[User]
Okay, I'm looking to create a compliant clip, similar to the one described in the provided code, but I want a more generalized version that's easier to customize and extend. I like the overall design, with the spring arms, handle, and teeth for gripping, but I want to be able to adjust things like the number of spring leaves, the shape of the handles, and the teeth pattern much more easily. I'd also like to be able to choose between different types of hinge connections, rather than just the cylindrical hinge that's currently being used.

Specifically, I would like to have these adjustable parameters:

*   **Overall Clip Height:** The height of the printed clip.
*   **Spring Leaf Straight Length:** The length of the straight section of each spring leaf.
*   **Spring Leaf Thickness:** The thickness of each spring leaf, which affects stiffness.
*   **Spring Diameter:** The diameter of the spring coil section of the leaf.
*   **Number of Spring Leaves:** How many spring leaves on each side of the clip.
*    **Spring Leaf Rotation Increment:** The rotation angle between each spring leaf.
*   **Handle Width:** The width of the handle.
*   **Handle Shape:** Allow for different handle shapes (e.g., rectangular, rounded, custom profile defined by a list of points).
*   **Hinge Type:** A selection between different hinge types like a simple cylinder (like the existing design), a living hinge, or a ball and socket type hinge, perhaps with parameters specific to each type.
*   **Hinge Diameter:** The diameter of the hinge pin, where applicable.
*   **Hinge Clearance:** The gap between the hinge pin and the hole, to allow for easy printing and motion.
*  **Teeth XY Dimension:** The overall size of the square area used by one tooth.
*  **Teeth Gap:** The gap between teeth.
*   **Number of Teeth:** The number of teeth for the gripping part.
*   **Teeth Style**: The style of the teeth (e.g., simple rectangular teeth or a more complex sawtooth shape)

I want the code to be modular, with separate modules for the spring leaf, handle, hinge, and teeth section so it's easier to modify individual parts. Also, I'd like to avoid magic numbers as much as possible and use variables to define everything to make future modifications easier.  I'd also like to avoid relying on external libraries, so I'd prefer that you write all of the required code including the `cylinder2` module as part of this project, and I understand that you will be writing this from scratch.

Could you please generate the necessary OpenSCAD code for this?

[Assistant]
CompliantClip.scad:
```
//  0.0.1 L Gellatly 2021/12/13 Compliant Clip
//
//use <cylinder2.scad>;
// Overall Clip height (as printed)
clip_height=8;       // [5:30]
// Straight part of each spring leaf
leaf_straight=10;   // [6:16]
// Diameter of hinge ball
hinge_diameter = 15;   // [10:20]
// Width of each handle
handle_width = 8;  // [5:15]
// Thickness of each spring leaf (larger is stiffer)
leaf_thickness=1.6;     // [0.2:0.1:2.6]

/* [Hidden] */
// Build with
// Shell = 4;
// Infill = 30;
// Brim = 5;

spring_d=4+leaf_thickness;     // Diameter of each spring
spring_ri=spring_d/2-leaf_thickness;
spring_inc_rot=5;
gap=0.4;
teeth_xy=7;
teeth_gap=gap+teeth_xy/2; // H
teeth=4;    // Number of teeth

module leaf(){
    translate([leaf_straight/2,0,-0]){
    color("pink") translate([leaf_straight/2,(spring_ri+spring_d/2)/-2,0]) cylinder2(h=clip_height,d=spring_d,ri=spring_ri,sd=spring_inc_rot-90,deg=180-spring_inc_rot); // Half Tube
    color("red") translate([0,0,clip_height/2]) cube([leaf_straight,leaf_thickness,clip_height],center=true);
    color("orange") translate([-leaf_straight/2,(spring_ri+spring_d/2)/2,0]) cylinder2(h=clip_height,d=spring_d,ri=spring_ri,sd=90+spring_inc_rot,deg=180-spring_inc_rot); // Half Tube
    }
    translate([-(.15+sin(spring_inc_rot)*spring_ri), spring_ri+spring_d/2, 0])
    rotate([0,0,spring_inc_rot]) translate([0,leaf_thickness/-2,0]) cube([leaf_straight+.05,leaf_thickness,clip_height]);
}

module spring(){
    translate([-200,0,0]) for(ang=[0:6]) rotate([0,0,ang*(2.35+(leaf_straight-5)*0.014)]) // was 2.35=1 1.8=2
       translate([200-ang*0.4,0.8,0]) leaf();
}

module handle(){
    translate([0,handle_width/-2,0]) cube([100,handle_width,clip_height]);                  // Main part of handle
    translate([100,0,0]) cylinder2(h=clip_height,d=handle_width,sd=-90,deg=180); // Rounded end
}

module clip(){
    translate([80,-25.5,0]) rotate([0,0,-2*spring_inc_rot])
    spring();
    color("blue") translate([0,-7,0]) rotate([0,0,-16.7]) handle();
    color("gray") translate([0,-10.7,0]) cube([(teeth-.5)*teeth_xy,10.7,clip_height]);
    color("green") cylinder2(h=clip_height,d=teeth_xy,sd=-90,deg=180,$fn=2);
    color("lightgreen") for(inc=[1:teeth-1]) translate([inc*teeth_xy,0,0]) cylinder2(h=clip_height,d=teeth_xy,$fn=4);
    color("yellow") for(inc=[0:teeth-2]) translate([(teeth-.5)+inc*teeth_xy,teeth_gap,0]) cylinder2(h=clip_height,d=teeth_xy,$fn=4);
    color("lightyellow") translate([(teeth-.5)*teeth_xy,teeth_gap,0]) cylinder2(h=clip_height,d=teeth_xy,sd=90,deg=180,$fn=2);
    translate([0,3.6,0]) cube([(teeth-.5)*teeth_xy,10.6,clip_height]);
    color("lightblue") translate([0,10.5,0]) rotate([0,0,15]) handle();
    color("black") translate([50,0,0]) cylinder2(h=clip_height,d=hinge_diameter);
    color("black") translate([49,3.6,0]) rotate([0,0,15]) translate([5/-2,0,0]) cube([5,16,clip_height]);
    color("black") translate([50,0,0]) cylinder2(h=clip_height,d=hinge_diameter+2*5,sd=86,deg=39,efn=2);
    color("red") translate([50,0,0]) cylinder2(h=clip_height,d=hinge_diameter+2*5,ri=gap+hinge_diameter/2,sd=127,deg=280);
    color("pink") translate([45,-17,0]) rotate([0,0,-15]) translate([5/-2,0,0]) cube([5,8.5,clip_height]);/**/
}

clip();

// cylinder2: !! Partly commented out so customizer will work !!
// Laurie Gellatly v1.0.0 2021-07-24
// Laurie Gellatly v1.0.1 2021-12-13 Allow for $fn < 3 when deg !=360 (draw triangles as part circles with center offset)
// Extended circle and cylinder primitives

// efn = Number of faces on the ends of a partial ring/annulus
// efn=0 Use $fn faces for efn of rings, straight line for circles
// efn=1 Use straight line for both
// efn>1 Use efn faces for end of rings, 2 straight lines to circle center
// ri, ri1, ri2 Radius Inside
// sd = Start Degrees
// deg = Degrees to draw

module circle2(r=0, d=0, ri=0,sd=0,deg=360,efn=1,$fn=$fn) {
    cylinder2(r=r, d=d, ri=ri,sd=sd,deg=deg,efn=efn,$fn=$fn); // Only cylinder2 and circle2 will be exposed as names
}

module cylinder2(h=0, r1=0, d=0, r=0, r2=0, ri=0,sd=0,deg=360,efn=1,ri1=-1, ri2=-1, $fn=$fn){
    function calc_dps(deg,d,$fn=$fn) = deg/(($fn>=3||($fn>1&&0!=deg%360))?$fn:($fn>0?3:ceil(max(min(deg/$fa,d*PI/$fs),5))));

    function arc2(r,sd,end_deg, dps) = [for(rad=[sd:dps:end_deg]) [cos(rad)*r,sin(rad)*r]];

    function end2(r,sd,hring,dps,offset) = [for (rad=[offset+sd+dps:dps:offset+180+sd]) [cos(sd), sin(sd)]*(r-hring)+[cos(rad),sin(rad)]*hring];

    if(h==0){   // Do circle
        r=(r>0)? r: d*0.5;
        hring = 0.5*(r-ri);     // Half ring = radius of curved end
        deg=min(deg,360);       // Can't be more than 1 turn
        dps=calc_dps(deg,r*2,$fn);
        dpse=calc_dps(deg,r-ri,$fn=(efn==0)?$fn:2*efn);
        points = concat(arc2(r=r,sd=sd,end_deg=sd+deg,dps=dps),
            (ri!=0 && efn!=1)? end2(r=r,sd=sd+deg,hring=hring,dps=dpse,offset=0):[],
            (ri!=0)? arc2(r=ri,sd=sd+deg,end_deg=sd,dps=-dps):[],
            (ri!=0 && efn!=1)? end2(r=r,sd=sd,hring=hring,dps=dpse,offset=180):[],
            (ri==0 && deg!=360 && efn>1)? [[0,0]]:[]);
        paths = [ [for (rad=[0:1:len(points)-1]) rad]];
        polygon(points = points, paths = paths, convexity = 1);
    } else {    // Do Cylinder
        r2=(r2>0)? r2: (d>0)? d*0.5 : 1;
        r1=(r1>0)? r1: (d>0)? d*0.5 : r;
        if(ri1 == -1 && ri2 == -1)
            linear_extrude(h,scale=r2/r1) circle2(r=r1, d=d, ri=ri, sd=sd, deg=deg, efn=efn, $fn=$fn);
        else{
            hring1 = 0.5*(r1-ri1);    // Half the ring
            hring2 = 0.5*(r2-ri2);    // Half the ring
            deg=min(deg,360); // Can't be more than 1 turn
            efn = (deg==360)? 1: efn;   // Force a straight line end on full circle
            dps=calc_dps(deg,r1*2,$fn);
            dpse=calc_dps(deg,r1-ri1,$fn=(efn==0)?$fn:2*efn);
            points1 = concat(arc2(r=r1,sd=sd,end_deg=sd+deg,dps=dps),
              (efn!=1)? end2(r=r1,sd=sd+deg,hring=hring1,dps=dpse,offset=0):[],
              arc2(r=ri1,sd=sd+deg,end_deg=sd,dps=-dps),
              (efn!=1)? end2(r=r1,sd=sd,hring=hring1,dps=dpse,offset=180):[],
              (deg!=360 && efn==2 && ri1 == -1 && ri2 == -1)? [[0,0]]:[]);
            points2 = concat(arc2(r=r2,sd=sd,end_deg=sd+deg,dps=dps),
              (efn!=1)? end2(r=r2,sd=sd+deg,hring=hring2,dps=dpse,offset=0):[],
              arc2(r=ri2,sd=sd+deg,end_deg=sd,dps=-dps),
              (efn!=1)? end2(r=r2,sd=sd,hring=hring2,dps=dpse,offset=180):[],
              (deg!=360 && efn==2 && ri1 == -1 && ri2 == -1)? [[0,0]]:[]);
            lpts=len(points1);   // Same length as points2
            hlpts=lpts*0.5;     // 1st half is outside points
            oefn=(deg==360)?2:1;
            points = concat([for(ind=[0:lpts-1]) [points1[ind][0],points1[ind][1],0]], [for(ind=[0:lpts-1]) [        points2[ind][0],points2[ind][1],h]]);   // Bottom then top
            faces=concat([[for(ind=[0:lpts-1]) ind]], [for(ind=[0:hlpts-oefn]) [ind,lpts+ind,lpts+ind+1,ind+1]],[for(ind=[hlpts:lpts-oefn]) [ind,lpts+ind,lpts+(ind+1)%lpts,(ind+1)%lpts]],[[for(ind=[lpts+lpts-1:-1:lpts]) ind]]);
            polyhedron( points = points, faces = faces, convexity = 10);
        }
    }
}

```


[User]
I'm looking to design a highly customizable pipe plug for a friction fit. I need it to be parametric so I can easily adjust the dimensions. I envision a plug with a main body that has an internal taper, possibly split into two sections with different tapers, plus a cap on top. The body will also have slices or "fingers" cut into it to enhance the friction fit. Finally, I'll need a way to make it hollow.

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

**Facets:**
*   `$fn`: The number of facets for curves (adjustable from 3 to 60, default 30)

**Extrusion:**
*   `$EC`: Extrusion compensation (adjustable from 0 to 1 in steps of 0.01, default 0.4)

**Body:**
*   `IH`: Internal Height of the plug (adjustable from 5 to 30 in steps of 0.01, default 10)
*   `Split_P`: The point where the internal taper splits into two sections, expressed as a fraction of the internal height (adjustable from 0.2 to 0.7 in steps of 0.01, default 0.7).  This will be where the tapers change direction.
*  `Int_PD`: Internal Pipe Diameter (face to face, adjustable from 4 to 50 in steps of 0.01, default 16)
*   `TOff`: Internal Taper Offset (adjustable from 0.5 to 4 in steps of 0.01, default 1) - this is how much smaller to make the diameter at the narrowest taper.
*   `CF`: I can specify this as 1/cos(180/$fn), used to calculate the diameter given the face-to-face diameter

**Cap:**
*   `Cap_D`: Cap Diameter (adjustable from 2 to 75 in steps of 0.01, default 17)
*   `Cap_H`: Cap Height (adjustable from 2 to 75 in steps of 0.01, default 2)
*   `Cap_Taper`: Cap Taper (adjustable from 0 to 1 in steps of 0.01, default 0.1)

**Slices:**
*   `Num_Slice`: Number of slices or fingers (adjustable from 3 to 15, default 6)
*   `Wal_Thk`: Wall Thickness (adjustable from 1 to 10 in steps of 0.01, default 2)
*   `Gap`: Gap between slices (adjustable from 0.5 to 2 in steps of 0.01, default 1)
*   `Z_Off`: Distance from the cap to the start of the slices (adjustable from 0 to 1 in steps of 0.01, default 0.1)
*   `Phase`: Phase offset of the slices (adjustable from 0 to 60 degrees, default 0)

I need the final design to use the `difference()` function to create a hollow space inside the plug, using the specified wall thickness. The main body should be created using a cylinder with the specified taper.  The slices should be cube shapes that are rotated and translated to achieve the desired design, and should extend beyond the main body.

