[User]
I'd like a parametric OpenSCAD design for a lizard shape that can be used as a stamp or cookie cutter. I have an existing SCAD file that defines the basic shape using a bunch of `poly_path` modules to define different parts of the lizard, as well as an outer outline. I'd like a new parametric design that uses a different approach and allows the user to customize:

*   **Overall Size:** The overall length of the lizard from nose to tail.
*   **Wall Thickness:** The thickness of the walls of the stamp, with a separate value for the top width of the walls and the bottom width of internal walls.
*   **Wall Height:** The height of the main walls of the stamp.
*   **Base Thickness:** The thickness of the base of the stamp.
*   **Cookie Cutter Mode:** A setting to allow for a different height of the internal walls, that would be useful for cookie cutting. This mode should be a simple yes/no toggle and have a parameter for the inner wall height when the setting is yes.
*   **Show Tesselation:** A setting to show a sample of the lizard tesselated and offset from the main design. This should be a yes/no toggle and not meant to be printed.

The original file uses linear extrusion and hulling between cylinders to define the paths, but I'm open to different suggestions that would give better performance and allow for more precise customization.

I'd also like the design to be in the form of a single module called `lizard()` so that I can import it and use it. It would also be helpful to include some additional library functions to assist with path extrusion and scaling to make the main module cleaner.

The design uses the `morphology.scad` library from scad-utils. Please include the functionality of this library in the parametric design. I do not expect any provided files or functions from the library; instead, I am asking that the needed functions be part of the parametric design.

[Assistant]
lizards.scad:
```

// Generated from inkscape drawing I made.
// Designed to be pressed into the Sand at the beach
//  - to annoy and intrigue others...
// Author Neon22 Aug 2015

use<scad-utils/morphology.scad>;

// Added customizer so user can get better prints for narrow edge

/* [Escher Sand Lizard] */
// Nose to Tail length (mm).
Length = 200;
// Top width of the walls.
Maximum_wall_width = 3;
// Bottom width of internal walls.
Minimum_wall_width = 1;
// Height of the walls.
Wall_height = 10;
// Thickness of Base.
Base = 2.0;

/* [Cookie Mode] */
// Set to yes for different internal wall height. Ideal for impressing into cookies.
Cookie_mode = "yes"; // [yes, no]
// Inner wall height(from Base).
Inner_height = 5;

/* [Demo] */
// Show a sample tesselation (not for printing)
show_tesselated = "no"; // [yes, no]

/* [Hidden] */
Delta = 0.1;
profile_scale = 25.4/90; //made in inkscape in mm
s = Length / 97; // 97 is length of actual in mm
echo(s);
min_width = Minimum_wall_width / profile_scale / s /2; // div by 2 because cyl uses radius
max_width = Maximum_wall_width / profile_scale / s /2;
base_thick = Base;  // no scale in Z
wall = Wall_height; // no scale in Z
inner_walls = (Cookie_mode == "yes") ? Inner_height : wall;

//----------------------------------
path160667_0_points = [[-14.757721,-135.576404],[-1.242637,-136.877381]];

module poly_path160667(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160667_0_points)-2]) {
	hull() {
		translate(path160667_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160667_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160425_0_points = [[-39.592954,83.104360],[-42.442077,84.974252],[-46.978839,82.696328],[-52.591754,85.134578]];

module poly_path160425(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160425_0_points)-2]) {
	hull() {
		translate(path160425_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160425_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path1604089_0_points = [[-2.989029,120.425772],[-19.867162,112.978419]];

module poly_path1604089(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path1604089_0_points)-2]) {
	hull() {
		translate(path1604089_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path1604089_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160849_0_points = [[-50.463437,-99.834401],[-49.487217,-101.074993],[-48.843067,-102.377743],[-48.650019,-103.127400],[-48.607002,-103.915024],[-48.948715,-105.576327],[-49.720677,-107.233694],[-50.831135,-108.695631],[-52.188334,-109.770642],[-53.216425,-110.030843],[-54.390401,-110.155267],[-55.642467,-109.958234],[-56.904828,-109.254061]];

module poly_path160849(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160849_0_points)-2]) {
	hull() {
		translate(path160849_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160849_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path1604663_0_points = [[-7.292962,22.579327],[-0.092861,19.721129],[7.893046,17.918705]];

module poly_path1604663(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path1604663_0_points)-2]) {
	hull() {
		translate(path1604663_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path1604663_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160547_0_points = [[-170.937566,23.337573],[-165.221704,21.382910],[-162.028331,17.533342],[-158.347913,16.611957]];

module poly_path160547(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160547_0_points)-2]) {
	hull() {
		translate(path160547_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160547_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160625_0_points = [[13.294230,-95.653715],[31.769153,-97.765728]];

module poly_path160625(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160625_0_points)-2]) {
	hull() {
		translate(path160625_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160625_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160760_0_points = [[-81.014007,-79.788917],[-79.717153,-79.326967],[-76.448189,-77.825792],[-74.365540,-76.631437],[-72.139514,-75.112406],[-69.886660,-73.247076],[-67.723527,-71.013824],[-63.321245,-65.439583],[-58.609966,-58.728528],[-53.905926,-51.409236],[-49.525359,-44.010286],[-47.284507,-40.321182],[-44.818388,-36.738082],[-42.154250,-33.262752],[-39.319343,-29.896956],[-36.340913,-26.642459],[-33.246208,-23.501027],[-26.816968,-17.564415],[-20.249606,-12.101239],[-13.762104,-7.125620],[-7.572448,-2.651676],[-1.898620,1.306474],[2.942568,4.413461],[7.916319,7.213347],[13.007621,9.821527],[18.201465,12.353398],[28.836742,17.649792],[34.248154,20.645108],[39.702068,24.025698],[45.409511,28.000478],[52.796277,33.710399],[56.774214,37.088206],[60.757752,40.746403],[64.608815,44.633857],[68.189326,48.699436],[72.271675,53.889624],[75.554214,58.521579],[78.155916,62.699919],[80.195751,66.529262],[81.792688,70.114225],[83.065700,73.559426],[85.115825,80.449013],[86.068167,84.305250],[86.743962,87.894212],[87.172892,91.218448],[87.384637,94.280510],[87.408878,97.082949],[87.275295,99.628315],[86.653381,103.958032],[85.756340,107.290068],[84.821617,109.644828],[83.788905,111.504149],[85.213385,109.141160],[86.623441,106.396106],[88.169336,102.794174],[89.604040,98.474483],[90.202499,96.088954],[90.680524,93.576156],[91.007237,90.953479],[91.151759,88.238313],[91.083211,85.448048],[90.770715,82.600074],[90.171331,79.089844],[89.354529,75.304033],[88.220001,71.210245],[86.667435,66.776086],[84.596523,61.969161],[81.906955,56.757074],[78.498421,51.107431],[74.270611,44.987836],[70.510879,40.179018],[66.372118,35.422137],[61.980430,30.797180],[57.461919,26.384132],[52.942686,22.262981],[48.548835,18.513712],[44.406468,15.216312],[40.641687,12.450767],[29.500716,5.004711],[13.739479,-5.264977],[-1.353182,-15.093234],[-10.488425,-21.214998],[-17.773513,-26.699937],[-23.038923,-30.921924],[-28.901124,-35.908866],[-34.996274,-41.494720],[-40.960535,-47.513443],[-43.779882,-50.633241],[-46.430066,-53.798991],[-48.865607,-56.989937],[-51.041026,-60.185323],[-52.970045,-63.361164],[-54.703271,-66.492553],[-57.621716,-72.533422],[-59.875113,-78.130827],[-61.542210,-83.107663],[-62.701758,-87.286828],[-63.432507,-90.491216],[-63.922605,-93.267252]];

module poly_path160760(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160760_0_points)-2]) {
	hull() {
		translate(path160760_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160760_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160785_0_points = [[-92.648746,-69.531885],[-93.133751,-69.166013],[-94.547173,-68.492065],[-95.582545,-68.238159],[-96.826626,-68.145548],[-98.271619,-68.293670],[-99.909725,-68.761964],[-101.297051,-69.429082],[-102.579266,-70.336338],[-103.714365,-71.459882],[-104.660343,-72.775865],[-105.375195,-74.260439],[-105.816916,-75.889755],[-105.943501,-77.639963],[-105.712944,-79.487214],[-105.214741,-80.896345],[-104.473801,-82.057125],[-103.585416,-82.988193],[-102.644874,-83.708184],[-100.988482,-84.589483],[-100.266947,-84.850118]];

module poly_path160785(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160785_0_points)-2]) {
	hull() {
		translate(path160785_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160785_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160689_0_points = [[47.080797,-22.299485],[40.450495,-6.294261]];

module poly_path160689(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160689_0_points)-2]) {
	hull() {
		translate(path160689_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160689_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160863_0_points = [[165.575542,-47.632283],[151.860526,-47.147868]];

module poly_path160863(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160863_0_points)-2]) {
	hull() {
		translate(path160863_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160863_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160486_0_points = [[-62.311914,17.756211],[-70.686935,18.354789],[-82.736458,17.287999]];

module poly_path160486(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160486_0_points)-2]) {
	hull() {
		translate(path160486_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160486_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160566_0_points = [[-74.288234,-9.135780],[-66.791685,-16.590230],[-59.570458,-20.759407]];

module poly_path160566(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160566_0_points)-2]) {
	hull() {
		translate(path160566_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160566_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160584_0_points = [[-14.783953,-71.431303],[-22.082949,-65.270082],[-27.473920,-56.541075]];

module poly_path160584(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160584_0_points)-2]) {
	hull() {
		translate(path160584_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160584_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160748_0_points = [[-70.224929,-56.932508],[-75.445537,-58.331366],[-81.066340,-62.507980],[-91.837943,-66.920250],[-93.420102,-73.829807],[-100.495898,-85.390582],[-94.425876,-106.145834],[-94.560951,-112.286129],[-97.729823,-122.291390],[-97.858648,-127.031126]];

module poly_path160748(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160748_0_points)-2]) {
	hull() {
		translate(path160748_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160748_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160700_0_points = [[76.686029,17.411279],[68.025534,7.071385],[68.907813,-2.865706],[67.880872,-10.898186]];

module poly_path160700(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160700_0_points)-2]) {
	hull() {
		translate(path160700_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160700_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160644_0_points = [[-13.584421,-124.489895],[-2.650624,-124.029101],[2.957714,-122.653531]];

module poly_path160644(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160644_0_points)-2]) {
	hull() {
		translate(path160644_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160644_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160881_0_points = [[169.856490,-63.944572],[152.683767,-60.661528]];

module poly_path160881(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160881_0_points)-2]) {
	hull() {
		translate(path160881_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160881_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160505_0_points = [[-114.346566,22.274839],[-112.479155,30.046976]];

module poly_path160505(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160505_0_points)-2]) {
	hull() {
		translate(path160505_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160505_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160381_0_points = [[-3.779821,135.855627],[-20.400327,128.731661]];

module poly_path160381(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160381_0_points)-2]) {
	hull() {
		translate(path160381_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160381_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160725_0_points = [[-47.380980,-70.522653],[-48.449874,-83.144410],[-47.272964,-94.655772],[-59.183288,-112.853037],[-59.733949,-115.543969],[-76.442627,-117.732019],[-85.620038,-131.890603],[-88.560734,-134.204584]];

module poly_path160725(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160725_0_points)-2]) {
	hull() {
		translate(path160725_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160725_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160807_0_points = [[-93.402695,-73.324911],[-93.680866,-73.002527],[-94.503695,-72.299196],[-95.853659,-71.610654],[-96.720839,-71.395597],[-97.713231,-71.332636],[-99.240636,-71.577415],[-100.550014,-72.208641],[-101.635194,-73.272619],[-102.490000,-74.815652],[-102.863679,-76.399503],[-102.717102,-77.911385],[-102.107021,-79.265343],[-101.090191,-80.375426],[-99.950953,-81.071959],[-99.006278,-81.356958],[-98.123633,-81.378972]];

module poly_path160807(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160807_0_points)-2]) {
	hull() {
		translate(path160807_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160807_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160608_0_points = [[16.632548,-52.636792],[11.390071,-67.746200]];

module poly_path160608(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160608_0_points)-2]) {
	hull() {
		translate(path160608_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160608_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path1608212_0_points = [[-49.085342,-97.621188],[-48.650143,-97.873836],[-47.627873,-98.750520],[-47.029397,-99.478533],[-46.443526,-100.429346],[-45.923385,-101.625221],[-45.522097,-103.088422],[-45.456710,-103.922464],[-45.541095,-104.934487],[-46.087339,-107.237763],[-47.017152,-109.488824],[-47.580999,-110.435578],[-48.186859,-111.178242],[-49.469318,-112.109988],[-51.263384,-112.952790],[-53.270056,-113.552320],[-55.190335,-113.754249],[-56.766585,-113.527853],[-57.954933,-113.091756],[-58.966145,-112.476936]];

module poly_path1608212(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path1608212_0_points)-2]) {
	hull() {
		translate(path1608212_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path1608212_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160441_0_points = [[45.556079,51.536720],[39.998848,47.122788],[26.080423,47.335577],[21.421269,46.214317],[17.336072,48.171769],[13.695929,48.468055]];

module poly_path160441(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160441_0_points)-2]) {
	hull() {
		translate(path160441_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160441_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

path160526_0_points = [[-167.100850,41.181455],[-154.315026,31.935476],[-151.445814,27.871878]];

module poly_path160526(h,  res=4)  {
  scale([profile_scale, -profile_scale, 1])
  union()  {
for (t = [0: len(path160526_0_points)-2]) {
	hull() {
		translate(path160526_0_points[t])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
		translate(path160526_0_points[t + 1])
			cylinder(h=h, r1=min_width, r2=max_width, $fn=res);
	}
}
  }
}

// Outline
path15774652_0_points = [[73.929753,144.696176],[82.254324,100.824174],[64.584299,63.335242],[45.876012,51.728670],[7.652166,67.539909],[-11.700688,62.139889],[-39.420330,82.963655],[-1.986793,107.231339],[-4.285313,151.538655],[-36.137957,137.980356],[-41.131459,118.500754],[-73.946350,93.377227],[-73.237702,71.360545],[-49.670200,37.340302],[-7.281206,22.531359],[-61.979987,17.776606],[-72.890270,24.941765],[-89.461283,40.258989],[-97.136542,44.644910],[-103.647537,56.028776],[-141.140084,38.446215],[-150.706291,52.340501],[-165.868063,53.906723],[-168.160798,32.653460],[-172.722750,17.868302],[-169.678835,7.908877],[-167.211480,3.101965],[-114.399747,22.077552],[-74.399851,-8.964877],[-74.367981,-16.086147],[-72.944257,-26.801416],[-119.353220,-72.473375],[-103.120677,-135.762388],[-93.199693,-139.801582],[-86.788906,-143.418291],[-40.014146,-124.221152],[-30.023778,-69.074319],[-24.543495,-69.467418],[-14.638294,-71.569683],[-3.937652,-83.108442],[13.299787,-95.647752],[4.349328,-107.982875],[-12.517766,-109.371858],[-16.096242,-151.023692],[15.899871,-151.538655],[33.642555,-126.560946],[57.079392,-103.668890],[24.786402,-64.718428],[16.750336,-52.621171],[47.180053,-22.406067],[59.102959,-50.989820],[95.318214,-84.489978],[142.274964,-70.084646],[172.722750,-74.220816],[161.871611,-32.778022],[147.912710,-33.579991],[97.410153,-42.134461],[89.375082,-10.766862],[76.729494,17.504579],[99.602678,55.929613],[99.687848,64.968734],[104.676039,87.061180],[105.320954,99.898474],[73.929753,144.696176]];

module poly_path15774652(h, res=4)  {
	height = h+base_thick;
	scale([profile_scale, -profile_scale, 1])
	union()  {
		translate([0,0,h-Delta]) {
		linear_extrude(height=base_thick+Delta)
			polygon(path15774652_0_points);
		}
		for (t = [0: len(path15774652_0_points)-2]) {
			hull() {
				translate(path15774652_0_points[t])
					cylinder(h=height, r1=min_width, r2=max_width, $fn=res);
				translate(path15774652_0_points[t + 1])
					cylinder(h=height, r1=min_width, r2=max_width, $fn=res);
			}
		}
	}
}

module lizard() {
	union() {
		z_offset = (Cookie_mode == "yes") ? wall - Inner_height : 0;
		translate([0,0,z_offset]) {
			poly_path160667(inner_walls);
			poly_path160425(inner_walls);
			poly_path1604089(inner_walls);
			poly_path160849(inner_walls);
			poly_path1604663(inner_walls);
			poly_path160547(inner_walls);
			poly_path160625(inner_walls);
			poly_path160760(inner_walls);
			poly_path160785(inner_walls);
			poly_path160689(inner_walls);
			poly_path160863(inner_walls);
			poly_path160486(inner_walls);
			poly_path160566(inner_walls);
			poly_path160584(inner_walls);
			poly_path160748(inner_walls);
			poly_path160700(inner_walls);
			poly_path160644(inner_walls);
			poly_path160881(inner_walls);
			poly_path160505(inner_walls);
			poly_path160381(inner_walls);
			poly_path160725(inner_walls);
			poly_path160807(inner_walls);
			poly_path160608(inner_walls);
			poly_path1608212(inner_walls);
			poly_path160441(inner_walls);
			poly_path160526(inner_walls);
		}
		poly_path15774652(wall); //outline
	}
}

if (show_tesselated == "no") {
	scale([s,s,1])
	rotate([180,0,25])
	translate([0,0,-wall-base_thick])
		lizard();
} else {
	// tessellate example
	col = [[1,0,0], [1,1,0], [0,1,1] ];
	move = [[-27,-45,0],
			[-68.5,1.5,0],
			[-88,-57.5,0]
			];
	translate([Length/2, 0, 0])
	rotate([180,0,25])
	scale([s,s,1])
	for (i=[1:3]) {
		translate(move[i-1])
		rotate([0,0,i*120])
		color(col[i-1])
		lizard();
	}
}

