[User]
I'm looking to create a customizable low-poly ring, similar to the design by VastaAesthetics on Thingiverse. I need an OpenSCAD file (or a set of files) that allows me to easily adjust the inner diameter of the ring and its thickness. I'm not too familiar with working with the raw `polyhedron` object, so I would like to be able to customize the ring using a few parameters instead of working with the vertices directly.

Essentially, I'd like to input:

*   `int_dia`: The interior diameter of the ring in millimeters.
*   `thickness`: The overall height/thickness of the ring in millimeters.

The design should maintain the low-poly aesthetic from the linked design. I would expect it to generate a ring shape with the correct interior diameter and desired thickness, based on my inputs. It should have a consistent thickness, with an exterior that mirrors the low-poly faces defined in the polyhedron object I linked.

Also, I want to be able to export this as an .stl file for 3D printing, so if there's anything I need to make sure is set in the code, please let me know.

[Assistant]
ring.scad:
```
// Thingiverse Customizer parameters
// Interior diameter of the ring (mm)
int_dia = 20; // Default: 20 mm (actual interior diameter)
// Height or thickness of the ring (mm)
thickness = 5; // Default: 5 mm

// Module for low-poly ring
module low_poly_ring(int_dia, thickness) {
    // Calculate inner radius and outer radius
    inner_radius = int_dia / 2;
    outer_radius = inner_radius + 2; // Add fixed material thickness (adjust as needed)

    // Resize the polyhedron to maintain XY dimensions but adjust height (thickness)
    resize([(outer_radius - inner_radius) * 2 + int_dia, (outer_radius - inner_radius) * 2 + int_dia, thickness])
        object1(1); // Force scale to 1
}
// Polyhedron definition
module object1(scale) {
    polyhedron(
        points=[[-11.9075174332,-5.79961967468,6.72192525864],[-12.5295953751,-3.48272132874,2.91208291054],[-9.579205513,-9.29737663269,4.04917764664],
[-11.9075174332,-5.79961967468,6.72192525864],[-10.8333320618,1.32665720094e-015,9.62962913513],[-12.5295953751,-3.48272132874,2.91208291054],
[-11.9075174332,-5.79961967468,6.72192525864],[-9.579205513,-9.29737663269,4.04917764664],[-8.76437091827,-6.36764287949,9.62962913513],
[1.49685604356e-007,-10.3030719757,-2.444323286e-007],[0.594219148159,-13.7321891785,4.28156328201],[-5.45787525177,-11.1737852097,1.47061061859],
[6.8840379715,-11.2789182663,7.2499423027],[0.594219148159,-13.7321891785,4.28156328201],[6.05608940125,-8.33535766602,-2.444323286e-007],
[8.76437282562,-6.36764287949,-2.444323286e-007],[12.4219942093,-5.7519197464,4.62885904312],[6.05608940125,-8.33535766602,-2.444323286e-007],
[6.8840379715,-11.2789182663,7.2499423027],[12.4219942093,-5.7519197464,4.62885904312],[8.76437282562,-6.36764287949,9.62962913513],
[13.0197582245,2.03293323517,3.23701930046],[12.4219942093,-5.7519197464,4.62885904312],[10.8333320618,-2.65331313134e-015,1.71696385109e-007],
[8.76437282562,-6.36764287949,9.62962913513],[12.4219942093,-5.7519197464,4.62885904312],[9.79885101318,-3.18382143974,9.62962913513],
[8.76437091827,6.36764287949,-2.444323286e-007],[11.9628639221,5.78017044067,6.56177568436],[13.0197582245,2.03293323517,3.23701930046],
[13.0197582245,2.03293323517,3.23701930046],[11.9628639221,5.78017044067,6.56177568436],[10.8333320618,-2.65331313134e-015,9.62962913513],
[11.9628639221,5.78017044067,6.56177568436],[9.46583843231,9.4501247406,4.14128780365],[8.76437091827,6.36764287949,9.62962913513],
[-1.49685604356e-007,10.3030719757,-2.444323286e-007],[-0.446799516678,13.7756910324,4.29434156418],[5.43897104263,11.1707706451,1.46551728249],
[-5.59535074234,11.8582029343,7.05399227142],[-0.446799516678,13.7756910324,4.29434156418],[-5.90452384949,10.8422880173,1.25438392162],
[-5.59535074234,11.8582029343,7.05399227142],[-5.90452384949,10.8422880173,1.25438392162],[-10.915312767,7.67030715942,6.2608628273],
[-13.4702425003,1.83915817738,4.83936691284],[-10.8333320618,1.32665720094e-015,1.71696385109e-007],[-12.5295953751,-3.48272132874,2.91208291054],
[-8.76437091827,-6.36764287949,-2.444323286e-007],[-9.579205513,-9.29737663269,4.04917764664],[-12.5295953751,-3.48272132874,2.91208291054],
[-8.76437091827,-6.36764287949,-2.444323286e-007],[-5.45787525177,-11.1737852097,1.47061061859],[-9.579205513,-9.29737663269,4.04917764664],
[-6.27605819702,-11.6207084656,7.23004722595],[-5.45787525177,-11.1737852097,1.47061061859],[0.594219148159,-13.7321891785,4.28156328201],
[6.05608940125,-8.33535766602,-2.444323286e-007],[0.594219148159,-13.7321891785,4.28156328201],[3.34780550003,-10.3030719757,-2.444323286e-007],
[6.8840379715,-11.2789182663,7.2499423027],[6.05608940125,-8.33535766602,-2.444323286e-007],[12.4219942093,-5.7519197464,4.62885904312],
[10.8333320618,-2.65331313134e-015,1.71696385109e-007],[12.4219942093,-5.7519197464,4.62885904312],[9.79885101318,-3.18382143974,1.71696385109e-007],
[-9.79885101318,3.18382143974,1.71696385109e-007],[-10.8333320618,1.32665720094e-015,1.71696385109e-007],[-13.4702425003,1.83915817738,4.83936691284],
[8.76437091827,6.36764287949,-2.444323286e-007],[5.43897104263,11.1707706451,1.46551728249],[9.46583843231,9.4501247406,4.14128780365],
[6.16993331909,11.6586313248,7.19973564148],[5.43897104263,11.1707706451,1.46551728249],[-0.446799516678,13.7756910324,4.29434156418],
[-1.49685604356e-007,10.3030719757,-2.444323286e-007],[-5.90452384949,10.8422880173,1.25438392162],[-0.446799516678,13.7756910324,4.29434156418],
[-8.76437282562,6.36764287949,-2.444323286e-007],[-9.79885101318,3.18382143974,1.71696385109e-007],[-10.915312767,7.67030715942,6.2608628273],
[-9.79885101318,3.18382143974,1.71696385109e-007],[-13.4702425003,1.83915817738,4.83936691284],[-10.915312767,7.67030715942,6.2608628273],
[8.76437091827,6.36764287949,-2.444323286e-007],[9.46583843231,9.4501247406,4.14128780365],[11.9628639221,5.78017044067,6.56177568436],
[-5.90452384949,10.8422880173,1.25438392162],[-6.05608940125,8.33535766602,-2.444323286e-007],[-8.76437282562,6.36764287949,-2.444323286e-007],
[-3.34780550003,10.3030719757,-2.444323286e-007],[-6.05608940125,8.33535766602,-2.444323286e-007],[-5.90452384949,10.8422880173,1.25438392162],
[-5.90452384949,10.8422880173,1.25438392162],[-1.49685604356e-007,10.3030719757,-2.444323286e-007],[-3.34780550003,10.3030719757,-2.444323286e-007],
[-10.8333320618,1.32665720094e-015,1.71696385109e-007],[-9.79885101318,-3.18382143974,1.71696385109e-007],[-12.5295953751,-3.48272132874,2.91208291054],
[-6.27605819702,-11.6207084656,7.23004722595],[-9.579205513,-9.29737663269,4.04917764664],[-5.45787525177,-11.1737852097,1.47061061859],
[5.43897104263,11.1707706451,1.46551728249],[3.34780550003,10.3030719757,-2.444323286e-007],[-1.49685604356e-007,10.3030719757,-2.444323286e-007],
[6.05608797073,8.33535766602,-2.444323286e-007],[3.34780550003,10.3030719757,-2.444323286e-007],[5.43897104263,11.1707706451,1.46551728249],
[5.43897104263,11.1707706451,1.46551728249],[8.76437091827,6.36764287949,-2.444323286e-007],[6.05608797073,8.33535766602,-2.444323286e-007],
[8.76437091827,6.36764287949,-2.444323286e-007],[13.0197582245,2.03293323517,3.23701930046],[9.79885101318,3.18382143974,1.71696385109e-007],
[10.8333320618,-2.65331313134e-015,1.71696385109e-007],[9.79885101318,3.18382143974,1.71696385109e-007],[13.0197582245,2.03293323517,3.23701930046],
[-13.4702425003,1.83915817738,4.83936691284],[-12.5295953751,-3.48272132874,2.91208291054],[-10.8333320618,1.32665720094e-015,9.62962913513],
[-8.76437091827,-6.36764287949,-2.444323286e-007],[-12.5295953751,-3.48272132874,2.91208291054],[-9.79885101318,-3.18382143974,1.71696385109e-007],
[8.76437282562,-6.36764287949,-2.444323286e-007],[9.79885101318,-3.18382143974,1.71696385109e-007],[12.4219942093,-5.7519197464,4.62885904312],
[1.49685604356e-007,-10.3030719757,-2.444323286e-007],[3.34780550003,-10.3030719757,-2.444323286e-007],[0.594219148159,-13.7321891785,4.28156328201],
[-5.45787525177,-11.1737852097,1.47061061859],[-3.34780550003,-10.3030719757,-2.444323286e-007],[1.49685604356e-007,-10.3030719757,-2.444323286e-007],
[-6.05608797073,-8.33535766602,-2.444323286e-007],[-3.34780550003,-10.3030719757,-2.444323286e-007],[-5.45787525177,-11.1737852097,1.47061061859],
[-5.45787525177,-11.1737852097,1.47061061859],[-8.76437091827,-6.36764287949,-2.444323286e-007],[-6.05608797073,-8.33535766602,-2.444323286e-007],
