([0,0,55])
    {
        resize([20,10,10])
        sphere(15);

        translate([0,8,0])
        {
            sphere(17);
        }
        hull()
        {
            translate([0,15,-10])
            {
                sphere(18);
            }
            translate([0,20,-20])
            {
                sphere(19);
            }
            translate([0,30,-12])
            {
                sphere(10);
            }
            translate([0,40,-30])
            {
                resize([20,20,40])
                sphere(12);
            }
            translate([0,45,-40])
            {
                sphere(12);
            }
            translate([0,45,-45])
            {
                sphere(10);

            }
        }
    }
}
}
module Back_Leg(){

    union(){
    //left
    color("darkgray")
    translate([5,30,25])
    {
        resize([35,0,40])
        sphere(15);
    }
        color("black")
        translate([20,10,7])
        {
            rotate([-90,0,30])
            cylinder(r=7,h=40);
        }
        color("black")
        translate([-5,30,25])
        {
            sphere(10);
        }
        color("gray")
        translate([20,10,8])
        {
        sphere(8);
        }
    //right
    color("darkgray")
    translate([-5,30,25])
    {
        resize([35,0,40])
        sphere(15);
    }
        color("black")
        translate([-20,10,7])
        {
            rotate([-90,0,-30])
            cylinder(r=7,h=40);
        }
        color("black")
        translate([-5,30,25])
        {
            sphere(10);
        }
        color("gray")
        translate([-20,10,8])
        {
        sphere(8);
        }
}
}
module Front_Leg(){

    union(){
    //left
    color("black")
    translate([4,-4,3])
    {
        rotate([-18,10,0])
        cylinder(r=5,r2=4,h=50);
    }
    color("darkgray")
    translate([5.5,-4,6])
    {
       sphere(6.5);
   }

    //right
    color("black")
    translate([-4,-4,3])
    {
        rotate([-18,-10,0])
        cylinder(r=5,r2=4,h=50);
    }
    color("darkgray")
    translate([-5.5,-4,6])
    {
        sphere(6.5);
    }
}
}
module Tail(){
    union(){
    color("black")
    translate([0,-3,0])
    {
            rotate([0,0,0])
            for(i = [ [ 0,  54,  10],
            [0, 56, 12],
            [0, 58, 14],
            [0, 60, 16],
            [0, 62, 18],
            [0, 64, 20],
            [0, 66, 22],
            [0, 68, 24],
            [0, 66, 26],
            [0, 64, 28],
            [0, 62, 30],
            [0, 60, 32],
            [0, 62, 34],
            [0, 64, 36],
            [0, 66, 38],
            [0, 68, 40],
            [0, 66, 42],
            [0, 64, 44],
            [0, 62, 46],
            [0, 60, 48],
            [0, 62, 50],
            [0, 64, 52],
            [0, 66, 54],
            [0, 68, 56],
            [0, 70, 58] ])
            {
                translate(i)
                resize([12,12,12])
                sphere(100, center = true);
            }

    }
}
}
module Tail2(){
    union(){
    color("black")
    translate([0,-3,0])
    {
            rotate([0,0,0])
            for(i = [ [ 0,  54,  10],
            [0, 56, 12],
            [0, 56, 14],
            [0, 56, 16],
            [0, 56, 18],
            [0, 56, 20],
            [0, 56, 22],
            [0, 56, 24],
            [0, 56, 26],
            [0, 56, 28],
            [0, 56, 30],
            [0, 56, 32],
            [0, 56, 34],
            [0, 56, 36],
            [0, 56, 38],
            [0, 56, 40],
            [0, 56, 42],
            [0, 56, 44],
            [0, 56, 46],
            [0, 56, 48],
            [0, 56, 50],
            [0, 56, 52],
            [0, 56, 54],
            [0, 56, 56],
            [0, 56, 58] ])
            {
                translate(i)
                resize([12,12,12])
                sphere(100, center = true);
            }

    }
}

}
    if (parts_to_render == 1) {
		translate([10,80,5])    rotate([90,0,0])      L();
		translate([-10,80,5])    rotate([90,0,0])      R();
        translate([10,60,-80])    rotate([0,0,0])      L2();
		translate([-10,60,-80])    rotate([0,0,0])      R2();
	}
	if (parts_to_render == 2) {
		translate([0,0,-50])                         Head();
	}
	if (parts_to_render == 3) {
        translate([0,0,0])                         Body();
		translate([0,0,0])                           Back_Leg();
	}
	if (parts_to_render == 4) {
        translate([0,-50,0]) rotate([-72.5,0,0])     Front_Leg();
	}
	if (parts_to_render == 5) {
		translate([35,60,5]) rotate([0,90,180])     Tail();
		translate([35,80,5]) rotate([0,90,180])     Tail2();
    }
    if (parts_to_render == 6) {
		translate([-10,-10,5])    rotate([90,0,0])      R();
		translate([10,-10,5])    rotate([90,0,0])       L();
        translate([-50,-10,5])    rotate([90,0,0])      R2();
		translate([-90,-10,5])    rotate([90,0,0])       L2();
        translate([0,100,-50])                          Head();
		translate([0,0,0])                              Body();
		translate([0,0,0])                              Back_Leg();
		translate([0,-50,0]) rotate([-72.5,0,0])        Front_Leg();
		translate([35,130,5]) rotate([0,90,180])        Tail();
        translate([-30,120,5]) rotate([0,90,180])       Tail2();
	}
    if (parts_to_render == 7) {

        if (ears_to_choose == 1){
            L();
            R();
        }

        if (ears_to_choose == 2){
            L2();
            R2();
        }

        Head();
        Body();
        Back_Leg();
        Front_Leg();

        if (tail_to_choose == 1) {
            Tail();

        }

        if (tail_to_choose == 2) {
            Tail2();

        }

    }

```


[User]
Okay, I'd like to design a parametric 3D model of a ghost for Halloween, and I'd like it to be customizable for size and quality. I have some general ideas and parameters I'd like included. I'm thinking it should be a relatively simple design that doesn't need supports for printing.

Specifically, I want a ghost that has a rounded body, kind of like a dome or a stretched sphere, with a more defined bottom edge. It should have two eyes, a mouth, and some small teeth. Also, I want two little hands that are attached, almost like they're waving or reaching out. The model should be built such that I can customize the overall size easily, and I want to be able to render it at a lower resolution for previewing, and a higher resolution for final production.

I'm imagining parameters like "Project_Size" to control the approximate assembled height of the ghost and "Render_Quality" to change the detail level. It should also have some kind of parameter where I can choose to render only certain parts like just the body, or just a hand. I was also thinking about having a "bodywithhole" option that would put holes in the body for the eyes, mouth, and "floating" supports. There should also be a "modelview" option to show the entire model assembled.

I want all of these parts to be unioned together when displayed as one piece. The eyes should be spheres, the hands should be a sphere with a tapered cylinder, and the teeth are small cylinders. The body is a sphere with the bottom cut off, and the floating supports are made using cylinders. The mouth is just a box. I'd like to keep all dimensions in millimeters.

Could you generate the OpenSCAD files for this design? I don't need any custom libraries, just the base OpenSCAD functionality.

[Assistant]
JY-Ghost-3.1.7.scad:
```
// James Yang
// Ghost