```


[User]
I need a customizable hose tee designed in OpenSCAD. It should have three hose barb connectors, with two connectors forming a straight line and the third branching off at a 90-degree angle.

Here are the parameters I need to be able to control:

*   **Total Tee Length:** The overall length of the straight portion of the tee.
*   **Main Tee Diameter:** The outer diameter of the two main (straight-line) connectors.
*   **Main Tee Barb Height:** The height of the barbs on the main connectors.
*   **Main Tee Wall Thickness:** The thickness of the walls of the main connectors.
*   **Secondary Tee Diameter:** The outer diameter of the 90-degree branch connector.
*   **Secondary Tee Barb Height:** The height of the barbs on the 90-degree branch connector.
*   **Secondary Tee Wall Thickness:** The thickness of the walls of the 90-degree branch connector.

The barbs should be tapered, starting at the diameter of the main pipe and increasing to the diameter plus the barb height.  The barbs should start a short distance from the end of each connector, and there should be two barbs per connector.  I'd like this whole thing to be built from scratch; I'm not importing any modules or anything. I expect the result to be only a single `.scad` file.

[Assistant]
customizable_hose_tee.scad:
```
// Customizable Hose Tee

//Height of Tee
total_t_length=62;
//Diameter of main part of Tee
main_t_diameter=25.11;
//Height of barbs on Tee
main_t_barb_height=2;
//Wall thickness of main part of Tee
main_t_wall_thickness=3;

//Diameter of Tee portion of Tee
secondary_diameter=15.5;
//Height of barbs on Tee portion of Tee
secondary_barb_height=1.75;
//Wall thickness of Tee portion of Tee
secondary_wall_thickness=2.25;

difference() {
  union() {
    translate([0,0,total_t_length/2]){
      rotate(a=[0,180,0]){
        hose_barb(total_t_length/2, main_t_diameter, main_t_barb_height, main_t_wall_thickness);
      }
    }

    translate([0,0,-total_t_length/2]){
      rotate(a=[0,0,0]){
        hose_barb(total_t_length/2, main_t_diameter, main_t_barb_height, main_t_wall_thickness);
      }
    }
    translate([-(total_t_length/2 + main_t_diameter/2 - main_t_wall_thickness),0,0]){
      rotate(a=[0,90,0]){
        hose_barb(total_t_length/2, secondary_diameter, secondary_barb_height, secondary_wall_thickness);
      }
    }
  }
  rotate(a=[0,90,0]){
    translate([0,0,-total_t_length]){
      cylinder(h=total_t_length, d=secondary_diameter- (secondary_wall_thickness*2), $fn=48);
    }
  }
}

module hose_barb(height, diameter, barb_height, wall_thickness)
{
  end_barb_height = height - (height * 0.45);
  difference(){
    union(){
      cylinder(h=height,d=diameter,$fn=48);//pipe
      cylinder(h=end_barb_height/2,d1=diameter,d2=diameter+barb_height,$fn=48);//barb
      translate([0,0,end_barb_height/2]){
        cylinder(h=end_barb_height/2,d1=diameter,d2=diameter+barb_height,$fn=48);//barb
      }
    }
    cylinder(h=height,d=diameter - (wall_thickness*2),$fn=48);//hole
  }
}

```


[User]
Hey, I'm looking to create a customizable box with a lid, and I'd like it to be parametric so I can easily adjust its dimensions. I've seen some examples, but I want to specify my requirements.

Essentially, I'd like to control these aspects:

*   **Box Shape:** The base of the box should be a regular polygon, and I need to be able to specify how many sides it has (e.g., a square, hexagon, etc.)
*   **Box Dimensions:**
    *   Outer radius (the radius of the circle that encloses the polygon, as viewed from above).
    *   Wall thickness.
    *   Box height.
*   **Lid Dimensions:**
    *   Lid height.
    *   Lid lip depth (how far the lip goes into the box).
    *   Clearance between the lid and box walls.
*   **Output Control:**  I'd like to be able to choose if I want to generate both the box and the lid, just the box, or just the lid.
*   **Build Plate:** it would be useful if you could include a display of the build plate size, that can be set manually and with some defaults like Replicator 2.