[-10.915312767,7.67030715942,6.2608628273],[-13.4702425003,1.83915817738,4.83936691284],[-9.79885101318,3.18382143974,9.62962913513],
[-8.76437282562,6.36764287949,-2.444323286e-007],[-10.915312767,7.67030715942,6.2608628273],[-5.90452384949,10.8422880173,1.25438392162],
[-10.915312767,7.67030715942,6.2608628273],[-8.76437282562,6.36764287949,9.62962913513],[-6.05608940125,8.33535766602,9.62962913513],
[-5.59535074234,11.8582029343,7.05399227142],[-1.49685604356e-007,10.3030719757,9.62962913513],[-0.446799516678,13.7756910324,4.29434156418],
[-0.446799516678,13.7756910324,4.29434156418],[-1.49685604356e-007,10.3030719757,9.62962913513],[6.16993331909,11.6586313248,7.19973564148],
[13.0197582245,2.03293323517,3.23701930046],[10.8333320618,-2.65331313134e-015,9.62962913513],[12.4219942093,-5.7519197464,4.62885904312],
[6.8840379715,-11.2789182663,7.2499423027],[1.49685604356e-007,-10.3030719757,9.62962913513],[0.594219148159,-13.7321891785,4.28156328201],
[0.594219148159,-13.7321891785,4.28156328201],[1.49685604356e-007,-10.3030719757,9.62962913513],[-6.27605819702,-11.6207084656,7.23004722595],
[6.16993331909,11.6586313248,7.19973564148],[9.46583843231,9.4501247406,4.14128780365],[5.43897104263,11.1707706451,1.46551728249],
[-9.79885101318,3.18382143974,9.62962913513],[-8.76437282562,6.36764287949,9.62962913513],[-10.915312767,7.67030715942,6.2608628273],
[-10.8333320618,1.32665720094e-015,9.62962913513],[-9.79885101318,3.18382143974,9.62962913513],[-13.4702425003,1.83915817738,4.83936691284],
[-11.9075174332,-5.79961967468,6.72192525864],[-9.79885101318,-3.18382143974,9.62962913513],[-10.8333320618,1.32665720094e-015,9.62962913513],
[-8.76437091827,-6.36764287949,9.62962913513],[-9.79885101318,-3.18382143974,9.62962913513],[-11.9075174332,-5.79961967468,6.72192525864],
[-6.27605819702,-11.6207084656,7.23004722595],[-8.76437091827,-6.36764287949,9.62962913513],[-9.579205513,-9.29737663269,4.04917764664],
[-6.27605819702,-11.6207084656,7.23004722595],[-6.05608797073,-8.33535766602,9.62962913513],[-8.76437091827,-6.36764287949,9.62962913513],
[-3.34780550003,-10.3030719757,9.62962913513],[-6.05608797073,-8.33535766602,9.62962913513],[-6.27605819702,-11.6207084656,7.23004722595],
[-6.27605819702,-11.6207084656,7.23004722595],[1.49685604356e-007,-10.3030719757,9.62962913513],[-3.34780550003,-10.3030719757,9.62962913513],
[6.8840379715,-11.2789182663,7.2499423027],[3.34780550003,-10.3030719757,9.62962913513],[1.49685604356e-007,-10.3030719757,9.62962913513],
[6.05608940125,-8.33535766602,9.62962913513],[3.34780550003,-10.3030719757,9.62962913513],[6.8840379715,-11.2789182663,7.2499423027],
[6.8840379715,-11.2789182663,7.2499423027],[8.76437282562,-6.36764287949,9.62962913513],[6.05608940125,-8.33535766602,9.62962913513],
[10.8333320618,-2.65331313134e-015,9.62962913513],[9.79885101318,-3.18382143974,9.62962913513],[12.4219942093,-5.7519197464,4.62885904312],
[11.9628639221,5.78017044067,6.56177568436],[9.79885101318,3.18382143974,9.62962913513],[10.8333320618,-2.65331313134e-015,9.62962913513],
[8.76437091827,6.36764287949,9.62962913513],[9.79885101318,3.18382143974,9.62962913513],[11.9628639221,5.78017044067,6.56177568436],
[6.16993331909,11.6586313248,7.19973564148],[8.76437091827,6.36764287949,9.62962913513],[9.46583843231,9.4501247406,4.14128780365],
[6.16993331909,11.6586313248,7.19973564148],[6.05608797073,8.33535766602,9.62962913513],[8.76437091827,6.36764287949,9.62962913513],
[3.34780550003,10.3030719757,9.62962913513],[6.05608797073,8.33535766602,9.62962913513],[6.16993331909,11.6586313248,7.19973564148],
[6.16993331909,11.6586313248,7.19973564148],[-1.49685604356e-007,10.3030719757,9.62962913513],[3.34780550003,10.3030719757,9.62962913513],
[-5.59535074234,11.8582029343,7.05399227142],[-3.34780550003,10.3030719757,9.62962913513],[-1.49685604356e-007,10.3030719757,9.62962913513],
[-6.05608940125,8.33535766602,9.62962913513],[-3.34780550003,10.3030719757,9.62962913513],[-5.59535074234,11.8582029343,7.05399227142],
[-5.59535074234,11.8582029343,7.05399227142],[-10.915312767,7.67030715942,6.2608628273],[-6.05608940125,8.33535766602,9.62962913513],
[10.8333320618,-2.65331313134e-015,1.71696385109e-007],[8.76437282562,-6.36764287949,-2.444323286e-007],[10.8333320618,-2.65331313134e-015,9.62962913513],
[10.8333320618,-2.65331313134e-015,9.62962913513],[8.76437091827,6.36764287949,9.62962913513],[10.8333320618,-2.65331313134e-015,1.71696385109e-007],
[8.76437091827,6.36764287949,-2.444323286e-007],[10.8333320618,-2.65331313134e-015,1.71696385109e-007],[8.76437091827,6.36764287949,9.62962913513],
[8.76437091827,6.36764287949,9.62962913513],[3.34780550003,10.3030719757,9.62962913513],[8.76437091827,6.36764287949,-2.444323286e-007],
[3.34780550003,10.3030719757,-2.444323286e-007],[8.76437091827,6.36764287949,-2.444323286e-007],[3.34780550003,10.3030719757,9.62962913513],
[3.34780550003,10.3030719757,9.62962913513],[-3.34780550003,10.3030719757,9.62962913513],[3.34780550003,10.3030719757,-2.444323286e-007],
[-3.34780550003,10.3030719757,-2.444323286e-007],[3.34780550003,10.3030719757,-2.444323286e-007],[-3.34780550003,10.3030719757,9.62962913513],
[-3.34780550003,10.3030719757,9.62962913513],[-8.76437282562,6.36764287949,9.62962913513],[-3.34780550003,10.3030719757,-2.444323286e-007],
[-8.76437282562,6.36764287949,-2.444323286e-007],[-3.34780550003,10.3030719757,-2.444323286e-007],[-8.76437282562,6.36764287949,9.62962913513],
[-8.76437282562,6.36764287949,9.62962913513],[-10.8333320618,1.32665720094e-015,9.62962913513],[-8.76437282562,6.36764287949,-2.444323286e-007],
[-10.8333320618,1.32665720094e-015,1.71696385109e-007],[-8.76437282562,6.36764287949,-2.444323286e-007],[-10.8333320618,1.32665720094e-015,9.62962913513],
[-10.8333320618,1.32665720094e-015,9.62962913513],[-8.76437091827,-6.36764287949,9.62962913513],[-10.8333320618,1.32665720094e-015,1.71696385109e-007],
[-8.76437091827,-6.36764287949,-2.444323286e-007],[-10.8333320618,1.32665720094e-015,1.71696385109e-007],[-8.76437091827,-6.36764287949,9.62962913513],
[-8.76437091827,-6.36764287949,9.62962913513],[-3.34780550003,-10.3030719757,9.62962913513],[-8.76437091827,-6.36764287949,-2.444323286e-007],
[-3.34780550003,-10.3030719757,-2.444323286e-007],[-8.76437091827,-6.36764287949,-2.444323286e-007],[-3.34780550003,-10.3030719757,9.62962913513],
[-3.34780550003,-10.3030719757,9.62962913513],[3.34780550003,-10.3030719757,9.62962913513],[-3.34780550003,-10.3030719757,-2.444323286e-007],
[3.34780550003,-10.3030719757,-2.444323286e-007],[-3.34780550003,-10.3030719757,-2.444323286e-007],[3.34780550003,-10.3030719757,9.62962913513],
[3.34780550003,-10.3030719757,9.62962913513],[8.76437282562,-6.36764287949,9.62962913513],[3.34780550003,-10.3030719757,-2.444323286e-007],
[8.76437282562,-6.36764287949,-2.444323286e-007],[3.34780550003,-10.3030719757,-2.444323286e-007],[8.76437282562,-6.36764287949,9.62962913513],
[8.76437282562,-6.36764287949,9.62962913513],[10.8333320618,-2.65331313134e-015,9.62962913513],[8.76437282562,-6.36764287949,-2.444323286e-007] ],
faces=[[0,1,2],[3,4,5],[6,7,8],
[9,10,11],[12,13,14],[15,16,17],
[18,19,20],[21,22,23],[24,25,26],
[27,28,29],[30,31,32],[33,34,35],
[36,37,38],[39,40,41],[42,43,44],
[45,46,47],[48,49,50],[51,52,53],
[54,55,56],[57,58,59],[60,61,62],
[63,64,65],[66,67,68],[69,70,71],
[72,73,74],[75,76,77],[78,79,80],
[81,82,83],[84,85,86],[87,88,89],
[90,91,92],[93,94,95],[96,97,98],
[99,100,101],[102,103,104],[105,106,107],
[108,109,110],[111,112,113],[114,115,116],
[117,118,119],[120,121,122],[123,124,125],
[126,127,128],[129,130,131],[132,133,134],
[135,136,137],[138,139,140],[141,142,143],
[144,145,146],[147,148,149],[150,151,152],
[153,154,155],[156,157,158],[159,160,161],
[162,163,164],[165,166,167],[168,169,170],
[171,172,173],[174,175,176],[177,178,179],
[180,181,182],[183,184,185],[186,187,188],
[189,190,191],[192,193,194],[195,196,197],
[198,199,200],[201,202,203],[204,205,206],
[207,208,209],[210,211,212],[213,214,215],
[216,217,218],[219,220,221],[222,223,224],
[225,226,227],[228,229,230],[231,232,233],
[234,235,236],[237,238,239],[240,241,242],
[243,244,245],[246,247,248],[249,250,251],
[252,253,254],[255,256,257],[258,259,260],
[261,262,263],[264,265,266],[267,268,269],
[270,271,272],[273,274,275],[276,277,278],
[279,280,281],[282,283,284],[285,286,287]]);}

// Function to get object bounds (Optional for debugging)
function object1Min() = [-13.470, -13.732, -0.000];
function object1Max() = [13.020, 13.776, 9.630];

// Main script to render the customizable ring
low_poly_ring(int_dia, thickness);
```