Could you generate the necessary OpenSCAD code for this design?  I'm not using any external libraries, so everything should be within a single .scad file.

[Assistant]
hole_plug.scad:
```

/* [Facets] */

$fn = 30;        // [3:60]

/* [Extrusion] */

$EC = 0.4;       // [0:.01:1]

/* [Body] */

// Internal Height
IH      = 10;    // [5:.01:30]

// Split Point
Split_P = .7;    // [.2:.01:.7]

// Internal Pipe Diameter (face to face)
Int_PD  = 16;    // [4:.01:50]

//Internal Taper Offset
TOff    = 1;     // [ .5:.01:4]

//cosine factor
CF= 1/cos(180/$fn);

/* [Cap] */

Cap_D = 17;      // [2:.01:75]
Cap_H = 2;       // [2:.01:75]
Cap_Taper = .1;   // [0:.01:1]

/* [Slices] */
// Number of slices
Num_Slice = 6;        // [3:15]

// Wall Thickness
Wal_Thk = 2;     // [1:.01:10]

// Gap between slices
Gap = 1 ;        // [.5:.01:2]

// Distance from Cap to Slice
Z_Off  = .1;     // [0:.01:1]

// Slice Phase
Phase = 0;       // [0:60]

difference() {
   Body();
   slots();

   // Hollow
   translate([0,0,-.01])
   cylinder(d=(Int_PD-2*Wal_Thk)*CF-$EC, h=IH);
}

module Body() {
   // Bottom Taper
   cylinder(d1=(Int_PD-TOff)*CF-$EC, d2=Int_PD*CF-$EC, h=IH*Split_P);

   // Top Taper
   translate([0,0,IH*Split_P-.01])
   cylinder(d1=Int_PD*CF-$EC, d2=(Int_PD-TOff)*CF-$EC, h=IH*(1-Split_P)+.02);

   // Cap
   translate([0, 0, IH-.01])
   cylinder(d1=Cap_D*CF, d2=Cap_D*(1-Cap_Taper)*CF,h= Cap_H);
}

module slots() {
   h= IH *(1 - Z_Off);

   rotate([0,0,Phase])
   for(i = [0:Num_Slice]) {
      rotate([0,0,i*360/Num_Slice])
      translate([Int_PD/2,0,h/2-.01])
      cube([Int_PD+1,Gap,h],center=true);
   }
}

```


[User]
Hey, I'm looking to design a combination square ruler for 3D printing, and I need some help with the OpenSCAD code. I want it to be fully parametric so I can adjust the dimensions easily. I have some ideas about the layout and features, and I’ve even got some starting code.  I'll describe it, and it's probably easiest if you just write the full SCAD files out for me.

Basically, the ruler will have a main body, a T-shaped end, and an angled section. It should have holes for marking with a pen or pencil, as well as markings and text for measurements. I want to be able to switch between metric and imperial, so the code needs to handle that.

Here's what I'm thinking for the main features, and I'll try to be as clear as I can with what I’ve tried. I've been playing around with using rcube for the rounded edges, if that helps.

**General Parameters:**

*   `width`: Overall width of the main ruler body (not including the angled part or the "T").
*   `length`: Length of the ruler body.
*   `thickness`: Thickness of the ruler.
*   `anchor_width`: Total width of the base "T" end.
*   `anchor_depth`: Depth of the base "T" part, also its depth below the main body.
*   `anchor_length`: Length of the base "T" extension, its height perpendicular from the bottom.
*   `roundness`: Radius for rounded corners.
*   `pen_width`: Diameter of the pen holes.
*   `steps`: Number of steps (holes) per unit length, will need to be different for metric and imperial.
*   `angle_size`: Size of the angled edge, to make it useful for marking.
*   `text_area`: The space for numbers beside the main body on the "T" side.
*   `text_height`: Height of the text labels.
*   `text_depth`: Depth of the text labels.
*   `line_thickness`: Thickness of the measurement marker lines.
*   `marker_size`: Size of the triangle markers.
*   `details`: Resolution of rounded elements, used for `$fn` variable.
*    `half_marker`: A string to be used for the half marker, usually set to "½".
*   `extra`: Extra length that can be added at the end of the ruler, probably used for text.
*   `mm_per_line` or a similar variable for imperial to control how often a line is drawn; different for metric vs. imperial.
*   `segments_per_line`: A variable for the imperial version, to control how many steps there are per inch.

**Main Body:**

*   Should be a rounded rectangle with parameters for size and roundness.
*   The 'T' end needs to have a base that sticks out perpendicular to the rest of the ruler, a rounded cube shape.

**Angled Section:**

*   An angled edge on the opposite side of the "T" extension.
*    The edge needs to be cut out so it's a useful marking edge.

**Pen Holes:**

*   The main ruler body has holes along its length, spaced out at even intervals.
*   The hole spacing should be controlled by the `steps` parameter.
*   A secondary hole needs to be along the zero point.
*   The holes are probably best done with `cylinder` and a `difference()`.

**Markings and Text:**

*   Text labels should be placed beside the main ruler body.
*   The text should be based on the distance of the current major line from the start of the ruler.
*   Triangle markers should be placed on both the main body side, and the angled side.
*   Small lines should also be added alongside the triangles.
*   Half markers should be placed at intervals, and need to be offset from the main line a bit.

**Metric and Imperial:**

*   I'll need two versions: one for metric and one for imperial, which will require slightly different steps and the spacing calculation. The imperial version will need to calculate distance in inches rather than mm.
*   The imperial version will probably have more than one step per line of markings.

**Code Structure:**

*   I've done some work on the rounding code, which uses `rcube()` and `rrect()`. I'd like you to include this code, along with `wedge()`, `star()`, and `ngon()`.
*   I'm open to other ways of doing this, but I do like using let() to set variables.

I think that’s everything. I'm happy to answer any questions. Could you provide the full `.scad` files for both metric and imperial versions?

[Assistant]
T_nocommon.scad:
```

width        = 24;
length       = 200;
thickness    = 3;
anchor_width = 60;
anchor_depth = 6;
anchor_length= 18;
roundness    = 5;
pen_width    = 0.8;
steps        = 10;
angle_size   = 20;

text_area      = 10;
text_height    = 6;
text_depth     = 1;
line_thickness = 1;
marker_size    = 2;
details        = 32;
half_marker    = "½";
extra          = 0;//text_height+line_thickness*2+rstraight_off(r);
mm_per_line    = 5;

$fn = details;

/* [hidden] */
//end of the T area x axis
tend = -width/2 - text_area;

//end of the angled area x axis
aend = width/2;

//rotate(-45)
difference() {
   union() {
      //main body
      translate([
         tend,
         -anchor_depth
      ])
      rcube([
         width+text_area,
         length+anchor_depth+extra,
         anchor_length+thickness
      ], tight=true, r=roundness);
      echo(anchor_width-angle_size-width-text_area-pen_width*2-line_thickness);
      //base
      translate([
         -(anchor_width-angle_size-width-text_area-pen_width*2-line_thickness)/2-pen_width*2-line_thickness+tend,
         -anchor_depth
      ])
      rcube([
         anchor_width,
         anchor_depth*2,
         anchor_length+thickness
      ], tight=true, r=roundness);
   }

   //main thinning
   translate([
      -roundness+tend-anchor_width,
      0,
      thickness])
   cube([
      (width+anchor_width*2)+roundness*2+text_area,
      length+extra+roundness,
      anchor_length+0.1
   ]);

   //base clear T side
   translate([
      -width-anchor_width+tend,
      0, -0.05
   ])
   cube([
      width+anchor_width,
      anchor_depth+roundness+pen_width,
      thickness+0.1
   ]);

   //base clear angle side
   translate([aend, 0, -0.05])
   cube([
      width+anchor_width,
      anchor_depth+roundness+pen_width,
      thickness+0.1
   ]);

   //T pen clearance
   translate([
      tend-pen_width*2,
      -pen_width,
      -0.05
   ])
   cube([
      pen_width*2,
      anchor_depth+roundness+pen_width,
      thickness+0.1
   ]);

   //Zero hole pen clearance
   translate([
      tend-pen_width*2,
      -pen_width,
      thickness
   ])
   wedge([
      width+pen_width*2+text_area,
      pen_width+0.1,
      pen_width
   ], 0, 3);

   //width of hole area?
   holeareaw = width - pen_width*1.667*2 - line_thickness*2;

   //*** CREATE HOLES
   for(s = [0:length*steps/10]) {
      //distance from the start
      dist = s * 10 / steps;

      linecompletion = (dist%mm_per_line) / mm_per_line;

      //hole
      translate([
         linecompletion * (width + holeareaw/(steps-1) - pen_width*1.667*2-line_thickness*2)-holeareaw/2,
         dist, -0.1
      ])
      cylinder(r1 = pen_width*1.667, r2 = pen_width, h = thickness + 0.2);

      //text and major ruler marks
      if(s%steps == 0) {
         //text
         translate([
            tend + line_thickness,
            dist + line_thickness*3/2,
            -0.01
         ])
         linear_extrude(height=text_depth)
         mirror([1,0])
         text(
            str(dist/10),
            text_height,
            "sans:bold",
            halign="right"
         );

         //angled side markers: triangle
         translate([
            width/2 - line_thickness,
            dist,-0.01
         ])
         linear_extrude(height=text_depth)
         polygon(ngon(marker_size, 3));

         //angled side markers: line
         translate([width/2-line_thickness-marker_size, dist-line_thickness/2,-0.01])
         cube([line_thickness, line_thickness, text_depth]);

         //half markers
         if(half_marker != "") {
            translate([
               aend-line_thickness,
               dist+5,
               -0.01
            ])
            linear_extrude(height=text_depth)
            polygon(ngon(marker_size/1.2, 3));
         }

         //T side markers
         translate([tend + line_thickness, dist - line_thickness/2, -0.01]) {
            //line
            cube([text_area, line_thickness, text_depth]);

            //triangle
            translate([
               -marker_size/5,
               line_thickness/2
            ])
            rotate(180)
            linear_extrude(height=text_depth)
            polygon(ngon(marker_size, 3));

            //half markers
            if(half_marker != "") {
               translate([
                  -marker_size/5,
                  line_thickness/2 + 5 //add 5 to offset half
               ])
               rotate(180)
               linear_extrude(height=text_depth)
               polygon(ngon(marker_size/1.2, 3));
            }
         }
      }
   }

   //Half hole marker
   //translate([text_area, 0])
   if(
      steps%2 == 0 && //only if even number of steps
      half_marker != "" && //marker text is set
      mm_per_line == 10 //single line per segment
   ) {
      //line
      translate([
         0.5 * (width + holeareaw/(steps-1) - pen_width*1.667*2-line_thickness*3)-holeareaw/2,
         5-pen_width*4, -0.1
      ])
      cube([line_thickness, length+extra-(5-pen_width*4), text_depth]);

      //text
      translate([
         5/10*(width+holeareaw/(steps-1)-pen_width*1.667*2-line_thickness*2)-holeareaw/2+line_thickness,
         5-pen_width*4-line_thickness-text_height,
         -0.01
      ])
      linear_extrude(height=text_depth)
      mirror([1,0])
      text(half_marker, text_height, "sans:bold", halign="c");
   }
}

//angle ruler
difference() {
   linear_extrude(height = thickness)
   polygon([
      [aend, 0],
      [aend+angle_size-pen_width, 0],
      [aend, angle_size-pen_width],
   ]);

   translate([width/2+5, 5, -0.01])
   cylinder(r=3, h=thickness+0.02);
}

function rextend_offset(x) = -x / sqrt(2);

function rextend_size(x) = 2 * x / sqrt(2);

function rstraight_off(r) = (r - r / sqrt(2));

function rextend_r(x) = x;

function tr(d, x, y) = [for(i=d) [i[0] + x, i[1] + y]];

function reverse(d) = [for(i=[len(d)-1:-1:0]) d[i]];

module rcube(d, r = 1, sides = 64, tight = false, center = false, extend = 0) {
    p = tight ? extend : extend / sqrt(2);

    translate(center ? [0,0] : [-p,-p])
    linear_extrude(height=d[2])
    rrect([d[0] + p * 2, d[1] + p * 2, d[2]], r + extend, sides, tight, center);
}

module rrect(d, r = 1, sides, tight = false, center = false) {
    polygon(rrect_coords(d, r, $fn = sides, tight = tight, center = center));
}

module wedge(d, reverse = false, rot = 0) {
    rotdims  = [[0,1,2], [1, 0, 2], [0, 1, 2], [1, 0, 2]];
    rotmoves = [[0,0], [d[0], 0], [d[0], d[1]], [0, d[1]]];

    x = d[rotdims[rot][0]];
    y = d[rotdims[rot][1]];
    z = d[rotdims[rot][2]];

    translate([rotmoves[rot][0], rotmoves[rot][1], reverse ? z : 0])
    mirror([0,0,reverse ? 1 : 0])
    rotate(rot * 90)
    translate([0,y, z])
    rotate([0,90,-90])
    linear_extrude(height = y)
    polygon([
            [0, 0],
            [z, 0],
            [z, x]
        ], 2
    );
}

function rrect_coords(d, r=1, $fn = 64, tight = false, center = false) =
let(
    diff = tight ? r - r / sqrt(2) : 0,
    dim  = [d[0]-diff*2, d[1]-diff*2, d[2]],
    rd   = r / sqrt(2),
    ad   = 90 / $fn * 4,
    pos  = [
        [rd, rd],
        [dim[0]-rd, rd],
        [dim[0]-rd, dim[1]-rd],
        [rd, dim[1]-rd]
    ],
    off = center ?
          [-d[0] / 2, -d[1] / 2] :
          [0, 0]
)
tr([
    for(i = [0:3])
        for(j=[0:$fn/4])
            [
                off[0] + pos[i][0] + cos(ad*j + i*90+180)*r,
                off[1] + pos[i][1] + sin(ad*j + i*90+180)*r
            ]
],diff, diff);

function star(r_out, r_in, sides, shape = 1, angle_off = 0) =
    let(a = 360 / (sides*2))
    [for(i = [0:(sides*2-1)])
        let(rx = i%2 ? r_out : r_in, ry = i%2 ? r_out - r_in + (r_in * shape) : r_in * shape)
        [cos(a*i+angle_off) * rx, sin(a*i+angle_off) * ry]];

function ngon(r, sides) = star(r, r, sides / 2);

