[User]
I'm looking to create a connector piece that joins IKEA LILLABO train tracks to BRIO wooden train tracks. I already have an OpenSCAD file that does this but I'd like a version that is more customizable and includes a few extra features.

Essentially, the connector needs a fixed female end that fits the IKEA track with small nodules to help secure it, a male end that fits BRIO tracks, and a rectangular connecting piece between them. The current design has a fixed length which is a bit too short, causing the track to fit very tightly, and I want to be able to adjust this.

Specifically, I want to be able to control:

*   The overall length of the connector.
*   The diameter of both the fixed (female) and male ends.
*   The height of the connector piece.
*   The thickness of the rectangular part.
*   The size, position, and number of the nodules on the female end that grab the IKEA track. I'd like to be able to adjust their radius, how far they stick out, their angular spacing, and the total number of them.
*   The resolution of the curves should also be adjustable.
*   I would prefer the design be created such that it is trivial to adjust the tolerances between the connector and tracks. That is, if I want to produce a design for more loose connections that should be doable via parameters.

Could you generate the necessary OpenSCAD files for me that accomplish this? I would prefer the design to be parametric, so I can adjust any of these settings in OpenSCAD's customizer. I do *not* have any preferences for the specific names of these parameters.

[Assistant]
IKEA2BRIO.scad:
```
// IKEA to BRIO track connector

// Height of the piece. Multiplied by one so that it doesn't appear in Customizer
height = 11*1;

// Radius of the fixed end of the connector (with nods). Multiplied by one so that it doesn't appear in Customizer
fixedrad = 6*1;

// Radius of the male end of the connector. Multiplied by one so that it doesn't appear in Customizer
malerad = 5.5*1;

// Length of the connector
stud_length = 22;

// Thickness of the stud. Multiplied by one so that it doesn't appear in Customizer
studthickness = 6*1;

// Radius of the fixing nods. Multiplied by one so that it doesn't appear in Customizer
nodrad = 1*1;

// How far the fixing nods are recessed within the fixed end of the connector. The greater the value, the less they will protude.
nod_recess = 0.2;

// How the nods are distributed. Multiplied by one so that it doesn't appear in Customizer
nodangle = 40*1;

// The resolution of the curved surfaces. Multiplied by one so that it doesn't appear in Customizer
curveresolution = 50*1;

cylinder(h=height,r=fixedrad,$fn=curveresolution);
translate([stud_length,0,0]) cylinder(h=height,r=malerad,$fn=curveresolution);
translate([0,-studthickness/2,0]) cube(size=[stud_length,studthickness,height]);

// Draw the nods to grip the fixed size

nodposrad = fixedrad-nod_recess;

translate([nodposrad*sin(nodangle),nodposrad*cos(nodangle),0])
cylinder(h=height,r=nodrad,$fn=curveresolution);

translate([nodposrad*sin(180-nodangle),nodposrad*cos(180-nodangle),0])
cylinder(h=height,r=nodrad,$fn=curveresolution);

translate([nodposrad*sin(nodangle+180),nodposrad*cos(nodangle+180),0])
cylinder(h=height,r=nodrad,$fn=curveresolution);

translate([nodposrad*sin(-nodangle),nodposrad*cos(-nodangle),0])
cylinder(h=height,r=nodrad,$fn=curveresolution);
```


[User]
Hi! I'm looking to design a parametric pipette, and I came across this design online (pipette_v16.scad). It's a pretty good starting point but I'd like something that's generated from scratch and uses a more modular approach, with customizable parameters for the overall dimensions and some specific features.

Here's what I'm envisioning:

**Overall Structure:**

The pipette should have three main body parts (let's call them A, B, and C) that fit together. Part A is the top section, part B is the main body, and part C forms the bottom, where the pipette tip attaches. There's also a top plunger (D), a regulator (E) which adjusts the plunger's travel and volume, a secondary expunger plunger (F), and an expunger bottom part (G).

**Key Parameters (These need to be customizable):**

*   **Printer Tolerance:** A global tolerance value (e.g., 0.1-0.5mm) to account for printer accuracy.
*   **Range Z:** The height of the regulator (part E)
*   **Range Steps:** The number of steps on the regulator (part E)
*   **Range Membrane Pin:** Radius for the membrane pin
*   **Shaft Radius:** Radius of the tube or whatever will mount the pipette tip
*   **Biro Radius**: Radius of the plunger stalk and hole.
*   **Biro Tip Radius**: Radius of the tip of the plunger and hole.
*   **Screw Radius:** Radius of screw holes
*   **Show Cross Section:** A boolean switch to display a cross-section for debugging
*   **Expunger:** A boolean to toggle inclusion of the expunger mechanism.

**Part A (Top):**

*   Overall dimensions (height, width, depth) should be parameters.
*   Needs a top hole for the plunger (D) and a bottom hole for the plunger stalk.
*   A screw hole on the side to hold the plunger (E) in place.
*   The shape should have some smooth, curved transitions.
*   If the expunger is enabled there should be space for it.
    *   There should be a thin hole for the expunger plunger (F)
    *   There should be a thick hole for the expunger plunger (F)
*   Should connect to B with a cylindrical connector.

**Part B (Main Body):**

*   Overall dimensions (height, width, depth) should be parameters.
*   A hole through the main body for the plunger stalk.
*   A counterbored hole at the top to hold part C in place with a small amount of travel.
*   A hole at the bottom to attach the pipette tip.
    *   The hole should match the shaft radius.
*   If the expunger is enabled, there should be space for it.
    *   There should be a thin hole for the expunger plunger (F)
    *   There should be a thick hole for the expunger plunger (F)
*   Should connect to A with a cylindrical connector

**Part C (Bottom):**

*   Should be small and simple.
*   Should connect to B via a hole and small amount of travel.
*   Needs a hole for the plunger stalk.

**Part D (Top Plunger):**

*   A cylindrical shape with a spherical top for comfortable pressing.
*   A hole to fit over the plunger stalk.

**Part E (Regulator Plunger):**

*   A cylindrical shape with a series of steps or grooves.
*   Steps adjust travel distance of the plunger.
*   Needs a hole through the center for the plunger stalk.

**Part F (Expunger Plunger):**

*   Cylindrical part with a spherical top.
*   Needs a hole for the plunger stalk
*   Only present if Expunger is enabled.

**Part G (Expunger Bottom):**

*   A base that connects to the expunger plunger, part F.
*   A hole that fits on the shaft
*   Only present if Expunger is enabled.

**Libraries:**

I'd prefer it if the design was parametric and used libraries where appropriate. Could you use the MCAD library? I think that should help with the screw holes and general component connections.

**Output:**

I'm looking for a set of OpenSCAD files that define each component (A, B, C, D, E, F, G) and then assemble them into a complete pipette design. The files should be well-organized and commented.

It is important that these components do not touch each other unless specified by the connecting sections and the tolerance should be implemented globally where applicable to the clearance between parts.

Let me know if you have any questions or need more details. I'm looking forward to seeing what you come up with! Thanks!