[User]
Hey there, I'm looking to create a customizable base for a modular organizer system, and I think OpenSCAD is the way to go. I really like the design shown in the `Customizable_DMO_MegaBase.scad` file I found, but I need more flexibility and features. I'll explain all the requirements.

Firstly, I want to be able to adjust the overall length, width, and height of the base, just like in the example, and also the wall thickness. So, that's four parameters: `length`, `width`, `height`, and `wallThickness`. All in millimeters.

Next, I need to have optional notepad finger notches. I'd like to be able to specify whether each notch is present, and their position along the length of the base. The example file has 3 notepad notches, but I'd like to have the option to include anywhere between 0 and a variable max number of notches, `maxNotepadNotches` (e.g., 5 or 10). I'll need a boolean variable to enable or disable each notch (like the `notePad1`, `notePad2`, `notePad3` in the example), and a variable to specify the position of each notch. I would like to specify this position relative to the start of the base (like the `notePad1Position`, `notePad2Position`, etc in the example).

The notch geometry can stay exactly as it is in the example (trapezoid shape), which I've included the point coordinates for in the code.

Finally, I want a module that generates this base by using the provided parameters. It should automatically create the hollow base with the wall thickness provided, and then the notepad notches where specified.

Can you generate an OpenSCAD file that handles all this? The modular organization system uses a 38.5mm grid (with a small tolerance) and this base will be part of it, so it's good if the measurements stay in mm. Let me know if I can provide more info!

[Assistant]
Customizable_DMO_MegaBase.scad:
```
//Customizable DMO MegaBase (mm)

/* [Base Parameters (mm)] */
//
length = 234.2;     // Default base length
width = 80.2;       // Default base width
height = 9.6;      // Default base height
wallThickness = 1.6; // Default wall thickness

/* [Optional NotePad1] */
//
notePad1 = true; // Check to add notepad finger notch
notePad1Position = 0.0;     // Default position of first notepad

/* [Optional NotePad2] */
//
notePad2 = true; // Check to add notepad finger notch
notePad2Position = 77.0;     // Default position of second notepad

/* [Optional NotePad3] */
//
notePad3 = false; // Check to add notepad finger notch
notePad3Position = 154.0;     // Default position of third notepad

// Function to create base
module createBase() {
    // Define the points for the trapezoid polygon finger notch
    points = [
        [0, 0],
        [50.4, 0],
        [42.067 + 4.167, height - wallThickness],
        [(4.167), height - wallThickness]
    ];

    difference() {
    // Outer box of base
        cube([length, width, height], center=false);

    // Inner box to hollow out base walls
        translate([wallThickness, wallThickness, wallThickness])
        cube([length - 2 * wallThickness, width - 2 * wallThickness, height], center=false);

    // Linear_extrude to remove notepad finger notches
    if (notePad1) {
       rotate([-90, 0, 0])
       translate([(notePad1Position + 13.3 + wallThickness), -height, -wallThickness])
       linear_extrude(height = 3 * wallThickness)
        polygon(points);
    }

    if (notePad2) {
       rotate([-90, 0, 0])
       translate([(notePad2Position + 13.3 + wallThickness), -height, -wallThickness])
       linear_extrude(height = 3 * wallThickness)
        polygon(points);
    }

    if (notePad3) {
       rotate([-90, 0, 0])
       translate([(notePad3Position + 13.3 + wallThickness), -height, -wallThickness])
       linear_extrude(height = 3 * wallThickness)
        polygon(points);
    }
    }
}

// Call function to create base
createBase();

```


[User]
I'm looking to create a customizable Y-connector for flexible tubing, and I'd like to use OpenSCAD to make it. I need a parametric design where I can adjust a few key aspects:

*   **Wall Thickness:** This should be adjustable and should obviously be less than half of the outer diameter to make a real tube.
*   **Stops:** I'd like an option to include or exclude "stops" on the tubes - little circular ridges on the outside.
*   **Joint Angle:** The angle between the two upper tubes and the bottom tube should be adjustable.
*   **Outer Diameter:** The outer diameter of the tubes themselves should be customizable.
*   **Tube Length:** The base length of the tubes should be adjustable.
*   **Barb Length:** I need to be able to adjust the length of the "barbs" at the ends of the tubes, or to remove them.
*   **Extra Length:** It should be possible to add extra length to both the bottom and the upper tubes separately, relative to the center of the connector.

Also, to clarify, the "stops" are basically rings that sit a certain distance from the end of the tube, and they should automatically change in diameter based on the wall thickness (something like 1.5x wallThickness, but not less than 3) so they can properly grip the tubing. The barbs should also get wider than the main tube body, like you'd expect on a hose barb. If the stops are enabled, they should be at the mid-point of the tube not including the barb.

Could you generate a single OpenSCAD file that includes all of the logic for this, please? I don't need any external libraries.

[Assistant]
Simple_parametric_Y-connector.scad:
```
// How thicc you want the walls to be. Make sure ( wallThickness < ( outerDiamater / 2 ) ), because the model won't fix it for you.
wallThickness = 2; // [ 1 : 0.1 : 25 ]
// Want stops?
insertStop = "Yes"; // [ Yes, No ]
// The angle between the bottom and upper tubes.
jointAngle = 40; // [ 35 : 1 : 90 ]
// The outer diameter of the tubes.
outerDiameter = 20; // [ 4 : 0.1 : 50 ]
// The total length of the tubes, measured from the end of the tube.
tubeLength = 40; // [ 1 : 0.1 : 100 ]
// The length of the barb on the tubes. Make sure ( barbLength < tubeLength ), because the model won't fix it for you. If you don't need a barb, set this to 0.
barbLength = 18; // [ 0 : 0.1 : 100 ]
// Any extra length on the bottom tube. (This is added to the center.) If you don't need extra length, set this to 0.
bottomTubeExtraLength = 5; // [ 0 : 0.1 : 100 ]
// Any extra length on the upper tubes. (This is added to the center.) If you don't need extra length, set this to 0. The designer recommends setting this to at least wallThickness to prevent some weirdness.
upperTubeExtraLength = 5; // [ 0 : 0.1 : 100 ]

/*[Hidden]*/
$fn = 100;

bottomTubeLength = tubeLength + bottomTubeExtraLength;
upperTubeLength = tubeLength + upperTubeExtraLength;
stopDiameter = wallThickness > 3 ? ( wallThickness * 1.5 ) : 3;

difference() {
	translate( [ 0, 0, bottomTubeLength ] ) {
		rotate( [ 0, 180, 0 ] ) {
			cylinder( bottomTubeLength, d = outerDiameter );
			translate( [0, 0, ( bottomTubeLength - barbLength ) ] )
				cylinder( barbLength, d1 = ( outerDiameter + wallThickness ), d2 = outerDiameter );
			if ( insertStop == "Yes" )
				translate( [ 0, 0, ( ( ( bottomTubeLength - barbLength ) / 2 ) + ( bottomTubeExtraLength / 2 ) ) ] )
					cylinder( wallThickness, d = ( outerDiameter + stopDiameter ) );
		}
		rotate( [ 0, jointAngle, 0 ] ) {
			cylinder( upperTubeLength, d = outerDiameter );
			translate( [0, 0, ( upperTubeLength - barbLength ) ] )
				cylinder( barbLength, d1 = ( outerDiameter + wallThickness ), d2 = outerDiameter );
			if ( insertStop == "Yes" )
				translate( [ 0, 0, ( ( ( upperTubeLength - barbLength ) / 2 ) + ( upperTubeExtraLength / 2 ) ) ] )
					cylinder( wallThickness, d = ( outerDiameter + stopDiameter ) );
		}
		rotate( [ 0, ( 0 - jointAngle), 0 ] ) {
			cylinder( upperTubeLength, d = outerDiameter );
			translate( [ 0, 0, ( upperTubeLength - barbLength ) ] )
				cylinder( barbLength, d1 = ( outerDiameter + wallThickness ), d2 = outerDiameter );
			if ( insertStop == "Yes" )
				translate( [ 0, 0, ( ( ( upperTubeLength - barbLength ) * 0.5 ) + ( upperTubeExtraLength / 2 ) ) ] )
					cylinder( wallThickness, d = ( outerDiameter + stopDiameter ) );
		}
	}
	translate( [ 0, 0, bottomTubeLength ] ) {
		rotate( [ 0, 180, 0 ] )
			translate( [ 0, 0, -0.5 ] )
				cylinder( ( bottomTubeLength + 1 ), d = (outerDiameter - wallThickness ) );
		rotate( [ 0, jointAngle, 0 ] )
			translate( [ 0, 0, -0.5 ] )
				cylinder( ( upperTubeLength + 1 ), d = ( outerDiameter - wallThickness ) );
		rotate( [ 0, ( 0 - jointAngle), 0 ] )
			translate( [ 0, 0, -0.5 ] )
				cylinder( ( upperTubeLength + 1 ), d = ( outerDiameter - wallThickness ) );
	}
}
```


[User]
I'm looking to create a parametric embroidery hoop design using OpenSCAD. I need a two-part hoop: an inner solid ring and an outer ring that has a split and a clasp mechanism for tightening. The hoops should have a circular profile when viewed from above (i.e., a cylinder).

Here are the key parameters I need to control, and some initial values to start with:

*   **hoopJoinDia:** The diameter where the inner and outer hoops meet (e.g., 75 mm).
*   **hoopZ:** The height/thickness of the hoops (e.g., 10 mm).
*   **hoopTr:** The radial thickness of each hoop (e.g., 3 mm).
*   **claspX:** The depth/thickness of the clasp (e.g., 10 mm).
*   **claspSide:** The width of one clasp tab (e.g., 7 mm).
*   **claspGap:** The gap between the two clasp tabs (e.g., 5 mm).
*   **claspY:** The overall width of the clasp (calculated from claspSide and claspGap).
*   **claspZ:** The height of the clasp (e.g., 10.5 mm).
*   **claspHoleEdge:** The distance from the edge of the clasp to the center of the screw hole (e.g., 2 mm).

The outer hoop needs to have a clasp that uses a heat-set threaded insert and an M3 screw for tightening. I'd like the design to use the standard M3 screw dimensions. I'll need to make sure that it properly models the heat-set insert and the corresponding screw clearance. I don't need a model of the screw or the insert itself, just the space they would occupy. I'll also need the proper clearance in the outer hoop for the clasp itself.

I'll be rendering this at a fairly high resolution, so I will want to have a `$fa` variable (e.g., 1) and a `$fs` variable (e.g., 0.4), and a small `delta` value (e.g., 0.002) to handle tolerances.

I'd like two files generated: one for the main hoop design (`embroideryHoop.scad`) and another for the screw/insert definitions (`screws.scad`). Please include the standard M3 dimensions. I'd like to be able to access and change all of the parameters I've listed, including the $fa, $fs and delta values via the OpenSCAD customizer.

