[User]
Okay, I need to design a tolerance test for my 3D printer, similar to the one I saw on Maker's Muse. I want it to have several cylinders with rods inside them, each with a different clearance. I'd like to be able to specify the clearances I want to test.

Here's what I need:

*   **Clearances:** I want to be able to define a list of clearances (in millimeters) to test. For example, I might want to test 0.05mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm, and 0.3mm.
*   **Two Modes:** I need two options for the layout:
    *   **Single:** All the tests are connected in a circle around a central piece (like a wheel).
    *   **Multi:** Each test is a separate unit, arranged side-by-side (or in a row, I guess).
*   **Text Labels:** Each test should have a label indicating the clearance being tested. The labels should be extruded text on the rotor part, nothing fancy.
*   **Screwdriver Slot:** Each rotor should have a screwdriver slot at the bottom to help break it free if it's stuck. I need to be able to control the dimensions of this slot (length, width, depth).
*   **Dimensions:** I need some control over the overall dimensions, like the outer diameter of the stators, the rotor diameters (base and center), and the overall height of the part.
*   **Smoothness:** I need to be able to control the `$fn` value for smoothness.
*   **Optional crosscut:** For debugging, I want the ability to add an optional plane that cuts across the entire model at a custom angle, allowing me to view a cross-section.
*   **No libraries:** I'd prefer to keep it basic, without using libraries like MCAD.

I think that's it. Can you generate the OpenSCAD code for this?

[Assistant]
tolerance_test.scad:
```
// Customizeable tolerance test for 3D printers.
// Inspired by Maker's Muse video https://youtu.be/TYuLVN3YHw8

// Up to 7 clearances to test.
clearances = [0.5, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35];

mode = "single"; // [single:One connected model,multi:One part per clearance test]

text_depth = 0.8;
text_size = 4.0;

text_font = "Helvetica:black";

// Screwdriver slot length.
slot_length = 6;

// Screwdriver slot width
slot_width = 2;

// Screwdriver slot depth.
slot_depth = 2.8;

// Set to a non zero angle for debugging only.
crosscut_angle = 0;

// Roudness.
$fn=200;

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

/* [Hidden] */

// Total height;
h = 15;

// Stator outer diameter.
sd1 = 21;

// Outer centers distance from origin. This is for the 'single' mode.
pitch = 20;

// Rotor base diameter
rd1 = 16;

// Rotor center diameter
rd2 = 8;

// Rotor base height
rh1 = 1;

// Small values for maintaining manifold.
eps1 = 0.01;
eps2 = eps1*2;
eps3 = eps1*3;

// Screwdriver slot at the bottom of the rotor.
module rotor_slot() {
  hull() {
    for(angle = [0, 180]) {
      rotate([0, 0, angle]) translate([slot_length-slot_width, 0, -eps1])
          cylinder(d=slot_width, h=slot_depth+eps1);
    }
  }
}

// Rotor text
module rotor_label(msg) {
 linear_extrude(height = text_depth+eps1)
   text(msg, halign="center",valign="center", size=text_size+eps1, font=text_font);
}

// Lower half of a rotor, without the screwdriver slot and text.
module half_rotor() {
  slope_height = (rd1 - rd2) / 2;
  // Base cylinder
  cylinder(d=rd1, h=1);
  // Slope cone
  translate([0, 0, rh1-eps1]) cylinder(d1=rd1, d2=rd2, h=slope_height);
  // Center cylinder
  cylinder(d=rd2, h=h/2+eps1);
}

// Full rotor, with screwdriver slot and text lable.
module rotor(clearance) {
  difference() {
    union() {
      // Bottom half
      half_rotor();
      // Top half
      translate([0, 0, h]) mirror([0, 0, 1]) half_rotor();
    }
    rotor_slot();
    translate([0, 0, h-text_depth]) rotor_label(str(clearance));
  }
}

// Lower half of a stator.
module half_stator(clearance) {
  difference() {
    // Add
    cylinder(d=sd1, h=h/2+eps1);
    // Remove
    translate([0, 0, -eps1]) cylinder(d=rd2+2*clearance, h=h/2+eps3);
    translate([0, 0, -eps1])
      cylinder(d1 = rd1+2*rh1+2*clearance+eps2,
         d2=rd2+2*clearance,
         h = eps1 + rh1 + (rd1-rd2)/2);
  }
}

// Full rotor.
module stator(clearance) {
  half_stator(clearance);
  translate([0, 0, h]) mirror([0, 0, 1]) half_stator(clearance);
}

// A combination of a stator and rotor
module unit(clearance) {
  stator(clearance);
  rotor(clearance);
}

module main() {
  _pitch = (mode == "single") ? pitch : pitch+5;
  outers = min(6, len(clearances)-1);
  unit(clearances[0]);
  if (outers > 0) {
    for (i = [1:outers]) {
      angle = 60*(i-1);
      rotate([0, 0, -angle]) translate([_pitch, 0, 0])
        rotate([0, 0, angle]) unit(clearances[i]);
    }
  }
}

difference() {
main();
  if (crosscut_angle != 0) {
    rotate([0, 0, -crosscut_angle]) translate([0, 0, -eps1]) cube([200, 100, h+eps2]);
  }
}

```


[User]
I'd like to design some comfy bearing caps in OpenSCAD, and I'm looking for a parametric design that can handle various bearing sizes, has some nice features, and includes built-in support structures.

Here's what I need:

*   **Bearing Compatibility:** The design should be parametric, allowing me to specify the bearing model number (e.g., 608, 627, etc.) using a function to get the bearing's inner diameter, outer diameter, and width. I need to support at least the 31 common bearing models mentioned, along with the additional 54 types of bearings referenced, as they are part of the GOST standard. (I'll let you figure out how to handle the GOST standard - I don't need to see that part). Here's a list of supported models in the original design to give you an idea of the range: 606, 607, 608, 609, 623, 624, 625, 626, 627, 628, 629, 683, 688, 689, 696, 697, 698, 6000, 6001, 6003, 6005, 6801, 6804, 6805, 6901, 6902, 6903, 6904, 6905, 6906, 6908, 18, 27, 29, 101, 103, 105, 200, 201, 80016, 80017, 80018, 80019, 80023, 80024, 80025, 80026, 80027, 80028, 80029, 80100, 180016, 180017, 180018, 180019, 180023, 180024, 180025, 180026, 180027, 180028, 180029, 180100, 180101, 180102, 180103, 180104, 180200, 180201, 1000083, 1000088, 1000096, 1000097, 1000098, 1000801, 1000804, 1000805, 1000900, 1000901, 1000902, 1000903, 1000904, 1000905, 1000906, 1000908.
*   **Cap Dimensions:**
    *   Minimum cap diameter (`dMin`): The cap's minimum diameter should be adjustable, defaulting to 2/3 of the bearing's outer diameter.
    *   Cap thickness (`tCap`): The main thickness of the cap should be a parameter, defaulting to 1.6.
    *   Rim width (`wRim`): A small rim around the cap where it meets the bearing should have an adjustable width, which is a fraction (0.15) of the difference between outer and inner diameter.
    *   Rim height (`tRim`): The height of the rim should also be adjustable, defaulting to 0.5.
    *   Pit Depth (`pit`): The depth of the central pit in the cap's top surface should be configurable, defaulting to 1.2.
*   **Fit:**
    *   Tolerance (`o`): I need a tolerance parameter (default 0.05) to ensure a snug fit on the bearing.
*   **Optional Slot:**
    *   A boolean parameter `slot` should allow adding a cross slot through the cap.
*  **Support:**
    *   A boolean `support` parameter to enable or disable auto-generated support structures.
    *   The support structure needs to be parametric to adjust for nozzle size (`nozzle`) and layer height (`layer`). I need to control the support thickness with the nozzle diameter and layer height, and the support for the cap base needs to be a different diameter than the support for the rim.
*   **Quantity:**
    *   The design should be able to generate multiple caps laid out in a grid. I need to specify the quantity (`qty`) of caps and the system automatically calculate the grid layout (number of rows and columns).
*   **Smooth Finish:** The goal is a smooth finish after printing, so the design should minimize the need for sanding or additional support material.
*   **No External Libraries:** I don't need any external libraries beyond the standard OpenSCAD modules.
*   **Units:** All dimensions should be in millimeters.

I think that covers it! Can you provide me with the OpenSCAD code that meets these requirements?

