[User]
Okay, I'd like to design a parametric drinks tag that I can print for parties. It should have a hook to hang on a glass, a space for a name, and be customizable in size.

Here are the details I'm looking for:

*   **General Shape:** The tag should have a main rectangular body with a rounded corner on the right hand side, and a circular hook on the left hand side. The connection between the main body and the hook should also be rounded.
*   **Hook:** The hook should be a simple circle of material with a circular cut-out in the center, making it a "C" shape that can slide over a glass edge.
*   **Text:** The tag should have a space for text (the person's name) that's extruded outwards. This will sit on the main rectangular body.
*   **Parameters (that I can change in the file):**
    *   `tag_thickness`: The thickness of the tag itself.
    *   `hook_diameter`: The inner diameter of the hook.
    *   `hook_width`: The thickness of the hook material.
    *   `letter_size`: The size of the text.
    *   `label_text_box`: The text to put on the tag.
    *   `tag_length`: The overall length of the rectangular body of the tag.
    *   `fillet`: The radius of the rounded corners on the right hand side of the main body.
*   **Libraries:** I don't think I'll need any extra libraries, just regular OpenSCAD primitives.
*   **Units:** I'm working in millimeters.

I think that's everything. I'm happy to answer any questions you might have.

[Assistant]
drink_name_tag.scad:
```

echo(version=version());

font = "Liberation Sans";

//thickness of the name tag
tt_numerical_slider=2;// [1:4]
tag_thickness=tt_numerical_slider;

//internal diameter of the hook
hd_numerical_slider=10;// [5:15]
hook_diameter=hd_numerical_slider;

//width of the hook material
hw_numerical_slider=4;// [2:6]
hook_width=hw_numerical_slider;

//font size
ls_numerical_slider=10;// [3:20]
letter_size=ls_numerical_slider;

//name to go on the tag
label_text_box="SSaggers";
label=label_text_box;

//length of the tag
l_text_box=70;
tag_length=l_text_box;

//radius of the fillet (rounding of the corners
f_text_box=3;
fillet=f_text_box;

tag_width = hook_diameter+2*hook_width;

difference(){
  union() {

      difference(){
                  cube(size = [tag_length+tag_width/2,tag_width,              tag_thickness], center = false);  //main tag

                    union(){ //generate geometry for corner fillets
                        difference(){
                            translate([tag_length+tag_width/2-fillet,0,0])cube(size = [fillet,fillet,tag_thickness],center = false);

                            translate([tag_length+tag_width/2-fillet,fillet,0])cylinder(h = tag_thickness, d=fillet*2, center = false);
                        }
                        difference(){
                            translate([tag_length+tag_width/2-fillet,tag_width-fillet,0])cube(size = [fillet,fillet,tag_thickness], center = false);

                            translate([tag_length+tag_width/2-fillet,tag_width-fillet,0])cylinder(h = tag_thickness, d=fillet*2, center = false);
                        }
                    }
      }
    translate([0,tag_width/2,0])cylinder(h = tag_thickness, d=tag_width, center = false); //main round for hook

  }
union() { //cut out text
   translate([hook_diameter+hook_width,tag_width/2,0.5])linear_extrude(height = tag_thickness) {
       text(text = label, font = font, size = letter_size, valign = "center");
     }

    translate([0,tag_width/2,0])cylinder(h = tag_thickness, d=hook_diameter, center = false);

cube(size = [hook_diameter,hook_diameter+hook_width,tag_thickness], center = false);

}
}

difference(){ //generate internal fillet to smooth hook
    translate([hook_diameter/2,tag_width/2,0])cube(size = [hook_diameter/2,hook_diameter/2,tag_thickness], center = false);

    translate([hook_diameter/2,tag_width/2,0])cylinder(h = tag_thickness, d=hook_diameter, center = false);
}

```


[User] I'm looking to generate a Möbius strip in OpenSCAD, and I'd like it to be parametrically defined. I want to be able to easily adjust the thickness, diameter, and width of the strip. I'm comfortable with using a function for the mobius parameterization. Specifically, I would like to define functions for the position on the surface and the normal to the surface at the position. This should include parametric expressions. The generated file(s) should generate a solid Möbius strip, so they should have the ability to generate the inner surface and the outer surface. I'd like the strip to be constructed from quadrilateral polygons. I'd prefer for the strip to be as smooth as practical, while still maintaining performance when rendering the model. I'm looking for an efficient and easy to understand implementation of the mobius band. Can you help me with that? I don't need any example stl files. I don't have any preference for a particular scad library, so please pick the one you think makes sense.

[Assistant]
Mobius.scad:
```

// Number of divisions
ns = 50;

// of the shell (in your drawing/model units. e.g. mm)
Thickness= 10;

// measured at the mid-curve of the surface (in your drawing/model units. e.g. mm)
Diameter = 50;

// (in your drawing/model units. e.g. mm)
Width = 20;

/*
    Parametrized equations:
        x(u,v)=(1+v/2*cos(u/2))*cos(u)
        y(u,v)=(1+v/2*cos(u/2))*sin(u)
        z(u,v)=v/2*sin(u/2)
    with
        0<=u<2*PI
        -1<=v<=1
*/

Mobius();

module Mobius(){
    for (i=[1:ns])
    {
        ang1=360/ns*(i-1);
        ang2=360/ns*(i);
        v=Width/Diameter;
        PM=[pMb( v,ang1)+nMb( v,ang1)*Thickness/2,
            pMb(-v,ang1)+nMb(-v,ang1)*Thickness/2,
            pMb( v,ang2)+nMb( v,ang2)*Thickness/2,
            pMb(-v,ang2)+nMb(-v,ang2)*Thickness/2,
            pMb( v,ang1)-nMb( v,ang1)*Thickness/2,
            pMb(-v,ang1)-nMb(-v,ang1)*Thickness/2,
            pMb( v,ang2)-nMb( v,ang2)*Thickness/2,
            pMb(-v,ang2)-nMb(-v,ang2)*Thickness/2,
        ];
        polyhedron(points=PM,
        faces=[[0,1,5,4],[2,0,4,6],[3,2,6,7],[1,3,7,5],[0,2,3,1],[4,5,7,6]]);
    }
}

function pMb(v,ang)=[
        Diameter*(1+v/2*cos(ang/2))*cos(ang),
        Diameter*(1+v/2*cos(ang/2))*sin(ang),
        Diameter*v/2*sin(ang/2)
        ];
function puMb(v,ang)=[
        (-v/4*sin(ang/2))*cos(ang)-(1+v/2*cos(ang/2))*sin(ang),
        (-v/4*sin(ang/2))*cos(ang)+(1+v/2*cos(ang/2))*cos(ang),
        v/4*cos(ang/2)
        ];
function pvMb(v,ang)=[
        1/2*cos(ang/2)*cos(ang),
        1/2*cos(ang/2)*sin(ang),
        1/2*sin(ang/2)
        ];
function nMb(v,ang)=
        cross(puMb(v,ang),pvMb(v,ang))/norm(cross(puMb(v,ang),pvMb(v,ang)));

```


[User]
Hey, I'm looking to create a parametric bookshelf design that can be cut with a CNC machine. I've seen some cool spherical shelf designs and I'd like to try and make my own. I'm thinking of a design that has shelves that protrude out of a wall, and the visible portion looks like it is part of a sphere.

Here's what I'm envisioning:

*   The design should be based around a sphere, but only the outer portion would be visible when mounted to a wall.
*   I need to be able to set the radius of this visible part of the sphere on the wall.
*   I need to define the depth of the shelves sticking out from the wall.
*   I need to be able to control the thickness of the material being used.
*   The design will use multiple horizontal shelves, and I need to be able to set how many there are.
*   I also need to account for material loss during cutting, like with a laser cutter (kerf)
*   I also need to be able to add an overcut value to the outline for a CNC mill
*   Finally, I need two outputs: a 3D view and a flat layout for cutting (DXF export).

So, could you create a parametric OpenSCAD file (or files if that makes more sense) for this type of design? I'm hoping to easily adjust parameters like the wall radius, shelf depth, material thickness, number of shelves, cut loss, overcut for milling and output a flat template suitable for CNC cutting. I'm comfortable using modules within OpenSCAD, and I don't need to be talked through every line of code! Thanks in advance!

[Assistant]
bookshelf.scad:
```
// parametric bookshelf
// by Jaap
//
//radius of the visible part of the sphere
wall_radius = 400;//[10:2000]
// thickness of the material
mat_thickness = 9.0;//[2:30]
// how far it sticks out of the wall
shelve_depth = 200;//[1:1000]
// number of shelves
shelves = 6;//[1:30]
// cut loss (for laser cutting)
cut_loss = 0.0;
// overcut radius for cnc milling (1/2 mill thickness)
overcut = 0;//[0:15]
// 3D view or DXF output
3dview = 1;//[0:1]

// calculations
sd = shelve_depth;
rv = wall_radius;		// visible radius on wall
r = (pow(rv,2)+pow(sd,2)) / (2 * sd); // sphere radius
h = mat_thickness-cut_loss;	// material heigth in drawing

// openscad precision settings
$fn=30 *1;

// definitions
HORIZ = true;
VERT = false;

module outline() { // debug: draw a sphere
	translate([0,0,rv]) {
		difference() {
			translate([-r+sd,0,0]) sphere(r);
			translate([-2-r*2,-r-1,-r-1]) cube([2+r*2,2+r*2,2+r*2]);
		}
	}
}

module slice(z,step,out) {
rh = sqrt(pow(r,2)-pow(rv-z,2));	// radius slice on current height
cd = r-sd; // center distance: distance radius to x=0
translate([-cd,0,0]) difference() {
	cylinder(h, rh, rh, true);
	translate([-2*rh+cd,-rh,-1-h/2]) cube([rh*2,rh*2,h+2]);
	for (s=[step/2:step:rv*2]) {
		xoffs = (sqrt(pow(rh,2)-pow(s-rv,2))-cd)/2; // half depth
		xv = out ? cd-1 : cd+xoffs-overcut; // inner or outer?
		xt = out ? xoffs + 1 + overcut : xoffs * 2 + overcut;
		translate([xv,-rv+s-h/2,-1-h/2]) cube([xt,h,h+2]);
	}
  }
}

module sphereit() { // show in 3D
	step = (rv*2)/shelves;
	for(z=[step/2:step:rv*2]) {
		translate([0,0,z]) slice(z,step,HORIZ);
		translate([0,z-rv,rv]) rotate([90,0,0]) slice(z,step,VERT);
	}
}
module flatout() { // show in flat plate for cutting (DXF)
	projection(cut=true) {
		step = (rv*2)/shelves;
		for(z=[step/2:step:rv*2]) {
			translate([z*3,0,0]) slice(z,step,HORIZ);
			translate([z*3,rv*2,0]) slice(z,step,VERT);
		}
	}
}
//outline();
if (3dview) sphereit();
else flatout();
//flatout();

```


[User]
I need a new OpenSCAD design for quick-change brackets for a 3D printer heated bed. I'm tired of using binder clips! These brackets should hold the build plate down flush and out of the way of the nozzle and fan duct, and they need to be easy to use for quickly swapping the plate.

