[User]
I'd like to create a customizable lithophane keychain, and I'm having trouble getting started with the code. I want it to be parametric so I can easily change the size, shape, and other features.

Here's what I'm envisioning:

*   **Image Input:** The core of the keychain will be a lithophane generated from a grayscale image file. I need to be able to specify the image file path. The image should be scaled and used as the surface for the lithophane.
*   **Shape:** I need to choose between a circular or square keychain shape.
*   **Size:** There should be a parameter for the overall tag size (diameter for a circle, side length for a square).
*   **Ring Hole:** A hole for a keyring needs to be included, with adjustable diameter.
*   **Layer Height and Layers:** The lithophane thickness should be defined by a combination of the layer height, and the number of layers. The base of the lithophane should be two layers thick.
*   **Border:** A border should surround the lithophane, and both the width and thickness of the border should be adjustable.
*   **Placement:** I'd like the ring hole to be placed near the edge of the main shape; for a circle, I'd like it to be on the edge at the top; for a square, I'd like it to be at the top corner.
*   **Libraries:** I don't want to assume any pre-existing code, so please generate the code from scratch and don't use any specific libraries (like MCAD or BOSL).

Could you generate an OpenSCAD file for this, with all parameters nicely grouped for easy adjustment?

[Assistant]
go3d_keychain.scad:
```
//keychain-Customizable Lithopane by Mark G. Peeters
//http://www.thingiverse.com/thing:308109
//version 1.3
//if you are using openSCAD then you are cool! You can get DAT files for local use using this tool
//http://customizer.makerbot.com/image_surface
// i used the nice code for adjusting layers from here:
//http://www.thingiverse.com/thing:74322

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

// Load a 100x100 pixel image.(images will be stretched to fit) Simple photos work best. Don't forget to click the Invert Colors checkbox! *** ALSO IF YOU HAVE LETTERS IN YOUR IMAGE make sure to reverse the image before uploading so the letters are not backwards.
image_file = "image-surface.dat"; // [image_surface:100x100]

/* [Adjustments] */

//shape NOTE: ALL units are in millimeters (mm)
shape = 1;//[0:circle, 1:square]
//over all size of the keychain. you picked
tag_size = 45;// [20:70]
// size for keyring 4.5 or 5 is good.
ring_hole=4.5;
// What layer height will you slice this at?  The thinner the better.
layer_height = 0.1;
//Use plastic color opacity to set this. The lower the layer height, the more layers you can use. you picked
number_of_layers = 20; // [5:30]
//Width of boarder lining the keychain (3mm is fine)
boarder_width = 3;//
//boarder thickness lining the keychain (at least 3mm for strength)
boarder_thick = 3;//

/* [Hidden] */

// base (white) will always be 2 layers thick
min_layer_height = layer_height*2;
height = layer_height*number_of_layers;
maxheight = height+min_layer_height;

// Make litho and trim bottom and sides
  difference() { //diff 1
  translate([0, 0, min_layer_height]) scale([(tag_size/100),(tag_size/100),height]) surface(file=image_file, center=true, convexity=5); //litosurface moved up min_layer_height
  translate([0,0,-(maxheight)]) linear_extrude(height=maxheight) square(tag_size, center=true);//cutting bottom off surface

if (shape==0) {//you picked circle shape------------------------------------
difference() {  //diff make tube to trim lith
                translate([0, 0, -7]) cylinder(maxheight+15,r= tag_size); //outside
                translate([0, 0, -9]) cylinder(maxheight+18,r= (tag_size/2)); //inside
               } //end diff make tube
translate([0, tag_size/2+boarder_width, -1])cylinder(maxheight+2,r= ring_hole/2); //ring hole
}//end if you picked circle------------------------------------------

if (shape==1) {//you picked square shape------------------------------------
difference() {  //diff make cube to trim litho
                translate([0, 0, -7]) cube(tag_size+15,center=true); //outside
               translate([0, 0, -9]) cube(tag_size,center=true); //inside
               } //end diff make tube
translate([tag_size/2, tag_size/2, -1])cylinder(maxheight+2,r= ring_hole/2); //ring hole
}//end if you picked square

}//end diff 1

//add boarder and loop
if (shape==0) {//you picked circle shape--------------------------
translate([0, tag_size/2+boarder_width, 0]) //move loop
difference(){//make loop
cylinder(boarder_thick,r=boarder_width+ring_hole/2); //ring support
translate([0, 0, -1])cylinder(boarder_thick+2,r= ring_hole/2); //ring hole
}

difference() {  //diff make frame tube
                 cylinder(boarder_thick,r= (tag_size/2)+boarder_width); //outside
                 cylinder(boarder_thick+1,r= (tag_size/2.02)); //inside
translate([0, tag_size/2+boarder_width, -1])cylinder(boarder_thick+2,r= ring_hole/2); //ring hole
                } //end diff make frame tube

}//end if you picked circle------------------------------------------

if (shape==1) {//you picked square shape------------------------------------
translate([tag_size/2, tag_size/2, 0]) //move loop
difference(){//make loop
cylinder(boarder_thick,r=boarder_width+ring_hole/2); //ring support
translate([0, 0, -1])cylinder(boarder_thick+2,r= ring_hole/2); //ring hole
}

difference() {  //diff make frame tube
                 translate([0,0,boarder_thick/2]) cube([tag_size+boarder_width*2,tag_size+boarder_width*2,boarder_thick],center=true); //outside
                 translate([0,0,boarder_thick/2]) cube([tag_size-1,tag_size-1,boarder_thick+1],center=true); //inside
translate([tag_size/2, tag_size/2, -1])cylinder(boarder_thick+2,r= ring_hole/2); //ring hole
                        } //end diff make frame tube
}//end if you picked square------------------------------------------------

```


[User]
I need an OpenSCAD design for a customizable rectangular enclosure with a lid. The enclosure should have rounded corners and internal standoffs for screws. The lid should have corresponding holes and countersinks for the screws. I need to be able to control the overall width, height, and depth of the enclosure, as well as the wall thickness and the radius of the corner fillets. I also need to control the size and position of the standoffs and holes.

Specifically, I'd like the following parameters to be adjustable:

*   `width`: The overall width of the enclosure.
*   `height`: The overall height of the enclosure.
*   `depth`: The overall depth of the enclosure.
*   `thickness`: The thickness of the enclosure walls and lid.
*   `fillet_radius`: The radius of the rounded corners.
*   `standoff_offset`: The offset of the standoffs from the inside edges.
*   `standoff_radius`: The radius of the standoffs.
*   `standoff_hole_radius`: The radius of the screw holes in the standoffs and lid.

The standoffs should be located in all four corners of the enclosure. The lid should have matching holes that line up with the standoffs, as well as countersinks on the top side. The dimensions given for `width`, `height`, and `depth` are all *external* dimensions.

I'd like a modular design, so if you can define modules for each part (like the rounded corner block) it will be easier to understand and modify the code. I don't need any libraries for this design, I just want a standard .scad file for each module and a main file to put it all together.

[Assistant]
screw_enclosure.scad:
```
//
// Customized Enclosure
//

/*[Dimensions]*/

// Width of the enclosure
width = 120.0;
// Height of the enclosure
height = 72.0;
// Depth of the enclosure
depth = 20.0;
// Thickness of the walls and lid
thickness = 2;
// Amount of corner rounding
fillet_radius = 5.0;

/*[Hidden]*/

// Position offset from the corner for the stand-offs
standoff_offset = 0.5;
// Radius of the stand-offs
standoff_radius = 3.5;
// Radius of the hole in the stand-offs
standoff_hole_radius = 1.5;

//
// builds a solid rectangle with rounded corners (Z-only)
//
module block(width, height, depth, fillet_radius) {

    difference() {
        cube([width, height, depth], center = true);

        fudge = 0.1;
        fudge_depth = depth + 1.0;

        translate([-(width / 2), -(height / 2), -(fudge_depth / 2)])
        intersection () {
            cube([fillet_radius, fillet_radius, fudge_depth], center = false);
            difference() {
                    cube([2 * fillet_radius, 2 * fillet_radius, fudge_depth], center = false);
                    translate([fillet_radius, fillet_radius, 0.0])
                    cylinder(r = fillet_radius, h = fudge_depth);
            }
        }

        translate([-(width / 2 + fudge), (height / 2 + fudge), -(fudge_depth / 2)])
        rotate([0.0, 0.0, -90])
        intersection () {
            cube([fillet_radius, fillet_radius, fudge_depth], center = false);
            difference() {
                    cube([2 * fillet_radius, 2 * fillet_radius, fudge_depth], center = false);
                    translate([fillet_radius, fillet_radius, 0.0])
                    cylinder(r = fillet_radius, h = fudge_depth);
            }
        }

        translate([(width / 2 + fudge), (height / 2 + fudge), -(fudge_depth / 2)])
        rotate([0.0, 0.0, 180])
        intersection () {
            cube([fillet_radius, fillet_radius, fudge_depth], center = false);
            difference() {
                    cube([2 * fillet_radius, 2 * fillet_radius, fudge_depth], center = false);
                    translate([fillet_radius, fillet_radius, 0.0])
                    cylinder(r = fillet_radius, h = fudge_depth);
            }
        }

        translate([(width / 2 + fudge), -(height / 2 + fudge), -(fudge_depth / 2)])
        rotate([0.0, 0.0, 90])
        intersection () {
            cube([fillet_radius, fillet_radius, fudge_depth], center = false);
            difference() {
                    cube([2 * fillet_radius, 2 * fillet_radius, fudge_depth], center = false);
                    translate([fillet_radius, fillet_radius, 0.0])
                    cylinder(r = fillet_radius, h = fudge_depth);
            }
        }
    }
}

module enclosure(width, height, depth, fillet_radius, thickness, standoff_offset, standoff_radius, standoff_hole_radius) {
    union() {

        translate([0.0, 0.0, depth / 2.0])
        difference() {
            block(width, height, depth, fillet_radius);
            translate([0.0, 0.0, thickness])
                block(width - (2 * thickness), height - (2 * thickness), depth - thickness, fillet_radius);
        }

        translate([-((width / 2) - (thickness + standoff_radius + standoff_offset)), -((height / 2) - (thickness + standoff_radius + standoff_offset)), thickness ])
        difference() {
            cylinder(r = standoff_radius, h = (depth - (2 * thickness)), $fn=10);
            cylinder(r = standoff_hole_radius, h = (depth - (2 * thickness)), $fn=10);
        }

        translate([((width / 2) - (thickness + standoff_radius + standoff_offset)), -((height / 2) - (thickness + standoff_radius + standoff_offset)), thickness ])
        difference() {
            cylinder(r = standoff_radius, h = (depth - (2 * thickness)), $fn=10);
            cylinder(r = standoff_hole_radius, h = (depth - (2 * thickness)), $fn=10);
        }

        translate([-((width / 2) - (thickness + standoff_radius + standoff_offset)), ((height / 2) - (thickness + standoff_radius + standoff_offset)), thickness ])
        difference() {
            cylinder(r = standoff_radius, h = (depth - (2 * thickness)), $fn=10);
            cylinder(r = standoff_hole_radius, h = (depth - (2 * thickness)), $fn=10);
        }

        translate([((width / 2) - (thickness + standoff_radius + standoff_offset)), ((height / 2) - (thickness + standoff_radius + standoff_offset)), thickness ])
        difference() {
            cylinder(r = standoff_radius, h = (depth - (2 * thickness)), $fn=10);
            cylinder(r = standoff_hole_radius, h = (depth - (2 * thickness)), $fn=10);
        }

    }
}

module lid(width, height, fillet_radius, thickness, standoff_offset, standoff_radius, standoff_hole_radius) {
    difference() {

        lid_offset = 10.0;

        union() {
            translate([0.0, height + lid_offset, thickness / 2.0])
                block(width, height, thickness, fillet_radius);
            translate([0.0, height + lid_offset, thickness / 2.0 + thickness])
                block(width - (2 * thickness), height - (2 * thickness), thickness, fillet_radius);
        }

        hole_offset = height + lid_offset;

        // holes
        translate([-((width / 2) - (thickness + standoff_radius + standoff_offset)), -((height / 2) - (thickness + standoff_radius + standoff_offset)) + hole_offset, 0.0])
        cylinder(r = standoff_hole_radius, h = (2 * thickness), $fn=10);

        translate([-((width / 2) - (thickness + standoff_radius + standoff_offset)), ((height / 2) - (thickness + standoff_radius + standoff_offset)) + hole_offset, 0.0])
        cylinder(r = standoff_hole_radius, h = (2 * thickness), $fn=10);

        translate([((width / 2) - (thickness + standoff_radius + standoff_offset)), -((height / 2) - (thickness + standoff_radius + standoff_offset)) + hole_offset, 0.0])
        cylinder(r = standoff_hole_radius, h = (2 * thickness), $fn=10);

        translate([((width / 2) - (thickness + standoff_radius + standoff_offset)), ((height / 2) - (thickness + standoff_radius + standoff_offset)) + hole_offset, 0.0])
        cylinder(r = standoff_hole_radius, h = (2 * thickness), $fn=10);

        // countersinks
        translate([-((width / 2) - (thickness + standoff_radius + standoff_offset)), -((height / 2) - (thickness + standoff_radius + standoff_offset)) + hole_offset, 0.0])
        cylinder(r1 = standoff_hole_radius * 2, r2 = 0.0, h = thickness, $fn=10);

        translate([-((width / 2) - (thickness + standoff_radius + standoff_offset)), ((height / 2) - (thickness + standoff_radius + standoff_offset)) + hole_offset, 0.0])
        cylinder(r1 = standoff_hole_radius * 2, r2 = 0.0, h = thickness, $fn=10);

        translate([((width / 2) - (thickness + standoff_radius + standoff_offset)), -((height / 2) - (thickness + standoff_radius + standoff_offset)) + hole_offset, 0.0])
        cylinder(r1 = standoff_hole_radius * 2, r2 = 0.0, h = thickness, $fn=10);

        translate([((width / 2) - (thickness + standoff_radius + standoff_offset)), ((height / 2) - (thickness + standoff_radius + standoff_offset)) + hole_offset, 0.0])
        cylinder(r1 = standoff_hole_radius * 2, r2 = 0.0, h = thickness, $fn=10);

    }
}

enclosure(width, height, depth, fillet_radius, thickness, standoff_offset, standoff_radius, standoff_hole_radius);
lid(width, height, fillet_radius, thickness, standoff_offset, standoff_radius, standoff_hole_radius);