// The parameters below may be changed by the customizer
//
// BEGIN CUSTOMIZER

/* [Ghost] */

//select part(s) to render
part_to_render = 5; //[1:body, 2:hand, 3:teeth, 4:bodywithhole, 5:modelview]

//Draft for preview, prduction for final
Render_Quality = 60; //[24:Draft,60:production]

//approx. height when assembled, mm
Project_Size = 100; // [65:125]

// END CUSTOMIZER

//
// The parameters below are not meant to be changed by the customizer

$fn = Render_Quality;

module eyes(){
    scale([1.5,1,1])sphere(8,center = true);
}
// eyes for the ghost

module body(){
    union(){
        translate([0,0,75])sphere(30,center = true);
        difference(){
            translate([0,0,75])translate([0,0,-37.5])cylinder(r1=30,r2=30,h=75, center = true);
            scale([1,1,0.8])sphere(30,center = true);
        }

    }
}
// the body for the ghost

module hand(){
    union(){
        sphere(5,center = true);
        translate([0,0,-15])cylinder(r1=10,r2=5,h=30,center = true);
    }
}
// the hand for the ghost

module mouth() {
      cube([23,40,10]);
}

module teeth() {
     cylinder(r1 = 1, r2 = 3,h = 10,center = true);
}

module bodywithhole() {
     rotate([0,0,-150]) union(){
    difference(){
        scale([1.1,1.1,0.9])body();
        translate([25,18,75])rotate([0,0,90])eyes();
        translate([25,-18,75])rotate([0,0,90])scale([1.5,1.5,1.5])eyes();

        for(d = [0:45:360]){
            rotate([0,0,d])translate([33,0,0])rotate([0,90,0])scale([1,1,0.5])cylinder(r1=8,r2=8,h=30,center = true);

        // make it looks like floating

        translate([10,-20,45])mouth();

    }
}
    for(d = [0:45:360]){
     rotate([0,0,d + 22.5])translate([ 32,0,1]) cylinder(r = 8,h = 2, center = true);
    }
}
}

scale([Project_Size/scale_factor, Project_Size/scale_factor, Project_Size/scale_factor]) {

	if (part_to_render == 1) {
		body();
	}
	if (part_to_render == 2) {
		hand();
	}
	if (part_to_render == 3) {
		teeth();
	}

    if (part_to_render == 4) {
		bodywithhole();
	}

	if (part_to_render == 5) {
		modelview();
        rotate([0,0,-150]) union(){
    difference(){
        scale([1.1,1.1,0.9])body();
        translate([25,18,75])rotate([0,0,90])eyes();
        translate([25,-18,75])rotate([0,0,90])scale([1.5,1.5,1.5])eyes();

        for(d = [0:45:360]){
            rotate([0,0,d])translate([33,0,0])rotate([0,90,0])scale([1,1,0.5])cylinder(r1=8,r2=8,h=30,center = true);

        // make it looks like floating

        translate([10,-20,45])mouth();

    }
}
    for(d = [0:45:360]){
     rotate([0,0,d + 22.5])translate([ 32,0,1]) cylinder(r = 8,h = 2, center = true);
    }
    translate([28,-10,50]) teeth();
    translate([28,10,50]) teeth();
    translate([5,40,50])rotate([-55,0,0])hand();
    translate([5,-40,50])rotate([55,0,0])hand();
    // make everything union together

}
	}
}
// end scale

```
JY-Ghost-without_customizer.scad:
```
// James Yang
// Ghost

$fn = 60;

module eyes(){
    scale([1.5,1,1])sphere(8,center = true);
}
// eyes for the ghost

module body(){
    union(){
        translate([0,0,75])sphere(30,center = true);
        difference(){
            translate([0,0,75])translate([0,0,-37.5])cylinder(r1=30,r2=30,h=75, center = true);
            scale([1,1,0.8])sphere(30,center = true);
        }

    }
}
// the body for the ghost

module hand(){
    union(){
        sphere(5,center = true);
        translate([0,0,-15])cylinder(r1=10,r2=5,h=30,center = true);
    }
}
// the hand for the ghost

module mouth() {
      cube([23,40,10]);
}

module teeth() {
     cylinder(r1 = 1, r2 = 3,h = 10,center = true);
}

union(){
    difference(){
        scale([1.1,1.1,0.9])body();
        translate([25,18,75])rotate([0,0,90])eyes();
        translate([25,-18,75])rotate([0,0,90])scale([1.5,1.5,1.5])eyes();

        for(d = [0:45:360]){
            rotate([0,0,d])translate([33,0,0])rotate([0,90,0])scale([1,1,0.5])cylinder(r1=8,r2=8,h=30,center = true);

        // make it looks like floating

        translate([10,-20,45])mouth();

    }
}
    for(d = [0:45:360]){
     rotate([0,0,d + 22.5])translate([ 32,0,1]) cylinder(r = 8,h = 2, center = true);
    }
    translate([28,-10,50]) teeth();
    translate([28,10,50]) teeth();
    translate([5,40,50])rotate([-55,0,0])hand();
    translate([5,-40,50])rotate([55,0,0])hand();
    // make everything union together

}

```


[User]
Hey, I'm looking to design a customizable shock absorber for 3D printing. I've been messing around with some basic code, but I'd like a much more flexible and robust design.

Specifically, I need a shock absorber that has a cylindrical base and top, connected by a spiral "spring" section. The spiral should be created by two helical extrusions that are then cut to form the shock absorber.  I want to be able to adjust the following parameters:

*   **Cylinder Radius:** The overall radius of the cylindrical parts of the shock absorber.
*   **Cylinder Height:** The height of each of the cylindrical sections (top and bottom).
*   **Overall Height:** The total height of the assembled shock absorber.
*   **Spiral Pitch:** The vertical distance between each turn of the spiral.
*  **Spiral Thickness**: The thickness of the material used to create the spiral. I would like to control the amount the material protrudes from the cylindrical section.
*   **Internal Diameter**: I want the ability to adjust the inside diameter of the spiral cut.

I'd also like to be able to change the number of spirals. I realize the number of spirals will be dependent on the total height, spiral pitch and the cylinder height. It would be good to have a parameter to control the number of spirals directly. The "overall height" can then be a dependent parameter, calculated by the AI.

Essentially, I want a robust, parametric model that I can tweak to get different shock absorber characteristics, instead of just a basic spiral that I've got now.

Could you generate the OpenSCAD code for this? I'd like it to be reasonably efficient. I'm also looking to be able to use it to print functional parts, so I'd prefer that the generated design be as watertight as possible.

[Assistant]
shock_absorber.scad:
```
//Pitch of the spiral
pitch = 2;