Here's what I'm picturing: the design will have two types of brackets, essentially mirror images of each other. One type will have the mounting slots running parallel to the X-axis of the bed, and the other type will have the slots parallel to the Y-axis. These brackets will each have a stop arm that is perpendicular to the mounting slot to stop the build plate from sliding past. Each bracket will have two mounting slots. Also, there should be an eccentric retainer for each mounting slot that goes on top of the bracket and hold the build plate down securely. I’d also like to customize a few parameters like the bed mounting hole distance and the platen thickness, as well as some of the sizes and thicknesses of the brackets themselves.

The design should use the BOSL2 library and should provide the following parameters:

*   `bed_y_mount_height`: This is the center-to-center distance between the bed mounting holes along the Y-axis. (e.g., 209mm for an MK2)
*   `platen_thick`: The thickness of the build plate.
*   `slot_length`: The length of the adjustment slots on the brackets.
*   `wall_thick`: The wall thickness between the holes and edges of the brackets.
*   `hole_diam`: The diameter of the thru-holes for mounting screws.
*   `stop_length`: The length of the stop arm on the bracket.
*   `eccentric_diam`: The diameter of the eccentric retainer.
*   `eccentric_thick`: The thickness of the eccentric retainer.

The design should include modules for:

*   `xbracket()`: generates the bracket with slots parallel to the X-axis.
*   `ybracket()`: generates the bracket with slots parallel to the Y-axis.
*   `slot()`: a module for creating the adjustment slots on the brackets.
*   `eccentric()`: generates the eccentric retainer.
*   `all_geom()`: positions all the brackets for the build plate, along with eccentrics for holding it down, and for previewing.
*   `print_part()`: Selectable module for exporting individual parts (xbracket, ybracket, eccentric) or all parts at once.

I think that should cover all of the necessary parameters for easy customization. Let me know if anything is unclear.

[Assistant]
Customizable_RepRap-bed-platen-quick-change-brackets.scad:
```
// Copyright 2015 Arthur Davis (thingiverse.com/artdavis)
// This file is licensed under a Creative Commons Attribution 4.0
// International License.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

// Occasionally my nozzle or fan duct will crash into one of the
// binder clips securing down my platen. These customizable flush
// mount brackets hold the platen down while staying out of the
// way. Also it's much quicker installing and removing the platen
// with these brackets; two eccentric retainers just need to be
// rotated out of the way allowing the platen to easily lift out.
//
// While using the customizer, you may select each individual
// part to preview using the "Part" drop down menu which is
// available in all tabs. To have a zoomed in view of an individual
// part go to the [Build plate] tab and set the "Show Build Plate"
// dropdown to "No". You may also tweak the display of the build plate
// here in accordance with your own printer platform.
//
// Set "bed_y_mount_height" equal to the nominal center to center
// distance of the bed mounting holes in the y-axis. The default of
// 209mm works for the MK2 (http://reprap.org/wiki/PCB_Heatbed)
//
// Measure the thickness of your build platen and set "platen_thick"
// equal to this value. The default value of 2.4mm works for a 3/32"
// plate.
//
// The brackets are naturally larger than your platen so they'll
// need to be oriented diagonally when printing in order to fit.
//
// To assemble, orient the long edges of the brackets prallel to the
// Y-axis and arrange the short edges (the stops) kitty-corner each
// other. Put an eccentric retainer over each mount slot and affix to
// the bed as usual. Preferably use button cap screws to minimize
// the Z protrusion.
//
// If the plastic eccentrics stops are too flimsy to secure your platen
// you can try printing them thicker by addjusting the "eccentric_thick"
// value. Alternatively, reinforcing the eccentrics stops with fender
// washers works well. If any of the corners are still not securely held
// in place, just build up that corner of the platen with several layers
// of tape.
//
// The brackets should be snug against the platen on all four sides.
// The eccentric retainers will hold the platen down. To quickly remove
// the platen turn the front two eccentrics to release the platen then
// lift up and slide it out.

// Units are in mm

// Optimize view for Makerbot Customizer:
// preview[view:"south west", tile:"top"]

/* [Global] */
// Choose geometry to preview:
part = "All"; // [Bracket_Xslot, Bracket_Yslot, Eccentric, All]

/* [Config] */
// Bed center to center mounting hole height (in y-axis)
bed_y_mount_height = 209; // [100:420]
// Thickness of the print platen
platen_thick = 2.4; // [1:0.1:15]
// Length of the slots for bracket postion adjustment
slot_length = 6; // [3:0.5:10]
// Wall thickness between holes and edges
wall_thick = 1.5; // [1:0.5:6]
// Thru-hole diameter for screw hardware
hole_diam = 3.4; // [2:0.1:5]
// Length of the bracket stop arm
stop_length = 40; // [10:200]
// Diameter of the eccentric retainer
eccentric_diam = 18; // [10:30]
// Thickness of the eccentric retainer
eccentric_thick = 1.0; // [0.2:0.1:3.0]

/* [Build Plate] */
use <utils/build_plate.scad>;
// Show build plate?
show_build_plate = "Yes"; // [Yes, No]
// For display only, doesn't contribute to final object
build_plate_selector = 3; //[0:Replicator 2,1: Replicator,2:Thingomatic,3:Manual]
//For "Manual" option: Build plate x dimension
build_plate_manual_x = 200; //[100:400]
//For "Manual" option: Build plate y dimension
build_plate_manual_y = 200; //[100:400]
if (show_build_plate == "Yes") {
    build_plate(build_plate_selector,build_plate_manual_x,build_plate_manual_y);
}

/* [Hidden] */
// Herein variable definitons hidden from Customizer
delta = 0.01; // CSG overlap tolerance
x_width = slot_length + 2 * wall_thick;
x_height = hole_diam + 2 * wall_thick;
y_width = x_height;
y_height = x_width;
xbracket_height = bed_y_mount_height + x_height;
ybracket_height = bed_y_mount_height + y_height;

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
module xbracket() {
    translate([0, 0, platen_thick/2]) {
    difference() {
        union() {
            cube([x_width, xbracket_height, platen_thick], center=true);
            translate([(stop_length+x_width-delta)/2,
                       (xbracket_height-x_height)/2, 0])
                cube([stop_length + delta,
                      x_height, platen_thick], center=true);
        }
        translate([0, bed_y_mount_height/2, 0])
            slot();
        translate([0, -bed_y_mount_height/2, 0])
            slot();
    }}
}

module ybracket() {
    translate([0, 0, platen_thick/2]) {
    difference() {
        union() {
            cube([y_width, ybracket_height, platen_thick], center=true);
            translate([-(stop_length+y_width-delta)/2,
                       -(ybracket_height-y_height)/2, 0])
                cube([stop_length + delta,
                      y_height, platen_thick], center=true);
        }
        translate([0, bed_y_mount_height/2, 0]) {
            rotate([0, 0, 90])
            slot();
        }
        translate([0, -bed_y_mount_height/2, 0]) {
            rotate([0, 0, 90])
            slot();
        }
    }}
}

module slot(w=slot_length, d=hole_diam, t=2*platen_thick) {
    union() {
        cube([w-d, d, t], center=true);
        translate([(w-d)/2, 0, 0])
            cylinder(h=t, d=d, center=true, $fn=100);
        translate([-(w-d)/2, 0, 0])
            cylinder(h=t, d=d, center=true, $fn=100);
    }
}

module eccentric() {
    translate([0, 0, eccentric_thick/2]) {
        difference() {
            cylinder(h=eccentric_thick, d=eccentric_diam, center=true, $fn=100);
            translate([-(eccentric_diam - hole_diam)/2 + wall_thick, 0, 0])
                cylinder(h=2*eccentric_thick, d=hole_diam, center=true, $fn=100);
        }
    }
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

module all_geom() {
    rotate([0, 0, -40])
    {
        translate([-x_width, 0, 0])
            xbracket();
        translate([0, -y_height, 0])
            rotate([0, 0, 180])
            ybracket();
    }
    translate([3*eccentric_diam/2, 0, 0]) {
        eccentric();
        translate([3*eccentric_diam/2, 0, 0])
            eccentric();
    }
    translate([0, -3*eccentric_diam/2, 0])
        eccentric();
    translate([3*eccentric_diam/2, -3*eccentric_diam/2, 0])
        eccentric();
}

// Allow MakerBot Customizer to generate STL based on part selection
module print_part() {
    if (part == "Bracket_Xslot") {
        rotate([0, 0, -40])
            xbracket();
    } else if (part == "Bracket_Yslot") {
        rotate([0, 0, -40])
            ybracket();
    } else if (part == "Eccentric") {
        eccentric();
    } else if (part == "All") {
        all_geom();
    } else {
        all_geom();
    }
}

// For running in native OpenSCAD
//show_build_plate = "No"; // Default is Yes
//part = "Bracket_Xslot";
//part = "Bracket_Yslot";
//part = "Eccentric";
//part = "All";
print_part();

```


[User]
I'm looking to create a card organizer, both for in-box storage and tabletop use, and I'd like to use OpenSCAD. I need it to be parametric so I can easily adjust it for different card sizes and numbers of cards.

The basic design will be a series of angled slots for cards, with a slanted back. I want to be able to define the card's width and height, the overall height of the organizer, and the wall thickness. I also need to specify a tolerance for the cards to wiggle a bit side to side.

The number and height of the slots should be configurable via a list of stack heights. There should also be a consistent amount of extra space for each stack, I'd like this to be adjustable as well.

I'd also like a fillet on the upper back of the tray.

A useful option would be to have an option to make the bottom open, just in case I want to save some material and don't care about bottom rigidity.

Could you please generate the necessary OpenSCAD file(s)? No special libraries should be required.