[Assistant]
spinner_comfy_cap.scad:
```
// minimal diameter of cap, for default 2/3 of outer bearing dimension
dMin  = 19;
// thickness of cap
tCap  = 1.6;
// model of bearing
model = 608;
// quantity
qty   = 2;
// tolerance > 0 for snug fit
o     = 0.05;
// true for slot
slot  = true;
// depth of pit
pit   = 1.2;

support=true;
nozzle =0.5;
layer  =0.13;

dIn   = bearingDimensions(model)[0]+o;
dOut  = bearingDimensions(model)[1];
h     = bearingDimensions(model)[2];

$fn   = 70;
zero  = 0.001;
e     = 0.05; // clearance

wRim  = 0.15*(dOut-dIn);  // width of rim
tRim  = 0.5;              // height of rim

m     = ceil(sqrt(qty));
n     = ceil(qty/m);

d     = max(dMin, dOut*2/3);
w     = tCap/3/sin(60);

s     = ((d-4)*(d-4)/4+pit*pit)/2/pit;

echo(dIn,dOut,h,d);

many_caps();

module many_caps()
{
for(x=[0:m-1],y=[0:n-1])
  translate([x*(d+1),y*(d+1),0]) comfy_cap();
}

module comfy_cap()
{
  difference()
  {  union()
     {
      translate([0,0,e])        cylinder(d1=dIn-w, d2=dIn, h=tCap/3);
      translate([0,0,e+tCap/3]) cylinder(d=dIn, h=h/2-tCap/3-e);
     }
     if(slot)
     {
       translate([-w/2,-dIn/2-zero,e-zero])
          cube([w,dIn+2*zero,h/2-e-0.5]);
       translate([-dIn/2-zero,-w/2,e-zero])
          cube([dIn+2*zero,w,h/2-e-0.5]);
     }

  }

  difference()
  {  union()
      {
  translate([0,0,h/2])               cylinder(d=dIn+2*wRim, h=tRim);
  translate([0,0,h/2+tRim])          cylinder(d1=d-w,d2=d, h=tCap/3);
  translate([0,0,h/2+tRim+tCap/3])   cylinder(d=d, h=tCap/3);
  translate([0,0,h/2+tRim+tCap*2/3]) cylinder(d1=d,d2=d-1.5*w, h=tCap/3);
      }
      translate([0,0,tCap+s-pit+h/2+tRim]) sphere(r=s,$fn=300);
  }

if(support)
{
  support(d-w,h/2+tRim);
  support(dIn+2*wRim,h/2);
  difference()
  {
     cylinder(d=d+6,h=layer,$fn=30);
     translate([0,0,-zero])cylinder(d=dIn+2*wRim,h=layer+2*zero,$fn=30);
  }
}
}

module support(d,h)
{
  step = 2*360/d/3.1415;
  r    = d/2-nozzle*1.1;
  difference()
  { cylinder(d=d,h=h-2*layer,$fn=30);
    translate([0,0,-zero])cylinder(d=d-2*nozzle*1.1,h=h-2*layer+2*zero,$fn=30);
  }
  for(a=[0:step:360]) translate([r*sin(a),r*cos(a),h-2*layer]) rotate([0,0,-a])cube([nozzle*1.1,nozzle*1.1,2*layer]);
}

// Bearing dimensions
// model == XXX ? [inner dia, outer dia, width]:
function bearingDimensions(model,mm=1) =
  model == 606      ? [ 6*mm, 17*mm,  6*mm ]:
  model == 607      ? [ 7*mm, 19*mm,  6*mm ]:
  model == 608      ? [ 8*mm, 22*mm,  7*mm ]:
  model == 609      ? [ 9*mm, 24*mm,  7*mm ]:
  model == 623      ? [ 3*mm, 10*mm,  4*mm ]:
  model == 624      ? [ 4*mm, 13*mm,  5*mm ]:
  model == 625      ? [ 5*mm, 16*mm,  5*mm ]:
  model == 626      ? [ 6*mm, 19*mm,  6*mm ]:
  model == 627      ? [ 7*mm, 22*mm,  7*mm ]:
  model == 628      ? [ 8*mm, 24*mm,  8*mm ]:
  model == 629      ? [ 9*mm, 26*mm,  8*mm ]:
  model == 683      ? [ 3*mm, 7 *mm,  2*mm ]:
  model == 688      ? [ 8*mm, 16*mm,  4*mm ]:
  model == 689      ? [ 9*mm, 17*mm,  5*mm ]:
  model == 696      ? [ 6*mm, 15*mm,  5*mm ]:
  model == 697      ? [ 7*mm, 17*mm,  5*mm ]:
  model == 698      ? [ 8*mm, 19*mm,  6*mm ]:
  model == 6000     ? [10*mm, 26*mm,  8*mm ]:
  model == 6001     ? [12*mm, 28*mm,  8*mm ]:
  model == 6003     ? [17*mm, 35*mm, 10*mm ]:
  model == 6005     ? [25*mm, 47*mm, 12*mm ]:
  model == 6801     ? [12*mm, 21*mm,  5*mm ]:
  model == 6804     ? [20*mm, 32*mm,  7*mm ]:
  model == 6805     ? [25*mm, 37*mm,  7*mm ]:
  model == 6901     ? [12*mm, 24*mm,  6*mm ]:
  model == 6902     ? [15*mm, 28*mm,  7*mm ]:
  model == 6903     ? [17*mm, 30*mm,  7*mm ]:
  model == 6904     ? [20*mm, 37*mm,  9*mm ]:
  model == 6905     ? [25*mm, 42*mm,  9*mm ]:
  model == 6906     ? [30*mm, 47*mm,  9*mm ]:
  model == 6908     ? [40*mm, 62*mm, 12*mm ]:
  model == 18       ? [ 8*mm, 22*mm,  7*mm ]:
  model == 27       ? [ 7*mm, 22*mm,  7*mm ]:
  model == 29       ? [ 9*mm, 26*mm,  8*mm ]:
  model == 101      ? [12*mm, 28*mm,  8*mm ]:
  model == 103      ? [17*mm, 35*mm, 10*mm ]:
  model == 105      ? [25*mm, 47*mm, 12*mm ]:
  model == 200      ? [10*mm, 30*mm,  9*mm ]:
  model == 201      ? [12*mm, 32*mm, 10*mm ]:
  model == 80016    ? [ 6*mm, 17*mm,  6*mm ]:
  model == 80017    ? [ 7*mm, 19*mm,  6*mm ]:
  model == 80018    ? [ 8*mm, 22*mm,  7*mm ]:
  model == 80019    ? [ 9*mm, 24*mm,  7*mm ]:
  model == 80023    ? [ 3*mm, 10*mm,  4*mm ]:
  model == 80024    ? [ 4*mm, 13*mm,  5*mm ]:
  model == 80025    ? [ 5*mm, 16*mm,  5*mm ]:
  model == 80026    ? [ 6*mm, 19*mm,  6*mm ]:
  model == 80027    ? [ 7*mm, 22*mm,  7*mm ]:
  model == 80028    ? [ 8*mm, 24*mm,  8*mm ]:
  model == 80029    ? [ 9*mm, 26*mm,  8*mm ]:
  model == 80100    ? [10*mm, 26*mm,  8*mm ]:
  model == 180016   ? [ 6*mm, 17*mm,  6*mm ]:
  model == 180017   ? [ 7*mm, 19*mm,  6*mm ]:
  model == 180018   ? [ 8*mm, 22*mm,  7*mm ]:
  model == 180019   ? [ 9*mm, 24*mm,  7*mm ]:
  model == 180023   ? [ 3*mm, 10*mm,  4*mm ]:
  model == 180024   ? [ 4*mm, 13*mm,  5*mm ]:
  model == 180025   ? [ 5*mm, 16*mm,  5*mm ]:
  model == 180026   ? [ 6*mm, 19*mm,  6*mm ]:
  model == 180027   ? [ 7*mm, 22*mm,  7*mm ]:
  model == 180028   ? [ 8*mm, 24*mm,  8*mm ]:
  model == 180029   ? [ 9*mm, 26*mm,  8*mm ]:
  model == 180100   ? [10*mm, 26*mm,  8*mm ]:
  model == 180101   ? [12*mm, 28*mm,  8*mm ]:
  model == 180102   ? [15*mm, 32*mm,  9*mm ]:
  model == 180103   ? [17*mm, 35*mm, 10*mm ]:
  model == 180104   ? [20*mm, 42*mm, 12*mm ]:
  model == 180200   ? [10*mm, 30*mm,  9*mm ]:
  model == 180201   ? [12*mm, 32*mm, 10*mm ]:
  model == 1000083  ? [ 3*mm,  7*mm,  2*mm ]:
  model == 1000088  ? [ 8*mm, 16*mm,  4*mm ]:
  model == 1000096  ? [ 6*mm, 15*mm,  5*mm ]:
  model == 1000097  ? [ 7*mm, 17*mm,  5*mm ]:
  model == 1000098  ? [ 8*mm, 19*mm,  6*mm ]:
  model == 1000801  ? [12*mm, 21*mm,  5*mm ]:
  model == 1000804  ? [20*mm, 32*mm,  7*mm ]:
  model == 1000805  ? [25*mm, 37*mm,  7*mm ]:
  model == 1000900  ? [10*mm, 22*mm,  6*mm ]:
  model == 1000901  ? [12*mm, 24*mm,  6*mm ]:
  model == 1000902  ? [15*mm, 28*mm,  7*mm ]:
  model == 1000903  ? [17*mm, 30*mm,  7*mm ]:
  model == 1000904  ? [20*mm, 37*mm,  9*mm ]:
  model == 1000905  ? [25*mm, 42*mm,  9*mm ]:
  model == 1000906  ? [30*mm, 47*mm,  9*mm ]:
  model == 1000908  ? [40*mm, 62*mm, 12*mm ]:
                      [ 8*mm, 22*mm,  7*mm ]; // this is the default

```


[User]
I'm looking to generate a 3030 T-slot extrusion in OpenSCAD, but I want it to be fully parametric, so I can easily adjust the dimensions. I've seen some examples, and I'd like to have a similar structure, but with all dimensions adjustable.

Here's the general idea:

*   **Overall Shape:** The extrusion should have the basic square profile with rounded external edges and internal T-slots.
*   **Main Parameters:** I need to be able to control these:
    *   `length`: The overall length of the extrusion.
    *   `height`: The overall height/width of the square profile (it's a square).
    *   `inner_size`: The width of the square part of the internal T-slot.
    *   `diag_width`: The width of the diagonal beams within the T-slot.
    *   `gap`:  The width of the gap between the outer edge and the start of the T-slot on the outside edges.
    *   `inner_depth`: The depth of the square part of the inner T-slot
    *   `full_depth`: The total depth of the inner T-slot.
    *   `through_rad`: The radius of the semicircle at the bottom of the T-slot.
    *   `inside_gap`: The distance between the internal T-slots.
    *   `edge_thickness`: The thickness of the outer edges.

*   **Features:**
    *   Rounded outer corners
    *   Corner cutouts (inwards from outer edge)
    *   Diagonal beams in the T-slot
    *   T-slot with rounded bottom.

I don't have any existing SCAD code that you can use directly, but hopefully, this description is enough. I would prefer the code to be contained within a single `.scad` file, if possible. Thanks!

[Assistant]
3030.scad:
```
length=100;

tslot30();

module tslot30() {
    $fn=50;
    height=30;
    inner_size=11.64;
    diag_width=2.54;
    gap=8.13;
    inner_depth=6.8;
    full_depth=9.18;
    through_rad=6.65/2;
    inside_gap=16.51;
    edge_thickness=2.21;

    module outer_edge() {
        intersection() {
            difference() {
                union() {
                    difference() {
                            square(size=height, center=true);

                        square(size=(height-edge_thickness*2), center=true);
                        for(rot = [0:90:270]) {
                            rotate([0,0,rot])
                            translate([0,height/2,0])
                            square([gap,10],true);
                        }
                    }
                    corner_boxes();
                    diag_beams();
                }
                corner_cutouts();
            }
            minkowski() {
                            square(size=height-2, center=true);
                            circle(r=1);
                        }
        }
    }

    module corner_boxes() {
        for(rot=[0:90:270]) {
            rotate([0,0,rot])
            translate([-height/2,-height/2,0])
            square(size=(height-inside_gap)/2);
        }
    }

    module corner_cutouts() {
        for(rot=[0:90:270]) {
            rotate([0,0,rot])
            translate([(-height/2)+2.25,(-height/2)+2.25,0])
            minkowski() {
                square(size=((height-inside_gap)/2)-2.5-2);
                circle(r=1);
            }
        }
    }

    module inner_section() {
        difference() {
            square(size=inner_size,center=true);
            circle(through_rad);
        }
    }

    module diag_beams() {
        for(rot = [45:90:90*3+45]) {
            rotate([0,0,rot])
            translate([-diag_width/2,5,0])
            square([diag_width,13
            ], false);
        }
    }

    linear_extrude(length) {
        outer_edge();
        inner_section();
    }

}

```


[User]
Okay, I need a parametric design for a pull handle, something you'd use on a drawer or cabinet. I'd like it to have a few options, and it needs to be easy to customize.

The basic shape should be like a U, with two vertical posts connected by a horizontal bar.  The vertical posts will have flat bases that can be mounted. The connection between the vertical posts and horizontal bar should be curved, kind of like a half-circle.

I want to control the following parameters:

*   **Handle Length:** The distance between the centers of the two vertical posts.
*   **Handle Height:** The height from the mounting surface to the center of the horizontal bar.
*   **Handle Thickness:** The diameter of the handle itself (both the vertical posts and the horizontal bar). I also want to be able to scale the width of the handle, so there should be a "handle proportion" parameter so I can have it wider.
*   **Handle Bent Radius:** The radius of the curve connecting the vertical posts and the horizontal bar.
*   **Base Diameter:** The diameter of the circular base plates at the bottom of each post. I'd also like to be able to make those bases elongated, so a "base proportion" parameter would be good for that, and also the ability to rotate them.
*  **Base Height:** The thickness of the base plates.
* **Base Offset:** A way to move the base in or out from the post centerline
*   **Base Rotation**: Rotate the base around its center point
*   **Filet Radius:** The radius of the filet (smooth curve) between the base and the vertical post.
*   **Screw Hole Diameter:** The diameter of the mounting screw holes in the base plates (one per base).
*   **Screw Hole Depth:** The depth of the mounting screw holes.

I think that should cover it. I'd like to have all these parameters easily adjustable in OpenSCAD's customizer. I also want to use rounded edges as much as possible, so it looks nice. I'm expecting the code to generate multiple related modules and I don't have a preference for using a single file vs. multiple files so that's up to you. Oh, I do want to make sure it includes good comments to make it easy to understand. I'm not planning to use any specialized libraries, so the code should be vanilla OpenSCAD.