```


[User]
Hey, I'm looking to create a customizable bottle opener using OpenSCAD, and I want it to be based around using a coin as the fulcrum. I've seen a couple of designs out there, but I need something that's more parametric and flexible.

Basically, I envision the bottle opener having these main components:

1.  **A Base Flange:** This is the part that would be mounted or held, it should be able to be attached with screws or whatever works well. I'd like to be able to specify its dimensions, like width, height, and thickness. I'd also like to control the position of the screw holes, and the screw diameter. Maybe even have an option for a square base.
2.  **A Spherical Body:** This would be the main part of the opener where the coin and bottle cap interact. It needs to be a sphere that is cut off to create a flat surface for mounting. I need to control the sphere's width, height, and the angle at which it connects to the base.
3.  **A Coin Slot:** This is where the coin sits, it should be a precise cutout to hold it securely. The dimensions of this cutout should be based on a list of preset coins (US Penny, Nickel, Dime, Euro Cent, 2 Cent, 5 Cent, 10 Cent) or by custom user-defined dimensions (diameter, thickness, stickout, offset). I need to be able to adjust the coin's angle and rotation within the slot as well as lip stickout.
4.  **A Cap Cutout:** This needs to be a cutout to catch the cap of a standard bottle. It needs to have the ability to specify the diameter, thickness, and chamfer of this cutout and also it's position relative to the sphere body.
5.  **A Fulcrum:** The bottle opener needs some way to act as a level, so it needs either a physical fulcrum that can act as a contact point for the level, or an eye and tongue that is meant to add extra functionality but act as a fulcrum.

I'd also like to control:

*   The overall quality of the curves (using `$fn`).
*   Whether the design has "eyes and a tongue" or a basic fulcrum.
*   A "coin debug" option, that shows a cross section of the coin slot, just for checking.

It would be awesome if you could use OpenSCAD to create a parametric design that takes all these factors into account. I don't need it to be super polished, but as modular and customizable as possible would be ideal! I'm hoping to be able to make a range of bottle openers using different coin sizes and mounting options. It's fine if you split this into multiple files, too.

[Assistant]
bottle_opener_Customizable_v2.scad:
```
//http://www.thingiverse.com/thing:8244/

//Look like a frog
EyeAndTongue = "yes"; // [yes,no]
CoinPreset = 2; //[0:US Penny (Ideally older than 1986), 1:US Nickle, 2:US Dime, 3:Euro Cent, 4:Euro 2 Cent, 5:Euro 5 Cent, 6:Euro 10 Cent]
Quality = 100; //[24:Normal, 50:Good, 100:Smooth, 200:Overkill]

$fn=Quality;

/*TODO:
- Canadian coins
- DONE: Custom coin dimensions
- Cut out bottom of eyes if coin is larger
*/

/* [Custom Coin] */
//Find the actual diameter, reduce by 0.05mm or so
CustomCoin_Diameter=-1;
//Find the actual thickness, add ~0.23 or so
CustomCoin_Thickness=-1;
//Default: 0, For larger coins, set this higher
CustomCoin_LipStickout=-1;
//Default is 5, increase for smaller bottle caps... or something
CustomCoin_CoinOffset=-1;
//See the cross section of the coin channel, to check if the coin will be held correctly
CoinDebug = "no"; // [no,yes]

/* [Hidden] */
coinData=[
//[diameter, thickness, coin_offset (stickout), sphereHeightMod (LipStickout)]
[19, 1.75, 5, 0], // US Penny (google says: 19.05 mm, 1.52 mm)
            //For the rest, just going by original dimension changes
[21.16, 2.25, 5, 5], // US Nickle (google says: 21.21 mm, 1.95 mm)
[17.9, 1.5, 5, 0], // US Dime (wiki says: 17.91 mm, 1.35 mm)
[16.2, 1.9, 5, 0], // Euro Cent (google says: 16.25 mm, 1.67 mm)
[18.7, 1.9, 5, 0], // Euro 2 Cent (wiki says: 18.75 mm, 1.67 mm)
[21.2, 1.9, 5, 5], // Euro 5 Cent (wiki says: 21.25 mm, 1.67 mm)
[19.7, 2.15, 5, 0], // Euro 10 Cent (wiki says: 19.75 mm, 1.93 mm)
];
selectedCoin_Loaded=coinData[CoinPreset];

selectedCoin=[
override(selectedCoin_Loaded[0], CustomCoin_Diameter),
override(selectedCoin_Loaded[1], CustomCoin_Thickness),
override(selectedCoin_Loaded[2], CustomCoin_CoinOffset),
override(selectedCoin_Loaded[3], CustomCoin_LipStickout)];
echo(selectedCoin);

function override(preset, override) = (override > 0) ? override : preset;

screw_y_spacing=55;
top_screw_x_spacing=18;
screw_diameter=5;
flange_thickness=6;
flange_width=49;
flange_height=78;
sphere_width=45;
sphere_height=60+selectedCoin[3];
sphere_z_offset=8;
sphere_y_offset=-3;
cylinder_offset=-6.5;	// this is the y offset for a cylinder that cuts off some of the overhangs
wall_thickness=4;
roof_thickness=12;
sphere_angle=25;

coin_angle=35;
cap_angle=70;

coin_rotation=8; //Rotation up from bottom edge
coin_stickout=selectedCoin[2]+selectedCoin[3]/2; //positive makes bottle cap not fit?
coin_diam=selectedCoin[0];
coin_thickness=selectedCoin[1];

cap_diam=30;
cap_chamfer=3;
cap_thickness=6;
countersink_depth=3;
fulcrum_diam=6;
fulcrum_y_offset=-4;
fulcrum_z_offset=3;

eye_height=35+selectedCoin[3]/2;
eye_diam=10;
eye_x_angle=sphere_angle;
eye_y_angle=18;
tongue_thickness=10;
tongue_length=19;
tongue_width=25;
tongue_angle=75;
tongue_z_offset=-3;
tongue_groove=5;
pupil_diam=3;
eye_and_tongue=EyeAndTongue == "yes";		//give it a tongue and eyes

difference() {
	scale([flange_width,flange_height,flange_thickness]) cylinder(r=1/2, h=1);

	for (offset=[1,-1]) if (offset==1) for (xoff=[1,-1]) translate([xoff*top_screw_x_spacing/2,offset*screw_y_spacing/2,-1]) {
		cylinder(r=screw_diameter/2, h=flange_thickness+2);
		translate([0,0,flange_thickness-countersink_depth+1.01]) cylinder(r1=screw_diameter/2, r2=screw_diameter/2+countersink_depth, h=countersink_depth);
	}
	else translate([0,offset*screw_y_spacing/2,-1]) {
		cylinder(r=screw_diameter/2, h=flange_thickness+2);
		translate([0,0,flange_thickness-countersink_depth+1.01]) cylinder(r1=screw_diameter/2, r2=screw_diameter/2+countersink_depth, h=countersink_depth);
	}
	translate([0,sphere_y_offset-2,8]) rotate([-cap_angle,0,0]) cap_cutout();

}

translate([0,sphere_y_offset,flange_thickness+sphere_z_offset])
difference() {
    union()
    {
	rotate([-sphere_angle,0,0]) scale([sphere_width,sphere_width,sphere_height]) sphere(r=1/2);

        //negating the outside translate
        // This is to make sure the eyes won't interfere with the coin placement
        translate([0,-sphere_y_offset,-flange_thickness-sphere_z_offset])
            eye_and_tongue_module();
    }
	rotate([-sphere_angle,0,0]) {
		translate([0,0,-(roof_thickness-wall_thickness)]) scale([sphere_width-wall_thickness,sphere_width-wall_thickness,sphere_height-roof_thickness]) sphere(r=(1/2));
		translate([-sphere_width/2,-sphere_width,-sphere_height/2]) cube([sphere_width,sphere_width,sphere_height]);
	}
	translate([0,cylinder_offset,0]) cylinder(r=sphere_width/2-wall_thickness, h=sphere_height);
	translate([-sphere_width/2,-sphere_width/2,-sphere_height-sphere_z_offset]) cube([sphere_width,sphere_width,sphere_height]);
	rotate([-coin_angle,0,0]) translate([0,0,sphere_height/2+coin_diam/2-roof_thickness-coin_stickout]) rotate([coin_rotation,0,0]) coin_cutout();

    if (CoinDebug == "yes")
    {
        rotate([-coin_angle,0,0]) translate([-20,0,sphere_height/2+coin_diam/2-roof_thickness-coin_stickout-20]) rotate([0,0,-90]) cube([20,40,40]);
    }

    //Connection Debug:
    //translate([-30,-10,-7.5])
    //    cube([60,40,40]);
}

module eye_and_tongue_module()
{
if (eye_and_tongue) {
	for (eye=[-1,1]) rotate([-eye_x_angle,eye*eye_y_angle,0]) translate([0,0,eye_height]) difference() {
		sphere(r=eye_diam/2);
		translate([0,0,eye_diam/2]) sphere(r=pupil_diam/2);
	}
}
}
if (eye_and_tongue) {
	difference() {
		translate([0,sphere_width/2+sphere_y_offset-wall_thickness*2,flange_thickness+tongue_z_offset]) rotate([tongue_angle,0,0]) difference() {
			scale([tongue_width,tongue_thickness,tongue_length*2]) sphere(r=1/2);
			translate([0,0,-tongue_length/2]) cube([tongue_width+2, tongue_thickness+2, tongue_length], center=true);
			rotate([8,0,0]) scale([1,1,1]) translate([0,tongue_thickness/2+tongue_groove/3,0]) cylinder(r=tongue_groove/2, h=tongue_length);

		}
		translate([0,0,-flange_thickness/2]) cube([flange_width+2,flange_height+2,flange_thickness*2], center=true);
	}
} else {
	translate([0,fulcrum_y_offset,flange_thickness-fulcrum_diam/2+fulcrum_z_offset]) rotate([0,90,0]) translate([0,0,-sphere_width/2+wall_thickness/2]) cylinder(r=fulcrum_diam/2, h=sphere_width-wall_thickness);
}

//translate([0,sphere_y_offset,flange_thickness+sphere_z_offset]) rotate([-coin_angle,0,0]) translate([0,0,sphere_height/2+coin_diam/2-roof_thickness-coin_stickout])  rotate([coin_rotation,0,0]) coin();

//translate([0,+sphere_y_offset,13]) rotate([-cap_angle+15,0,0]) cap();

module coin()
{
	translate([0,coin_thickness/2,0]) rotate([90,0,0]) cylinder(r=coin_diam/2, h=coin_thickness);

}

module coin_cutout()
{
	translate([0,coin_thickness/2,0]) rotate([90,0,0]) union() {
		cylinder(r=coin_diam/2, h=coin_thickness);
		translate([-coin_diam/2,-coin_diam,0]) cube([coin_diam,coin_diam,coin_thickness]);

	}

}

module cap()
{
	rotate([90,0,0]) cylinder(r=cap_diam/2, h=cap_thickness, center=true);
}

module cap_cutout()
{
	rotate([90,0,0])
    {
		cylinder(r1=cap_diam/2, r2=cap_diam/2+cap_chamfer, h=cap_thickness, center=true);
        //don't leave sharp edge on cap cutout
        //  Fixed by just extending straight down
        translate([0,0,cap_thickness/2-0.001])
            cylinder(r=cap_diam/2+cap_chamfer, h=cap_thickness);
    }
}