[Assistant]
pipette_v16.scad:
```
/////////////////////////////////////////////////////////////////////////////////
/// ///
/// PIPETTE v15; 2014 02 22 ///
/// by Tom Baden (thingyverse ID: tbaden) ///
/// thomas.baden@uni-tuebingen.de ///
/// tombaden.wordpress.com ///
/// ///
/// *inspired by http://www.thingiverse.com/thing:64977 by kwalus ///
/// ///
/////////////////////////////////////////////////////////////////////////////////

// CUSTOMIZABLE VARIABLES

//
Show_crossection = 0; // [0,1]
// include?
Expunger = 1; // [0,1]

// (printer precision)
Tolerance = 0.35; // [0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5]

// height of regulator (staircase)
Range_Z = 10; // [3:15]
// number of steps
Range_steps = 10; // [1:20]
// (low r = high precision/low range)
Range_membrane_pin = 4;// [2.5, 3, 3.5, 4, 4.5]

// radius of whatever you found to mount the pipette tip! e.g. a plastic or metal tube (see instructions)
shaft_radius = 2.5;

biro_radius = 1.8;
biro_radius_tip = 1.7;
// (thread)
screw_radius = 2.5;

///////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////
/// CUSTOMIZER CUTOFF: MODIFY ANYTHING BELOW HERE AT YOUR OWN RISK! ///////////////////
/// ( Yes, I know the code is messy - it grew organically and I havent cleaned it..) //
module customizer_cutoff(){};//////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////

// Notes just for me:
// yellowtip canulla radius: 2.5 mm
// bluetip PVC tube radius: 3.1 mm

slide = Tolerance;
sep = 20;
wall = 3;
connect_Z = 5;
connect_R = 7;
connect_X = 2;
crosssection = Show_crossection * 100;

////////////////////////////
//// TOP PART (A) ///////
////////////////////////////

A_Z = 58;
A_Z_top = 16;
A_Y = 18;
A_X = 25;

A_topwall = 5;
A_hole_R = A_Y/2+2;
A_hole_Z = 33;

P1_R = biro_radius+slide; // 2.35 for M4; radius of plunger stalk

P2_R = Range_membrane_pin+1; // radius of plunger head, i.e. the screw
P2_R_minus = Range_membrane_pin;
P2_ZA = (P2_R_minus*2)-1; // 2 for M4; how high is screw head
P2_ZB = 15; // how deep can it go in B

P3_R = 1.5; // how big is the thread hole in bottom bit

P4_ZB = 15; // how deep can it go in B

PD_R = 6; // top plunger radius

screw_Z = 7;
screw_Xoff = 10.5;

A_Z2 = 5;
A_X2 = 12;
A_X3 = 8;

module A_main(){
translate([0,0,A_Z/2+A_Z_top/2])cube([A_X,A_Y,A_Z_top], center = true); // top main

translate([0,0,connect_Z/2])cube([A_X,A_Y,A_Z-connect_Z], center = true); // bottom main
translate([0,0,-A_Z/2+connect_Z/2])cube([connect_X*2,(connect_R-slide/2)*2,connect_Z], center = true); // connect
translate([connect_X,0,-A_Z/2+connect_Z/2])cylinder($fn = 50, r = connect_R-slide/4, h = connect_Z, center = true); // connect
translate([-connect_X,0,-A_Z/2+connect_Z/2])cylinder($fn = 50, r = connect_R-slide/4, h = connect_Z, center = true); // connect
}
module A_main_intersection(){
translate([0,0,0]){rotate([0,0,0]){cylinder($fn = 50, r = A_X/2, h = A_Z*5, center = true);}}} // A_Z*5 is lazy option!!
module A_main_smooth(){intersection(){A_main();A_main_intersection();}}

module A_extension(){
translate([A_X2,0,connect_Z/2+A_Z/2-A_Z2+A_Z_top])cube([A_X,A_Y,A_Z2], center = true); // topextension
rotate([0,-20,0]){translate([A_X2+10,0,connect_Z/2+A_Z/2-A_Z2+A_Z_top-10])cube([A_X,A_Y,A_Z2], center = true);} // topslant
}
module A_extension_intersec(){
translate([A_X2,0,connect_Z/2+A_Z/2-A_Z2+A_Z_top]){rotate([0,0,0]){cylinder($fn = 50, r = A_X/2, h = A_Z2*3, center = true);}}
}
module A_extension_smooth(){intersection(){A_extension();A_extension_intersec();}}

module A_expunger(){
translate([-A_X3,0,connect_Z/2])cube([A_X,A_Y,30*Expunger], center = true); //
rotate([0,45,0]){translate([-22,0,-10])cube([27*Expunger,A_Y,A_Z+15], center = true);} // topslant
rotate([0,-45,0]){translate([-22,0,34])cube([27*Expunger,A_Y,A_Z+15], center = true);} // bottomslant

}

module A_expunger_intersec(){
translate([-A_X3,0,0]){rotate([0,0,0]){cylinder($fn = 50, r = A_X/2, h = A_Z*3, center = true);}}
}
module A_expunger_smooth(){intersection(){A_expunger();A_expunger_intersec();}}

module A_total(){union(){A_main_smooth();A_extension_smooth();A_expunger_smooth();}}

module A_main_hole(){

translate([0,0,A_Z/2+(A_Z_top)/2-A_topwall/2+PD_R/2])cylinder($fn = 50, r = PD_R+slide, h = A_Z_top-A_topwall, center = true); // tophole
translate([0,0,A_Z/2+1])cylinder($fn = 50, r2 = PD_R+slide, r1 = P1_R, h = PD_R-1.5, center = true);; // tophole_rounding

translate([0,0,(A_Z-A_hole_Z)/2-A_topwall])cylinder($fn = 50, r = A_hole_R, h = A_hole_Z, center = true); // bottomhole
translate([0,0,(A_Z-A_hole_Z)/2-A_topwall-A_hole_Z/2-A_hole_R/2])cylinder($fn = 50, r2 = A_hole_R, r1 = P1_R, h = A_hole_R, center = true);; // bottomhole_rounding

translate([0,0,A_Z/2+A_Z_top-A_topwall/2]){rotate([0,0,0]){cylinder($fn = 50, r = PD_R+slide, h = A_topwall, center = true);}} // mainhole_toptop

translate([0,0,0]){rotate([0,0,0]){cylinder($fn = 50, r = P1_R, h = A_Z, center = true);}} // mainhole
translate([0,0,-A_Z/2+P2_ZA/2]){rotate([0,0,0]){cylinder($fn = 50, r = P2_R, h = P2_ZA, center = true);}} // screwhead

translate([0,30,0])cube([60,60,crosssection], center = true); //crosssection to check whats inside

translate([screw_Xoff,0,A_Z/2+A_Z_top-screw_Z/2]){rotate([0,0,0]){cylinder($fn = 50, r = screw_radius, h = screw_Z, center = true);}} // screw

translate([-A_X/2-2,0,0]){rotate([0,0,0]){cylinder($fn = 50, r = P1_R, h = A_Z*Expunger, center = true);}} // expunger thinhole
translate([-A_X/2-2,0,52]){rotate([0,0,0]){cylinder($fn = 50, r = 4, h = A_Z*2*Expunger, center = true);}} // expunger thickhole

}
difference(){A_total();A_main_hole();}

////////////////////////////
//// BOTTOM PART (B) ///////
////////////////////////////

B_Z = 40; //
B_exp_Z = 30;
B_exp_Z_hole = 20;

module B_main(){translate([0,0,-(A_Z+B_Z)/2-sep])cube([A_X,A_Y,B_Z], center = true);}

module B_main_intersection(){
translate([0,0,-(A_Z+B_Z)/2-sep]){rotate([0,0,0]){cylinder($fn = 50, r2 = A_X/2, r1 = A_X/4 , h = B_Z, center = true);}}}

module B_expunger(){
translate([-A_X3,0,-(A_Z+B_Z)/2-sep-(B_Z-B_exp_Z)/2])cube([A_X,A_Y,B_exp_Z*Expunger], center = true); //
//rotate([0,45,0]){translate([-22,0,-10])cube([27,A_Y,A_Z+15], center = true);} // topslant
//rotate([0,-45,0]){translate([-22,0,34])cube([27,A_Y,A_Z+15], center = true);} // bottomslant

}

module B_expunger_intersec(){
translate([-A_X3,0,-sep]){rotate([0,0,0]){cylinder($fn = 50, r = A_X/2, h = A_Z*3*Expunger, center = true);}}
}
module B_expunger_smooth(){intersection(){B_expunger();B_expunger_intersec();}}
module B_main_smooth(){intersection(){B_main();B_main_intersection();}}

module B_total(){ union(){ B_main_smooth();B_expunger_smooth();}}

module B_main_hole(){
translate([0,0,-(A_Z+B_Z)/2-sep+B_Z/2-connect_Z/2])cube([connect_X*2,(connect_R)*2,connect_Z], center = true); // connect
translate([connect_X,0,-(A_Z+B_Z)/2-sep+B_Z/2-connect_Z/2])cylinder($fn = 50, r = connect_R, h = connect_Z, center = true); // connect
translate([-connect_X,0,-(A_Z+B_Z)/2-sep+B_Z/2-connect_Z/2])cylinder($fn = 50, r = connect_R, h = connect_Z, center = true); // connect

translate([0,0,-(A_Z+B_Z)/2-sep]){rotate([0,0,0]){cylinder($fn = 50, r = P3_R, h = B_Z, center = true);}} // mainhole
translate([0,0,-(A_Z+B_Z)/2-sep+B_Z/2-connect_Z-P2_ZB/2]){rotate([0,0,0]){cylinder($fn = 50, r = P2_R, h = P2_ZB, center = true);}} // screwhead
translate([0,0,-(A_Z+B_Z)/2-sep-B_Z/2+P4_ZB/2]){rotate([0,0,0]){cylinder($fn = 50, r = shaft_radius+slide, h = P4_ZB, center = true);}} // bottomconnect

translate([-A_X/2-2,0,-(A_Z+B_Z)/2-sep-(B_Z-B_exp_Z)/2]){rotate([0,0,0]){cylinder($fn = 50, r = P1_R, h = B_exp_Z, center = true);}} // expunger thinhole
translate([-A_X/2-2,0,-(A_Z+B_Z)/2-sep-(B_Z-B_exp_Z)/2-(B_exp_Z-B_exp_Z_hole)/2]){rotate([0,0,0]){cylinder($fn = 50, r = 4, h = B_exp_Z_hole, center = true);}} // expunger thickhole

rotate([0,45,0]){translate([49,0,-9-(A_Z+B_Z)/2-sep])cube([20,A_Y,20], center = true);} // slant cut

translate([0,30,-(A_Z+B_Z)/2-sep])cube([60,60,crosssection], center = true); //crosssection to check whats inside

}

difference(){B_total();B_main_hole();}

////////////////////////////
//// Bottom plunger (C) ///
////////////////////////////

module C_main(){
translate([0,0,-2*sep])sphere($fn = 50, r=P2_R_minus, centre = true); // round
translate([0,0,-2*sep+(P2_R_minus)/2])cylinder($fn = 50, r = P2_R_minus, h = P2_R_minus, center = true); // cylinder
}

module C_hole(){
translate([0,0,-2*sep+1])cylinder($fn = 50, r = biro_radius+slide/3, h = (P2_R_minus-0.5)*2, center = true); // hole

translate([0,30,-2*sep])cube([60,60,crosssection], center = true); //crosssection to check whats inside
}

difference(){C_main();C_hole();}

////////////////////////////
//// Top plunger (D) ///
////////////////////////////

P0_R = 2.1;
P_Zextra = 30;

module D_main(){
translate([0,0,4*sep+7/2])sphere($fn = 50, r=PD_R, centre = true); // round
translate([0,0,4*sep-P_Zextra/2])cylinder($fn = 50, r = PD_R, h = PD_R+P_Zextra, center = true); // cylinder
}

module D_hole(){
translate([0,0,4*sep+PD_R/2-1])cylinder($fn = 50, r = biro_radius_tip+slide/3, h = PD_R*2, center = true); // hole small
translate([0,0,4*sep+PD_R/2-1-3])cylinder($fn = 50, r1 = P0_R+2, r2 = P0_R, h = PD_R, center = true); // hole expand
translate([0,0,4*sep-P_Zextra/2-PD_R/2-1])cylinder($fn = 50, r = P0_R+2, h = P_Zextra, center = true); // hole bigger bottom
translate([0,30,4*sep-P_Zextra/2-PD_R/2])cube([60,60,crosssection], center = true); //crosssection to check whats inside
}

difference(){D_main();D_hole();}

////////////////////////////
//// Regulator plunger (E) ///
////////////////////////////

offset = PD_R+2;

E_R = PD_R+3;
E_Z = Range_Z;
E_steps = Range_steps;
E_hole_R = 2+slide/3;

module E_main(){
translate([0,0,5*sep])cylinder($fn = 50, r = E_R, h = E_Z, center = true); // cylinder
}

module E_hole(){

// translate([0,0,5*sep])cylinder($fn = 50, r = E_hole_R, h = E_Z, center = true); // hole
translate([0,0,5*sep])cylinder($fn = 50, r = PD_R, h = E_Z, center = true); // centre big cut

for ( i = [0 : E_steps-1]){ // steps
assign (angle = i*360/E_steps)
translate([cos(angle)*offset,sin(angle) * offset ,5*sep+(E_Z/E_steps)*(i+1)])
rotate([0,0,angle-180/(E_steps-1)]) {cylinder($fn = 50, r = 4, h = E_Z, center = true);} // cylinder
}
}

difference(){E_main();E_hole();}

/////////////////////////////////
//// EXPUNGER PLUNGER (F)
//////////////////////////////////

F_Z = 30*Expunger;

module Expunger_plunger(){
translate([-A_X/2-2,0,57+sep]){rotate([0,0,0]){cylinder($fn = 50, r = 3.7, h = F_Z, center = true);}} // expunger thickhole
translate([-A_X/2-2,0,57+sep+15]){sphere($fn = 50, r=3.7*Expunger);}
// top

}

module Expunger_plunger_hole(){
translate([-A_X/2-2,0,4*sep+PD_R/2-1])cylinder($fn = 50, r = biro_radius_tip+slide/3, h = PD_R*2, center = true); // hole small
translate([-A_X/2-2,0,4*sep+PD_R/2-1-3])cylinder($fn = 50, r1 = P0_R+0.5, r2 = P0_R, h = PD_R, center = true); // hole expand
translate([-A_X/2-2,0,4*sep-P_Zextra/2-PD_R/2-1])cylinder($fn = 50, r = P0_R+0.5, h = P_Zextra, center = true); // hole bigger bottom
translate([0,30,100])cube([60,60,crosssection], center = true); //crosssection to check whats inside
}

difference(){Expunger_plunger();Expunger_plunger_hole();}

///////////////////////////////////////
//// EXPUNGER PLUNGER BOTTOM part (G)
//////////////////////////////////////

G_Z = 6*Expunger;

module G_main(){

translate([-5,0,-(A_Z+B_Z)/2-B_Z-sep])cube([10,A_X/2,G_Z], center = true); // connect
translate([0,0,-(A_Z+B_Z)/2-B_Z-sep]){rotate([0,0,0]){cylinder($fn = 50, r = A_X/4 , h =G_Z, center = true);}} // main circle
translate([-A_X/2-2,0,-(A_Z+B_Z)/2-B_Z-sep+G_Z*2.2]){rotate([0,0,0]){cylinder($fn = 50, r = 3.7, h = G_Z*2.5, center = true);}} //stick up
rotate([0,45,0]){translate([57,0,-9-(A_Z+B_Z)/2-sep-6])cube([31,A_Y,G_Z], center = true);} // slant
}

module G_main_intersection(){
translate([0,0,-(A_Z+B_Z)/2-B_Z-sep]){rotate([0,0,0]){cylinder($fn = 50, r = A_X/4 , h =G_Z, center = true);}} // main circle
translate([-A_X3-4,0,-(A_Z+B_Z)/2-B_Z-sep+10]){rotate([0,0,0]){cylinder($fn = 50, r = A_X/4 , h =G_Z+20, center = true);}} // side circle
translate([-6,0,-(A_Z+B_Z)/2-B_Z-sep])cube([11,A_X/2,G_Z], center = true); // connect
}

module G_total(){intersection(){G_main();G_main_intersection();}}

module G_main_hole(){
translate([0,0,-(A_Z+B_Z)/2-B_Z-sep]){rotate([0,0,0]){cylinder($fn = 50, r = shaft_radius+slide+0.5, h = G_Z, center = true);}} // mainhole
translate([-A_X/2-2,0,-(A_Z+B_Z)/2-B_Z-sep+2+G_Z*2]){rotate([0,0,0]){cylinder($fn = 50, r = biro_radius+slide/3, h = G_Z*3, center = true);}} // sidehole
translate([0,30,-(A_Z+B_Z)/2-B_Z-sep])cube([60,60,crosssection*Expunger], center = true); //crosssection to check whats inside

}

difference(){G_total();G_main_hole();}

```


[User]
Hey, I'm trying to design a 3D-printable bottom part for a custom mouse, and I'd really like to have an OpenSCAD file that's fully parametric. I'm imagining something that mirrors the provided example in terms of basic structure, but I need to be able to tweak everything.

Here's what I'm after:

**Overall Structure:**

*   The design is basically a flat, rounded rectangle with some support structures underneath.
*   I'll need to be able to control the overall length, width, and height of the main body.
*   There should be a cutout in the top surface for a sensor. This cutout also needs to be fully customizable.
*   I also need a small cutout on one side. It's supposed to be for your little finger to use when lifting the mouse. I'd like to control that size and position too.

**Mounting Holes:**

*   There should be several screw holes in the main body. Two on the front and four on the back (two per side), but their precise positions should be adjustable. I also need to control their size.
*   The idea is that these holes will be used to attach the bottom piece to the top piece and other components.

**Support Connectors:**

*   The design needs support "connectors" on the bottom. There should be three sets: a set on the back, a set on the left side, and a set on the right side. These connectors have a long cuboid part and then a small cube connector.
*   The positions of all of these support connectors need to be adjustable individually.

**Other things:**
*   The top and bottom parts of the mouse will be connected, which means that I need to design only one part in OpenSCAD. This top part should be able to rotate 180 degrees on the Z axis.

Could you help me create the OpenSCAD file(s) to make all of that? It would be great if all dimensions and positions are fully parametric. I would like to be able to control everything from the variables at the beginning of the file. I think everything can be contained in one file, but if you think it will be easier to split it up, that's also fine. Also, I'm not using any libraries, so I don't need any library files.