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

	mgp Dec 2024
	A simple needle work hoop.
	Closure will be with M3 hex head and heat insert threads.

	notional units in mm
 */

include <screws.scad>

// -------------------------------------------------------------------------
// fixed measurements & variables

// Adjust these for hoop size
// diameter at the join
hoopJoinDia		= 75;
// height of the hoops
hoopZ			= 10;
// radial thickness of hoops
hoopTr			= 3;

/* [Hidden] */ // Hide the remainder from the customizer

// dimensions of clasp -- in construction order
claspX			= hoopZ;
claspSide		= 7;	// one clasp tab width
claspGap		= 5;
claspY			= 2*claspSide + claspGap;
claspZ			= 10.5;
claspHoleEdge	= 2;

//	resolution for rendering
$fa				= 1;
$fs				= 0.4;
delta			= 0.002;

// -------------------------------------------------------------------------
// construction

// Make and save an STL of each of these separately for printing.

translate([0, (hoopJoinDia/2 + hoopTr), 0])
	innerHoop();
translate([0, -(hoopJoinDia/2 + hoopTr), 0])
	outerHoop();

// -------------------------------------------------------------------------
// modules

module hoopJoinReference()
{
	color("red")
	translate([0, 0, -1])
	difference()
	{
		cylinder(d=hoopJoinDia+delta, h=hoopZ+2);
		translate([0, 0, -delta/2])
		cylinder(d=hoopJoinDia-delta, h=hoopZ+2+delta);
	}
}

module outerHoop()
{
	// outer hoop is split and has a Closure
	difference()
	{
		union()
		{
			difference()
			{
				cylinder(d=hoopJoinDia + 2*hoopTr, h=hoopZ);
				translate([0, 0, -delta/2])
					cylinder(d=hoopJoinDia, h=hoopZ + delta);
			}
			clasp();
		}
		claspGapper();
	}
}

module clasp()
{
	cid = 2; // clasp insertion depth (for flat to round join)
	// clasp offsets
	claOX = hoopJoinDia/2 + hoopTr;
	claOZ = claspX/2 + (hoopZ - claspX)/2;
	cylOZ = -claspX + claspZ + 3*delta;	// cylinder Z offset

	// screw offsets
	soY = claspY/2 + delta;
	soZ = claspZ - m3CapD/2 - claspHoleEdge;

	translate([claOX, 0, claOZ])
	rotate([0, 90, 0])
	difference()
	{
		intersection()
		{
			translate([0, 0, (claspZ - cid)/2])
				cube([claspX, claspY, claspZ + cid], center=true);

			translate([0, 0, cylOZ])
			rotate([90, 0, 0])
				cylinder(r=claspX, h=claspY+2*delta, center=true);

		}
		// voids for screw and heat insert
		translate([0, 0, soZ])
		{
			translate([0, -soY, 0])
			rotate([-90, 0, 0])
			m3screwVoid(h=claspY + 2*delta);

			translate([0, soY - delta/2, 0])
			rotate([90, 0, 0])
			m3tiVoid(center=false);
		}
	}
}

module claspGapper()
{
	translate([hoopJoinDia/2 - 2*hoopTr, -claspGap/2, -delta/2])
		cube([20, claspGap, hoopZ + delta]);
}

module innerHoop()
{
	// inner hoop is a solid, unbroken hoop
	difference()
	{
		cylinder(d=hoopJoinDia, h=hoopZ);
		translate([0, 0, -delta/2])
			cylinder(d=hoopJoinDia - 2*hoopTr, h=hoopZ + delta);
	}
}

// -------------------------------------------------------------------------
// eof

```
screws.scad:
```
/*	screws.scad

	mgp Dec 2024
	Measurements and shapes for machine screws and threaded inserts.
	Useful info at
	https://hackaday.com/2019/02/28/threading-3d-printed-parts-how-to-use-heat-set-inserts/

	notional units in mm
 */

//	resolution for rendering
$fa = 1;
$fs = 0.4;

// -------------------------------------------------------------------------
// fixed measurements & variables
delta			= 0.002;

// M2.5 void dimensions
// M2.5 screw (good)
m25CapD			= 5.2;	// actual 4.31
m25CapH			= 1.4;	// actual 1.4
m25ShaftD		= 3.2;	// actual 2.37

// M2.5 threaded insert (good)
m25tiD			= 4.5;	// actual 4.41
m25tiH			= 5.25;	// actual 3.45 (3.5 * 1.5)

// M2.5 hex nut (sus)

// M3 void dimensions
// M3 screw (good)
m3CapD			= 6.2;	// actual 5.36
m3CapH			= 3;	// actual 3
m3ShaftD		= 3.8;	// actual 2.88

// M3 threaded insert (good)
m3tiD			= 5;	// actual 5.56
m3tiH			= 6;	// actual 3.8 (4.0 * 1.5)

// M3 hex nut (sus)

// -------------------------------------------------------------------------
// calculated & derived variables

/*
// m3 ti
{
	m3tiVoid();
	translate([2*m3tiD, 0, 0]) m3tiVoid(true);
	translate([4*m3tiD, 0, 0]) m3tiVoid(false);
}
*/

/*
// m2.5 ti
{
	m25tiVoid();
	translate([2*m25tiD, 0, 0]) m25tiVoid(true);
	translate([4*m25tiD, 0, 0]) m25tiVoid(false);
}
*/

//m3screwVoid();
//m25screwVoid();

// -------------------------------------------------------------------------
// construction

module m25tiVoid(center=true)
{
	cylinder(d=m25tiD, h=m25tiH, center=center);
}

module m25screwVoid(h=5*m25CapH)
{
	cylinder(d=m25CapD, h=m25CapH);
	cylinder(d=m25ShaftD, h=h);
}

module m3tiVoid(center=true)
{
	cylinder(d=m3tiD, h=m3tiH, center=center);
}

module m3screwVoid(h=5*m3CapH)
{
	cylinder(d=m3CapD, h=m3CapH);
	cylinder(d=m3ShaftD, h=h);
}

// -------------------------------------------------------------------------
// modules

// -------------------------------------------------------------------------
// eof

```


[User]
Hi, I'm looking for some help designing a few OpenSCAD files for generating crochet basket bases. I'd like to be able to customize the shape, size, and hole patterns. I've used OpenSCAD before, but I'm not great at the math. I've got a couple of examples but they're not very good, and I want to go in a bit of a different direction.

Specifically, I'd like two main shapes: a rectangle/square, and a stadium/circle shape. Here's what I'm thinking for each:

For the **rectangle/square base**, I need the following parameters:

*   **Base Thickness:** Adjustable thickness of the base.
*   **Hole Diameter:** Diameter of the holes for crocheting, sized for a particular needle.
*   **Hole Edge Distance:** The distance between the edge of a hole and the edge of the base, also the space between the holes.
*   **Number of Holes on X Axis:** Number of holes along the X-axis.
*   **Number of Holes on Y Axis:** Number of holes along the Y-axis.

The holes should be evenly spaced, and there should be an option for the user to make a square, as well as rectangles, by varying the number of holes.

For the **stadium/circle base**, I need these parameters:

*   **Base Thickness:** Adjustable thickness of the base.
*   **Base Width:**  The width of the stadium, which will also be the diameter of the end semicircles in the case of a circle.
*   **Hole Diameter:** Diameter of the holes.
*   **Hole Edge Distance:** Distance from the hole edge to the base edge and space between holes
*   **Number of Straight Side Holes:** The number of holes along the straight sides of the stadium shape. This will be zero for a circle.

Again, the holes should be evenly spaced, and the hole pattern should transition smoothly from the straight section to the semicircular ends.

I'd like these to be fully parametric, and I'd like to avoid using a library unless it makes a lot of sense. I want to keep the code as readable as possible, while also using best practices and good design. I'm hoping you can handle the math to position the holes and size the shapes correctly. The user should be able to adjust all of those parameters using the customizer.

Could you please create the necessary OpenSCAD files for this? Thank you so much!

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

	mgp Dec 2024
	A rectangular base for basket crochet. Also makes square base.

	notional units in mm
 */

// -------------------------------------------------------------------------
// fixed measurements & variables
// change these constants to vary the base
// formatted for customizer
// base thickness
baseT			= 3.0;	// [0.8: 0.1: 5.0]
// individual hole diameter sized for your crochet needle
holeDia			= 9;	// [3.3: 0.1: 10.0]
							// 9mm hole works well with 6.5--8 mm needle
							// 4.5mm works well with 3.5 mm needle
// distance from hole edge to base edge; also the inter-hole web spacing
holeEdge		= 1.2; // [0.4: .1: 3.0]
// number of holes on X edge
numHolesX		= 15;	// [5: 50]
// number of holes on Y edge; when numHolesX = numHolesY you get a square
numHolesY		= 15;	// [5:50]

/* [Hidden] */
//	resolution for rendering
$fa = 1;
$fs = 0.4;
delta			= 0.002;

// -------------------------------------------------------------------------
// calculated & derived variables
holeSpan		= holeDia + holeEdge;
baseX			= numHolesX * holeSpan + holeEdge;
baseY			= numHolesY * holeSpan + holeEdge;

echo ("========================================");
echo ("holeSpan: ", holeSpan);
echo ("baseX: ", baseX);
echo ("baseY: ", baseY);
echo ("Ensure this will fit on your printer bed.");
echo ("========================================");

// -------------------------------------------------------------------------
// construction

rectangleBase();

// -------------------------------------------------------------------------
// modules
module rectangleBase()
{
	difference()
	{
		base();
		edgeHolesX();
		edgeHolesY();
	}
}

module edgeHolesX()
{
	// corner holes from this routine lay over the corner holes from
	// edgeHolesY, and should with no visible effect
	oX = -((numHolesX -1 )/2 * holeSpan);
	oY = (baseY - holeDia)/2 - holeEdge;

	// positive Y side holes
	translate([oX, oY, 0])
		for (i = [0: 1: numHolesX-1])
		{
			translate([i*holeSpan, 0, baseT/2])
				cylinder(d=holeDia, h=2*baseT, center=true);
		}

	// negative Y side holes
	translate([oX, -oY, 0])
		for (i = [0: 1: numHolesX-1])
		{
			translate([i*holeSpan, 0, baseT/2])
				cylinder(d=holeDia, h=2*baseT, center=true);
		}
}

module edgeHolesY()
{
	// corner holes from this routine lay over the corner holes from
	// edgeHolesX, and should with no visible effect

	oX = (baseX - holeDia)/2 - holeEdge;
	oY = -(numHolesY - 1)/2 * holeSpan;

	// positive X side holes
	translate([oX, oY, 0])
		for (i = [0: 1: numHolesY-1])
		{
			translate([0, i*holeSpan, baseT/2])
				cylinder(d=holeDia, h=2*baseT, center=true);
		}

	// negative X side holes
	translate([-oX, oY, 0])
		for (i = [0: 1: numHolesY-1])
		{
			translate([0, i*holeSpan, baseT/2])
				cylinder(d=holeDia, h=2*baseT, center=true);
		}
}

module base()
{
bX = (baseX - holeDia)/2 - holeEdge;
bY = (baseY - holeDia)/2 - holeEdge;
boxCornerR = holeDia/2 + holeEdge;

	// construct tthe base from edge measurements
	points = [	[-bX, -bY, 0], [bX, -bY, 0],
				[bX, bY, 0], [-bX, bY, 0] ];

	rounded_box(points, boxCornerR, baseT);
}

//	rounded_box() from hull.scad which is from:
//	https://hackaday.com/2018/02/13/openscad-tieing-it-together-with-hull/
module rounded_box(points, radius, height){
	hull(){
		for (p = points){
			translate(p)
				cylinder(r=radius, h=height);
		}
	}
}

// -------------------------------------------------------------------------
// eof