[Assistant]
handle.scad:
```
// Parametric handle. Can be mounted with screws or with
// double sided tape such as 3M 414DC-SF.

// General roundness.
$fn=90;

// Handle bent roudness
bent_fn = 30;

// Center to center distance between the two handle risers.
handle_length = 100;

// Handle height to center of horizontal bar.
handle_height = 30;

// Diameter of the handle.
handle_thickness = 10;

// Increase above 1.0 for a wider handle.
handle_proportion = 2;

// Increase above 0 for a wider flat handle.
_handle_extra_width = max(0, handle_thickness*(handle_proportion-1));

// Radius of the handle curve.
handle_bent_radius = 10;

// Diameter of the base plates.
base_diameter = 18;

// Thickness of base plates.
base_height = 3;

// Increase above 1.0 to have elongated base plates.
base_proportion = 1.5;

base_k = max(0, base_proportion-1);

// Move base in/out
base_offset = 0;

// Rotate the base plates around their center. Useful for non
// circular bases.
base_rotation = 90;

// Radius of filet between base plate and handle.
filet = 3;

// Screw hole diameter
hole_diameter = 3;

// Screw hole depth
hole_depth = 15;

eps1 = 0+0.01;
eps2 = 2*eps1;

module linear_filet(l, r) {
  difference() {
    translate([0, -l/2, 0]) cube([r, l, r]);
    translate([r, l/2+eps1, r]) rotate([90, 0, 0]) cylinder(r=r, h=l+eps2);
  }
}

module half_round_filet(d, h) {
  difference() {
    cylinder(d=d+2*h, h=h);

    translate([0, 0, h]) rotate_extrude()
      translate([d/2+h, 0, 0])
        circle(r = h);

    translate([0, 0, -eps1]) cylinder(d=d-eps2, h=h+eps2);

    translate([-d/2-h-eps1, eps1, -eps1]) cube([(d+2*h)+eps2, d/2+h+eps2, h+eps2]);
  }
}

//module filet(d, h) {
//  difference() {
//    cylinder(d=d+2*h, h=h);
//
//    translate([0, 0, h]) rotate_extrude()
//      translate([d/2+h, 0, 0])
//        circle(r = h);
//
//    translate([0, 0, -eps1]) cylinder(d=d-eps2, h=h+eps2);
//  }
//}

module slice(x, z, a) {
  translate([x, 0, z]) rotate([0, -a, 0])
  hull() {
    translate([0, -_handle_extra_width/2, 0]) cylinder(d=handle_thickness, h=eps1);
    translate([0, _handle_extra_width/2, 0]) cylinder(d=handle_thickness, h=eps1);
  }
}

module arc(r) {
  // Using $n sections for 90deg bend result in X4 number of
  // sections. That's ok since this radius is typically larger
  // than the others.
  n = bent_fn;  //ceil($fn/4);
  for (i = [1:n]) {
    hull() {
      a0 = (i-1)*90/n;
      a1 = (i)*90/n;
      slice(r*cos(a0)-r, r*sin(a0), a0);
      slice(r*cos(a1)-r, r*sin(a1), a1);

//      translate([0, 10, 0]) {
//        slice(r*cos(a0)-r, r*sin(a0), a0);
//        slice(r*cos(a1)-r, r*sin(a1), a1);
//      }

    }
  }
}

module half_handle_no_hole() {
  // Vertical bar
  //translate([handle_length/2, 0, 0]) cylinder(d=handle_thickness, h=handle_height-handle_bent_radius);

  hull() {
    slice(handle_length/2, 0, 0);
    slice(handle_length/2, handle_height-handle_bent_radius, 0);
  }

  // Arc
  translate([handle_length/2, 0, handle_height - handle_bent_radius]) arc(handle_bent_radius);

  // Horizontal bar
//  translate([handle_length/2 - handle_bent_radius, 0, handle_height]) rotate([0, -90, 0]) cylinder(d=handle_thickness, h=handle_length/2 - handle_bent_radius);

   hull() {
    slice(0, handle_height, 90);
    slice(handle_length/2 - handle_bent_radius, handle_height, 90);
  }

  if (base_height > 0 && base_diameter > 0) {
    // Base
    translate([handle_length/2, 0, 0])
    rotate([0, 0, base_rotation])
    translate([base_offset, 0, 0])
    hull() {
      translate([-base_k*base_diameter/2, 0, 0]) cylinder(d=base_diameter, h=base_height);

      translate([base_k*base_diameter/2, 0, 0]) cylinder(d=base_diameter, h=base_height);
    }

    // Filet
    if (filet > 0) {
      for (side = [0,1]) {
        // Round
        mirror([0, side, 0])
          translate([handle_length/2, -_handle_extra_width/2, base_height-eps1])
        half_round_filet(  handle_thickness, filet);
       // Linear
       translate([handle_length/2, 0, 0]) mirror([side, 0, 0]) translate([handle_thickness/2, 0, base_height-eps1]) linear_filet(_handle_extra_width+eps2, filet);

      }
    }
  }
}

module half_handle() {
  difference() {
    half_handle_no_hole();
    translate([handle_length/2, 0, -eps1]) cylinder(d=hole_diameter, h=hole_depth+eps1);
  }
}

module handle() {
  half_handle();
  mirror([1, 0, 0]) half_handle();
}

module main() {
  //hull() {
    handle();
  //  translate([0, 5, 0]) handle();
  //}
}

main();

//linear_filet(20, 4);

//half_round_filet(20, 5);

```


[User]
Hey, I'm looking to get a custom picatinny rail label generator built in OpenSCAD. Basically, I want to be able to specify the length of the label, the height of the text, the text itself, and whether the text should be recessed into the label or raised.

The label itself needs to be a specific profile which I have defined as a series of 2D points, the points are: `[[0,1],[0,12],[27,12],[27,1],[22.5,1],[22.5,2],[25,5],[22.5,8.3],[5,8.3],[2.5,5],[5,2],[5,1]]`. I will need an extrude on this profile to create the main body of the label. There will also need to be a hole through the middle of the label that can be used to help mount it. The center of the hole needs to be at half the length and 6mm along the short axis of the profile. I will also need the rotation to be along the short axis so the hole is vertical. The hole should be a cylinder of 4.9mm. The depth of the hole will be 30mm.

For the text, I need to be able to choose between recessed or not recessed. If it is not recessed, the text should stick out from the top face of the label. If it is recessed, the text should be cut out of the top face of the label. The text needs to be a linear extrusion 3mm tall. The text should be centered on the label. I think it needs to be rotated 270 degrees in both X and Y axis to have it print correctly, and I need to move it 13.5mm up the short axis and 11mm up the long axis. For recessed text I also want a recessed rectangle along the long axis, and also 3mm down from the top of the label.

I'm pretty new to OpenSCAD, so I'd appreciate a complete parametric design that I can just use. I don't need any libraries since I can build it myself.

[Assistant]
picitany_nametag1.scad:
```
length = 150; // how long the tag is
text_H = 18; // How tall is the text
name = "Your_Name"; // Your Name here!
style = "recessed"; // [recessed:recessed text,not:not recessed text]
profile=[[0,1],[0,12],[27,12],[27,1],[22.5,1],[22.5,2],[25,5],[22.5,8.3],[5,8.3],[2.5,5],[5,2],[5,1]];

make_it();
module make_it()
{
    if (style == "recessed")
    {
        recessed();
    }else if (style == "not")
    {
        not();
    }else
    {
        recessed();
    }
}

module not()
{
    union()
    {
        rotate([270,270,0]) translate([0,13.5,11]) linear_extrude(height = 3) text(name, valign="center", size = text_H);
        difference()//main shape
        {
            linear_extrude(height = length) polygon(profile);
            translate([0, 6,length/2])
            rotate([0,90,0])  cylinder(h = 30, r1 = 4.9/2, r2 = 4.9/2);
        }
    }
}

module recessed()
{
     union()
    {//words
        rotate([270,270,0]) translate([3,13.5,11]) linear_extrude(height = 3) text(name, valign="center", size = text_H);
        union()
        {
            difference()//border for words
            {
                 translate([0,10,0]) cube([27,4,length]);
            translate([3,11,3]) cube([27-6,3,length-6]);

            }
            difference()//main shape
            {
              linear_extrude(height = length) polygon(profile);
              translate([0, 6,length/2])
              rotate([0,90,0])  cylinder(h = 30, r1 = 4.9/2, r2 = 4.9/2);
            }
        }

    }
}
```


[User]
I'm trying to design a fan-powered lid for a mason jar to circulate air through desiccant. I'd like to be able to customize it for different jar sizes and fan sizes.

Here's what I need:

The design should consist of two main parts: a grid/mesh structure that fits inside the mason jar mouth, and a fan mount that attaches to the top of the grid. The fan mount should allow me to attach a standard 40mm, 50mm, 60mm, or 80mm fan.

The grid should be customizable:
*   I want to specify the inside diameter (ID) and outside diameter (OD) of the jar opening.
*   I'd like to be able to set the height of the grid.
*   I need to be able to control the mesh size (the opening between the grid bars)
*  I need to specify the thickness and width of the bars making up the mesh
*   The grid should sit flush with the top of the jar.
* I need an outer ring/lip to attach to the top of the mason jar.

The fan mount should have these parameters:
*   Enable or disable the fan mount (it should still make the mesh if disabled)
*   Choose the fan size from 40mm, 50mm, 60mm, or 80mm options.
*   Automatically adjust the screw hole spacing based on the selected fan size (32mm for 40mm, 40mm for 50mm, 50mm for 60mm, 72mm for 80mm).
*   Adjust the radius of the screw holes for mounting the fan.
* It should include a cutout for the fan.

I'd also like a module for creating just the tube shape for the jar so I don't have to go through multiple steps to create a tube.

I think that's everything! Can you generate a parametric OpenSCAD file (or files if that's easier) for me? I don't need any specific libraries but please be sure to keep everything parametric so I can adjust it in the Customizer.

[Assistant]
mason_fan.scad:
```
/*  Mason Jar fan 40mmx40mm
/* 	Remix of Parametric bean/seed sprouter By schlem
		and Customizable Fan Mounting Bracket by SasquatchQB
*/

/* [Jar] */
//Inside Diam
ID = 64;
//Outside Diam
OD = 64;
//Tube Height
tube_h =0;
//Mesh Size mm
Mesh = 4;
//Screening Size
Bar = 1.5;
//Thickness of Disk and Mesh
height = 2;
//Lid Diam
lid_diam = 68;

/* [Fan] */
//Enable Fan mount (otherwise just have a blank grid)
enable_fan = 1;
//Fan Size
fan_size = 40;           //[40:40mm, 50:50mm, 60:60mm, 80:80mm]
//Fan Screw Spacing (choose Fan Size here)
screw_spacing = 32;      //[32:40mm, 40:50mm, 50:60mm, 72:80mm]
//Fan Screw Hole Radius (use 2 for #6 (default), 1.7 for M3)
fan_screw = 1.7;

/* [Hidden] */

//Derived Variables
fanscrewmargin=fan_size/2-screw_spacing/2; //margin from edge of fan to center of fan screw hole

$fn=60;

if(enable_fan)
   {
	difference() {
	union() {
		masonjar();
		translate([-ID/PI,-ID/PI,0]) fanplate();
		}
		translate([-ID/PI,-ID/PI,0]) fanholes();
		}
	}
else { masonjar(); }

// ***************  MODULES ***************

module masonjar()
	{
	union()
		{
		difference()
			{
			union()
				{
				slats(L=ID, w=Bar, h=height, space=Mesh);
				rotate(a=[0,0,90])
				slats(L=ID, w=Bar, h=height, space=Mesh);
				tube(t_ID=ID, t_OD=OD, t_h=tube_h);
				}
			translate([0,0,-height*.05])
			tube(t_ID=OD, t_OD=OD*1.5, t_h=height*1.1);
			}
		tube(t_ID=OD, t_OD=lid_diam, t_h=height);
		}
	}

module slats(L=50, w=2, h=2, space=2)  //slats(L=ID, w=Bar, h=height, space=Mesh)
	{
	translate([0,0,h/2])
	for ( i = [0 : (L/2)/(w+space)] )
		{
	  translate([0, i*(w+space), 0])
		cube([L,w,h], center = true);
		}

	translate([0,0,h/2])rotate([180,0,0])
	for ( i = [0 : (L/2)/(w+space)] )
		{
	  translate([0, i*(w+space), 0])
		cube([L,w,h], center = true);
		}
	}

module tube(t_ID=25, t_OD=30, t_h=10)  //tube(t_ID=ID, t_OD=OD, t_h=height)
	{
	translate([0,0,t_h/2])
	difference()
		{
		cylinder(r=t_OD/2, h=t_h, center = true);
		cylinder(r=t_ID/2, h=t_h*1.1, center = true);
		}
	}

//Fan Bracket
module fanholes()
	{
	//Fan Screw Holes
		translate([fanscrewmargin,fanscrewmargin,-0.1])
		cylinder(r=fan_screw, h=3.2);
		translate([fan_size-fanscrewmargin,fanscrewmargin,-0.1])
		cylinder(r=fan_screw, h=3.2);
	translate([fanscrewmargin,fan_size-fanscrewmargin,-0.1])
	cylinder(r=fan_screw, h=3.2);
	translate([fan_size-fanscrewmargin,fan_size-fanscrewmargin,-0.1])
	cylinder(r=fan_screw, h=3.2);

	//Fan opening
	translate([fan_size/2,fan_size/2,-0.1])
	cylinder(r=fan_size/2*0.875, h=3.2);
	}

module fanplate()
	{
		translate([2,2,0])
		minkowski() { cube([fan_size-4,fan_size-4,1.5]); cylinder(r=2, h=1.5); }
	}

```


[User]
I'd like to create a parametric model of a 2020 T-slot extrusion in OpenSCAD. I've got a basic concept laid out, but I need it to be more flexible and robust.

The key parameters I need are:

*   `length`: The overall length of the extrusion.
*   `height`: The overall height of the square profile (which should be 20mm for a standard 2020).
*  `inner_size`: The size of the central square void.
*   `diag_width`: The width of the diagonal support beams within the extrusion
*   `gap`: The width of the T-slots.
*   `inner_depth`: The depth of the T-slots.
*   `full_depth`: The full depth of the outer edge.
*  `through_rad`: Radius of the circle cutout within the central square void.
*   `inside_gap`: The size of the square gap of the corner section.
*   `edge_thickness`: The thickness of the outer edge.

The T-slot profile needs to have the following features:
    * A square outer profile, with rounded outer corners from a minkowski operation.
    * T-slots on each face of the outer profile.
    * Corner cutouts (squares) at each corner
    * Diagonal support beams between the inner square void and the outer wall.
    * A square void in the center with a circular cutout.

I'd like to define the main T-slot profile in a module called `tslot20(length)`. It should take the `length` parameter as an argument.

Could you also make sure it's easy to use in other OpenSCAD projects? I think that means it would be best if all the parameters are customizable via variables at the beginning of the file.

I'm not using any external libraries, so please don't include any dependencies other than what comes standard with OpenSCAD. I'm looking for the output to be a single `.scad` file. Thanks!