//Radius of the cylinder
radius = 15;

//Height of the cylinder
height = 30;

//Spiral Thickness
sp = 1.75;

thickness = radius*.7;

cylinder(h=height/10,r=radius,c=true);
translate([0,0,height]){
    cylinder(h=height/10,r=radius,c=true);
}

translate([0,0,height/10]){
    difference(){
        //Create The spiral
        linear_extrude(height*(9/10), center = false, convexity = 10, twist = pitch*100)
        translate([radius-thickness/2, 0, 0]){
        circle(r = thickness);}
        //Cut out the inside
        cylinder(h=height,r=radius-sp,c=false);
        //Cut out the outside
        difference(){
            cylinder(h=height,r=2*radius,c=false);
            cylinder(h=height,r=radius,c=false);
        }
    }

}

translate([0,0,height/10]){
    difference(){
        //Create The spiral
        linear_extrude(height*(9/10), center = false, convexity = 10, twist = pitch*100)
        translate([-(radius-thickness/2), 0, 0]){
        circle(r = thickness);}
        //Cut out the inside
        cylinder(h=height,r=radius-sp,c=false);
        //Cut out the outside
        difference(){
            cylinder(h=height,r=2*radius,c=false);
            cylinder(h=height,r=radius,c=false);
        }
    }

}

```


[User]
Hey, I'm working on a project that uses a TowerPro MG955 servo, and I need a parametric model of it for my OpenSCAD designs. I've got some basic parameters in mind, but I'd like a robust and flexible model.

Here's what I need:

**Core Servo Body:**

*   The main body should be a box with dimensions that are adjustable: `body_x`, `body_y`, `body_z`.
*   It should have two screw mounting brackets on opposite sides, which can be adjusted for position along the y-axis: `bracket_y_offset`. These brackets should include mounting holes, which should also have a parametric diameter and position `screw_hole_diameter` and `screw_hole_offset_y` respectively, as well as having parametric height `bracket_z`.
*   There should be a central hub at the top of the body with a parametric height `hub_z` and diameter `hub_diameter`, with a smaller diameter, raised cylinder on top of the central hub, which also has parametric diameter and height `raised_hub_diameter` and `raised_hub_z`. I'd also like to be able to change the height of the base part of the hub with `base_hub_z`.
*   There's also a rectangular raised section near the front of the body with parametric width, length, and height: `front_rect_x`, `front_rect_y`, `front_rect_z`.
*   I need to be able to control the radius of the fillet on the top edge of the main body with a variable `body_fillet_radius`.

**Torque Arm:**

*   The servo needs to have an optional torque arm. This arm can be either a round mount, have no arms, or have a number of arms specified by the parameter `arm_count`.
*   If `arm_count` is `-1`, it should be a round torque mount with a central cylinder and four mounting holes. The center cylinder should have adjustable height and diameter `torque_mount_center_height` and `torque_mount_center_diameter`. The four mounting holes should have adjustable diameter and position `torque_mount_hole_diameter` and `torque_mount_hole_radius`.
*   If `arm_count` is `0`, no torque arm or mount should be generated.
*   If `arm_count` is greater than `0`, a torque arm with `arm_count` arms should be generated. Each arm should connect to the central hub with a cylinder, and then should have a tapered arm. The connecting cylinder should have parametric diameter and height `arm_cylinder_diameter` and `arm_cylinder_height`. The tapered arms should have parametric length and end diameter `arm_length` and `arm_end_diameter`. They should also have an adjustable height `arm_height`. I'd like to have small cutouts in each arm, defined by a number of cutouts `cutout_count`, a distance from center `cutout_distance` and a diameter `cutout_diameter`.

**Wire Terminal:**

*   Finally, there should be a rectangular wire terminal block on one side of the servo body with adjustable size parameters `terminal_x`, `terminal_y`, and `terminal_z`.
*   This terminal block should have a smaller, raised section on it, also rectangular with parameters `terminal_raised_x`, `terminal_raised_y`, and `terminal_raised_z`. This should be on one end of the main wire terminal, and be centered within that end.
* I'd like to be able to specify the offset of the wire terminal in the x and y directions relative to the origin of the main body with `terminal_x_offset` and `terminal_y_offset`

I think that's about it! I want to be able to adjust all of these parameters so I can use the model in different projects. It would also be ideal if everything was in a single file if possible. Can you generate the necessary OpenSCAD code?

[Assistant]
Servodummy.scad:
```
////Set arms to -1 for round torque mount, 0 for nothing, 1... for number of arms
arms = 6;
$fn=360;
// TowerPro MG955 Servo dummy
module screwBracket(){
//screwBracket
	difference(){
		union(){
			minkowski(){
				cube([5.25,17,1]);
				translate([1,1,0]) cylinder(h=1.5, d=2);
				}
			cube([5.25,19,2.5]);
			rotate([0,10,0]) translate([-1.4,9,1.7]) cube([8,1,2]);
			}
		//srewHoles
		union() {
			translate([4.25,4.3,-1])  cylinder(h=4, d=4.5);
			translate([4.25,14.8,-1])  cylinder(h=4, d=4.5);
			translate([5,3,-1]) cube([2.5,2.5,4]);
			translate([5,13.5,-1]) cube([2.5,2.5,4]);

			}
		}
}
module TorqueArm(arms) {
    color("Silver"){
        if (arms==-1)
            TorqueMount();
        if (arms>0)
        for(angle=[0:360/arms:360])
            rotate([0,0,angle])
        difference() {
            union() {
                cylinder(h=4.7,d=8);
                hull() {
                    translate([0,0,2.7]) cylinder(h=2, d=13);
                    translate([17.0,0,2.7]) cylinder(h=2, d=6);
                }
            }
            for(i=[16:-3:5]) {
                translate([i,0,-10]) cylinder(h=20, d=1);
            }
            translate([0,0,3.3])cylinder(h=5,d=6);
        }

    }
}
module TorqueMount(){
// torque mount
		color("Silver"){
			difference(){
				union(){
					translate([0,0,2.7]) cylinder(h=2, d=20);
					cylinder(h=4.7, d=9);
				}
				translate([0,0,-1])cylinder(h=8, d=4.5);
				translate([7,0,2]) cylinder(h=4,d=3);
				rotate([0,0,90]) translate([7,0,2]) cylinder(h=4,d=3);
				rotate([0,0,180]) translate([7,0,2]) cylinder(h=4,d=3);
				rotate([0,0,270]) translate([7,0,2]) cylinder(h=4,d=3);
			}
		}
}
module WireTerminal(){
		//wireTerminal
	color("DimGray",1){
		translate([40,6.5,4]) cube([5,7,4]);
		}
		color("Red",1){
			translate([40,7.5,5.5]) cube([7,5,1]);
		}