I think I need a couple of files for this, one would be the main model, and I'll also need to use the `build_plate.scad` library to display the build plate.

Could you generate the OpenSCAD files for me?

[Assistant]
Parametric_Lidded_Box_v2.scad:
```
use <utils/build_plate.scad>

/* [Box And Lid] */

// Do you want to generate both box and lid?
objects_to_generate = 0; // [0:Box and lid,1:Box only,-1:Lid only]

// How wide should the box be? Imagine it being seen from above, and define the radius of the circle it should be contained into (in mm)
outer_radius = 30;

// How thick should the walls of the box be (in mm)? This number should be smaller that the Outer Radius and Box Height for the box to make sense.
wall_thickness = 4;

// How many sides should the box have? A very high number will produce a box that approximates a cylinder.
sides = 4;

// How tall should the box be (in mm)?  This number should be larger than the Wall Thickness for the box to make sense.
box_height = 30;

// How tall should the lid be (in mm)?
lid_height = 10;

// How much room should be left on all sides between the box and the lid, when the box is closed (in mm)?
lid_clearance = 0.4; //[0:0.1:1]

// How deep into the box should the lid lip sink (in mm)?
lid_lip_depth = 4;

/* [Build Plate] */

// display or hide the build plate
show_build_plate = 1; // [0:Hide,1:Show]

//for display only, doesn't contribute to final object
build_plate_selector = 3; //[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 = 140; //[100:400]
//when Build Plate Selector is set to "manual" this controls the build plate y dimension
build_plate_manual_y = 100; //[100:400]

/* [Hidden] */

doLid = false;
translation = outer_radius + 1;
doBox = false;

if (objects_to_generate >= 0) { // draw lid
    assign(doBox = true) {
        if (doBox == true) {

            translate([translation,0,0]) {
                difference() {
                    linear_extrude(height = box_height) {
                    circle(r = outer_radius, center=true, $fn = sides);
                    }
                    translate([0,0,wall_thickness]) {
                        linear_extrude(height = box_height) {
                        circle(r = outer_radius - wall_thickness, center=true, $fn = sides);
                        }
                    }
                }
            }
        }
    }
}

if (objects_to_generate <= 0) { // draw lid
    assign(doLid = true) {
        if(doLid == true) {
            translate([-translation,0,0]) {
                difference() {
                    union() {
                        linear_extrude(height = lid_height) {
                        circle(r = outer_radius, center=true, $fn = sides);
                        }
                        linear_extrude(height = lid_height + lid_lip_depth) {
                        circle(r = outer_radius - (wall_thickness + lid_clearance), center=true, $fn = sides);
                        }
                    }
                    translate([0,0,wall_thickness]) {
                        linear_extrude(height = lid_height + lid_lip_depth) {
                        circle(r = outer_radius - (wall_thickness *2), center=true, $fn = sides);
                        }
                    }
                }
            }
        }
    }
}

if (show_build_plate == 1) {
build_plate(build_plate_selector,build_plate_manual_x,build_plate_manual_y);
}

```


[User]
Hey, I'm looking to design a customizable phone mount that can connect to a standard tripod. I want it to be parametric, so I can easily adjust it for different phone sizes. The basic idea is to have a clip that holds the phone, connected to a ball joint, which is then connected to a tripod.

Here's a breakdown of what I'm thinking:

*   **Phone Clip:** This part needs to have adjustable width and height to fit various phone sizes. It should essentially be a rectangular cutout within a slightly larger rectangle, with a small lip on either side to hold the phone securely. I'd like the thickness of the clip to be a parameter, too.
*   **Ball Joint:** This will be a standard sphere with a flattened section on one side for easier printing. It should be connected to the phone clip using an arm. The diameter of the ball should be adjustable.
*   **Arm:** This part will connect the clip to the ball. I would like the length of this arm to be parameterized.
*   **Tripod Connection:** This is a little simpler. I just want a ball with the same diameter as the ball joint, but with a standard 1/4"-20 threaded hole for a tripod mount.

I'm pretty familiar with OpenSCAD, so I'm hoping you can generate the code for these parts, ideally in separate modules or files so that they're easy to reuse. It would be awesome if the code included some documentation or comments explaining what each parameter does. I'd really like to make this as clean and parametric as possible so it can be shared with others.

I think we can just use standard OpenSCAD primitives. I don't think I need any external libraries, but I'd like to keep the code simple and not have a lot of dependencies.

[Assistant]
customizable-phone-clip.scad:
```
/* [Device Size] */

// Device width (mm)
phone_width = 60;

// Device height (mm)
phone_height = 9;

/* [Hidden] */

clip_length = 20;
clip_thickness = 3;
ball_diameter = 25;
arm_length = 7;

module clip() {
    width = phone_width + clip_thickness * 2;
    height = phone_height + clip_thickness * 2;

    difference() {
		cube([width, height, clip_length]);

		translate([clip_thickness, clip_thickness, -1])
		cube([phone_width, phone_height, clip_length + 2]);

		translate([clip_thickness * 2, clip_thickness + phone_height - 1, -1])
		cube([phone_width - (clip_thickness * 2), clip_thickness + 2, clip_length + 2]);
	}
}

module ball() {
	ball_x = 0 - (ball_diameter/2) - arm_length;
	ball_y = clip_thickness + phone_height/2;
	difference() {
		translate([ball_x, ball_y, clip_length/2])
		sphere(d=ball_diameter, $fn=60);

		// flatten one side of ball for easy printing
		translate([ball_x, ball_y, -ball_diameter/2])
		cube([ball_diameter, ball_diameter, ball_diameter], center=true);
	}
}

module arm() {
	translate([0, clip_thickness + phone_height/2, clip_length/2])
	rotate([0, -90, 0])
	union() {
		translate([0, 0, arm_length]) cylinder(d=9, h=ball_diameter/2);
		cylinder(d1=min(phone_height + clip_thickness * 2, clip_length), d2=9, h=arm_length);
	}
}

ball();
arm();
clip();
```


[User]
I need a cable holder designed in OpenSCAD that can clamp onto a shelf. I have a basic idea in mind, but I want it to be fully parametric so I can easily adjust it for different shelf thicknesses, cable sizes, and so on.

Here are the key features I'm looking for:

*   **Clamp Design:** It should have a "C" shaped clamp that grips the shelf from above and below. I need to be able to adjust the shelf thickness the clamp is designed for.
*   **Cable Routing:** The holder should have multiple circular channels to hold cables. I'd like to be able to specify the number of channels, the diameter of the cables, and the spacing between the channels.
*   **Adjustable Dimensions:** I need to be able to easily adjust the overall width of the holder, the length that extends past the shelf, and the wall thickness of the plastic.
*   **Parametric Design:** All these variables (shelf thickness, cable diameter, spacing, number of channels, wall thickness, width, length) should be able to be set at the beginning of the file as variables.

I'd prefer for the cable channels to be created by subtracting cylinders from a main block, and for each channel to have a small rectangular cutout that makes it easier to insert or remove a cable, like a "keyhole". I think that will be easier to print.

I don't need any crazy features, just a functional and printable cable holder. I think that's everything. Let me know what you can do!

[Assistant]
kabelklemmetje.scad:
```
shelfThickness = 20; //Thickness of the shelf (mm)
wallThickness = 3; //Wall thickness of the cable holder (mm)
width = 16; //Width of the cable holder (mm)
length = 25; //Lengt of the cable holder over the shelf(mm)
cableThickness = 5; //The diameter of the cable to be held (mm)
seperation = 1.2*cableThickness;
$fn = 2*25;

translate([0,0,width]){
    rotate([-90,0,0]){
        cube([length,width,wallThickness]);

        translate([0,0,wallThickness]){
            cube([wallThickness,width,shelfThickness]);
        }
        translate([0,0,wallThickness+shelfThickness]){
            cube([length,width,wallThickness]);
        }

        depth = 4 * cableThickness;
        difference(){
            difference(){
                translate([-depth,0,0]){
                    cube([depth,width,wallThickness]);
                }
                translate([-1.5 * cableThickness, width / 2, -1]){
                      cylinder(wallThickness +2, 0.75*cableThickness, 0.75*cableThickness);
                }
            }
            translate([(-1.5 * cableThickness)-(0.55*cableThickness),-1,-1]){
                 cube([1.1*cableThickness,
                (((width)/2)+2),
                wallThickness +2]);
            }
        }
        if (1*seperation+2*wallThickness <= shelfThickness + 2*wallThickness){
            difference(){
                difference(){
                    translate([-depth,0,wallThickness+(seperation)]){
                        cube([depth,width,wallThickness]);
                    }
                    translate([-1.5 * cableThickness, width / 2,wallThickness+(seperation)-1]){
                          cylinder(wallThickness +2, 0.75*cableThickness, 0.75*cableThickness);
                    }
                }
                translate([(-1.5 * cableThickness)-(0.55*cableThickness),(width/2),wallThickness+(seperation)-1]){
                     cube([1.1*cableThickness,
                    (((width)/2)+1),
                    wallThickness +2]);
                }
            }
        }
        if (2*seperation+3*wallThickness <= shelfThickness + 2*wallThickness){
            difference(){
                difference(){
                    translate([-depth,0,2*(wallThickness+(seperation))]){
                        cube([depth,width,wallThickness]);
                    }
                    translate([-1.5 * cableThickness, width / 2, (2*(wallThickness+(seperation)))-1]){
                          cylinder(wallThickness +2, 0.75*cableThickness, 0.75*cableThickness);
                    }
                }
                translate([(-1.5 * cableThickness)-(0.55*cableThickness),-1,(2*(wallThickness+(seperation)))-1]){
                     cube([1.1*cableThickness,
                    ((width/2)+2),
                    wallThickness +2]);
                }
            }
        }
    }

}
```


[User]
I'm working on expanding my ThinkFun sets, and I've come up with a way to use standard drinking straws as rods. I have an existing OpenSCAD file called `ThinkFunStrawInsert.scad`, but I want to make it much more flexible and allow me to customize more aspects of the design. I also need to create a second design, an extender, that will let me connect two of these inserts.

Here's the basic idea:

First, I need an "insert" that will hold the straw. The straw I'm using is about 8mm in diameter, but I'd like the design to handle various straw sizes, and also allow different depths to be specified for how deep the straw goes.  I also need a small lip or flange on the insert so that it won't fall through the connecting piece.  So, let's start there:

I need a parametric OpenSCAD file for this straw insert that takes the following parameters:

*   `straw_diameter`: The outer diameter of the straw to be inserted.
*   `insert_depth`: The depth to which the straw will be inserted.
*   `flange_thickness`: The thickness of the flange, basically the small lip above the straw hole.
*   `flange_overhang`: How far the flange extends outwards, from the edge of the straw insert.
* `tolerance`: A small value (e.g., 0.1-0.2mm) to add to diameters to allow for printing differences.
    *  `insert_outer_diameter`: the diameter of the portion below the flange - this will also be useful for mating with the extender.