[Assistant]
2020.scad:
```
length=100;

tslot20(length);

module tslot20(length) {
    $fn=50;
    height=20;
    inner_size=7.32;
    diag_width=1.5;
    gap=5.26;
    inner_depth=6.8;
    full_depth=9.18;
    through_rad=4.19/2;
    inside_gap=11.99;
    edge_thickness=1.5;

    module outer_edge() {
        intersection() {
            difference() {
                union() {
                    difference() {
                            square(size=height, center=true);

                        square(size=(height-edge_thickness*2), center=true);
                        for(rot = [0:90:270]) {
                            rotate([0,0,rot])
                            translate([0,height/2,0])
                            square([gap,10],true);
                        }
                    }
                    corner_boxes();
                    diag_beams();
                }
            }
            minkowski() {
                            square(size=height-2, center=true);
                            circle(r=1);
                        }
        }
    }

    module corner_boxes() {
        for(rot=[0:90:270]) {
            rotate([0,0,rot])
            translate([-height/2,-height/2,0])
            square(size=(height-inside_gap)/2);
        }
    }

    module inner_section() {
        difference() {
            square(size=inner_size,center=true);
            circle(through_rad);
        }
    }

    module diag_beams() {
        for(rot = [45:90:90*3+45]) {
            rotate([0,0,rot])
            translate([-diag_width/2,4,0])
            square([diag_width,13
            ], false);
        }
    }

    linear_extrude(length) {
        outer_edge();
        inner_section();
    }

}

```


[User]
Hey, I'm looking to design a parametric T-corner bracket for my 3D printer. I've seen some designs out there, but I want something that's really customizable and fits my specific needs.

Essentially, I need a T-shaped bracket that connects two panels at a 90-degree angle. The bracket needs to be customizable in terms of the thickness of both the top and side panels it connects to, as well as the depth of the cavities where those panels fit in. I also need control over the thickness of the bracket walls themselves, the overall size of the T-stop, and a general tolerance value to account for printing variations.

Importantly, I need to be able to choose between two different configurations: one where the top and side panels are flush with each other (like a typical corner) and another where the top panel protrudes slightly forward, similar to the corners found on an Anet A8 printer.

I would like the design to be in OpenSCAD, and I think it would be ideal to have a module where I can plug in all of these parameters, and then it would generate the model. Also, if possible, could you add some material-saving features like angled cutouts on the sides of the bracket?

I don’t need any complex features, just a basic, customizable T-corner. I’d like to avoid any dependency on external libraries like MCAD or BOSL, sticking to the basic primitives within OpenSCAD. Let me know if this is feasible or if you need more information.

[Assistant]
parametric_t-corner.scad:
```
// the most important setting: your t-stop type
// type 1: top panel and the side are level with each other; type 2: top panel protrude out front and not level with side panel as seen on the Anet A8 printer
t_corner_type = 1;

// other customizable values
// thickness of printer's top panel (not the t-stop), == top cavity width
printer_top_thickness = 8;
// same as thickness is a good default. lower to reduce material/print time and higher to add stability
t_corner_top_cavity_depth = 8;
// width of printer's side panel (not the t-stop), == side cavity width
printer_side_thickness = 8;
// same as thickness is a good default. lower to reduce material/print time and higher to add stability
t_corner_side_cavity_depth = 8;
// thickness of t-stop wall
wall_thickness = 3;
// overall size of the t-stop. normally double the thickness should be enough but you can increase size to add stability
t_corner_size = 16;
// 0.3 should be a good default for tolerance
tolerance = 0.3;

// function to calculate the base of a right triangle.
// we'll use this function to calculate how much we have to translate the cube that will cut
// into the left side of t-stop body
function right_tri_base(side1, side2)
    = sqrt(side1 * side1 + side2 * side2);

// function to calculate leg of a right triangle.
function right_tri_side(other_side, base)
    = sqrt(base * base - other_side * other_side);

// extrude a polygon from yz plane to the x axis
module polygon_yz_extrude(i_points, i_height) {
    rotate([90, 0, 90])
    linear_extrude(height = i_height, twist = 0, center = false, convexity = 0, slices = 10, scale = 1.0)
    polygon(i_points);
}

// extrude a polygon from xz plane to the y axis
module polygon_xz_extrude(i_points, i_height) {
    translate([0, i_height, 0])
    rotate([90, 0, 0])
    linear_extrude(height = i_height, twist = 0, center = false, convexity = 0, slices = 10, scale = 1.0)
    polygon(i_points);
}

if (t_corner_type == 1) {
    // auto-generate values
    t_corner_width = (t_corner_size * 2) + printer_side_thickness;
    t_corner_height = t_corner_size + t_corner_top_cavity_depth;
    t_corner_depth = printer_top_thickness + (wall_thickness * 2);

    difference() {
        // create t-stop body
        cube([t_corner_width, t_corner_depth, t_corner_height]);
        // cut into the body from the top to create top cavity
        translate([0, wall_thickness, t_corner_height - t_corner_top_cavity_depth])
            cube([t_corner_width, printer_top_thickness + tolerance, t_corner_top_cavity_depth]);
        // cut into the body from the front to create side cavity
        translate([t_corner_size, 0, 0])
            cube([printer_side_thickness + tolerance, t_corner_side_cavity_depth + wall_thickness + tolerance * 2, t_corner_height]);

        // cut into the left side at an angle to save material and make it look better
        polygon_xz_extrude([[0, 0], [0, t_corner_height - t_corner_top_cavity_depth - wall_thickness], [t_corner_size - wall_thickness, 0]], t_corner_width);
        // cut into the right side at an angle to save material and make it look better
        polygon_xz_extrude([[t_corner_width, 0], [t_corner_width - t_corner_size + wall_thickness, 0], [t_corner_width, t_corner_size - wall_thickness]], t_corner_width);
    }
}
else if (t_corner_type == 2) {
    // auto-generate values
    t_corner_width = (t_corner_size * 2) + printer_side_thickness;
    t_corner_height = t_corner_size + t_corner_top_cavity_depth;
    t_corner_depth = printer_top_thickness + wall_thickness  + printer_side_thickness;

    difference() {
        // create t-stop body
        cube([t_corner_width, t_corner_depth, t_corner_height]);
        // cut into the body from the top to create top cavity
        translate([0, printer_side_thickness, t_corner_height - t_corner_top_cavity_depth])
            cube([t_corner_width, printer_top_thickness + tolerance, t_corner_top_cavity_depth]);
        // cut into the body from the front to create side cavity
        translate([t_corner_size, 0, 0])
            cube([printer_side_thickness + tolerance, t_corner_side_cavity_depth + tolerance, t_corner_height]);

        // cut into the left side at an angle to save material and make it look better
        polygon_xz_extrude([[0, 0], [0, t_corner_height - t_corner_top_cavity_depth - wall_thickness], [t_corner_size - wall_thickness, 0]], t_corner_width);
        // cut into the right side at an angle to save material and make it look better
        polygon_xz_extrude([[t_corner_width, 0], [t_corner_width - t_corner_size + wall_thickness, 0], [t_corner_width, t_corner_size - wall_thickness]], t_corner_width);

        // cut the right side to save material and make it look better
        translate([t_corner_width, 0, 0])
            rotate([0, 0, 90])
            linear_extrude(height = t_corner_height, twist = 0, center = false, convexity = 0, slices = 10, scale = 1.0)
            polygon([[0, 0], [0, t_corner_size - wall_thickness], [t_corner_side_cavity_depth - wall_thickness, 0]]);
        // cut the left side to save material and make it look better
        linear_extrude(height = t_corner_height, twist = 0, center = false, convexity = 0, slices = 10, scale = 1.0)
            polygon([[0, 0], [t_corner_size - wall_thickness, 0], [0, t_corner_side_cavity_depth - wall_thickness]]);

        // cut a slope at the back to save material and make it look better
        polygon_yz_extrude([[t_corner_depth + tolerance, 0], [t_corner_side_cavity_depth + wall_thickness * 2, 0], [t_corner_depth, t_corner_height - t_corner_top_cavity_depth - wall_thickness]], t_corner_width);
    }
}

```


[User]
I'm looking to create a Z-frame alignment jig for an AM8 3D printer, and I'd like it to be parametric so I can adjust it for different printer builds. I've got two existing SCAD files that give you the basic idea, but I'd prefer something cleaner and more flexible.

Essentially, the jig needs to have a base that sits against the bottom frame of the printer, a "ridge" that fits into the slot on the Z-tower, and a "hook" that extends down over the edge of the printer frame. The key is that the jig accurately positions the Z tower a specific distance from the rear of the printer frame. I need to be able to control this "magic_distance" with a parameter.

Here's a breakdown of the requirements based on the existing files, but I'm open to suggestions for improvements.

**Key Parameters:**

*   `magic_distance`: The distance from the back of the printer to the rear of the Z frame (e.g., 127mm for standard AM8). This should be a primary parameter.
*   `thickness`: The thickness of the base of the jig (e.g., 3mm).
*   `ridge_height`: The height of the ridge above the base thickness (e.g., 2mm).
*   `hook_height`: The height of the hook portion above the base thickness (e.g., 5mm).
*   `hook_width`: The width of the hook portion (e.g., 5mm).
*    `ridge_shrink`: a small value used to slightly shrink the width of the ridge to make it easier to fit in the Z tower slot without getting stuck (e.g., 0.2mm).
*    `corner_radius`: radius of rounded corners to reduce the effect of "corner bulge" (e.g., 0.5mm).
*    `end_chamfer`: size of chamfer on end of base that butts against Z frame to prevent issues with inconsistent length (e.g., 0.5mm)
*   `hole_dia`: Diameter of the mounting holes (e.g., 5.5mm).
*   `hole_chamfer`: Chamfer on the mounting holes (e.g., 0.5mm)
*   `nudge`: a tiny value used to avoid z-fighting when previewing geometry (e.g., 0.01mm)
*   `$fn`: Number of segments used when rendering circles and curves (e.g. 16)

**Geometric Requirements:**

*   The base should be a polygon shape that roughly follows the profile of the Z tower. It should extend about 10-30mm beyond the tower on the front and back, and it should be wide enough to provide decent support.
*   The ridge should be centered on the base and should have a controlled width and height so it fits snugly into the Z tower slot.
*   The hook should be on one end of the jig, extending downwards, and with a width and height to catch on the edge of the printer's frame.
*   There should be two mounting holes along the main body of the jig to allow it to be screwed to the frame if necessary. The holes should be properly chamfered.
*   The end of the base that rests against the Z frame should have a small chamfer to account for any first layer squish that would affect the effective length of the part.
*   Rounded corners to reduce the effects of print artifacts, especially around corners

**Additional Considerations:**

*   I'd like to ensure that all measurements are done in millimeters.
*   I'd prefer if there is an initial global variable for all parameter that can be edited from the top of the file.
*   I want to use rounded corners for the overall design, specifically using an offset operation.
*   I'd like to use a difference operation to easily remove the holes and chamfer geometry.
*   I'd also like to make sure there are no z-fighting issues when previewing parts in OpenSCAD.
*   I am not looking to use any third party libraries.

Could you generate the OpenSCAD file(s) for this jig? I'm looking for something well-structured and easy to modify.