```
T_imperial.scad:
```
width        = 1.125;
length       = 8.05;
thickness    = 0.125;
anchor_width = 2.5;
anchor_depth = 0.25;
anchor_length= 0.75;
roundness    = 0.25;
pen_width    = 0.03;
steps        = 16;
angle_size   = 0.75;

text_area      = 0.5;
text_height    = 0.375;
text_depth     = 0.02;
line_thickness = 0.05;
marker_size    = 0.1;
details        = 32;
half_marker    = "½";
extra          = 0;

segments_per_line  = 8;

$fn = details;

/* [hidden] */
//end of the T area x axis
tend = -width/2 - text_area;

mm_per_line = 1 / (steps / segments_per_line);

//end of the angled area x axis
aend = width/2;

scale(24.5) {
//rotate(-45)
difference() {
   union() {
      //main body
      translate([
         tend,
         -anchor_depth
      ])
      rcube([
         width+text_area,
         length+anchor_depth+extra,
         anchor_length+thickness
      ], tight=true, r=roundness);
      echo(anchor_width-angle_size-width-text_area-pen_width*2-line_thickness);
      //base
      translate([
         -(anchor_width-angle_size-width-text_area-pen_width*2-line_thickness)/2-pen_width*2-line_thickness+tend,
         -anchor_depth
      ])
      rcube([
         anchor_width,
         anchor_depth*2,
         anchor_length+thickness
      ], tight=true, r=roundness);
   }

   //main thinning
   translate([
      -roundness+tend-anchor_width,
      0,
      thickness])
   cube([
      (width+anchor_width*2)+roundness*2+text_area,
      length+extra+roundness,
      anchor_length+0.1
   ]);

   //base clear T side
   translate([
      -width-anchor_width+tend,
      0, -0.05
   ])
   cube([
      width+anchor_width,
      anchor_depth+roundness+pen_width,
      thickness+0.1
   ]);

   //base clear angle side
   translate([aend, 0, -0.05])
   cube([
      width+anchor_width,
      anchor_depth+roundness+pen_width,
      thickness+0.1
   ]);

   //T pen clearance
   translate([
      tend-pen_width*2,
      -pen_width,
      -0.05
   ])
   cube([
      pen_width*2,
      anchor_depth+roundness+pen_width,
      thickness+0.1
   ]);

   //Zero hole pen clearance
   translate([
      tend-pen_width*2,
      -pen_width,
      thickness
   ])
   wedge([
      width+pen_width*2+text_area,
      pen_width+0.1,
      pen_width
   ], 0, 3);

   //width of hole area?
   holeareaw = width - pen_width*1.667*2 - line_thickness*2;

   //*** CREATE HOLES
   for(s = [0:length*steps]) {
      //distance from the start
      dist = s / steps;

      linecompletion = (dist%mm_per_line) / mm_per_line;

      //hole
      translate([
         linecompletion * (width + holeareaw/(steps-1) - pen_width*1.667*2-line_thickness*2)-holeareaw/2,
         dist, -0.1
      ])
      cylinder(r1 = pen_width*1.667, r2 = pen_width, h = thickness + 0.2);

      //text and major ruler marks
      if(s%steps == 0) {
         //text
         translate([
            tend + line_thickness,
            dist + line_thickness*3/2,
            -0.01
         ])
         linear_extrude(height=text_depth)
         mirror([1,0])
         text(
            str(dist),
            text_height,
            "sans:bold",
            halign="right"
         );

         //angled side markers: triangle
         translate([
            width/2 - line_thickness,
            dist,-0.01
         ])
         linear_extrude(height=text_depth)
         polygon(ngon(marker_size, 3));

         //angled side markers: line
         translate([width/2-line_thickness-marker_size, dist-line_thickness/2,-0.01])
         cube([line_thickness, line_thickness, text_depth]);

         //half markers
         if(half_marker != "") {
            translate([
               aend-line_thickness,
               dist+5,
               -0.01
            ])
            linear_extrude(height=text_depth)
            polygon(ngon(marker_size/1.2, 3));
         }

         //T side markers
         translate([tend + line_thickness, dist - line_thickness/2, -0.01]) {
            //line
            cube([text_area, line_thickness, text_depth]);

            //triangle
            translate([
               -marker_size/5,
               line_thickness/2
            ])
            rotate(180)
            linear_extrude(height=text_depth)
            polygon(ngon(marker_size, 3));

            //half markers
            if(half_marker != "") {
               translate([
                  -marker_size/5,
                  line_thickness/2 + 5 //add 5 to offset half
               ])
               rotate(180)
               linear_extrude(height=text_depth)
               polygon(ngon(marker_size/1.2, 3));
            }
         }
      }
   }

   //Half hole marker
   //translate([text_area, 0])
   if(
      steps%2 == 0 && //only if even number of steps
      half_marker != "" && //marker text is set
      mm_per_line == 10 //single line per segment
   ) {
      //line
      translate([
         0.5 * (width + holeareaw/(steps-1) - pen_width*1.667*2-line_thickness*3)-holeareaw/2,
         5-pen_width*4, -0.1
      ])
      cube([line_thickness, length+extra-(5-pen_width*4), text_depth]);

      //text
      translate([
         5/10*(width+holeareaw/(steps-1)-pen_width*1.667*2-line_thickness*2)-holeareaw/2+line_thickness,
         5-pen_width*4-line_thickness-text_height,
         -0.01
      ])
      linear_extrude(height=text_depth)
      mirror([1,0])
      text(half_marker, text_height, "sans:bold", halign="c");
   }
}

//angle ruler
difference() {
   linear_extrude(height = thickness)
   polygon([
      [aend, 0],
      [aend+angle_size-pen_width, 0],
      [aend, angle_size-pen_width],
   ]);

   translate([width/2+2.5, 2.2, -0.01])
   cylinder(r=1.8, h=thickness+0.02);
}
}

function rextend_offset(x) = -x / sqrt(2);

function rextend_size(x) = 2 * x / sqrt(2);

function rstraight_off(r) = (r - r / sqrt(2));

function rextend_r(x) = x;

function tr(d, x, y) = [for(i=d) [i[0] + x, i[1] + y]];

function reverse(d) = [for(i=[len(d)-1:-1:0]) d[i]];

module rcube(d, r = 1, sides = 64, tight = false, center = false, extend = 0) {
    p = tight ? extend : extend / sqrt(2);

    translate(center ? [0,0] : [-p,-p])
    linear_extrude(height=d[2])
    rrect([d[0] + p * 2, d[1] + p * 2, d[2]], r + extend, sides, tight, center);
}

module rrect(d, r = 1, sides, tight = false, center = false) {
    polygon(rrect_coords(d, r, $fn = sides, tight = tight, center = center));
}

module wedge(d, reverse = false, rot = 0) {
    rotdims  = [[0,1,2], [1, 0, 2], [0, 1, 2], [1, 0, 2]];
    rotmoves = [[0,0], [d[0], 0], [d[0], d[1]], [0, d[1]]];

    x = d[rotdims[rot][0]];
    y = d[rotdims[rot][1]];
    z = d[rotdims[rot][2]];

    translate([rotmoves[rot][0], rotmoves[rot][1], reverse ? z : 0])
    mirror([0,0,reverse ? 1 : 0])
    rotate(rot * 90)
    translate([0,y, z])
    rotate([0,90,-90])
    linear_extrude(height = y)
    polygon([
            [0, 0],
            [z, 0],
            [z, x]
        ], 2
    );
}

function rrect_coords(d, r=1, $fn = 64, tight = false, center = false) =
let(
    diff = tight ? r - r / sqrt(2) : 0,
    dim  = [d[0]-diff*2, d[1]-diff*2, d[2]],
    rd   = r / sqrt(2),
    ad   = 90 / $fn * 4,
    pos  = [
        [rd, rd],
        [dim[0]-rd, rd],
        [dim[0]-rd, dim[1]-rd],
        [rd, dim[1]-rd]
    ],
    off = center ?
          [-d[0] / 2, -d[1] / 2] :
          [0, 0]
)
tr([
    for(i = [0:3])
        for(j=[0:$fn/4])
            [
                off[0] + pos[i][0] + cos(ad*j + i*90+180)*r,
                off[1] + pos[i][1] + sin(ad*j + i*90+180)*r
            ]
],diff, diff);

function star(r_out, r_in, sides, shape = 1, angle_off = 0) =
    let(a = 360 / (sides*2))
    [for(i = [0:(sides*2-1)])
        let(rx = i%2 ? r_out : r_in, ry = i%2 ? r_out - r_in + (r_in * shape) : r_in * shape)
        [cos(a*i+angle_off) * rx, sin(a*i+angle_off) * ry]];

function ngon(r, sides) = star(r, r, sides / 2);

```


[User]
I'd like to create a holder for some filament swatch cards I have. The cards are 75mm wide, 40mm tall, and 3mm thick. I need a design that lets me customize the number of rows and columns of slots in the holder.

Ideally, I'd like to be able to specify the number of rows, from 1 to 40, and the number of columns, either 1 or 2. It would also be great if I could round the corners with a specified radius, from 0 to 5mm. I think 3mm looks nice, but I want to have the option of changing that value.

I'd prefer if this was created as an OpenSCAD file so I can easily customize it. I don't need any fancy features, just a simple, functional design that I can print.  It would also be helpful to have comments in the code to explain what each section is doing.

[Assistant]
Customized_Holder.scad:
```
/*
   Holder for Color Swatch Cards - Customizer
   G. Tielke, December 2021

   Based on this design in Thingiverse:
     Filament Swatch Card Slot Holder
	 by fractalsauce March 05, 2021

   -Holds 3mm x 75mm x 40mm swatch cards.
   -Single or double columns.
   -One to Forty rows - holds up to 80 cards.

   -Corner rounding: radius of up to 5mm.
    Specify 0 for no rounding.
	My preference is to use 3mm.

*/

/* [Dimensions] */
Holder_Rows = 40; // [1:1:40]
Holder_Columns = 2; // [1:1:2]

/* [Options] */
Corner_Rounding_Radius = 3; // [0.0:0.5:5.0]

/* [Hidden] */

segments = 32;

// Compute dimensions:
HDeep = 1.6 + Holder_Rows * (3.4 + 1.6);
HWide = 1.6 + Holder_Columns * (75.4 + 1.6);
HTall = 20 + 1.2;
HRadius = (Corner_Rounding_Radius == 0) ? .01 : Corner_Rounding_Radius;

difference() {
	// Create the body of the holder:
	RoundedRectangle(Width=HWide, Length=HDeep, Height=HTall, Radius=HRadius);

	// Subtract the slots:
	for (c=[1 : Holder_Columns]) {
		for (r=[1 : Holder_Rows]) {
			translate([1.6+(c-1)*(75.4+1.6),1.6+(r-1)*(3.4+1.6),1.2])
				cube([75.4,3.4,20.01]);
		}
	}
}

module RoundedRectangle(Width, Length, Height, Radius) {
	translate([Radius,Radius,0]) hull() {
		cylinder(r=Radius, h=Height, center=false,
			$fn = segments);
		translate([0,Length-2*Radius,0])
			cylinder(r=Radius, h=Height, center=false,
			$fn = segments);
		translate([Width-2*Radius,Length-2*Radius,0])
			cylinder(r=Radius, h=Height, center=false,
			$fn = segments);
		translate([Width-2*Radius,0,0])
			cylinder(r=Radius, h=Height, center=false,
			$fn = segments);
	}
};

```


[User]
I'm looking to design a customizable drawer divider insert using OpenSCAD. I need to be able to specify the overall width, length, and height of the insert. Then, I want to be able to define how many columns and rows of compartments I want within the insert. The dividers themselves should have a configurable width, and the base of the insert should also have a configurable depth - that is, a small lip around the bottom. This will make it a container and not just grid of cells.