Second, I need an "extender" piece, that will let me connect two of the inserts end-to-end. This should have openings on both ends to accept the "insert" design. The extender will be a hollow cylinder, with two circular openings. Here are the parameters for the extender:

*   `extender_length`: The overall length of the extender.
*   `insert_outer_diameter`: The outer diameter of the insert (use the parameter from the insert file).
*   `extender_outer_diameter`: the overall diameter of the extender.
*   `tolerance`: A small value (e.g., 0.1-0.2mm) to add to diameters to allow for printing differences.
 *  `insert_depth`: The depth the insert should go into the extender. This should allow to accommodate variation from insert_depth variable from the insert file.

I'd like to keep the design clean and simple, no fancy shapes required. I'd also prefer to use standard OpenSCAD code, no need for external libraries. Please create these two files. The insert should be named `straw_insert.scad` and the extender `extender.scad`.

[Assistant]
ThinkFunStrawInsert.scad:
```
//StrawInsert for ThinkFun
//Default values are for IKEA Sommarfint straws

// variable description
StrawD=7.9;
StrawInsert=20;
WheelD=7.5;
WheelInsert=20;

linear_extrude(height=StrawInsert)
    circle (r=StrawD/2, $fn=200);

translate ([0,0,StrawInsert])
linear_extrude (height=2)
    circle (r=(StrawD/2)+1, $fn=200);

translate ([0,0,StrawInsert+2])
linear_extrude(height=WheelInsert)
    circle (r=WheelD/2, $fn=200);

```


[User]
Hey, I need help designing a modular whiteboard tray system. I've got a whiteboard with a channel frame that I want to attach a tray to, and I want to make it expandable so I can add sections as needed.

The tray should have a main section that has a flat bottom and a T-shaped rail along the back that will slide into the whiteboard frame's channel. I'd like to be able to adjust the dimensions of the main section, like its length, width, and thickness. The T-rail should also have adjustable dimensions for width, height, undercut depth and height, and offset from the back of the tray. Basically, I need to be able to tweak all those T rail measurements based on my frame.

The main section should also have a couple of features. On the front I need a lip to keep things from sliding off, and on the top, I want a little raised pen divider thing. It should also have holes for pins on each end and in the middle to connect to other sections. Finally, I'd like a series of small cutout cylinders on the bottom to save on material.

I also need two kinds of end pieces. A left end and a right end. These end pieces will have the same T-rail as the main sections, and a wall on the outside to close off the end of the tray. They should also have pin holes.

Finally, I need pins. They should be cylindrical and their diameter should be adjustable.

All the parts should be held together with pins, so the holes on the parts should be a little bit bigger than the pins to account for printing tolerances.  I think there might be some way to add a parameter to do that, but I don't know what it would be called.

I'd like the whole thing to be parametric, so I can adjust the different dimensions to fit different whiteboards, and different printers. I guess that means all measurements should be in millimeters.

I'd like the code to be well documented, and easy to read. I prefer to not use any external libraries. I think the basic stuff can all be done with standard OpenSCAD modules. So I don't think you should use any of MCAD, BOSL, BOSL2, dotSCAD, NopSCADlib, or BOLTS. I also don't think it should be necessary to use the `hull()` or `minkowski()` operators.

Could you create the OpenSCAD files for this?  I think it would be good to have modules for each individual part, and then another module that draws a complete tray using all the others.

[Assistant]
whiteBoardTray.scad:
```
// Released under the Creative Commons: Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) license.
// http://creativecommons.org/licenses/by-sa/3.0/
// Attribution may be made by linking to:  http://www.thingiverse.com/thing:1037034

//Choose to render all parts or specific parts.
part="all"; // [tray:Main Tray,lend:Left End,rend:Right End,pins:Pins,all:All]

//All measurements in mm unless otherwise indicated. Length of the main tray
trayLength=140;

//Width of the tray.
trayWidth=55;

//Thickness of the tray.
trayThickness=4;

//Width of the catch rail from tip to tip along the X axis.  See diagram in the thing page if this is not clear.
railWidth=10.6;

//Height of the catch rail from the top surface of the tray to the top top.  See diagram in the thing page if this is not clear.
railHeight=4.1;

//Depth of the rail undercut -- creates a 90 degree overhang, so don't make this too big.  See diagram in the thing page if this is not clear.
railUndercutX=2;

//Height of the rail undercut -- make this at least 1mm shorter than the total height.  A smaller number here makes the overhanging rails thicker.  See diagram in the thing page if this is not clear.
railUndercutZ=3.1;

//Distance from the back side of the tray to offset the entire catch rail.  See diagram in the thing page if this is not clear.
railOffset=2.71;

//Pin Diameter (for example, 3mm or 1.75mm would let you just cut up some filament - make each piece about 8-9 mm long).  You can also print the pins.
pinDiameter=3;

//This will add an adjustment to pinholes (but not to pins) to account for side ooze from your nozzle.  Your nozzle diameter is a good starting point.  You can also use this variable to tighten or loosen the fitment of pins (larger numbers loosen, smaller numbers (even negative) tighten by shrinking or enlarging the pinholes).  NOTE:  this is not applied to pins to make it possible to cut pins from filament.  If you want to enlarge pins to take into account ooze, you must do that in the pinDiameter variable.
oozeAdjustment=0.45;

/* [Hidden] */
// preview[view:south west]

$fn=100;
pinRadius=pinDiameter/2;
oozeRadius=oozeAdjustment/2;

finalAssembly();

module finalAssembly()
{
	if (part=="tray")
	{
		union()
		{
			//tray base
			difference()
			{
				union()
				{
					tray(trayWidth,trayLength,trayThickness);
					slide(trayWidth, trayLength, trayThickness, railWidth, railHeight, railUndercutX, railUndercutZ, railOffset);
				}

				union()
				{
					trayPinCuts(trayWidth, -1,trayThickness);
					trayPinCuts(trayWidth, trayLength-5,trayThickness);
					trayBottomCuts(trayWidth, trayLength, trayThickness);
				}
			}

		}
	} else if (part=="lend")
	{
		leftEnd(trayWidth, trayThickness+10, trayThickness);
	} else if (part=="rend")
	{
		rightEnd(trayWidth, trayThickness+10, trayThickness);
	} else if (part=="pins")
	{
		pins();
	} else if (part=="all")
	{
		union()
		{
			//tray base
			difference()
			{
				union()
				{
					tray(trayWidth,trayLength,trayThickness);
					slide(trayWidth, trayLength, trayThickness, railWidth, railHeight, railUndercutX, railUndercutZ, railOffset);
				}

				union()
				{
					trayPinCuts(trayWidth, -1,trayThickness);
					trayPinCuts(trayWidth, trayLength-5,trayThickness);
					if(trayThickness>=3)
					{
						trayBottomCuts(trayWidth, trayLength, trayThickness, 2);

					} else if (trayThickness>=2 && trayThickness<3)
					{
						trayBottomCuts(trayWidth, trayLength, trayThickness, 1);
					}
				}
			}

		}

		rightEnd(trayWidth, trayThickness+10, trayThickness);
		leftEnd(trayWidth, trayThickness+10, trayThickness);
		pins();
	} else
	{
		cylinder(r=10, h=10);
		echo ("==================================================================");
		echo ("Error -- you must select all, tray, lend, rend, or pins.          ");
		echo ("==================================================================");
	}
}

//********************************************************************************************
//--------------------------------TRAY PART

module tray(tW, tL, tT)
{
	//Basic tray parts
	union() //trayWidth, trayLength, trayThickness
	{
		//base
		cube([tW,tL,tT]);

		//lip
		translate([(-3*tT)+(tT/1.5),0,(4*tT)-(tT/2)]) rotate([-90,0,0]) cylinder(h=tL, r=tT);

		//pen divider, pin hole beefer
		translate([(tW*0.4),0,tT/3*2.6]) rotate([-90,0,0]) cylinder(h=tL, r=tT/3*2.5);

		//curved front, quarter section of cylinder
		difference()
		{
			translate([0,0,(3*tT)]) rotate([-90,0,0]) cylinder(h=tL, r=3*tT);
			translate([0,-1,(3*tT)]) rotate([-90,0,0]) cylinder(h=tL+2, r=2*tT);
			translate([0,-1,tT]) cube([6*tT+1,tL+2,6*tT+1]);
			translate([-6*tT,-1,3*tT]) cube([6*tT+1,tL+2,6*tT+1]);
		}
	}
}

module slide(tW, tL, tT, rW, rH, rX, rZ, rO)
{
	difference()
	{
		translate([tW-rO-rW,0,tT-1]) cube([rW,tL,rH+1]);
		translate([tW-rO-rW-1,-1,tT]) cube([rX+1,tL+2,rZ]);
		translate([tW-rO-rX,-1,tT]) cube([rX+2,tL+2,rZ]);
	}
}

module trayPinCuts(tW, yPos, tT)
{
	union()
	{
		//frontPinHole
		translate([(-3*tT)+(tT/1.5),yPos,(4*tT)-(tT/2)]) rotate([-90,0,0]) cylinder(h=6, r=pinRadius+oozeRadius);

		//middlePinHole
		 translate([(tW*0.4),yPos,tT/3*2.3]) rotate([-90,0,0]) cylinder(h=6, r=pinRadius+oozeRadius);

		//backPinHole
		translate([tW-railOffset-railWidth+(railWidth/2),yPos,tT/3*2.3]) rotate([-90,0,0])  cylinder(h=6, r=pinRadius+oozeRadius);
	}
}

module trayBottomCuts(tW, tL, tT, cutRadius)
{
	for (i=[10:10:tL-10])
	{
		translate([tW+1, i, 0]) rotate([0,-90,0]) cylinder(h=tW+(3*tT)+2, r=cutRadius);
	}
}

module rightEnd(tW, tL, tT)
{
	difference()
	{
		union()
		{
			translate([0,-(tT+11),0]) tray(tW, tL, tT);
			translate([0,-(tT+11),0]) slide(tW, tL, tT, railWidth, railHeight, railUndercutX, railUndercutZ, railOffset);
			translate([0,-(tT+11),0]) endWall(tW, 3*tT, tT);
		}
		trayPinCuts(trayWidth, -6,trayThickness);
	}
}

module leftEnd(tW, tL, tT)
{
	difference()
	{
		union()
		{
			//note we need to use global trayLength here rather than the different lenght passed to this module here
			//because we need to move the piece on Y to the other end of the main tray.
			translate([0,(trayLength+1),0]) tray(tW, tT+10, tT);
			translate([0,(trayLength+1),0]) slide(tW, tT+10, tT, railWidth, railHeight, railUndercutX, railUndercutZ, railOffset);
			translate([0,(trayLength+11),0]) endWall(tW, 3*tT, tT);
		}
		trayPinCuts(tW,trayLength,tT);
	}
}

module endWallB(tW, tL, tT)
{

	difference()
	{
		union()
		{
			cube([tW-railOffset-railWidth-(tW/8),tT,4*tT]);
			translate([0,0,(3*tT)]) rotate([-90,0,0]) cylinder(h=tT, r=3*tT);
		}
		translate([-(3*tT)-1,-1,4*tT]) cube([tW,tL+2,3*tT]);

	}
}

module endWall(tW, tL, tT)
{
	hull()
	{
		translate([tW*0.6,0,(3*tT)]) rotate([-90,0,0]) cylinder(h=tT, r=tT);
		translate([tW*0.6,0,tT]) rotate([-90,0,0]) cylinder(h=tT, r=tT);

		difference()
		{
			translate([0,0,(3*tT)]) rotate([-90,0,0]) cylinder(h=tT, r=3*tT);
			translate([-(3*tT)-1,-1,4*tT]) cube([tW,tL+2,3*tT]);
		}
	}
}

module pins()
{

	for (i=[0:3*pinRadius:18*pinRadius-1])
	{
		translate([-trayWidth/2,i,0]) cylinder(h=8, r=pinRadius);
	}
}
```


[User]
Hi, I'm looking to design a parametric swivel mount for a bowden extruder, similar to the one described in the text. I need a design that can accommodate NEMA 14, 17, and 23 stepper motors, and I want to be able to adjust the total height of the mount and the base plate thickness. It should use bearings to allow the extruder to swivel freely.