```
stadiumBase.scad:
```
/*	stadiumBase.scad

	mgp Dec 2024
	A stadium shaped base for basket crochet. Also makes circlular bases.

	notional units in mm
 */

// -------------------------------------------------------------------------
// fixed measurements & variables
// BEGIN USER CONFIG
// change these constants to vary the base

// base thickness
baseT			= 2;
// width of the stadium, which is also the radius of the end semicircles
baseY			= 150;
// individual hole diameter
holeDia			= 9;
							// 9mm hole works well with 6.5--8 mm needle
							// 4.5mm works well with 3.5 mm needle
// distance from hole edge to base edge; this is also the space between holes
holeEdge		= 1.2;
// straight side hole units; each "hole unit" is one hole + one web space wide. Set to 0 (zero) for circles.
numHolesSS		=0;
// END USER CONFIG
/* [Hidden] */
// -------------------------------------------------------------------------
// calculated & derived variables

eR				= baseY/2;	// end radius
holeSpan		= holeDia + holeEdge;
baseX			= numHolesSS * holeSpan ;	// length of the stadium
echo ("Straight side: ", baseX);
LOA				= baseX + baseY;
echo ("========================================");
echo ("Width: ", baseY);
echo ("Length over all: ", LOA);
echo ("Ensure this will fit on your printer bed.");
echo ("========================================");

//	resolution for rendering
$fa = 1;
$fs = 0.4;
delta			= 0.002;

// -------------------------------------------------------------------------
// construction

stadiumBase();

// -------------------------------------------------------------------------
// modules
module stadiumBase()
{
	middle();
	endCap();
	otherEndCap();
}

module middle()
{
	// the middle rectangular section, centered
	xO = baseX/2 - holeDia/2 - holeEdge/2;
	yO = baseY/2 - holeDia/2 - holeEdge;

	difference()
	{
		cube([baseX + 2*delta, baseY, baseT], center=true);

		translate([-xO, yO, 0])
		for (i = [0: 1: numHolesSS - 1])
		{
			translate([i * holeSpan, 0, 0])
			cylinder(d=holeDia, h=3*baseT, center=true);
		}

		translate([-xO, -yO, 0])
		for (i = [0: 1: numHolesSS - 1])
		{
			translate([i * holeSpan, 0, 0])
			cylinder(d=holeDia, h=3*baseT, center=true);
		}
	}
}

module otherEndCap()
{
	mirror([1, 0, 0])
		endCap();
}

module endCap()
{
	translate([baseX/2, 0, 0])
	difference()
	{
		semiCircle();
		semiCircleHoles();
	}
}

module semiCircle()
{
	// half circle in the positive X plane
	difference()
	{
		cylinder(d=baseY, h=baseT, center=true);
		translate([-baseY/2, 0, 0])
			cube([baseY, baseY + delta, baseT+delta], center=true);
	}
}

module semiCircleHoles()
{
	// semiCircle hole punch, in the positive X plane
	hpR = baseY/2 - holeDia/2 - holeEdge;	// hole punch radius
	dCE = baseY - holeDia - 2*holeEdge;	// diameter of hole centers
	arcSpan = (dCE/2) * PI;
	numHoles = round(arcSpan / holeSpan);

	rStep = 180 / numHoles;

	for(i = [0: 1: numHoles - 1])
	{
		rotate([0, 0, i*rStep + rStep/2])
			translate([0, -hpR, 0])
				cylinder(d=holeDia, h=2*baseT, center=true);
	}
}
// -------------------------------------------------------------------------
// eof

```


[User]
Okay, I'm looking to create a set of modular, honeycomb-style shelves that can be mounted to a wall using hidden, dovetail joiners. I'd like the design to be fully parametric so I can easily adjust the size and number of shelves and mounting pieces. I've been looking at some existing models and I feel like this is the best way to approach the design.

Here are the main features I'd like the design to include:

*   **Honeycomb Cell:** The basic shape should be a hexagon. I need to be able to specify the width of each hexagon, which should also be the maximum width of the printed piece, since it should fit within my print bed.
*   **Wall Thickness:** The thickness of the walls of the hexagon should be adjustable, and it's important that it be at least 3/4 the diameter of any mounting screw heads I'm using.
*   **Depth:** I should have options for determining depth: either using an "recommended" depth based on the inner circumradius of the hexagon, or by manually setting the depth to a specific value. There should also be a setting to add a bit of extra depth for a window recession, if I choose to have that.
*   **Dovetail Joiners:** I want to be able to generate dovetail joining pieces that will fit into recessed areas on the back of the main hexagonal shelf cells. These joiners should have screw holes so the whole unit can be screwed into a wall and hidden. I need to be able to specify the depth of the dovetail. I should be able to chose how many to generate with each cell.
*   **Staves:** I also want small stave pieces for helping to stabilize the dovetail joiners, both long staves and short staves. I need to be able to choose how many to generate with each cell.
*   **Fasteners:**  I need to be able to specify the dimensions of the screws and brads I plan to use. This will include the screw diameter, screw head diameter and thickness, countersink depth, and how far to inset the screw within the dovetail joint. I also need to specify the diameter and head diameter of any brad nails for temporary attachment.
*   **Window/Door:** I would like the option to include a recess for an acrylic or plexiglass window or door, with its own adjustable thickness and a small finger hole for easy removal. If this option is used, the depth should be extended a bit. I also want a way to create an SVG file for cutting this window on a laser cutter.
*   **Divider:** I would like an optional horizontal divider that runs across the center of the cell.
*   **Hooks:** I'd like to have an optional "hooks" module for generating an array of hooks to hang below another cell. I should be able to choose how many hooks there are and their depth and distance apart, along with the size of the hooks and angles.
*   **Tolerance:** I also need a way to specify a small tolerance between parts for a snug fit during 3D printing.

So, to summarize, it should be a fully parametric design that includes: a main hexagonal cell, optional screw-in dovetail joiner pieces (with optional brad holes for temporary attachment), optional staves for reinforcing the dovetails, optional acrylic/plexiglass windows with finger holes, and an optional center divider, and the optional hooks. I'll need to specify the dimensions of all these pieces. The design should be able to render all pieces together as a plate or as individual pieces, with individual SVG files for window cutouts.

I’m thinking that this design can be done in a single OpenSCAD file. This would make it a lot easier to generate the parts. I don't want the AI to add any external files for this design. I'm also not using any existing libraries, so there should be no `include` statements.