}
module ServoMainPart(arms){
	color("DimGray",1){
		//mainpart
		cube([40.5,20,36.5]);
		translate([40.5,0.5,28]) screwBracket();
		rotate([0,0,180]) translate([0,-19.5,28])  screwBracket();
		translate([10,10,36.5]) cylinder(h=2, d=19);
		translate([10,10,38.5]) cylinder(h=1, d=13);
		translate([10,10,39.5]) cylinder(h=0.5, d=11);
		translate([14,1.5,36.5]) cube([21,17,2]);
		}
		//torqueConnector
		color("Gold",1){
			translate([10,10,40]) cylinder(h=4.5, d=5);
		}
	//silver torque disc
	//translate([10,10,40.5]) TorqueMount();
    translate([10,10,40.5]) TorqueArm(arms);
	//red wire terminal
	rotate([0,0,180]) translate([-42,-20,0]) WireTerminal();
}
// END SERVODUMMY
ServoMainPart(arms);
```


[User]
Okay, I'm looking to create a parametric OpenSCAD design for a lazy susan spool holder. I've got a specific 4" square lazy susan bearing I'm using, but I want it to be customizable for other bearings too. I want the design to have two main parts: a base plate that attaches to the bearing, and a hub that attaches to the base plate and holds the spool.

Here are the details for the base plate:

*   **Bearing Attachment:** The base plate needs to screw onto the bearing using M4 screws. My specific bearing has screw holes that are 90.5mm apart, and the holes are about 4mm in diameter. I'll need nut traps for the M4 nuts on the bottom. The bearing itself is about 101.5mm square, though that's probably not as important as the screw hole distance. The bearing has a large center bore that is 56.7mm in diameter. I need a plate that accounts for the thickness of an M4 nut on the bottom and also has a little extra thickness for the plate itself, probably 2mm on top of the nut height. Let's make the base plate thickness customizable, but with that 2mm minimum thickness.
*   **Arms:** I want the base plate to have arms that extend from the center to the screw holes, like spokes. Let's use rectangular arms for simplicity and to use less plastic. The arms need a vertical part that extends from the top surface to the bottom surface of the baseplate. Each arm should have a nut trap at the outer end for the M4 screws that secure it to the bearing.  Make it so these nut traps are partially a slot extending inwards towards the center of the plate a bit, so I can adjust for up to about 2% shrinkage from ABS.  I want to be able to customize the number of arms or "spokes."
*   **Center:** The center of the base plate should be a cylinder with a diameter to fit snugly around that bearing's center bore. It should also have some "spokes" that extend from this central hub for additional support. I want to control the number of these support spokes via a parameter.  Make these tapered. These support spokes should have a screw hole in the center that's counterbored to hold an M4 screw.

For the spool hub:

*   **Spool Bore:** This needs to fit inside the bore of a spool.  My primary spool's bore is about 52mm. The hub needs to have a cylindrical section that fits this bore, with a customizable depth. I want a 15mm depth for my first version.
*   **Attachment:**  It needs to attach to the base plate with an M4 screw in the center. So, it needs a nut trap on the bottom and a screw hole on top.
*   **Spokes/Support:** I'd like some spokes on the underside, again for support. Similar to the baseplate design, let's allow for controlling the number of spokes on the hub. Also like the baseplate, the hub spokes should have a slot or tapered shape where it meets the cylindrical section.

General Parameters I want to customize:

*   `Thickness`: Thickness of walls, arms, etc.
*   `quality`: Number of segments used to make circles, so I can make them higher or lower res.
*   `tolerances`:  Something I can add to screw dimensions so they're not too tight.
*   `compensate`: A fudge factor that is multiplied with measurements like the arm length to compensate for shrinkage.
*   `m4`: Diameter of an M4 screw
*   `m4_nut`: Diameter of an M4 nut (corners)
*   `m4_nut_sides`: Diameter of an M4 nut (sides)
*   `m4_nut_height`: Thickness of an M4 nut
*   `m4_screw_head`: Diameter of an M4 screw head (same as a nut for simplicity)
*   `ScrewHoleDistance`:  Distance between screw holes on the bearing.
*   `ScrewHoleDiameter`: Diameter of the screw holes on the bearing.
*  `BearingPlateSide`: Side length of the lazy susan bearing plate.
*   `CenterBoreDiameter`: Diameter of the center hole of the bearing.
*   `PlateThickness`: Total thickness of the base plate.
*   `ArmLength`: Length of the arms from the center.
*   `spokes`: The number of support spokes for the center of both parts.
*   `SpoolBoreDiameter`: The diameter of the spool bore.
*   `SpoolBoreDepth`: The depth the hub goes into the spool bore.

Also, please include comments so that the code is easy to read and modify. I'm not using any libraries so you can just write it all out in one or two files.

Could you design this as a parametric OpenSCAD file, or maybe a couple of them if that's easier?

[Assistant]
LazySpool2.scad:
```
 /*
This is to make a half-spool holder to screw onto a Lazy Susan bearing.
This lazy Susan bearing I'm using is the 4" square from ACE Hardware.
(http://www.acehardware.com/product/index.jsp?productId=3463597&KPID=976647&kpid=976647&pla=pla_976647)
You can adjust to your liking via the parameters.

Improvements from v1 to v2:
- Simpler geometry. No more weird circle cut-outs. Rectangle arms and a circle hub. This also should save more plastic!
- Different spool bore adapter. Should save plastic. And screws.

-Phat Justice
*/

//arbitrary dimensions
Thickness = 2; //Thicknesses of walls, etc.
quality=36; //"Roundness" of circles.
tolerances = 0.15; //Something to add for shrinkage
compensate = .02; //multiplier "fudging" constant for ABS shrinkage compensation

//M4 screw dimensions
m4 = 4 + (2 * tolerances); //diameter of an M4 screw shaft
m4_nut = m4 * 2; //This is the diameter for a six-sided nut (corners)
m4_nut_sides = m4 * 1.6; //This is the diameter of a 6-sided nut (sides)
m4_nut_height = m4 * 0.8; //Thickness of a typical M4 nut.
m4_screw_head = m4_nut; //Same as an M4 nut, but with more polygons/sides.

//The Lazy Susan bearing dimensions
ScrewHoleDistance = 90.5;
ScrewHoleDiameter = 4 + tolerances;
BearingPlateSide = 101.5; //not necessary... but whatevz.
CenterBoreDiameter = 56.7; //That huge hole in the middle of the bearing
PlateThickness = m4_nut_height + Thickness; //Thickness of the bottom plate with the 10mm m3 Screw
ArmLength = sqrt(2 * (ScrewHoleDistance/2 * ScrewHoleDistance/2));
spokes = 3; //the number of spokes!