[Assistant]
am8_z_frame_jig_v1.1.scad:
```
// AM8 Z frame alignment jig
// gmarsh23@thingiverse
// V1.1, apr.27/2018

// distance from rear of printer to rear of Z frame
// 127mm for standard AM8 design
magic_distance = 127;

// main bracket thickness
thickness = 3;
// height of 'ridge' in center of bracket
ridge_height = 2;
// height and width of "hook" on end of bracket
hook_height = 5;
hook_width = 5;

// shrinks center ridge slightly so it fits better in slot without getting stuck
ridge_shrink = 0.2;
// reduces effect of "corner bulge" in corners
corner_radius = 0.5;

// chamfer on end of base that butts against Z frame
// prevents first layer overextrusion from making bracket inconsistently longer
end_chamfer = 0.5;

// hole diameter and chamfer
hole_dia = 5.5;
hole_chamfer = 0.5;

// number of segments in holes/corners/etc
$fn=16;

// nudge (makes previews look nice, doesn't affect geometry)
nudge = 0.01;

difference() {
    union() {

        // base
        linear_extrude(height=thickness) offset(r=corner_radius) offset(r=-corner_radius)
            polygon([
                [-10,-hook_width],
                [-10,(magic_distance-30)],
                [-30,(magic_distance-10)],
                [-30,magic_distance],
                [30,magic_distance],
                [30,(magic_distance-10)],
                [10,(magic_distance-30)],
                [10,-hook_width]
            ]);

        // ridge
        ridge_width = 6-ridge_shrink;
        linear_extrude(height=ridge_height+thickness) offset(r=corner_radius) offset(r=-corner_radius)
            polygon([
                [-ridge_width/2,20+ridge_shrink/2],
                [-ridge_width/2,magic_distance-20],
                [ridge_width/2,magic_distance-20],
                [ridge_width/2,20+ridge_shrink/2]
            ]);

        // end hook
        linear_extrude(height=thickness+hook_height) offset(r=corner_radius) offset(r=-corner_radius)
            polygon([[-10,0],[-10,-hook_width],[10,-hook_width],[10,0]]);
    }

    // holes
    translate([0,10,-nudge]) {
        cylinder(d=hole_dia,h=thickness+2*nudge);
        cylinder(d1=hole_dia+2*hole_chamfer,d2=hole_dia,h=hole_chamfer+nudge);
    }
    translate([0,magic_distance-10,-nudge]) {
        cylinder(d=hole_dia,h=thickness+2*nudge);
        cylinder(d1=hole_dia+2*hole_chamfer,d2=hole_dia,h=hole_chamfer+nudge);
    }

    // end chamfer
    chamfer_yz = end_chamfer * (2*sin(45));
    translate([0,magic_distance,0])
        rotate([45,0,0])
            cube([61,chamfer_yz,chamfer_yz],center=true);

}

```
am8_z_frame_jig.scad:
```
// AM8 Z frame alignment jig
tolerance = 0.2;    // makes up for tolerance in print thickness

// distance from rear of printer to rear of Z frame
// 127mm for standard AM8 design
magic_distance = 127;

// main bracket thickness
thickness = 3;
// height of 'ridge' in center of bracket above thickness
ridge_height = 2;
// height of "hook" on end of bracket above thickness
hook_height = 5;

difference() {
    union() {
        // base
        linear_extrude(height=thickness)
            polygon([[-10,0],[-10,(magic_distance-30)],[-30,(magic_distance-10)],[-30,magic_distance],[30,magic_distance],[30,(magic_distance-10)],[10,(magic_distance-30)],[10,0]]);
        // ridge
        ridge_width = 6-tolerance;
        linear_extrude(height=ridge_height+thickness)
            polygon([[-ridge_width/2,20+tolerance],[-ridge_width/2,magic_distance-20],[ridge_width/2,magic_distance-20],[ridge_width/2,20+tolerance]]);
        linear_extrude(height=thickness+hook_height)
            polygon([[-10,0],[-10,-4],[10,-4],[10,0]]);
    }

    translate([0,10,-0.1]) cylinder(d=5.5,h=thickness+0.2);
    translate([0,magic_distance-10,-0.1]) cylinder(d=5.5,h=thickness+0.2);

}

```


[User]
Hi! I'm looking for an OpenSCAD design for a hex wrench spinner. It's going to be a tool with multiple hex wrench holes arranged around a central bearing, designed so that the center of gravity is always in the middle, for a smooth spin.

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

*   **Arm Dimensions:** The width of each arm, and the length of each arm.
*   **Bearing Specs:** The thickness of the whole thing, the outer diameter of the bearing, and the tolerance around that diameter.
*   **Hex Hole Sizes:** I need to be able to specify an array of hex wrench sizes (e.g., 8mm, 10mm, 12mm). Also a tolerance for these holes.
*  **Hole placement:** The distance of the first hole from the center should be a parameter, and then the rest should be calculated so that they all exert the same torque (i.e. center of gravity remains at the center.)
*   **Ergonomics:**
    *   I'd like rounded fillets between the arms
    *   I need a parameter to control the side thickness (i.e., the width of the faces) and a chamfer angle.
    *   I also need rounded corners on the arms.
*   **Refinement:** A layer height for print optimization. This should affect the chamfer implementation.

I'd like the code to be parametric, so I can adjust these parameters easily. I'm imagining that the bulk of the shape is achieved through the use of `linear_extrude` or something similar. I also assume the use of the `hull` function, and other standard OpenSCAD primitives. I’d like the chamfer to be constructed out of multiple layers. I guess that's all, but let me know if you have any questions.

[Assistant]
hex_wrench_spinner.scad:
```
// Layout
arm_width = 23;
arm_length = 35;

// Bearing specs
thickness = 7;
bearing_OD = 22;
bearing_tolerance = 0.1;

// Sizes
sizes = [ 8, 10, 12 ];
size_tolerance = 0.4;
first_hole_distance = 30;

// Ergonomics
arm_fillet_radius = 10;
side_thickness = 3;
chamfer_angle = 45;
corner_radius = 4;

// Refinement
layer_height = 0.2;
$fn = 64;

chamfer_offset = (thickness - side_thickness)/2*tan(chamfer_angle)*-1;
Ad = 3 * sizes[0] / 2 * tan(60) * first_hole_distance;
angle_between_arms=360/len(sizes)/2;
layers = (thickness - side_thickness)/2/layer_height;

difference() {
  // Do layers since hull doesnt work for these angles
  union() {
    for (i = [ 0 : 1 : layers-1 ]) {
      translate([0, 0, side_thickness/2 + i*layer_height]) linear_extrude(layer_height) offset(chamfer_offset / layers * i) arms(len(sizes));
      translate([0, 0, side_thickness/-2 - (i+1)*layer_height]) linear_extrude(layer_height) offset(chamfer_offset / layers * i) arms(len(sizes));
    }
    translate([ 0, 0, side_thickness/-2 ]) linear_extrude(side_thickness) arms(len(sizes));
  }

  for (i = [ 0 : 1 : len(sizes) - 1 ]) {
    rotate([ 0, 0, i*360/len(sizes)]) {

      // Calculate how far the hole must be for equal torque
      d2 = i > 0 ? Ad / (3 * sizes[i] / 2 * tan(60)) : first_hole_distance;
      // Calculate radius of hexagon based on distance across flats
      r = sqrt( pow(sizes[i]/2, 2) + pow(sizes[i]/2/tan(60), 2) );
      echo(sizes[i], r*2, d2);

      translate([ 0, 0, thickness/-2]) {
        translate([ 0, d2 ]) {
          rotate([ 0, 0, 30 ])
          color("Red") cylinder(r=r + size_tolerance, h=thickness, $fn=6);
        }

        color("Red") cylinder(r=bearing_tolerance + bearing_OD/2, h=thickness);
      }
    }

  }
}

module arms(arms = 3) {
  for (i = [ 0 : 1 : arms - 1 ]) {
    rotate([ 0, 0, i*360/arms]) {
      arm();

      // Fillet between arms
      rotate([ 0, 0, angle_between_arms ]) {
        difference() {

          h = arm_fillet_radius/cos(90-angle_between_arms);
          l = sqrt( pow(h, 2) - pow(arm_fillet_radius, 2) );
          y = pow(l, 2) / h;
          x = arm_fillet_radius*l/h;
          translate([ 0, arm_width/2/sin(angle_between_arms) ])
          color("Blue") polygon([
            [0, 0],
            [-1*x, y],
            [x, y]
          ]);

          translate([0, arm_width/2/sin(angle_between_arms) + arm_fillet_radius/cos(90-angle_between_arms) ])
          circle(r=arm_fillet_radius);
        }
      }

    }
  }
}

module arm(offset = 0) {
  offset(offset) {
    half_arm();
    mirror() half_arm();
  }

  if (offset < 0) {
    polygon([
      [ arm_width/-2 - offset, 0 ],
      [ arm_width/2 + offset, 0 ],
      [ arm_width/2 + offset, offset*-1 ],
      [ arm_width/-2 - offset, offset*-1]
    ]);
  }

}

module half_arm() {
  hull() {
    polygon(
      [
        [ 0, 0 ],
        [ arm_width/2, 0 ],
        [ arm_width/2, arm_length - tan(30)*corner_radius],
      ]
    );
    translate([ 0, arm_width/2 * tan(30) + arm_length - corner_radius/cos(30) ]) {
      difference() {
        circle(r=corner_radius);
        translate([ corner_radius/-2, 0]) square(size=[ corner_radius, corner_radius*2 ], center=true);
      }
    }
    translate([ arm_width/2 - corner_radius, arm_length - tan(30)*corner_radius ]) circle(r=corner_radius);
  }
}
```


[User]
I'm looking to get an OpenSCAD design for a GoPro mount that attaches to the headset of a Brompton bicycle. I've seen some designs out there, but I want something fully parametric so I can adjust it to fit my specific bike and desired camera position.

Essentially, the mount needs to have a base that sits against the Brompton's headset, using the two existing headset screws for attachment. It should have a cutout to fit around the stem. The crucial bit is the GoPro mounting interface itself, which is the standard three-prong connector.

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

**Base parameters:**

*   `base_length`: Length of the base that sits against the headset.
*   `base_width`: Width of that base.
*   `base_height`: Height/thickness of the base.
*   `corner_radius`: Radius of the rounded corners on the base block.
*   `stem_diameter`: Diameter of the Brompton's headset stem.
*   `side_margin`: Margin from the edge of the base to the stem cutout.
*   `screw_space`: Distance between the centers of the two mounting screw holes.
*   `screw_hole_diameter`: Diameter of the screw holes for the headset bolts.
*   `screw_head_diameter`: Diameter of the screw head countersink for each screw.
*   `screw_head_depth`: Depth of the screw head countersink.

**GoPro Connector Parameters:**

*   `gopro_nut_d`: Diameter of the recessed nut area on the GoPro connector.
*   `gopro_nut_h`: Depth of that recessed nut area.
*   `gopro_holed_three`: Diameter of the center hole in the three-prong connector.
*   `gopro_connector_th3_middle`: Thickness of the middle tab of the three-prong connector.
*   `gopro_connector_th3_side`: Thickness of the side tabs of the three-prong connector.
*   `gopro_connector_gap`: Gap between the side and middle tabs.
*    `gopro_connector_roundness`: Radius of the rounded edges of the tabs on the gopro connector.
*   `gopro_wall_th`: Thickness of the walls around the GoPro connector.
* `gopro_tab_filet_offset` This controls the filet that rounds the gopro tab corners, offset by this amount downwards.

I'd also like the design to incorporate these constants:
*   `eps1` and `eps2`: small values used for tolerances (you can start with `eps1=0.01; eps2 = eps1*2;`)
*   `gopro_tol`: small value used for tolerances with the gopro mount
* `gopro_filet`: the radius of the filet used to connect the flat sections to the torus.

The design should also include internal cavities. There should be a cavity running from the edge of the mounting base almost to the stem cutout, and a second cavity that goes a little deeper and is slightly less wide that the first cavity. The exact sizes of those cavities is not critical, but they should generally reduce the amount of material used and the weight of the final printed part.

It would be great if the design is clean and relatively easy to modify. I'd like to be able to adjust the main parameters and have the entire mount update automatically. I'd like you to use the standard OpenSCAD math and functions, no need for any external libraries.

Let me know if you need more details. I look forward to seeing what you come up with!