```
bottle_opener_Customizable_v1.scad:
```
//http://www.thingiverse.com/thing:8244/

//Look like a frog
EyeAndTongue = "yes"; // [yes,no]
CoinPreset = 1; //[0:US Penny (Ideally older than 1986), 1:US Nickle, 2:US Dime, 3:Euro Cent, 4:Euro 2 Cent, 5:Euro 5 Cent, 6:Euro 10 Cent]
Quality = 100; //[24:Normal, 50:Good, 100:Smooth, 200:Overkill]

$fn=Quality;

/*TODO:
- Canadian coins
- DONE: Custom coin dimensions
- Cut out bottom of eyes if coin is larger
*/

/* [Custom Coin] */
//Find the actual diameter, reduce by 0.05mm or so
CustomCoin_Diameter=-1;
//Find the actual thickness, add ~0.23 or so
CustomCoin_Thickness=-1;
//Default: 0, For larger coins, set this higher
CustomCoin_LipStickout=-1;
//Default is 5, increase for smaller bottle caps... or something
CustomCoin_CoinOffset=-1;
//See the cross section of the coin channel, to check if the coin will be held correctly
CoinDebug = "no"; // [no,yes]

/* [Hidden] */
coinData=[
//[diameter, thickness, coin_offset (stickout), sphereHeightMod (LipStickout)]
[19, 1.75, 5, 0], // US Penny (google says: 19.05 mm, 1.52 mm)
            //For the rest, just going by original dimension changes
[21.16, 2.2, 5, 5], // US Nickle (google says: 21.21 mm, 1.95 mm)
[17.9, 1.5, 5, 0], // US Dime (wiki says: 17.91 mm, 1.35 mm)
[16.2, 1.9, 5, 0], // Euro Cent (google says: 16.25 mm, 1.67 mm)
[18.7, 1.9, 5, 0], // Euro 2 Cent (wiki says: 18.75 mm, 1.67 mm)
[21.2, 1.9, 5, 5], // Euro 5 Cent (wiki says: 21.25 mm, 1.67 mm)
[19.7, 2.15, 5, 0], // Euro 10 Cent (wiki says: 19.75 mm, 1.93 mm)
];
selectedCoin_Loaded=coinData[CoinPreset];

selectedCoin=[
override(selectedCoin_Loaded[0], CustomCoin_Diameter),
override(selectedCoin_Loaded[1], CustomCoin_Thickness),
override(selectedCoin_Loaded[2], CustomCoin_CoinOffset),
override(selectedCoin_Loaded[3], CustomCoin_LipStickout)];
echo(selectedCoin);

function override(preset, override) = (override > 0) ? override : preset;

screw_y_spacing=55;
top_screw_x_spacing=18;
screw_diameter=5;
flange_thickness=6;
flange_width=49;
flange_height=78;
sphere_width=45;
sphere_height=60+selectedCoin[3];
sphere_z_offset=8;
sphere_y_offset=-3;
cylinder_offset=-6.5;	// this is the y offset for a cylinder that cuts off some of the overhangs
wall_thickness=4;
roof_thickness=12;
sphere_angle=25;

coin_angle=35;
cap_angle=70;

coin_rotation=8; //Rotation up from bottom edge
coin_stickout=selectedCoin[2]+selectedCoin[3]/2; //positive makes bottle cap not fit?
coin_diam=selectedCoin[0];
coin_thickness=selectedCoin[1];

cap_diam=30;
cap_chamfer=3;
cap_thickness=6;
countersink_depth=3;
fulcrum_diam=6;
fulcrum_y_offset=-4;
fulcrum_z_offset=3;

eye_height=35+selectedCoin[3]/2;
eye_diam=10;
eye_x_angle=sphere_angle;
eye_y_angle=18;
tongue_thickness=10;
tongue_length=19;
tongue_width=25;
tongue_angle=75;
tongue_z_offset=-3;
tongue_groove=5;
pupil_diam=3;
eye_and_tongue=EyeAndTongue == "yes";		//give it a tongue and eyes

difference() {
	scale([flange_width,flange_height,flange_thickness]) cylinder(r=1/2, h=1);

	for (offset=[1,-1]) if (offset==1) for (xoff=[1,-1]) translate([xoff*top_screw_x_spacing/2,offset*screw_y_spacing/2,-1]) {
		cylinder(r=screw_diameter/2, h=flange_thickness+2);
		translate([0,0,flange_thickness-countersink_depth+1.01]) cylinder(r1=screw_diameter/2, r2=screw_diameter/2+countersink_depth, h=countersink_depth);
	}
	else translate([0,offset*screw_y_spacing/2,-1]) {
		cylinder(r=screw_diameter/2, h=flange_thickness+2);
		translate([0,0,flange_thickness-countersink_depth+1.01]) cylinder(r1=screw_diameter/2, r2=screw_diameter/2+countersink_depth, h=countersink_depth);
	}
	translate([0,sphere_y_offset-2,8]) rotate([-cap_angle,0,0]) %cap_cutout();

}

translate([0,sphere_y_offset,flange_thickness+sphere_z_offset])
difference() {
    union()
    {
	rotate([-sphere_angle,0,0]) scale([sphere_width,sphere_width,sphere_height]) sphere(r=1/2);

        //negating the outside translate
        // This is to make sure the eyes won't interfere with the coin placement
        translate([0,-sphere_y_offset,-flange_thickness-sphere_z_offset])
            eye_and_tongue_module();
    }
	rotate([-sphere_angle,0,0]) {
		translate([0,0,-(roof_thickness-wall_thickness)]) scale([sphere_width-wall_thickness,sphere_width-wall_thickness,sphere_height-roof_thickness]) sphere(r=(1/2));
		translate([-sphere_width/2,-sphere_width,-sphere_height/2]) cube([sphere_width,sphere_width,sphere_height]);
	}
	translate([0,cylinder_offset,0]) cylinder(r=sphere_width/2-wall_thickness, h=sphere_height);
	translate([-sphere_width/2,-sphere_width/2,-sphere_height-sphere_z_offset]) cube([sphere_width,sphere_width,sphere_height]);
	rotate([-coin_angle,0,0]) translate([0,0,sphere_height/2+coin_diam/2-roof_thickness-coin_stickout]) rotate([coin_rotation,0,0]) #coin_cutout();

    if (CoinDebug == "yes")
    {
        rotate([-coin_angle,0,0]) translate([-20,0,sphere_height/2+coin_diam/2-roof_thickness-coin_stickout-20]) rotate([0,0,-90]) cube([20,40,40]);
    }
}

module eye_and_tongue_module()
{
if (eye_and_tongue) {
	for (eye=[-1,1]) rotate([-eye_x_angle,eye*eye_y_angle,0]) translate([0,0,eye_height]) difference() {
		sphere(r=eye_diam/2);
		translate([0,0,eye_diam/2]) sphere(r=pupil_diam/2);
	}
	difference() {
		translate([0,sphere_width/2+sphere_y_offset-wall_thickness*2,flange_thickness+tongue_z_offset]) rotate([tongue_angle,0,0]) difference() {
			scale([tongue_width,tongue_thickness,tongue_length*2]) sphere(r=1/2);
			translate([0,0,-tongue_length/2]) cube([tongue_width+2, tongue_thickness+2, tongue_length], center=true);
			rotate([8,0,0]) scale([1,1,1]) translate([0,tongue_thickness/2+tongue_groove/3,0]) cylinder(r=tongue_groove/2, h=tongue_length);

		}
		translate([0,0,-flange_thickness/2]) cube([flange_width+2,flange_height+2,flange_thickness*2], center=true);
	}
} else {
	translate([0,fulcrum_y_offset,flange_thickness-fulcrum_diam/2+fulcrum_z_offset]) rotate([0,90,0]) translate([0,0,-sphere_width/2+wall_thickness/2]) cylinder(r=fulcrum_diam/2, h=sphere_width-wall_thickness);
}
}

//translate([0,sphere_y_offset,flange_thickness+sphere_z_offset]) rotate([-coin_angle,0,0]) translate([0,0,sphere_height/2+coin_diam/2-roof_thickness-coin_stickout])  rotate([coin_rotation,0,0]) coin();

//translate([0,+sphere_y_offset,13]) rotate([-cap_angle+15,0,0]) cap();

module coin()
{
	translate([0,coin_thickness/2,0]) rotate([90,0,0]) cylinder(r=coin_diam/2, h=coin_thickness);

}

module coin_cutout()
{
	translate([0,coin_thickness/2,0]) rotate([90,0,0]) union() {
		cylinder(r=coin_diam/2, h=coin_thickness);
		translate([-coin_diam/2,-coin_diam,0]) cube([coin_diam,coin_diam,coin_thickness]);

	}

}

module cap()
{
	rotate([90,0,0]) cylinder(r=cap_diam/2, h=cap_thickness, center=true);
}

module cap_cutout()
{
	rotate([90,0,0])
		cylinder(r1=cap_diam/2, r2=cap_diam/2+cap_chamfer, h=cap_thickness, center=true);

}
```


[User]
Okay, I'd like to design a desiccant box with three parts: a pan, a box, and a lid. I need it to be parametric so I can adjust the dimensions and features easily.

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

*   **The Pan:** This will be the base, like a tray, with a lip that fits inside the box.
*   **The Box:** This is the main container, it needs to fit on top of the pan lip and hold the desiccant material. It should also have vents or slots for air circulation.
*   **The Lid:** This sits on top of the box and should also have vent holes. It needs to fit snugly on the box, without being too tight.

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

*   **`width`**: The overall width of the box (and all its parts).
*   **`depth`**: The overall depth of the box (and all its parts).
*   **`boxHeight`**: The total height of the box (excluding the pan and lid).
*  **`panHeight`**: The total height of the pan.
*   **`lidHeight`**: The total height of the lid.
*   **`wall`**: The thickness of the walls for all components.
*   **`scivSize`**: The size of the ventilation holes in the box and lid. I'm thinking the holes could be square or diamond shaped. Also make these spacing parametric.
*   **`slatThickness`**: The thickness of the slats in the box.
*   **`slatSpace`**: The space between the slats in the box.

I'd like the box to have vents on all four sides. The pan and lid should have vents on the top surface. I think a grid pattern for the ventilation holes would look nice.

I'd like the pan to have walls that extend upwards to create a lip that will fit inside the bottom of the box.

The lid should have a lip that fits snugly over the top of the box.

Could you please provide an OpenSCAD file (or files) for this design using these parameters? I'd like it to be as parametric as possible, so I can easily customize it. I'm happy to install any required libraries as long as they're OpenSCAD libraries. Please specify which ones you are using.