Could you please create an OpenSCAD file that achieves this? I'm not really familiar with OpenSCAD libraries, so please stick to the core functionality if possible - I'd prefer to do without library functions unless they're necessary.

[Assistant]
DrawerInsertDesigner.scad:
```

width = 120;
length = 95;
height = 16;
columns = 4;
rows = 3;
divider_width = 1.2;
bottom_depth = 0.8;

difference() {
    cube([width,length,height], false);
    box_width = (width-((columns+1)*divider_width))/columns;
    box_length = (length-((rows+1)*divider_width))/rows;
    for(x = [0:columns-1], y = [0:rows-1]) {
        translate([(box_width*x+divider_width*(x+1)),(box_length*y+divider_width*(y+1)),bottom_depth]) {
            cube([box_width,box_length,height], false);
        }
    }
}
```


[User]
I'm looking to create a parametric DIN rail snap-in holder for various sized PCBs or other objects, similar to what I've seen online but with some added flexibility. The holder needs to securely attach to a standard 35mm DIN rail without screws.

Here's what I'm envisioning:

1.  **Core Functionality:** The holder should have a main rectangular body that the object will rest against, and a snap-in mechanism on either side that grips the object. The whole assembly will have a base that is suitable for insertion onto the din rail.
2.  **Parametric Dimensions:** The design needs to be fully parametric, so I can easily adjust dimensions via variables to fit different object sizes. The important parameters would be:
    *   `object_width`: The width of the object being held.
    *   `object_depth`: The depth of the object being held.
    *   `object_height`: The thickness or height of the object being held.
    *   `holder_thickness`: The thickness of the base plate of the holder.
    *   `snap_width`: The width of the snap feature itself.
    *   `snap_thickness`: The overall width of the snap including any angled parts.
    *   `snap_h1`, `snap_h2`, `snap_h3`: These relate to the vertical shape of the snap feature and allow me to adjust the shape of the snap.
    *   `dinrail_insert_depth` and `dinrail_insert_width`: The dimensions for inserting into the DIN rail to fit a 35mm DIN rail.
3.  **Snap Mechanism:** The snap-in mechanism should consist of two snap features, one on each side, to securely grip the object. These snaps should be slightly angled to provide the snap functionality.
4.  **DIN Rail Attachment:** The base of the holder should have a feature that clips into a 35mm DIN rail. I'd like to be able to specify the size of this feature so that I could make it fit different rail shapes, with parameters such as `dinrail_insert_depth`, and `dinrail_insert_width`.
5. **Imported Shape:** The DIN rail insert shape is not trivial, and I would like to use the shape from the `din.stl` file.
6. **OpenSCAD:** The entire design should be coded in OpenSCAD, so I can easily customize it and generate STL files.
7. **Libraries:** Please do not use any external libraries such as MCAD, BOSL, BOSL2, dotSCAD, NopSCADlib, or BOLTS for this task.

I think that should cover everything! Let me know if you need clarification on anything.

[Assistant]
dinrail_snap_in_holder.scad:
```
/*
DIN Rail Snap In Holder

Fasten objects like PCBs to a DIN Rail without screws.

Author: Joerg Pressel
Created: 12/26/2021
License: Creative Commons - Attribution - Non-Commercial - Share Alike
Credits go to @matsekberg for his DIN-rail mount https://www.thingiverse.com/thing:2919657/files
*/

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

// size of object to be snapped in
object_width = 23;
object_depth = 75.2;
object_height = 2;

/* [Hidden] */
snap_w = 0.6;
snap_t =1.2;
snap_h3 = 1.5;
snap_h2 = 0;
snapholder_thickness = 1.8;

//create snap with clearance h and length l
module snap(h,l){
    points = [[0,0],[0,h],[-snap_w,h+snap_h2],[0,h+snap_h2+snap_h3],[snap_t,h+snap_h2+snap_h3],[snap_t,0]];
    linear_extrude(l){
        polygon(points);
    }
}

//parameters: object to be snapped in [width, depth, height], optional: center
module snap_in_holder(params,center=false){
    w = params[0];
    h = params[1];
    t = params[2];
    cube([w,h,snapholder_thickness]);
    translate([0,h,0]) rotate([90,0,90]) snap(t+snapholder_thickness,w);
    translate([w,0,0]) rotate([90,0,-90]) snap(t+snapholder_thickness,w);
    translate([0,h/2,-6]) rotate([0,90,0]) resize([0,0,w]) import("din.stl");
}

snap_in_holder([object_width, object_depth, object_height]);

```


[User]
I need a parametric OpenSCAD design for an adapter that will allow me to use flat head screws like they were round head screws. I often have issues with flat head screws damaging the mounting surface, so I'd like an adapter that fits over the flat head and provides a flat bottom for mounting.

The adapter needs to have these configurable parameters:

*   `screw_head_diameter`: the diameter of the flat screw head.
*   `screw_head_height`: the height of the screw head.
*   `screw_thread_diameter`: the diameter of the screw body (with threads).
*   `adapter_diameter`: the outer diameter of the adapter itself.
*   I'd also like to have a couple of small "z-fighting" parameters, maybe called `z_fighter1` and `z_fighter2`. These would be very small adjustments to prevent coplanar faces causing display issues, and they shouldn't change the overall dimensions very much.

The adapter itself should have a cylindrical outer shape, and it should have a cylindrical recess to accommodate the screw head. The bottom of the recess should have a diameter matching the screw's thread diameter, and the top of the recess should match the diameter of the screw head. The adapter should be designed in a way that the bottom is flat, like a round head screw, rather than the flat bottom that would result from using a flat head screw alone.

Could you please generate the necessary OpenSCAD file(s) for this?

[Assistant]
flat_screw_adapter.scad:
```
/* [flat screw dimensions] */
// diameter of flat screw head
screw_head_diameter = 6.9;
// height of screw head
screw_head_height = 3.3;
// diameter of screw body (with threads)
screw_thread_diameter = 3;
// diameter of
adapter_diameter = 8;
// parameter to prevent z-fighting 1
z_fighter1 = 0.005;
// parameter to prevent z-fighting 2
z_fighter2 = -.001;

module screwhead_adapter(screw_head_diameter, screw_head_height, screw_thread_diameter, adapter_diameter, z_fighter1, z_fighter2)
{
    difference(){
    cylinder(screw_head_height, (adapter_diameter/2), (adapter_diameter/2), fn=100);
        translate([0,0,z_fighter2]){
            cylinder(screw_head_height+z_fighter1, (screw_thread_diameter/2), (screw_head_diameter/2),  $fn=100);
        }
    }
}

// main function call
screwhead_adapter(screw_head_diameter, screw_head_height, screw_thread_diameter, adapter_diameter, z_fighter1, z_fighter2);
```


[User]
Hey there, I'm looking to create a parametric OpenSCAD model of an armchair carbon nanotube pen holder, and I'd like your help! I've got some specific design features and parameters in mind.

First off, the main structure should be an armchair carbon nanotube. This tube should be created by repeating a half-layer structure. The half-layer is built up of "dumbbell" structures and diagonal bonds. The dumbbells should be made from two spheres and a cylinder in the middle. The diagonal bonds are also cylinders, and they connect the vertices in adjacent layers.

I'd like to control several parameters for the carbon nanotube: the diameter of the carbon atoms, the diameter of the carbon bonds, the length of the carbon bonds, the number of sides (which will be used to construct the tube as an n-gon), and the number of half-layers that are stacked vertically. I also want to adjust the smoothness of the carbon spheres and bonds using `$fn`.

Also, I want to make the base and top ring of the pen holder optional. If the base is enabled, it should consist of a beveled section at the bottom that transitions to a cylindrical base. If the ring is enabled it should be located at the top of the tube with a matching beveled section on the top of the tube, and if the base is not enabled a similar beveled section on the bottom as well. These should be controllable via a boolean, as well as their heights. The bevel angle for the base and ring should be configurable. Furthermore, the smoothness of the base and ring should be controllable as well via `$fn`.

Here's a summary of the parameters I need:

**Carbon Nanotube:**

*   `Carbon_diameter`: Diameter of the carbon atoms (mm)
*   `Bond_diameter`: Diameter of the carbon bonds (mm)
*   `Bond_length`: Length of the carbon bonds (mm)
*   `Num_sides`: Halved number of n-gon faces on the tube (e.g., 10 would make it a 20-gon)
*   `Num_half_layers`: Number of half layers to stack vertically
*   `Carbon_smoothness`: `$fn` used to draw carbon spheres
*   `Bond_smoothness`: `$fn` used to draw bond cylinders

**Pen Holder Base:**

*   `Draw_pen_holder_base`: Toggle the pen holder base on/off (boolean)
*   `Base_height`: Height of the pen holder base (mm)
*   `Base_smoothness`: `$fn` used to draw the pen holder base

**Pen Holder End Ring:**

*   `Draw_pen_holder_ring`: Toggle the pen holder top ring on/off (boolean)
*   `Top_ring_height`: Height of the top ring (mm)
*  `Top_ring_smoothness`: `$fn` used to draw the pen holder ring

**Base and Top Bevel:**

*   `Bevel_angle`: Angle of the top and bottom bevel (relative to Z)
*   `Bevel_height`: Height of top and bottom bevel (mm)

I think that should be everything. I would like to be able to use the `echo()` command to output the calculated diameter and height of the tube, as well as the base radius and total height. The top ring thickness should also be output. Additionally, the pen holder base should output its calculated radius and height. Lastly, the end ring should output its total height as well.

I'm not sure if you'll need them, but I'm not using any external libraries in my existing code.