[Assistant]
brompton_gopro.scad:
```

// Brompton headset gopro mount.

$fn=100;

base_length = 55;

base_width = 28;

base_height = 23;

// Block corner radius
corner=4;

stem_diameter = 37;

stem_radius = stem_diameter/2;

side_margin = 2;

screw_space = 26;
screw_hole_diameter = 5.5;

stem_depth = stem_radius*(1 - cos(asin((base_width/2-side_margin)/stem_radius)));

eps1 = 0.01;
eps2 = eps1*2;

//========== START GOPRO CODE

// Gopro connector, based on http://www.thingiverse.com/thing:62800

// The locking nut on the gopro mount triple arm mount (keep it tight)
gopro_nut_d= 9.2;

// How deep is this nut embossing (keep it small to avoid over-overhangs)
gopro_nut_h= 2;

// Hole diameter for the 3-arm mount part
gopro_holed_three= 5.5;

// Thickness of the internal arm in the 3-arm mount part
gopro_connector_th3_middle= 3.1;

// Thickness of the side arms in the 3-arm mount part
gopro_connector_th3_side= 2.7;

// The gap in the 3-arm mount part for the two-arm
gopro_connector_gap= 3.1;

// How round are the 2 and 3-arm parts
gopro_connector_roundness= 1;

// How thick are the mount walls
gopro_wall_th= 3;

gopro_connector_wall_tol=0.5+0;

gopro_tol=0.04+0;

gopro_connector_z = (2 * gopro_connector_th3_side) + gopro_connector_th3_middle + (2 * gopro_connector_gap);

gopro_connector_x = gopro_connector_z;

gopro_connector_y = (gopro_connector_z / 2) + gopro_wall_th;

gopro_filet = 2;

module gopro_torus(r,rnd)
{
	translate([0,0,rnd/2])
		rotate_extrude(convexity= 10)
			translate([r-rnd/2, 0, 0])
				circle(r= rnd/2, $fs=0.2);
}

// This lowers the gopro tabs into the brompton base body.
gopro_tab_filet_offset= 2;

module gopro_tab_filet(th) {
  f = gopro_filet;
  dx = gopro_connector_z+2*f;
  dy = th+2*f;
  translate([0, gopro_connector_z/2 + gopro_wall_th+gopro_tol-gopro_tab_filet_offset ,th/2])
  rotate([90, 0, 0])
  difference() {
    translate([-dx/2, -dy/2, 0])
      cube([dx, dy, f]);

   for (side = [0:1]) {
      mirror([0, side, 0])
        translate([-dx/2-1, -dy/2, f])
           rotate([0, 90, 0]) cylinder(r=f, h=dx+2);

        mirror([side, 0, 0])
          translate([-dx/2, dy/2+1, f])
             rotate([90, 0, 0]) cylinder(r=f, h=dy+2);
    }
  }
}

// th = thickness.
module gopro_tab(th)
{
  hull()
  {
    // Bottom edge
    gopro_torus(r=gopro_connector_z/2, rnd=gopro_connector_roundness);

    // Top edge
    translate([0,0,th-gopro_connector_roundness])
      gopro_torus(r=gopro_connector_z/2, rnd=gopro_connector_roundness);

    // flat base
    translate([-gopro_connector_z/2, gopro_connector_z/2 + gopro_wall_th ,0])
      cube([gopro_connector_z, gopro_tol, th]);
   }

   // Filet
   gopro_tab_filet(th);
}

module gopro_connector() {
	difference() {
		union() {
      // Center tab
      translate([0,0,-gopro_connector_th3_middle/2])
          gopro_tab(gopro_connector_th3_middle);

      // Tow side tabs
      for(mz=[-1:2:+1]) scale([1,1,mz]) {
        translate([0,0,gopro_connector_th3_middle/2 + gopro_connector_gap])
          gopro_tab(gopro_connector_th3_side);
      }

			// add the optional nut emboss
    translate([0,0,gopro_connector_z/2-gopro_tol])
      difference() {
        cylinder(r1=gopro_connector_z/2-gopro_connector_roundness/2, r2=11.5/2, h=gopro_nut_h+gopro_tol);
        cylinder(r=gopro_nut_d/2, h=gopro_connector_z/2+3.5+gopro_tol, $fn=6);
      }
		}

		// remove the center hole
		translate([0,0,-gopro_tol])
			cylinder(d=gopro_holed_three, h=gopro_connector_z+4*gopro_tol, center=true, $fs=1);
	}
}

module gopro_main() {
rotate([-90, 0, 0])
translate([0, -gopro_connector_z/2-gopro_wall_th, 0])
gopro_connector();
}

//========== END GOPRO CODE

module block() {
   r1 = corner;
   r2 = 5;
   length_inset = 4;
   width_inset = 1;
   hull()
   for (mirrors = [[0, 0], [0, 1], [1, 0], [1, 1]]) {
     mirror([mirrors[0], 0, 0])
     mirror([0, mirrors[1], 0]) {
       translate([base_length/2-r1, base_width/2-r1, 0]) cylinder(r=r1, h=eps1);

      translate([base_length/2-r2-length_inset, base_width/2-r2-width_inset, base_height-r2]) sphere(r=r2);
    }
  }
}

module main() {

  difference() {
    union()
    {
      // Add block
     // rounded_surface(base_length, base_width, base_height, corner);
      block();

        // Add gopro connector
      translate([0, 0, base_height-gopro_tab_filet_offset-eps1]) gopro_main();
    }

    // Remove round stem
    // NOTE: this is a larger radius so using higher $fn.
    translate([-base_length/2-eps1, 0, -stem_diameter/2+stem_depth]) rotate([0, 90, 0])
        cylinder(d=stem_diameter, h=base_length+eps2, $fn=2*$fn);

    // Remove center cavity
    translate([-43/2, -9/2, -eps1]) cube([43, 9, 13+eps1]);

      // Remove secondary cavity.
    hull() {
      translate([-43/2, -16/2, -eps1]) cube([43, 16, 4]);
      translate([-43/2, -9/2, -eps1]) cube([43, 9, 10]);
    }

    // Remove screw holes
    for (side = [0:1]) {
      mirror([side, 0, 0]) translate([screw_space/2, 0, 0]) {
       // Screw hole
       translate([0, 0, -eps1])
         cylinder(d=screw_hole_diameter, h=base_height+eps2);

       // Screw hole head clearance
       translate([0, 0, base_height-eps1])
         cylinder(d=11.3, h=6);
      }
    }
  }
}

//block();

main();

//gopro_tab(gopro_connector_th3_middle);

```


[User]
Hey, I'm looking to create a customizable slider task reminder, like the one I've seen on Thingiverse (thing:2068177). I have some OpenSCAD files that I've been working on but honestly it's kind of a mess and I think it'd be a lot easier if I just started over with a proper, fully parametric design. I need something that I can use to quickly generate a top plate, a bottom plate with tracks, and the sliders. I'd like to be able to easily change the dimensions of the entire unit.

For the top plate, I need the ability to specify the text for multiple lines, the font, the font size, the positions of the text, and spacing between the lines. It will have cutouts to fit around the pegs of the sliders. I also need to define tabs that will snap into the bottom plate, placed at the center of each edge of the rectangle.

For the bottom plate, it will be a simple rectangle, also with tabs at the center of each edge, with tracks for the sliders to slide in, and a recessed area around the perimeter to form a lip. I need to be able to control the width and depth of the tracks, as well as their position along the length of the rectangle. I need to be able to specify the overall length, width, and height. I need to control the wall thickness of the lip. I'd also like to be able to specify the number of tracks.

For the sliders, I need to be able to specify the overall dimensions of the slider body, and the dimensions of the peg(s) that will fit into the tracks on the bottom plate. I should also be able to vary the height of the peg(s). I don't really care whether there's one or two pegs, but they all need to fit into the tracks. I'd need to be able to specify the number of sliders generated (likely based on the number of tracks in the bottom plate).

Ideally, I could specify the overall size of the rectangular plates, and then have all other dimensions be calculated based on that size.
I would also like for this to be done without relying on any libraries if at all possible.

Can you generate an OpenSCAD file for the top plate, bottom plate, and sliders? I should be able to customize everything about them using parameters at the top of the file(s).

[Assistant]
Top_Plate_V2.scad:
```
//$fn=50;
line1 = "DID YOU TAKE";
line2 = "YOUR PILLS?";
line3a = "AM";
line3b = "PM";
line4 = "SUN";
line5 = "MON";
line6 = "TUE";
line7 = "WED";
line8 = "THU";
line9 = "FRI";
line10 = "SAT";
//Font style and size. Go to Help->Font List, to see all available fonts.
Letter_Height = 1;
Font_Lines1to2 = "Liberation Sans:style=Bold";
Font_Size_lines1to2 = 5;
Font_Size_line3 = 4;
Font_Line3 = "Liberation Sans:style=Bold";
Font_Lines3to9 = "Liberation Sans:style=Bold";
Font_Size_lines3to9 = 5;
Day_Font_Position = -30;
AM_Position = -5;
PM_Position = 20.5;

module titles(line_num, alignment, font_type, fontsize, X_pos, Y_pos){
    translate ([X_pos, Y_pos, 1.5]) {

            linear_extrude(height = Letter_Height) {
    text(line_num, font = font_type, size = fontsize, halign = alignment, valign = "center");
                    }
                }
            }

module all_text(){
/////////////Task Title////////////////////////
titles(line1, "center", Font_Lines1to2, Font_Size_lines1to2, 0, 44);
titles(line2, "center", Font_Lines1to2, Font_Size_lines1to2, 0, 36);
//////////////AM PM////////////////////////////
titles(line3a, "center", Font_Line3, Font_Size_line3,AM_Position, 27);
titles(line3b, "center", Font_Line3, Font_Size_line3,PM_Position, 27);
/////////////Days of the Week//////////////////
titles(line4, "left", Font_Lines3to9, Font_Size_lines3to9, Day_Font_Position, 16.25+7/2);
titles(line5, "left", Font_Lines3to9, Font_Size_lines3to9, Day_Font_Position, 6.25+7/2);
titles(line6, "left", Font_Lines3to9, Font_Size_lines3to9, Day_Font_Position, -3.75+7/2);
titles(line7, "left", Font_Lines3to9, Font_Size_lines3to9, Day_Font_Position, -13.75+7/2);
titles(line8, "left", Font_Lines3to9, Font_Size_lines3to9, Day_Font_Position, -23.75+7/2);
titles(line9, "left", Font_Lines3to9, Font_Size_lines3to9, Day_Font_Position, -33.75+7/2);
titles(line10, "left", Font_Lines3to9, Font_Size_lines3to9, Day_Font_Position, -43.75+7/2);
    }

module base(){
translate([0,0,1.5/4]){

minkowski(){
    cube([70-2*7.53,100-2*7.53,1.5/2],center=true); //60mm X 100mm
    cylinder(r=7.53, h=1.5/2);
}
}
}

module slot(x,y){  //Cutout slot, (x,y) = position
translate([x,y,0]){
union(){
cube([8.5,7,1.5]);
translate([0,3.5,0]){
    cylinder(r=3.5,h=1.5);
}
translate([8.5,3.5,0]){
    cylinder(r=3.5,h=1.5);
}
}
}
}

//Create the baseplate with 7 cutout slots

module baseplate(){
difference(){
    base();
    slot(-9.25,16.25); //Sunday-AM
    slot(-9.25,6.25); //Monday-AM
    slot(-9.25,-3.75); //Tuesday-AM
    slot(-9.25,-13.75); //Wednesday-AM
    slot(-9.25,-23.75); //Thursday-AM
    slot(-9.25,-33.75); //Friday-AM
    slot(-9.25,-43.75); //Saturday-AM

    slot(16.25,16.25); //Sunday-PM
    slot(16.25,6.25); //Monday-PM
    slot(16.25,-3.75); //Tuesday-PM
    slot(16.25,-13.75); //Wednesday-PM
    slot(16.25,-23.75); //Thursday-PM
    slot(16.25,-33.75); //Friday-PM
    slot(16.25,-43.75); //Saturday-PM
}

}

module tab(angle){
rotate(a=angle, v=[0,0,1]){
rotate(a=-90, v=[0,1,0]){
rotate(a=90, v=[1,0,0]){
 linear_extrude(height = 9.5, center = true, convexity = 10, twist = 0, slices = 100, scale = 1.0) {
 polygon(points=[[0,0],[1.5/2,1.5],[1.5,0]]);
 }
 }
 }
 }
 }
 //Create the triangular connecting tabs
 module tabs(){

 translate([-70/2,0,0]){
 tab(0);
 }

translate([70/2,0,0]){
    tab(180);
}
translate([0,-100/2,0]){
    tab(90);
}

translate([0,100/2,0]){
    tab(270);
}
}

union(){
    baseplate();
    all_text();
    tabs();
}

```
Bottom_Plate-V2.scad:
```
//$fn=50;
L = 100; //Length of the plate, original = 100
W = 75; //Width of the plate, original = 75
H = 5.5; //Total Height, original = 5.5
wt = 2; //Wall thickness, original = 2

module base_outer(){
    translate([0,0,H/4]){
        minkowski(){
            cube([W-2*10,L-2*10,H/2],center=true);//75mmx105mm
            cylinder(r=10, h=H/2);
        }
    }
}
module base_inner(){
    translate([0,0,H/4+1.5]){
        minkowski(){
            cube([W-2*wt-2*8,L-2*wt-2*8,H/2],center=true);
            cylinder(r=8, h=H/2);
        }
    }
}
module baseplate(){ //Subtract inner from outer base
difference(){
    base_outer();
    base_inner();
}
}
module track_outer(){
translate([0,0,1.5]){
union(){
cube([34.25+12,11.5,2]);
translate([0,11.5/2,0]){
    cylinder(r=11.5/2,h=2);
}
translate([34.25+12,11.5/2,0]){
    cylinder(r=11.5/2,h=2);
}
}
}
}
module track_inner(){
translate([0,1.5,1.5]){
union(){
cube([34.25+12,8.5,2.5]);
translate([0,8.5/2,0]){
    cylinder(r=8.5/2,h=2.5);
}
translate([34.25+12,8.5/2,0]){
    cylinder(r=8.5/2,h=2.5);
}
}
}
}
module track(x,y){  //Subtract inner from outer track
    translate([x,y,0]){
difference(){
track_outer();
track_inner();
}
}
}
module tracks(){    //Combine 7 tracks

    union(){
    track(0,0);
    track(0,11.5-1.5);
    track(0,11.5*2-1.5*2);
    track(0,11.5*3-1.5*3);
    track(0,11.5*4-1.5*4);
    track(0,11.5*5-1.5*5);
    track(0,11.5*6-1.5*6);
    }
}
module track_sub(){ //Open left end of all tracks
    translate([-8.5,0,0]){
    cube([8.5,75,5]);
}
}
module tracks_final(x,y){ //Position all tracks
    translate([x,y,0]){
        difference(){
        tracks();
        track_sub();
    }
}
}
module base_tracks(){   //Combine tracks to baseplate
    union(){
        baseplate();
        tracks_final(W/2-46.25-13,-L/2+6.5);
    }
}

module tab(angle){  //Create triangular tabs
rotate(a=angle, v=[0,0,1]){
rotate(a=-90, v=[0,1,0]){
rotate(a=90, v=[1,0,0]){
 linear_extrude(height = 10.5, center = true, convexity = 10, twist = 0, slices = 100, scale = 1.0) {
 polygon(points=[[0,0],[1.75/2,1.5],[1.75,0]]);
 }
 }
 }
 }
 }
module tabs(){      //Position all tabs

 translate([-W/2+wt,0,H-2.2]){
 tab(0);
 }

translate([W/2-wt,0,H-2.2]){
    tab(180);
}
translate([0,-L/2+wt+0.06,H-2.2]){
    tab(90);
}

translate([0,L/2-wt-0.06,H-2.2]){
    tab(270);
}
}
module final(){     //Subtract tabs from baseplate
difference(){
base_tracks();
tabs();
}
}
final();

```


[User]
I want to create a parametric model of a dragon in OpenSCAD. I'm envisioning a dragon whose body follows a curved path, with individual segments along the body that have scales and small hair-like projections. The head should be detailed with horns, a mouth, eyes, and even little beard-like growths.