[Assistant]
card_tray.scad:
```
// How wide is the card (short side in mm)?
card_width = 54;    // [1:200]
// How tall is the card (long side in mm)?
card_height = 80;   // [1:200]
// How tall do you want the caddy?
box_height = 47;    // [1:200]
// How thick do you want the walls?
wall_thickness = 1; // [0.4:5]
// How much space do you want the cards to wiggle side to side?
tolerance = 2; // [0:10]
// List of card stack heights, adding more increases the number of slots
stack_heights = [5, 5, 5, 2, 5, 5, 5, 8, 8, 8, 8, 8, 8];
// How much extra space for each stack?
stack_space = 3.5; // [0:20]
// Should the bottom be open (less material, but not as strong)?
open_bottom = 0; // [0:No, 1:Yes]

$fn = 90 * 1;
interior_height = box_height - wall_thickness;
box_width = card_height + wall_thickness * 2 + tolerance * 2;
slant = box_height < card_width ? acos(box_height / (card_width + wall_thickness)) : 10;
divider_height = card_width * cos(slant) + wall_thickness;

function add_scalar(v, s) =
    [ for (i = [0: len(v) - 1]) v[i] + s ];
function sumv(v, i, s=0) = (i==s ? v[i] : v[i] + sumv(v, i-1, s));
function cumsum(v)=
    [ for (i = [0 : len(v)]) i==0 ? 0 : sumv(v, i-1) ];

slot_widths = add_scalar(stack_heights, stack_space + wall_thickness);
angled_slot_widths = [for (width = slot_widths) width/cos(slant)];
slot_offsets = cumsum(angled_slot_widths);
cutout_radius = box_width * 0.4;
fillet_width = 5 * 1;
fillet_radius = 5 * 1;
box_depth = slot_offsets[len(slot_offsets) - 1] + card_width * sin(slant) + fillet_radius + 2 * wall_thickness;

module fillet_tool(radius, height, overhang = 1) {
    difference() {
        cube([radius + overhang, radius + overhang, height]);
        translate([0,0,-1]) cylinder(r=radius, h=height+2);
    }
}

difference() {
difference() {
    union() {
        difference() {
            intersection() {
                for (slot_offset = slot_offsets) {
                    translate([0, slot_offset, 0]) rotate([-slant, 0, 0])
                        cube([box_width, wall_thickness, card_width + wall_thickness * 2]);
                };
                cube([box_width, box_depth, box_height]);
            };
            translate([box_width/2, box_depth, divider_height]) rotate([90,0,0]) union() {
                translate([-cutout_radius-fillet_radius+0.5,-fillet_radius,0])
                    fillet_tool(fillet_radius, box_depth);
                translate([cutout_radius+fillet_width-0.5,-fillet_radius,box_depth]) rotate([0,180,0])
                    fillet_tool(fillet_radius, box_depth);
                cylinder(r=cutout_radius, h= box_depth);
            };
        }
        difference() {
            difference() {
                cube([box_width, box_depth, box_height]);
                translate([box_width + 1, fillet_radius, box_height - fillet_radius]) rotate([-90,180,90])
                    fillet_tool(fillet_radius, box_width + 2);
            }
            translate([wall_thickness, -1, wall_thickness]) cube([box_width - wall_thickness * 2, box_depth + 2, box_height]);
            if (open_bottom) {
                translate([20,0,-1]) cube([box_width - 40, box_depth, wall_thickness+1.1]);
            }
        }
    }
    translate([-1, box_depth - fillet_radius, box_height - fillet_radius]) rotate([-90,180,-90])
        fillet_tool(fillet_radius, box_width + 2);
}
}
```


[User]
I'd like to design a parametric belt clip for a GT2 timing belt. I need an OpenSCAD file (or potentially a few files if it makes sense) that lets me customize the inner dimensions of the clip as well as its overall height. I've been using a design, but I'd like it to be generated fresh so that I can fully understand how it's created.

The clip should be a rectangular box with a hole running through it. The hole should have rounded ends, like a pill shape. The wall thickness should be consistent throughout the clip. I think using the `hull()` function with two centered cubes is a good way to get the rounded ends for the hole in the middle of the box.

Specifically, I need the following parameters:
*   `inner_x`: The inner width of the hole in millimeters.
*   `inner_y`: The inner height of the hole in millimeters.
*   `height`: The overall height of the clip in millimeters.
*   `wall`: The thickness of the walls of the clip in millimeters.

I would like the final design to be a single module called `BeltLock` that takes all four of those parameters as arguments. The main body of the module should be a box with outer dimensions calculated using the inner dimensions and the `wall` parameter. It should have the hole removed from the center. The pill-shaped hole should be created using two cubes as mentioned, then `hull()`ed and finally subtracted from the main body.

I'm also not sure if it is best to write custom libraries in OpenSCAD or if I should just stick to the basic operations. What would you recommend?

Could you generate the necessary OpenSCAD code for me?

[Assistant]
beltlock_parametrized.scad:
```
//CUSTOMIZER VARIABLES

//Inner size X in mm
inner_x=2.6;
//Inner size Y in mm
inner_y=6.5;
//Height Z in mm
height=15;

//CUSTOMIZER VARIABLES END

module BeltLock(x_in, y_in, h,  $fn=100) {
    wall = 1.2;
    difference(){
        cube([x_in+wall*2,y_in+wall*2,h]);
        translate([wall, wall,0])cube([x_in,y_in,h]);
        translate([(x_in+wall*2)/2,(y_in+wall*2)/2,h-wall])
            hull(){cube([x_in,y_in,0.01], center=true);
                translate([0,0,wall*2])cube([x_in+wall*2,y_in+wall*2,0.01],center=true);}

        }
}

BeltLock(inner_x, inner_y, height);

/* source
translate([10,0,0])
difference(){
    cube([2.8+2.4,6.5+2.4,15]);
    translate([1.2,1.2,0])cube([2.8,6.5,15]);
    #translate([2.6,8.9/2,15-1.2])
  hull(){cube([2.8,6.5,0.01],center=true);
   translate([0,0,2.4])cube([2.8+2.4,6.5+2.4,0.01],center=true);}
}
*/

```


[User]
Okay, I'm working on a 3D printable part for a belt drive, specifically for the X-axis. I've got two versions of the design so far, "X-Belt_Block.scad" and "X-Belt_Block_V2.scad", and I'm realizing the sizing isn't quite right. The spacing between features is off.

I'd really like to get a single, parametric OpenSCAD file that can generate these two blocks (and hopefully allow me to easily tweak the dimensions to get the spacing exactly right). I'm thinking of calling it "x_belt_block.scad".

Here's a breakdown of the features I need:

*   **Core Block:** Both versions start with a central, rectangular block that's 10mm wide, 20mm deep in the first version and 10 mm deep in the second, and 6mm thick. This is centered at [0,0,3]. The thickness is always 6mm.  I'd like to have a parameter called `core_width`, `core_depth` and `core_height` to control the dimensions of this block.
*   **Cylindrical Extensions:** Both versions have two cylindrical extensions, one at each end, that are 6.3mm or 6mm high. They're centered along the Y axis and have a diameter of 3 mm. In the V1 they are at y = -7.7 and y = 7.7. In the V2 they are at y = -5 and y = 5. I would like a parameter called `cyl_offset_y` that controls the offset from the center, a `cyl_radius` to control the radius and a `cyl_height` to control the height. The cylinders are centered on [0, `cyl_offset_y`, 3].
*   **Rectangular Cutouts:** Both versions have two rectangular cutouts, also centered along the Y axis. These are 6.5mm wide, 3.6mm deep and 6mm or 6.1mm thick. In the both versions they are at y = -3.5 and y=3.5. I need parameters for `cutout_width`, `cutout_depth`, `cutout_height`, and `cutout_offset_y`. These are centered on [0, `cutout_offset_y`, 3].

Importantly, I want to be able to control which version of the part is generated with an integer variable, such as `version=1` for version 1 and `version=2` for version 2.

Could you generate a parametric OpenSCAD file that does this for me? I'm not using any external libraries at the moment.

[Assistant]
X-Belt_Block.scad:
```

difference(){

translate([0,0,3]){

cube([10,20,6],center=true);}

translate([0,-7.7,3]){
cylinder(h=6.3, r=1.5,$fn=150, center=true);}

translate([0,7.7,3]){

cylinder(h=6.3, r=1.5,$fn=150, center=true);}

translate([0,3.5,3]){

cube([6.5,3.6,6],center=true);}

translate([0,-3.5,3]){

cube([6.5,3.6,6],center=true);}
}
```
X-Belt_Block_V2.scad:
```

difference(){
union(){
translate([0,0,3]){

cube([10,10,6],center=true);}

translate([0,5,3]){
cylinder(h=6, r=5,$fn=150, center=true);}

   translate([0,-5,3]){
cylinder(h=6, r=5,$fn=150, center=true);}

}
translate([0,-7.7,3]){
cylinder(h=6.3, r=1.5,$fn=150, center=true);}

translate([0,7.7,3]){

cylinder(h=6.3, r=1.5,$fn=150, center=true);}

translate([0,3.5,3]){

cube([6.5,3.6,6.1],center=true);}

translate([0,-3.5,3]){

cube([6.5,3.6,6.1],center=true);}
}
```


[User]
Hi, I'm looking to design a parametric fan duct for a 5015 blower fan, along with a mounting system. I have some specific needs, and I'd like to be able to customize the design using parameters in OpenSCAD.

Here are the details:

**Fan Duct:**

*   It needs to snap onto a standard 5015 blower fan using a notch on the fan's outlet.
*   The duct outlet should be customizable in terms of length, width, and distance from the elbow.
*   The elbow angle should be adjustable, allowing for straight, 90-degree, or other angles. The inner radius of the elbow should also be a parameter.
*   The thickness of the duct walls should be adjustable.
*   The fan outlet dimensions are roughly 20mm x 15.15mm.
*   The notch for the snap fit needs to be 10.85mm long and 1.9mm wide and offset from the center of the fan 0.91mm. The notch should be a distance of 1mm from the edge of the fan.
*   I also need to ensure there's some clearance around the notch to allow it to flex and snap in place. A clearance of 0.5mm should be added around the notch.
*   There should be a relief cut for the center of the fan that is 25mm down and 25mm from the front of the fan. The radius of this cut should be 22.5mm.
*   I'd like the nozzle tip to taper from the fan outlet dimensions to a customizable tip width and length, with a parameter for the distance between the elbow and the nozzle tip.