[Assistant]
desicantBox.scad:
```
// ************* Credits part *************
// "Parametric Desicant Box"
// Programmed by Marcel Chabot - Feburary 2016
// Optimized for Customizer
//
//
//********************** License ******************
//**        "Parametric Desicant Box"            **
//**                  by Marcel Chabot           **
//**  is licensed under the Creative Commons     **
//** - Attribution - Non-Commercial license.     **
//*************************************************

// ************* Declaration part *************
//Box Width
width = 100;
//Box Depth
depth = 150;
//Box Height
boxHeight = 30;
//Pan Height
panHeight = 10;
//Lid Height
lidHeight = 8;
//Wall depth
wall = 3.5;
//Sciv Size
scivSize = 3;

pan(width,depth,panHeight,wall);
translate([width+1,0,0])
lid(width,depth,lidHeight,wall);
translate([2*width+5,0,0])
Box(width,depth,boxHeight,wall);

module pan(width, depth, height, wall){
    difference(){
        cube([width, depth, height], true);
        translate([0,0,1])
        cube([width-wall, depth-wall, height], true);

        translate([0,0,height-2])
        cube([width-wall/2+0.5,depth-wall/2+0.5,height],true);
    }
}

module lid(width, depth, height, wall){
    difference(){
        cube([width, depth, height], true);
        translate([0,0,1])
        cube([width-wall, depth-wall, height], true);

        translate([0,0,height-4])
        cube([width-wall/2+0.5,depth-wall/2+0.5,height],true);

        translate([0,0,-1*(height/2-1)])
        sciv(width, depth, height/2, scivSize, scivSize);
    }
}
module Box(width, depth, height, wall){
    difference(){
        union(){
            cube([width, depth, height], true);

            translate([0,0,height/2])
            cube([width-wall/2,depth-wall/2,4], true);

            translate([0,0,-height/2-1])
            cube([width-wall/2-0.5,depth-wall/2-0.5,2], true);
        }

        translate([0,0,1])cube([width-wall, depth - wall, height+4], true);

        translate([width/2-wall/2, depth/2, 2])
        slats(width, depth, height-2, wall, 1, 2);

        translate([-1*(width/2-wall/2), -depth/2, 2])
        rotate([0,0,180])
        slats(width, depth, height-2, wall, 1, 2);

        translate([-width/2,depth/2-wall/2,2])
        rotate([0,0,90])
        slats(depth, width, height-2, wall, 1, 2);

        translate([width/2,-1*(depth/2-wall/2),2])
        rotate([0,0,-90])
        slats(depth, width, height-2, wall, 1, 2);

        translate([0,0,-1*(height/2)])
        sciv(width, depth, height/2, scivSize, scivSize);
    }
}

module sciv(width, depth, height, size, space){
    xHoles = (width)/(size+space);
    yHoles = (depth)/(size+space);

    for(y = [1:yHoles-1]){
        translate([0,depth/2 - ((size+space) * y),0]){
            for(x = [1:xHoles-1]){
                translate([width/2 - ((size+space) * x) ,0,0])
                rotate([0,0,45])
                cube([size, size, height], true);
            }
        }
    }
}

module slats(width, depth, height, wall, thickness, space){
    slatsW = depth /(thickness+ space);

    for(i=[1:slatsW-1]){
        rotate([0,0,90])
        translate([(-i*(thickness+space)), 0, 0])
        cube([thickness, wall*2, height-2], true);
    }
}
```


[User]
Okay, I'd like to design a parametric magazine stand for my AR-15 airsoft magazines, and I'd like the design to be flexible enough to work with different magazine sizes, quantities, and orientations. I've got a basic idea of what I want based on the .scad file I've been using, but I need help creating a fully parametric version. I want the magazine slots to be angled so the magazines are leaning back slightly.

Here's what I need the OpenSCAD design to be able to control:

*   **Number of magazines:**  I need a parameter to set the number of magazines the stand should hold. This should affect the overall length of the stand. I think a `mags` variable would work for this.
*   **Magazine dimensions:** There should be parameters to set the length, width, and height of the magazines, `magsize_length`, `magsize_width`, and `magsize_height` respectively.
*   **Magazine gap:** I want a parameter to control the space between the magazines, `mag_gap`.
*   **Magazine inclination:** The angle at which the magazines lean back should be configurable using a parameter like `mag_inclination_deg`.
*   **Base height:** There should be a parameter to set the height of the base of the stand, `holder_base_height`.
*   I would like to be able to add optional text to the front of the stand, with parameters such as `text_side`, `text_offset`, `text_size`, and `text`. If `text_side` is set to "none", no text should appear.

I want the stand to be created using a `difference()` operation where a solid base block has the magazine slots removed from it.

Can you generate the .scad files for this?

[Assistant]
magstand.scad:
```
/* [Magstand] */

mags = 6; // [1:100]
magsize_length = 66; // [1:200]
magsize_width = 25; // [1:200]
magsize_height = 18; // [1:200]
mag_gap = 2;

mag_inclination_deg = 15;  // [0:45]
// text_inclination_deg = 11;

holder_base_height = 1.5; // [0.5:10]

// text_side = "none";
// text_offset = 1.5;
// text_size = 10;
// text = "AR-15 5.56";

/* [Hidden] */

// Vars
complete_height = holder_base_height + magsize_height;
hole_maker = 0.01;

// Magazine slots
maghole_points = [[0,0],[magsize_width,0],[magsize_width,magsize_length],[0,magsize_length]];

// Rotated point
maghole_point = [magsize_width,0];
maghole_point_rotated = rotate_point(maghole_point[0],maghole_point[1], -mag_inclination_deg);

// Normal inclination (-1/incl)
maghole_norm_incl = -1 / ((maghole_point_rotated[1] / maghole_point_rotated[0]));
maghole_norm_ground_ix = -1 * (maghole_point_rotated[1] / maghole_norm_incl);

// Offset that is needed to satisfy a gap of 0
maghole_offset = maghole_norm_ground_ix + maghole_point_rotated[0];

// The y translation that is needed to satisfy the base height
move_holes_up = -1 * maghole_point_rotated[1] + holder_base_height;

// Calculate hole depth needed to have back edge completely sunken
maghole_point_upper = [magsize_width, magsize_height];
maghole_point_upper_rotated = rotate_point(magsize_width, magsize_height, - mag_inclination_deg);
holder_height = holder_base_height + ((maghole_point_upper_rotated[0] - maghole_point_rotated[0]) * maghole_norm_incl);

/*
if(text_side == "front") {
    // Extruded triangle platform for the text
    translate([0, magsize_length + 4,0])
    rotate([0,-90,90])
    linear_extrude(height = magsize_length + 4, convexity = 10, twist = 0)
    polygon(points=[[0,0],[holder_height,0],[0,holder_height]]);

    // Text
    translate([-13, magsize_length + 4 - text_offset, complete_height/2 - text_size / 2.5])
    rotate([45,0,-90])
    linear_extrude(height = 2, convexity = 10, twist = 0)
    text(text, size = text_size);
}
*/

difference() {
    // Magazine base
    overall_length=((mags - 1) * maghole_offset + mag_gap) + maghole_point_upper_rotated[0] + mag_gap + ((mags-1) * mag_gap);
    overall_width = magsize_length + 2 * mag_gap;
    cube([overall_length, overall_width, holder_height]);

    echo("Overall length = ", overall_length);
    echo("Overall width = ", overall_width);

    for (a =[0:mags-1]) {
        translate([(maghole_offset + mag_gap) * a + mag_gap, mag_gap, move_holes_up]) {
              rotate([0,mag_inclination_deg,0]) {
                color("violet", 1 ) linear_extrude(height = magsize_height + hole_maker) polygon(maghole_points);
            }
        }
    }
}

function rotate_point(x, y, deg) = [x * cos(deg) - y * sin(deg),
                               x * sin(deg) + y * cos(deg)];
```


[User]
Hi, I'd like to design a customizable screwdriver stand, similar to the one described [here](http://www.thingiverse.com/apps/customizer/run?thing_id=1434129). I'd like a parametric design using OpenSCAD, with a focus on flexibility.

Here's what I'm looking for:

**Basic Structure:**

*   It should be a rectangular box, acting as a base.
*   The top of the box should have cylindrical holes for holding screwdrivers (or pens, markers, etc.).
*   The number of holes should be customizable, both in rows and columns.
*   The diameter of the holes should be customizable.
*   The height of the stand should be customizable.
*   There should be spacing between the holes which is also customizable.

**Specific Features:**

*   I'd like the option to have a slight bevel at the top of each hole, creating a smooth entrance. The height and width of this bevel should be customizable parameters.
*   I want to add a text banner on the front and back of the stand, for labeling purposes. The banner text, font, and size should be customizable. The text should also be a solid extrusion, so it can be printed easily.

**Customizable Parameters:**

*   `rows`: Number of rows of holes.
*   `cols`: Number of columns of holes.
*   `height`: Height of the stand.
*   `diameter`: Diameter of the holes.
*   `separator`: Spacing between holes.
*  `banner_text`: Text for the banner.
*   `font`: Font for the banner.
*  `font_size`: Font size for the banner.
*   `bevel_height`: Height of the bevel.
*   `bevel_width`: Width of the bevel.
*   `text_depth`: Depth of the text extrusion

I want to make sure that if I increase the number of rows and columns, the stand automatically adjusts in width and depth to accommodate all the holes and spacing correctly.

I think this will be a useful tool, and I hope that OpenSCAD can handle all of these different parameters. I do not have any libraries that I need for you to import.

[Assistant]
customizable-screwdriver-stand.scad:
```
/* Customizable Screwdriver Stand, by Eran Tromer
 *
 * For GUI editing of parameters, use the Thingverse Customizer:
 * http://www.thingiverse.com/apps/customizer/run?thing_id=1434129
 *
 * Inspired by "Customizable Screwdriver Holder" by Kjell Kernen:
 * http://www.thingiverse.com/apps/customizer/run?thing_id=1044733
 *
 * The default parameters are perfect for the Wiha 26199 Slotted and Phillips Screwdriver Set.
 *
 * Licensed under the Creative Commons Attribution 4.0 International License:
 * http://creativecommons.org/licenses/by/4.0/
 */

/*[Pattern Parameters]*/

// of holes:
rows=1; // [1:10]

// of holes:
cols=8; // [1:20]

// of the stand in mm:
height=50; // [5:80]

// of the tubes in mm (recommended: at least 1mm wider than object diameter):
diameter=16; // [10:40]

// between top holes in mm:
separator = 2; // [1:10]

banner_text = "Phillips   Slotted";

font = "Courier New:style=Bold";

font_size = 10; // [5:20]

/*[Hidden]*/
base_height = 1;
bevel_height = 2;
bevel_width = 2;
text_depth = 1;
epsilon = 0.01;
cylinder_fragments = 50;

bevel_diameter = diameter+2*bevel_width;
total_width=cols*bevel_diameter+(cols+1)*separator;
total_depth=rows*bevel_diameter+(rows+1)*separator;

// Module: text banner
module banner() {
   translate([0, text_depth, 0]) {
        rotate(a=[90,0,0]) {
            linear_extrude(height=text_depth+epsilon)
                text(banner_text,
                     size=font_size,
                     font=font,
                     halign="center",
                     valign="center");
        }
    }
}

// Main model: start with a box, and subtract the tubes and banners:
difference() {
    // Box:
    cube(size = [total_width, total_depth ,height]);

    // Tubes:
    for (xi=[0:1:cols-1])
        for(yi=[0:1:rows-1]) {
            translate([(xi+0.5)*bevel_diameter+(xi+1)*separator,
                       (yi+0.5)*bevel_diameter+(yi+1)*separator, base_height])
                cylinder(d=diameter, h=height-base_height, $fn=cylinder_fragments);
            translate([(xi+0.5)*bevel_diameter+(xi+1)*separator,
                       (yi+0.5)*bevel_diameter+(yi+1)*separator, height-bevel_height+epsilon])
                cylinder(d1=diameter, d2=diameter+bevel_width+2, h=bevel_height, $fn=cylinder_fragments);
        }

    // Banner, front and back:
    translate([total_width/2, 0, height/2])
        banner();
    translate([total_width/2, total_depth, height/2])
        rotate([0,0,180])
            banner();
}

```


[User]
I'm looking to create a parametric screw in OpenSCAD, and I need it to be pretty flexible so I can adjust its dimensions easily. I'd like to be able to specify the following parameters:

*   `epaisseur_debordement`: This is a small value (like 0.1) that controls the thickness of the helical thread.
*   `pas_de_vis`: The pitch of the screw thread (e.g. 0.5).
*   `rayon`: The radius of the main body of the screw.
*   `precision`: This is for how many points are used to build the thread and should allow a smooth helical surface. Maybe this should be tied to turns or something. I'm not really sure how it works in the example code.
*    `precision_cylindre`: This is for the number of sides for the screw shaft and the head.
*   `hauteur`: The length of the screw shaft (excluding the head).
*   `hauteur_tete_de_vis`: The height of the screw head.
*    `diametre_tete_de_vis`: The diameter of the screw head.
*   `type_entrainement`: This will either be "cruciforme" (Phillips head) or "plat" (slotted head).
*    `longueur_entrainement`: The length/size of the Phillips or slot.
*    `largeur_entrainement`: The width of the slot or the cross part of the Phillips head.