[Assistant]
bottom_customizer.scad:
```
//fn = 100;

bottom_back_connector_position = 80;//[35:105]
bottom_left_connector_position = -46;//[-56:-26]
bottom_right_connector_position = 44;//[24:52]
bottom_length = 10.8;//[10.8,10.9,11,11.1,11.2,11.3,11.4,11.5]
bottom_width = 6.8;//[6.8,6.9,7,7.1,7.2]
bottom_height = 7;//[7,8,9]
bottom_hole_radius = 25;//[15:25]
bottom_hole_length = 1;//[0.7,0.8,0.9,1,1.1,1.2,1.3,1.4,1.5]
bottom_hole_width = 0.5;//[0.3,0.4,0.5,0.6,0.7,0.8]
screw_hole_size = 3;//[1,2,3,4]

module bottom()
{
//MAIN BOTTOM PART
linear_extrude(bottom_height)
difference()
{
scale([bottom_length+1.3,bottom_width+0.8,0])
circle(10);

//HOLE FOR SENSOR
scale([bottom_hole_length,bottom_hole_width,6])
translate([10,0,0])
circle(bottom_hole_radius);

//FRONT SCREW HOLES
//LEFT
scale([1,1,15])
translate([-20,-59,0])
circle(screw_hole_size);
//RIGHT
scale([1,1,15])
translate([-20,59,0])
circle(screw_hole_size);

//BACK SCREW HOLES
//LEFT
scale(1,1,6)
translate([82,-36,0])
circle(screw_hole_size);
//RIGHT
scale(1,1,6)
translate([82,36,0])
circle(screw_hole_size);

//HOLE FOR LITTLE FINGER
scale([3,1,1])
translate([-12.5,bottom_width*18,0])
circle(7);
}

//BOTTOM SUPPORT

//BACK
//long
translate([bottom_back_connector_position,-20,7])
cube([4,40,10]);
//left
translate([bottom_back_connector_position-9,-20,15])
cube([10,10,2]);
//right
translate([bottom_back_connector_position-9,10,15])
cube([10,10,2]);

//LEFT
//long
translate([-55,bottom_left_connector_position,7])
cube([40,5,10]);
//right
translate([-25,bottom_left_connector_position+1 ,15])
cube([10,10,2]);
//left
translate([-55,bottom_left_connector_position+1,15])
cube([10,10,2]);

//RIGHT
//long
translate([-55,bottom_right_connector_position,7])
cube([40,5,10]);
//left
translate([-25,bottom_right_connector_position-5,15])
cube([10,10,2]);
//right
translate([-55,bottom_right_connector_position-5,15])
cube([10,10,2]);

}
//========================================//
scale(0.5)
{
rotate([0,0,180])
translate([0,0,-14])
bottom();
}
```


[User]
Okay, I'm looking to design a custom top housing for a 3D mouse, based on a project I found online. The basic idea is an ergonomic shell that can be used both on a surface and also held in the air for 3D manipulation. I have a few specific needs and parameters I'd like to make adjustable. I'd prefer a completely new design generated from scratch rather than trying to modify existing code.

The main shape I'm after is an elliptical shell. I need to be able to adjust the length, width, and height of this ellipse. Let's call them `ellipse_length`, `ellipse_width`, and `ellipse_height`, respectively. I want to also control the wall thickness with a parameter named `thickness_of_the_walls`. There should be a way to cut a flat bottom on the ellipse so it can sit on a surface.

I want to include a couple of holes for comfortable handling. One should be a "thumb hole" on the side, and the other is a "little finger hole" on the opposite side of the mouse, angled slightly. I'd like the size of these holes to be controlled by a `thumbsize` parameter.

The design should also include holes and connection points for attaching the top part to a bottom part, including four connection posts with screw holes (two in front and two in the back) controlled by `screw_hole_size`. I need connection points to attach to the bottom piece. Finally, I need side buttons, which can be simple rectangular extrusions with configurable height and width.

To summarize, here are the parameters I need:

*   `ellipse_length`: Length of the main ellipse.
*   `ellipse_width`: Width of the main ellipse.
*   `ellipse_height`: Height of the main ellipse.
*   `thickness_of_the_walls`: Thickness of the shell wall.
*   `screw_hole_size`: Diameter of the screw holes.
*   `thumbsize`: Size of the thumb and little finger holes.

I'd prefer the design to be in a parametric OpenSCAD file, or files if that makes more sense. I don't need to use any particular libraries, unless you think that would make something simpler. Let me know what you can do!

[Assistant]
top_customizer.scad:
```
//fn = 100;

ellipse_length = 10.8;//[10.8,10.9,11,11.1,11.2,11.3,11.4,11.5]
ellipse_width = 6.8;//[6.8,6.9,7,7.1,7.2]
ellipse_height = 7;//[7,8,9]

thickness_of_the_walls = 0.08; //[0.08,0.1,0.15,0.2,0.25,0.3]
screw_hole_size = 3;//[1,2,3,4]
thumbsize = 20;//[15:20]

//cut the bottom of the ellipse by cube
cube_x = 2*ellipse_length*10;
cube_y = 2*ellipse_width*10;
cube_z = 2*ellipse_height*10;

//========================================//
module main_part()
{
difference()
{
//main ellipse part
scale([ellipse_length+1.3,ellipse_width+0.8,ellipse_height])
sphere(10);

//========================================//
//bottom cutting cube
translate([-cube_x/2-20,-cube_y/2-10,-cube_z*20/19])
cube([cube_x+100,cube_y+100,cube_z]);

//cutting main ellipse out
scale([ellipse_length-thickness_of_the_walls,ellipse_width-thickness_of_the_walls,ellipse_height-thickness_of_the_walls])
sphere(10);

//========================================//

//thumb hole
translate([9,ellipse_width*10+10,20])
scale([2,thickness_of_the_walls-0.7,1])
sphere(thumbsize);

//========================================//
//little finger hole
rotate([0,45,0])
translate([9,-ellipse_width*10-10,25])
scale([2,thickness_of_the_walls-0.7,1])
sphere(thumbsize);
//========================================//
//HANDLER HOLE
//left
	rotate([90,90,90])
	translate([0,6,-170])
	cylinder(85,4,4,0);
//left
	rotate([90,90,90])
	translate([0,-6,-170])
	cylinder(85,4,4,0);

rotate([90,90,90])
translate([-2*10-55,0,40])
cube([70,3,110]);
rotate([90,90,90])
translate([-2*10-55,55,30])
cube([70,3,130]);
rotate([90,90,90])
translate([-2*10-55,-55,30])
cube([70,3,130]);
//HORIZONTAL LINE
rotate([90,0,0])
translate([-2*10+30,2,-58])
cube([120,3,113]);
}

//BUTTON STICKS
	//side buttons
	translate([70,-35,0.5])
	cube([10,10,41]);
   translate([66,32,-2.5])
	cube([10,10,40]);

//FRONT CONNECTORS
//RIGHT
difference(){
translate([20,59,-6])
cylinder(39,6,6,0);
translate([20,59.5,-6])
cylinder(16.5,screw_hole_size,screw_hole_size,0);
}
//CONNECTION TO THE WALL
linear_extrude(31)
translate([20,50,0])
polygon(points = [ [10,15],[-5,5],[-20,15.6]  ], paths=[[0,1,2,3]]);

//LEFT
difference()
{
translate([20,-59,-6])
cylinder(39,6,6,0);
translate([20,-59,-6])
cylinder(16.5,screw_hole_size,screw_hole_size,0);
}
//CONNECTION TO THE WALL
linear_extrude(31)
translate([20,-56,0])
polygon(points = [ [5,0],[14,-6],[-10,-10],[-5,0]  ], paths=[[0,1,2,3]]);

//BACK CONNECTORS
//RIGHT
difference()
{
translate([-82,36,-7])
cylinder(38,6,6,0);
translate([-82,36,-7])
cylinder(16.5,screw_hole_size,screw_hole_size,0);
}

//CONNECTION TO THE WALL
linear_extrude(30)
translate([-82,36,0])
polygon(points = [ [10,15],[5,-4],[-18,-10],[-5,5]  ], paths=[[0,1,2,3]]);

//LEFT
difference()
{
translate([-82,-36,-7])
cylinder(38,6,6,0);
translate([-82,-36,-7])
cylinder(16.5,screw_hole_size,screw_hole_size,0);
}
//CONNECTION TO THE WALL
difference()
{
linear_extrude(30)
translate([-82,-36,0])
polygon(points = [ [-14,5],[5,4],[10,-15]  ], paths=[[0,1,2]]);
}
}

scale(0.5)
{
main_part();
}
```


[User]
I need an OpenSCAD design for making Scrabble tiles. I'd like the tiles to be parametric, so I can easily adjust the size, thickness, and other features. Here are the basic requirements:

1.  **Tile Shape:** The tiles should be rectangular with rounded corners. The overall dimensions (length, width, and height) should be adjustable parameters. Also, the radius of the rounded corners should be adjustable.
2.  **Letter and Number:** Each tile should have a letter and a number embossed (raised) on its surface. Both the letter and the number should be separate text objects, and their position and size should be adjustable parameters. I'd like the font to be adjustable as well, and be able to use system fonts.
3.  **Embossing Depth:** The depth that the letter and number are raised should be a parameter.
4.  **Optional Cavity:** I want an optional cavity on the bottom of the tile. This cavity should be centered, circular, and have adjustable diameter and depth.
5.  **Font:** I should be able to specify the font used for the letter and the number. I'd like to be able to choose any font available on my system.
6.  **Variable Number Width:** The code should handle cases where the number is one or two digits (e.g., "1" vs "10") and position the number text accordingly, so it doesn't overlap the edges.

Could you generate an OpenSCAD file (or files, if it makes sense) that implements this? I'd like the code to be well-commented and easy to understand, if possible.

[Assistant]
scrabble.scad:
```
// scrabble tile generator, Glyn Cowles, revised Oct 2018
letter="A";
number="1";
sfont="Consolas";
/* [Hidden] */
ht=6.28; // tile height
x=18.9;  //  size
y=20.2;
dp=.6; // letter depth
lz=13; // letter size;
nz=4; // number size
$fn=50;
//----------------------------------------------------------------------

difference() {
	roundedRect([x,y,ht],1);
	if (number == "10") {
		#translate([1.5,5,ht-dp]) linear_extrude(dp)
            text(letter,size=lz,font=sfont);
		#translate([13,2.5,ht-dp]) linear_extrude(dp)
            text(number,size=nz-1,font=sfont);
	}
	else {
			#translate([3,5,ht-dp]) linear_extrude(dp)
            text(letter,size=lz,font=sfont);
		#translate([14,3,ht-dp]) linear_extrude(dp)
            text(number,size=nz,font=sfont);
	}
	translate([x/2,y/2,-2]) cylinder(r=8,h=4);
}

//----------------------------------------------------------------------
module roundedRect(size, radius) {
x = size[0];
y = size[1];
z = size[2];

linear_extrude(z)
hull() {
translate([radius, radius, 0])
circle(r=radius);

translate([x - radius, radius, 0])
circle(r=radius);

translate([x - radius, y - radius, 0])
circle(r=radius);

translate([radius, y - radius, 0])
circle(r=radius);
}
}
```


[User]
I'd like to design a wind turbine, and I need some OpenSCAD files to do it. I'm thinking of a setup like the picture I've attached, with a large pulley serving as the base for the turbine blades and a smaller pulley connecting to the motor. The two pulleys would be connected by a belt.

I already have a good starting point for the pulley design: `pulley_with_holes.scad`. I'd like you to generate new SCAD files to make both pulleys and the mounts. Here's how I'd like to break it down:

1.  **Large Pulley with Blade Mounts:** This will be similar to `pulley_with_holes.scad` but significantly larger, say with a diameter of 300mm. I'll also need a way to attach blades to it. Maybe we can have some threaded holes around the perimeter, or maybe some extrusions with screw holes. I'm not sure which is better, so feel free to suggest the best approach for that. These blade mounts would need to be parametric as well, such as the number of mounts. Also, the large pulley should include holes like in the `pulley_with_holes.scad` file, but with different parameters than the smaller pulley. The dimensions for the large pulley should be fully customizable.

2. **Small Pulley:** This will be another pulley like the one in `pulley_with_holes.scad`, but much smaller, maybe 30mm in diameter, and designed to attach to the motor shaft. The dimensions for the small pulley should also be fully customizable. We will make this one first to get an idea how we will mount the motor, and how that affects other parts.

3. **Motor Mount:** I need a way to securely mount the motor. This should have a base with screw holes for mounting to a surface and a cradle or clamp to hold the motor in place. The motor I'm planning to use has a cylindrical body, so a clamp-like approach might be best. This needs to be parametric to hold different sizes of motors.

4. **Belt:**  This will be a simple parametric design, just to check that the dimensions will work out. I can use a real belt later.

For all parts, please use the same style of parameters as `pulley_with_holes.scad` to make them easily customizable. Also I'd like to make sure I'm able to use a standard sized bolt to attach the parts, so make sure to add parameters for bolt size.

I'm hoping that you can use the code in `pulley_with_holes.scad` as a base for the pulley designs. Let's start with the small pulley and the motor mount. Then we can build out the large pulley and belt.

I'm thinking that MCAD might be useful for some of the screw and bolt holes, but other than that I don't have a preference for libraries you use.