//The spool dimensions
SpoolBoreDiameter = 52; // ---IC3D Spool--- it's actually 52.3-ish, but WHATEVZ.
SpoolBoreDepth = 15; //how far to go into the spool's bore.

adapter_plate();
translate([0,0,PlateThickness])
{
    spool_adapter();
}//end of translate

module adapter_plate()  {

	difference()
	{
		union()
		{
			//Center of the adapter plate
			cylinder(r=CenterBoreDiameter/2 + Thickness, h=PlateThickness, $fn=quality);

            //Arms
            for (i = [0:4])
            {
                rotate([0,0,45+i*90])
                {
                    translate([-((m4_nut_sides/2) + Thickness),0,0]) //The base arm
                        cube([m4_nut_sides + (Thickness * 2), ArmLength, Thickness]);
                    translate([-(Thickness/2),0,0]) //The vertical vane of the arm
                        cube([Thickness, ArmLength, PlateThickness]);
                    translate([0,ArmLength,0])
                        rotate([0,0,90])
                            hull()
                            {
                                cylinder(r=(m4_nut/2)+Thickness, h=PlateThickness, $fn=6);
                                translate([ArmLength*compensate,0,0])
                                    cylinder(r=(m4_nut/2)+Thickness, h=PlateThickness, $fn=6);
                            }//end of hull

                }//end of rotate
            }//end of for loop
		}//end of union

	//NOW TO REMOVE STUFFFFFF...
		//The four nut traps...
		for (i = [0:3])
		{
			rotate ( [0,0,45+(i*90)] )
			{
	            //Screw Holes to mount plate to bearing
				translate ( [0, ArmLength, 0] )
				{
                    hull()
                    {
                        cylinder ( r=ScrewHoleDiameter/2, h=PlateThickness, $fn=quality );
                        translate([0, ArmLength*compensate, 0])
                            cylinder ( r=ScrewHoleDiameter/2, h=PlateThickness, $fn=quality );
                    }//end of hull

	                //Nut traps
	                translate ([0,0,PlateThickness - m4_nut_height])
                        hull()
                        {
                            rotate([0,0,-90])
                                cylinder (r=m4_nut/2, h=m4_nut_height, $fn=6);
                            translate([0,ArmLength * compensate,0])
                                rotate([0,0,-90])
                                    cylinder (r=m4_nut/2, h=m4_nut_height, $fn=6);
                        }//end of hull
				}//end of translate
			}//end of rotate
		}//end of for loop

        //Hollow out the center to save plastic!
        difference()
        {
            cylinder(r=(CenterBoreDiameter/2)-Thickness, h=PlateThickness); //This is the big hole
            union()
            {
                for (i=[0:(spokes-1)])
                {
                    difference()
                    {
                        rotate ([0,0,i*(360/spokes)])
                        {
                            hull() //making tapered spokes
                            {
                                cylinder(r=m4/2 + Thickness, h=PlateThickness, $fn=quality);
                                translate([(CenterBoreDiameter/2)+(Thickness)-(m4/2),0,0])
                                {
                                    cylinder(r=m4/2, h=PlateThickness, $fn=quality);
                                }//end of translate
                            }//end of hull
                        }//end of rotate
                        cylinder(r=m4/2, h=PlateThickness, $fn=quality); //the center screw hole
                    }//end of difference
                }//end of for loop
            }//end of union
        }//end of difference
	}//end of difference
}//end of adapter_plate

module spool_adapter()
{
    difference()
    {
        //Creating the dimensions of the spool adapter
        union()
        {
            cylinder(r=SpoolBoreDiameter/2, h=SpoolBoreDepth, $fn=quality);
        }//end of union

        //saving plastic, but leave something for the nut trap.
        difference()
        {
            cylinder(r=(SpoolBoreDiameter/2) - Thickness, h=SpoolBoreDepth, $fn=quality);
                //The main LARGE hole in the center.
            //Spokes!
            cylinder(r=(m4_nut/2)+Thickness, h=PlateThickness, $fn=quality);
                    //The material for the center nut trap... a "hub."
            difference()
            {
                for (i = [0:spokes-1])
                {
                    rotate([0,0,i*360/spokes])
                        translate([-Thickness/2,0,0])
                            cube([Thickness,SpoolBoreDiameter,SpoolBoreDepth]);
                }//end of for loop
                translate([0,0,PlateThickness])
                    //Cutting out plastic again. This makes the spokes like a "funnel."
                    //This unfortunately probably doesn't help save any plastic. :-(
                    cylinder(r1=(m4_nut/2)+Thickness, r2=(SpoolBoreDiameter/2)-Thickness, h=SpoolBoreDepth-PlateThickness);
            }//end of difference
        }//end of difference

        cylinder(r=m4/2, h=PlateThickness, $fn=quality);
            //screw hole
        translate([0,0,PlateThickness-m4_nut_height])
            cylinder (r=m4_nut/2, h=m4_nut_height, $fn=6);
                //The actual nut trap

    }//end of difference
}//end of spool_adapter

```


[User]
I'd like to design a parametric ghost figure in OpenSCAD. It should have a few options for customization.

First, the base of the ghost will be a rounded, flowing shape, kind of like a typical cartoon ghost. The body should transition from a wider base to a narrower top, with some wavy protrusions along the lower edge to simulate fabric. It should have a flat bottom for easy printing.

Then, I want to add some features. I'd like to have the option to include a bow tie, a cape, and teeth, each toggled with a simple "yes" or "no" parameter. For the face, I want a dropdown menu to select from five different expressions: "Normal", "Happy", "Sad", "Dumb", and "Scary". The eyes will be simple spheres. The mouth should be different shapes depending on the facial expression. For Happy, it should be a wide, curved shape. For Normal, a less wide, almost oval shape. Sad will be an inverted curve, Dumb will be a more circular mouth, and Scary will have a sharper, slightly angled mouth shape. When teeth are selected, they will appear in the mouth. They should be simple block shapes. If supports are enabled they should extend from the teeth into the mouth. The bow tie should be positioned under the head. The cape should drape from the shoulders, down to the base, and can be simple, but should be able to be rendered as a "cloth" like material. The cape should be behind the main ghost shape, and should be a deep red color.

I'll also need a way to scale the whole thing uniformly, and control the render resolution. Finally, there should be a parameter that allows me to choose whether I want to export the whole ghost or just the bow tie.

I don't need any external libraries. Could you provide the OpenSCAD file(s) for this?

[Assistant]
Ghost-CR_3.0.scad:
```
/* [Parts] */
Facial_Expression = "Normal";//[Normal,Happy,Sad,Dumb,Scary]
Bow_Tie = "Yes";//[Yes,No]
Teeth = "Yes";//[Yes,No]
Cape = "Yes";//[Yes,No]
/* [Final] */
Part = "Whole";//[Whole,Bow_Tie,Ghost]
Supports = "Yes";//[Yes,No]
Render_Resolution = 50;//[10:200]
Scale = 1;//[0.25:0.25:4]
// preview[view:south, tilt:topdiagonal]
$fn = Render_Resolution;

scale([Scale,Scale,Scale]){
union(){
    if(Part == "Whole" || Part == "Ghost"){
        difference(){
            color("white"){
                union(){

                    hull(){                     //Head
                        translate([0,0,70]){
                            sphere(r=25,center=true);
                        }
                        translate([0,0,45]){
                            cylinder(h=1,r=21,center=true);
                        }
                    }