The screw should have a cylindrical shaft with a helical thread, a cylindrical screw head that is wider than the shaft, and an indentation on top of the head for a screwdriver.

The thread should be created as a series of small cylinders or other 3D objects between points on a helix. I don't care about the specific method, but I need it to be smooth. I think I need a function that can figure out the rotation between any 2 points, though I'm not sure how that should work.

The Phillips head should have two intersecting rectangular extrusions. I think I need to use the `cube()` module. If I choose a flat head, it should have one rectangular extrusion. I'm guessing I need to use `union()` and `difference()` as in the provided example to get the desired geometry.

I would like to be able to call the module `vis()` and have it output the whole screw. I don't need any libraries.

Could you create the scad files to do this?

[Assistant]
vis_parametrable.scad:
```

epaisseur_debordement = 0.1;
pas_de_vis=0.5;
rayon=1.5;
precision=20;
precision_cylindre=40;
hauteur=20;
nb_tour=hauteur/pas_de_vis;
hauteur_tete_de_vis=1.65;
diametre_tete_de_vis=5.6;
type_entrainement="cruciforme";//[cruciforme,plat]
longueur_entrainement=1;
largeur_entrainement=0.2;

function norme(v) = sqrt(v[0]*v[0]+v[1]*v[1]+v[2]*v[2]);
function minus(v1,v2) = [v2[0]-v1[0],v2[1]-v1[1],v2[2]-v1[2]];
// en y puis en z
function trouve_rotation(v) = [acos(v[2]/norme(v)),
    (v[1]>=0) ? acos(v[0]/(norme(v)*sin(acos(v[2]/norme(v))))) :
               -acos(v[0]/(norme(v)*sin(acos(v[2]/norme(v)))))];
module rotate2(r) {
    rotate([0,0,r[1]]) rotate([0,r[0]]) children([0]);
}

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

module mini3D_aux(v) {
    rotate2(trouve_rotation(v))cylinder(r=epaisseur_debordement,h=norme(v),$fn=precision_cylindre);
}
module mini3D(v1,v2) {
   translate(v1) mini3D_aux(minus(v1,v2));
}

module spirale() {
    for (i=[0:precision*nb_tour-1]) {
    mini3D([rayon*cos(i*360/precision),rayon*sin(i*360/precision),i*pas_de_vis/precision],
      [rayon*cos((i+1)*360/precision),rayon*sin((i+1)*360/precision),(i+1)*pas_de_vis/precision]);
        }
}

module empreinte() {
    if (type_entrainement == "cruciforme")
        union() {
            cube([longueur_entrainement,largeur_entrainement,2],center=true);
            cube([largeur_entrainement,longueur_entrainement,2],center=true);
        };
}
module vis() {
    difference() {
        union() {
            spirale();
            cylinder(r=rayon,h=hauteur,$fn=precision_cylindre);
            translate([0,0,hauteur])
                cylinder(r1=rayon,r2=diametre_tete_de_vis/2,h=hauteur_tete_de_vis,
                    $fn=precision_cylindre);
                };
        translate([0,0,hauteur+hauteur_tete_de_vis]) empreinte();}
}

vis();
```


[User]
Hey, I'm looking to create a calibration tool for my 3D printer, specifically to figure out the backlash on my X and Y axes. I found this design online ([http://www.thingiverse.com/thing:2040624](http://www.thingiverse.com/thing:2040624)) and the basic idea is to print a grid of test features where each feature has a slightly different backlash compensation value, and then I visually inspect the print to see which compensation looks correct.

Here's the basic structure I'd like to create:

1.  **Grid Layout:** I need a grid of these calibration features. I’ll want to define the number of rows and columns.
2.  **Backlash Increment:** Each step in the grid will increase the backlash compensation value. I need to control the increments along the rows and along the columns separately, plus also have an overall start value to each.
3.  **Feature Geometry:** Each feature has a few elements: horizontal lines, a vertical line, and an angled section with some connecting lines at each end. It’s kind of hard to explain, but it is a bunch of lines and small filled in rectangles.
4.  **Print Height/Thickness:** I’ll want to be able to control the line height (which is effectively the print layer height) and the line thickness.
5.  **Zero Marker:** Include a small marker (a filled in square) near the starting point of the grid to help visually identify the base point with no backlash.

The idea is that if I find a grid space that has the smallest backlash value that looks correct in the print, I can calculate the required offset value as a sum of the starting value, the row offset value and the column offset value.

For the OpenSCAD file, I need the following parameters to be adjustable, preferably through comments:

*   `Rows`: Number of rows in the grid.
*   `Backlashstartvalue`: Starting backlash value.
*  `wallheight`: Line/layer height for printing.
*  `wallthickness`: Line width.

The values should be adjustable by 0.10 and 0.01 increments. For the rows it would also be beneficial to have single step increments. The column increment should probably be 0.10 and the row increment should be 0.01.

Can you generate a parametric OpenSCAD file for me that implements this? I don't need any special libraries.

[Assistant]
QuickBacklash.scad:
```
// Calibrate X axis
// Set backlash compensation to 0 in your software while sampling an axis.
// Each step up increases backlash offset with 0.01
// Each step right increases backlash offset with 0.10
// locate the figure with the smallest offset value and add backlash offset to it. This calculated value is your backlash offset to be entered in the printer sotware.
// E.g. if the correct figure is number 7 to the right and number 4 from the bottom and backlashstartvalue is 0.7:
// 0.7 + 0.03 + 0.5 = 1.23
// To make files for  calibrating the Y axis turn the print 90 degrees in the slicer.

/* [Size and start point] */
//Number of strips to print.
Rows = 10; //[1:1:20]
//What is the starting point? Make sure that the end-value is no more than 1.99 (Rows/10+Backlashstartvalue <= 2) because the "reset-loops" are only 2 mm
Backlashstartvalue = 0.00; // [0.0:0.1:1.9]
/* [Print thickness and height] */
//Suggestion: Wallheight = Nozzle diameter.
wallheight = 0.35; //[0.2:0.05:0.8]

//Suggestion: Wallthickness = 2 or 2.5 times the Wallheight. Those are values that work for me. Your mileage may vary a lot. Your slicer of course needs to be set acordingly so the print is made in a single layer. Fatter lines stick better to the plate but thinner lines are easier to interpret.
wallthickness = 0.85; //[0.2:0.05:1.6]

//Each sample
module unit(sx, sy, bl)
{
//color("red")
    translate([(sx+0), (sy+0), 0])
        cube([3, wallthickness, wallheight], center=false);

//color("green")
    translate([(sx+0), (sy+0), 0])
        cube([wallthickness, 1, wallheight], center=false);

//color("pink")
   linear_extrude(height = wallheight, center = false, convexity = 10, twist = 0)
    polygon(points=[[sx,sy+1],[sx+wallthickness,sy++1],[sx+bl+wallthickness,sy+3],[sx+bl,sy+3]]);

//color("purple")
    translate([(sx+bl), (sy+3), 0])
        cube([wallthickness, 2, wallheight], center=false);

//color("yellow")
    linear_extrude(height = wallheight, center = false, convexity = 10, twist = 0)
   polygon(points=[[sx+bl,sy+5],[sx+bl+wallthickness,sy+5],[sx+wallthickness,sy+7],[sx,sy+7]]);

//color("blue")
    translate([(sx+0), (sy+7), 0])
            cube([wallthickness, 1, wallheight], center=false);

//color("brown")
    translate([(sx+0), (sy+8-wallthickness), 0])
        cube([3, wallthickness, wallheight], center=false);

//Connect each sample
    if (sy>0)
     {
//color("black")
    translate([(sx+3-wallthickness), (sy-2), 0])
        cube([wallthickness, 2, wallheight], center=false);
     }
    }

//draw y strips
for (soffsy=[0:10:(Rows*10-10)])
{
    //draw 10 samples
   for (soffsx=[0:10:90])
    {

        sbl = (Backlashstartvalue + soffsy/100+ soffsx/1000);

        echo("Backlash is  ", sbl);

      unit(soffsy, soffsx, sbl  );
    }
}

// The blob that marks zero
//color("black")
    translate([(4), (3), 0])
        cube([(3*wallthickness), (3*wallthickness), wallheight], center=false);
```


[User]
Hey there, I'm looking for some help designing a parametric cabinet box that I can 3D print. I'm planning to use it in my kitchen under the counter, kind of like a hidden drawer. The design should have the following:

*   **Overall Shape:** It's basically a rectangular box with rounded corners (both inside and out) and an angled cutout on the top. I want the main box to be hollow so I can store things inside.
*   **Dimensions:**  I need parameters for:
    *   Length (L)
    *   Width (W)
    *   Height (H)
    *   Height of the angled cutout (H\_os) - this is the vertical distance from the base to the point where the angled cut starts
    *   Material thickness (THK)
    *   Corner radius (R) for the internal and external rounded edges.
*   **Mounting:** The design should have mounting holes on the back of the box, specifically two holes.
    *   These holes should have a diameter (hole\_d).
    *   They should be offset horizontally from the top edge (hole\_os\_h).
    *   And vertically from the box's center (hole\_os\_v).
*   **Cutout Angle:** The angle of the top cutout should be a parameter as well, maybe cut\_angle or something similar, and the length and width of the cut should also be variables
*   **Libraries**: I'd like to use the `BOSL` library for this project if that's possible.

The basic idea is a box that fits snugly inside my cabinet, but with mounting holes so I can secure it using some screws. I've already designed something similar (see code, Cabinet_box.scad), but I want it to be fully parametric so I can easily adjust the size and mounting if I need to, and I'm just not very comfortable writing all the code for that myself.

[Assistant]
Cabinet_box.scad:
```
//
// under counter caibinet box

//dimensions (all in mm)
FN = 200;//$fn for cylinders
//FN = 34;//$fn for cylinders

THK = 1.5; //0.0787402"
L = 50.8-2*THK; //2"
W = 177.8; //7"
H = 69.85; //2.75"
H_os = 44.45; //1.75"
R = 2;
R_O = R+THK;
hole_os_h = H-9.525; //horizantal hole offset, 3/8" from top
hole_os_v = 69.85; //verticle hole offset, 2.75" from center
hole_d = 3.175; //1/8 diamter mouting holes
cover();

module cover()
{
    difference()
    {
        cover_body();
        translate([THK,THK,THK+.1])
        S5_body();
        // angled cut on top
        translate([0,0,H_os])
        rotate([0,-25,0])
        translate([-L*.135,-W*.125,0])
        cube([L*1.35,W*1.25,H]);
        // mounting hole cutouts
        translate([L*1.5,THK+W/2-hole_os_v,hole_os_h +hole_d/2])
        rotate([0,-90,0])
        cylinder(L, r=hole_d/2, $fn = FN);
        translate([L*1.5,THK+W/2+hole_os_v,hole_os_h +hole_d/2])
        rotate([0,-90,0])
        cylinder(L, r=hole_d/2, $fn = FN);
    }

}

module cover_body()
{
    difference()
    {
        cube([L+2*THK,W+2*THK,H+THK]);
        //union()
        {
            //subtract the first corner
            difference()
            {
                cube([R_O, R_O,(H+THK)]);
                translate([R_O,R_O,0])
                rotate([0,0,180])
                    cylinder(H+THK, r=R_O, $fn = FN);
            }
            //subtract the second corner
            translate([0,(W+2*THK)-2*R_O,0])
            difference()
            {
                translate([0,R_O,0])
                cube([R_O, R_O,(H+THK)]);
                translate([R_O,R_O,0])
                rotate([0,0,180])
                cylinder(H+THK, r=R_O, $fn = FN);
            }
        }
    }
}

module S5_body()
{
    difference()
    {
        cube([L,W,H]);
        //union()
        {
            //subtract the first corner
            difference()
            {
                cube([R, R,(H)]);
                translate([R,R,0])
                rotate([0,0,180])
                    cylinder(H, r=R, $fn = FN);
            }
            //subtract the second corner
            translate([0,(W)-2*R,0])
            difference()
            {
                translate([0,R,0])
                cube([R, R,(H)]);
                translate([R,R,0])
                rotate([0,0,180])
                cylinder(H, r=R, $fn = FN);
            }
        }
    }
}

```


[User]
I need a parametric design for a mill tool holder, kind of like a stepped rack, that I can 3D print.