[Assistant]
pulley_with_holes.scad:
```
// based on thing 5620  - in public domain

//Diameter screw hole in middle (mm)
innerD = 6; // [0:10]
//Diameter of the pulley (mm)
pulleyD = 80; //[10:200]
//Width of the pulley belt (mm)
beltwidth= 3; //[1:6]
//facets on the pulley
facets = 60; //[10:100]

//height lips that hold the belt on (added to pullyD) (mm)
lipheight = 3; //[1:10]
//thickness of the upper lip (mm)
lipthickness = 1; //[0:10]
//Angle the top lip overhang makes (increase to lower the profile)
topangle = 45;
//number of holes in the section
holenr = 6; //[0:10]
//gap size to avoid holes interconnecting (increase on interconnect)
gap = 5; //[0:20]
//second row of holes or not
secondholes = "True";  //[True, False]

function pi()=3.14159265358979323846;

$fn=facets; //faceting

//construction
translate([0,0,0])
	difference(){
	union(){
		cylinder(r=lipheight+pulleyD/2, h=lipthickness);
		cylinder(r=pulleyD/2, h = lipthickness*2+beltwidth+lipheight*cos(topangle));
		translate([0,0,lipthickness*2+beltwidth+lipheight*cos(topangle)])cylinder(r=lipheight+pulleyD/2, h=lipthickness);
		translate([0,0,beltwidth+lipthickness*2])cylinder(r1=pulleyD/2, r2=lipheight+pulleyD/2, h=lipheight*cos(topangle));
		}
		translate([0,0,-1])cylinder(r=innerD/2, h=lipthickness*2+beltwidth+lipheight*2);
   	holes();
}

widthhole=2*pi()*((pulleyD/2-innerD/2)/2-holenr/2)/(holenr+1);
lengthhole=(pulleyD-innerD)/2-gap;

module holes(){
	for (i=[1:holenr]) {
		rotate([0,0,i*360/holenr])
		translate([lengthhole/2+innerD/2+gap/2,0,-1]) scale([lengthhole/2,widthhole/2,1])
			cylinder(r=1, h=2*lipthickness+beltwidth+lipheight*4);
        if (secondholes == "True") {
            rotate([0,0,i*360/holenr+360/holenr/2])
            translate([3*lengthhole/4+innerD/2+gap/2,0,-1]) scale([lengthhole/4,widthhole/3,1])
                cylinder(r=1, h=2*lipthickness+beltwidth+lipheight*4);
        }
	}
}
```


[User]
I want a parametric OpenSCAD design for a shopping cart token that also functions as a small carabiner clip, so I can attach it to my keychain. I'd like the design to be customizable in a few ways.

First, the token part should be coin-shaped. I want to be able to specify the overall diameter, thickness, and the diameter of the recessed area (where the coin is thinner). I'd also like to control the thickness of that recessed area.

Second, the carabiner part should have a hook that extends from the coin. I want to specify the length of the straight portion coming off the coin, the angle of the angled portion, the radius of curvature for the curved portion, and the length of the final straight segment before the flexible clip.

Third, the clip itself needs to be parametric. I want to specify the number of loops, and the thickness of the flexible material of the clip.

Finally, I need to be able to include text on the token itself. The text string, the text offset in the X and Y directions, and text scaling factors in X and Y should all be customizable.

I'd like the design to use OpenSCAD primitives, and I'm not using any libraries at the moment, but if there's a really good one I might consider it, but let's start without.

[Assistant]
jetonCarab.scad:
```
// Carabinier parameters

// Coin parameters
// Thickness of the coin (2.33 for 1 EURO)
HCOIN=2.33;

// Radius of the coin (11.625 for 1 EURO)
DCOIN=11.625;

// Internal radius, ie radius of the thinner part. Arbitrary
DICOIN=10;

// Thickness of the inside. 1mm is strong enough, and let space for visible motif.
THCOIN=1;

// Dimensions of carabiner. Play with to understand each one role.
L1=8;

// Radius
R=8;

// Angle
A=40;

// Length
L2=10;

// Number of circonvolution of the flexible part. 0 for straight flexible part (not advised)
NL=3;

// Thickness of the flexible part
TH=0.8;

// Text part
// Text
YOURTEXT="Coin";

// X offset for text. Should be 0, unless you use some weird unicode
TEXT_OFFSETX=0;

// Y offset for text
TEXT_OFFSETY=0;

// scale factor for text width. Should be 1, unless you use some weird unicode
TEXT_SCALEX=1;

// scale factor for text height
TEXT_SCALEY=1;

VERSION=6;

// Logo file. Does not work with Thingiverse customizer.
// YOURLOGOFILE="propositionNewLogo.dxf";

// Scale and center the logo if needed
//LOGOX=-16; // Scale and center the logo
//LOGOY=-5;
//LOGOW=16;

// === End of parameters =================================================

/*
if ((!YOURTEXT || YOURTEXT=="") && YOURLOGOFILE) {
// Attempt to automatically resize logo. It will not fit exactly, but at least your logo should not be 1000 times smaller or larger than the coin. Adjust with LOGOX/Y/W
    translate([LOGOX,LOGOY,1]) resize([0,0,HCOIN-THCOIN]) resize([LOGOW,0,0], auto=true) scale([0.01, 0.01, 1]) linear_extrude(HCOIN-THCOIN) import(YOURLOGOFILE); // scale+resize is strange, I know. This is to bypass a bug in OpenScad 2013.06. This bug is documented and should be removed in next release of OpenScad
}
*/

if(YOURTEXT && YOURTEXT!=""){
   translate([-DICOIN*((len(YOURTEXT)==1)?1:0.8)+TEXT_OFFSETX, -DICOIN/2+TEXT_OFFSETY+1, 0]) resize([DICOIN*1.5*TEXT_SCALEX, DICOIN*0.9*TEXT_SCALEY, HCOIN]) linear_extrude(HCOIN) text(YOURTEXT);
}

// The coin
difference(){
   cylinder(h=HCOIN, r=DCOIN, $fn=100);
   translate([0, 0, THCOIN]) cylinder(h=HCOIN, r=DICOIN, $fn=100);
}

// First part of the hook. Straight part starting from coin of length L1
translate([-HCOIN/2, DCOIN-0.125, 0]) cube([HCOIN, L1, HCOIN]);

// Second part (turning in trigonometric direction) of the hook. A straight line at angle A
xbgoblique = -cos(A)*HCOIN/2;
ybgoblique = DCOIN-0.125+L1-HCOIN*0.5*cos(A)/sin(A)-HCOIN*0.5*cos(A)*cos(A)/sin(A);
lbgoblique = (R+xbgoblique)/sin(A);
translate([xbgoblique, ybgoblique ,0]) rotate(a=-A,v=[0,0,1]) cube([HCOIN,lbgoblique,HCOIN]);

// 3r part (vertical)
ybdoblique=ybgoblique-sin(A)*HCOIN;
yhdoblique=ybdoblique+cos(A)*lbgoblique;
translate([R-HCOIN,yhdoblique,0]) cube([HCOIN,L2,HCOIN]);

// 4th part (half a circle and a hosting part for flexible part)
translate([0, yhdoblique+L2, 0]) difference(){
   cylinder(h=HCOIN, r=R, $fn=40);
   translate([0,0,-1]) cylinder(h=HCOIN+2, r=R-HCOIN, $fn=40);
   translate([-25, -50-0.375*R, -25]) cube([50,50,50]);
   translate([0,-50,-25]) cube([50,50,50]);
   translate([-R+HCOIN+0.8,-0.375*R+HCOIN/2,HCOIN/2]) rotate([0,0,20]) rotate([90,0,0]) rotate([0,0,45]) color("red") cube([HCOIN, HCOIN, 3], center=true);
}

// 5th part, the flexible one
// Length of the flexible part
hress=yhdoblique+L2-DCOIN+0.125-L1-0.375*R-4.5;
lress=sqrt(R*R+hress*hress);

// One loop (has to be scaled par caller)
module oneloop(){
	difference(){
	   cylinder(h=HCOIN, r=1.3, $fn=10);
		translate([0,0,-0.01]) cylinder(h=HCOIN+0.02, r=1.3-TH, $fn=10);
		translate([0, -5, -0.01]) cube([10,10,HCOIN+0.02]);
	}
}

// A pair of them, linked together
module chain(){
	translate([-0.6, 0,0]) oneloop();
    translate([0.6, 2.6-TH, 0]) mirror([1,0,0]) oneloop();
	translate([-0.6,1.3-TH,0]) cube([1.2, TH, HCOIN]);
	translate([-0.6,3.9-2*TH,0]) cube([1.2, TH, HCOIN]);
}
LL=5.2-2*TH;

// A sequence of those, make a flexible part
module chaine(n){
   for(i=[0:1:n]) translate([0, LL*i,0]) chain();
}

// That "chaine" module has a fixed length of 3.6*NL. Caller must scale it to give if the wanted length

// End of the flexible part
module finress(){
	translate([-1.8,0,0]) cube([HCOIN,HCOIN,HCOIN]);
	translate([-0.5,0,0]) cube([1,4.5, HCOIN]);
	translate([-1.5,0,0]) rotate(a=-90, v=[1,0,0]) linear_extrude(4.5) polygon([[0,-HCOIN/2], [1,-HCOIN], [1,0]]);
}

translate([0, DCOIN-0.125+L1+0.7, 0]) rotate(a=40, v=[0,0,1]) scale([lress/NL/LL, lress/NL/LL, 1]) {
	chaine(NL-1);
	translate([0,NL*LL-1.3, 0]) scale([NL*LL/lress, NL*LL/lress, 1]) finress();
}

```


[User]
Okay, I'm looking to create a customizable desk nameplate, something that can be printed in two colors. I want it to have a base that's angled back a bit and then the text on top of that. I'd like to be able to specify the text, font, font size, letter spacing, and end spacing. I want the design to be parametric so I can change all of these things and have it re-render correctly.

For the base, I'd like a tilted trapezoidal shape that's centered. The text will then sit on top of this base. I need the text to be automatically centered on the base both horizontally and vertically. The base itself should be vertically centered along the Z-axis.

The design needs to support both single and dual extrusion printers. For a single extrusion printer, the entire nameplate should be rendered as one piece. For a dual extrusion setup, I would like to render two separate pieces. One would be just the base and the other would be just the text, so I can assign different colors to the extruders.

I think the original was inspired by TheNewHobbyist's work, so maybe look at his work for some inspiration. Also, the original used a write.scad library, so make sure to include something similar to handle the text generation. I don't want to use a specific one though.

Could you generate an OpenSCAD file or files that would do this? Please use a library for text rendering. I think using a DXF for font definition would be useful, but I'm not sure what libraries exist.

[Assistant]
desktop_nameplate-pub-v2.scad:
```
////////////////////////
//  Desk Nameplate
//
//  Oct 5, 2013
//  RLazure
//
//  This desktop nameplate is intended to be
//  printed in 2 colours.
//
//  Use the Pause @ZPos feature in the Replicator's
//  version 7.3 firmware.
//
//  This code is inspired in part
//			by TheNewHobbyist's
//  input parameters and label length calculations
//
//    Version 2 change to allow dualextrusion on the Replicator 2x
//			February 22, 2014
//
//////////////////////////////

// include <write.scad> for home computer
include <write/Write.scad>

///// inputs ////////////////

// What would you like to label?
label_text = "Startrek fan";

// What style of characters?
font = "Letters.dxf"; // ["write/BlackRose.dxf":Black Rose,"write/knewave.dxf":Knewave,"write/Letters.dxf":Letters,"write/orbitron.dxf":Orbitron]

// How big?
font_size = 12; //[8:20]

// Want to space out that text?
letter_spacing = 1; // // [0.9:Tight,1:Default,1.5:Wide]

// How much space on the ends?
end_space = 3; //[0:10]

//  Single or Dual Extrusion ?
part= "single"; // [single:full nameplate,dual1:base of nameplate,dual2: text of nameplate]

///////////////////  calculations  //////////////

width = (.6875*font_size*letter_spacing); // Find width of each character
totalwidth = width * len(label_text); // Find total width of text

length_extrude = totalwidth+(end_space*width);
textz_start_pos = totalwidth/2;
textx_start_pos = (24-font_size)/2 + font_size;

/////// debug ////////

echo("len label text= ",len(label_text));
echo("totalwidth= ",totalwidth);
echo("width = ",width);
echo("length_extrude = ",length_extrude);
echo("textz_start_pos = ",textz_start_pos);

///////////////////////////////////////
/////// modules ///////////////////////
//////////////////////////////////////
//
// --------------------------
module base(){
//
//  base on which text rests
//
   linear_extrude(height=length_extrude, center = true)
	polygon([[8,0],[0,16],[24,16],[16,0]], [[0,1,2,3]]);  // profile shape
				 }
//
//---------------------------
module text_plate()
//
// text on extrusion
//
				 {
	translate([textx_start_pos,15.5,textz_start_pos]) rotate([0,90,90])
	write(label_text,t=3.5,h=font_size,font=font,center=false);
				 }
//
// --------------------------
module print_part()
				{
//
//  assembly depending on single or dual extruder
//
if (part == "single")
		{
			union() {
				base();
				text_plate();
						}
		} else if (part == "dual1")
			{
				base();
		} else if (part == "dual2")
			{
				text_plate();
		}
}

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

// orient on platform

rotate([90,0,270])
translate([-12,0,0]) print_part();

```


[User]
Okay, I'm looking to create a pipette rack, and I like the general structure of the one in that rack_v1.scad file.  However, I want to be able to adjust it *a lot* more easily. I'd prefer something a bit more robust and a bit more modern. I'd like a set of parametric OpenSCAD files that would allow me to generate racks of different sizes and configurations.