Specifically, I need:

*   **A curved body:** The dragon's body should follow a Bezier curve, with the curve controlled by several points. I want to be able to adjust the x-coordinates of control points 3, 4, 5, and 6 to change the body's shape, so those need to be parameters.
*   **Body segments:** Each segment of the dragon's body should include scales and small "hair" elements. They should be placed along the Bezier curve.
*   **Scales:** The scales should be created using a `scales` module that can be used at different angles, lengths, radii, heights, and thicknesses. The code I gave you uses the following angles: 60, 75, 100, 110, and 120 with various lengths radii, and thickness values. The scale module uses a linear extrude of a scaled circle.
*   **Hair:** The hair-like projections should be created using a series of rotated and translated linear extrudes of scaled circles.
*   **Detailed Head:** The head should be placed at the end of the body and include:
    *   **Horns:** Two horns, created with a linear extrude along a curve.
    *   **Mouth:** A mouth created using an ellipse extrude of a polygon shape formed from the `shape_trapezium` function, which is a part of the dotSCAD library. The shape trapezium should be used for both the inner and outer shapes. The mouth uses a series of ellipse extrusions of shape_trapeziums at various locations in the head.
    *   **Eyes:** Two eyes, each consisting of a sphere and a smaller sphere for the pupil.
    *   **Beard:** Two beard-like growths created with linear extrudes.
*   **Libraries:** I am using the `dotSCAD` library and specifically, `shape_trapezium`, `ellipse_extrude`, and `along_with`. Please incorporate these functions and modules from dotSCAD.

Could you generate the OpenSCAD code for this? I'm also using some internal functions such as `__angy_angz`, `__is_vector`, `__frags`, `__pie_for_rounding`, and all the `__tr_*` and `__br_*` private functions, which form the basis of the dotSCAD library. You will need to rewrite the implementations of these. I would like to have the full, working implementation. I want the code to be as parametric as possible, so I can easily adjust the dragon's shape and features. Don't worry about the exact numeric values in the example I gave you. I'm more concerned about getting the structure and modules right.

[Assistant]
dragon-prototype.scad:
```
x1 = 30;
x2 = 30;
x3 = 0;
x4 = 0;

// Commonly-used private API

function __angy_angz(p1, p2) =
    let(
        dx = p2[0] - p1[0],
        dy = p2[1] - p1[1],
        dz = p2[2] - p1[2],
        ya = atan2(dz, sqrt(pow(dx, 2) + pow(dy, 2))),
        za = atan2(dy, dx)
    ) [ya, za];

function __is_vector(value) = !(value >= "") && len(value) != undef;

function __frags(radius) = $fn > 0 ?
            ($fn >= 3 ? $fn : 3) :
            max(min(360 / $fa, radius * 6.28318 / $fs), 5);

function __pie_for_rounding(r, begin_a, end_a, frags) =
    let(
        sector_angle = end_a - begin_a,
        step_a = sector_angle / frags,
        is_integer = frags % 1 == 0
    )
    r < 0.00005 ? [[0, 0]] : concat([
        for(ang = [begin_a:step_a:end_a])
            [
                r * cos(ang),
                r * sin(ang)
            ]
    ],
    is_integer ? [] : [[
            r * cos(end_a),
            r * sin(end_a)
        ]]
    );

function __tr__corner_t_leng_lt_zero(frags, t_sector_angle, l1, l2, h, round_r) =
    let(t_height = tan(t_sector_angle) * l1 - round_r / sin(90 - t_sector_angle) - h / 2)
    [
        for(pt = __pie_for_rounding(round_r, 90 - t_sector_angle, 90, frags * t_sector_angle / 180))
            [pt[0], pt[1] + t_height]
    ];

function __tr_corner_t_leng_gt_or_eq_zero(frags, t_sector_angle, t_leng, h, round_r) =
    let(offset_y = h / 2 - round_r)
    [
        for(pt = __pie_for_rounding(round_r, 90 - t_sector_angle, 90, frags * t_sector_angle / 360))
            [pt[0] + t_leng, pt[1] + offset_y]
    ];

function __tr_corner(frags, b_ang, l1, l2, h, round_r) =
    let(t_leng = l2 - round_r * tan(b_ang / 2))
    t_leng >= 0 ?
        __tr_corner_t_leng_gt_or_eq_zero(frags, b_ang, t_leng, h, round_r) :
        __tr__corner_t_leng_lt_zero(frags, b_ang, l1, l2, h, round_r);

function __tr__corner_b_leng_lt_zero(frags, b_sector_angle, l1, l2, h, round_r) =
    let(
        reversed = __tr__corner_t_leng_lt_zero(frags, b_sector_angle, l2, l1, h, round_r),
        leng = len(reversed)
    )
    [
        for(i = [0:leng - 1])
            let(pt = reversed[leng - 1 - i])
            [pt[0], -pt[1]]
    ];

function __br_corner_b_leng_gt_or_eq_zero(frags, b_sector_angle, l1, l2, b_leng, h, round_r) =
    let(half_h = h / 2)
    [
        for(pt = __pie_for_rounding(round_r, -90, -90 + b_sector_angle, frags * b_sector_angle / 360))
            [pt[0] + b_leng, pt[1] + round_r - half_h]
    ];

function __br_corner(frags, b_ang, l1, l2, h, round_r) =
    let(b_leng = l1 - round_r / tan(b_ang / 2))
    b_leng >= 0 ?
    __br_corner_b_leng_gt_or_eq_zero(frags, 180 - b_ang, l1, l2, b_leng, h, round_r) :
    __tr__corner_b_leng_lt_zero(frags, 180 - b_ang, l1, l2, h, round_r);

function __half_trapezium(length, h, round_r) =
    let(
        is_vt = __is_vector(length),
        l1 = is_vt ? length[0] : length,
        l2 = is_vt ? length[1] : length,
        frags = __frags(round_r),
        b_ang = atan2(h, l1 - l2),
        br_corner = __br_corner(frags, b_ang, l1, l2, h, round_r),
        tr_corner = __tr_corner(frags, b_ang, l1, l2, h, round_r)
    )
    concat(
        br_corner,
        tr_corner
    );

function __trapezium(length, h, round_r) =
    let(
        r_half_trapezium = __half_trapezium(length / 2, h, round_r),
        to = len(r_half_trapezium) - 1,
        l_half_trapezium = [
            for(i = [0:to])
                let(pt = r_half_trapezium[to - i])
                [-pt[0], pt[1]]
        ]
    )
    concat(
        r_half_trapezium,
        l_half_trapezium
    );

/**
* bezier_curve.scad
*
* Given a set of control points, the bezier_curve function returns points of the Bézier path.
* Combined with the polyline, polyline3d or hull_polyline3d module defined in my lib-openscad,
* you can create a Bézier curve.
*
* @copyright Justin Lin, 2017
* @license https://opensource.org/licenses/lgpl-3.0.html
*
* @see https://openhome.cc/eGossip/OpenSCAD/lib-bezier_curve.html
*
**/

function _combi(n, k) =
    let(
        bi_coef = [
               [1],     // n = 0: for padding
              [1,1],    // n = 1: for Linear curves, how about drawing a line directly?
             [1,2,1],   // n = 2: for Quadratic curves
            [1,3,3,1]   // n = 3: for Cubic Bézier curves
        ]
    )
    n < len(bi_coef) ? bi_coef[n][k] : (
        k == 0 ? 1 : (_combi(n, k - 1) * (n - k + 1) / k)
    );

function bezier_curve_coordinate(t, pn, n, i = 0) =
    i == n + 1 ? 0 :
        (_combi(n, i) * pn[i] * pow(1 - t, n - i) * pow(t, i) +
            bezier_curve_coordinate(t, pn, n, i + 1));

function _bezier_curve_point(t, points) =
    let(n = len(points) - 1)
    [
        bezier_curve_coordinate(
            t,
            [for(p = points) p[0]],
            n
        ),
        bezier_curve_coordinate(
            t,
            [for(p = points) p[1]],
            n
        ),
        bezier_curve_coordinate(
            t,
            [for(p = points) p[2]],
            n
        )
    ];

function bezier_curve(t_step, points) =
    concat([
        for(t = [0: t_step: 1])
            _bezier_curve_point(t, points)
    ], [_bezier_curve_point(1, points)]);

/**
* along_with.scad
*
* Puts children along the given path. If there's only one child,
* it will put the child for each point.
*
* @copyright Justin Lin, 2017
* @license https://opensource.org/licenses/lgpl-3.0.html
*
* @see https://openhome.cc/eGossip/OpenSCAD/lib-along_with.html
*
**/

module along_with(points, angles, twist = 0, scale = 1.0) {
    leng_points = len(points);
    leng_points_minus_one = leng_points - 1;
    twist_step_a = twist / leng_points;

    function scale_step() =
        let(s =  (scale - 1) / leng_points_minus_one)
        [s, s, s];

    scale_step_vt = __is_vector(scale) ?
        [
            (scale[0] - 1) / leng_points_minus_one,
            (scale[1] - 1) / leng_points_minus_one,
            scale[2] == undef ? 0 : (scale[2] - 1) / leng_points_minus_one
        ] : scale_step();

    function _path_angles(i = 0) =
        i == leng_points_minus_one ?
                [] :
                concat(
                    [__angy_angz(points[i], points[i + 1])],
                    _path_angles(i + 1)
                );

    function path_angles(points) =
       let(angs = _path_angles())
       concat(
           [[0, -angs[0][0], angs[0][1]]],
           [for(a = angs) [0, -a[0], a[1]]]
       );

    angles_defined = angles != undef;
    angs = angles_defined ? angles : path_angles(points);

    module align(i) {
        translate(points[i])
            rotate(angs[i])
                rotate(angles_defined ? [0, 0, 0] : [90, 0, -90])
                    rotate(twist_step_a * i)
                         scale([1, 1, 1] + scale_step_vt * i)
                             children(0);
    }

    if($children == 1) {
        for(i = [0:leng_points_minus_one]) {
            align(i) children(0);
        }
    } else {
        for(i = [0:min(leng_points, $children) - 1]) {
            align(i) children(i);
        }
    }
}

/**
* shape_trapezium.scad
*
* Returns shape points of an isosceles trapezium.
* They can be used with xxx_extrude modules of dotSCAD.
* The shape points can be also used with the built-in polygon module.
*
* @copyright Justin Lin, 2017
* @license https://opensource.org/licenses/lgpl-3.0.html
*
* @see https://openhome.cc/eGossip/OpenSCAD/lib-shape_trapezium.html
*
**/

function shape_trapezium(length, h, corner_r = 0) =
    __trapezium(
        length = length,
        h = h,
        round_r = corner_r
    );

/**
* ellipse_extrude.scad
*
* Extrudes a 2D object along the path of an ellipse from 0 to 180 degrees.
* The semi-major axis is not necessary because it's eliminated while calculating.
*
* @copyright Justin Lin, 2017
* @license https://opensource.org/licenses/lgpl-3.0.html
*
* @see https://openhome.cc/eGossip/OpenSCAD/lib-ellipse_extrude.html
*
**/

module ellipse_extrude(semi_minor_axis, height, center = false, convexity = 10, twist = 0, slices = 20) {
    h = height == undef ? semi_minor_axis : (
        // `semi_minor_axis` is always equal to or greater than than `height`.
        height > semi_minor_axis ? semi_minor_axis : height
    );
    angle = asin(h / semi_minor_axis) / slices;

    module extrude(pre_z = 0, i = 1) {
        if(i <= slices) {
            f = cos(angle * i) / cos(angle * (i - 1));
            z = semi_minor_axis * sin(angle * i);

            translate([0, 0, pre_z])
                rotate(-twist / slices * (i - 1))
                    linear_extrude(
                        z - pre_z,
                        convexity = convexity,
                        twist = twist / slices,
                        slices = 1,
                        scale = f
                    ) children();

            extrude(z, i + 1)
                scale(f)
                    children();
        }
    }

    translate([0, 0, center == true ? -h / 2 : 0])
        extrude()
            children();
}

module scales(ang, leng, radius, height, thickness) {
    module one_scale() {
        rotate([0, ang, 0])
            linear_extrude(thickness, center = true)
                scale([leng, 1])
                    circle(1, $fn = 4);
    }

    for(a = [0:30:330]) {
        rotate(a)
            translate([radius, 0, height])
                one_scale();
        rotate(a + 15)
            translate([radius, 0, height + 1.75])
                one_scale();
    }
}

module one_segment() {
    // scales
    union() {
        scales(60, 5, 5, 0, 1.5);
        scales(75, 2.5, 5, -4, 1.25);
        scales(100, 1.25, 4.5, -7, 1);
        scales(110, 1.25, 3, -9, 1);
        scales(120, 2.5, 2, -9, 1);
    }

    // hair
    for(i = [0:5]) {
        rotate([15 -15 * i, 0, 0])
            translate([0, 3, -4])
                rotate([45, 0, 0]) rotate([0, 90, 0])
                    linear_extrude(2, center = true)
                        scale([3.5, 2, 1])
                            circle(3, $fn = 3);
    }

    scale([1, 1, 1.1]) sphere(5);

    // belly
    translate([0, -5, 1])
        rotate([-10, 0, 0])
            scale([1.1, 0.8, 1.1])
                sphere(5, $fn = 8);
}

module head(angy_angz) {

    module hair() {
        for(i = [18:35]) {
            rotate(i * 10)
                translate([0, -14, 0])
                    rotate([9, 0, 0])
                        linear_extrude(15, scale = 0, twist = 30)
                            translate([0, 10, 0])
                                circle(3, $fn = 3);
        }

        for(i = [0:35]) {
            rotate(i * 10)
                translate([0, -12, 0])
                    rotate([5, 0, 0])
                        linear_extrude(20, scale = 0, twist = 30)
                            translate([0, 10, 0])
                                circle(2, $fn = 3);
        }

        for(i = [0:35]) {
            rotate(i * 10)
                translate([0, -10, 0])
                    rotate([2, 0, 0])
                        linear_extrude(22, scale = 0, twist = -30)
                            translate([0, 10, 0])
                                circle(3, $fn = 3);
        }
    }

    module one_horn() {
        translate([-10, -4, -1])
            rotate([40, -25, 0])
                linear_extrude(30, scale = 0, twist = -90)
                    translate([7.5, 0, 0])
                        circle(3, $fn = 4);
    }

    module mouth() {
        translate([0, 0, -2])
            rotate([90, 0, -90])
                ellipse_extrude(8, slices = 2)
                    polygon(
                        shape_trapezium([4, 15],
                        h = 22,
                        corner_r = 0)
                    );

        translate([0, 0, -3])
            rotate([90, 0, -90])
                 ellipse_extrude(6, slices = 4)
                     polygon(
                        shape_trapezium([6, 20],
                        h = 20,
                        corner_r = 0)
                    );

        mirror([1, 0, 0])
            translate([0, 0, -3])
                rotate([85, 0, -90])
                    ellipse_extrude(4, slices = 2)
                        polygon(
                            shape_trapezium([6, 19],
                            h = 20,
                            corner_r = 0)
                        );
    }

    module one_eye() {
        translate([-5, 3, -2])
            rotate([-15, 0, 75])
                scale([1, 1, 1.5])
                    sphere(1.5, $fn = 5);
        translate([-5.5, 3.5, -2.5])
            rotate([-15, 0, 75])
                sphere(0.5, $fn = 12);
    }

    module one_beard() {
        translate([-11, -12, -11])
            rotate(180)
                linear_extrude(10, scale = 0, twist = 90)
                    translate([-10, -10, 0])
                        circle(0.75, $fn = 6);
    }

    rotate([0, angy_angz[0] + 15, angy_angz[1]])
        translate([0, 0, -25 / 2])
            scale(1.15) union() {
                hair();

                translate([0, 0, 2]) union() {
                    rotate(-90) union() {
                         one_horn();
                         mirror([-1, 0, 0]) one_horn();
                    }

                    mouth();

                    one_eye();
                    mirror([0, 1, 0]) one_eye();

                    one_beard();
                    mirror([0, 1, 0]) one_beard();
                }
            }
}

module dragon() {

    t_step = 0.015;

    p0 = [0, 0, 0];
    p1 = [0, 50, 35];
    p2 = [-100, 70, 0];
    p3 = [x1, 10, -35];
    p4 = [x2, 150, -40];
    p5 = [x3, 180, -3];
    p6 = [x4, 220, 30];

    path_pts = bezier_curve(t_step,
        [p0, p1, p2, p3, p4, p5, p6]
    );

    angy_angz = __angy_angz(path_pts[0], path_pts[1]);

    along_with(path_pts, scale = 0.6)  one_segment();
    head(angy_angz);
}

dragon();