Here's what I'm thinking for the basic structure: It will have multiple "steps", each a bit taller than the last, with holes to hold the mill bits. The whole thing will be a rectangular prism.

I need these parameters to be adjustable:

*   `width`: The overall width of the holder.
*   `heightOfStep`: The height of each individual step.
*   `depthOfStep`: The depth of each step (how far it sticks out).
*   `numberOfSteps`: The number of steps in the rack.
*   `numberOfTools`: The number of tool holes per step.
*   `toolDiameter`: The diameter of the tool holes.
*   `toolDepth`: The depth of the tool holes.
*   `screwDiameter`: The diameter of the screws used to secure the holder.
*  `screwEachTool`: how often to place a screw along one step of tools. For example, '4' means to have a screw after every 4 tools.
*   `screwEachStep`: how often to place screws along the height of the rack. For example, '1' means that there will be screw holes in every step.

I would also like some of these things set internally, like `tolerance` to be small,  `toolDiameterTolerance` to give a little wiggle room for the tool diameter, and `step` to be calculated based on the width and number of tools so that the tools are evenly spaced. It might make sense to use `$fn` to control the resolution of the curves.

For each tool hole, it would be great to have it not just a simple cylinder, but a stepped hole to help guide the tool a little. Think of it as a cylindrical hole for the main tool depth, then a slightly wider step around the top, and then another wider section at the very top.

I would like screws to be placed into each step of the design. These holes should go all the way through each step, and can also have a stepped shape to accommodate the screw head. The screws should be oriented perpendicular to the step surface. I'd like to control the spacing of the screws across the width of the holder, as well as the frequency of screws at different depths.

I think it would be nice to use the `cubeX` module from the included file to make the main body. So, that module should also be included in one of the files. I think everything else could be made from primitives.

[Assistant]
MillToolHolder.scad:
```
// <Sopak's Mill Tool Holder> (c) by <Kamil Sopko>
//
// <Sopak's Mill Tool Holder> is licensed under a
// Creative Commons Attribution-ShareAlike 4.0 Unported License.
//
// You should have received a copy of the license along with this
// work.  If not, see <http://creativecommons.org/licenses/by-sa/4.0/>.

/* [Main Dimensions] */

//width of device
width=150;
//height of step
heightOfStep=15;
//depth of device to slide properly
depthOfStep=12;
//numbero of steps
numberOfSteps=4;
//distance between tools
numberOfTools=10;
//diameter of  tools
toolDiameter=3.175;
//depth of tool  hole
toolDepth=13;
/* [Other Values] */

//just  for cleaner boolean  operations
tolerance=0.1;
//tolerance for tool diameter
toolDiameterTolerance=0.3;
//diametter of screw (screw head is  2.2*)
screwDiameter=4;
//screw  every  X each
screwEachTool=4;
//screw every each  step
screwEachStep=1;
//quality
$fn=30;

//calculations
step=(width)/(numberOfTools);

//cubeX is from here http://www.thingiverse.com/thing:112008

// Include here  for customizer compatibility
//
// Simple and fast corned cube!
// Anaximandro de Godinho.
//

module cubeX( size, radius=1, rounded=true, center=false )
{
	l = len( size );
	if( l == undef )
		_cubeX( size, size, size, radius, rounded, center );
	else
		_cubeX( size[0], size[1], size[2], radius, rounded, center );
}

module _cubeX( x, y, z, r, rounded, center )
{
	if( rounded )
		if( center )
			translate( [-x/2, -y/2, -z/2] )
			__cubeX( x, y, z, r );
		else
			__cubeX( x, y, z, r );
	else
		cube( [x, y, z], center );
}

module __cubeX(	x, y, z, r )
{
	//TODO: discount r.
	rC = r;
	hull()
	{
		translate( [rC, rC, rC] )
			sphere( r );
		translate( [rC, y-rC, rC] )
			sphere( r );
		translate( [rC, rC, z-rC] )
			sphere( r );
		translate( [rC, y-rC, z-rC] )
			sphere( r );

		translate( [x-rC, rC, rC] )
			sphere( r );
		translate( [x-rC, y-rC, rC] )
			sphere( r );
		translate( [x-rC, rC, z-rC] )
			sphere( r );
		translate( [x-rC, y-rC, z-rC] )
			sphere( r );
	}
}

// end of cubeX customizer compatibility

// holder itself

difference(){
    union(){
        for(i=[0:numberOfSteps-1]){
            translate([0,(depthOfStep-tolerance)*i,0])cubeX([width,depthOfStep,heightOfStep*(i+1)]);
        }
    }

    for(i=[0:numberOfSteps-1]){
        for(x=[step/2:step:(width)]){
            translate([x,(depthOfStep-tolerance)*i+depthOfStep/2,(heightOfStep*(i+1))+tolerance-toolDepth])cylinder(d=toolDiameter+toolDiameterTolerance,h=toolDepth);
            translate([x,(depthOfStep-tolerance)*i+depthOfStep/2,(heightOfStep*(i+1))+tolerance-toolDiameter])cylinder(d2=toolDiameter*1.5,d1=toolDiameter+toolDiameterTolerance,h=toolDiameter);
            translate([x,(depthOfStep-tolerance)*i+depthOfStep/2,(heightOfStep*(i+1))+tolerance-toolDiameter/2])cylinder(d2=toolDiameter*2,d1=toolDiameter,h=toolDiameter/2);
        }
    }

    for(i=[0:screwEachStep:numberOfSteps-1]){
        for(x=[step:step*screwEachTool:(width-step)]){
            rotate([-90,0,0]){
                translate([x,-heightOfStep/2-heightOfStep*i,(depthOfStep-2*tolerance)*i])cylinder(d=screwDiameter,h=depthOfStep*numberOfSteps);
                translate([x,-heightOfStep/2-heightOfStep*i,(depthOfStep-2*tolerance)*i])cylinder(d=screwDiameter*2.2,h=depthOfStep*(numberOfSteps-i-1));
                translate([x,-heightOfStep/2-heightOfStep*i,(depthOfStep-2*tolerance)*(numberOfSteps-1)])cylinder(d1=screwDiameter*2.2,d2=screwDiameter*1,h=screwDiameter);
            }
        }
    }

}

```


[User]
I'm looking to create a spool hub that allows me to connect two sides of a filament spool together using an elastic cord. I've seen some that are similar on Amazon (like the one at http://amzn.com/B00H7UX44A), but I want a design that's fully customizable through parameters in OpenSCAD.

Specifically, I need a hub that consists of a central shaft with a flange at each end. The shaft should pass through the center of a standard spool. I need to be able to adjust the following parameters:

*   **`shaftDiameter`**: The diameter of the central shaft that fits into the spool's core.
*   **`spoolShaftDiameter`**: The diameter of the flanges that sit against the spool sides.
*  **`shaftWallHeight`**: The height of the cylindrical shaft portion that extends out from the cap.
*   **`shaftWallWidth`**:  The width of the shaft walls, controlling how thick the cylindrical shaft portion is.
*   **`capThickness`**: The thickness of the flanges.
*   **`tieholeFromCenter`**: The distance from the center of the flange to the center of the tie holes.
*   **`tieslotDepth`**: The depth of the tie slots cut into the flange.
*   **`tieholeRotation`**: The rotation angle of the tie holes on the flange.
*   **`resolution`**: The resolution of the circular shapes (I'd like to use this to control `$fn`.)
*   **`slimmed`**:  A boolean (0 or 1) to indicate if the flanges have the slimmed down side sections.
*   **`showTieholes`**:  A boolean (0 or 1) to control if the tieholes and tieslots are shown.

The flanges should have tie holes and tie slots for securing the elastic cord. I'd like four tie holes equally spaced around each flange (every 90 degrees) with a rotation offset controlled by `tieholeRotation`. The tie slots should be at the end of the tieholes, extending from the holes inwards toward the center of the flange. Also, I need a `slimmed` option that, when enabled, cuts away some of the material on the flange to give the hub a more aerodynamic shape that only holds on to the side of the spool at the top and bottom. Finally, I need a `showTieholes` option that lets me hide the tieholes and slots for a cleaner look on the flanges.

Could you please generate an OpenSCAD file (or files, if that makes sense) with these features and parameters? I don't need any additional files or libraries to be included for now.

[Assistant]
Spool_Hub.scad:
```
shaftDiameter = 7.5;
spoolShaftDiameter = 51.5;
resolution = 180;
// frictionFit = 0;

slimmed = 1;
showTieholes = 1;

capThickness = 3;
tieholeRotation = 45;
tieslotDepth = .75;
tieholeFromCenter = 11.1;
shaftWallHeight = 12;
shaftWallWidth = 3;

/* assembly and positioning of the different pieces */
linear_extrude( height = tieslotDepth )
spoolHubCapSlice();

translate([0,0,tieslotDepth - 0.01])
linear_extrude( height = 0.01 + capThickness - tieslotDepth )
spoolHubCapSlice( tSlot = false );

translate([0,0,capThickness - 0.01])
linear_extrude( height = 0.01 + shaftWallHeight )
spoolCapShaft();
/* end assembly and positioning of the different pieces */

module tiehole(){
  if( showTieholes ){
    circle( r = 1.5, $fn = resolution );
  }
}
module tieslot(){
  if( showTieholes ){
    square( [sqrt( pow( tieholeFromCenter, 2 ) + pow( tieholeFromCenter, 2 ) ), 3], center = true );
  }
}
module slimSection( offset = 0 ) {
  width = 20;
  height = 15;

  translate([0, spoolShaftDiameter / 2 + width / 4 - offset,0])
  square([ spoolShaftDiameter, spoolShaftDiameter / 2], center = true);
}

module spoolHubCapSlice ( tHole = true, tSlot = true ) {
  difference() {
  // union() {

    // create initial hub cap
    circle( spoolShaftDiameter / 2 + 3, $fn = resolution );

    // put together all of the pieces to remove from the cap
    union() {

      // center hole
      circle( shaftDiameter / 2, $fn = resolution );

      // tie holes should penetrate the face of the hub
      for( tieholeRotationIndex = [0:3] ) {
        rotate([0,0,tieholeRotationIndex * 90 + tieholeRotation - 45 ])
        translate([tieholeFromCenter, 0]){
          tiehole();
        }
      }

      // tie slots should be cut into face of hub
      if( tSlot ) {
        for( tieslotRotationIndex = [0,180] ) {
          rotate([0, 0, 0 + tieslotRotationIndex + tieholeRotation - 45 ] ){
            translate([0, tieholeFromCenter]){
              rotate([0, 0, 45 ] ){
                translate([sqrt( pow( tieholeFromCenter, 2 ) + pow( tieholeFromCenter, 2 ) )/-2,0,0])
                tieslot();
              }
            }
          }
        }
      }

      // slice the layer to proper width
      if( slimmed ) {
        slimSection( -3 );
        mirror([0,1,0])
        slimSection( -3 );
      }
    }

  }
}

module spoolCapShaft() {
  difference() {

    // outer shaft
    difference() {
      circle( spoolShaftDiameter / 2, $fn = resolution );
      if( slimmed ) {
        slimSection( -3 );
        mirror([0,1,0])
        slimSection( -3 );
      }
    }

    // outer shaft
    difference() {
      circle( spoolShaftDiameter / 2 - shaftWallWidth, $fn = resolution );
      if( slimmed ) {
        slimSection( );
        mirror([0,1,0])
        slimSection( );
      }
    }

  }
}

```


[User]
Okay, so I'm looking to generate a kind of complex, abstract shape in OpenSCAD, and I'm not planning to 3D print it, so printing considerations aren't super important. I have a concept in mind already, which I'll explain, but I'd also like for the design to be fully parametric so I can easily tweak it later.

The base of the design is a simple rectangular prism or "cube" with a length that I will call `coreArmLength`, depth of `coreArmDepth`, and height of `coreArmHeight`. This cube is centered in the coordinate system so its origin is the middle of the cube. This will be used as a 'core arm' and be rotated around an axis to build the shape.

Next, I want to create a series of these 'core arms' rotated about their center along the z-axis, like a simple fan or asterisk. The number of these arms should be controllable using a variable I'll call `armsPerUnit`. Let's say there are `armsPerUnit` arms, these will be rotated evenly in a full circle (360 degrees) around the z-axis. I would like the entire set of rotated core arms to be encapsulated within a module called `createSpike`.