Here's what I'm thinking:

**Core Structure:**

1.  **Main Beam (Top):** This should be the horizontal piece at the top, like in the original file.  I'd need to control the overall length (X), thickness (Y), and height (Z) of this beam, and the corner radius where the ends meet the main structure. I need the ends of the main beam to have a connector which can mate with the side pieces.
2.  **Side Pieces (Legs):** These are the vertical supports that attach to the main beam, and provide the base. They need to attach to the beam at the connector described above, and have a "foot" at the bottom with a flat rectangular base. I'd like control over the height (Z) of the sides, and the dimensions of the foot (X & Y). I also want to control the thickness of these.
3.  **Pipette Slots:**  The rack needs to have regularly spaced slots that will support the pipettes. I should be able to specify the number of slots, the width of the slot, the depth of the slot, and, if desired, the distance from the main beam to the top of the slot. It would be nice if I could control the vertical position of the slot. If I want a two sided slot, the slot should be mirrored to the bottom of the main beam.
4. **Connectors:** The method of connecting the main beam and the side piece should be parametrically adjustable. I want to avoid simple 90 degree joins.

**Parametric Controls:**

*   **`rack_length` (X):** Overall length of the rack (and main beam).
*   **`rack_height` (Z):** Overall height of the rack (side pieces).
*   **`beam_width` (Y):** Thickness of the main beam.
*   **`beam_height` (Z):** Height of the main beam.
*   **`beam_corner_radius`:** Radius of rounded corners of the main beam.
*   **`side_width` (X):** Thickness of the side pieces.
*   **`side_depth` (Y):** Depth of the side pieces
*   **`foot_length` (X):** Length of the foot on the side pieces.
*   **`foot_width` (Y):** Width of the foot on the side pieces.
*   **`num_slots`:** Number of pipette slots.
*   **`slot_width`:** Width of each pipette slot.
*   **`slot_depth`:** Depth of each pipette slot.
*    **`slot_offset`:** The vertical offset from the bottom of the main beam to the base of the slot.
*   **`slot_is_doublesided`:** Boolean flag for adding slots to the bottom side of the main beam.
*   **`side_connector_width`** The width of the connector which mates the side and main beam.
*    **`connector_radius`** The corner radius for the main beam connector.
*    **`tolerance`:** A global tolerance value to ensure a good fit between parts during 3D printing.
*    **`stability`:** A global scaling value that will increase the thickness of parts for stability.

**Other features:**

*   I'd like to use the `MCAD` library for things like the connector holes - and maybe for some basic primitives.
*   The final design should be easily customizable for different sizes of pipettes or other tubes.
*   It would be great if there were a simple way to adjust the spacing between slots.

I think this should provide a flexible foundation for a wide variety of pipette rack configurations, and I'd be very grateful if you could write the code for these files. Thank you!

[Assistant]
rack_v1.scad:
```
/// ///
/// PIPETTE RACK v1; 2014 02 24 ///
/// by Tom Baden (thingyverse ID: tbaden) ///
/// thomas.baden@uni-tuebingen.de ///
/// tombaden.wordpress.com ///
/// ///

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

// CUSTOMIZABLE VARIABLES
1_or_2_sided = 2; // [1,2]
// (will automatically adjust #slots..)
Length = 130; // [50:300]
Height = 180; //[150:220]

Foot_Y = 150; // [100:200]
Foot_X = 15; // [10:30]
// how thick are all the pieces? - multiplyer
Stability = 2; // [1:4]
// (printer precision)
Tolerance = 0.4; // [0.1, 0.2, 0.3, 0.4, 0.5]
///////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////
/// CUSTOMIZER CUTOFF: MODIFY ANYTHING BELOW HERE AT YOUR OWN RISK! ///////////////////
module customizer_cutoff(){};//////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////

sep = 20;

X = Length;
Z = Height;
Y = 18;

Wall_Y = 2*Stability;
Wall_Z = 3*Stability;
Wall_X = 4*Stability;

X_hanger = 11;
Y_hanger = 35;

slot_depth = 20;
slot_width = 5;

Foot_length = Foot_X;
Foot_width = Foot_Y;

R_end = 10;
R_end_inner = 6;
R_end_inner_minus = R_end_inner-Tolerance;
connect_width = sqrt(R_end_inner_minus*R_end_inner_minus*2);

Triangle_top = 30;

n_slots = round(X/50);

2_sided = 1_or_2_sided-1;

/////////////////// TOP (A)

module A(){
	cube([X,Wall_Y,Wall_Z], center = true ); // main beam
	translate([-X/2-R_end/2,0,0]){cylinder(r = R_end, h = Wall_Z, center = true );} // ends
	translate([X/2+R_end/2,0,0]){cylinder(r = R_end, h = Wall_Z, center = true );} // ends
	for (i = [1:n_slots]) { // protrusion
		translate([-X/2+(i-0.5)*X/n_slots,-Y_hanger/2-Wall_Y/2,0]){cube([X_hanger,Y_hanger,Wall_Z], center = true );} // main
		translate([-X/2+(i-0.5)*X/n_slots,-Y_hanger-Wall_Y/2,Wall_Z/2]){rotate([45,0,0]){ cube([X_hanger,sqrt(2*(Wall_Z*Wall_Z)),sqrt(2*(Wall_Z*Wall_Z))], center = true );}} // slope

		if (2_sided == 1) {
			translate([-X/2+(i-0.5)*X/n_slots,Y_hanger/2+Wall_Y/2,0]){cube([X_hanger,Y_hanger,Wall_Z], center = true );}
		translate([-X/2+(i-0.5)*X/n_slots,+Y_hanger+Wall_Y/2,Wall_Z/2]){rotate([45,0,0]){ cube([X_hanger,sqrt(2*(Wall_Z*Wall_Z)),sqrt(2*(Wall_Z*Wall_Z))], center = true );}} // slope
		}
	}
}
module A_sub(){
	translate([-X/2-R_end/2,0,0]){rotate([0,0,45]){
		cylinder($fn = 4, r = R_end_inner, h = Wall_Z, center = true );}} // end-hole
	translate([X/2+R_end/2,0,0]){rotate([0,0,45]){
		cylinder($fn = 4, r = R_end_inner, h = Wall_Z, center = true );}} // end-hole

	for (i = [1:n_slots]) { // slots
		translate([-X/2+(i-0.5)*X/n_slots,slot_depth/2-Y_hanger-Wall_Y/2,Wall_Z/2]){cube([slot_width,slot_depth,Wall_Z*2], center = true );}
		if (2_sided == 1) {
			translate([-X/2+(i-0.5)*X/n_slots,-slot_depth/2+Y_hanger+Wall_Y/2,Wall_Z/2]){cube([slot_width,slot_depth,Wall_Z*2], center = true);	}}
	}

	translate([0,-Y_hanger-Wall_Y*1.5,Wall_Z/2]){cube([X,Wall_Y*2,Wall_Z*2], center = true );} // Cut ends
	translate([0,Y_hanger+Wall_Y*1.5,Wall_Z/2]){cube([X,Wall_Y*2,Wall_Z*2], center = true );} // Cut ends
	translate([0,0,Wall_Z*1.5]){cube([X,(Y_hanger+Wall_Y)*2,Wall_Z], center = true );} // Cut top
}
difference(){A();A_sub();}

/////////////////// SIDE (B)

module B(){
	translate([-X/2-R_end/2-connect_width/2+Wall_X/2,0,-Z/2-Wall_Z/2-sep]){cube([Wall_X,Y,Z], center = true );} // main beam
	translate([-X/2-R_end/2,0,-sep]){rotate([0,0,45]){
		cylinder($fn = 4, r = R_end_inner_minus, h = Wall_Z, center = true );}} // connect_thingy
	translate([-X/2-R_end/2-connect_width/2+Foot_length/2,0,-Z-sep]){cube([Foot_length,Foot_width,Wall_Z], center = true );} // foot
//	translate([-X/2-R_end/2-connect_width/2+Wall_X/2,0,-sep-connect_width/2]){rotate([0,45,0]){cube([Triangle_top,Wall_Y,Triangle_top], center = true );}} // triangle
}
module B_sub(){

}
difference(){B();B_sub();}
```


[User]
I'd like to create a customizable wargaming measuring tool in OpenSCAD. I've got a basic concept working, but I need help making it more robust and parametric.

The tool is essentially a series of connected elements, each a cube with a slight recess, and the elements are aligned in rows. The first row has numbers on each element, and the other rows are blank. I also have a curved piece at the end of the first row.

Here's a breakdown of what I need:

1.  **Element:** Each element is a cube with a recessed top surface, creating a sort of frame effect. I want to control the overall `elementSize`, the `strength` (thickness) of the cube, the `markingStrength` (thickness of the recessed top), and `markingWidth` for the recess. There needs to be a conditional for text on the cubes using `writecube`, which is from the Write.scad library. The text should be placed on top and use the Orbitron font and have the size of the text adjustable.

2.  **Curved Part:** I need a curved end piece, which is essentially a quarter circle cut out of a rectangular block. Its dimensions should be tied to the element size. The radius should be one element size, and its dimensions (x, y) should be derived from the specified number of elements.

3.  **Measure Tool Module:** This module needs to generate the rows of elements. It should take two parameters: `aNr` which is the number of elements in the first (numbered) row, and `bNr` which is the number of elements in the other (blank) rows.

I'd like the output to be fully parametric, with all dimensions controllable by variables at the top of the file. I’d also like all sizes to be linked to each other, so if the `elementSize` is changed, the curve and text resize automatically.

Can you create the necessary OpenSCAD files to handle this? I would expect the file to include and use `Write.scad`.

[Assistant]
MeasureTool_custom.scad:
```
include <write/Write.scad>
// use <Write.scad>
// http://curriculum.makerbot.com/daily_lessons/february/openscad_write.html

elementSize = 25; // [5:50]
strength = 2; // [1:5]
markingStrength = 1;
markingWidth = .75;

module element(marking) {
	difference() {
 		cube(size = [elementSize, elementSize, strength+markingStrength], center = false);
		translate([markingWidth, markingWidth, strength])
			cube(size = [elementSize-2*markingWidth, elementSize-2*markingWidth, markingStrength]);
}

if(marking != "")
	writecube(text=marking, where=[elementSize/2,elementSize/2,strength], size=[elementSize, elementSize, strength], face="top", font = "orbitron.dxf", h=.7*elementSize, t=markingStrength);
}

module curvedPart(x,y) {
	translate([x,y,0])
	intersection() {
		cube(size=[x, y, strength], center=false);
		difference() {
			cube(size=[2*x, 2*y, strength], center=false);
			translate([x,y,0])
				resize(newsize=[2*x, 2*y, strengtgh])
					cylinder(h=strength, r=x, $fn=36);
		}
	}
}

module measureTool(aNr, bNr) {
	for ( i = [0 : aNr-1] )
	{
		translate([i*elementSize, 0, 0])
			element(str(i+1));
	}
	for ( i = [0 : bNr-1] )
	{
		translate([i*elementSize, elementSize, 0])
			element("");
	}
}

measureTool(8,4);
curvedPart(elementSize*4, elementSize*1);
```


[User]
Hey there, I'm looking to generate some miniature bases for tabletop games, and I'd like a script that allows for a lot of customization. I'd like it to be parametric so I can easily adjust things.

Here's what I need:

First, I need to be able to choose the shape of the base. I want to be able to pick from a triangle, square, pentagon, hexagon, heptagon, octagon, or a circle. I want to specify this as an integer (e.g., 3 for a triangle, 4 for a square, etc.) and 50 for a circle.

Next, I need to specify the diameter of the base. I want to give this as a single value that represents the diameter across the flats (side-to-side) for polygons, but the actual diameter for a circle.

I need to be able to set the thickness of the base as well.

I also need an option to include a slot in the base (yes/no). If there's a slot, I need to choose if the slot is oriented so it is across the flats or from a corner to a corner for non-circular bases.

Finally, I need to choose how many rows and columns of bases to create so I can make multiples at once.

So, to summarize, I need:

*   **Base Shape**:  triangle, square, pentagon, hexagon, heptagon, octagon, or circle specified as an integer.
*   **Diameter**: diameter across flats (side-to-side) for polygons, standard diameter for circle
*   **Thickness**: height of the base
*   **Slot**: option to add a slot, yes/no
*   **Slot Orientation**:  Across flats or vertex-to-vertex for polygons (not applicable to circles)
*   **Rows**: number of rows of bases
*   **Columns**: number of columns of bases

I don't need anything complex with library files - I think a single script should be sufficient.

Thanks!