Specifically, I need two main parts: the mount itself and a bearing spacer. The mount should have a base plate that attaches to the stepper motor, a cylindrical body that houses the bearings, and a curved transition between the base plate and cylinder. The bearing spacer should fit between the two bearings inside the mount. The design should use a bolt pattern for mounting to the stepper, and the bolt hole diameters and countersink depths should also be customizable within reason.

I would like to be able to adjust a fudge factor to change the inner diameter for the bearings, which can help to account for printing tolerances. I also want to be able to specify the bearing width and diameter as variables.

The design should be parametric, meaning that I can adjust all of the dimensions using variables at the top of the code. I'm not sure if it will help, but it is okay to assume all dimensions are in millimeters.  I am hoping to be able to print this out of PLA or ABS - I'm not looking for any specific material properties in the design.

I'm using OpenSCAD, and I'm familiar with using libraries if you think that will make this easier. I’m not looking to use any specific library, but I am happy to include any that you think will be useful for this project, such as BOSL or BOSL2.

[Assistant]
swivel_mount_for_bowden_extruders.scad:
```
// Justfalter's Swivel Mount for Bowden Extruders
// Mike Ryan (falter@gmail.com)
// Creative Commons Sharealike Attribution license 4.0:
//  https://creativecommons.org/licenses/by-sa/4.0/
//
// revision 1 - 2015-09-26

/* [Global] */

part="mount"; // [mount:Mount,spacer:Bearing Spacer]

mount_type="NEMA 17"; // [NEMA 14,NEMA 17,NEMA 23]

// In millimeters:
base_plate_thickness=4; // [3:0.1:5]
// Height from the bottom of the base to the top of the mount, in millimeters:
total_height=30;  // [22:0.1:50]

// Amount to add to the inner-diameter of the mount. Increase to give more room for the bearings, decrease to tighten things up.
fudge=0.0; // [-2:0.1:2]

/* [Hidden] */

BEARING_DIA = 22.4+fudge;
BEARING_WIDTH=7;

SPACE_FOR_BOLT_HEAD=7;
BEARING_SPACING=total_height-2*BEARING_WIDTH-SPACE_FOR_BOLT_HEAD;

$fn = 36;

print_part();

module print_part() {
  if (part == "mount") {
    print_mount();
  } else if (part == "spacer") {
    spacer();
  } else {
    print_mount();
  }
}

module print_mount() {
  // Main body of the mount:
  if(mount_type=="NEMA 17") {
    mount(31,31,3,2,6);
  } else if (mount_type=="NEMA 14") {
    mount(26,26,2.5,2,5);
  } else if (mount_type=="NEMA 23") {
    mount(47.1,47.1,5,0,0);
  } else {
    echo("ERROR: UNKNOWN MOUNT TYPE");
  }
}

module boltHolePattern(hole_x,hole_y) {
  xOffset = hole_x/2;
  yOffset = hole_y/2;
  for(i=[-xOffset,xOffset]) {
    for(j=[-yOffset,yOffset]) {
      translate([i,j,0]) children();
    }
  }
}

module boundingBox(hole_dia,hole_x,hole_y) {
  hull() boltHolePattern(hole_x,hole_y) {
    cylinder(d=hole_dia+8,h=total_height);
  }
}

module mount(hole_x,hole_y,hole_dia,hole_cs_depth,hole_cs_dia) {
  wallThickness = 2;
  outerDia = BEARING_DIA+3*wallThickness;
  difference() {
    union() {
      hull() boltHolePattern(hole_x,hole_y) {
        cylinder(d=hole_dia+8,h=base_plate_thickness);
      }
      translate([0,0,base_plate_thickness]) {
        cylinder(d=outerDia, h=total_height-base_plate_thickness);
      }

      // Curve at base
      intersection() {
        translate([0,0,base_plate_thickness]) difference() {
          v = 6.5;
          cylinder(d=outerDia+2*v, h=v);
          translate([0,0,v]) rotate_extrude() {
            translate([outerDia/2+v,0,0]) circle(r=v);
          }
        }
        boundingBox(hole_dia,hole_x,hole_y);
      }
    }

    // Main through hole.
    translate([0,0,0]) cylinder(
        d=BEARING_DIA-4,
        h=total_height);

    spacer_bottom = total_height - BEARING_WIDTH - BEARING_SPACING;

    // tapered bottom
    translate([0,0,0]) cylinder(d1=BEARING_DIA+1, d2=BEARING_DIA,
      h=spacer_bottom-BEARING_WIDTH);
    translate([0,0,0]) cylinder(
      d=BEARING_DIA,
      h=spacer_bottom
    );

    // top bearing
    translate([0,0,total_height-BEARING_WIDTH]) {
      cylinder(d=BEARING_DIA, h=BEARING_WIDTH+1);
    }
    translate([0,0,total_height-1]) {
      cylinder(d2=BEARING_DIA+1,d1=BEARING_DIA, h=2);
    }

    translate([0,0,0]) boltHolePattern(hole_x,hole_y) {
      cylinder(d=hole_dia,h=10);
      if (hole_cs_depth > 0) {
        translate([0,0,base_plate_thickness - hole_cs_depth]) cylinder(d=hole_cs_dia,h=10);
      }
    }
  }

}

module spacer() {
  d = 8.3;
  difference() {
    cylinder(h=BEARING_SPACING,d=d+4);
    translate([0,0,-1]) cylinder(h=BEARING_SPACING+2,d=d);
  }
}

```


[User]
Hi, I'm looking for an OpenSCAD design for a customizable vial holder, similar to the one I already have but more robust. I want to be able to change the vial diameter, the gap between vials, the total number of vials (which will always be in a square grid), and the height of the holder.

The basic structure is a solid cube with cylindrical holes cut out to hold the vials. I'd like to parameterize the vial diameter, the gap between the vials, the number of vials in total (again, always a perfect square like 9 or 16, etc.) and the overall height of the holder. I'm hoping you can generate the code, I don't really understand how to make it work. Thanks!

[Assistant]
vial-holder.scad:
```
$fn = 60;

//Diameter of the vials to be held.
vial_diameter = 14.5; //[1:0.1:100]
//Gap or wall between the vials
vial_gap = 2.5; //[1:0.1:100]
//number of vials to hold -- square root of this number must be a whole number
number_of_vials = 9; //[1:100]
//the overall height of the holder
holder_height = 30; //[1:100]

difference() {
    cube([vial_diameter*sqrt(number_of_vials)+vial_gap*sqrt(number_of_vials)+vial_gap, vial_diameter*sqrt(number_of_vials)+vial_gap*sqrt(number_of_vials)+vial_gap, holder_height]);
    for (x=[1:sqrt(number_of_vials)], y=[1:sqrt(number_of_vials)]) {
        translate([-vial_diameter/2, -vial_diameter/2, 0]) {
            translate([(vial_diameter*x)+(vial_gap*x),(vial_diameter*y)+(vial_gap*y),4]) {
                color("purple") cylinder(r=vial_diameter/2, h=holder_height);
            }
        }
    }
}

```


[User]
Hey there, I'm looking to design a fully parametric omni-wheel for a robot project. I've got some specific ideas in mind, and I need your help to generate the OpenSCAD code. I want the wheel to be constructed with a central frame and a set of smaller, freely rotating subwheels around its circumference.

Here's a breakdown of what I'm envisioning:

**Main Wheel Parameters:**

*   **Number of Subwheels:** I want this to be a customizable value, say, `num_subwheels`. It needs to be a round number since there should be equal spacing.
*   **Wheel Radius:**  I need to set the overall radius of the omni-wheel, which I'll call `wheel_radius`.
*   **Axis Diameter:** The main wheel needs a central hole for mounting onto an axis. This needs to be adjustable, using `axis_diameter`.
*   **Axis Connector Height:** I need to set a height for a cylinder that connects the main axis and wheel, `axis_connector_height`.
*   **Axis Connector Thickness:** I want to adjust the thickness of the connector between the axis and wheel, this would be `axis_connector_thickness`.

**Subwheel Parameters:**

*   **Subwheel Base Size:** This is the size of the subwheels at their smallest point (the edge), use `subwheel_base_size`.
*  **Subwheel Play:** This is space added to the subwheels to prevent tight movement, I want to call it `subwheel_play`.
*   **Subwheel Overlap:** I want to be able to set an angle to determine how much the wheels overlap to make rotation smoother. Name this one `subwheel_overlap_angle`.
*   **Subwheel Axis Diameter:**  Each subwheel needs a hole for its own rotation axis, adjustable with `subwheel_axis_diameter`. I also want some play here
*   **Subwheel Axis Play:** That play I mentioned, yeah name it `subwheel_axis_play`.

**Connector Parameters:**

*   **Connector Radius:** The radius of the connectors between the frame and subwheels. I need the value to be a bit smaller than the subwheel itself, use `connector_radius`.
*   **Connector Thickness:** Adjustable thickness of the connectors, name it `connector_thickness`.
*   **Connector Play:** Space for smooth connector movement. This one should be named `connector_play`.

**Frame Parameters:**

*   **Frame Radius:** The radius of the main frame cylinder, set this using `frame_radius`.
*   **Frame Height:** The height of the main frame, name it `frame_height`.
*   **Frame Thickness:** Adjustable thickness for the frame, use `frame_thickness`.

**Stability Beam Parameters:**

*   **Beam Thickness:** The thickness of beams inside the wheel for structural support, call it `beam_thickness`.
*   **Number of Beams:** Adjustable amount of beams inside the wheel, name it `num_beams`.

**Connector (Vertical) Parameters:**

*   **Vertical Connector Thickness:** Thickness of the vertical connectors between the two wheel pieces, name this `connector_v_thickness`.
*  **Vertical Connector Inward Shift:** Inward shift of the vertical connectors, named `connector_v_inshift`.
*   **Vertical Connector Height:** Height of the vertical connectors above the main frame, use `connector_v_height`.
*   **Number of Vertical Connectors:** I want to set how many of these vertical connectors are created, named `num_v_connectors`.

**Overall Structure:**
I need the code to generate the following:
*   A main frame with a central cylinder and connection points for the subwheels.
*   Individual subwheels that are shaped like arcs of a larger circle.
*   Connectors linking the subwheels to the frame, allowing them to spin freely.
*   Vertical connection points to join two halves of the omniwheel.
*   Structural beams inside the main frame to provide stability.
*   The model should be parametric, so all the above variables can be used to change the model.