Finally, I want to create multiple instances of the `createSpike` arrangement, each rotated relative to each other around the x-axis and positioned in a circle around the y-axis, to build up the final shape, like spokes on a wheel. Let's control the number of these spikes with `unitCount`. These `unitCount` instances will also be evenly distributed along a 360 degree sweep. Each of these `createSpike` units should be translated from the center so that each "spike" is positioned away from the origin along the y-axis. The length of the translation along the y-axis should be `coreArmLength/2`.

I'd like all of this to be defined within a single SCAD file if possible, or as few files as possible. It's okay if this isn't the most efficient possible code, but I want it to be clear and easy to understand, if possible. It'd be great if you could make the following parameters be adjustable in the final code:

*   `coreArmLength` - the length of the base cube (core arm)
*   `coreArmDepth` - the depth of the base cube (core arm)
*   `coreArmHeight` - the height of the base cube (core arm)
*   `armsPerUnit` - number of core arms in each spike
*   `unitCount` - number of spikes to create

Do you have any questions about what I'm going for?

[Assistant]
abstract.scad:
```
coreArmLength = 50; //[10:50]
coreArmDepth = 5; //[1:10]
coreArmHeight = 5; //[1:10]
armsPerUnit = 4; //[1:15]
unitCount = 12; //[1:25]

module base(rotate=0) {

    rotate([0,0,rotate]){
    cube(size=[coreArmLength,coreArmDepth,coreArmHeight], center=true);
    }
}

module createSpike(step = 10) {
    for (a = [0 : step])
    base((180 / step) * a);
}

union() {
for (b = [0 : unitCount])
    rotate([(180/unitCount)*b,0,0]){
        translate([0,(coreArmLength/2),0])
        createSpike(armsPerUnit);
    }
};

```


[User]
I need an OpenSCAD design for a display holder, specifically for the RepRapDiscount Full Graphic Smart Controller. I've got an existing design that I'm using, but I'd really like a parametric version that's more flexible.

The basic design is a sort of angled stand with a few distinct sections. There's a main angled front part that supports the display, an upper body section that sits flat against the printer, and a lower body that extends down the side. Then there are smaller features like an upper and lower border and upper lip to help stabilize everything.

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

*   `height`: The overall height of the holder.
*   `display_angle`: The angle of the main display-supporting face (in degrees, probably between 40 and 80).
*   `hole_position`: Where to put mounting holes. Options should be "right", "left", "both", or "none".
*   `hole_diameter`: The diameter of the mounting holes.

I've attached the .scad file I'm currently using as a starting point (Display_Holder.scad), but feel free to reimplement it from scratch if that's easier for you. I'd also like the code to be well-commented for easier understanding.

I am not using any external libraries, but if you think they would be useful feel free to suggest using them and how they would help.

[Assistant]
Display_Holder.scad:
```
/*
 * Created by:
 * Thomas Buck <xythobuz@xythobuz.de> in March 2016
 *
 * Licensed under the Creative Commons - Attribution license.
 */

// -----------------------------------------------------------

$fn = 25;

height = 10;

// works properly from around 40 to 80 degrees
display_angle = 80; // in degrees

// "right", "left", "both" or "none"
hole_position = "both";
hole_diameter = 2.9;

// -----------------------------------------------------------

module holder() {
    // front part
    translate([10, 0, 0])
    difference() {
        translate([-13 + (5 * sin(display_angle - 45)),
                    -6 - (3 * sin(display_angle - 45)), 0])
            rotate([0, 0, display_angle])
            cube([13, 6, height]);

        // cut off top edge
        translate([-15, 5, 0])
            cube([10, 3, height]);
    }

    // upper body
    translate([0, 0, 0])
        cube([10, 5, height]);

    // lower body
    translate([5, -24, 0])
        cube([4, 24, height]);

    // upper border
    translate([10, 0, 0])
        cube([7, 5, height]);

    // upper lip
    translate([14, -5, 0])
        cube([3, 5, height]);

    // lower border
    translate([9, -24, 0])
        cube([3, 3, height]);
}

difference() {
    holder();

    // insert holes
    if ((hole_position == "right") || (hole_position == "both")) {
        rotate([0, 90, 90 + display_angle])
            translate([-8, -0.5 + (4 * sin(display_angle - 45)), -4])
            cylinder(d=hole_diameter, h=10);
    }
    if ((hole_position == "left") || (hole_position == "both")) {
        rotate([0, 90, 90 + display_angle])
            translate([-2, -0.5 + (4 * sin(display_angle - 45)), -4])
            cylinder(d=hole_diameter, h=10);
    }
}

```


[User]
I'd like a parametric OpenSCAD design for a vase. It should start with a base circle and then twist and expand as it goes up. I want to be able to control quite a few things:

*   **Base radius:** The starting radius of the vase.
*   **Wall thickness:** How thick the vase walls are.
*   **Number of sides:** How many sides the base circle polygon has.
*   **Number of slices:** How many vertical sections the vase is made of. More slices should make it look smoother.
*   **Angle shift per slice:** The amount the vase rotates at each slice, which controls the overall twist.
*   **Radius increase per slice:** How much the radius of the vase increases with each slice, controlling the overall flare.
*   **Height per slice:** The vertical distance of each slice.
*   **Height offset:** A small vertical offset between each layer of the vase.

I'm thinking it will use `linear_extrude` and `rotate` inside a `for` loop, and that I'll need to use `difference` to create the hollow part of the vase. I don't need anything particularly complicated in terms of libraries; just the base OpenSCAD functionality is fine.

[Assistant]
vase.scad:
```
vaseRadius = 15; //[5:20]
vaseWallThickness = 2; //[0.1:5]
vaseSides = 6; //[3:10]
slices = 50; //[5:200]
angleShiftPerSlide = 5; //[0.1:20]
radiusIncrease = 10; //[0:20]
heightPerSlice = 1;
heightOffset = 0.1;
sliceIncrease = radiusIncrease / slices;
echo(sliceIncrease);

linear_extrude(height = heightPerSlice, center = true, convexity = 10, twist = 0)
circle(vaseRadius, $fn=vaseSides);

for (a = [1:slices]) {
    translate([0,0,(1*a)])
    rotate([0,0,angleShiftPerSlide*a])
    difference() {
        linear_extrude(height = heightPerSlice + heightOffset, center = true, convexity = 10, twist = 0)
        circle(vaseRadius + (sliceIncrease * a), $fn=vaseSides);
        linear_extrude(height = heightPerSlice + heightOffset + heightOffset, center = true, convexity = 10, twist = 0)
        circle(vaseRadius - vaseWallThickness + (sliceIncrease * a), $fn=vaseSides);
    }
}

```


[User]
I need a parametric OpenSCAD design for a custom guard for the TRYM II beard trimmer. The stock guards are too short for my needs. I want to be able to specify the desired hair length in millimeters, and have the guard be created to match that length.

The base of the guard needs to interface with the trimmer itself, and that should be accurately replicated. I'm including the measurements I've taken and the design I've made in the scad file trym_guard.scad, so please use those measurements. I'm not looking for design improvements to the base of the guard, just an easily modifiable and parametric height for the teeth of the guard. I'd like to be able to easily modify the height of the teeth using a variable and have the guard build accordingly. It would be nice if it were a single file that generates both the base and the guard at the specified height, but I'm open to other suggestions if that's easier. I'd like the teeth to be solid; my current design has some issues with slicing so try to make the teeth buildable and solid instead of hollow, please. There's no need to include a text label like my design does, but it's fine if it's there by default, so long as I can remove it if need be.

I think I want the teeth design to follow the profile in my scad file, but I'm not too attached to any of the finer details of my current design, just the overall dimensions and the way it interfaces with the head of the trimmer and general shape of the teeth.

I'm not using any libraries, though it's fine to use them if they make things easier for you, but don't use any that require a third-party install.

[Assistant]
trym_guard.scad:
```
// A parametric guard for the Trym beard trimmer. The largest guard it comes with is 9mm which is
// not enough mms. This lets to have as many mms as you desire.
//
// First OpenSCAD project. Kind of a mess.

// The length to cut the hair in millimeters (measure twice, cut once though)
guard_height = 18;

/* Hidden */

base_width = 38.32;
base_length = 27.70+9.18;
base_thickness = 1.77;

base_notch_width= 11;
base_notch_length = 2.88;

root_width = 26.95;
root_height = 7.95-1.77+base_thickness;

module base_chamfer(dir) {
  translate([dir * (base_width/2), base_length/2, 0])
    rotate(a=dir*40, v=[0,0,1])
    cube([10.25, 10.25*2, base_thickness*2], center=true);
}

// Trym Guard Base
module trym_guard_base() {
  module base_core() {

    difference() {
      cube([base_width, base_length, base_thickness], center=true);
      union() {
        base_chamfer(1);
        base_chamfer(-1);
        translate([0, base_length/2, 0])
          cube([base_notch_width, base_notch_length*2, base_thickness*2], center=true);
      }
    }
  }

  module lock_tab() {
    lock_tab_offset = 1.97;
    lock_tab_width = 9.4;
    riser_length = 1.4;
    riser_height = 6.0;
    latch_sides = 1.25;

    translate([lock_tab_width/2, base_length/2+lock_tab_offset, -base_thickness/2])
      rotate(a=180, v=[0, 0, 1]) {
        cube([lock_tab_width, base_length, base_thickness]);
        difference() {
          translate([lock_tab_width/2, 0, 0]) cylinder(h=riser_height, d=lock_tab_width);
          union() {
            //translate([0, riser_length, base_thickness])
            //  cube([lock_tab_width, lock_tab_width, riser_height*2]);
            translate([0, -lock_tab_width-0.7, 0])
              cube([lock_tab_width, lock_tab_width, riser_height-riser_length]);
          }
        }
      }
  }

  module teeth_guard() {
    difference() {
      translate([0, -base_length/2 + root_width/2 - 8, -base_thickness/2+root_height/2])
        cube([base_width, root_width, root_height], center=true);
      union() {
        translate([0, -base_length/2-2, base_thickness/2+root_height/2+3.5])
          rotate(a=45, v=[1, 0, 0])
          cube([base_width, root_width, root_height], center=true);
      }
    }
  }

  translate([0, 0, base_thickness/2]) {
    difference() {
      union() {
        base_core();
        lock_tab();
        teeth_guard();
      }
      union() {
        for(i=[0:6]) {
          tooth_area_width = base_width-4;
          translate([tooth_area_width/2 - tooth_area_width/7*i - tooth_area_width/7/2, -base_length/2, root_height/2-base_thickness/2])
            cube([tooth_area_width/9, 9.18*2, 50], center=true);
        }
      }
    }
  }
}

head_length = 34.6;
head_width = 34.6;
head_thickness = 2.65;
module trym_head() {
  difference() {
    union() {
      translate([0, 1.1/4, 0]) cube([head_width, head_length-1.1/2, head_thickness], center=true);
      difference() {
        translate([0, 0.25, head_thickness/2+1/2])
          cube([head_width, head_length-0.5, 1], center=true);
        translate([-head_width/2, -head_length/2+0.5, head_thickness/2])
          rotate(a=45, v=[1, 0, 0])
          cube([head_width, 3, 3]);
      }
      translate([0, 0.75, head_thickness/2+1+10]) cube([head_width, head_length-1.5, 20], center=true);
      translate([0, -head_length/2 + 1, 0.15]) rotate(a=90, v=[0, 1, 0]) cylinder(d=2.6, h=head_width, center=true, $fn=20);
    }
    union() {
      translate([0, -head_length/2-0.3, 0])
        rotate(a=-10, v=[1, 0, 0])
        translate([-head_width/2, 0, -head_thickness-0.2])
        cube([head_width, 8.47+0.4, 3]);
      notch_depth = 0.9;
      notch_width = 9.5;
      translate([0, head_width/2-notch_depth/2, head_thickness/2+1]) cube([notch_width, notch_depth, 1], center=true);
    }
  }
}

module trym_base() {
  difference() {
    trym_guard_base();
    translate([0, 1.7, base_thickness + head_thickness/2])
      scale([1.02, 1.02, 1]) // wiggle room on the sides
      trym_head();
  }
}

module trym_teeth(height) {
  adjusted_height=height-2.4;
  rotate(a=180, v=[1, 0, 0])
    difference() {
      union() {
        difference() {
          union() {
            guard_base_length = 32;
            translate([0,5,0])
              rotate(a=90, v=[0, 0, 1])
              rotate(a=90, v=[1, 0, 0])
              translate([0,0,-base_width/2])
              linear_extrude(height=base_width) {
                // The "0.7" is the skew value; pushed along the y axis
                M = [ [ 1, 0.7, 0],
                  [ 0, 1, 0],
                  [ 0, 0, 1] ] ;
                multmatrix(M)
                  polygon([[0,0],
                      [-guard_base_length+2.45,0],
                      [-guard_base_length,-adjusted_height+5.5],
                      [-guard_base_length*0.75,-adjusted_height+3],
                      [-guard_base_length*0.50,-adjusted_height+1],
                      [-guard_base_length*0.25,-adjusted_height],
                      [-guard_base_length*0.08,-adjusted_height],
                      [-guard_base_length*0.06,-adjusted_height+0.3],
                      [-guard_base_length*0.04,-adjusted_height+0.7],
                      [0,-adjusted_height+3]]);

              }
            translate([0, 0, -1/2]) {
              difference() {
                cube([base_width, base_length, 1], center=true);
                union() {
                  base_chamfer(1);
                  base_chamfer(-1);
                  translate([0, base_length/2, 0])
                    cube([base_notch_width, base_notch_length*2, base_thickness*2], center=true);
                }
              }
            }
          }
          union() {
            for(i=[0:6]) {
              tooth_area_width = base_width-4;
              translate([tooth_area_width/2 - tooth_area_width/7*i - tooth_area_width/7/2, -base_length/2 - (9.18*18/2), root_height/2-base_thickness/2])
                cube([tooth_area_width/9, 9.18*20, 100], center=true);
              translate([tooth_area_width/2 - tooth_area_width/7*i - tooth_area_width/7/2, 0, -height/2-1])
                cube([tooth_area_width/9, height*2, height], center=true);
            }
          }
        }
        // text
        rotate(a=180, v=[0, 1, 0])
          translate([0, 10, 0])
          linear_extrude(height=base_thickness)
          rotate(a=180, v=[0, 0, 1])
          text(text = str(height, "mm"), font="Impact:style=Bold", size=7, halign="center", valign="center");
      }
      trym_base();
    }
}

trym_base();
translate([0, 50, 0]) trym_teeth(guard_height);