[Assistant]
base_generator.scad:
```
// Base generator and customizer script
// developed by Daniel Joyce
// 3D-Miniatures.com

/* [Global] */

// Polygon
base_style = 4; // [3:triangle,4:square,5:pentagon,6:hexagon,7:heptagon,8:octagon,50:round]

// Base diameter,
diameter = 25; // [15:250]

// Thickness of base, ~3 mm is std
thickness = 3; // [1:25]

// Should base have a slot
slot = 1; // [1:yes, 2:no]

// Orientation of slot
slot_orientation = 1; // [1:sides, 2:verts]

// Normally 25 mm square / hex base diameter is measured side to side
across_sides = 1; // [0:no, 1:yes]

// Number of rows of bases
rows = 1; // [1:10]

// Number of columns of bases
columns = 1; // [1:10]

/* [Hidden] */

radius = diameter / 2;

cos_r = cos(360/(2*base_style));

scale_factor = across_sides == 0 ? 1 : 1 / cos_r;

offset = (diameter * scale_factor) + 2;

module base(sides,
	diameter = 25,
	slot = false,
	height = 3.33,
	slot_x = true,
	inset = false ){
	radius = diameter / 2;
	cos_r = cos(360/(2*sides));

	scale_factor = inset ? 1 : 1 / cos_r;
	slot_width = cos(360/(2*sides))*diameter*0.9*scale_factor;
	even = sides % 2 == 0;
	slot_angle = even ? 360 / (2*sides) : 90;
	slot_r = slot_x ? 0 : slot_angle;
	difference(){
		scale([scale_factor,scale_factor,1]) rotate([0,0,360/(2*sides)]) cylinder(h = height, r1=radius, r2=radius-0.5, $fn=sides);
		if(slot){
			rotate([0,0, slot_r]) cube([2.3,slot_width,height+10], center=true);
		}
	}
}

module make_x_by_y(x,y,offset){
	for(j = [0:y]){
		for(i = [0:x]){
			translate([i*offset,j*offset,0]) child(0);
		}
	}

}

make_x_by_y(rows - 1,columns - 1,offset){
	base(base_style,
		diameter = diameter,
		slot = (slot==1),
		height = thickness,
		inset = (across_sides == 0),
		slot_x = (slot_orientation==1) );
}

```


[User]
I'd like to design a simple, adjustable stand for an iPad, and I'd like to use OpenSCAD to make it easily customizable. I have some basic ideas, but I need help getting them into code.

The stand should consist of two identical leg pieces connected by two bars. Each leg will have a base, an angled support arm for the iPad to rest on, and an angled back support. The angle of the iPad itself (let's call this `Angle`) and the back support angle (`BackAngle`) should be parameters that I can change. I'd like the length of the support arm (`SupportLength`) and the length of the connecting bars (`BarLength`) to also be adjustable parameters. Finally, I also need a `Tolerance` parameter, to allow for printing tolerances.

The design should be parametric and all dimensions should be calculated based on the parameters. The legs should have some sort of lip or feature to hold the iPad in place, maybe at the front edge of the support arm and the back edge of the back support.  I was thinking the base of the legs should have some kind of cutout to allow for the connecting bars to fit in. The bars should also have some kind of pegs or inserts to fit into the cutout on the base of the legs.

I'd like to be able to preview the assembled stand, or just the leg or just the bar, individually. I'm not too familiar with OpenSCAD's functions yet. I have an idea of how to calculate the position of the parts, but I'm not sure how to implement it in SCAD code. Can you help me generate this OpenSCAD design? I don't need any additional libraries for now, I prefer to keep this simple.

[Assistant]
iPad_Stand.scad:
```

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

// Angle of iPad on stand;
Angle = 45; // [10:80]
// Angle of back support;
BackAngle = 25; // [10:80]
// Length of support
SupportLength = 120; // [50:240]
// Length of connecting bars
BarLength = 80; // [20:200]
Tolerance = 0.1; // [0, 0.1, 0.2, 0.3, 0.4, 0.5]

part = "Assembled"; // [Assembled: Assembled, Side: Side, Bar: Bar]

SubAngle = -(90-Angle);

SharedAngle = -SubAngle + BackAngle;
comp = (10/sin(SharedAngle));

truecomp = (SharedAngle > 90 ? comp : (SharedAngle == 90 ? 1 : 0));

echo(truecomp);

SubBackAngle = (90-BackAngle);

if(part=="Assembled")
{
	rotate([90, 0, 0]) Leg(Angle, BackAngle, SupportLength, Tolerance);

	translate([0, BarLength+10, 0])rotate([90, 0, 0]) Leg(Angle, BackAngle, SupportLength, Tolerance);
	rotate([-90, 0, 90]) translate([-10, -10, -10]) Bar(BarLength, Tolerance);
	rotate([-90, 0, 90]) translate([-10, -10, -10 - (cos(Angle)*SupportLength + sin(BackAngle)*(sin(Angle)*SupportLength)/cos(BackAngle)-10 + 10 - 10*tan(BackAngle))]) Bar(BarLength, Tolerance);
}
if(part=="Side")
{
	Leg(Angle, BackAngle, SupportLength, Tolerance);
}
if(part=="Bar")
{
	Bar(BarLength, Tolerance);
}

module Bar(BarLength, Tolerance)
{
	difference()
	{
		cube([BarLength+20, 10, 10]);
		translate([-0.5, 7 - Tolerance, -0.5]) cube([10.5+ Tolerance, 4 + Tolerance, 11]);
		translate([-0.5, -1 + Tolerance, -0.5]) cube([10.5+ Tolerance, 4, 11]);
		translate([-0.5, -0.5, 7 - Tolerance * 2]) cube([10.5+ Tolerance, 11, 4 + Tolerance * 2]);
		translate([BarLength+10 - Tolerance, 7 - Tolerance, -0.5]) cube([10.5 + Tolerance, 4 + Tolerance, 11]);
		translate([BarLength+10 - Tolerance, -1 + Tolerance, -0.5]) cube([10.5+ Tolerance, 4, 11]);
		translate([BarLength+10 - Tolerance, -0.5, 7 - Tolerance * 2]) cube([10.5+ Tolerance, 11, 4 + Tolerance * 2]);
	}
}

module Leg(Angle, BackAngle, SupportLength, Tolerance)
{
difference()
{
	union()
	{
		cube([10, 10, 10]);
		rotate([0, 0, SubAngle]) translate([-24, 0, 0]) cube([24, 10, 10]);
		rotate([0, 0, Angle]) translate([0, 14, 0]) cube([20, 10, 10]);
//		rotate([0, 0, SubAngle]) translate([-14, 10, 0]) %cube([10, 10, 10]);
		translate([10, 0, 0]) rotate([0, 0, Angle]) translate([0, 0, 0]) cube([SupportLength, 10, 10]);

		difference()
		{
			cube([cos(Angle)*SupportLength + sin(BackAngle)*(sin(Angle)*SupportLength)/cos(BackAngle) + 10 - 10*tan(BackAngle), 10, 10]);
//			translate([10, 0, 0]) rotate([0, 0, Angle]) translate([SupportLength, 0, 0]) rotate([0, 0, -Angle + BackAngle+90]) translate([(-sin(Angle)*SupportLength)/cos(BackAngle), -10, -0.5]) cube([(sin(Angle)*SupportLength)/cos(BackAngle), 10, 11]);
		}

		difference()
		{
			translate([10, 0, 0]) rotate([0, 0, Angle]) translate([SupportLength, 0, 0]) rotate([0, 0, -Angle + BackAngle+90]) translate([(-sin(Angle)*SupportLength)/cos(BackAngle), 0, 0]) cube([(sin(Angle)*SupportLength)/cos(BackAngle) + truecomp, 10, 10]);
			translate([0, -10, -0.5]) cube([cos(Angle)*SupportLength + sin(BackAngle)*(sin(Angle)*SupportLength)/cos(BackAngle) + 10*tan(SubBackAngle), 10, 11]);
		}
	}
	translate([3 + Tolerance, 3, -0.5]) cube([7, 4, 11]);
	translate([cos(Angle)*SupportLength + sin(BackAngle)*(sin(Angle)*SupportLength)/cos(BackAngle)- 7 + Tolerance + 10 - 10*tan(BackAngle), 3, -0.5]) cube([8, 4, 11]);
	translate([cos(Angle)*SupportLength + sin(BackAngle)*(sin(Angle)*SupportLength)/cos(BackAngle) + 10 - 10*tan(BackAngle), -10, -0.5]) cube([20, 20, 11]);
}
}
```


[User]
I'd like to design a rounded drawer knob, and I'm hoping you can help me generate the OpenSCAD code. I've got some specific dimensions and features in mind, but I'd also like it to be parametric so I can tweak it easily later.

Here's what I'm thinking: The basic knob shape will be like a half-sphere (or maybe a meniscus shape, like a slice of a sphere) on top of a flat base. The whole thing should be nicely rounded. I'd also like to have two pinch points on opposite sides, like notches, to provide a place for fingers to grip it. Finally, it needs a hole in the bottom for a screw.

Here are the specific parameters I have in mind, and I'd love for these to be easy to change:

*   **`radius`**: The overall radius of the knob, which would define the width and depth, before the rounding is added.
*   **`height`**: The overall height of the knob.
*   **`pinch_vofs`**: The vertical offset of the pinch notches from the bottom of the knob.
*   **`pinch_hofs`**: The horizontal offset of the pinch notches from the center of the knob, measured to the center of the notch.
*  **`pinch_w`**: The width of the pinch notches
*   **`pinch_round`**: The radius of the rounded corners of the pinch notches.
*   **`screw_r`**: The radius of the screw hole.
*   **`screw_d`**:  The depth of the screw hole
*   **`rounding`**: The amount of rounding added to all the edges via a Minkowski sum with a sphere.
*  **`rounding_bottom_trim`**: How much of the rounding is trimmed from the bottom.

For the code, please make sure to define these values as variables, so it’s easy to change them later.

Also, for the rendering, I was thinking it'd be good if the rounding was done using a Minkowski sum. Finally, it looks like the design uses a `roundedCube8` module and a `meniscus` module. Please include the code for those in the output. I do not have these modules, and it'd be great if those could be provided as well. I'm not using any external libraries either, so no need to worry about including anything from an external library. I'm happy to have them all in a single file.

[Assistant]
doorknob.scad:
```
radius = 18 + 1.5;          // Total radius
height = 8.25 + 1.5 + 0.5;  // Total height

pinch_vofs = 0.5 + 1.5;  // Notch offset from bottom
pinch_hofs = 3.5 + 1.5;  // Notch offset from center
pinch_w = 20 - 2*1.5;    // Notch width
pinch_round = 3.75;      // Notch round corner radius

screw_r = 2.9/2;  // M3 loose tap
screw_d = 7.5;

rounding = 1.5;  // Minkowski sum sphere radius
rounding_bottom_trim = 0.5;

//include <lib/util.scad>
module roundedCube8(dim, r, center=false) {
  width = dim[0];
  height = dim[1];
  depth = dim[2];
  centerx = (center[0] == undef ? center : center[0]);
  centery = (center[1] == undef ? center : center[1]);
  centerz = (center[2] == undef ? center : center[2]);
  translate([r - (centerx ? width/2 : 0), r - (centery ? height/2 : 0), r - (centerz ? depth/2 : 0)]) hull() {
    // Edges (bottom)
    translate([0, 0, 0]) rotate([-90, 0, 0]) cylinder(h = height-2*r,r = r);
    translate([width-2*r, 0, 0]) rotate([-90, 0, 0]) cylinder(h = height-2*r,r = r);
    translate([0, 0, 0]) rotate([0, 90, 0]) cylinder(h = width-2*r, r = r);
    translate([0, height-2*r, 0]) rotate([0, 90, 0]) cylinder(h = width-2*r, r = r);
    // Edges (vertical)
    translate([0, 0, 0]) cylinder(h = depth-2*r, r = r);
    translate([width-2*r, 0, 0]) cylinder(h = depth-3*r, r = r);
    translate([0, height-2*r, 0]) cylinder(h = depth-2*r, r = r);
    translate([width-2*r, height-2*r, 0]) cylinder(h = depth-2*r, r = r);
    // Edges (top): not needed with hull()

    // Corners (bottom)
    translate([0, 0, 0]) sphere(r);
    translate([width-2*r, 0, 0]) sphere(r);
    translate([0, height-2*r, 0]) sphere(r);
    translate([width-2*r, height-2*r, 0]) sphere(r);
    // Corners (top)
    translate([0, 0, depth-2*r]) sphere(r);
    translate([width-2*r, 0, depth-2*r]) sphere(r);
    translate([0, height-2*r, depth-2*r]) sphere(r);
    translate([width-2*r, height-2*r, depth-2*r]) sphere(r);

  }
}

module meniscus(r, h) {
  sphere_r = 0.5*(h+r*r/h);
  //echo(sphere_r);
  difference() {
    translate([0, 0, h-sphere_r]) sphere(r=sphere_r);
    translate([-sphere_r-1, -sphere_r-1, -2*sphere_r-1]) cube([2*sphere_r+2, 2*sphere_r+2, 2*sphere_r+1]);
  }
}

// Adjust notch cutout for Minkowski expansion
notch_w = pinch_w + 2*rounding;
notch_d = 2*radius;
notch_h = height - rounding + rounding/3;
notch_round = pinch_round;

difference() {
  minkowski() {
    difference() {
      // Main shape
      meniscus(radius - rounding, height - rounding - rounding_bottom_trim, $fn=36);
      // Pinch notches
      for (s=[-1,+1]) translate([-notch_w/2, -notch_d/2 + s*(notch_d/2+pinch_hofs-rounding), pinch_vofs - rounding]) roundedCube8([notch_w, notch_d, notch_h], r=notch_round, $fn=12);
      // Screw hole
      //translate([0, 0, -1]) cylinder(r=2.95/2, h=10+1, $fn=18);
    }
    sphere(r=rounding, $fn=9);
  }
  // Screw hole
  translate([0, 0, -rounding-1]) cylinder(r=screw_r, h=screw_d + rounding+1, $fn=18);
  // Bottom adjustment
  translate([-radius-1, -radius-1, -rounding-1-rounding_bottom_trim]) cube([2*radius+2, 2*radius+2, rounding+1]);
}

```


[User]
Hey, I'm looking for some help designing a parametric stretchy bracelet in OpenSCAD. I really like the concept of the original design on Thingiverse by Emmet, but I want to explore some different edge styles. Specifically, I'd like two versions: one with a smoothly curved edge and another with a series of five ridges.