Ideally, I'd like the design to be constructed such that the subwheels are positioned around the edge of the main wheel radius, and that they overlap slightly. This overlap should be controlled by `subwheel_overlap_angle`.  Also, I need to have an option to render just the subwheel itself, in the case that I'd like to test print it. I'd like to set this with a variable named `generate`. If `generate` equals 1, I'd like to render the main wheel, and if it is equal to 2, I'd like to generate the subwheel only.

I'm not too familiar with advanced libraries, so the code should be vanilla OpenSCAD, please. The design needs to be accurate to the given parameters, since I'd like to print it, so please make sure that no values will overlap if they shouldn't, and that all dimensions work together logically.

I believe that should give you all the necessary information. Let me know if you need any more details!

[Assistant]
OmniWheel.scad:
```
/*
	.scad file created for the subwheel system of the 3D Printable Omni-Wheels used for a robot.

	Author 	= Xasin
	Website = https://www.github.com/xasin/hexa-bot.git
	Created	= 17.09.15
*/

function subwheelRadius(n, r) = r - cos(360/(2*n) + subwheelOverlap)*r + subwheelBaseSize;		//Calculate the radius of a standard subwheel at largest point (Center)
function wheelOffset(n, r) = cos(360/(2*n) + subwheelOverlap)*r;						//Calculate the offset of a subwheel that is required to shift it so that it aligns with the main circle (CAUTION Does not implement subwheel size shift!!)
function connectorOffset(n, r) = (sin(360/(2*n) + subwheelOverlap)*r);					//Calculate the offset for the cuts on the wheels. (Y axis on the 2D model of a subwheel before being rotated.

$fs = 1;

//What to generate - 1 means base frame, 2 means subwheel piece
generate = 1;

//GENERATION VARIABLES
//Number of all subwheels to create. (Has to be a round number!!)
num = 5*2;
//Radius of the omni-wheel.
radius = 30;

//CONNECTION AXIS VARIABLES
//Diameter of the axis the Omni-Wheel will be connected to.
axisDiameter = 3;
//Height of the cylinder that will connect axis and omniwheel together.
axisConnectorHeight = 3;
//Thickness of the axis connector.
axisConnectorThickness = 0.8;

//SUBWHEEL VARIABLES
//Size of the subwheels at their smallest point (The edge)
subwheelBaseSize = 3.5;
//The additional size that will be cut out around the subwheels to ensure smooth movement
subwheelPlay = 1;
//By what angle should the wheels overlap? This should result in smoother running, but at the same time might cause problems if this value is too big.
subwheelOverlap = 1;

//SUBWHEEL AXIS HOLE VARIABLE
subwheelAxisDiameter = 1.75;
subwheelAxisPlay = 0.4;

//SUBWHEEL CONNECTOR VARIABLES
//Radius of the connectors to the subwheels (Best is slightly smaller than the subwheel.
cRad = subwheelAxisDiameter/2 + 1.5;
//Thickness of the connectors.
cThick = 0.8;
//Play room for the connector ports (distance to the subwheel)
cPlay = 0.3;

//FRAME VARIABLES
//frameRadius = connectorOffset(num, radius) + cPlay + cThick;
//Radius of the frame Cylinder
frameRadius = 15;
//Height of the frame (not including the connectors
frameHeight = cRad + subwheelRadius(num, radius);
//Thickness of the main frame
frameThickness = 0.8;

//STABILITY BEAM VARIABLES
//Thickness of the stability beams
beamThickness = 2.5;
//How many beams should be created?
beamNum = 5;

//CONNECTOR VARIABLES
//Thickness of the vertical connectors
connectorThickness = 0.8;
//Inwards shift of the vertical connector beams (for smoother connection)
connectorInShift = 0.2;
//Height of the connector pieces above the main frame.
connectorHeight = 2.5;
//How many connectors should be created
connectorNum = 4;

module shine(angle=10, length=10, height=10, center=true) {
    if($children != 0) {
        intersection() {
            linear_extrude(height) {
                if(center) {
                    polygon([[0,0] , [length*cos(angle/2),length*sin(angle/2)] , [length,0] , [length*cos(-angle/2),length*sin(-angle/2)]]);
                }
                else {
                    polygon([[0,0] , [length*cos(angle),length*sin(angle)] ,  [length*cos(angle/2),length*sin(angle/2)] , [length,0]]);
                }
            }
            children();
        }
    }
    else {
        linear_extrude(height) {
            if(center) {
                polygon([[0,0] , [length*cos(angle/2),length*sin(angle/2)] , [length,0] , [length*cos(-angle/2),length*sin(-angle/2)]]);
            }
            else {
                polygon([[0,0] , [length*cos(angle),length*sin(angle)] ,  [length*cos(angle/2),length*sin(angle/2)] , [length,0]]);
            }
        }
    }
}

module subwheelBase(n, r=20, p=0, shift = subwheelBaseSize, split=true, positioned=true) {  //The base structure of a Subwheel, basically a slice of a circle of the radius of the wheel, cut down to be rotated into a proper subwheel for a wheel of Radius R with N Subwheels.

	//Position the wheel according to the given parameters (Aling it to the outside of the main wheel and rotate it around into position p.)
	render(4) if(positioned) {
		//Rotate to the according outside position.
		rotate([0, 0, (360/n) * p])
		//Translate to the edge of the circle
		translate([ wheelOffset(n, r) - shift, 0, 0])
		//Rotate into horizontal position
		rotate([-90, 0, 0])
		//The main core of the subwheel
		subwheelBase(n, r, p, shift, split, false);
	}
	//Generate a standard subwheel without moving it around.
	else {
		render(convexity=4) difference() {				//Render the subwheel and make it hollow.
			union() {
				rotate_extrude() difference() {		//Generate the main subwheel
					intersection() {					//2D Model for the basic subwheel
						translate([ - wheelOffset(n, r) + shift, 0]) circle(r=r, $fn = 70);		//Main circle
						translate([0, - sin(360/(2*n) + subwheelOverlap)*r]) square(sin(360/(2*n) + subwheelOverlap)*r *2);			//Intersecting square to only have the desired part of the circle
					}

				}
				translate([0, 0, - sin(360/(2*n) + subwheelOverlap)*r]) cylinder(r=shift, h= sin(360/(2*n) + subwheelOverlap)*r *2);	//Central cylinder inside for the axis.
			}

			if(split) {
				translate([0,0,-(sin(360/(2*n) + subwheelOverlap)*r)]) cylinder(d= subwheelAxisDiameter + subwheelAxisPlay, h= 2* sin(360/(2*n) + subwheelOverlap)*r,$fn=15);	//Slot for the Filament-Axis, rolling
			}
		}
	}
}

//Create the connecting beams for the subwheels
module subwheelConnector(n, r, i) {
	render(convexity = 3)
	rotate([0,0, (360/n)*i])
	difference() {				//The difference cuts the hole for the axis into the connectors
		intersection() {		//The intersection makes sure that the subwheel connectors don't poke outside of the wheel radius. This should not be nececary, but for smaller subwheel base sizes might be desirable.
			union() {		//The cylinders here are the end cylinders on either side of the connector, the cubes are the beams that connect those cylinders to the main frame.
				translate([wheelOffset(n, r) - subwheelBaseSize, connectorOffset(n, r) + cPlay + cThick]) rotate([90, 0, 0]) cylinder(r= cRad, h= cThick, $fn = 13);

				translate([0, connectorOffset(n, r) + cPlay, -cRad])
					cube([wheelOffset(n, r) - subwheelBaseSize, cThick, cRad*2]);

				translate([wheelOffset(n, r) - subwheelBaseSize, -connectorOffset(n, r) - cPlay]) rotate([90, 0, 0]) cylinder(r= cRad, h= cThick, $fn = 13);

				translate([0, -connectorOffset(n, r) - cPlay - cThick, -cRad])
					cube([wheelOffset(n, r) - subwheelBaseSize, cThick, cRad*2]);
			}

			translate([0,0, -cRad]) cylinder(r=r - 0.3, h= cRad*2);
		}

		translate([wheelOffset(n, r) - subwheelBaseSize, connectorOffset(n, r) + 5, 0]) rotate([90,0,0]) cylinder(d= subwheelAxisDiameter + 0.3, h= connectorOffset(n, r)*2 + 10, $fn=14);		//Cylinder for the axis hole.
	}
}

//Create a set of subwheels as they would be normally positioned. Inflated = true makes them bigger; useful for creating space around the wheels.
module subwheelSet(n, r, inflated=false) {
	for(i=[0:2:n]) {
		if(inflated) {
			subwheelBase(n, r, i, shift = subwheelBaseSize + subwheelPlay, split=false);									//Create a /bigger/ subwheel in normal, ground position.
		}
		else {
			subwheelBase(n, r, i);									//Do the same as above, however using default subwheels instead of bigger subwheels here.
		}
	}
}

//Create a subwheel connector set for the according wheel of size r with n subwheels.
module connectorSet(n, r) {
	for(i=[0:2:n]) {
		subwheelConnector(n, r, i);
	}
}

//Create the central cylinder piece.
module centralCylinder(n, r) {
	render(convexity = 4) translate([0,0, - cRad]) difference() {
		cylinder(r= frameRadius, h= frameHeight);		//Create the central cylinder.
		cylinder(r= frameRadius - frameThickness, h= frameHeight);	//Hollow it out
	}
}

//Create the pieces that connect the two Omniwheel pieces together
module interconnectorPiece(r) {
	difference() {
		shine(height= frameHeight + connectorHeight, angle=(360/connectorNum/2) - 0.5, length= r)
		//"Shine" is a custom function that cuts down an object to a specific angle
		union() {
			cylinder(r= frameRadius - 0.1, h= frameHeight);		//Cylinder piece to connect the connector to the main frame.
			cylinder(r= frameRadius - frameThickness - connectorInShift, h= frameHeight + connectorHeight);		//Cylinder piece for the actual interconnector. This one is slightly smaller due to printing imperfections, thusly making sure that the pieces fit together nicely.
		}
		cylinder(r= frameRadius - frameThickness - connectorThickness - connectorInShift, h= frameHeight + connectorHeight);		//Hollow the interconnection pieces out so that they have the correct thickness.

	}
}
//Create the interconnections between two wheel pieces
module interconnections(n, r) {
	render(convexity= 2) translate([0,0, -cRad])
		for(i=[0:(360/connectorNum):360])
			rotate([0,0, i + 360/connectorNum])
			interconnectorPiece(r);
}

//Create the structural beams inside the subwheel for better stability.
module structuralBeams() {
	render(convexity = 4) translate([0,0, -cRad]) intersection() {
		cylinder(r= frameRadius, h= cRad*2);		//Make sure that the structural beams don't poke out of the main frame.

		for(i=[0:360/beamNum:360])
			rotate([0,0, i + 360/beamNum/2]) translate([0, -beamThickness/2, 0]) cube([frameRadius, beamThickness, 1]);		//Create the beams.
	}
}

//The Mainframe of the OmniWheel
module omniWheel(n, r, subwheels = false) {
	difference() {
		union() {

			//Central Cylinder
			centralCylinder(n, r);

			//Cylinder Interconnections
			interconnections(n, r);

			//Structural beams
			structuralBeams();

			//Connectors
			render(convexity = 5) difference() {
				connectorSet(n, r);			//Create the connectors
				translate([0,0, -cRad]) cylinder(r= frameRadius - 0.001, h= frameHeight); //Make sure they don't enter the central cylinder
			}

			translate([0,0, -cRad]) cylinder(d= axisDiameter + 2* axisConnectorThickness, h= axisConnectorHeight);
		}
		subwheelSet(n, r, true); 	//Make sure that there is enough space for the subwheels.
		translate([0,0, -cRad]) cylinder(d= axisDiameter, h= frameHeight);
	}

	%subwheelSet(n, r);		//Create subwheels around the model for a better visual inspection.
}

if(generate == 1) {
	omniWheel(num, radius, true);
}
else if(generate == 2) {
	subwheelBase(num, radius, positioned=false);
}
```


[User]
Hey, I'm looking to design a parametric atomizer case for storing vaping atomizers. I have a rough idea of the design and dimensions I want, and I think it would be best implemented as an OpenSCAD project.