**Fan Mount:**

*   The mount should allow for attachment to standard OpenBuilds V-Slot extrusion.
*   It should have two mounting points: one for the V-Slot and one for the fan.
*   The total thickness of the mount should be customizable.
*   The distance between the fan bolt and the base bolt should be customizable.
*   For the V-Slot side, there needs to be a hole for a 5.4mm bolt with a 10mm counterbore to fit the head, and 3mm of thickness to allow for the bolt head to sit inside the mount. The diameter of the base circle should be customizable, as well.
*   For the fan side, I need a hole for a 4.4mm bolt, a nut capture for an M4 nut that should be a hexagon 7mm flat to flat and 2mm deep, and the diameter of the fan side circle should be customizable.

**Libraries:**
I will use the BOSL2 library for convenience.

It would be amazing if the design was fully parametric, so I could change all of these dimensions. Could you generate the necessary OpenSCAD files?

[Assistant]
5015_blower_duct.scad:
```
/* [Fan Duct General] */
// Dimensions of fan duct outlet
tipLength = 30;
tipWidth = 3;
// How far from elbow is the tip?
tipDistance = 30;

// Choose duct angle
elbowAngle = 90;
elbowInnerRadius = 0.01;

// thickess of printed duct
thickness = 1.2;

/* [Fan Duct Advanced] */
// Length and width of the outlet on the fan itself
outerLength = 20;
outerWidth = 15.15;

// Location and dimensions of notch for snap fit.  Don't change unless different fan type
notchLength = 10.85;
notchWidth = 1.9;
// Notch is not centered, this value represents how far from center it is
notchOffset = 0.91;
notchFromEdge = 1;
notchClearance = 0.5;

// Offsets for center of fan for relief cut into fan duct
cy = 25;
cz = 25;
r = 22.5;

// Level of detail
$fn=200;

/* [Mount Settings] */
// Total thickness
mountThickness = 6;
// Distance between fan bolt and base bolt
separation = 25;

// Circle on base side
baseMountDiameter = 20;
// Bolt hole with some clearance
baseBoltDiameter = 5.4;
// Thickness under bolt head
baseBoltHeight = 3;
// Bolt head diameter plus clearance
baseBoltCounterbore = 10;

// Circle on fan side
fanMountDiameter = 11;
// Bolt hole with some clearance
fanBoltDiameter = 4.4;
// Distance between flats
nutDiameter = 7;
// Thickness under nut
nutHeight = 2;

tipAngle = asin((outerWidth - tipWidth) / tipDistance);

fanDuct();
translate([0,-50]) fanMount();

module ductInner() {
  square([outerWidth, outerLength]);
}

module ductOuter() {
  translate([-thickness,-thickness]) square([outerWidth + thickness*2, outerLength + thickness * 2]);
}

module nozzleTipInner() {
  translate([-tipWidth/2,0]) square([tipWidth, tipLength]);
}

module nozzleTipOuter() {
  th = thickness / cos(tipAngle);
  translate([-tipWidth/2-th,-thickness]) square([tipWidth + th*2, tipLength + thickness*2]);
}

module snapFit() {
  difference(){
    translate([-outerWidth/2,0])
      linear_extrude(notchFromEdge+notchClearance/2+notchLength+2)
        difference() {
          ductOuter();
          ductInner();
        }
    translate([-(notchWidth+notchClearance)/2-notchOffset,-notchLength/2,notchFromEdge-notchClearance/2])
      cube([notchWidth+notchClearance,outerLength/2,notchLength+notchClearance]);
    translate([0,cy,cz])
      rotate([0,90,0]) cylinder(r=r, h=outerWidth*2,center=true);
  }
}

module elbow() {
  x = (outerWidth+thickness*2+elbowInnerRadius)*2;
  translate([-elbowInnerRadius-outerWidth/2-thickness,0])
    difference() {
      rotate([-90,0,0])
        rotate_extrude(convexity=10)
          translate([elbowInnerRadius+thickness,0,0]) difference() {
              ductOuter();
              ductInner();
            }
      translate([0,0,x/2]) cube([x,(outerLength+thickness*2)*2,x], center=true);
      rotate([0,elbowAngle-90,0]) translate([-x/2,0,0]) cube([x,(outerLength+thickness*2)*2,x], center=true);
    }
}

module nozzle() {
  translate([-elbowInnerRadius-thickness-outerWidth/2,0])
  rotate([0,elbowAngle,0])
  translate([elbowInnerRadius+thickness,0,0])
  difference() {
    hull() {
      linear_extrude(0.02) ductOuter();
      translate([outerWidth-cos(tipAngle)*(tipWidth)/2,(outerLength-tipLength)/2,-tipDistance])
        rotate([0,-tipAngle,0])
          linear_extrude(0.02) nozzleTipOuter();
    }
    hull() {
      linear_extrude(0.02) ductInner();
      translate([outerWidth-cos(tipAngle)*tipWidth/2,(outerLength-tipLength)/2,-tipDistance])
        rotate([0,-tipAngle,0]) // angle the tip
          translate([0,0,-0.01]) linear_extrude(0.02) nozzleTipInner();
    }
  }
}

module fanDuct() {
  rotate([0,90-elbowAngle,0]) {
    snapFit();
    elbow();
    nozzle();
  }
}

module fanMount() {
  difference() {
    linear_extrude(mountThickness)
    difference() {
      hull() {
        circle(d=baseMountDiameter);
        translate([separation,0]) circle(d=fanMountDiameter);
      }
      circle(d=baseBoltDiameter);
      translate([separation,0]) circle(d=fanBoltDiameter);
    }
    translate([separation,0,-nutHeight]) rotate([0,0,0]) cylinder(d=nutDiameter*2/sqrt(3), h=mountThickness, $fn=6);
    translate([0,0,baseBoltHeight]) cylinder(d=baseBoltCounterbore, h=mountThickness);
  }
}

```


[User]
I'm looking to get some OpenSCAD files designed for an endstop mount for a 3D printer, specifically for a Kossel-type printer that uses 2020 aluminum extrusion. I need it to accommodate a mechanical endstop, and I'd like it to be parametric so I can easily adjust it for different setups.

Here's what I'm thinking:

*   **Main Body:** The mount should have a main body that's essentially a rectangular prism, with a smaller rectangular prism extending out on one side to act as a guide pin. This will interface with the carriage or rail.
*   **Hollow for Contacts:** There needs to be a rectangular hollow on the back of the mount, recessed into the main body, to allow space for the soldered contacts on the back of the endstop PCB.
*   **Mounting Holes:** I need two mounting holes for screws to attach the mount to the extrusion. These need to be configurable in diameter.
*   **Thickness:** The overall thickness of the mount should be a parameter that I can adjust to fit different carriage setups.
*   **Economical Cutout:** I'd like an option to cut away a portion of the main body to reduce the amount of plastic used. This should be a configurable option.

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

*   `thickness`: Overall thickness of the mount.
*   `economical`: Boolean value to enable/disable the material-saving cutout.
*  `mount_hole_diameter`: Diameter of the mounting holes for screws.

I think that covers everything. Could you please generate the necessary OpenSCAD files for this? I don't need any custom libraries or anything like that.

[Assistant]
end_stop_mount_v3.scad:
```
// Author: GrAndAG

/* [Settings] */

// Thickness of holder (mm)
thickness = 6; // [3:0.5:25]

//Economical version (requires less plastic)
economical = 1; // [0:No, 1:Yes]

// Diameters of mount holes (mm)
mount_hole_diameter = 3.5; // [2.7:0.1:4.0]

/* [Hidden] */
// to avoid renderring glitches
eps = 0.05;

module end_stop_holder() {
	$fn=50;

	difference() {
        // main body with tip
		union() {
			cube([30, 16, thickness], center = true);
			translate([-7, -4, thickness/2])
				cube([6, 8, 3.5], center = true);
		}

        // hole for contacts on back side of PCB
		translate([3, -2, -thickness/2 + 1.25 - eps/4])
			cube([15, 6, 2.5+eps/2], center = true);

        //cut some unneeded plastic
        if(economical)
            translate([8+eps/4, 0, 3.5])
                cube([14+eps/2, 16+eps, thickness], center = true);

        // two mount holes
		translate([-7, 5, 0])
			cylinder(h=thickness+eps, d=mount_hole_diameter, center = true);
		translate([12, 5, 0])
			cylinder(h=thickness+eps, d=mount_hole_diameter, center = true);
	}
}

end_stop_holder();

```


[User]
I'd like to get a parametric design for a cat puzzle feeder that I can 3D print. The basic idea is a shallow dish with cylindrical obstacles of varying heights and positions scattered across it.

The main dish should be a cylinder, and I need to be able to control the overall radius of that dish as well as its height (thickness). I also need to control the number of the cylindrical obstacles. These cylinders should also be customizable in terms of their base width (they should be square) and their height. It'd be great if the locations of the obstacle cylinders were randomized, but constrained to be inside of the main dish's radius.

The code I provided in the prompt is a decent starting place (a rough prototype) but it's not fully parametric. I would like the design to be fully parametric. It should be a single file (or multiple files if using an external library). I'm not concerned with whether the top or bottom of the main dish cylinder is a true cylinder vs. a disk, but if possible I'd like for the bottom of the dish to be solid.

Could you please generate an OpenSCAD file that implements all of these features using only standard OpenSCAD features and functions - no external libraries please? Thanks!

[Assistant]
cat-puzzle.scad:
```
radius = 55;
number_of_tower = 10;
tower_size = 10;
max_tower_height = 150;
disk_height = 3;

cylinder(disk_height,   radius, radius,true);
for(i=[0:number_of_tower]) {

    height = rands(0,max_tower_height,1)[0];
    tx = rands(tower_size-radius,radius-tower_size,1)[0];
    maxy = sqrt(pow(radius-tower_size, 2) - pow(tx, 2));
    ty = rands(-maxy,maxy,1)[0];

    translate([tx,ty,height/2]) cube([tower_size,tower_size,height], true);
}
```


[User]
I'd like to have an OpenSCAD design for something I'm calling a "BagBiner". It's a small plastic clip that lets you attach a carabiner to fabric, like on a bag, without needing to punch a hole in the material. It should have a curved, almost oval shape, with a slot running through the middle to accommodate the fabric. The general shape of this clip looks like a rounded rectangle, with a round portion cut out, creating a loop. This will create a space in which to attach the carabiner. Inside the clip, there should also be a long thin rectangular space cut out to fit the fabric.