                    translate([0,0,27.5]){      //Body
                        cylinder(h=55,r1=25,r2=21,center=true);
                    }

                    rotate([0,0,270]){         //Protruding Waves in cloth
                        for(i = [45:45:315]){
                            rotate([0,-5.1,,i]){
                                translate([22,0,20]){
                                    cylinder(h=80,r=6,center= true);
                                    /*scale([1,1,10]){
                                       sphere(r=6);
                                    }*/
                                }
                            }
                        }
                    }
                    /*translate([0,-19,20]){
                        rotate([0,-8.5,-90]){
                            cylinder(h=40,r=6,center=true);
                        }
                    }*/
                }
            }

            union(){
                translate([0,0,-49.5]){     //makes flat bottom
                    color("white"){
                        cube([100,100,100],center=true);
                    }
                }

                if(Bow_Tie == "Yes"){
                    translate([0,-17,42]){
                        rotate([86,0,0]){
                            cylinder(h=10, r=2.8, center=true);
                        }
                    }
                }

                translate([10,-22,70]){     //eye
                    color("dimgrey"){
                        sphere(r=5);
                    }
                }
                translate([-10,-22,70]){    //other eye
                    color("dimgrey"){
                        sphere(r=5);
                    }
                }

                if(Facial_Expression == "Happy"){
                    translate([0,-25,60]){ //mouth if Happy
                        color("dimgrey"){
                            rotate([0,0,0]){
                                difference(){
                                    sphere(r=10);
                                        translate([0,0,20]){
                                            sphere(r=20);
                                    }
                                }
                            }
                        }
                    }
                }

                if(Facial_Expression == "Normal"){
                    translate([0,-25,60]){  //mouth if Normal
                        color("dimgrey"){
                            rotate([0,0,0]){
                                difference(){
                                    sphere(r=10);
                                        translate([0,0,10]){
                                            sphere(r=15);
                                    }
                                }
                            }
                        }
                    }
                }

                if(Facial_Expression == "Sad"){
                    translate([0,-25,51]){  //mouth if Sad
                        color("dimgrey"){
                            rotate([0,180,0]){
                                difference(){
                                    sphere(r=10);
                                        translate([0,0,8]){
                                            sphere(r=15);
                                    }
                                }
                            }
                        }
                    }
                }

                if(Facial_Expression == "Dumb"){
                    translate([0,-25,60]){  //mouth if Dumb
                        color("dimgrey"){
                            rotate([0,0,0]){
                                difference(){
                                    sphere(r=10);
                                        translate([0,0,14]){
                                            sphere(r=15);
                                    }
                                }
                            }
                        }
                    }
                }

                if(Facial_Expression == "Scary"){
                    translate([0,-25,58]){  //mouth if Scary
                        color("dimgrey"){
                            rotate([0,0,0]){
                                difference(){
                                    scale([1,1,1.2]){
                                        sphere(r=6.5);
                                    }
                                }
                            }
                        }
                    }
               }
          }

                rotate([0,0,270]){          //cutout parts of cloth
                    color("white"){
                       for(i = [22.5:45:337.5]){
                           rotate([0,-2,i]){
                               translate([26,0,17]){
                                   /*scale([1,1,10]){
                                       sphere(r=5);
                                   }*/
                                   translate([0,0,30]){
                                       sphere(r=4.4,center=true);
                                   }
                                   cylinder(h=60,r=4.4,center=true);
                               }
                           }
                       }
                   }
                }
            }

        if(Facial_Expression == "Happy"){
            translate([0,-17,70]){          //eyeballs if Happy
                translate([10,0,0]){
                    color("black"){
                        sphere(r=3.5);
                    }
                }
                translate([-10,0,0]){
                    color("black"){
                        sphere(r=3.5);
                    }
                }
            }

            if(Teeth == "Yes"){
                translate([0,-20,61.5]){   //teeth if Happy
                    translate([-4.5,0,0]){
                        color("black"){
                            scale([1,1,2]){
                                rotate([0,45,-8]){
                                    cube([3,3,3],center=true);
                                }
                            }
                        }
                    }
                    translate([4.5,0,0]){
                        color("black"){
                            scale([1,1,2]){
                                rotate([0,45,8]){
                                    cube([3,3,3],center=true);
                                }
                            }
                        }
                    }
                }
                if(Supports == "Yes"){
                    translate([-4.5,-20.8,54.4]){
                        cylinder(h=6.1,r=0.6,center=true);
                    }
                    translate([4.5,-20.8,54.4]){
                          cylinder(h=6.1,r=0.6,center=true);
                    }
                    translate([0,-22.2,56]){
                        rotate([10,0,0]){
                            cylinder(h=12,r=0.6,center=true);
                        }
                    }
                }
            }
        }

        if(Facial_Expression == "Normal"){
            translate([0,-17,70]){          //eyeballs if Normal
                translate([10,0,0]){
                    color("black"){
                        sphere(r=3);
                    }
                }
                translate([-10,0,0]){
                    color("black"){
                        sphere(r=3);
                    }
                }
            }

            if(Teeth == "Yes"){
                translate([0,-20.1,57]){    //teeth if Normal
                    translate([-4.5,0,0]){
                        color("black"){
                            scale([1,1,2]){
                                rotate([-5	,45,-10]){
                                    cube([3,3,3],center=true);
                                }
                            }
                        }
                    }
                    translate([4.5,0,0]){
                        color("black"){
                            scale([1,1,2]){
                                rotate([5,45,10]){
                                    cube([3,3,3],center=true);
                                }
                            }
                        }
                    }
                }
                if(Supports == "Yes"){
                    translate([-4.5,-21,52.4]){
                        cylinder(h=1.2,r=0.5,center=true);
                    }
                    translate([4.5,-21,52.4]){
                          cylinder(h=1.2,r=0.5,center=true);
                    }
                    translate([0,-21.8,53]){
                          rotate([10,0,0]){
                            cylinder(h=5.5,r=0.5,center=true);
                          }
                    }
                }
            }
        }

        if(Facial_Expression == "Sad"){
            translate([0,-17,68.5]){        //eyeballs if Sad
                translate([9.5,0,0]){
                    color("black"){
                        sphere(r=2.5);
                    }
                }
                translate([-9.5,0,0]){
                    color("black"){
                        sphere(r=2.5);
                    }
                }
            }

            if(Teeth == "Yes"){
                translate([0,-20.8,60.7]){    //teeth if Sad
                    translate([-4,0,0]){
                        color("black"){
                            scale([1,1,2]){
                                rotate([0,45,-8]){
                                    cube([3,3,3],center=true);
                                }
                            }
                        }
                    }
                    translate([4,0,0]){
                        color("black"){
                            scale([1,1,2]){
                                rotate([0,45,8]){
                                    cube([3,3,3],center=true);
                                }
                            }
                        }
                    }
                }
            }
        }