[Assistant]
armchair_cnt.scad:
```
// Armchair Carbon Nanotube Pen Holder

/* [Armchair Carbon Nanotube] */
// Diameter of the carbon atoms (mm)
Carbon_diameter = 3.0;
// Diameter of the carbon bonds (mm)
Bond_diameter = 3.0;
// Length of the carbon bonds (mm)
Bond_length = 8.0;
// Halved number of n-gon faces on the tube
Num_sides = 10;
// Number of half layers to vertically stack
Num_half_layers = 12;
// $fn used to draw carbon spheres
Carbon_smoothness = 16;
// $fn used to draw bond cylinders
Bond_smoothness = 8;

/* [Pen Holder Base] */
// Toggle the pen holder base on/off
Draw_pen_holder_base = 1; // [0:false, 1:true]
// Height of the pen holder base (mm)
Base_height = 3.0;
// $fn used to draw the pen holder base
Base_smoothness = 64;

/* [Pen Holder End Ring] */
// Toggle the pen holder top ring on/off
Draw_pen_holder_ring = 1; // [0:false, 1:true]
// Height of the top ring (mm)
Top_ring_height = 3.0;
// $fn used to draw the pen holder base
Top_ring_smoothness = 64;

/* [Base and Top Bevel] */
// Angle of the top and bottom bevel (relative to Z)
Bevel_angle = 30;
// Height of top and bottom bevel (mm)
Bevel_height = 3.0;

/* [Hidden] */
// --- Intermediate Values ---
// pre-calculate values to allow for caching
g_num_faces = Num_sides * 2;
g_ngon_slice_angle = 360 / g_num_faces;
g_ngon_vertex_angle = (g_num_faces - 2) * 180 / g_num_faces;
g_face_length = Bond_length * ((1 / (2 * sin(g_ngon_vertex_angle/2))) + 1);
g_segment_radius = g_face_length / (2 * tan(g_ngon_slice_angle/2));
g_ngon_vertex_radius = g_face_length / (2 * sin(g_ngon_slice_angle/2));
g_ngon_vertex_radius_reduction = Bond_length / (4 * tan(g_ngon_vertex_angle/2));
g_hexagon_height = sqrt(3) * Bond_length;
g_half_layer_height = g_hexagon_height / 2;
g_cnt_height = g_half_layer_height * Num_half_layers;
g_base_outer_radius = g_ngon_vertex_radius + (Bevel_height * tan(Bevel_angle));
Z_EPSILON = 0.01; // small constant value for z-fighting

echo("Tube has approx. diameter ", g_ngon_vertex_radius * 2);
echo("Tube has approx. height ", g_cnt_height);

// --- Geometry ---
// render() is used often to cache objects for future calls
// union early to "swallow" internal vertices
// without caching, compilation never finishes
module Dumbbell()
{
    render() {
        union() {
            rotate([0,90,0])
                cylinder(h=Bond_length, r=Bond_diameter/2, center=true, $fn=Bond_smoothness);
            translate([Bond_length/2,0,0])
                sphere(r=Carbon_diameter/2, $fn=Carbon_smoothness);
            translate([-Bond_length/2,0,0])
                sphere(r=Carbon_diameter/2, $fn=Carbon_smoothness);
        }
    }
}

module DumbbellLayer()
{
    render() {
        for(i = [0:2:g_num_faces-1])
        {
            rotate([0,0,g_ngon_slice_angle*i])
                translate([0,g_segment_radius,0])
                Dumbbell();
        }
    }
}

module DiagonalBond(up_angle)
{
    translate([0,g_ngon_vertex_radius-g_ngon_vertex_radius_reduction,g_half_layer_height/2])
        rotate([0,up_angle,0])
        cylinder(h=Bond_length, r=Bond_diameter/2, center=true, $fn=Bond_smoothness);
}

module LeftDiagonalBonds()
{
    render() DiagonalBond(-30);
}

module RightDiagonalBonds()
{
    render() DiagonalBond(30);
}

module DiagonalBondLayer()
{
    offset_angle = g_ngon_slice_angle / 2;
    for(i = [0:2:g_num_faces-1])
    {
        rotate([0,0,(g_ngon_slice_angle*i) + offset_angle])
            LeftDiagonalBonds();
    }
    for(i = [1:2:g_num_faces-1])
    {
        rotate([0,0,(g_ngon_slice_angle*i) + offset_angle])
            RightDiagonalBonds();
    }
}

module HalfLayer()
{
    render()
    {
        DumbbellLayer();
        DiagonalBondLayer();
    }
}

module ArmchairCNT()
{
    for(layer = [0:Num_half_layers-1])
    {
        translate([0,0,layer * g_half_layer_height])
            rotate([0,0,layer * g_ngon_slice_angle])
            HalfLayer();
    }
    translate([0,0, Num_half_layers * g_half_layer_height])
        rotate([0,0,(Num_half_layers % 2) * g_ngon_slice_angle])
        DumbbellLayer();
}

module PenHolderBase()
{
    translate([0,0,-Bevel_height])
        cylinder(r1=g_base_outer_radius, r2=g_ngon_vertex_radius, h=Bevel_height, $fn=Base_smoothness);
    translate([0,0,-Bevel_height-Base_height])
        cylinder(r=g_base_outer_radius, h=Base_height, $fn=Base_smoothness);
    echo("Penholder base has radius ", g_base_outer_radius);
    echo("Penholder base has total height ", Bevel_height + Base_height);
}

module PenHolderTopRingPositive()
{
    cylinder(h=Bevel_height, r1=g_ngon_vertex_radius, r2=g_base_outer_radius, $fn=Top_ring_smoothness);
        translate([0, 0, Bevel_height])
    cylinder(h=Top_ring_height, r=g_base_outer_radius, $fn=Top_ring_smoothness);
}

module PenHolderTopRingNegative()
{
    top_ring_half_thickness = g_base_outer_radius - g_ngon_vertex_radius;
    top_ring_upper_inner_radius = g_base_outer_radius - (top_ring_half_thickness * 2);
    echo("Penholder top ring has thickness ", top_ring_half_thickness * 2);
    translate([0, 0, -Z_EPSILON])
        union()
        {
            cylinder(h=Bevel_height, r1=g_ngon_vertex_radius, r2=top_ring_upper_inner_radius, $fn=Top_ring_smoothness);
            translate([0, 0 ,Bevel_height-Z_EPSILON])
                cylinder(h=Top_ring_height+(Z_EPSILON*3), r=top_ring_upper_inner_radius, $fn=Top_ring_smoothness);
        }
}

debug_top_ring_cutaway = false;
module PenHolderEndRing()
{
    difference()
    {
        PenHolderTopRingPositive();
        PenHolderTopRingNegative();
        if (debug_top_ring_cutaway) cube([g_base_outer_radius, g_base_outer_radius, g_base_outer_radius]);
    }
}
module PenHolderTopRing()
{
    translate([0, 0, g_cnt_height])
        PenHolderEndRing();
    echo("Penholder top ring has total height ", Bevel_height + Top_ring_height);
}

module PenHolderBottomRing()
{
    mirror([0, 0, 180])
        PenHolderEndRing();
}

ArmchairCNT();
if (Draw_pen_holder_base) PenHolderBase();
if (Draw_pen_holder_ring) PenHolderTopRing();
if (Draw_pen_holder_ring && !Draw_pen_holder_base) PenHolderBottomRing();
```


[User]
I'm looking to create a paper towel holder, and I've seen some designs that use a kind of rounded, almost spool-like shape. I like the look of the design I found on Thingiverse, specifically [https://www.thingiverse.com/thing:5178187](https://www.thingiverse.com/thing:5178187), which is a remix of another design.

Basically, the holder has a wider base with a raised lip, and a narrower central section that holds the paper towel roll. The main body is formed by two hulls, one creating the base, and the other forming the central paper towel holder. There's a subtraction at the end that creates the internal part for the roll.

I need a parametric design in OpenSCAD so I can adjust the dimensions. I'd like to be able to control:

*   **base_width**: The outer diameter of the base (currently `w1` = 50 in the example file, but I want to control this directly)
*   **roll_diameter**: The inner diameter of the paper towel roll (currently `w2` = 43.5 in the example file, but I want to be able to change this).
*   **base_height**: The overall height of the base section (which seems to be about 10 in the original design).
*   **roll_height**: The height of the central roll holding section (which seems to be about 30, but I want to set it directly)
*   **base_lip_thickness**: the thickness of the raised lip on the base (appears to be around 1 in the example).
*   **roll_lip_thickness**: the thickness of the raised lip of the roll holder (appears to be about 1 in the example)
*   **inner_cut_diameter**: The diameter of the internal cut that creates the cavity for the paper towel roll, which should be slightly smaller than the roll diameter so the roll stays on the holder. I think in the example it’s `w2-8`.
*   **inner_cut_height**: The overall height of this internal cut. It seems like it goes through most of the model.

I don't need anything fancy with threading or anything. I just want a clean model that I can adjust to suit the paper towels I have. I’m not using any external libraries, so please don’t try to include them. I am fine with you choosing `center = true` for all the cylinders.

Could you generate the necessary OpenSCAD code for this?

[Assistant]
Rollentrger.scad:
```
// Paper towel holder - Rollentrger
// by stanoba http://www.thingiverse.com/stanoba/about
// https://www.thingiverse.com/thing:5178187

w1 = 50; //static value
w2 = 43.5; // paper roll inside diameter

difference(){
	union(){
		hull(){
			translate([0,0,-9.5]) cylinder(h = 1, d1 = w1-2, d2 = w1, center = true, $fn=120);
			translate([0,0,-0.5]) cylinder(h = 1, d1 = w1, d2 = w1-2, center = true, $fn=120);
		}

		hull(){
			translate([0,0,29.5]) cylinder(h = 1, d1 = w2, d2 = w2-2, center = true, $fn=120);
			translate([0,0,-0.5]) cylinder(h = 1, d = w2, center = true, $fn=120);
		}
	}

  // translate([0,0,50]) cylinder(h = 100, d = w2-8, center = true, $fn=120);
  //  translate([0,0,-5]) cylinder(h = 11, d = w1-14.5, center = true, $fn=120);
  translate([0,0,-15]) cylinder(h = 100, d = w2-8, center = true, $fn=120);
}
```


[User]
I'm looking for an OpenSCAD design for a customizable storage box, and it needs to be optimized for fast printing, ideally using vase mode. I'd like the design to be parametric, so I can easily adjust the size and features.

Here's what I have in mind:

**Core Box Structure:**

*   **Grid-based sizing:** The box should be based on a grid, where I can define the base grid size (e.g., 25mm) and the number of grid tiles in width, depth, and height.
*   **Stackable option:** There should be an option to make the boxes stackable, which would add small feet to the bottom. I want to be able to disable this for faster printing and less material usage.
*   **Vase mode compatibility:** The design should be optimized for vase mode printing using a single wall layer, but I'd also like to be able to specify the number of wall layers if I'm not using vase mode.
*   **Bottom layers:** The number of bottom layers should be customizable.
*  **Inset layers:** The number of inset layers for the base of the box should be adjustable.
*  **Tolerance:** I want to set a tolerance value for printer inaccuracies.

**Divider Support:**

*   **Optional divider pockets:** I need to be able to add pockets for dividers inside the box if needed.
*   **Divider slots:** Along with the pockets, there should be slots on the sides of the box to insert the dividers.
*   **Divider dimensions:** The dividers themselves should have customizable dimensions, including the number of grid tiles in width and height.
*  **Outer edges:**  I'd like to be able to specify how many outer edges the divider should have (0, 1, or 2).
*   **Connector:** The design should include connectors for the dividers with adjustable length, wall thickness, wall height, and bottom height. The type of connector (X, T, or L) should be selectable.

**Additional Features:**

*   **Label Holder:** I need an optional label holder that can be added to the front. It should have customizable width, depth, and height.
*   **Front Panel:** I'd like to be able to add a front panel to the box that attaches to the front of the box with cutouts for a label and an optional knob. The front panel should be customizable with the number of tiles in width and height, a label cutout (with customizable inner width and height), and a knob.

**Printer Settings:**

*   **Layer height and width:** The design should allow me to specify the layer height and width of my printer.
*   **Wall, bottom, inset, and feet layers:** I need to be able to customize the number of wall layers, bottom layers, inset layers, and feet layers.

I think that covers everything I need. I'd like the design to be organized, commented and make use of user-defined functions where appropriate. I'm also comfortable if you decide to organize the overall design in multiple .scad files as you see fit. If you decide to use any libraries such as BOSL, please be sure to note which ones they are. Let me know if you have any questions.