Here's what I'm thinking for the overall design and parameters that should be adjustable:

*   **Major Radius (r2):** The radius of the main circle the bracelet forms.
*   **Thickness (h):** The difference in radius between the inside and outside of the bracelet.
*   **Width (w):** The width of the bracelet band.
*   **Layer Width/Gap Width (t):** The width of the material layer and the gap between layers of the flexible section.
*   **Number of Twisty Shapes (n):** The number of twisty, helix-like shapes around the circumference of the bracelet (for the original textured version). I'd like this to be an available parameter, even if it's not used for my specific design.
*   **Number of Bendy Parts (m):** The number of flexible, bendy parts around the circumference. These form the actual stretching mechanism of the bracelet.

Here's how I want each version to differ from the original design:

**Smooth Edge Bracelet:**

*   Instead of the twisting helix shapes, I want a smooth, rounded edge profile. Think of a continuous curved surface on the edge of the bracelet.
*   This smooth curvature should be created by a rotated extrusion.
*   The main "stretchy" section should still use the bendy parts with a gap, like in the original design.

**Five Ridge Bracelet:**

*   Instead of the smooth edge, this version should have five circular ridges on the edge of the bracelet.
*   Each ridge should be a rotated extrusion.
*   The main "stretchy" section should still use the bendy parts with a gap, like in the original design.

Can you create one or more OpenSCAD files that will create both these designs? I'd like to have control over all the parameters listed above. I don't have any existing code for the project other than some examples, so you'll be starting from scratch. I'm not using any libraries.

[Assistant]
Stretchlet_five_ridges.scad:
```
// stretchy bracelet

r2=30;// major radius
h=8;// thickness (difference in radius between inside and outside
w=15;// width
t=0.5;// layer width and gap width
n=20;// number of twisty shapes around the circle
m=27;// number of bendy parts around the circle

pi=3.14159;
rr=pi*r2/n;
r1=rr*1.5;
ro=r2+(r1+rr)*0.5;
ri=ro-h;
a=pi*2*ri/m-t;
echo("Inside Diameter = ",2*ri);

solid();
//hollow();

module solid(){
difference(){
	// Uncomment one of these three lines for different styles
	//base(r1=r1,w=w);// original angled cording
	base1(r1=r1,w=w);// horizontal cording
	//cylinder(r=ro,h=w,$fn=m);// flat

	for(i=[1:m])rotate([0,0,i*360/m])
		translate([0,0,-0.03])linear_extrude(height=w+0.06)
			polygon(points=[[ri+t,a/2-t],[ri+t,t-a/2],[ro+t*h/a,0]],paths=[[0,1,2]]);
}}

module hollow(){
difference(){
	base(r1=r1,w=w);
	difference(){
		translate([0,0,-0.01])base(r1=r1-t,w=w+0.02);
		for(i=[1:m])rotate([0,0,i*360/m])
			translate([0,0,-0.02])linear_extrude(height=w+0.04)
				polygon(points=[[ri,a/2],[ri,-a/2],[ro+3*t*h/a,0]],paths=[[0,1,2]]);
	}
	for(i=[1:m])rotate([0,0,i*360/m])
		translate([0,0,-0.03])linear_extrude(height=w+0.06)
			polygon(points=[[ri+t,a/2-t],[ri+t,t-a/2],[ro+t*h/a,0]],paths=[[0,1,2]]);
}}

module base(r1,w){
render()
union(){
	cylinder(r=r2+rr*0.5,h=w);
	for(i=[1:n]){
		rotate([0,0,i*360/n])translate([0,-r2,0])
		scale([1,0.5,1])linear_extrude(height=w,twist=180,slices=10)
			translate([rr,0,0])circle(r=r1,$fn=20);
	}
}}

module base1(r1,w){
union(){
	cylinder(r=ro-1.5,h=w,$fn=100);
	for(i=[1:5]){
		translate([0,0,(i-1.5)*3+1+2])scale([1,1,1])rotate_extrude($fn=100)
			translate([ro-1.5,0,0])circle(r=1.5,$fn=20);
	}
}}
```
Stretchlet_smooth.scad:
```
// stretchy bracelet

r2=30;// major radius
h=8;// thickness (difference in radius between inside and outside
w=15;// width
t=0.5;// layer width and gap width
n=20;// number of twisty shapes around the circle
m=27;// number of bendy parts around the circle

pi=3.14159;
rr=pi*r2/n;
r1=rr*1.5;
ro=r2+(r1+rr)*0.5;
ri=ro-h;
a=pi*2*ri/m-t;
echo("Inside Diameter = ",2*ri);

solid();
//hollow();

module solid(){
difference(){
	// Uncomment one of these three lines for different styles
	//base(r1=r1,w=w);// original angled cording
	base1(r1=r1,w=w);// horizontal cording
	//cylinder(r=ro,h=w,$fn=m);// flat

	for(i=[1:m])rotate([0,0,i*360/m])
		translate([0,0,-0.03])linear_extrude(height=w+0.06)
			polygon(points=[[ri+t,a/2-t],[ri+t,t-a/2],[ro+t*h/a,0]],paths=[[0,1,2]]);
}}

module hollow(){
difference(){
	base(r1=r1,w=w);
	difference(){
		translate([0,0,-0.01])base(r1=r1-t,w=w+0.02);
		for(i=[1:m])rotate([0,0,i*360/m])
			translate([0,0,-0.02])linear_extrude(height=w+0.04)
				polygon(points=[[ri,a/2],[ri,-a/2],[ro+3*t*h/a,0]],paths=[[0,1,2]]);
	}
	for(i=[1:m])rotate([0,0,i*360/m])
		translate([0,0,-0.03])linear_extrude(height=w+0.06)
			polygon(points=[[ri+t,a/2-t],[ri+t,t-a/2],[ro+t*h/a,0]],paths=[[0,1,2]]);
}}

module base(r1,w){
render()
union(){
	cylinder(r=r2+rr*0.5,h=w);
	for(i=[1:n]){
		rotate([0,0,i*360/n])translate([0,-r2,0])
		scale([1,0.5,1])linear_extrude(height=w,twist=180,slices=10)
			translate([rr,0,0])circle(r=r1,$fn=20);
	}
}}

module base1(r1,w){
union(){
	cylinder(r=ro-1.5,h=w,$fn=100);
		translate([0,0,7.5])scale([1,1,5])rotate_extrude($fn=100)
			translate([ro-1.5,0,0])circle(r=1.5,$fn=20);

}}
```


[User]
I want to create a set of numbered blocks, kind of like Cuisenaire rods but all the same size, where the numbers are embossed on the top and front of each block. I'd like to be able to customize the number of blocks, the size of the blocks, and the size and depth of the numbers. It would be great if I could control whether the numbers are always oriented to be ascending when viewed right-side up, and whether the number on the top or front can be recessed rather than extruded. I'd also like to have a chamfer on the edges of the block to make it look a bit nicer. I want to use the `write` module from the Write.scad library for the numbers.

So, to summarize, I'd like a parametric OpenSCAD file that lets me define:

*   `N`: The number of blocks in the set.
*   `block_width`: The width (and therefore height and depth) of each block.
*   `digits_always_ascending`: A boolean-ish value (maybe "yes" or "no") to control whether the front numbers are always oriented upright when looking at the array of blocks.
*   `recess_highest_digit`: A boolean-ish value (maybe "yes" or "no") to control if the digits are recessed or extruded.
*   `digit_size`: The size of the digits, as a percentage of `block_width`.
*  `digit_depth`: The depth of the digits as a percentage of `block_width`.
*   `chamfer_percentage`: The size of the chamfer on the edges of the block, as a percentage of `block_width`.

The numbers should be placed on the top and front faces of the block. The top number should correspond to the block's position when the blocks are arranged in order from 1 to `N`. The front number should be the same number if ascending is on or else the reverse, meaning it goes from N to 1. The numbers should be centered on each face. The blocks should be arranged in a row, spaced apart by `block_width`. The `write` module should be used to create the embossed/recessed digits. I'm okay with using the `Write.scad` library - I don't need you to generate that.

Could you generate the OpenSCAD file for this?

[Assistant]
new_counting_blocks.scad:
```
N = 5; // [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20]
block_width = 10; // [5:30]
// Rotate digits so they are always ascending when viewed right-side up
digits_always_ascending = "no"; // [no,yes]
dgts_asc = (digits_always_ascending=="yes"?1:0);
recess_highest_digit = "yes"; // [no,yes]
recess_hghst = (recess_highest_digit=="yes"?1:0);
// Digit size as percentage of block width
digit_size = 50; // [30:90]
digit_frac = digit_size/100;
// Digit depth as percentage of block width
digit_depth = 10; // [5:25]
digit_d = digit_depth/100;
// Chamfer as percentage of block width
chamfer_percentage = 10; // [0:20]
chamfer_frac = chamfer_percentage/100;

/* [Hidden] */
eps = 1e-5;

include <write/Write.scad>;

for (i=[1:N]) translate([(i-(N+1)/2)*block_width , 0, 0]) cuisinaire_block(block_width, i, (N+1-i), recess_hghst*(i==N?1:0), recess_hghst*(i==1?1:0));

module cuisinaire_block (width, top_digit, front_digit, top_recess, front_recess) {
  difference() {
    render() chamfered_box(width, width, width, chamfer=chamfer_frac*width);
    union() {
      if (len(str(top_digit)) > 0) {
	translate([0, 0, -0.5*digit_d*width+eps+width/2])
	  render() w(s=str(top_digit), ht=digit_frac*width, th=digit_d*width, inv=top_recess);
	translate([0, 0, -(-0.5*digit_d*width+eps+width/2)]) rotate([180, 0, 0])
	  render() w(s=str(top_digit), ht=digit_frac*width, th=digit_d*width, inv=top_recess);
      }
      if (len(str(front_digit)) > 0) {
	translate([0, 0.5*digit_d*width-eps-width/2, 0]) rotate([0, dgts_asc*180, 0]) rotate([90, 0, 0])
	  render() w(s=str(front_digit), ht=digit_frac*width, th=digit_d*width, inv=front_recess);
	translate([0, -(0.5*digit_d*width-eps-width/2), 0]) rotate([0, dgts_asc*180, 0]) rotate([-90, 0, 0])
	  render() w(s=str(front_digit), ht=digit_frac*width, th=digit_d*width, inv=front_recess);
      }
    }
  }
}

module w (s, ht, th, inv) {
  if (inv==0) {
    write(s, center=true, h=ht, th=t);
  }
  else {
    difference() {
      cube([(block_width*(1-2*chamfer_frac)+ht)/2,(block_width*(1-2*chamfer_frac)+ht)/2,th],center=true);
      write(s, center=true, h=ht, th=t+eps);
    }
  }
}

module chamfered_box (width, length, height, chamfer=1) {
  difference() {
    cube([width, length, height], center=true);
    for (i=[-1,1], j=[-1,1]) {
      translate([i*(width/2-chamfer/2), 0, j*(height/2-chamfer/2)])
	rotate([0, -90+atan2(i, j), 0]) translate([max(max(length,height),width)/2, 0, 0])
	cube(max(max(length,height),width), center=true);
      translate([i*(width/2-chamfer/2), j*(length/2-chamfer/2), 0])
	rotate([0,  0, 90-atan2(i,j)]) translate([max(max(length,height),width)/2, 0, 0])
	cube(max(max(length,height),width), center=true);
      translate([0, i*(length/2-chamfer/2), j*(height/2-chamfer/2)])
	rotate([90-atan2(i,j), 0,  0]) translate([0, max(max(length,height),width)/2, 0])
	cube(max(max(length,height),width), center=true);
    }
  }
}

```


[User]
I'd like to design a customizable hat with either mouse or rabbit ears, similar to a theme park hat. I want to be able to specify the inner diameter of the hat, and have the ear type be selectable with a dropdown menu. I'd also like to be able to adjust the resolution of the model for faster previews, and also for exporting higher quality STLs. It'd be nice if the design included some basic build plate display options - maybe a simple rectangle - but those don't have to be parametric.

I'm thinking the code should generate a base hat shape (a hemisphere, basically) and then add the ears on top. For the mouse ears, it'd be two simple cylinders; for rabbit ears, it'd be two ear-like shapes with a bit of a curve, created using `hull()` and `cylinder()` primitives. Finally, the design should subtract away a hemisphere with an optional box underneath to make the hollow hat interior.