Essentially, the case consists of two parts: a base and a top. The base should be a cylindrical cup, with a slightly smaller diameter cylinder cut out from the interior to provide a snug fit for the atomizer. I would also like a small post hole cut out from the bottom of the base to support an atomizer post.

The top part should similarly be a cylindrical shape, sized to slide over the base. The interior of the top piece should have a cavity that matches the exterior profile of the base so the two pieces fit together. The inside of the top should have a slightly raised cylinder on the top to provide added depth.

Here are the initial parameters I'm thinking of:

*   **`atomizerRadius`**: The radius of the atomizer to be stored. I'll set this to 10mm initially.
*   **`atomizerHeight`**: The height of the atomizer. Let's say 50mm initially.

Based on these, I want the case to have the following derived parameters:

*   **`atomizerDiameter`**: Simply `atomizerRadius * 2`
*   **`caseRadius`**:  `atomizerRadius + 7` This will give a bit of wall thickness to the case.
*   **`caseHeight`**:  `atomizerHeight + 10`
*   **`baseHeight`**: `caseHeight / 4`
*   **`topHeight`**: `caseHeight - 5`

I'm aiming for a smooth look so let's use `$fn = 100` to specify that level of detail.

Can you generate OpenSCAD code for this? I'd like the code to include modules for each of the features (base, top, posthole), and have those called in the main render section. Also, I would appreciate having the derived parameter be calculated within the code, rather than being hard-coded. I think it'd be useful if the code were organized such that the base is rendered offset from the top. I'm not asking for any specific library usage this time, just pure vanilla OpenSCAD.

[Assistant]
atomizer_case.scad:
```
///////////////////////////////////////////////
// Title:  Parametric Atomizer Case
// Author: Gotsanity
// Date:   9/26/15
///////////////////////////////////////////////
//                Params                     //
///////////////////////////////////////////////

// Radius of the Atomizer
atomizerRadius = 10;

// Height of the Atomizer
atomizerHeight = 50;

// Don't Edit these
atomizerDiameter = atomizerRadius*2;
caseRadius = atomizerRadius+7;
caseHeight = atomizerHeight+10;
baseHeight = caseHeight/4;
topHeight = caseHeight-5;
$fn = 100;

///////////////////////////////////////////////
//                Renders                    //
///////////////////////////////////////////////
translate([caseRadius+30, 0, 0]){
    base();
}
top();

///////////////////////////////////////////////
//                Modules                    //
///////////////////////////////////////////////

module base() {
    difference(){
        cylinder(baseHeight, caseRadius, caseRadius);
        translate([0,0,7]){
            cylinder(baseHeight-2, caseRadius-3, caseRadius-3);
        }
        translate([0,0,5]){
            difference(){
                cylinder(baseHeight-4, caseRadius+1, caseRadius+1);
                cylinder(baseHeight-4, caseRadius-2, caseRadius-2);
            }
        }
        translate ([0,0,1]){
            postHole();
        }
    }
}

module top() {
    difference(){
        cylinder(topHeight, caseRadius, caseRadius);
        translate([0,0,5]){
            cylinder(topHeight, caseRadius-2, caseRadius-2);
        }
        translate([0,0,topHeight+5-baseHeight]){
            cylinder(baseHeight-4, caseRadius-1, caseRadius-1);
        }
    }
}

module postHole() {
    cylinder(7,3.5,3.5);
}
```


[User]
Hey, I'm looking to design a slim, customizable spool holder for my 3D printer filament. I want it to be able to fit inside my filament storage container, so keeping the profile low is key. I'd like it to handle standard spools, which are about 60mm wide.

Here's the general idea I have:

*   **Axis:** It should have a central axis for the spool to rotate on. This axis can optionally accommodate a bearing (15mm outer diameter, 10mm inner diameter, 4mm thick - these should be parameters). It should work fine without a bearing, too.
*   **Mount:** The axis should be supported by a mount stand. This stand should be relatively low profile and can be screwed onto a surface.
*   **Parametric:** I want all dimensions to be parametric so I can easily adjust things like the axis diameter, spool width, mount stand dimensions, and bearing size.
*   **Rounded Edges:** The mount stand should have rounded corners, not sharp ones.

I'm thinking it should be a pretty simple design overall, but I’d like the OpenSCAD code to be well-structured and easy to modify. I'd like to be able to control the following parameters:

*   `axis_d`: Diameter of the axis.
*   `axis_h`: Total height of the axis.
*   `container_h`: Total height of the axis container.
*   `container_od`: Outer diameter of the axis container.
*   `container_id`: Inner diameter of the axis container.
*   `bearing_d`: Diameter of the bearing clearance.
*  `bearing_h`: Depth of the bearing clearance.
*   `mount_w`: Width of the mount stand.
*   `mount_l`: Length of the mount stand.
*   `mount_h`: Height of the mount stand.
*   `mount_r`: Rounding radius of the mount stand corners.
*   `mount_axis_z`: Vertical distance from the bottom of the mount stand to the center of the axis.
*  `mount_plate_h`: Height of an optional mounting plate.
*  `mount_plate_d`: Diameter of an optional mounting plate.
*  `mount_nose_h`: Height of the optional mounting plate nose.
*  `mount_nose_od`: Outer Diameter of the optional mounting plate nose.
*  `mount_nose_id`: Inner Diameter of the optional mounting plate nose.

Could you generate the necessary OpenSCAD file(s) to achieve this? I am _not_ using any external libraries like MCAD, BOSL, or any other. Everything should be defined directly in my provided OpenSCAD file(s). Please ensure it renders well with the preview function and consider common 3D printing tolerances when creating clearances for bearings and the axis. I think I'd like to have the code make use of modules wherever appropriate to help keep things clean.

[Assistant]
spool_holder_v3.scad:
```
$fn=150;

// Diameter of the axis (mm)
axis_d = 10;

// Total height of the axis (mm)
axis_h = 68;

// Total height of the axis container (mm)
container_h = 65.5;

// Outer diameter of the axis container (mm)
container_od = 20;

// Inner diameter of the axis container (mm)
container_id = 10.5;

// Diameter of the clearing for bearings (on both ends) (mm)
bearing_d = 15;

// Depth of the clearing (mm)
bearing_h = 4.5;

// Width of the mount stand (mm)
mount_w = 70.5;

// Length of the mount stand (mm)
mount_l = 160;

// Height of the mount stand (mm)
mount_h = 30;

// Rounding radius of the mount stand (mm)
mount_r = 2;

// Distance of the center of the axis cutout from the bottom of mount stand (mm)
mount_axis_z = 19;

// Height of the mount plate (mm)
mount_plate_h = 2;

// Diameter of the mount plate (mm)
mount_plate_d = 25;

// Height of the mount plate nose (mm)
mount_nose_h = (axis_h - container_h) / 2 - 0.5;

// Outer diameter of the mount plate nose (mm)
mount_nose_od = axis_d + 5;

// Inner diameter of the mount plate nose (mm)
mount_nose_id = axis_d + 0.5;

module outeraxis() {
	difference() {
		cylinder(h = container_h, r = container_od/2);
		translate([0,0,-.02]) cylinder(h = bearing_h, r = bearing_d/2);
		translate([0,0,container_h-bearing_h+.02]) cylinder(h = bearing_h, r = bearing_d/2);
		cylinder(h = container_h, r = container_id/2);
	}
}

module axis() {
	cylinder(h = axis_h, r = axis_d/2);
}

module roundedRect(size, radius) {
	x = size[0]-radius; y = size[1]-radius; z = size[2];
	linear_extrude(height=z)
	hull() {
		// place 4 circles in the corners, with the given radius
		translate([(-x/2)+(radius/2), (-y/2)+(radius/2), 0])
		circle(r=radius);

		translate([(x/2)-(radius/2), (-y/2)+(radius/2), 0])
		circle(r=radius);

		translate([(-x/2)+(radius/2), (y/2)-(radius/2), 0])
		circle(r=radius);

		translate([(x/2)-(radius/2), (y/2)-(radius/2), 0])
		circle(r=radius);
	}
}

module mount() {
	clearing_l = mount_l + 0.5;
	clearing_w = container_h + 0.2;
	clearing_h = mount_h;

	midclear_w = container_h;
	midclear_l = mount_l*0.7;
	midclear_r = 20;

	axis_y = (mount_w-axis_h)/2;
	cut_r = container_od/2+0.2;
	cut_h = container_h+1;

	difference() {
		// Basic shape;
		translate([0,mount_w/2,mount_h/2]) rotate([90,0,90])
			roundedRect(size = [mount_w,mount_h,mount_l], radius = mount_r);
		translate([-0.1,clearing_w/2+(mount_w-clearing_w)/2,clearing_h/2+mount_r])
			rotate([90,0,90])
			roundedRect(size = [clearing_w,clearing_h,clearing_l], radius = mount_r);
		translate([mount_l/2,mount_w+0.1,mount_l*1.1+16]) rotate([90,0,0])
			cylinder(h = mount_w+0.5, r = mount_l*1.1);

		// Axis cutouts.
		translate([container_od/2,axis_h+axis_y,mount_axis_z])
			rotate([90,0,0])
			cylinder(h = axis_h+0.2, r = axis_d/2+0.2);
		translate([mount_l-container_od/2,axis_h+axis_y,mount_axis_z])
			rotate([90,0,0])
			cylinder(h = axis_h+0.2, r = axis_d/2+0.2);

		// Outer axis cutouts.
		translate([cut_r,cut_h+(mount_w-cut_h)/2,mount_axis_z])
			rotate([90,0,0])
			difference() {
				cylinder(h = cut_h, r = cut_r);
				cylinder(h = cut_h+0.2, r = bearing_d/2-0.1);
			}
		translate([mount_l-cut_r,cut_h+(mount_w-cut_h)/2,mount_axis_z])
			rotate([90,0,0])
			difference() {
				cylinder(h = cut_h, r = cut_r);
				cylinder(h = cut_h+0.2, r = bearing_d/2-0.1);
			}

		// One large cutout...
		translate([midclear_l/2+(mount_l-midclear_l)/2,midclear_w/2+(mount_w-midclear_w)/2,-0.1])
			roundedRect(size = [midclear_l,midclear_w,mount_h], radius = midclear_r);

		// ...or two smaller ones.
		//translate([midclear_l/4+(mount_l-midclear_l)/2-5,midclear_w/2+(mount_w-midclear_w)/2,-0.1])
		//	roundedRect(size = [midclear_l/2,midclear_w,mount_h], radius = midclear_r);
		//translate([midclear_l/4+mount_l/2+5,midclear_w/2+(mount_w-midclear_w)/2,-0.1])
		//	roundedRect(size = [midclear_l/2,midclear_w,mount_h], radius = midclear_r);
	}
}

module mountplate() {
	union() {
		cylinder(h = mount_plate_h, r = mount_plate_d/2);
		difference() {
			cylinder(h = mount_nose_h + mount_plate_h, r = mount_nose_od/2);
			translate([0,0,mount_plate_h+.005])
				cylinder(h = mount_nose_h, r = mount_nose_id/2);
			translate([3,-mount_nose_od/2,mount_plate_h+.005])
				cube(size = [mount_nose_od/2,mount_nose_od,mount_nose_h]);
		}
	}
}

translate([container_od/2,0,0]) outeraxis();
translate([container_od*1.5+4,0,0]) outeraxis();

translate([mount_l/2 + axis_d/2 + 2,0,0]) axis();
translate([mount_l/2 - axis_d/2 - 2,0,0]) axis();

//translate([mount_l - mount_plate_d/2,0,0]) mountplate();
//translate([mount_l - mount_plate_d - 4 - mount_plate_d/2,0,0]) mountplate();

translate([0,mount_plate_d/2+4,0])
mount();