[Assistant]
box.scad:
```
/* [General] */
// what element to show
showElement="b"; // [b:Box,i:Divider,c:Connectors,l:Label Holder,fr:Front]
$fn=10;
$fs = 0.15;
/* [Box - Simple] */
// size of the grid
gridBase=25;  // [10:100]
// number of tiles in width direction
tileCountWidth=2; // [1:20]
// number of tiles in depth direction
tileCountDepth=3; // [1:20]
// number of tiles in height direction
tileCountHeight=1; // [1:20]
// should add divider pockets?
useDividerPockets="t"; // [t:True,f:False]
// should the box be stackable? "No" reduces print time and material usage quite a bit
stackable="t"; // [t:True,f:False]
/* [Divider - Simple] */
// divider size
tileCountDividerWidth=3; // [1:20]
// divider size
tileCountDividerHeight=3; // [1:20]
// show box in inlay view
showBoxInInlayView="t"; // [t:True,f:False]
// number of outer edges
outerEdgesCount=2; // [0,1,2]
/* [Connectors - Simple] */
//  type of the connector
connectorType="x"; // [x:X,t:T,l:L]
/* [Label Holder] */
labelHolderWidth=25;
labelHolderDepth=5;
labelHolderHeight=5;
/* [Front] */
frontTileCountHeight=1;
frontTileCountWidth=2;
frontLabelInnerWidth=20;
frontLabelInnerHeight=10;
frontKnob="t"; // [t:True,f:False]
// show box in inlay view
showBoxInFrontView="t"; // [t:True,f:False]
/* [Expert] */
// layer height setting of your printer
layerHeight=0.4;
// layer width setting of your printer
layerWidth=1.2;
//tolerance for printer inaccuracies
tolerance=0.15;
// number of wall layers. Choose 1 for vase mode.
wallLayerCount=1; // [1:10]
// number of bottom layers
bottomLayerCount=2; // [1:10]
// number of inset layers
insetLayerCount=2; // [1:10]
// number of layers for feet height
feetLayerCount=4; // [2:10]
// divider connector bottom height
dividerConnectorBottomHeight=0.8;
// thickness of the divider insert plate in layer
dividerThickness=1.2;
// width of the slot for the dividers
slotWidth=8.0;
// depth of the divider insert
dividerDepth=3;
// connector wall thickness
connectorWallThickness=1.2;
// connector wall thickness
connectorLength=4;
// connector wall height
connectorWallHeight=4;
frontDepthLayerCount=2;
frontLabelInnerDepthLayerCount=5;
frontLabelWallLayerCount=1;
frontKnobWidth=20;
frontKnobDepth=7;
frontKnobThicknessLayerCount=1;

insetHeight=insetLayerCount*layerHeight;
bottomHeight=bottomLayerCount*layerHeight;

feetHeight=feetLayerCount*layerHeight;

wallThickness=layerWidth*wallLayerCount;

function tileCountToSize(tilecount) = gridBase*tilecount;

function offset(x, y, z=0, withZ=false, size=[0,0,0]) = [size[0]+x, size[1]+ (y ? y : x), size[2]+(withZ && z==0 ? x : z )];
module box(tileCountWidth=tileCountWidth, tileCountDepth=tileCountDepth, tileCountHeight=tileCountHeight) {

  height=gridBase*tileCountHeight-tolerance;
  outerBoxPositionX=tolerance;
  outerBoxPositionY=tolerance;
  outerBoxPositionZ=feetHeight;
  outerBoxPosition=[outerBoxPositionX,outerBoxPositionY,outerBoxPositionZ];
  outerBoxSizeX=tileCountToSize(tileCountWidth)-2*tolerance;
  outerBoxSizeY=tileCountToSize(tileCountDepth)-2*tolerance;
  outerBoxSizeZ=tileCountToSize(tileCountHeight)-tolerance;
  outerBoxSize=[outerBoxSizeX, outerBoxSizeY, outerBoxSizeZ];

  innerBoxPositionX=wallThickness+tolerance;
  innerBoxPositionY=wallThickness+tolerance;
  innerBoxPositionZ=feetHeight+insetHeight+bottomHeight;
  innerBoxPosition=[innerBoxPositionX,innerBoxPositionY,innerBoxPositionZ];
  innerBoxSizeX=outerBoxSizeX-wallThickness*2;
  innerBoxSizeY=outerBoxSizeY-wallThickness*2;
  innerBoxSizeZ=outerBoxSizeZ;
  innerBoxSize=[innerBoxSizeX,innerBoxSizeY,innerBoxSizeZ];

  difference() {
    union() {
      // main box body
      difference() {
        // main body
        translate(outerBoxPosition) cube(outerBoxSize);
        // make hollow
        translate(innerBoxPosition) cube(innerBoxSize);
        // champfer outside
        translate([tolerance, tolerance, feetHeight])
        rotate([-90,-90,0])
        linear_extrude(height = tileCountToSize(tileCountDepth))
        polygon([[0,0],[wallThickness,0],[0,wallThickness]]);

        translate([tileCountToSize(tileCountWidth)-tolerance, tolerance, feetHeight])
        rotate([-90,180,0])
        linear_extrude(height = tileCountToSize(tileCountDepth))
        polygon([[0,0],[wallThickness,0],[0,wallThickness]]);

        translate([tolerance, tolerance, feetHeight])
        rotate([-90,180,-90])
        linear_extrude(height = tileCountToSize(tileCountWidth))
        polygon([[0,0],[wallThickness,0],[0,wallThickness]]);

        translate([tolerance, tileCountToSize(tileCountDepth)-tolerance, feetHeight])
        rotate([-90,-90,-90])
        linear_extrude(height = tileCountToSize(tileCountWidth))
        polygon([[0,0],[wallThickness,0],[0,wallThickness]]);
      }
      // feet
      if(stackable=="t") {
        for(i=[0:tileCountWidth-1]) {
          x=i*gridBase;
          for(j=[0:tileCountDepth-1]) {
            y=j*gridBase;
            footBoxPosition=offset(tolerance+wallThickness, size=[x,y,0]);
            footBoxSize=offset(-2*tolerance-2*wallThickness, size=[tileCountToSize(1), tileCountToSize(1),feetHeight]);
            translate(footBoxPosition) cube(footBoxSize);
          }
        }
      }
      if(useDividerPockets == "t" || showElement == "i") {
        // divider pockets
        dividerBoxWidth=dividerThickness+3*tolerance+4*wallThickness;
        dividerBoxHeight=gridBase*tileCountHeight-2*tolerance-insetHeight-bottomHeight-feetHeight-dividerConnectorBottomHeight;
        dividerBoxZ=feetHeight+insetHeight+bottomHeight;
        // x divider pockets
        if(tileCountWidth>1) {
          for(i=[1:tileCountWidth-1]) {
            x=i*gridBase-dividerBoxWidth/2;
            y1=tolerance+wallThickness;
            y2=gridBase*tileCountDepth-tolerance-wallThickness-dividerDepth;
            dividerXBox1Position=[x,y1,dividerBoxZ];
            dividerXBox2Position=[x,y2,dividerBoxZ];
            dividerXBoxSize=[dividerBoxWidth,dividerDepth,dividerBoxHeight];
            translate(dividerXBox1Position) cube(dividerXBoxSize);
            translate(dividerXBox2Position) cube(dividerXBoxSize);
          }
        }
        // y divider pockets
        if(tileCountDepth>1)  {
          for(j=[1:tileCountDepth-1]) {
            y=j*gridBase-dividerBoxWidth/2;
            x1=tolerance+wallThickness;
            x2=gridBase*tileCountWidth-tolerance-wallThickness-dividerDepth;
            dividerYBox1Position=[x1,y,dividerBoxZ];
            dividerYBox2Position=[x2,y,dividerBoxZ];
            dividerYBoxSize=[dividerDepth,dividerBoxWidth,dividerBoxHeight];
            translate(dividerYBox1Position) cube(dividerYBoxSize);
            translate(dividerYBox2Position) cube(dividerYBoxSize);
          }
        }
      }
    }
    if(useDividerPockets == "t" || showElement == "i") {
      // back slits
      dividerBoxWidth=dividerThickness+3*tolerance+4*wallThickness;
      dividerBackSlitWidth=tolerance;
      dividerBackSlitDepth=dividerDepth;
      dividerBackSlitHeight=gridBase*tileCountHeight-2*tolerance-insetHeight-bottomHeight-feetHeight-dividerConnectorBottomHeight;
      dividerBackSlitZ=feetHeight+bottomHeight+insetHeight;
      if(tileCountWidth > 1) {
        for(i=[1:tileCountWidth-1]) {
          // x back slits
          x1=i*gridBase-dividerBoxWidth/2+wallThickness;
          x2=i*gridBase+dividerBoxWidth/2-tolerance-wallThickness;
          y1=tolerance;
          y2=gridBase*tileCountDepth-dividerDepth-tolerance;
          dividerBackSlitX11Position=[x1,y1,dividerBackSlitZ];
          dividerBackSlitX12Position=[x2,y1,dividerBackSlitZ];
          dividerBackSlitX21Position=[x1,y2,dividerBackSlitZ];
          dividerBackSlitX22Position=[x2,y2,dividerBackSlitZ];
          dividerBackSlitXSize=[dividerBackSlitWidth,dividerBackSlitDepth,dividerBackSlitHeight];
          translate(dividerBackSlitX11Position) cube(dividerBackSlitXSize);
          translate(dividerBackSlitX12Position) cube(dividerBackSlitXSize);
          translate(dividerBackSlitX21Position) cube(dividerBackSlitXSize);
          translate(dividerBackSlitX22Position) cube(dividerBackSlitXSize);
          // x divider slits
          dividerSlitPositionX=i*gridBase-dividerThickness/2-tolerance/2;
          dividerSlitPositionY=tolerance+wallThickness;
          dividerSlitPositionZ=feetHeight+bottomHeight;
          dividerSlitPosition=[dividerSlitPositionX,dividerSlitPositionY,dividerSlitPositionZ];
          dividerSlitSizeX=dividerThickness+tolerance;
          dividerSlitSizeY=gridBase*tileCountDepth-2*wallThickness-2*tolerance;
          dividerSlitSizeZ=height;
          dividerSlitSize=[dividerSlitSizeX,dividerSlitSizeY,dividerSlitSizeZ];
          translate(dividerSlitPosition) cube(dividerSlitSize);
        }
      }
      if(tileCountDepth > 1) {
        for(j=[1:tileCountDepth-1]) {
          // y back slits
          y1=j*gridBase-dividerBoxWidth/2+wallThickness;
          y2=j*gridBase+dividerBoxWidth/2-tolerance-wallThickness;
          x1=tolerance;
          x2=gridBase*tileCountWidth-dividerDepth-tolerance;
          dividerBackSlitY11Position=[x1,y1,dividerBackSlitZ];
          dividerBackSlitY12Position=[x2,y1,dividerBackSlitZ];
          dividerBackSlitY21Position=[x1,y2,dividerBackSlitZ];
          dividerBackSlitY22Position=[x2,y2,dividerBackSlitZ];
          dividerBackSlitYSize=[dividerBackSlitDepth,dividerBackSlitWidth,dividerBackSlitHeight];
          translate(dividerBackSlitY11Position) cube(dividerBackSlitYSize);
          translate(dividerBackSlitY12Position) cube(dividerBackSlitYSize);
          translate(dividerBackSlitY21Position) cube(dividerBackSlitYSize);
          translate(dividerBackSlitY22Position) cube(dividerBackSlitYSize);
          // y divider slits
          dividerSlitPositionX=tolerance+wallThickness;
          dividerSlitPositionY=j*gridBase-dividerThickness/2-tolerance/2;
          dividerSlitPositionZ=feetHeight+bottomHeight;
          dividerSlitPosition=[dividerSlitPositionX,dividerSlitPositionY,dividerSlitPositionZ];
          dividerSlitSizeX=gridBase*tileCountWidth-2*wallThickness-2*tolerance;
          dividerSlitSizeY=dividerThickness+tolerance;
          dividerSlitSizeZ=height;
          dividerSlitSize=[dividerSlitSizeX,dividerSlitSizeY,dividerSlitSizeZ];
          translate(dividerSlitPosition) cube(dividerSlitSize);
        }
      }
      // holes
      for(i=[0:tileCountWidth-1]) {
        x=i*gridBase;
        for(j=[0:tileCountDepth-1]) {
          y=j*gridBase;
          if(j!=0) {
            holePositionX=x+gridBase/2-slotWidth/2;
            holePositionY=y-dividerThickness/2-tolerance/2;
            holePositionZ=feetHeight;
            holePosition=[holePositionX,holePositionY,holePositionZ];
            translate(holePosition) cube([slotWidth,dividerThickness+tolerance,bottomHeight]);
          }
          if(i!=0) {
            holePositionX=x-dividerThickness/2-tolerance/2;
            holePositionY=y+gridBase/2-slotWidth/2;
            holePositionZ=feetHeight;
            holePosition=[holePositionX,holePositionY,holePositionZ];
            translate(holePosition) cube([dividerThickness+tolerance,slotWidth,bottomHeight]);
          }
        }
      }
    }
  }
}

module divider(dividerSize) {
  union() {
    cube(dividerSize);
    for(i=[0:tileCountDividerWidth-1]) {
      translate([-(outerEdgesCount > 0 ? tolerance+wallThickness : dividerThickness/2+tolerance/2)+(i)*gridBase+gridBase/2-slotWidth/2-tolerance/2,0,-bottomHeight+tolerance]) cube([slotWidth-tolerance,dividerThickness,bottomHeight-tolerance]);
    }
  }
}

if(showElement=="b") {
  box();
} else if(showElement=="i") {
  dividerSizeX=gridBase*tileCountDividerWidth - dividerThickness - 2*tolerance - outerEdgesCount * (-dividerThickness/2+tolerance+wallThickness);
  dividerSizeY=dividerThickness;
  dividerSizeZ=gridBase*tileCountDividerHeight-2*tolerance-insetHeight-bottomHeight-feetHeight-dividerConnectorBottomHeight;
  dividerSize=[dividerSizeX,dividerSizeY,dividerSizeZ];

  dividerPositionX=(outerEdgesCount > 0 ? 2*tolerance+wallThickness : gridBase+dividerThickness/2+3/2*tolerance);
  dividerPositionY=gridBase-dividerThickness/2;
  dividerPositionZ=feetHeight+bottomHeight;
  dividerPosition=[dividerPositionX,dividerPositionY,dividerPositionZ];

  translate(dividerPosition) divider(dividerSize);

  boxWidth=tileCountDividerWidth+2-outerEdgesCount;
  if(showBoxInInlayView == "t") {
    box(boxWidth,2,tileCountDividerHeight);
  }
} else if(showElement=="c") {
  if(connectorType=="x") {
    difference() {
      connectorXWidth=2*connectorWallThickness+tolerance+dividerThickness;
      connectorXLength=connectorLength*2+tolerance+dividerThickness;
      connectorXHeight=dividerConnectorBottomHeight+connectorWallHeight;
      union() {
        translate([connectorXLength/2-connectorXWidth/2-tolerance/2,-connectorXLength/2+connectorXWidth/2,0]) cube([connectorXWidth,connectorXLength,connectorXHeight]);
        cube([connectorXLength,connectorXWidth,connectorXHeight]);
      }
      translate([0,connectorWallThickness,0]) cube([connectorXLength,dividerThickness+tolerance,connectorWallHeight]);
      translate([connectorWallThickness+connectorXLength/2-connectorXWidth/2-tolerance/2,-connectorXLength/2+connectorXWidth/2,0]) cube([dividerThickness+tolerance,connectorXLength,connectorWallHeight]);
    }
  } else if(connectorType=="t") {
    difference() {
      connectorTWidth=2*connectorWallThickness+tolerance+dividerThickness;
      connectorTLength=connectorLength*2+tolerance+dividerThickness;
      connectorTHeight=dividerConnectorBottomHeight+connectorWallHeight;
      union() {
        translate([connectorTLength/2-connectorTWidth/2,0,0]) cube([connectorTWidth,connectorTLength,connectorTHeight]);
        cube([connectorTLength,connectorTWidth,connectorTHeight]);
      }
      translate([0,connectorWallThickness,0]) cube([connectorTLength,dividerThickness+tolerance,connectorWallHeight]);
      translate([connectorWallThickness+connectorTLength/2-connectorTWidth/2-tolerance/2,connectorWallThickness,0]) cube([dividerThickness+tolerance,connectorTLength,connectorWallHeight]);
    }
  } else if(connectorType=="l") {
    difference() {
      connectorLWidth=2*connectorWallThickness+tolerance+dividerThickness;
      connectorLLength=connectorLength*2+tolerance+dividerThickness;
      connectorLHeight=dividerConnectorBottomHeight+connectorWallHeight;
      union() {
        translate([connectorLLength-connectorLWidth,0,0]) cube([connectorLWidth,connectorLLength,connectorLHeight]);
        cube([connectorLLength,connectorLWidth,connectorLHeight]);
      }
      translate([0,connectorWallThickness,0]) cube([connectorLLength-connectorWallThickness,dividerThickness+tolerance,connectorWallHeight]);
      translate([connectorLLength-dividerThickness-tolerance-connectorWallThickness,connectorWallThickness,0]) cube([dividerThickness+tolerance,connectorLLength,connectorWallHeight]);
    }
  }
} else if(showElement=="l") {
  rotate([90,90,0])
  linear_extrude(height = labelHolderWidth)
  polygon([[0,0],[0,labelHolderDepth],[labelHolderHeight,0]]);
} else if(showElement=="fr") {
  if(showBoxInFrontView=="t") {
    box(frontTileCountWidth,tileCountDepth,frontTileCountHeight);
  }
  frontPositionX=tolerance;
  frontPositionY=-frontDepthLayerCount*layerHeight+tolerance;
  frontPositionZ=wallThickness+feetHeight;

  frontSizeX=frontTileCountWidth*gridBase-tolerance*2;
  frontSizeY=frontDepthLayerCount*layerHeight;
  frontSizeZ=frontTileCountHeight*gridBase-wallThickness-tolerance;
  union() {
    difference() {
      union() {
        translate([frontPositionX,frontPositionY,wallThickness+feetHeight])
        cube([frontSizeX,frontSizeY,frontSizeZ]);

        translate([frontPositionX+frontSizeX/2-frontLabelInnerWidth/2-frontLabelWallLayerCount-tolerance/2,frontPositionY-frontLabelInnerDepthLayerCount*layerHeight,frontPositionZ+frontSizeZ/2-frontLabelInnerHeight/2-frontLabelWallLayerCount-tolerance/2])
        cube([frontLabelInnerWidth+frontLabelWallLayerCount*2+tolerance,frontLabelInnerDepthLayerCount*layerHeight,frontLabelInnerHeight+frontLabelWallLayerCount+tolerance]);
      }
      translate([frontPositionX+frontSizeX/2-frontLabelInnerWidth/2-tolerance/2,frontPositionY-frontLabelInnerDepthLayerCount*layerHeight,frontPositionZ+frontSizeZ/2-frontLabelInnerHeight/2-tolerance/2])
      cube([frontLabelInnerWidth+tolerance,frontLabelInnerDepthLayerCount*layerHeight,frontLabelInnerHeight+tolerance]);
    }
    translate([frontPositionX+frontSizeX/2-frontLabelInnerWidth/2-tolerance/2,frontPositionY-frontLabelInnerDepthLayerCount*layerHeight,frontPositionZ+frontSizeZ/2-frontLabelInnerHeight/2-tolerance/2])
    linear_extrude(height = frontLabelInnerHeight+tolerance)
    polygon([[0,0],[frontLabelInnerDepthLayerCount*layerHeight/2,0],[0,frontLabelInnerDepthLayerCount*layerHeight]]);

    translate([frontPositionX+frontSizeX/2-frontLabelInnerWidth/2-tolerance/2+frontLabelInnerWidth+tolerance,frontPositionY-frontLabelInnerDepthLayerCount*layerHeight,frontPositionZ+frontSizeZ/2-frontLabelInnerHeight/2-tolerance/2])
    rotate([0,0,90])
    linear_extrude(height = frontLabelInnerHeight+tolerance)
    polygon([[0,0],[frontLabelInnerDepthLayerCount*layerHeight,0],[0,frontLabelInnerDepthLayerCount*layerHeight/2]]);

    translate([frontPositionX+frontSizeX/2-frontLabelInnerWidth/2-tolerance/2+frontLabelInnerWidth+tolerance,-frontDepthLayerCount*layerHeight+tolerance-frontLabelInnerDepthLayerCount*layerHeight,frontPositionZ+frontSizeZ/2-frontLabelInnerHeight/2-tolerance/2])
    rotate([0,-90,0])
    linear_extrude(height = frontLabelInnerWidth+tolerance)
    polygon([[0,0],[frontLabelInnerDepthLayerCount*layerHeight/2,0],[0,frontLabelInnerDepthLayerCount*layerHeight]]);

    if(frontKnob=="t") {
      translate([frontPositionX+frontSizeX/2-frontKnobWidth/2,frontPositionY-frontKnobDepth,frontPositionZ])
      cube([frontKnobWidth,frontKnobDepth,frontKnobThicknessLayerCount*layerWidth]);
    }
  }
}
```