I'd like the code to be organized into modules for each type of ear, as well as a main module that does the difference operation to create the final hat. I'd expect the code to use the standard OpenSCAD primitives and include a library for build plate visualization like the provided example uses `utils/build_plate.scad`. I'd also expect to include `write/Write.scad`, as that was in the example.

[Assistant]
Mouse_Ear_Hat_TNH.scad:
```
// Customizable Mouse Ear Hat v1.0
// by TheNewHobbyist 2014 (http://thenewhobbyist.com)
// http://www.thingiverse.com/thing:259613
//
// "Customizable Mouse Ear Hat" is licensed under a
// Creative Commons Attribution-NonCommercial 3.0 Unported License.
//
// Description:
// I took my my favorite theme park related hat and made it customizable.
//
// Usage:
// Using Makerbot Customizer (or editing this OpenSCAD file directly) you
// enter a desired hat diameter and select a "Mouse" or "Rabbit" version
// of the hat.
//

/* [Hat Diameter] */

//Enter the inner diameter of your hat in mm:
Hat_Diameter = 30; // [5:140]

//Mouse or Rabbit ears?
Ears = "mouse"; // [mouse:Mouse, rabbit:Rabbit]

//Pick hat resolution (increases export time)
Resolution = 120; // [12:8-bit,60:Low,120:Medium,240:High]

/* [Build Plate] */

//for display only, doesn't contribute to final object
build_plate_selector = 0; //[0:Replicator 2,1: Replicator,2:Thingomatic,3:Manual]

//when Build Plate Selector is set to "manual" this controls the build plate x dimension
build_plate_manual_x = 100; //[100:400]

//when Build Plate Selector is set to "manual" this controls the build plate y dimension
build_plate_manual_y = 100; //[100:400]

build_plate(build_plate_selector,build_plate_manual_x,build_plate_manual_y);

/* [Hidden] */

$fn=Resolution;
// preview[view:south, tilt:top diagonal]

// Libraries
use <utils/build_plate.scad>
use <write/Write.scad>

// The most magical OpenSCAD on earth.

module solid_mouse(){
	sphere(r=(Hat_Diameter/2)*1.1);
	translate([0,Hat_Diameter/2*.8,Hat_Diameter/2]) rotate([0,90,0]) cylinder(r=Hat_Diameter/2*.6, h=Hat_Diameter/2*.1, center=true);
	translate([0,-Hat_Diameter/2*.8,Hat_Diameter/2]) rotate([0,90,0]) cylinder(r=Hat_Diameter/2*.6, h=Hat_Diameter/2*.1, center=true);
}

module solid_rabbit(){
	sphere(r=(Hat_Diameter/2)*1.1);
	translate([0,Hat_Diameter/3*.8,Hat_Diameter/2]) {
		rotate([0,90,0]) {
			hull(){
				translate([-Hat_Diameter/1.5,Hat_Diameter/5,0]) cylinder(r=Hat_Diameter/3*.6, h=Hat_Diameter/2*.1, center=true);
				cylinder(r=Hat_Diameter/4*.6, h=Hat_Diameter/2*.1, center=true);
			}
		}
	}

	translate([0,-Hat_Diameter/3*.8,Hat_Diameter/2]) {
		rotate([0,90,0]) {
			hull(){
				translate([-Hat_Diameter/1.5,-Hat_Diameter/5,0]) cylinder(r=Hat_Diameter/3*.6, h=Hat_Diameter/2*.1, center=true);
				cylinder(r=Hat_Diameter/4*.6, h=Hat_Diameter/2*.1, center=true);
			}
		}
	}
}

if (Ears == "mouse") {
	rotate([0,0,90]){
		difference(){
			solid_mouse();
			sphere(r=Hat_Diameter/2);
			translate([0,0,-Hat_Diameter/2]) cube([Hat_Diameter/2*3, Hat_Diameter/2*3, Hat_Diameter/2*2], center=true);
		}
	}
}

if (Ears == "rabbit") {
	rotate([0,0,90]){
		difference(){
			solid_rabbit();
			sphere(r=Hat_Diameter/2);
			translate([0,0,-Hat_Diameter/2]) cube([Hat_Diameter/2*3, Hat_Diameter/2*3, Hat_Diameter/2*2], center=true);
		}
	}
}

```


[User]
I'd like to design a reloading tray, but I'm not very familiar with OpenSCAD, so I need some help. I want it to be parametric so I can easily adjust it for different calibers and different sized trays.

Essentially, I need a grid of cylindrical holes in a base. I've got a general idea, but I don't know how to make it very customizable. The user-adjustable parameters I need are:

*   `number_of_columns`: The number of columns of holes in the tray.
*   `number_of_rows`: The number of rows of holes in the tray.
*   `diameter`: The diameter of each hole, which will depend on the caliber of ammunition being used.
*   `padding`: The distance between each hole.
*   `height`: The depth of each hole.

I need the base to be solid, and the holes to be, well, holes - so I'd need to use difference to subtract the interior cylinder from the exterior cylinder. Also, the base thickness should also be customizable as a non-customizer variable, let's call it `floor_height`, with a default value of 3 mm.

Could you please generate an OpenSCAD file (or files, if you think it's cleaner) that lets me adjust these variables in the customizer, and produces the desired reloading tray? I don't need to specify the dimensions, just make it work, and I can change the number of columns, number of rows, hole diameter, padding, and hole height.

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

//	The number of columns in the tray.
number_of_columns = 10;	//	[1:20]

//	The number of rows in the tray.
number_of_rows = 5;	//	[1:20]

//  The diameter of each tray hole in mm.
diameter = 10.2;

//  The distance between each hole in mm.
padding = 2;  //  [1:20]

//  The height of each hole in mm.
height = 10;  //  [1:20]

//NON CUSTOMIZER VARIABLES

//  Height of the base in mm.
floor_height = 3 * 1;

for ( r = [1 : number_of_rows], c = [1 : number_of_columns] ) {
	translate([c * (diameter + padding), r * (diameter + padding), 0]) {
		difference() {
			cylinder (h = height + floor_height, r=padding + diameter / 2, center = false);
			translate([0,0,floor_height]) cylinder (h = height + 1, r=diameter / 2, center = false);
		}
	}
}
```


[User]
Hey there! I'm looking to generate a bunch of flexible, modular parts for a construction kit, and I think OpenSCAD is the way to go. I'm basing this on the "Flexy-Frame v4" design but want to make it much more flexible.

I want to be able to create both male and female connectors, as in the original design, and ideally be able to control all aspects of the design through parameters. I want to be able to adjust things like:

*   The number of lobes (the 'arms' extending from the center) for both male and female connectors.
*   The diameter of the central connection point for both male and female.
*   The pitch circle diameter - the radius of the circle where the connection points are centered.
*   The height of the limb or 'arm'.
*   The thickness of the limb.
*   The height of the optional center web plate on both male and female connectors.

Also, I'd like to introduce some additional flexibility to the female connector:

*   Adjustable clearance between the male connector and the female receptacle (I'm thinking a simple offset for each of the elements that make up the receptacle).
*   An option to adjust the depth of the 'hole' in the female connector where the male connector is going to sit. I want to set both the depth of the cylinder and the depth of the 'prongs' or 'teeth'.

Finally, is it possible to design these so that they can be used as 'snap fit' connectors? I'm thinking about having a little 'nub' or small wedge that slightly compresses the female connector and then pops into place. Is that something you can handle?

I’m hoping for at least two separate .scad files, one for the male connector and one for the female connector, that use the same shared variables for easy modification and reuse. I'm not using any external libraries at the moment. Thanks in advance!

[Assistant]
Flexy-Frame_v4.scad:
```
// Flexy-Frame v4 by Gyrobot
// http://www.gyrobot.co.uk
//
//Standard Males were generated with the following params :
//
//    type = "male"
//    diameter_of_connection = 4
//    pitch_circle_diameter = 15
//    limb_height = 2
//    limb_thickness = 2
//
//Standard Females were generated with the following params :
//
//    type = "female"
//    diameter_of_connection = 4
//    pitch_circle_diameter = 40
//    limb_height = 2
//    limb_thickness = 3
//
// preview[view:east, tilt:top]

type = "male" ; // [male,female]
number_of_lobes = 3 ;// [2:100]
web_plate_height = 0;
diameter_of_connection = 4 ;
pitch_circle_diameter = 15 ;
male_limb_height = 2 ; // 1mm is automatically added to this for Female limb height
limb_thickness = 2 ;

// Start of Code

n=number_of_lobes ;
ph=web_plate_height ;
d=diameter_of_connection ;
pcd=pitch_circle_diameter ;
h=male_limb_height ;
t=limb_thickness ;
a=360/n ;

if (type == "male")
	male();

if (type == "female")
	female();

$fn=32*1 ;

module male ()
{
	if (ph > 0)
		assign ($fn=n)
		cylinder (h=ph, r=pcd/2-d) ;

	for (ia = [0:a:360])
	{
		rotate (ia,[0,0,1])
		{
			translate ([0,-t/2,0])
			cube ([pcd/2,t,h]) ;
			translate ([pcd/2,0,0])
			cylinder (h=h, r=d/2) ;

		}
	}
}

module female ()
{
	difference ()
	{
		union ()
		{
			if (ph > 0)
				assign ($fn=n)
				cylinder (h=ph, r=pcd/2+d) ;

			for (ia = [0:a:360])
			{
				rotate (ia,[0,0,1])
				{
					translate ([0,-t/2,0])
						cube ([pcd/2,t,h+1]) ;
					translate ([pcd/2,0,0])
						cylinder (h=h+1, r=d) ;
					linear_extrude (height = h+1, convexity= 3)
						polygon (points=[[pcd/2-d*1.5,t/-2],[pcd/2-d*1.5,t/2],[pcd/2,d],[pcd/2,-d]]);
				}
			}
		}
		for (ia = [0:a:360])
		{
			rotate (ia,[0,0,1])
			{
				translate ([pcd/2,0,1])
					{
						cylinder (h=ph+2, r=d/2) ;
						translate ([0,-d/4,0])
						cube ([pcd/2,d/2,ph+2]) ;
					}
			}
		}
	}
}
```


[User]
Hey there! I'm looking to get a custom cheese mold design made in OpenSCAD, something I can tweak and then 3D print. I've got some rough ideas, and I'd like it to be parametric so I can adjust it for different sizes of cheese.

Essentially, I need a cylindrical mold with a few features:

1.  **Main Body:** A cylinder that forms the basic shape of the mold. I need to be able to control the overall radius and height of this cylinder. Let's call these `MoldRadius` and `MoldHeight`.
2.  **Inner Cylinder:** Inside the main cylinder, there's going to be an inner cylinder, creating the actual space where the cheese goes. This inner cylinder will have a radius that's a set distance less than the outer cylinder radius, so the wall thickness is fixed. How about a `WallThickness` variable, so that  `Wall = MoldRadius - WallThickness` will give you the inner cylinder's radius.
3.  **Bottom Holes:** I need some drainage holes on the bottom of the mold. These will be arranged in a circle around the center of the base. I need a way to control the radius of these holes (`HoleRadius`) and the number of holes (`HoleCount`). I'd also want them to be offset from the center by `HoleOffsetFromCenter`. And also, they should only go a bit into the mold, so `HoleDepth`.
4.  **Side Holes:** I'll also need some holes along the sides for drainage. These will be in rows going around the mold. So a number of horizontal rings of holes evenly spaced vertically. Like the bottom holes, I would like to control their radius with `HoleRadius`, and also the number of holes in each row, and the number of rows, `HoleCount` and `HoleRow` respectively. They should go through the whole wall so `HoleLength` is the diameter plus some buffer. The vertical placement of the side holes should be spaced evenly between `HoleRow`,  with the lowest row of holes starting some distance up from the bottom `HoleOffsetFromBottom`.

I'm thinking we'd probably want to use loops for the holes to make it easier to adjust the number of holes later. And I think these parameters would make it a really flexible design. The `HoleRadius` will be used for both the side holes and bottom holes, to keep the design uniform.

I'm envisioning this as a single OpenSCAD file, but if you think breaking it into smaller files makes more sense, I am open to that. I don't want to rely on any external libraries here though, just what's native to OpenSCAD.

[Assistant]
CheeseMold.scad:
```
//Variable Description

MoldRadius=50; // Possible Values
MoldHeight=100; // Possible Values
HoleR=1.5; // Possible Values
Wall=(MoldRadius-3);

difference() {
	cylinder(r=MoldRadius, h=MoldHeight, $fn=100);
		translate([0, 0, 10])
		cylinder(r=Wall, h=MoldHeight, $fn=100);

//Bottom Holes
		for ( i = [0 : 5] )
			{
    				rotate( i * 360 / 6, [0, 0, 1])
    				translate([0, MoldRadius/2, 0])
    				cylinder(r = HoleR, h=10);
			}
// Side Holes

for ( z = [0 : 2] )

	{
		for ( i = [0 : 5] )
			{
    				rotate( i * 360 / 6, [0, 0, 1])
    				translate([0, 0, MoldHeight/4 * (z+1)])
				rotate([0,90,0])
    				cylinder(r = HoleR, h=MoldRadius+10);
			}

		}
 	}

```