[Assistant]
hexshelf.scad:
```
/*
modular honeycomb shelf generator.
Hexagon_width can be no larger than your print area's wider dimension
wall thickness should be a minimum of 3/4 the diameter of the mounting screw heads.
Brad holes are provided primarily for fitment and are not meant to be load bearing (the brads will pull out of the wall)
Default settings are for 15 gauge wire brads, standard drywall screws.
218mm width should fit on *most* average printer beds
Free for non-commercial use, please attribute and share alike.

https://github.com/SimplifyAndAddCoffee
https://www.thingiverse.com/simplifyandaddcoffee/designs

 _________________
|# :           : #|
|  : HACK      :  |
|  :   THE     :  |
|  :    PLANET :  |
|  :___________:  |
|     _________   |
|    | __      |  |
|    ||  |     |  |
\____||__|_____|__|

*/

/* [Main Parameters] */

// What to render.
render_type = "plated"; //["plated","preview","window cut svg"]
// how many joining pieces to print with each cell.
num_joiners = 2; // [0,1,2,3]
// how many edge pieces to print with each cell
num_covers = 3; // [0,1,2,3]
// how many long (joining) staves to print with each cell
num_longstaves = 3;  // [0,1,2,3]
// how many short (edge) staves to print with each cell
num_shortstaves = 3;  // [0,1,2,3]
// print a center horizontal divider shelf (optional)
include_divider=false; // [true,false]
// set to false if you only want to print the small pieces.
include_cell=true; // [true,false]
// what type of cell to render
cell_type="hex"; // ["hooks","hex"]
// how wide each cell is, (max=bed width)
hexagon_width = 218; //
// how thick the outer walls are. Note: Should be at least 3/4 the diameter of the screw heads used to attach to the wall.
wall_thickness = 10; //
// True to use inner circumradius as depth.
use_recommended_depth = false; // [true,false]
// manually set depth of shelf (mm)
depth_override = 170;
// depth of the dovetail joining pieces. Must be shorter than the total depth of the shelf.
dovetail_thickness = 20;
// recess for front acrylic window or door to keep dust out.
window_recession = true; //[true,false]
// thickness of material used for window/door
window_thickness = 2.9;
// size of finger hole for removing window
window_hole_size = 20;
// tolerance between parts
tol = 0.17;

/* [Fastener Specifications] */

// outer diameter of screw threads
screw_diameter = 4.1;
// diameter of screw head
screw_head_diameter = 8.5;
// for purpose of calculating inset
screw_head_thickness = 1;
// length of the tapered part of the screw head.
screw_countersink_depth =2.3;
// how far to recess the screw in the dovetail joint piece.
screw_inset = 10;
// diameter of the wire brads for positioning
brad_hole_diameter = 2;
// diameter of the wire brad heads
brad_head_diameter = 3.2;
// how deep the brad heads are
brad_head_inset = 1.5;

$fn=32+0;

//calculated values
outer_circumradius = hexagon_width /2;
outer_inradius = outer_circumradius * cos(30);
hexagon_height = outer_inradius * 2;
echo("hexagon height will be ",hexagon_height,". Ensure this is not wider than the smallest dimension of your printer bed.");
inner_inradius = outer_inradius - wall_thickness;
inner_circumradius = inner_inradius / cos(30);
inner_width = inner_circumradius * 2;
inner_height = inner_inradius * 2;
window_inradius = inner_inradius + window_thickness;
window_circumradius = window_inradius / cos(30);
window_width = window_circumradius * 2;
window_height = window_inradius * 2;
echo("interior cell width will be ",inner_width, ", and interior cell height will be ",inner_height, ", with a length per side of ",inner_circumradius);
echo("Window dimensions: inradius: ", window_inradius," circumradius/side: ", window_circumradius," width: ",window_width," height: ",window_height);
additional_depth = window_recession == true ? window_thickness * 1.25 : 0;
depth = use_recommended_depth == true ? inner_circumradius + additional_depth : depth_override + additional_depth;
echo("total depth will be ",depth);

module hex_shape(){

    difference(){
        cylinder(h=depth,r=outer_circumradius, center=false,$fn=6);
        cylinder(h=depth+1,r=inner_circumradius, center=false,$fn=6);
        }
}

module dovetail(){
l = outer_circumradius * 3/4;
w1 = wall_thickness * 0.5;
w2 = wall_thickness * 1.5;
h = dovetail_thickness;
dovetail_width = l / 3;
dovetail_inner = dovetail_width * 0.8 ;

        linear_extrude(height = h)
            polygon([[0,dovetail_inner+(dovetail_width-dovetail_inner)/2],[w2/2,dovetail_width],[w2/2,0],[0,(dovetail_width-dovetail_inner)/2]]);
}

module screw_hole(){
    union(){
        cylinder(h=dovetail_thickness+1,d=screw_diameter+2*tol);
        translate([0,0,dovetail_thickness-screw_inset-screw_head_thickness])
            cylinder(h=dovetail_thickness+1,d=screw_head_diameter+2*tol);
        translate([0,0,dovetail_thickness-screw_inset-screw_head_thickness-screw_countersink_depth])
        linear_extrude(height=screw_countersink_depth,scale=((screw_head_diameter+2*tol)/(screw_diameter+2*tol)))
                circle(d=screw_diameter+2*tol);
    }
}

module brad_hole(){
    union(){
        cylinder(h=dovetail_thickness+1,d=brad_hole_diameter+2*tol);
        translate([0,0,dovetail_thickness-brad_head_inset-tol])
        cylinder(h=dovetail_thickness+1,d=brad_head_diameter+2*tol);
    }
}

module stave(cutout=false,type="long"){
l= type=="long" ? wall_thickness * 2: wall_thickness;
w=outer_circumradius * 3/4 * 1/4;
h1= cutout == false? dovetail_thickness/3 : (dovetail_thickness/3)*1.045;
h2=h1*1.5;
    minkowski()
        union(){
            cube([l,w,h1]);
            cube([wall_thickness/4,w,h2]);
        }
    if(cutout==true)cube(tol);

}

module joiner(cutout=false,type="inner"){

//figure out how to calculate dovetail dimensions
l = outer_circumradius * 3/4;
w1 = wall_thickness * 0.5;
w2 = wall_thickness * 1.5;
h = dovetail_thickness;
dovetail_width = l / 3;
dovetail_inner = dovetail_width * 0.8 ;
minkowski(){
    union(){
        difference(){
            union(){
                translate([-w1/2,0,0])cube([w1,l,h]);
                    for(x=[0:1:1]){
                        mirror([x,0,0]){
                            dovetail();
                            translate([0,outer_circumradius * 3/4 * 2/3,0])dovetail();
                        }
                    }
            }

            if(cutout==false){
                union(){
                    for(y=[0:1:1]){ // main screw holes
                        translate([0,(outer_circumradius * 3/4 * 1/3 * 1/2 ) + ( y *outer_circumradius * 3/4 * 2/3) ,0]){
                            if(type=="inner"){
                                screw_hole();
                                }
                            for(z=[0:90:360]){
                                rotate([0,0,z])
                                    translate([w2/2*2/3,w2/2*2/3,0])
                                        brad_hole();
                            }
                        }
                    }
                    translate([-wall_thickness,outer_circumradius * 3/4 * 1/2 - outer_circumradius * 3/4 * 1/4 * 1/2,dovetail_thickness /3])
                        stave(cutout=true);
                }
            }
            if(type=="outer"){
                cube([w2,l+1,2*h+1]);
                    translate([0,outer_circumradius * 3/4 * 1/2 - outer_circumradius * 3/4 * 1/4 * 1/2,dovetail_thickness /3])
                    mirror([1,0,0])
                        stave(cutout=true);
            }
        }

    }
    if(cutout==true)cube(tol);
    }
}

module window_cutout(){
    difference(){
        cylinder(h=window_thickness*1.26,r=window_circumradius+tol/2,$fn=6);
        union(){
            for(z=[0:60:300]){
                rotate([0,0,z+30]){
                    translate([window_inradius,0,window_thickness*1.125]){
                        rotate([90,0,0]){
                            cylinder(h=window_circumradius/10,d=window_thickness/4,center=true);
                        }
                    }
                }
            }
        }

    }
}

module window_svg(){
    difference(){
        circle(window_circumradius,$fn=6);
        union(){
            translate([0,window_inradius,0])square(window_hole_size,center=true);
            translate([0,window_inradius-window_hole_size/2,0])circle(d=window_hole_size);
        }
    }
}

module cell(){
    difference(){
        hex_shape();
        union(){
            for(z=[180:60:300]){
                rotate([0,0,30+z])
                    translate([outer_inradius-0.001,-outer_circumradius * 3/4 * 1/2,0]){
                            joiner(cutout=true);
                            translate([-wall_thickness,outer_circumradius * 3/4 * 1/2 - outer_circumradius * 3/4 * 1/4 * 1/2,dovetail_thickness /3])
                                stave(cutout=true);
                        }
            }
            for(z=[0:60:120]){
                rotate([0,0,30+z])
                    translate([outer_inradius,-outer_circumradius * 3/4 * 1/2,0]){
                            joiner(cutout=true,type="inner");
                            translate([0,outer_circumradius * 3/4 * 1/2 - outer_circumradius * 3/4 * 1/4 * 1/2,dovetail_thickness /3])
                                mirror([1,0,0])
                                    stave(cutout=true,type="long");
                        }
            }
            if(window_recession==true){
                translate([0,0,depth-window_thickness*1.25])
                    window_cutout();
            translate([0,outer_inradius-wall_thickness*0.8,0])mirror([1,0,0])linear_extrude(height=0.4)text(text="TOP", size = wall_thickness/2,halign="center");
            }
        }

    }

}

module hooks(){
    hook_d=wall_thickness*2/3;
    hook_r=0.8;
    hook_l=wall_thickness*1.5;
    hook_rot=160;
    translate([0,inner_inradius,0]){
        difference(){
            union(){
                // baseplate
                linear_extrude(height = depth)
                    polygon([[outer_circumradius/2,wall_thickness],[inner_circumradius/2,0],[-inner_circumradius/2,0],[-outer_circumradius/2,wall_thickness]]);
                // supports
                difference(){
                    union(){
                        translate([0,-inner_inradius,0])
                            cylinder(h=depth,r=outer_circumradius,$fn=6);
                    }
                    union(){
                        translate([0,-inner_inradius,0])
                            cylinder(h=depth,r=inner_circumradius,$fn=6);
                        translate([0,-outer_circumradius*1.25,outer_circumradius*2])
                            rotate([45,0,0])
                                cube(outer_circumradius*4,center=true);

                    }
                }
                // hooks
                for(x=[-1:1:1]){
                    for(z=[1:1:3]){
                        translate([x*inner_circumradius/4,0,z*depth/4]){
                            translate([0,0,-hook_d*hook_r*2])
                                rotate([90,0,0])
                                    cylinder(h=hook_l,d=hook_d,$fn=6);
                                    translate([0,-hook_l,-hook_d*hook_r])
                                        rotate([180,90,0])
                                            rotate_extrude(angle=hook_rot)
                                                translate([hook_d*hook_r,0,0])
                                                    rotate([0,0,90])
                                                        circle(d=hook_d,$fn=6);
                            translate([0,-hook_l+cos(hook_rot)*hook_r*2,0])
                                rotate([0180-hook_rot,0,0])
                                    translate([0,0,0])
                                        sphere(d=hook_d, $fn=6);
                        }
                    }
                }
            }
            union(){
                rotate([0,0,90])
                    translate([outer_inradius-inner_inradius,-outer_circumradius * 3/4 * 1/2,0]){
                            joiner(cutout=true,type="inner");translate([0,outer_circumradius * 3/4 * 1/2 - outer_circumradius * 3/4 * 1/4 * 1/2,dovetail_thickness /3])
                                mirror([1,0,0])
                                    stave(cutout=true,type="short");
                            }
                translate([0,-wall_thickness,depth+outer_circumradius/2])
                    rotate([45,0,0])
                        cube(outer_circumradius,center=true);
            }
        }
    }
}

module divider(){
intersection(){
translate([-hexagon_width/2,-wall_thickness/2,0])
    cube([hexagon_width,wall_thickness,depth]);
    cylinder(h=depth - additional_depth,r=inner_circumradius-tol, center=false,$fn=6);
    }
}

module plated_bits(){
    translate([0,-outer_circumradius*1/3,0]){
        for(x=[1:1:num_joiners])
            translate([-wall_thickness + wall_thickness*2.1*x,0,0])
            joiner(cutout=false);
        for(x=[1:1:num_covers])
            translate([wall_thickness - wall_thickness*2.1*x,0,0])
            joiner(cutout=false,type="outer");
        for(x=[1:1:num_shortstaves])
            translate([wall_thickness - wall_thickness*2.1*x,-outer_circumradius * 3/4 * 1/4 * 1.1,0])
                stave(type="short");
        for(x=[1:1:num_longstaves])
            translate([-2*wall_thickness + wall_thickness*2.1*x,-outer_circumradius * 3/4 * 1/4 * 1.1,0])
                stave(type="long");
    }
}

module preview_bits(){
    for(z=[180:60:300]){
        rotate([0,0,30+z])
            translate([outer_inradius,-outer_circumradius * 3/4 * 1/2,0]){
                    color(c=[0.9,0,0],alpha=0.5)joiner(cutout=false);
                    translate([-wall_thickness,outer_circumradius * 3/4 * 1/2 - outer_circumradius * 3/4 * 1/4 * 1/2,dovetail_thickness /3])
                        color(c=[0,0,0.8],alpha=1)stave(cutout=false);
                }
    }
    for(z=[0:60:120]){
        rotate([0,0,30+z])
            translate([outer_inradius,-outer_circumradius * 3/4 * 1/2,0]){
                    color(c=[0.9,0,0],alpha=1)joiner(cutout=false,type="outer");
                    translate([0,outer_circumradius * 3/4 * 1/2 - outer_circumradius * 3/4 * 1/4 * 1/2,dovetail_thickness /3])
                        mirror([1,0,0])
                            color(c=[0,0,0.8],alpha=0.5)stave(cutout=true,type="short");
                }
    }
    if(window_recession==true){
        translate([0,0,depth-window_thickness*1.25])
            color(c=[0,0,0,0.1])linear_extrude(height=window_thickness)window_svg();
    }
}

if(render_type=="plated"){
    if(include_cell==true){
        if(cell_type=="hex")
            cell();
        if(cell_type=="hooks")
            hooks();
        }
    plated_bits();
    if(include_divider==true)
        translate([0,hexagon_height/2+wall_thickness*0.6,0])
            divider();
}

if(render_type=="window cut svg"){
window_svg();
}

if(render_type=="preview"){
    for(y=[0,outer_inradius*2,0]){
        translate([0,y,0]){

            color(c = [1,1,0], alpha=0.5)cell();
            color(c = [1,0.8,0], alpha=1)if(include_divider==true)divider();
            preview_bits();

            translate([2*outer_circumradius-sin(30)*outer_circumradius,outer_inradius,0]){

                color(c = [1,1,0], alpha=0.5)cell();
                color(c = [1,0.8,0], alpha=1)if(include_divider==true)divider();
                preview_bits();

            }

        }

    }

}

```


[User]
Hey, I'm looking to create a fully parametric 3D-printable bearing using OpenSCAD. I found this design by ThinkingandTinkering on Thingiverse (thing:6898888), and I want to recreate it in OpenSCAD, but with full customizability. The bearing consists of three main parts: rollers, a bottom housing, and a top housing that clicks onto the bottom one.

Here are the parameters I want to control:

*   **Roller:**
    *   `roller_diameter`: The diameter of the roller.
    *   `roller_height`: The height of the roller.
    *   `roller_bevel`: The size of the beveled edges on the roller.
*   **Housing:**
    *   `housing_diameter`: The outer diameter of the housing.
    *   `housing_height`: The height of a single housing part (both top and bottom pieces).
    *   `slot_width`: The width of the slot that allows the click-fit mechanism to work.
    *  `diameter_click_fit_edge`: The diameter of the edge of the click fit on the top housing.
    * `diameter_click_fit_indent`: The diameter of the indent for the click fit on the bottom housing.
*   **General:**
    *   `accuracy_preview`: The `$fn` value to use for preview mode.
    *   `accuracy_render`: The `$fn` value to use for final rendering.

I need three modules, I think: `Roller()`, `BottomHousing()`, and `TopHousing()`. The roller is a cylinder with optional beveled edges. The housings are more complex, requiring some rotation extrudes and differences to get the right profile and the click-fit.