[User]
I need a parametric pipe holder designed in OpenSCAD. I want to be able to customize several aspects of it, including the distance between mounting holes, the wall thickness, and the diameter of the pipe it's meant to hold.

The basic shape should be a rectangular block with a cylinder sticking out of it, but with the center of the cylinder and a matching cutout removed. The mounting holes should be located on either side of the cylinder, in the rectangular block. I'd like the mounting holes to go all the way through, with a little extra depth, to ensure they cut fully through when rendered.

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

*   `fixture_hole_distance`:  The distance between the centers of the two mounting holes.
*   `fixture_hole_diameter`: The diameter of the mounting holes.
*   `pipe_holder_height`: The height of the cylindrical part that will hold the pipe.
*   `pipe_diameter`: The outer diameter of the pipe the holder is designed for.
*   `wall_thickness`:  The thickness of the walls of the holder.

I think it should use the standard OpenSCAD libraries and not include any external ones.

[Assistant]
pipeholder.scad:
```
fixture_hole_distance = 60;
fixture_hole_diameter = 6.2;
pipe_holder_height = 10;
pipe_diameter = 28.4;
wall_thickness = 3;

pipe_holder_cutout_height = pipe_holder_height + 0.1;

difference() {
    union() {
        cube([fixture_hole_distance + 4 * wall_thickness,
              pipe_diameter + 4 * wall_thickness, 3],
              center = true);

        translate([0, 0, wall_thickness / 2])
        cylinder(h = pipe_holder_height, d = pipe_diameter + 2 * wall_thickness);
    }
    translate([0, 0, wall_thickness / 2])
        cylinder(h = pipe_holder_cutout_height, d = pipe_diameter);

    translate([-pipe_diameter, -pipe_diameter/2, wall_thickness / 2])
        cube([pipe_diameter, pipe_diameter, pipe_holder_cutout_height]);

    for(side_x = [-1:2:1])
        translate([side_x * (fixture_hole_distance / 2), 0, 0])
            cylinder(h = wall_thickness + 0.1,
                     d = fixture_hole_diameter,
                     center = true);
}

```


[User]
I'd like a parametric OpenSCAD design for a hinged box, printable in one piece. It should have a few different latch options: a simple tab/slot latch like in the original design, a buckle latch, and a magnetic closure. I'd also like to be able to add custom logos to both the top and bottom of the box using SVG or DXF files.

The box should have parameters for:

*   **Basic Dimensions:**
    *   `width` (outside width of the box)
    *   `depth` (outside depth of the box)
    *   `height` (outside height of the box)
    *   `wallThickness`
*   **Logos:**
    *   `topLogoFilename` (filename for the top logo, empty string for no logo, should accept SVG or DXF)
    *   `topLogoScale` (scale factor for the top logo, 1 being full size)
    *  `bottomLogoFilename` (filename for the bottom logo, empty string for no logo, should accept SVG or DXF)
    *  `bottomLogoScale` (scale factor for the bottom logo, 1 being full size)
*   **Latches:**
    *   `latchType` (integer selection: 0 for tab/slot, 1 for buckle, 2 for magnet)
    *   `latchWidth` (for tab/slot and buckle latches)
*   **Magnet Latch:**
    *   `magnetPosition` (float: 0 for magnet on outside of box, 0.5 for centered, 1 for magnet inside of box)
    *   `magnetDiameter`
    *   `magnetHeight`
*   **Advanced:**
    *   `layerHeight` (for print precision settings)
    *   `logoInsetDivisor` (determines how deep the logos are inset, 0 for same as layerHeight, otherwise `wallThickness / logoInsetDivisor`)
*   **Hidden:**
    *   `hingeOuter` (diameter of the outside of the hinge)
    *   `hingeInner` (diameter of the hinge pin)
    *   `hingeInnerSlop` (slop between the hinge pin and the hinge)
    *   `hingeFingerSlop` (slop of the finger hinge pieces)
    *   `fingerLength` (length of the fingers that make the hinges)
    *   `fingerSize` (width of the finger hinge pieces)
    *  `topFingerSize` (width of the top finger hinge pieces)
    *   `magnetSlop` (slop of the magnet hole)

The design should generate a top and a bottom part of the box with appropriate hinge mechanisms and the specified latch. The logos should be inset into the top and bottom faces as specified by `logoInsetDivisor`. I'd like to have the design be efficient, so try to take advantage of `hull()` where it makes sense and make the code easy to read. I'm not worried about the exact dimensions of the hinges since the given code handles those pretty well.

Also please use `$fn = 100;` for the render quality.