Here are the specific parameters I'd like to be able to adjust in the design:

*   **`carabiner_thickness`**: The thickness of the metal part of the carabiner that will sit inside the loop.
*   **`fabric_thickness`**: The maximum thickness of the fabric that the clip will be used on.
*   **`carabiner_ID`**: The interior diameter of the end of the carabiner that fits through the loop.
*   **`thickness`**: The overall thickness of the plastic clip itself.
*   **`fn`**: This will control the smoothness of the curves; I know that values of 6 or 7 have good printability without supports.
*   **`hole_diameter`**: The diameter of the circular cutout where the carabiner loop will fit. This should be calculated using the first two parameters, `carabiner_thickness` and `fabric_thickness`. This parameter may not need to be explicitly exposed to the user as it can be calculated using the other input parameters, it should be made modifiable through those parameters.
*   **`slot_width`**: The width of the slot for the fabric, which should be related to `fabric_thickness`. As with the `hole_diameter`, this should probably not be a top-level parameter and instead be defined by the other input parameters.

I'd like the design to use the `hull()` function and be based on intersecting cylinders and cubes to create the shape. I'm not sure if it would be best to do this in a single file or separate out the logic, but ideally the overall dimensions of the clip would be adjusted based on the other input parameters.

Also, can you make it use the BOSL2 library if it makes things easier? I'm generally familiar with it and find it convenient to work with.

[Assistant]
BagBiner3.scad:
```
// Name: BagBiner
// Creator: Cory Chapman (@cmchap)
// License: Creative Commons Attribution
// Date Created: 2015 Nov 04
// About:
// This is a blatant ripoff of Tribe One's PackTach:
// http://www.tribeoneoutdoors.com/packtach/
//
// It's used to attach carabiners to a sheet of cloth
// (e.g. on a bag) without puncturing
// a hole in the fabric.

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

//Thinnest point of the carabiner's material
carabiner_thickness = 3.3;

//Maximum thickness of fabric to be used.
fabric_thickness = 2;

//Interior diameter of the end of the carabiner to be used. (The wider end probably works better.)
carabiner_ID = 22;

//Thickness of the final BagBiner.
thickness = 6;

//Smoothness of the curves. Higher numbers take longer to render. It's printable without supports if this is set to 6 or 7 (depending or print orientation).
fn = 7;

hole_diameter = carabiner_thickness*2+fabric_thickness*4;
slot_width = fabric_thickness*2;

total_height = hole_diameter*1.5+thickness*2;
total_length = total_height;
total_width = total_height;

difference(){
	intersection() {
		union() {
			hull(){
				cylinder(
					h = total_width,
					d = total_length,
					center = true,
					$fn=fn
				);
				translate([0,-1*total_height/2,0]) cube([total_length,total_height,total_width], center=true);
			}
		}
		rotate([0,90,0])
			cylinder(
				h = total_length,
				d = total_height,
				center = true,
				$fn=fn
			);
	}
	color("red")
	union() {
			translate([0,carabiner_ID-thickness/2,0])
				rotate_extrude(convexity = 10, $fn = fn*2)
					translate([carabiner_ID, 0, 0])
						hull(){
							translate([-1*hole_diameter/4,0,0])
								circle(d = hole_diameter, $fn = fn);
							translate([hole_diameter/4,0,0])
								circle(d = hole_diameter, $fn = fn);
						}
		rotate([0,90,0])
			translate([0,total_height/4,0])
					cube(
						[slot_width,total_height/2,total_length],
						center = true
					);
   }
}
```


[User]
I'd like to generate some miniature bases for tabletop games. I've got some ideas about how I want them to look and want to make them customizable.

First, I want three base types. I'll call them "Cool", "Basic", and "Plain". The "Plain" one is the easiest: it's just a simple cylinder with a flat top and bottom. The "Basic" one is also a cylinder, but the top will be slanted. And the "Cool" base will have a two-tiered design. The bottom part will be a cylinder and then a smaller cylinder sits on top of it. Finally, there is a third cylinder on top of that one that forms a chamfered edge. I'd like to be able to control the heights of the base and all of the cylinders.

For each base type, I'd like to control the overall diameter and the number of sides. I want to be able to make it a circle (low or high resolution), pentagon, hexagon, octagon, square, or triangle. I want to be able to stretch the x-axis of all of the shapes (i.e., squash or stretch them from a top view).

For the "Cool" base, I want to control the ratio between the height of the first cylinder and the total height of the base. I want to control the slant of the top of the first cylinder. The second cylinder should have a slant, and also a diameter slightly smaller than the slanted portion of the first cylinder. The third cylinder should be the top most cylinder and also have a slant at the top which should match the second cylinder but should have the original diameter of the base. Finally, I'd like to specify the color of the base using RGB values.

I'd like this to all be in a single .scad file if possible. The user should be able to specify the base type, shape (number of sides), diameter, height, slant, stretch, and, for the "Cool" base, the inner circle ratio. They should also be able to specify the red, green, and blue color values.

Could you write a parametric OpenSCAD file for this design, please?

[Assistant]
MiniatureBase.scad:
```
/* [Base] */

base_type = 1; //	[1:Cool, 2:Basic, 3:Plain]
base_shape = 30; //	[30:Low-res Circle, 100: Hi-res Circle, 5:Pentagon, 6:Hexagon, 8:Octagon, 4:Square, 3:Triangle]

diameter = 20; // [5:100]
height = 3; // [1:35]
slant = 95; // [50:100]

// Percentage:
stretch = 100; // [50:200]

//('Cool' base only)
inner_circle_ratio = 40; // [10:80]

/* [Color] */
red = 136; // [0:255]
green = 118; // [0:255]
blue = 155; // [0:255]

color([red/255, green/255, blue/255])
union(){
    scale([stretch/100, 1, 1]){
        if (base_type == 1){
            // Cool base

            cyl1_height = height * (1-inner_circle_ratio/100);
            cylinder(cyl1_height, diameter, diameter * slant/100, $fn=base_shape);

            cyl2_diameter = diameter  * slant/100 * .95;
            cyl2_height = height - cyl1_height;

            translate([0, 0, cyl1_height]){
                // Cylinder 2
                //color("green")
                cylinder(cyl2_height, cyl2_diameter, cyl2_diameter * slant/100, $fn=base_shape);

                // Cylinder 3

                cylinder(cyl2_height*.5, diameter * slant/100, cyl2_diameter, $fn=base_shape);
            }
        } else if (base_type == 2){
            // Okay Base
            cylinder(height, diameter, diameter * slant/100, $fn=base_shape);
        } else if (base_type == 3){
            // Boring Circle Base

            cylinder(height, diameter, diameter, $fn=base_shape);
        }
    }
}

```


[User]
I'd like to design a box for a breadboard, primarily to protect the underside from short circuits and to allow it to be screwed down. I've got some basic requirements and ideas that I'll outline.

The box should have these key features:

1.  **Parametric Dimensions:** I need to be able to easily change the external width, length, and height of the box. Let's call these `width`, `length`, and `height` respectively.

2.  **Wall Thickness:** The box should have a defined wall thickness which we will call `thickness`. I'd like to be able to specify this.

3.  **Support Posts:** I need four support posts, one in each corner of the box, inside the walls. They should be cylindrical, with a flat base, and raised slightly off of the bottom to accommodate screw heads. They should be joined to the wall of the box and not a separate part. Let's call the diameter of these posts `support_board` and the height `height_support_board`.

4.  **Screw Holes:** Each support post should have a central hole for a screw to go through and attach it to a surface. Let's make this a simple cylinder going through the post, the diameter called `hole_screw`.

5.  **Bottom Text:** I would like to be able to optionally have some text engraved on the underside of the box, maybe a project name. This should also be parametric - the text itself, the font size (`font_size`), and the height of the raised text (`height_text`). Let's call the text variable `text_bottom`.

I don't need any lid at this time. I want to use OpenSCAD to design this, and I'm happy if you generate all necessary code including for any needed submodules. I prefer the box to be centered at the origin. I'm not using any libraries yet, so you should avoid referencing or using any libraries initially.

To help visualize, consider a hollow rectangular box with four corner posts at the same level, each with a vertical screw hole through them. The text would be engraved into the floor of the hollow rectangle, which is itself slightly raised off the z=0 plane.

[Assistant]
caixa3.scad:
```
//external width the box
width=74.6;
//external length the box
length=55;
//external height the box
height=10;
//diameter of support board
support_board=6;
//heigth of support board
height_support_board=6.9;
//hole of screw diameter
hole_screw=2.1;
//text of bottom in the box
text_bottom="Circuit test 1";
//Font size of text
font_size=6;
//height text in the bottom box
height_text=.5;
//thickness for the box
thickness=2.1;
module caixa(){
    difference(){
        union(){
            difference(){
                cube([width,length,height],center=true);
                translate([0,0,thickness]){
                    cube([width-thickness*2,length-thickness*2,height],center=true);
                }
            }
            translate([-width/2+support_board/2+thickness,-length/2+support_board/2+thickness,-height/2+height_support_board/2+thickness]){
                quina(support_board,hole_screw,height);
            }
            translate([-width/2+support_board/2+thickness,+length/2-support_board/2-thickness,-height/2+height_support_board/2+thickness]){
                rotate(-90){
                    quina(support_board,hole_screw,height);
                }
            }
            translate([width/2-support_board/2-thickness,+length/2-support_board/2-thickness,-height/2+height_support_board/2+thickness]){
                rotate(180){
                    quina(support_board,hole_screw,height);
                }
            }
            translate([width/2-support_board/2-thickness,-length/2+support_board/2+thickness,-height/2+height_support_board/2+thickness]){
                rotate(90){
                    quina(support_board,hole_screw,height);
                }
            }
        }
        translate([0,0,-height/2]){
            if ( width<length ) {
                rotate(90){
                    texto(text_bottom);
                }
            }else{
                texto(text_bottom);
            }
        }
    }
}
module quina(support_board,hole_screw,height){
    difference(){
    union(){
    cylinder($fn=20, height_support_board,support_board/2,support_board/2,center=true);
    translate([-support_board/2,-support_board/2,-height_support_board/2]){
        cube([support_board/2,support_board/2,height_support_board],center=false);
    }
}
cylinder($fn=10,height*2,hole_screw/2,hole_screw/2,center=true);
}
}
module texto(text_bottom){
    mirror([1,0,0]){
        linear_extrude(height_text){
            text(text_bottom,size=font_size ,font="Courier New:stlengthle=bold",halign="center",valign="center");
        }
    }
}
caixa();
translate([0,0,-height/2]){
  //  texto(text_bottom);
}

```


[User]
Hey, I'm looking to design a custom stir plate for a computer fan, and I'd like to get a parametric OpenSCAD design that I can tweak. I have some basic dimensions in mind, but I want to be able to change things like the overall size, wall thickness, corner radii, and of course, the fan and magnet mount dimensions.