I'd like to be able to choose between a "printing" mode that arranges the parts for easy printing and a "design" mode that shows individual parts. I'd also like to see cross-sections of the individual parts in the design view.

Could you generate the OpenSCAD code for this? I'm looking for a single file, if possible, with all the modules defined in it.

[Assistant]
Universal_3D_Printed_Bearing_That_Works.scad:
```
// Universal 3D Printed Bearing That Works.scad
//
// Original:
//   "Universal 3D Printed Bearing That Works"
//   By Thingiverse user: ThinkingandTinkering (Robert Murray-Smith)
//   Date: January 03, 2025
//   License: CC BY-SA
//   https://www.thingiverse.com/thing:6898888
//   Designed in Tinkercad
//
// Remix:
//   Version: Remix 1
//   Date: January 4, 2024
//   By: Stone Age Sculptor
//   License: CC BY-SA
//   Goal:
//     An identical shape with OpenSCAD.
//   Tip:
//     Open the "Customizer" in OpenSCAD.

view_mode = 0; // [0:For Printing, 1:Design Roller, 2:Design Bottom Housing, 3:Design Top Housing]

// The diameter of a roller.
roller_diameter = 10.00; // [9.00:0.01:11.00]

// The height of a roller.
roller_height = 10.00; // [9.00:0.01:11.00]

// The size of the beveled edge of a roller.
roller_bevel = 0.5; // [0.0:0.1:2.0]

// The outside diameter of the housing.
housing_diameter = 25; // [23.6:0.1:30]

// The height of a single housing part.
housing_height = 8.50; // [7.50:0.01:9.50]

// The width of the slot (gap) for the click fit.
slot_width = 3.2; // [1.0:0.1:5.0]

// The diameter of the edge of the click fit.
diameter_click_fit_edge = 1.90; // [1.70:0.01:2.20]

// The diameter of the indent for the click fit.
diameter_click_fit_indent = 3.90; // [3.60:0.01:4.20]

// The accuracy for the preview.
accuracy_preview = 50; // [20:100]

// The accuracy for the final render.
accuracy_render = 250; // [100:300]

/* [Hidden] */

// Overall accuracy.
$fn = $preview ? accuracy_preview : accuracy_render;

if(view_mode==0)
{
  // --------------------------------
  // For Printing
  // --------------------------------
  // By exporting the render as a 3mf file,
  // the parts are already separated, and
  // they can be arranged on the build plate
  // if needed.

  // Make 10 rollers.
  for(i=[0:4])
    for(j=[0:1])
      translate([6+12*i,66+j*12,0])
        Roller();

  // Show the bottom housing.
  translate([30,30,0])
    BottomHousing();

  // Show the top housing.
  translate([91,30,0])
    TopHousing();
}
else if(view_mode==1)
{
  // --------------------------------
  // Design Roller
  // --------------------------------
  Roller();

  // Show cross section
  translate([0,0,15])
  {
    difference()
    {
      Roller();

      color("Red")
        translate([-10,-20,-1])
          cube(20);
    }
  }
}
else if(view_mode==2)
{
  // --------------------------------
  // Design Bottom Housing
  // --------------------------------
  BottomHousing();

  // Show cross section
  translate([0,0,20])
  {
    difference()
    {
      BottomHousing();

      color("Red")
        translate([-50,-100,-1])
          cube(100);
    }
  }
}
else if(view_mode==3)
{
  // --------------------------------
  // Design Top Housing
  // --------------------------------
  TopHousing();

  // Show cross section
  translate([0,0,25])
  {
    difference()
    {
      TopHousing();

      color("Red")
        translate([-50,-100,-1])
          cube(100);
    }
  }
}

module Roller()
{
  // Make the cylinder out of three parts.
  // Adjust with 0.001 to be sure that
  // the parts connect.
  // Otherwise the parts might not connect
  // due to rounding errors.

  // Bottom beveled edge.
  if(roller_bevel > 0)
    color("PaleTurquoise")
      cylinder(h=roller_bevel, d1=roller_diameter-2*roller_bevel,d2=roller_diameter);

  // Middle straight part.
  color("LightSteelBlue")
    translate([0,0,roller_bevel-0.001])
      cylinder(h=roller_height-2*roller_bevel+0.002,d=roller_diameter);

  // Top beveled edge.
  if(roller_bevel > 0)
    color("DarkSeaGreen")
      translate([0,0,roller_height-roller_bevel])
        cylinder(h=roller_bevel,d1=roller_diameter,d2=roller_diameter-2*roller_bevel);

  // The original shape.
  // Move it to (0,0,0) on the xy-plane.
  // translate([-127,-50,0])
  //   import("Roller_x_10.stl");
}

module BottomHousing()
{
  // The 2D profile is created first.
  rotate_extrude(convexity=3)
  {
    difference()
    {
      HousingProfile2D(x_start = 8.3);

      // Remove a circle.
      // The will become the indented torus
      // for the click fit.
      translate([7.2,1.36])
        circle(d=diameter_click_fit_indent);
    }
  }

  // The original shape.
  // Move it to (0,0,0) on the xy-plane.
  // translate([53,45,0])
  //   import("Base.stl");
}

module TopHousing()
{
  difference()
  {
    rotate_extrude(convexity=4)
    {
      HousingProfile2D(x_start=8);

      // Add a rectangle that will become
      // the cylinder in the middle.
      translate([5.0,0])
        square([3,18.25]);

      // The next circle will become the torus
      // for the click-fit.
      // Avoid that it sticks out of the top,
      // by flattening the top of the circle.
      translate([7.55,17.37])
      {
        intersection()
        {
          circle(d=diameter_click_fit_edge);
          square([10,1.7],center=true);
        }
      }
    }

    // Remove the slot to separate the
    // both sides of the click fit.
    translate([0,0,11.7])
    {
      rotate([90,0,0])
      {
        translate([-slot_width/2,0,-50])
          cube([slot_width,100,100]);
        cylinder(h=100,d=slot_width,center=true);
      }
    }
  }

  // The original shape.
  // Move it to (0,0,0) on the xy-plane.
  // translate([-24,+33,0])
  //   import("Cap.stl");
}

// A common profile for both the
// bottom and top housing.
// It can be created with a list of
// coordinates for a polygon, or with
// 2D building blocks.
// This is with 2D building blocks.
module HousingProfile2D(x_start)
{
  difference()
  {
    translate([x_start,0])
      square([housing_diameter-x_start,housing_height]);

    // Remove a rotated rectangle.
    // The edges will be a little more than 45 degrees.
    // I tried 45 degrees first, but they didn't roll well.
    // Then I noticed that the original design has a slightly
    // larger angle.
    translate([17.1,2.0])
      scale([1,0.97]) // wider angle
        rotate(45)
          square(20);
  }
}

```


[User]
Hey, I'm looking to create a customizable, rugged container with a screw-on cap, similar to a military-style waterproof container. I've got an existing design (attached), but I'd like to have something more flexible and fully parametric from the ground up.

The key features I need are:

*   **Inside Diameter:** The inner diameter of the container needs to be 21mm.
*   **Customizable Height:** I need to be able to easily set the inside height of the container as a parameter.
*   **Screw-on Cap:** The cap should screw on securely, with threads designed to be compatible with a standard O-ring seal.
*  **O-ring compatibility**: I want the design to be compatible with a 15/16" (23.8mm) inside diameter x 1/16" (1.6mm) thick O-ring, specifically American Standard AS568 #21 or Danco #33.
*   **Body and Cap Ribs:** The container body and cap should both have vertical ribs for enhanced grip.
*   **Chamfered Edges:** I want both the cap and base to have chamfered edges for a more finished look.
*   **Thread Tolerance:** The threads should have a slight tolerance to allow for smooth screwing.
*  **Units:** Please use millimeters as your units.
*  **Modularity:** I'd prefer to have the cap and body defined in separate modules so that I can potentially extend/modify them later.

I'm not looking to improve my original code, I'd prefer that this be written from the ground up and not based on my attempt, but I'm providing it so you have a design to consider. I don't have any particular stylistic requirements beyond making it look industrial and robust, and the design should work well printed in plastic.

I’d like this all in OpenSCAD, of course. Could you generate the SCAD files for me? I'd like to be able to adjust all of these parameters, especially the container height and thread parameters, so that I can iterate on the design.

[Assistant]
screw_bottle_wp2.scad:
```
inside_height = 40;//[19:200]

translate([16, 0, 0])
  bottom(inside_height);

translate([-16, 0, 0])
  cap();

module bottom(ih) {
  $fn = 120;
  bh = ih - 7;
  difference() {
    union() {//body
      cylinder(r = 14.3, h = bh);

      hull() {
        translate([0, 0, bh - 4])
          cylinder(r = 15.3, h = 4);

        translate([0, 0, bh - 8])
          cylinder(r = 14.3, h = 1);
      }
      //threads
      translate([0, 0, bh - 1])
        linear_extrude(height = 10, twist = -10 * 180)
          translate([0.5, 0])
            circle(r = 12.5);
      //side ribs
      for(b = [0:5])
        rotate([0, 0, 30 * b])
          translate([-15.3, -1.2, 0])
            cube([30.6, 2.4, bh - 4]);
    }
    //trim top of threads
    translate([0, 0, bh + 8.5])
      rotate_extrude()
        translate([12.0, 0])
          square([1, 1]);
    //taper top of threads
    translate([0, 0, bh + 8.5])
      rotate_extrude()
        translate([13, 0])
          circle(r = 1, $fn = 4);
    //interior
    translate([0, 0, 2])
      cylinder(r = 10.5, h = bh + 8);

      //bottom chamfer
    rotate_extrude()
      translate([15.3, 0])
        circle(r = 3, $fn = 4);

        //o-ring
    translate([0, 0, bh + 0.8])
      rotate_extrude()
        translate([12.8, 0])
          circle(r = 0.8);
  }

}

module cap() {
  $fn = 120;
  difference() {
    union() {
      difference() {
        //lid body
        union() {
          hull() {
            translate([0, 0, 8])
              cylinder(r = 15.3, h = 4);

            translate([0, 0, 4])
              cylinder(r = 14.5, h = 1);
          }

          cylinder(r = 14.5, h = 5);
        }

      }
      //side ribs
      for(g = [0:5])
        rotate([0, 0, 30 * g])
          translate([-15.3, -1.2, 0])
            cube([30.6, 2.4, 8]);
    }

    //lid chamfer
    rotate_extrude()
      translate([15.3, 0])
        circle(r = 3, $fn = 4);

        //threads
    translate([0, 0, 2])
      linear_extrude(height = 10.1, twist = -10.1 * 180)
        translate([0.5, 0])
          circle(r = 12.8);//0.3 add for tolerance

          //inside thread chamfer
    translate([0, 0, 12])
      rotate_extrude()
        translate([11.3, 0])
          circle(r = 2, $fn = 4);
  }
}

```


[User]
Hey, I'm trying to create a customizable shelf system that can work both within Dave's Modular Organizer and as standalone units. I've got a good starting point in mind, but I need help generating the OpenSCAD code from scratch. I'll try to be as clear as possible about what I need.