        if(Facial_Expression == "Dumb"){
            translate([0,-17,68]){          //eyeballs if Dumb
                translate([8,0,0]){
                    color("black"){
                        sphere(r=2);
                    }
                }
                translate([-8,0,0]){
                    color("black"){
                        sphere(r=2);
                    }
                }
            }

            if(Teeth == "Yes"){
                translate([0,-20.5,61]){    //teeth if Dumb
                    translate([-4.5,0,0]){
                        color("black"){
                            scale([1,1,2]){
                                rotate([0,45,-8]){
                                    cube([3,3,3],center=true);
                                }
                            }
                        }
                    }
                    translate([4.5,0,0]){
                        color("black"){
                            scale([1,1,2]){
                                rotate([0,45,8]){
                                    cube([3,3,3],center=true);
                                }
                            }
                        }
                    }
                }
                if(Supports == "Yes"){
                    translate([-4.5,-21.2,54.3]){
                        rotate([5,0,0]){
                            cylinder(h=5.4,r=0.5,center=true);
                        }
                    }
                    translate([4.5,-21.2,54.3]){
                        rotate([5,0,0]){
                                cylinder(h=5.4,r=0.5,center=true);
                        }
                    }
                    translate([0,-22.2,55]){
                        rotate([10,0,0]){
                            cylinder(h=10,r=0.5,center=true);
                        }
                    }
                }
            }
        }

        if(Facial_Expression == "Scary"){
            translate([0,-17,71]){          //eyeballs if Scary
                translate([10,0,0]){
                    color("black"){
                        sphere(r=4);
                    }
                }
                translate([-10,0,0]){
                    color("black"){
                        sphere(r=4);
                    }
                }
            }

            if(Teeth == "Yes"){
                translate([0,-21,65]){      //teeth if Scary
                    translate([-2.5,0,0]){
                        color("black"){
                            scale([1,1,2]){
                                rotate([0,-45,-8]){
                                    cube([3,3,3],center=true);
                                }
                            }
                        }
                    }
                    translate([2.5,0,0]){
                        color("black"){
                            scale([1,1,2]){
                                rotate([0,45,8]){
                                    cube([3,3,3],center=true);
                                    }
                                }
                            }
                        }
                    }
                    if(Supports == "Yes"){
                        translate([-2.5,-21.6,56]){
                            rotate([5,0,0]){
                                cylinder(h=10,r=0.5,center=true);
                            }
                        }
                        translate([2.5,-21.6,56]){
                            rotate([5,0,0]){
                                cylinder(h=10,r=0.5,center=true);
                            }
                        }
                        translate([0,-22.6,58]){
                            rotate([10,0,0]){
                                cylinder(h=17,r=0.5,center=true);
                            }
                        }
                    }
                }
            }
         if(Cape == "Yes"){
            color("DarkRed"){
                difference(){
                    difference(){
                        union(){
                            translate([0,0,27.5]){
                                cylinder(h=55, r1=35,r2=24,center=true);
                            }
                            translate([0,0,62.3]){
                                difference(){
                                    cylinder(h=15,r1=24,r2=30,center=true);
                                    cylinder(h=16,r1=15,r2=28,center=true);
                                }
                            }
                        }
                        union(){
                            translate([0,-111,10]){
                                rotate([0,90,0]){
                                    cylinder(h=200,r=100,center=true);
                                }
                            }

                            translate([0,-10,-5]){
                                cylinder(h=100,r=15);
                            }
				    translate([0,-46,50]){
                                rotate([-10,0,0]){
                                    cube([100,50,100],center=true);
                                }
                            }
				}
                    }
                    translate([0,0,-49.5]){
                        cube([100,100,100],center=true);
                    }
                }
            }
        }
    }
    if(Part == "Whole" || Part == "Bow_Tie"){
        if(Bow_Tie == "Yes"){
            translate([0,-50,2]){            //bowtie
                rotate([-90,0,0]){
                    color("red"){
                        difference(){
                            union(){
                                translate([7,0,0]){
                                    scale([1.5,1,1]){
                                        rotate([0,45,0]){
                                            cube([7,3,7],center=true);
                                        }
                                    }
                                }
                                translate([-7,0,0]){
                                    scale([1.5,1,1]){
                                        rotate([0,45,0]){
                                            cube([7,3,7],center=true);
                                        }
                                    }
                                }
                                cube([4,3,5],center=true);
                                translate([0,-3,0]){
                                    rotate([90,0,0]){
                                        cylinder(h=8,r=1.5,center=true);
                                    }
                                }
                            }
                            union(){
                                translate([12.5,0,0]){
                                    cube([10,10,20],center=true);
                                }
                                translate([-12.5,0,0]){
                                    cube([10,10,20],center=true);
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}
}
```


[User]
Hey, I'm looking to get some help designing a 3D-printable adapter for my bike rack. I have a Topeak rack with a license plate mounting area, and I want to attach a common type of tail light to it. I've seen a few designs online, but I'd like to create one that's parametric so I can easily adjust it for different lights or racks in the future.

Here's the basic idea:

*   **Topeak Rack Interface:** The adapter needs to attach to the license plate mount area of my Topeak rack. This mount has two holes that are 50mm apart center-to-center, and they are 5.8mm in diameter. The plate mount is about 14.5mm high.
*   **Tail Light Interface:** The tail light slides onto a groove, typically around 20.6mm wide on the inside, and 15.5mm on the outside, and the walls of the groove are a few mm thick. I don't have the exact specs, so I'd like to make the tail light interface adjustable so I can tweak the dimensions in the code.
*   **Attachment:**  The adapter should have a flat plate with holes matching the Topeak rack for mounting to that plate. It should then extend down, then bend to form the groove for the tail light to slide into.
*   **Material:** I'm planning on 3D printing this, so the material thickness and design should be robust enough to handle normal bike vibrations. The goal is that the light is held securely and doesn't pop out on a bumpy trail. I've had that issue before.
*   **Additional:** It'd be nice if the code would allow for easy modification of wall thicknesses, tongue and base dimensions, and the mounting plate hole separation, and if there was a way to add a retaining mechanism, if needed. I don't really have any good ideas how to achieve the retaining mechanism, but it would be great to have in the code in some form so I can modify it. The included file below has some ideas but, honestly, it's kind of rough.

Ideally, the design would be fully parametric using OpenSCAD, so I can easily modify things like the groove width, wall thickness, mounting plate dimensions, and hole spacing, which is critical for future tweaks and adjustments. I'd like to use the BOSL2 library if possible.

Here's a copy of some existing code I've been working with as a reference, but I'd prefer a clean implementation:

```
/*

Topeak Bike Rack License Plate to Tail Light Mount Adaptor v0.9
Rob Meyer
Oct 21, 2015

Modified from http://www.thingiverse.com/thing:8947/
Adapter for bike light to rack
Gian Pablo Villamil
May 30, 2011

Topeak bike rack license plate mount:
	Total width: 59.0mm
	Total height: 14.50mm
	center-to-center hole distance: 50.0mm
	rounded corner radius:

Standard chinese tail light slide track:
	inside groove width: 20.6mm
	outside groove width: 15.5mm
	track height:
	wall thickness:

*/
$fn = 100;
overlap = 0.01; // negligible amount necessary to make unions and differences render properly

bracket_height = 20.3;
tongue_width = 20.6;
tongue_thickness = 3;
base_width = 15.5; // How large the "outside" groove track is. Should be less than tongue_width by 2x the desired wall thickness
base_thickness = 2.5;
side_thickness = 2.5;

plate_thickness = 3;
plate_width = 100;
plate_height = bracket_height;

hole_dia = 5.8 ;
hole_sep = 49.0 ; // Topeak

module plate() {
	difference() {
		union() {
			cube(size= [hole_sep, plate_thickness, plate_height], center = true);
			translate ([hole_sep/2,0,0]) rotate (a = 90, v = [1,0,0])
				cylinder(h = plate_thickness, r = plate_height/2, center = true);
			translate ([-hole_sep/2,0,0]) rotate (a = 90, v = [1,0,0])
				cylinder(h = plate_thickness, r = plate_height/2, center = true);
			translate ([hole_sep/2+plate_height/4,0,-plate_height/4])
				cube(size = [plate_height/2,plate_thickness,plate_height/2],center = true);
			translate ([-(hole_sep/2+plate_height/4),0,-plate_height/4])
				cube(size = [plate_height/2,plate_thickness,plate_height/2],center = true);

		}
		translate ([hole_sep/2,0,0]) rotate (a = 90, v = [1,0,0])
			cylinder(h = plate_thickness+2, r = hole_dia/2, center = true);
		translate ([-hole_sep/2,0,0]) rotate (a = 90, v = [1,0,0])
			cylinder(h = plate_thickness+2, r = hole_dia/2, center = true);
	};
};

module bracket() {
	union() {
		difference(){
			translate([-(tongue_width+(side_thickness *2))/2,0,0])
				cube(size = [tongue_width+(side_thickness * 2),plate_thickness+tongue_thickness+base_thickness, bracket_height], center = false);
			translate([-tongue_width/2+overlap/2,2.5,-overlap/2])
				cube(size = [tongue_width+overlap, tongue_thickness+overlap, bracket_height+overlap], center=false);
			translate([-base_width/2,-overlap/2,-overlap/2])
				cube(size = [base_width+overlap, base_thickness+overlap, bracket_height+overlap], center=false);
		};

		translate([-tongue_width/2-overlap/2, base_thickness-overlap/2, 0])
			cube(size = [tongue_width+overlap*2, plate_thickness+overlap, plate_thickness], center=false);
	};
};

module release() {
	union() {
		translate([-3.5,-plate_thickness/2,0])
		#cube(size = [7, plate_thickness, 10], center = false);
		translate([0,-1.25,10]) rotate(a = 45, v = [1,0,0])
		cube(size = [4,2,2], center = true);
		translate([0,plate_thickness/2,12]) rotate(a = 90, v = [1,0,0])
		cylinder(h = plate_thickness, r = 6);
	};
}

rotate(a=90, v=[-1,0,0])
{
	union()
	{
		plate();
		translate([0,-7,-plate_height/2])
			bracket();
	}
}
//translate([0,0,10])
//release();
```

[Assistant]
TopeakRackTailLightMountAdaptor.scad:
```
/*

Topeak Bike Rack License Plate to Tail Light Mount Adaptor v0.9
Rob Meyer
Oct 21, 2015

Modified from http://www.thingiverse.com/thing:8947/
Adapter for bike light to rack
Gian Pablo Villamil
May 30, 2011

Topeak bike rack license plate mount:
	Total width: 59.0mm
	Total height: 14.50mm
	center-to-center hole distance: 50.0mm
	rounded corner radius:

Standard chinese tail light slide track:
	inside groove width: 20.6mm
	outside groove width: 15.5mm
	track height:
	wall thickness:

*/
$fn = 100;
overlap = 0.01; // negligible amount necessary to make unions and differences render properly

bracket_height = 20.3;
tongue_width = 20.6;
tongue_thickness = 3;
base_width = 15.5; // How large the "outside" groove track is. Should be less than tongue_width by 2x the desired wall thickness
base_thickness = 2.5;
side_thickness = 2.5;

plate_thickness = 3;
plate_width = 100;
plate_height = bracket_height;

hole_dia = 5.8 ;
hole_sep = 49.0 ; // Topeak

module plate() {
	difference() {
		union() {
			cube(size= [hole_sep, plate_thickness, plate_height], center = true);
			translate ([hole_sep/2,0,0]) rotate (a = 90, v = [1,0,0])
				cylinder(h = plate_thickness, r = plate_height/2, center = true);
			translate ([-hole_sep/2,0,0]) rotate (a = 90, v = [1,0,0])
				cylinder(h = plate_thickness, r = plate_height/2, center = true);
			translate ([hole_sep/2+plate_height/4,0,-plate_height/4])
				cube(size = [plate_height/2,plate_thickness,plate_height/2],center = true);
			translate ([-(hole_sep/2+plate_height/4),0,-plate_height/4])
				cube(size = [plate_height/2,plate_thickness,plate_height/2],center = true);

		}
		translate ([hole_sep/2,0,0]) rotate (a = 90, v = [1,0,0])
			cylinder(h = plate_thickness+2, r = hole_dia/2, center = true);
		translate ([-hole_sep/2,0,0]) rotate (a = 90, v = [1,0,0])
			cylinder(h = plate_thickness+2, r = hole_dia/2, center = true);
	};
};

module bracket() {
	union() {
		difference(){
			translate([-(tongue_width+(side_thickness *2))/2,0,0])
				cube(size = [tongue_width+(side_thickness * 2),plate_thickness+tongue_thickness+base_thickness, bracket_height], center = false);
			translate([-tongue_width/2+overlap/2,2.5,-overlap/2])
				cube(size = [tongue_width+overlap, tongue_thickness+overlap, bracket_height+overlap], center=false);
			translate([-base_width/2,-overlap/2,-overlap/2])
				cube(size = [base_width+overlap, base_thickness+overlap, bracket_height+overlap], center=false);
		};

		translate([-tongue_width/2-overlap/2, base_thickness-overlap/2, 0])
			cube(size = [tongue_width+overlap*2, plate_thickness+overlap, plate_thickness], center=false);
	};
};

module release() {
	union() {
		translate([-3.5,-plate_thickness/2,0])
		#cube(size = [7, plate_thickness, 10], center = false);
		translate([0,-1.25,10]) rotate(a = 45, v = [1,0,0])
		cube(size = [4,2,2], center = true);
		translate([0,plate_thickness/2,12]) rotate(a = 90, v = [1,0,0])
		cylinder(h = plate_thickness, r = 6);
	};
}

rotate(a=90, v=[-1,0,0])
{
	union()
	{
		plate();
		translate([0,-7,-plate_height/2])
			bracket();
	}
}
//translate([0,0,10])
//release();

```