The main body should be a rectangular box with rounded corners. I'd like to specify the height, width, and depth.  I also need to control the wall thickness, a corner radius, and the thickness of the top and bottom surfaces of the enclosure independently.

For mounting the fan, I'm thinking of a recessed area in the top of the box.  I need to specify the fan width and height and have a corner radius for that recessed area. Inside the recess, I'll need a central cylinder for the fan hub and a circular depression in the base of the fan recess to hold magnets. I’d also like to include support pegs for the fan at the corners of the fan recess and four cylindrical screw holes to mount the fan. The magnet holders should have a central magnet holder with additional space around it to allow for other shapes of magnet. They should also have support structures to help them adhere to the base.

The box will also need screw holes for mounting the lid to the main body.  The screw holes should be countersunk, I guess. It should also have the screw holes be able to go all the way to the top, so that it can be mounted on a flat surface instead of relying on only the lid.

And finally, I’d like a separate lid that fits over the top of the box. It should have some slight clearance so it fits nicely on the box, and the bottom part of it should be slightly raised to fit inside the box.

I'd like to use the BOSL2 library if possible, as it's got a lot of good primitives and makes things easier to manage. Please include all necessary BOSL2 library files.

I'm hoping for something reasonably flexible that I can play around with in OpenSCAD. Let me know if you need any more information, or if there is anything I’ve missed.

[Assistant]
stirplate.scad:
```
$fn=100;

height    = 35;
width     = 120;
depth     = 120;
corner    = 20;
wall      = 4;
top       = 2;
bottom    = 3;
screwhole = 3;
slip      = 0.25;
fanwidth  = 80;
fanheight = 26;
fancorner = 2;
fancore   = 35;
fandip    = 1.5;

intersection(){
    translate([0,depth/2,-50]){
       //cube([200,200,200]);
    }

union(){
translate([width+10,0,-height*2]){lid();}
translate([0,depth/2+fancore,0]){fan(false);}
case();
}
}

module fan(show){

    translate([(width-fanwidth)/2+fancorner,(depth-fanwidth)/2+fancorner,4.5]){

        if(show){
        difference(){
            minkowski(){
                cube([fanwidth-fancorner*2,fanwidth-fancorner*2,fanheight]);
                cylinder(r=fancorner,h=0.01);
            }
            translate([fanwidth/2-fancorner,fanwidth/2-fancorner,-0.01]){
                cylinder(r=fanwidth/2-2,h=fanheight+0.03);
            }
        }
        translate([-fancorner,-fancorner+fanwidth/2-3,fanheight-2]){
                cube([fanwidth,6,2]);
        }
        translate([-fancorner+fanwidth/2-3,-fancorner,fanheight-2]){
                cube([6,fanwidth,2]);
        }
        translate([fanwidth/2-fancorner,fanwidth/2-fancorner,fandip]){
            cylinder(r=fancore/2,h=fanheight-fandip);
        }
    }

    //magnetcaddy
    difference(){
        translate([fanwidth/2-fancorner,fanwidth/2-fancorner,fandip-4]){
            cylinder(r=fancore/2+2,h=8);
        }
        union(){
        translate([fanwidth/2-fancorner,fanwidth/2-fancorner,fandip]){
            cylinder(r=fancore/2+0.2,h=fanheight-fandip);

            for(i=[0:360/7:360]){
                rotate([0,0,i]){
                    translate([fancore/2,0,fandip+1.5]){
                        cube([6,12,6],center=true);
                    }
                }
            }

            translate([4.75,0,-3.6]){
                cylinder(r=4.2,h=4);
           }
            translate([14.25,0,-3.6]){
                cylinder(r=4.2,h=4);
           }

           translate([-4.75,0,-3.6]){
                cylinder(r=4.2,h=4);
           }

           translate([-14.25,0,-3.6]){
                cylinder(r=4.2,h=4);
           }
        }

    }
}

    }
}

module lid(){
    difference(){
        translate([corner+wall/2+slip/2,corner+wall/2+slip/2,height*2]){
            minkowski(){
                cube([width-corner*2-wall-slip,depth-corner*2-wall-slip,bottom]);
                cylinder(r=corner,h=0.01);
            }
        }
        translate([0,0,height*2-0.02]){
            screwneg();
        }
    }
}

module case(){

    difference(){
        translate([corner,corner,0]){
            minkowski(){
                cube([width-corner*2,depth-corner*2,height]);
                cylinder(r=corner,h=0.01);
            }
        }

        translate([corner+wall,corner+wall,top]){
            minkowski(){
                cube([width-corner*2-wall*2,depth-corner*2-wall*2,height]);
                cylinder(r=corner,h=0.01);
            }
        }

        translate([corner+wall/2,corner+wall/2,height-bottom]){
            minkowski(){
                cube([width-corner*2-wall,depth-corner*2-wall,height]);
                cylinder(r=corner,h=0.01);
            }
        }

        //Magnethole
        translate([width/2,depth/2,1]){
            cylinder(r=fancore/2+2+2,h=fanheight-fandip);
        }

    }
    screwpos();

    //fanmount
    difference(){

        union(){
            translate([width/2-fanwidth/2+2,depth/2-fanwidth/2+2,0]){
                cylinder(r=5,h=8);
            }
            translate([width/2+fanwidth/2-2,depth/2-fanwidth/2+2,0]){
                cylinder(r=5,h=8);
            }
            translate([width/2-fanwidth/2+2,depth/2+fanwidth/2-2,0]){
                cylinder(r=5,h=8);
            }
            translate([width/2+fanwidth/2-2,depth/2+fanwidth/2-2,0]){
                cylinder(r=5,h=8);
            }
        }
        fan(true);
    }

}

module screwneg(){
    v = corner*0.293+(screwhole/2+2+wall)/1.4;
    translate([v,v,0]){ screwcone(); }
    translate([width-v,v,0]){ screwcone(); }
    translate([v,depth-v,0]){ screwcone(); }
    translate([width-v,depth-v,0]){ screwcone(); }
    v2=wall+screwhole/2;
    translate([width/2,v2,0]){ screwcone(); }
    translate([width/2,depth-v2,0]){ screwcone(); }
    translate([v2,depth/2,0]){ screwcone(); }
    translate([width-v2,depth/2,0]){ screwcone(); }
}

module screwpos(){
    v = corner*0.293+(screwhole/2+2+wall)/1.4;
    translate([v,v,0]){ screwcylinder(); }
    translate([width-v,v,0]){ screwcylinder(); }
    translate([v,depth-v,0]){ screwcylinder(); }
    translate([width-v,depth-v,0]){ screwcylinder(); }
    v2=wall+screwhole/2;
    translate([width/2,v2,0]){ screwcylinder(); }
    translate([width/2,depth-v2,0]){ screwcylinder(); }
    translate([v2,depth/2,0]){ screwcylinder(); }
    translate([width-v2,depth/2,0]){ screwcylinder(); }
}

module screwcone(){
    cylinder(r1=screwhole/2, r2=screwhole/2+2,  h=bottom+0.1);
}

module screwcylinder(){
     difference(){
        cylinder(r=screwhole/2+2,h=height-bottom);
        translate([0,0,top]){
            cylinder(r=screwhole/2,h=height-top);
        }
     }
}

```


[User]
I need a parametric OpenSCAD design for a hole cover, specifically one that fits into a profile. I have an example of what I'm trying to achieve, but it's not quite right, so I need it created from scratch.

Here's what I need:

The hole cover should consist of two main parts: a cylindrical plug that fits into a hole and a flat, circular cover that sits on top of the surface around the hole.

**The Plug:**
*   The plug needs to be a cylinder designed to fit into a hole of a specified diameter.
*   The plug should have a wall thickness so that it can be press-fit.
*   The plug should have a specified depth

**The Cover:**
*   The cover should be a flat cylinder with a larger diameter than the plug, meant to rest on the surface around the hole.
*  The cover should have a specified height

**Parameters:**
I'll need to be able to specify the following as parameters:
*   `hole_diameter`: The diameter of the hole the plug will fit into.
*   `plug_depth`: The depth of the plug.
*   `plug_wall_thickness`: The wall thickness of the plug.
*   `cover_diameter`: The diameter of the flat circular cover.
*   `cover_height`: The height of the flat circular cover.
*   `profile_wall_thickness` : the thickness of the wall that surrounds the plug

I'd like this to be implemented in a single .scad file, and I'd prefer not to use any libraries for now. Let me know if you have any questions!

[Assistant]
holecover.scad:
```
//hole cover

$fn=80;

//hole diameter
hole_diameter = 10;

//profile depth
depth = 5;

//tube wall
wall =1.5;

//profile_wall
material_wall=2;

//cover diameter
cover_diameter =15;

//cover height
cover_height = 1;

difference(){
    cylinder(d=hole_diameter,h=depth );
    cylinder(d=hole_diameter-wall,h=depth+1 );
    }

translate([0,0,-cover_height]){
    cylinder(d=cover_diameter,h=cover_height  );
}

rotate_extrude(convexity = 20)
    translate([hole_diameter/2-0.1, material_wall, 0])
circle(r = 0.2, $fn = 20);
```


[User]
I'm working on a project to make a dial indicator mount for my 3D printer to help with bed leveling. I've already got some basic designs, but I'd like something more flexible and parametric so I can easily adjust it for different indicators and printer setups.

I need two main parts: a bushing that sits in the hotend mounting plate and a clamp that holds the dial indicator to the bushing. The bushing should have a cylindrical base to fit snugly into the mounting plate, and a smaller bore where the indicator's shank goes. The clamp should secure the indicator shank to the bushing from below.

Here are the basic requirements I'm thinking of:

**Bushing:**

*   **Base Cylinder:** This part fits into the printer's hotend mount. I need parameters for the *outer diameter*, the *inner diameter* and the *height* of this cylinder.
*   **Indicator Bore:** This is where the indicator's shank goes. I need parameters for *bore diameter* and *bore height*. The bore should be centered on the base cylinder and have a transition.
*   **Overall Bushing height:** parameter

**Clamp:**

*   **Main Body:** I'm thinking a cylinder with a through-hole that mates with the bushing. I need parameters for *outer diameter*, *inner diameter*, and *height*. The inner diameter should match the outer diameter of the bushing's indicator bore.
*   **Side Clamp:** The clamp will have a side portion with a screw to squeeze the indicator shank. I would like a *clamp width*, *clamp thickness*, and *clamp length* for this piece.
*   **Screw Hole:** There needs to be a hole in the side clamp. We need parameters for *screw hole diameter*, *screw head diameter*, *screw head thickness*, *screw hole depth*. The screw hole should be modeled to accept an M3 screw.
*   **Overall Clamp Height:** parameter

I'd also like the option to adjust the overall height and offset of the clamp from the bushing.