[Assistant]
Hinged_Box.scad:
```
// -*- mode: scad; tab-width: 2 -*-

// Parametric Hinged Box With Latch and Logos and Printable In One Piece.
// Remix from https://www.thingiverse.com/thing:82533 and https://www.thingiverse.com/thing:82620
// by Mose Valvassori <moise.valvassori@gmail.com>. 2021
// v1.0.0 first publish
// v1.0.1 fixing buckle holder postion
// v1.0.2 fixing Y logos postions

latchType = 0; // [0:latch,1:buckle,2:magnet]
/* [Basic Sizes] */
// Width of the box. (Outside)
width = 40; //[5:0.1:100]
// Depth of the box. (Outside)
depth = 40;//[5:0.1:250]
// Height of the box. (Outside)
height = 15;//[5:0.1:200]
wallThickness = 1.5;
/* [Logo] */
// Top logo filename. When empty, no logo displayed. Dxf or SVG file expected.
topLogoFilename="t_drawing.svg"; //No Logo
// Logo scaling. 1: full size
topLogoScale = 0.5; // [0:0.01:1]
// Bottom logo filename. When empty, no logo displayed. Dxf or SVG file expected.
bottomLogoFilename="b_drawing.svg"; //No Logo
// Logo scaling. 1: full size
bottomLogoScale = 0.5; // [0:0.01:1]
/* [Latch] */
latchWidth = 8;

/* [Magnet] */
magnetPosition = 0; // [0:Out, 0.5:Center, 1:In]
magnetDiameter = 8;
magnetHeight = 0.9;

/* [Advanced] */
// 3D print layer height
layerHeight = 0.3; // [0.3, 0.2, 0.15, 0.10, 0.07, 0.05]
// layerHeight or wallThickness / logoInsetDivisor
logoInsetDivisor = 0.0; // [0.0:layerHeight, 1.5:3/2, 2.0:2, 3.0:3, 4.0:4, 5.0:5]
hingeOuter = 7;
hingeInner = 4;
hingeInnerSlop = .4;
hingeFingerSlop = .4;
fingerLength = hingeOuter/1.65;
fingerSize = 6.5;
topFingerSize = fingerSize;
magnetSlop = 0.5;

/* [Hidden] */
logoInsetHeight = logoInsetDivisor > 0 ? wallThickness / logoInsetDivisor : layerHeight;
$fn = 100;

bottom();
top();
if (latchType == 1)
	bucklebuckleBottom();

module bottom() {
	union() {
		// main box and cutout
		difference() {
			translate([-width - fingerLength, -depth/2, 0]) {
				cube([width,depth,height]);
			}
			translate([(-width - fingerLength) + wallThickness, -depth/2 + wallThickness, wallThickness]) {
				cube([width - (wallThickness * 2), depth - (wallThickness * 2), height]);
			}

			if (latchType == 0)
				originalLatchCutout();

			if (bottomLogoFilename)
				 BottomLogo();
		}

		if (latchType == 0)
			originalLatchCylinder();
		else if (latchType == 1)
			buckleBottom();
		else if (latchType == 2)
			magnetBottom();

		difference() {
			hull() {
				translate([0,-depth/2,height]) {
					rotate([-90,0,0]) {
						cylinder(r = hingeOuter/2, h = depth);
					}
				}
				translate([-fingerLength - .1, -depth/2,height - hingeOuter]){
					cube([.1,depth,hingeOuter]);
				}
				translate([-fingerLength, -depth/2,height-.1]){
					cube([fingerLength,depth,.1]);
				}
				translate([0, -depth/2,height]){
					rotate([0,45,0]) {
						cube([hingeOuter/2,depth,.01]);
					}
				}
			}
			// finger cutouts

			for  (i = [-depth/2 + fingerSize:fingerSize*2:depth/2]) {
				translate([-fingerLength,i - (fingerSize/2) - (hingeFingerSlop/2),0]) {
					cube([fingerLength*2,fingerSize + hingeFingerSlop,height*2]);
				}
			}
		}

		// center rod
		translate([0, -depth/2, height]) {
			rotate([-90,0,0]) {
				cylinder(r = hingeInner /2, h = depth);
			}
		}
	}
}

module originalLatchCutout(){
	// latch cutout
	translate([-width - fingerLength + (wallThickness/2), (-latchWidth/2) - (hingeFingerSlop/2), wallThickness]) {
		cube([wallThickness/2 + .1, latchWidth + hingeFingerSlop, height]);
	}
}

module originalLatchCylinder(){
	//latch cylinder
	difference() {
		translate([-width - fingerLength + (wallThickness/2), -latchWidth/2, height - 1]) {
			rotate([-90,0,0]) {
				cylinder(r = 1, h = latchWidth);
			}
		}
		// front wall wipe
		translate([-width - fingerLength - 5, -depth/2,0]) {
			cube([5,depth,height]);
		}
	}
}

module buckleBottom(){
	// new latch
	difference() {
		hull() {
			translate([-(fingerLength*2) - width,-latchWidth,height-2.25]) {
				rotate([-90,0,0]) {
					cylinder(r = hingeOuter/2, h = latchWidth*2);
				}
			}
			translate([-width - fingerLength, -latchWidth, height-hingeOuter-2.25]) {
				cube([.1, latchWidth * 2, hingeOuter]);
			}
			translate([-(fingerLength*2) -width, -latchWidth,height-2.25]){
				cube([fingerLength,latchWidth * 2,.1]);
			}
			translate([-(fingerLength*2) -width, -latchWidth,height-2.25]){
				rotate([0,-20,0]) {
					cube([hingeOuter-wallThickness,latchWidth*2,.01]);
				}
			}
		}
		translate([-(fingerLength*3) - width, -(latchWidth/2) - hingeFingerSlop,0]) {
			cube([fingerLength*3, latchWidth + hingeFingerSlop * 2,height*2]);
		}
	}
	// latch rod
	translate([-(fingerLength*2) -width, -latchWidth/2 - hingeFingerSlop, height-2.25]) {
		rotate([-90,0,0]) {
			cylinder(r = hingeInner /2, h = latchWidth + (hingeFingerSlop*2));
		}
	}
}

module bucklebuckleBottom() {
	difference() {
		union() {
			hull() {
				translate([-(fingerLength *2) - width,-latchWidth/2,height-2.25]) {
					rotate([-90,0,0]) {
						cylinder( r = hingeOuter /2, h = latchWidth);
					}
				}
				translate([-fingerLength*2 - width,-latchWidth/2,height-hingeOuter-2.25]) {
					rotate([0,20,0]) {
						cube([.1,latchWidth,hingeOuter]);
					}
				}

			}
			translate([-fingerLength*2 - width -2.6 + hingeOuter/2 - wallThickness,-latchWidth/2,0]) {
				cube([2.5,latchWidth,height-4.5]);
			}
			// latch foot
			translate([-fingerLength*3 - width - 2.6,-latchWidth/2,0]) {
				cube([hingeOuter/2 + fingerLength,latchWidth,wallThickness]);
			}
			// latch cylinder catch
			translate([-fingerLength*3 - width + 1 - 2.6,-latchWidth/2,wallThickness]) {
				rotate([-90,0,0]) {
					cylinder(r = 1, h = latchWidth);
				}
			}
		}
		translate([-(fingerLength *2) - width,-latchWidth/2 - .1,height-2.25]) {
			rotate([-90,0,0]) {
				cylinder( r = hingeInner /2 + hingeInnerSlop, h = latchWidth + .2);
			}
		}
	}
}

module magnetBottom () {
	h = magnetHeight + magnetSlop;
	ho = h + wallThickness + layerHeight;
	d = magnetDiameter + magnetSlop;
	do = d + wallThickness*2;
	translate([wallThickness*(2-magnetPosition) -do*(1-magnetPosition)-width,0,height-ho]){
		difference(){
			union(){
				cylinder(d=do, h=ho);
				if (magnetPosition != 0.5)
					translate([-magnetPosition*do/2,-do/2,0]) cube([do/2,do,ho]);
			}
			translate([0,0,wallThickness]) cylinder(d=d, h=h);
		}

		hull() {
			union(){
				cylinder(d=do, h=magnetSlop);
				if (magnetPosition != 0.5)
				translate([-magnetPosition*do/2,-do/2,0]) cube([do/2,do,magnetSlop]);
			}
			translate([d/2-magnetPosition*(do/2+wallThickness*2),0,-do*2/3])
				scale([0.01,1/3,1])	cylinder(d=do, h=h);
		}
	}
}

module BottomLogo () {
	logoSize = min(width,depth);
	scaledLogoSize = logoSize*bottomLogoScale;

	translate ([- (fingerLength + width/2) - scaledLogoSize/2,
							scaledLogoSize/2,
							-logoInsetHeight]) {
		resize([scaledLogoSize,scaledLogoSize,logoInsetHeight*2]) {
			mirror([0,1,0]) linear_extrude(height = 4) import(bottomLogoFilename);
	}
}
}

////////////////////////////////////////////////////////////
//////   TOP   /////////////////////////////////////////////
////////////////////////////////////////////////////////////

module top() {
	union() {
		difference() {
			translate([fingerLength, -depth/2, 0]) {
				cube([width,depth,height - .5]);
			}

			translate([fingerLength + wallThickness, -depth/2 + wallThickness, wallThickness]) {
				cube([width - (wallThickness * 2), depth - (wallThickness * 2), height]);
			}

			if (topLogoFilename)
				TopLogo();
		}

		if (latchType == 0)
			latch();
		else if (latchType == 1)
			buckleTop();
		else if (latchType == 2)
			magnetTop();

		difference() {
			hull() {
				translate([0,-depth/2,height]) {
					rotate([-90,0,0]) {
						cylinder(r = hingeOuter/2, h = depth);
					}
				}
				translate([fingerLength, -depth/2,height - hingeOuter - .5]){
					cube([.1,depth,hingeOuter - .5]);
				}
				translate([-fingerLength/2, -depth/2,height-.1]){
					cube([fingerLength,depth,.1]);
				}
				translate([0, -depth/2,height]){
					rotate([0,45,0]) {
						cube([hingeOuter/2,depth,.01]);
					}
				}
			}
			// finger cutouts
			for  (i = [-depth/2:fingerSize*2:depth/2 + fingerSize]) {
				translate([-fingerLength,i - (fingerSize/2) - (hingeFingerSlop/2),0]) {
					cube([fingerLength*2,fingerSize + hingeFingerSlop,height*2]);
				}
				if (depth/2 - i < (fingerSize * 1.5)) {
					translate([-fingerLength,i - (fingerSize/2) - (hingeFingerSlop/2),0]) {
						cube([fingerLength*2,depth,height*2]);
					}
				}
			}

			// center cutout
			translate([0, -depth/2, height]) {
				rotate([-90,0,0]) {
					cylinder(r = hingeInner /2 + hingeInnerSlop, h = depth);
				}
			}
		}
	}
}

module latch(){
	//latch
	translate([width + fingerLength - wallThickness - 1.5, (-latchWidth/2), wallThickness]) {
		cube([1.5, latchWidth, height - .5 + 4 - wallThickness]);
	}
	translate([width + fingerLength - wallThickness, -latchWidth/2, height - .5 + 3]) {
		rotate([-90,0,0]) {
			cylinder(r = 1, h = latchWidth);
		}
	}
}

module buckleTop(){
	bt = 7.5;
	// new latch
	difference() {
		hull() {
			translate([(fingerLength*2) + width,-latchWidth, bt]) {
				rotate([-90,0,0]) {
					cylinder(r = hingeOuter/2, h = latchWidth*2);
				}
			}
			translate([width + fingerLength, -latchWidth, 0]) {
				cube([.1, latchWidth * 2, hingeOuter]);
			}
			translate([fingerLength + width, -latchWidth,bt]){
				cube([fingerLength,latchWidth * 2,.1]);
			}
			translate([fingerLength + width, -latchWidth,bt + (hingeOuter/1.5)]){
				rotate([0,45,0]) {
					cube([hingeOuter,latchWidth*2,.01]);
				}
			}
		}
		translate([fingerLength + width, -(latchWidth/2) - hingeFingerSlop,0]) {
			cube([fingerLength*2, latchWidth + (hingeFingerSlop * 2),height*2]);
		}
	}
	// latch rod
	translate([(fingerLength*2) + width, -latchWidth/2 - hingeFingerSlop, bt]) {
		rotate([-90,0,0]) {
			cylinder(r = hingeInner /2, h = latchWidth + (hingeFingerSlop*2));
		}
	}
}

module magnetTop () {
	h = magnetHeight + magnetSlop;
	ho = h + wallThickness + layerHeight;
	d = magnetDiameter + magnetSlop;
	do = d + wallThickness*2;
	translate([do+width - wallThickness*2 -do*magnetPosition ,0,height-ho - 0.5]){ /* Oops, this 0.5 breaks the magnet alignement... */
		difference(){
			union(){
				cylinder(d=do, h=ho);
				if (magnetPosition != 0.5)
					translate([-(1-magnetPosition)*do/2,-do/2,0]) cube([do/2,do,ho]);
			}
			translate([0,0,wallThickness]) cylinder(d=d, h=h);
		}

		hull() {
			union(){
				cylinder(d=do, h=magnetSlop);
				if (magnetPosition != 0.5)
					translate([-(1-magnetPosition)*do/2,-do/2,0]) cube([do/2,do,magnetSlop]);
			}
			translate([-d/2+magnetPosition*(do-wallThickness),0,-do*2/3])
				scale([0.01,1/3,1])	cylinder(d=do, h=h);
		}
	}
}

module TopLogo () {
	logoSize = min(width,depth);
	scaledLogoSize = logoSize*topLogoScale;

	translate ([fingerLength + width/2 - scaledLogoSize/2,
							scaledLogoSize/2,
							-logoInsetHeight]) {
		resize([scaledLogoSize,scaledLogoSize,logoInsetHeight*2]) {
			mirror([0,1,0])	linear_extrude(height = 4) import(topLogoFilename);
		}
	}
}

```


[User]
I need a parametric design for a plug, kind of like a bottle cap, but with a peg on it, and an optional matching counterpart that the peg fits into. The cap should have a circular shape, and the peg should protrude from the center of the bottom of the cap. The counterpart, if included, should be a flat circular piece with a hole in it that matches the peg.

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

**For the Cap:**
*   `cap_diameter`: The overall diameter of the cap.
*   `cap_thickness`: The thickness of the cap's flat top.
*   `cap_fillet`: The radius of the fillet between the flat top and the side of the cap.
*   `plug_diameter`: The diameter of the plug/peg.
*   `plug_length`: The length of the plug/peg.
*   `plug_hollow`: A boolean (1 or 0) to indicate if the plug/peg should be hollow or solid.
*   `plug_wall_thickness`: If the plug/peg is hollow, the thickness of the walls.

**For the Counterpart (optional):**
*   `counterpart`: A boolean (1 or 0) to indicate if the counterpart should be generated.
*  `counterpart_use_cap_meassurements`: A boolean (1 or 0) to indicate if the counterpart should use the cap's diameter, thickness and fillet or have its own specific values. If 1 (true), the counterpart's diameter, thickness, and fillet should be the same as the cap. If 0 (false), then the following parameters will be used to specify the counterpart's dimensions.
*  `counterpart_diameter`: If `counterpart_use_cap_meassurements` is 0, the diameter of the counterpart.
*   `counterpart_thickness`: If `counterpart_use_cap_meassurements` is 0, the thickness of the counterpart.
*  `counterpart_fillet`: If `counterpart_use_cap_meassurements` is 0, the radius of the fillet on the counterpart.
*   `counterpart_plug_clearance`: The clearance between the plug and the hole in the counterpart.

I'd like to be able to define all dimensions in millimeters (mm).

Also, I need to be able to change `$fn` for circular resolution.

I think that's all the details, can you provide the OpenSCAD code? I'm not using any additional libraries.

[Assistant]
parametric_plug.scad:
```
/* [Plug] */

// [mm]
cap_diameter = 14;
// [mm]
cap_thickness = 1.8;
// [mm]
cap_fillet = 0.6;

// [mm]
plug_diameter  = 8;
// [mm]
plug_length = 2.2;
plug_hollow = 1; // [1:true, 0:false]
// [mm]
plug_wall_thickness = 1;

/* [Counterpart] */

// Print a matching counterpart to glue in place.
counterpart = 1; // [1:true, 0:false]

// Reuse the below values from the cap settings.
counterpart_use_cap_meassurements = 1; // [1:true, 0:false]

// [mm]
counterpart_diameter = 14;
// [mm]
counterpart_thickness = 1.0;
// [mm]
counterpart_fillet = 0.4;

/* [Misc] */

// [mm]
counterpart_plug_clearance = 0.1;

// $fn sets the number of segments in a circle.
$fn = 25;

plug_hollow_calculated =
    plug_hollow && plug_diameter > plug_wall_thickness*2;

rotate_extrude() cap_cut();
if (counterpart)
    translate([cap_diameter+5,0,0]) rotate_extrude()
    counterpart_cut();

module cap_cut() {
    cap_r = cap_diameter/2;
    plug_r = plug_diameter/2;

    base = [
        [0, 0],
        [cap_r-cap_fillet, 0],
        [cap_r, cap_fillet],
        [cap_r, cap_thickness],
        [plug_r, cap_thickness],
        [plug_r, cap_thickness+plug_length]
    ];

    cut = plug_hollow_calculated ?
        concat(base, [
        [plug_r-plug_wall_thickness, cap_thickness+plug_length],
        [plug_r-plug_wall_thickness, cap_thickness],
        [0, cap_thickness]
    ]) :
        concat(base, [
        [0, cap_thickness+plug_length]
    ]);

    polygon(cut);
}

module counterpart_cut() {
    counterpart_diameter = counterpart_use_cap_meassurements ?
        cap_diameter :
        counterpart_diameter;
    counterpart_thickness = counterpart_use_cap_meassurements ?
        cap_thickness :
        counterpart_thickness;
    counterpart_fillet = counterpart_use_cap_meassurements ?
        cap_fillet :
        counterpart_fillet;

    cp_r = counterpart_diameter/2;
    plug_r = plug_diameter/2-plug_wall_thickness-counterpart_plug_clearance;

    base = [
            [0, 0],
            [cp_r-counterpart_fillet, 0],
            [cp_r, counterpart_fillet],
            [cp_r, counterpart_thickness],
    ];

    cut = plug_hollow_calculated ?
        concat(base, [
        [plug_r, counterpart_thickness],
        [plug_r, counterpart_thickness+plug_length],
        [0, counterpart_thickness+plug_length]
    ]) :
        concat(base, [
        [0, counterpart_thickness]
    ]);

    polygon(cut);
}

```