```


[User]
I'm looking to design a connector board that lets me easily connect dev boards to header pins without soldering. The current design I have is pretty basic, just a block with holes, but I'd like something more robust and parametric.

Here's the idea:

I need a board with a configurable number of pin rows and pins per row. The pins will be 2.54mm pitch (standard header pin spacing). For each pin, I need two cylindrical holes. These holes should be slightly offset from the center of the pin location, and I want to be able to control the diameter of the holes as well as their offset. This way, the pin will sit securely between the holes. The holes should also run the entire thickness of the board. The board itself should be a rectangular block just large enough to contain all the pins with some padding all around. I also want to control the thickness of the board.

To make it easier to connect things, I'd also like the board to have some sort of "ledge" or "lip" around the edge that extends beyond the holes, like a bit of an overhang, so that the dev board can sit against it. This lip should be configurable as well, for both thickness and how far it extends. It would also be helpful to be able to adjust the clearance (space) between the pins and the edges of the board, so that the user can have extra room around the pins to grab and place items.

Here are the parameters I'd like to control:

*   `pins`: Number of pins in a row
*   `rows`: Number of rows of pins
*   `board_thickness`: Thickness of the main board block
*   `hole_diameter`: Diameter of the cylindrical holes
*   `hole_offset`: Distance of each hole from the center of the pin location. (The holes should be mirrored from each other across the center of the pin)
*   `wall_thickness`: Thickness of the border around the board, that is, the border of the flat surface which contains the holes.
*   `ledge_thickness`: Thickness of the ledge (lip) around the edge.
*   `ledge_extension`: How far the ledge extends outwards from the board edges
*   `pin_clearance`: the space between the outermost pins and the edge of the board (before the wall)

I'm hoping to get an OpenSCAD file that will let me tweak these values and generate the board. I'm not using any specific libraries right now, so any vanilla OpenSCAD will do. Could you help me out with that?

[Assistant]
pin-connector-gpio-board.scad:
```
/*
 *  pin-connector-gpio-board.scad
 *  2016 by http://www.thingiverse.com/roha/
 */

pins = 20; // [1:100]
rows = 2; // [1:100]
hight = 6; // [1:20]
hole = 75; // [50:200]
wall = 3; // [1:30]

difference() {
  translate([-wall/10,-wall/10,0])
  cube([2.54*pins+2*wall/10,2.54*rows+2*wall/10,hight]);
  union() {
    for (iR = [1:rows]) {
      for (iP = [1:pins]) {
        color("red")
        translate([-2.54/2+2.54*iP,-2.54/2-hole/100/3+2.54*iR,0])
        cylinder(hight,hole/100,hole/100,$fs=0.1);
        color("green")
        translate([-2.54/2+2.54*iP,-2.54/2+hole/100/3+2.54*iR,0])
        cylinder(hight,hole/100,hole/100,$fs=0.1);
      }
    }
  }
}

```


[User]
I'd like to design a parametric zen garden rake, suitable for a miniature garden or even a sandpit. I want the design to be flexible enough to easily adjust the number of tines/spokes, the length of the tines and handle, the handle angle, and the spoke radius to accommodate things like wooden chopsticks as tines. I'm thinking that these elements would be connected through the main body of the rake.

Here's what I have in mind:

**Rake Body:**
*   The main body of the rake will have a central section with a hole for attaching the handle, and then a number of equally spaced 'teeth' or tines that protrude from that center section.
*   Each 'tooth' should also have a circular hole to accommodate the tines.
*   The number of teeth should be a parameter I can modify.
*   There should be a parameter to control the spacing between teeth.
*   There should be a parameter for the overall size of the main "center" section of the body.

**Rake Tines (Spokes):**
*   The rake tines should be cylindrical.
*   The length of the tines should be a parameter.
*   The radius of the tines should be a parameter. I want to be able to scale this down to accommodate things like thin wooden chopsticks (radius around 0.25cm or diameter 0.5cm).
*  The tines should also each have a sphere at the end. The radius of the sphere should match the radius of the cylinder.

**Rake Handle:**
*   The handle should also be cylindrical.
*   The length of the handle should be a parameter.
*   The radius of the handle should be a parameter, and it should match the radii of the tines (I also want to use chopsticks here)
*   The angle at which the handle comes off the main body of the rake should be a parameter. This angle is relative to the "teeth" of the rake.
* There should be an option to add a sphere to the handle end, similar to the tines, also of a matching radius.
* I want a hole for the handle to attach to the rake main body.

**Parameters I need to be able to control:**

*   `numberOfTines` (integer): The number of rake tines/teeth.
*   `tineLength` (float): The length of the tines.
*   `tineRadius` (float): The radius of the tines.
*   `handleLength` (float): The length of the handle.
*  `handleRadius` (float): The radius of the handle.
*   `handleAngle` (float): The angle of the handle relative to the plane of the rake teeth.
*  `spacingBetweenTines` (float): spacing between the rake teeth
*  `baseCubeSize` (float): overall size of the main "center" section of the rake body

I think using `minkowski()` on cubes and cylinders will help make the design smooth.

I am not including any libraries in the request, but am happy to add in some later as I see fit.

Could you please provide the OpenSCAD code for this?

[Assistant]
zenGardenRakeHandle.scad:
```

$fn=50;
cubeSize = 100;
halfCube = cubeSize/2;
holeRadius = 25;
numberOfAdditionalHoles = 6;
spacingBetweenRakeHoles = 20;
angleOfRakeHandle=50;
rakeSpokeLength = 400;
rakeHandleLength = 800;

rakeWidth =  (numberOfAdditionalHoles *(cubeSize+spacingBetweenRakeHoles) - spacingBetweenRakeHoles);

module rake_with_hole(){
//RAKE WITH HOLE MODULE
translate([0,0,halfCube])
difference(){
    //BASE CUBE
    minkowski()
    {
        cube(cubeSize, center =true);
        rotate([90,0, 90]){
            cylinder(r=5,h=1);
        }
    }
    //HOLE
    color("blue") cylinder (cubeSize *2, holeRadius , holeRadius, true);
}
}
module rake_without_hole(){
//RAKE WITH HOLE MODULE
translate([0,-halfCube ,0 ])
    //BASE CUBE
    minkowski()
    {
        cube([spacingBetweenRakeHoles,cubeSize,cubeSize ], center =false);
        rotate([90,0, 90]){
            cylinder(r=5,h=1);
        }
    }
}

moduleLength = cubeSize+spacingBetweenRakeHoles;
module rake_body(){
rake_with_hole();
for(i=[1:numberOfAdditionalHoles]){
    translate([halfCube + (i-1)*(cubeSize+spacingBetweenRakeHoles),0,0])
        rake_without_hole();
    translate([spacingBetweenRakeHoles+cubeSize+ (i-1)*(cubeSize+spacingBetweenRakeHoles),0,0])rake_with_hole();
}
}

module spokes(){
    if(rakeSpokeLength >0){
for(i=[0:numberOfAdditionalHoles]){
translate ([i* (cubeSize+spacingBetweenRakeHoles+5),2*cubeSize, 0]){
    cylinder (rakeSpokeLength, holeRadius, holeRadius, false);
    translate([0,0,rakeSpokeLength]) sphere (holeRadius);
}}}}

module handle(){
    if(rakeHandleLength > 0){
translate ([0, -2*cubeSize, holeRadius]) {
    difference(){
        union(){
        rotate([0,90,0]) cylinder (rakeHandleLength, holeRadius, holeRadius);
        sphere(holeRadius);
    }

        cylinder(cubeSize, holeRadius/2, holeRadius/2, true);
    }}
}}

handle();
spokes();
difference(){
    //BODY
    union(){
    rake_body();
    //attachment to rake handle
    translate([rakeWidth/2, 0, cubeSize+halfCube])
    minkowski()
        {
            cube(cubeSize, center =true);
            rotate([90,0, 90]){
                cylinder(r=5,h=1);
            }
        }
    }
    //SUBTRACT HOLE FOR HANDLE
    translate([rakeWidth/2, 0, cubeSize+halfCube])
    rotate([angleOfRakeHandle,0,0]) cylinder(cubeSize*2, holeRadius, holeRadius, true);
}

```


[User]
I'm looking to create a wall art piece similar to the one in the Ex Machina movie, specifically the circular designs. I'd like it to be a parametric design that I can customize, and be able to project light through it to create shadows.

The basic element should be a circle with three smaller circles cut out from it, arranged in a triangle around its center. Think like a rounded Y shape repeated in a circle. I need to control the radii of both the outer circle and the cut-out circles, as well as the thickness of the material.

I want to arrange these elements in a grid pattern. The grid should be customizable in terms of the number of rows and columns. Also, the spacing between the elements on the grid should also be adjustable.

Finally, and this is important, I'd like to have two grids overlaid on top of each other, offset from each other. This creates a moire effect. I should be able to control the amount of offset.

I'd like the code to be in OpenSCAD and ideally, it should be well-organized and commented so that I can easily understand and modify it later. I don't need any external libraries for this, just the standard OpenSCAD functionality.

[Assistant]
ex_machina_wall_art_projection.scad:
```
how_many_rows=10;
how_many_columns=10;
thickness=0.1;
outer_radius =1.5;
/* [Hidden] */
module draw_cylinder(radius,inithick){
    cylinder(r=radius,h=inithick);
}
$fn=30;
rad = outer_radius;
module draw_arm()
{
    trans = rad;
    cuttout_rad=rad*.8;
      difference(){
          draw_cylinder(rad,thickness);
          for(i=[1:3]){
              rotate([0,0,i*120]){
                  translate([trans,0,0]){
                      draw_cylinder(    cuttout_rad,thickness*1.1);
                  }
              }
          }

      }

}
size_x = 1;
size_y = 1;

steps_x = rad;
steps_y = rad*1.75;

max_x = steps_x*size_x;
max_y = steps_y*size_y;

start_x = 0;
start_y = 0;

module draw_row(){
    for(i=[start_x:steps_x:steps_x*how_many_columns])
    {

                translate([i,0,0])
                draw_arm();

    }
}

// Draw a set of rows
module draw_matrix(){

    for(j=[0:steps_y:how_many_rows*steps_y])
{

        translate([0,j,0])
            draw_row();
}

}
union(){
draw_matrix();
translate([steps_x/2,steps_y/2,0])
    {
        draw_matrix();
    }

    }
/*
for(j=[steps_y/2:steps_y:5]){
       translate([steps_x/2,j,0])
            draw_row();
}
    */
```