It would be ideal if you could generate an OpenSCAD file or files with these parameters defined so that they can be easily adjusted. I think we can accomplish this in one or two files - perhaps one file for each part or maybe one file with the two as separate modules. No need to reinvent the wheel, if you can suggest relevant libraries, that would be great.

[Assistant]
Dial_Indicator_bushing.scad:
```
difference() {

union() {

translate(v = [0, 0, 2]) {

cylinder(4,10,10,$fn = 150, center= true);}

translate(v = [0, 0, 6.5]) {

    cylinder(5,7.795,7.759,$fn = 150, center= true);}
}

translate(v = [0, 0,4.5]) {
    cylinder (h = 14, r=5, center = true, $fn=150);
}

translate(v = [0, 12, 5]) {

    cube([20,8,12],center= true);
}

}

```
Dig_Indicator_Busging.scad:
```
difference() {

union() {

translate(v = [0, 0, 2]) {

cylinder(4,10,10,$fn = 150, center= true);}

translate(v = [0, 0, 6.5]) {

cylinder(5,7.795,7.759,$fn = 150, center= true);}
}

translate(v = [0, 0,4.5]) {

cylinder (h = 14, r=5, center = true, $fn=150);

}

}

```
Indicator_Clamp.scad:
```

translate(v = [0, 0, 6]){

difference(){

 cylinder (h = 12, r=10
   , center = true, $fn=150);

 cylinder (h = 14, r=5, center = true, $fn=150);

translate(v = [0,4.25, 0]) {

    cube([2,14,14],center= true);}
}
}

difference(){

translate(v = [0, 12, 6]) {

cube([8,10,12],center= true);
}

 translate(v = [0,11.5, 6]) {

    cube([2,12,15],center= true);
}

translate(v = [-3,13,6]) {
   rotate ([0,90,0]){

     cylinder (2.2, 3.5,3.5, center = true, $fn=6);
     }
 }

 translate(v = [0,13,6]){

    rotate ([0,90,0]){

   cylinder ( 8.1, 1.55,1.55, center=true, $fn=150);

  } }
}

```


[User]
I need a customizable wheel design, something that prints quickly and uses as little material as possible while still being stable and durable. I have a design in mind, and it’s similar to a spoked wheel, but I'm not sure how to write the code.

Here’s what I’m looking for:

*   **Spokes:** The wheel should have a variable number of spokes. I’d like to be able to specify this with a `raggi` parameter, where I can choose any integer from 3 up to maybe 30.
*   **Diameter:** I need to control the overall diameter of the wheel using a `wheel_diameter` parameter, with a range from 20mm to 120mm, with a resolution of 0.1mm.
*   **O-ring Groove:** The wheel should have an optional groove for an O-ring. This needs to be controlled by an `oring` parameter that takes either 0 (no O-ring) or 1 (O-ring groove). If the O-ring is enabled, I'd like the groove to be located on the outer edge of the wheel.
*   **Hub:** There needs to be a central hub in the wheel. This should be a simple cylinder, with a diameter of 12mm.
*   **Shaft Hole:** The wheel will need a hole for a shaft in the center. This hole should have a flat side for a setscrew.  I need a `fudge_factor` parameter that allows me to make the shaft hole slightly larger, if needed.
*   **Setscrew Hole:** A tapped hole for an M3 setscrew will be needed in the center hub, perpendicular to the shaft hole. This would need to be parametrically controlled to allow the proper setscrew to be used.
*   **Detail:** I would like to set the resolution of the curves using a variable called `fn`. I want the default value to be 100 and want the range to be 50 to 500.
*   **Construction**:
    *   The main body of the wheel should be a cylinder with some height.
    *   The main body needs a slightly smaller cylinder cut out of it to make the rim.
    *   The spokes should be created by cutting away rectangular pieces of the main body of the wheel
    *   There should be an "inner profile" cut into the wheel using a rotate_extrude.
    *   The shaft cutout, setscrew hole, and rim groove should also be cut from the body.

I'd like the code to be organized and easy to understand. Please use comments where necessary. Can you provide the OpenSCAD code for this?

[Assistant]
wheelNew.scad:
```
//http://customizer.makerbot.com/docs

/* [Nr.Spokes] */
raggi=5;			//[3:30]
/* [Wheel Diameter] */
wheel_diameter=60;	//[20:0.1:120]
/* [O-ring] */
oring=0;			//[0,1]
/* [Fudge factor] */
fudge_factor = 0;	//[0:10]
/* [Definition] */
fn=100; 			//[50:500]
difference(){
	union()	{
		//rim
        difference () {
            cylinder (r=wheel_diameter / 2, h=4, $fn=fn);
            translate([0,0,-0.1]) cylinder (r=(wheel_diameter / 2)-1.8, h=4.2, $fn=fn);
        }
        // add spokes (circular cut-outs) raggi
        for(i = [0:raggi]) rotate([0, 0, i * 360 / raggi+1]) translate([-0.9, 0, 0]) cube([1.8, (wheel_diameter/2)-0.9, 4]);
		//boss
		cylinder(r=12 / 2, h=10, $fn=fn);
        //profilo interno
        translate([0, 0, 0]) rotate_extrude(convexity=10, $fn=fn) translate([(wheel_diameter / 2)-1.8,2, 0]) rotate([0,0,45]) square([4/sqrt(2),4/sqrt(2)],center=true);
	}
	union()	{
		//shaft cutout (shaft with flat)
		translate([0, 0, 0.6]) intersection(){
			cylinder(r=5.5 / 2 + fudge_factor, h=12, $fn=fn*2/5); // was 5
			translate([0, 0, 4]) cube([3.0 + fudge_factor, 12, 12], center=true); // was 2.5
		}
		// set screw for M3
		translate([0, 0, 7]) rotate([90, 0, 90]) cylinder(r=1.5, h=60, center=true, $fn=fn*2/5); // was 1
		//rim groove cutout
		translate([0, 0, 2]) rotate_extrude(convexity=10, $fn=fn) translate([wheel_diameter / 2, 0, 10]) rotate([0,0,45]) square([2,2],center=true);
	}
}
if ( oring==1) { color([0.08,0.08,0.08,1]) translate([0, 0, 2]) rotate_extrude(convexity=10, $fn=fn) translate([wheel_diameter / 2, 0, 10]) rotate([0,0,45]) circle(3/2);}
//if ( oring==0){};
```


[User]
Okay, I'd like to create a parametric test tube holder, similar to the one I found on Thingiverse (thing:1116547). I want it to have a few adjustable features.

First, the holder should accommodate a grid of test tubes, and I need to control the number of tubes along both the X and Y axes. I'll need parameters for `TubesX` and `TubesY`.

Next, the test tubes themselves will have a certain height and diameter, so I need parameters for `TubeHeight` and `TubeDiameter`. The holes in the holder will be slightly larger than the tubes, so I'll need a separate parameter for the `HoleDiameter`.

The holder will consist of two horizontal "tables" with some vertical walls to give the structure some stability and also connect the tables to one another. I'll need a parameter `HolderHeight` to define the height of the upper table from the lower one (or, if you think of it from a top-down point of view, it will be the height of the vertical walls). I will also need a `SecondTableHeight` for the lower table height.  Also, let's add a `HolderThickness` parameter for the thickness of these tables and the walls themselves. I also need a parameter to control the space between the tubes, let's call that `InterTubeSpace`.

I'd like to have an option to offset the tube positions on even rows, so a parameter `AlternateEvenRows` which can be either "Yes" or "No" would be great. I'd also like to have a parameter `DrawSampleTubes` so I can optionally draw the tubes so that the model represents the actual tubes that will be inserted, this should also be "Yes" or "No". And, finally, another parameter `MakeHalfHoleBottom` which will specify whether or not to create a half circle cutout on the bottom table, so it's easier to remove the test tubes, so "Yes" or "No" as well. Also, a parameter to specify whether or not to add a hatch pattern to the walls called `DrawHatchOnWalls`, "Yes" or "No". Finally, I need to be able to choose whether to make squared holes or circular holes using the parameter `MakeSquaredHoles`, which would also be a "Yes" or "No" parameter.

I think that covers all of the main features. Please generate the necessary OpenSCAD file. I'm not particularly worried about library dependencies, use whatever you think is most appropriate.