```


[User]
I need a parametric OpenSCAD design for a mount that sits on top of a Naze32 flight controller and holds a FrSky D4R-II receiver. I've got a few specific requirements, and ideally, I'd like the design to be flexible enough that I can adjust things easily.

First, the base of the mount needs to have the same mounting hole pattern as a Naze32. I'd like the holes to be clearance holes for M3 screws, and the base needs to be a flat rectangle that the Naze can sit on. The dimensions should match a standard Naze32.

Then, on top of the base, I need a housing for the D4R-II receiver. It should be a simple box with a top, and the dimensions should be adjustable to fit the receiver snugly. It should have a raised "lip" on the sides. I need the ability to adjust the wall thickness of this box as well.

Finally, I need antenna mounts that come out from the front of the receiver housing at roughly 45-degree angles. These should be tubes, also adjustable in length, outer diameter, and inner diameter. I need the ability to specify the angle of the antenna tubes, and they should be pointing outwards to the sides from the main body of the receiver housing.

I would also like the option to add cutout sections on the left and right sides of the base, if I want to use them. The size of these cutouts should be adjustable parameters.

Essentially, I'd like to be able to adjust all the key dimensions - Naze base size, D4R-II box size, antenna tube lengths, diameters, and angles, cutout sizes for the base etc. It would be super handy if this was easy to tweak.

Also, could you please use the BOSL2 library, it's really helpful for this kind of thing, I find. Specifically, `rounded_cube` would be useful, but please also make sure that the `hull` function works correctly if you choose to use it, I've had issues before with that.

[Assistant]
D4R-II_Naze.scad:
```
/*
D4R-II top mount for Naze (c) by Jorge Monteiro

D4R-II top mount for Naze is licensed under a
Creative Commons Attribution-ShareAlike 4.0 International.

You should have received a copy of the license along with this
work.  If not, see <http://creativecommons.org/licenses/by-sa/4.0/>.
*/

$fn = 40;
// Naze
nazeDimension = 36;
nazeBaseThickness = 1.2;
nazeHoleToHoleDistance = 30.5;
nazeHoleSize = 3;
// Side slot size
nazeLeftSideOpenning = 0;
nazeRightSideOpenning = 0;
// frsky antenna
antennaLength = 20;
antennaOuter = 3;
antennaInner = 1.85;
// frsky
frskyWidth = 25;
frskyLength = 31;
frskyTopWidth = 8;
frskyTopHeight = 10;
frskySideWidth = 1;
frskySideBarHeight = 9;

nazeBaseWithGaps();
frskyBase();

module frskyBase() {
    difference() {
        union() {
            difference() {
                union() {
                    translate([(nazeDimension-frskyTopWidth)/2,frskyWidth/2-frskySideWidth,0]) rotate([0,0,90]) cube([frskySideWidth,frskyLength,frskySideBarHeight]);
                    translate([(nazeDimension-frskyTopWidth)/2,-frskyWidth/2,0]) rotate([0,0,90]) cube([frskySideWidth,frskyLength,frskySideBarHeight]);
                    translate([-nazeDimension/2,-frskyWidth/2,0]) cube([frskyTopWidth,frskyWidth,frskyTopHeight]);
                };
                // subtract both antenna tubes
                translate([-14,-3,3]) rotate([45, 0, 0]) cylinder(antennaLength, antennaOuter, antennaOuter);
                translate([-14,3,3]) rotate([-45, 0, 0]) cylinder(antennaLength, antennaOuter, antennaOuter);

            };
            // Now draw the antenna tubes
            translate([-14,-3,3]){
                rotate([45, 0, 0]){
                    drawTube(antennaLength, antennaOuter, antennaInner);
                };
            };
            translate([-14,3,3]){
                rotate([-45, 0, 0]){
                    drawTube(antennaLength, antennaOuter, antennaInner);
                };
            };

        };
        translate([-14, -6.3, 6]) rotate([0,90,0]) cylinder(400, antennaInner, antennaInner);
        translate([-14, 6.3, 6]) rotate([0,90,0]) cylinder(400, antennaInner, antennaInner);
    };
};

module nazeBaseWithGaps() {
    gap = nazeDimension - frskyWidth;
    difference() {
        nazeBase();
        if (nazeLeftSideOpenning > 0)
            translate([0, -(frskyWidth+gap)/2, 0]) roundedCube(nazeLeftSideOpenning, gap, nazeBaseThickness, 3);
        if (nazeRightSideOpenning > 0)
            translate([0, (frskyWidth+gap)/2, 0]) roundedCube(nazeRightSideOpenning, gap, nazeBaseThickness, 3);
    };
};

module nazeBase() {
    difference() {
        roundedCube(nazeDimension,nazeDimension,nazeBaseThickness,3);
        union(){
            translate([nazeHoleToHoleDistance/2,nazeHoleToHoleDistance/2,0]) {
                cylinder(nazeBaseThickness, d=nazeHoleSize);
            };
            translate([-nazeHoleToHoleDistance/2,nazeHoleToHoleDistance/2,0]) {
                cylinder(nazeBaseThickness, d=nazeHoleSize);
            };
            translate([-nazeHoleToHoleDistance/2,-nazeHoleToHoleDistance/2,0]) {
                cylinder(nazeBaseThickness, d=nazeHoleSize);
            };
            translate([nazeHoleToHoleDistance/2,-nazeHoleToHoleDistance/2,0]) {
                cylinder(nazeBaseThickness, d=nazeHoleSize);
            };
        };
    };
};

//roundedCube(36,36,1.2,3);
module roundedCube(xdim, ydim, zdim, rdim) {
    translate([-xdim/2,-ydim/2,0]){
        hull(){
            translate([rdim,rdim,0]) cylinder(r=rdim, h=zdim);
            translate([xdim-rdim,rdim,0]) cylinder(r=rdim, h=zdim);

            translate([rdim,ydim-rdim,0]) cylinder(r=rdim, h=zdim);
            translate([xdim-rdim,ydim-rdim,0]) cylinder(r=rdim, h=zdim);

        };
    };
};

module drawTube(distance, outer, inner) {
    difference() {
        cylinder(distance, outer, outer);
        cylinder(distance, inner, inner);
    };
};

module drawTubeWithHole(distance, outer, inner) {
    difference() {
        drawTube(distance, outer, inner);
        translate([0,0,2]) rotate([0, 90, 0]) cylinder(distance, inner, inner);
    };
};

```


[User]
I need a replacement battery cover for my OMRON blood pressure monitor. I have a model BP755-CD6, but it looks like it's also compatible with models HEM-700-Z4CS and HEM-780N2 and probably a few others. I'd like the design to be parametric in OpenSCAD, so I can easily tweak it if needed.

The cover is roughly rectangular, about 71mm wide, 65mm high, and 2mm thick. I need to cut out a couple of recessed grip areas on the back - these look like a series of rectangular extrusions that get cut out to make little ridges to help with gripping the cover. There's also a latching mechanism; this part is kind of complex. It looks like there are two small rectangular tabs that extend out on one side to latch into the device. On the opposite side, there's a notch with a small angled cut away that helps the user pull the cover off, again on the opposite side.  It needs to have the same dimensions and function as the original.

Ideally, I'd like the ability to add some personalized text - like my name and address - to the face of the cover. It would need to be embossed, and be able to customize the name and address. I'd like it to use the Arial Bold font. I think it would also be useful if I could turn this personalization on or off, so I can easily make a generic one too.

[Assistant]
battery-cover.scad:
```
/* [Global] */

Personalize = "no"; // [yes,no]
Name = "Somebody";
Address = "Somewhere";

/* [Hidden] */

h = 65;
w = 71;
t = 2;

module cover() {
	difference() {
		cube([w,h,t]);

		for (i=[5:2:15]) {
			translate([w-i-10, h/2-(20-i)/2, 2-.4])
				cube([1,20-i,.4]);
		}

		if (Personalize == "yes") {
			translate([w-40, h-32, 2-.4])
				rotate([0,0,-90])
				linear_extrude(height = .4)
					text( "Property of",
						font = "Arial:style=Bold",
								size=4,
								$fn=20,
								valign="center",
								halign = "center"
							);

			translate([w-50, h-32, 2-.4])
				rotate([0,0,-90])
				linear_extrude(height = .4)
					text( Name,
						font = "Arial:style=Bold",
								size=4,
								$fn=20,
								valign="center",
								halign = "center"
							);
			translate([w-60, h-32, 2-.4])
				rotate([0,0,-90])
				linear_extrude(height = .4)
					text( Address,
						font = "Arial:style=Bold",
								size=4,
								$fn=20,
								valign="center",
								halign = "center"
							);
		}
	}
	translate([0,-.8,0])
		cube([14,.8,1.4]);

	translate([13,-.8,-2])
		cube([5.4,2.4,2]);

	translate([0,h,0])
		cube([14,.8,1.4]);

	translate([13,h-1.6,-2])
		cube([5.4,2.4,2]);

	translate([w-1,h/2-15/2,-1.4])
		cube([6,15,1]);

	difference() {
		translate([w+4,h/2-15/2,-1.4])
			cube([2,15,2]);

		translate([w+4+.2,h/2-15/2-.5,1])
		rotate([0,45,0])
			cube([4,16,2]);
	}

	difference() {
		translate([w-2,h/2-15/2,-1.4])
			cube([2,15,2]);

		translate([w-3.8,h/2-15/2-.5,-1.8])
			rotate([0,45,0])
				cube([2.8,16,2]);
	}
}

rotate([0,180,0])
	translate([0,0,-2])
		cover();

```