First, I'd like the ability to set the overall dimensions, including:

*   **Height:**  The total height of the shelf unit.
*   **Width:** The total width of the shelf unit.
*   **Depth:** The total depth of the shelf unit.

Then, I need to specify the thickness of the top and bottom, as well as a top brim which will help contain items placed on top. I'd like these parameters:

*   **Top Thickness:** The thickness of the top panel.
*   **Top Brim Height:** The height of the brim on the top; setting this to '0' should create no brim.
*   **Top Brim Width:** The width of the top brim.
*   **Base Thickness:** The thickness of the bottom panel/base.

Next, I need to be able to customize the shelves themselves. I'd like these controls:

*   **Number of Shelves:** The number of interior shelves (not including the base).
*   **Shelf Thickness:** The thickness of each shelf.
*  **Shelf Corner Cut:** The distance to cut the corner of each shelf, setting to '0' should result in square shelves.

Finally, I need parameters for optional walls. This will include a back, left, and right wall, each with:

*   **Wall Start:** The starting position of the wall relative to the cabinet's origin.
*   **Wall End:** The ending position of the wall relative to the cabinet's origin.
*   **Wall Thickness:** The thickness of the wall; setting this to '0' should omit the wall.
    *   I'll need this for the back, left, and right walls.

I'd like all dimensions in millimeters, and for the shelves to be evenly spaced. The code should use a single module to generate the shelf system.
I'm looking for a design that's similar to what you'd see with DMO, i.e.,  widths and depths at multiples of 38.5 mm (like 77.0 mm), wall thicknesses of 1.6 mm, and a base of 8.0 mm. I’d also like the shelves to be easily printable, so avoid very thin or unsupported features.

I don't need any specific library dependencies, but let me know if you think any would be helpful. I'm thinking the code will generate the whole shelf system as one piece, like the example I provided. It would be great if the shelves could be generated with both square corners or a cut corner.

Could you generate a basic OpenSCAD file for me?

[Assistant]
Customizable_DMO_Shelves.scad:
```
//Customizable DMO Shelves (mm)

/* [Cabinet Parameters (mm)] */
//
// Total cabinet height
height = 180.0;

// Total cabinet width
width = 77.0;

// Total cabinet depth
depth = 38.5;

// Thickness of cabinet top
topThickness = 8.0;

// Height of top brim, Enter '0' for no brim
topBrimHeight = 8.0;

// Width of top brim
topBrimWidth = 1.6;

// Thickness of cabinet base
baseThickness = 8.0;

/* [Shelf Parameters (mm)] */
//
// Number of shelves, not including base
numberOfShelves=3;

// Thickness of each shelf
shelfThickness = 1.6;

// Shelf front corner cut, Enter "0" for square
shelfCornerCut = 5;

/* [Wall Parameters (mm)] */
//
// Starting location of back wall
backWallStart = 0;

// Ending location of back wall
backWallEnd = 77.0;

// Thickness of back wall, Enter '0' for no wall
backWallThickness = 1.6;

// Starting location of left  wall
leftWallStart = 0;

// Ending location of left wall
leftWallEnd = 38.5;

// Thickness of left wall, Enter '0' for no wall
leftWallThickness = 1.6;

// Starting location of right wall
rightWallStart = 0;

// Ending location of right wall
rightWallEnd = 38.5;

// Thickness of right wall, Enter '0' for no wall
rightWallThickness = 1.6;

// Function to create shelf cabinet
module createShelfCabinet() {
    tempTopBrimHeight = (topBrimWidth <= 0 ? 0 : topBrimHeight);

    // Cabinet base
        cube([width, depth, baseThickness], center=false);

    //Cabinet top and brim
    difference() {
        translate([0, 0, (height - topThickness - tempTopBrimHeight)])
        cube([width, depth, topThickness + tempTopBrimHeight], center=false);

    if (tempTopBrimHeight > 0)
        translate([topBrimWidth, -.001, (height - tempTopBrimHeight)])
        cube([width - 2*topBrimWidth, depth - topBrimWidth + .001, tempTopBrimHeight + .001], center=false);
    }

    //Cabinet walls
        translate([backWallStart, depth - backWallThickness, 0])
        cube([abs(backWallEnd - backWallStart), backWallThickness, height - tempTopBrimHeight], center=false);

        translate([0, leftWallStart, 0])
        cube([leftWallThickness, abs(leftWallEnd - leftWallStart), height - tempTopBrimHeight], center=false);

        translate([width - rightWallThickness, rightWallStart, 0])
        cube([rightWallThickness, abs(rightWallEnd - rightWallStart), height - tempTopBrimHeight], center=false);

    //Shelves

    // Calculate distance between shelves
        distanceBetweenShelves = ((height - topThickness - tempTopBrimHeight -  baseThickness) - (shelfThickness * numberOfShelves)) / (numberOfShelves + 1);

    if (numberOfShelves > 0){
        if (shelfCornerCut <=0){
        for (i = [1:numberOfShelves])
        translate([0, 0, (i - 1) * shelfThickness + (i * distanceBetweenShelves) + baseThickness])
        cube([width, depth, shelfThickness], center=false);
    }
    else{
        // Define the points for cut shelves
    points = [
        [shelfCornerCut, 0],
        [width - shelfCornerCut, 0],
        [width, shelfCornerCut],
        [width, depth],
        [0, depth],
        [0, shelfCornerCut]
    ];

        for (i = [1:numberOfShelves])
        translate([0, 0, (i - 1) * shelfThickness + (i * distanceBetweenShelves) + baseThickness])
        linear_extrude(shelfThickness)
        polygon(points);
        }
    }
}

// Call function to create shelf cabinet
createShelfCabinet();
```


[User]
I need a customizable T-nut for a table saw track, and I'd like to be able to adjust a few things. I've got a basic design concept and some parameters I need to control.

Here's what I'm looking for:

**Overall Shape:**
*   The T-nut will have a rectangular base with rounded edges.
*   It needs a narrower "table slot" section at the top that fits into the track.
*   I need to control the total length, width, and height of the T-nut.
*   The height of the table slot and its width also needs to be adjustable.
*   The edges should be rounded with a user defined radius

**Screws:**
*   I need to be able to add a user specified number of screw holes, distributed evenly along the length of the T-nut, and be able to turn them on or off.
*   The screw holes should have countersunk or hex head options.
*   I'd need control over the screw head diameter and thickness, as well as the screw diameter itself and an offset for the screw hole.

Essentially, I need an OpenSCAD file that generates the T-nut with all of these adjustable parameters, and I'm not using any libraries. The parameters need to be explicitly defined so it's easy to adjust the values in the OpenSCAD UI. I'm looking for a single, well-organized .scad file for this. Let me know if you have any questions!

[Assistant]
Customizable_TNut2.scad:
```

// the length of the T Nut
length = 80;

// the max width of the T Nut
width = 21;

// the total height of the T Nul
total_height = 6.7;

// The narrower or larger top width of the T Nut; passing in to the table slot
table_slot = 16.37;

// Height of the table slot
table_slot_height = 2.75;

// Radius of the corner edge
edge_cylinder_radius = 2;

// add screw holes
add_screws = "yes"; // [yes, no]

// screw head type
screw_head_type = "hex"; // [hex, counter sunk]

//Number of screw holes to add
nr_of_screws = 3;

// Diameter of Screw head
screw_head_diameter = 11.6;

// Thickness of the Screw head
screw_head_thickness = 4.3;

// Screw Diameter
screw_diameter = 6;

// The hole diameter will be bigger then the srew diameter by this offset
screw_hole_offset = 0.2;

/* [Hidden] */
$fn=50;
screw_radius = (screw_diameter+screw_hole_offset)/2;
screw_head_radius = screw_head_diameter / 2;

min_length = screw_head_diameter + 2;
min_width = screw_head_diameter + 2;

base_height = total_height - table_slot_height;

shoulder_width = (width - table_slot) / 2;

slider_length = max(length, min_length)- (2*edge_cylinder_radius);
slider_width = max(width, min_width);

module slider(length, width){
    // slider base
    translate([edge_cylinder_radius, 0, 0]) cube([slider_length, width, base_height] );

    // table slot
    translate([edge_cylinder_radius, shoulder_width, base_height]) cube([slider_length, table_slot, table_slot_height]);

    // lower edges
    translate([edge_cylinder_radius, edge_cylinder_radius, 0]) cylinder(base_height, r=edge_cylinder_radius);
    translate([edge_cylinder_radius, width-edge_cylinder_radius, 0]) cylinder(base_height, r=edge_cylinder_radius);
    translate([0, edge_cylinder_radius, 0]) cube([edge_cylinder_radius, width-(2*edge_cylinder_radius), base_height] );

    translate([edge_cylinder_radius+slider_length, edge_cylinder_radius, 0]) cylinder(base_height, r=edge_cylinder_radius);
    translate([edge_cylinder_radius+slider_length, width-edge_cylinder_radius, 0]) cylinder(base_height, r=edge_cylinder_radius);
    translate([edge_cylinder_radius+slider_length, edge_cylinder_radius, 0]) cube([edge_cylinder_radius, width-(2*edge_cylinder_radius), base_height] );

    // upper edges
    translate([edge_cylinder_radius, shoulder_width+edge_cylinder_radius, base_height]) cylinder(table_slot_height, r=edge_cylinder_radius);
    translate([edge_cylinder_radius, shoulder_width+table_slot-edge_cylinder_radius, base_height]) cylinder(table_slot_height, r=edge_cylinder_radius);

    translate([0, shoulder_width+edge_cylinder_radius, base_height]) cube([edge_cylinder_radius, table_slot-(2*edge_cylinder_radius), table_slot_height] );

    translate([edge_cylinder_radius+slider_length, shoulder_width+edge_cylinder_radius, base_height]) cylinder(table_slot_height, r=edge_cylinder_radius);
    translate([edge_cylinder_radius+slider_length, shoulder_width+table_slot-edge_cylinder_radius, base_height]) cylinder(table_slot_height, r=edge_cylinder_radius);
    translate([edge_cylinder_radius+slider_length, shoulder_width+edge_cylinder_radius, base_height]) cube([edge_cylinder_radius, table_slot-(2*edge_cylinder_radius), table_slot_height] );
}

module screw(x, y){
    *echo("x ", x, " y ", y);
    translate([x, y, -1]){

        if( screw_head_type == "hex" ){
            linear_extrude(screw_head_thickness+1){
                 circle(r=screw_head_radius, $fn=6);
            }
        }
        else {

            cylinder(h=screw_head_thickness+1, r1=screw_head_radius, r2=screw_radius, center=false);
        }
        cylinder(total_height+2, r=screw_radius );
    }
}

difference()
{
    screws = min(nr_of_screws, floor( length / screw_head_diameter) );
    ofs = ( length - ( screws * (screw_diameter+screw_hole_offset)) ) / ( screws * 2 );
    dis = ofs * 2;

    *echo("length = ", length);
    *echo("ofs = ", ofs);
    *echo("base_height = ", base_height);

    slider(slider_length, slider_width);

    if( add_screws == "yes" ) {
        for(i = [0: 1: screws-1]){
            screw(i*dis + (i*2*screw_radius) + ofs + screw_radius, width / 2);
        }
    }

}

```