[Assistant]
TestTubeHolder.scad:
```
// Number of Tubes at X axis
TubesX = 3;
// Number of Tubes at Y axis
TubesY = 4;
// Tube Height
TubeHeight = 150;
// Tube diameter
TubeDiameter = 16;
// Hole diameter
HoleDiameter = 18;
// Top table height
HolderHeight = 100;
// Walls thickness
HolderThickness = 2; // [2:50]
// Zero to remove
SecondTableHeight = 50;
// Inter tube space
InterTubeSpace = 4; // [2:50]
// Alternate even rows positions ?
AlternateEvenRows = "Yes"; // [Yes,No]
// Draw Sample Tubes?
DrawSampleTubes = "No";  // [Yes,No]
// Make half hole at bottom table?
MakeHalfHoleBottom = "Yes"; // [Yes,No]
DrawHatchOnWalls = "Yes"; // [Yes,No]
MakeSquaredHoles = "Yes"; // [Yes,No]

/* [HIDDEN] */
$fn=50;
bAlternateEvenRows = "Yes" == AlternateEvenRows; // Alternate even rows positions
bDrawSampleTubes = "Yes" == DrawSampleTubes;  // Draw Sample Tubes?
bMakeHalfHoleBottom ="Yes" == MakeHalfHoleBottom; // Make half hole at bottmo table?

modelX = (TubesX+0.5)*(HoleDiameter+InterTubeSpace);
modelY = (TubesY+0.5)*(HoleDiameter+InterTubeSpace);

holderThickness = HolderThickness < 2 ? 2: HolderThickness;

//wall();
All();

module All(){
    difference()
    {
        union(){
            translate([0,0,HolderHeight]) table();
            translate([0,0,SecondTableHeight]) table();
            table();
        }
        z = bMakeHalfHoleBottom ? (holderThickness/2) : 0;
        translate([0,0,0.01 + holderThickness-z]) // Better Drawing
            DrawTubes();
    }
    wall();
    translate([0,
              modelY-holderThickness,
              0])
        wall();
    if(bDrawSampleTubes)
        DrawTubes(TubeDiameter);
}
module wall(){
    if("Yes" == DrawHatchOnWalls){
        difference(){
            cube([modelX,
                  holderThickness,
                  HolderHeight]);
            intersection(){
                wallPatternRestriction();
                patternDiagonal();
            }
        }
    }else{
        cube([modelX,
              holderThickness,
              HolderHeight]);
    }
}
module wallPatternRestriction(){
    translate([holderThickness,-holderThickness*0.5,holderThickness])
        cube([modelX-2*holderThickness,
              holderThickness*2,
              HolderHeight-2*holderThickness]);
}
module patternDiagonal(){
    for(i = [0:holderThickness*3:HolderHeight]){
        translate([0,-1,modelX/2+i]) rotate([0,45,0])
            cube([modelX*2,holderThickness*2,holderThickness]);
    }
}
module table(){
    cube([modelX,
          modelY,
          holderThickness]);
}
module DrawTubes(Diameter = HoleDiameter){
    color("lightblue")
    for(x = [1:TubesX])
    {
        alternate = (x%2 == 0 && bAlternateEvenRows);
        for(y = [1: alternate ? TubesY-1:TubesY])
        {
            offsetY = alternate ? (InterTubeSpace+HoleDiameter/2) : 0;

            if("Yes" == MakeSquaredHoles){
                translate([x*(HoleDiameter+InterTubeSpace)-HoleDiameter*0.75,
                       offsetY+y*(HoleDiameter+InterTubeSpace)-HoleDiameter*0.75,0])
                cube([Diameter,Diameter,TubeHeight]);
            }else{
                translate([x*(HoleDiameter+InterTubeSpace)-HoleDiameter/4,
                       offsetY+y*(HoleDiameter+InterTubeSpace)-HoleDiameter/4,0])
                cylinder(r = Diameter/2,h=TubeHeight);
            }
        }
    }
}
```


[User]
I need an OpenSCAD design for a box that will hold screws for cutting. The box should have a cutting guide and holes for holding nuts. It's for cutting 3mm diameter screws.

Specifically, I'd like to control these parameters:

*   `largoTornilloInicial`: The initial length of the screws before cutting, say 20mm.
*   `sobrante`: The amount of screw length to cut off, say 2mm.
*   `numTornillos`: The number of screws per side of the box (so double that total), say 5.
*   `diametro_tornillo`: The diameter of the screw, 3mm.
*   `cabeza_tornillo`: The diameter of the screw head, 6.2mm.
*   `grosorPared`: The thickness of the box walls, 3mm.
*   `grosorSoporte`: The thickness of the cutting guide, 4.4mm.
*  `alto_caja`: The height of the box, 15mm.

The box should have a rectangular shape. It needs a base with a cutting guide that will position the screws correctly for cutting. The cutting guide should have support to hold the screws while they are being cut. There should be holes to hold standard nuts to help with cutting. The number of nut holes is dependent on the number of screws.

The design should be fully parametric, allowing these parameters to be easily changed. Please include comments in the code to explain what is happening. And also make sure to use good variable names in the code!
I'd prefer to avoid any library dependencies if that is possible.

[Assistant]
cajaCortaTornillos.scad:
```
//translate([-16.5+disth/2,24+pos,10])cylinder(r=3.3, h=20, $fn=6);

largoTornilloInicial=20;
sobrante=2;
numTornillos = 5;

largo_caja=30;
alto_caja=15;
diametro_tornillo=3;
cabeza_tornillo=6.2;
grosorPared=3;

grosorSoporte=4.4;

largoTornillo=largoTornilloInicial-sobrante;

anchoCaja=cabeza_tornillo*((numTornillos*2)+2);

module caja(){
cube([anchoCaja, largoTornillo*2, alto_caja]);
}
module huecoCaja(){
	translate([-2, grosorPared, 4])
	cube([anchoCaja+4, (largoTornillo*2)- grosorPared*2, alto_caja]);
}

module soporte(){
	difference(){
		translate([0, largoTornillo-(grosorSoporte+sobrante), 4])
			cube([anchoCaja ,(sobrante*2) + (grosorSoporte*2),alto_caja-4]);
			tuercas();
		translate([-1, largoTornillo-(sobrante), 4])
			cube([anchoCaja+2 ,(sobrante*2) ,alto_caja-7]);
		translate([-1, largoTornillo-0.5, 8])
			cube([anchoCaja+2 ,1 ,alto_caja-7]);
	}
translate([0, largoTornillo-(sobrante), 0])
			cube([anchoCaja,(sobrante*2) ,alto_caja-8.5]);
}

module tuercas(){

for( i = [1:2:numTornillos*2] ){
	translate([i* cabeza_tornillo, largoTornillo+1+(grosorSoporte+sobrante), 8.3])
	rotate([90,0,0]) cylinder(r=3.3, h=3.4, $fn=6);
}

for( i = [1:numTornillos] ){
	translate([(i*2)*cabeza_tornillo, grosorPared - 1 + largoTornillo-(grosorSoporte+sobrante), 8.3])
	rotate([90,0,0]) cylinder(r=3.3, h=3.4, $fn=6);
}

}

module tornillo(){
translate([0, 0, 0])
for( i = [1:numTornillos] ){
	translate([(i*2)*cabeza_tornillo, largoTornilloInicial, 8.3])
	rotate([90,0,0]) cylinder(r=1.5, h=largoTornilloInicial+3, $fn=16);
}
translate([0, 0, 0])
for( i = [1:2:numTornillos*2] ){
	translate([i* cabeza_tornillo, (largoTornilloInicial*2)-1, 8.3])
	rotate([90,0,0]) cylinder(r=1.5, h=largoTornilloInicial+3, $fn=16);
}
}

module final(){
	difference() {
		caja();
		huecoCaja();
		tornillo();
tornillo();
	}

soporte();

}
final();

```


[User]
I'm looking to create a parametric test tube holder, similar in concept to the "HorizontalTestTubeHolder.scad" file I've been working with, but I need it to be vertical instead of horizontal, and with a few extra features and customization options.

Here's what I'm envisioning:

**Core Structure:**

*   **Vertical Orientation:**  The tubes should stand vertically, rather than lying horizontally.
*   **Base:** A stable base is needed to support the tubes.  I'd like to be able to control the base dimensions. Ideally, I'd like it to be a rectangular base but also have the option of making the base circular.
*   **Tube Holes:**  The base should have holes to hold the tubes. I'll need control over the number of holes and the diameter of those holes.
*   **Tube Spacing:**  The spacing between the tubes needs to be adjustable.
*   **Wall Thickness:**  I'll need control over the thickness of the base.
*   **Text on base:** I want to be able to add text to the side of the base.

**Parameters:**

I'd like the following parameters to be adjustable in the OpenSCAD file:

*   `NumTubes`: The number of tubes the holder should accommodate.
*   `TubeDiameter`: The outer diameter of the test tubes (this will determine the hole size).
*   `HoleDiameter`: The diameter of the holes in the base. (Ideally a little bit larger than `TubeDiameter`)
*   `InterTubeSpace`:  The spacing between the centers of the tube holes.
*   `BaseWidth`: The width of the rectangular base or diameter of the circular base.
*   `BaseDepth`: The depth of the rectangular base. (N/A for circular base)
*   `BaseHeight`:  The height/thickness of the base.
*  `BaseShape`: String either "rectangular" or "circular". Default to "rectangular"
*   `TextString`: The text to be printed on the side.
*  `TextRelief`: Boolean 0 or 1. 0 for raised text, 1 for lowered text.
*  `TextOffsetX`: Offset of the text on X axis.
*   `TextOffsetZ`: Offset of the text on Z axis.

**Text on Base:**

*   I need to be able to add text to the side of the base.
*  I need the option to have the text either raised or lowered from the side of the base.

**Example Usage:**

For example, I would like to use it like this:
```
NumTubes = 7;
TubeDiameter = 16;
HoleDiameter = 17;
InterTubeSpace = 1;
BaseWidth = 100;
BaseDepth = 50;
BaseHeight = 10;
BaseShape = "rectangular"; // Or "circular"
TextString = "RafaelEstevam.Net";
TextRelief = 0; // 0 for raised text, 1 for lowered text.
TextOffsetX = 5;
TextOffsetZ = 2;
```

Could you please create an OpenSCAD file (or files if that makes sense) for this? I'm not using any specific libraries so I don't need to worry about specifying any.

[Assistant]
HorizontalTestTubeHolder.scad:
```
Tubes = 7;
// Tube Height
TubeHeight = 100;
// Tube diameter
TubeDiameter = 16;
// Hole diameter
HoleDiameter = 17;
// Inter tube space
InterTubeSpace = 1;
// Walls thickness
HolderThickness = 5;
Angle = 20;
AlternateZ = 1; // [0:No,1:Yes]
Text = "RafaelEstevam.Net";
TextRelief = 0; // [0:Hight,1:Low]
TextOffsetX=5;
TextOffsetZ=0;

difference(){
    base();
    drawTubes(HoleDiameter);
    if(TextRelief == 1) drawText();
}
if(TextRelief == 0) color("lightblue") drawText();

module drawText(){
    posY = TubeHeight*0.75;
    h = posY*tan(Angle);
    w = Tubes*(1+HoleDiameter+InterTubeSpace);
    translate([w-TextOffsetX-HoleDiameter*0.75,posY-HolderThickness/2,h*0.4-TextOffsetZ])
        rotate([90,0,180])
            linear_extrude(height=HolderThickness*0.75) text(Text);
}
module base(Diameter=HoleDiameter){
    w = TubeHeight*0.75;
    h = w*tan(Angle);
    cX=Tubes*(1+Diameter+InterTubeSpace);
    translate([-(Diameter/1.5+InterTubeSpace),0,0]){
        cube([cX,w,HolderThickness]);
        cube([cX,Diameter,Diameter]);
        translate([0,w-HolderThickness,0])
            cube([cX,HolderThickness,h+Diameter*0.5]);
    }
}
module drawTubes(Diameter){
    translate([0,0,HolderThickness+Diameter/2])
        for(i = [0:Tubes-1])
            translate([i*(Diameter+InterTubeSpace),
                       5,AlternateZ == 1 && i%2==1?Diameter*0.25:0])
                rotate([90-Angle,0,180])
                    cylinder(r=Diameter/2,TubeHeight);

}
```