```


[User]
Hey, I'm looking to generate a custom gold concentrator based on a design I've seen. I need an OpenSCAD file that I can use to tweak all the dimensions. It uses some external libraries for writing text (specifically, `write/Write.scad`) and another for build plate stuff (`utils/build_plate.scad`), so you'll need to keep those in mind. Let me break down the design:

It's basically a bowl with a cone in the middle, and a hose adapter on the side. The bowl has several parameters:

*   **Outer Diameter:** This should be a variable called `outerdiameter`, and default to 150.
*   **Bowl Height:** Let's call this `bowlhight` with a default of 70.
*   **Wall Thickness:** `thick` should be 1.8 to start.
*   **Roundness:** I guess this is `$fn` for the curves, so let's call that `roundness` with a default value of 80.
*   **Cone Height:** The central cone, `conehight` should be 42 to start.
*   **Cone Bottom Diameter Addition:**  This adds to the diameter at the base of the cone, and I'd like a parameter called `conebottomdiameter` set at 16.
*   **Lip Height:** The small lip at the top of the cone, `liphight`, is 0.3.
*   **Lip Rim Diameter:** The rounded rim at the top of the cone, `Liprimdiameter`, defaults to 0.6.

Now, the hose adapter is a little more complex:

*   **Adapter Size:**  This is the hose diameter for the adapter.  `adaptersize` should be 16.2.
*   **Adapter Length:**  `adapterlength`, which defaults to -15, lets me control how far it extends.
*   **Adapter Offset:** `adapteroffset` moves the adapter vertically; start with 6.
*   **Adapter Hole:** The hole in the adapter, `adapterhole`, should be 12.
*  **Additional wall thickness:** a variable called `adapterwall` that can be added to the adapter wall thickness. Default 1.
*   **Bottom Cone Height:**  There's a small bottom cone in the bowl; it's height `bottomconehight` should be 1.5.
*    **Flat Bottom Distance:** The radius of the cone's bottom surface where it is flat, `flatbottomdistance` defaults to 10.

There's also a few more things to add.
*   **Step Top:** A step added to the bottom cone `step` default at 25
*  **Center Hole Diameter:**  The hole in the center of the bowl, `centerholediameter`, should be 28.

Finally, I want to be able to add some text to the outside of the bowl and the inside of the bowl.
*   **Text:** This should be a variable `urtext` initialized to "DANNI".
*   **Text Height:** `urtext_height` will be the height of the text, defaulting to 20.
*   **Text Font:** for this please use "orbitron.dxf"
I'm thinking the outside text should be a ring of text, and the inside text can be a straight line.

The code you gave me also uses a `writecylinder` and a `writesphere` function which I assume are from the included `Write.scad` file.
I'd like the text to be editable from within the code.

Can you generate the SCAD files for this? Thanks!

[Assistant]
newbluecup.scad:
```
 /*This is a redesign of my older thing (https://www.thingiverse.com/thing:468085), wich was inspired by the Original Bluebowl Goldconcentrator
Daniel Spielmann, May 2017
 */
use <write/Write.scad>
use <utils/build_plate.scad>
use <Write.scad>

// Outer diameter of bowl
outerdiameter = 150;
// Hight of the bowl
bowlhight = 70;
// Bowl wall thickness
thick = 1.8;
// Roundness $fn
roundness =  80;
// Conehight
conehight = 42;
// Conebottomdiameter Addition
conebottomdiameter = 16;
// Liphight
liphight = 0.3;
// Liprim
Liprimdiameter = 0.6;
// Adaptersize hosediameter
adaptersize = 16.2;
// Adapterlength
adapterlength = -15;
// Adapteroffset
adapteroffset = 6;
// Adapterhole
adapterhole = 12;
// Additional Wall Thickness
adapterwall = 1;
// Bottomconehight
bottomconehight =1.5;
// Flatbottomdistance
flatbottomdistance = 10;
// Steptop
step = 25;
// Centerholediameter
centerholediameter = 28;
// Name
urtext = "DANNI";

urtext_height = 20; //[4:32]

//urfont= "orbitron"; //["Letters","BlackRose","orbitron","knewave","braille"]

/* [Hidden] */
adapterpos = conehight-liphight-Liprimdiameter-adapteroffset; // Adapterposition
conediameter = centerholediameter+(thick);

//urfont_dxf = str("write/",urfont,".dxf");

difference(){

 union(){
    bowl();
    hoseadapter();
    cone();

 }
   center();

                          rotate([0,0,180]) {
                               translate([0,0,bowlhight/2])
                        writecylinder(text=urtext,h=urtext_height, t=(thick/3),where=[0,0,0], radius=(outerdiameter/2), font = "orbitron.dxf");

                          }

    }//diff

module bowl(){
      difference(){
            union(){
                          difference(){
                                    //wall
                    cylinder(  h=(bowlhight),d=(outerdiameter), $fn = roundness*1.5);
                    translate([0,0,-1])
                    cylinder(  h=(bowlhight)+2,d=(outerdiameter-(2*thick)), $fn = roundness*1.5);

                                    } //wall
                    bottomcone();
                    cylinder(  h=(thick),d=(outerdiameter), $fn = roundness);

                        }//union

                    adapterhole();

                        translate([0,0,thick])
                        writesphere(text="SPILIS Concentrator ", t=0.4,where=[0,0,thick/2], radius=(outerdiameter/2), font = "orbitron.dxf", west=20);

                    }
} //modul
module hoseadapter(){
              difference(){
        rotate([90,0,0]) {
              difference(){
    translate([(outerdiameter/2)-(adaptersize/2)-thick-adapterwall,adapterpos,0])
 cylinder(  h=((outerdiameter/2)+thick+adapterlength),d=adaptersize +thick+adapterwall, $fn = roundness);

    translate([(outerdiameter/2)-(adaptersize/2)-thick-adapterwall,adapterpos,0])
  cylinder(  h=((outerdiameter/2)+(2*thick)+adapterlength),d=adaptersize, $fn = roundness);
        }//diff
        }//rot
    cylinder(  h=(bowlhight)+2,d=(outerdiameter-(2*thick)), $fn = 100);
    }
}  //modul

module adapterhole(){

        rotate([90,0,0]) {

    translate([(outerdiameter/2)-(adaptersize/2)-thick-adapterwall,adapterpos,0])
  cylinder(  h=((outerdiameter/2)+(2*thick)+adapterlength),d=adapterhole, $fn = roundness);

        }//rot

}  //modul

module center(){
    translate([0,0,-(2*thick)])
 cylinder(  h=(bowlhight)+(2*thick),d1=(centerholediameter),d2=(centerholediameter), $fn = roundness);

}//modul

module bottomcone(){

    translate([0,0,+thick])
 cylinder(  h=(bottomconehight),d1=(outerdiameter)-(flatbottomdistance*2),d2=(centerholediameter)+(2*thick)+(2*step), $fn = roundness);

}//modul

module cone(){
    union(){

                    translate([0,0,0])
                    cylinder(  h=(conehight),d1=(conediameter+(2*conebottomdiameter)),d2=(conediameter), $fn = roundness);

                    translate([0,0,conehight])
                    cylinder(  h=(liphight),d=(conediameter), $fn = roundness);
    }

    rotate_extrude(angle = 360, $fn = roundness ) {
    translate([conediameter/2,conehight+liphight,0])
    rotate([0,0,0]) {
    circle($fn = roundness, r = Liprimdiameter);
      } //rot
  } //rotextr
}//modul

```