fire-blanket-wall-mushroom.scad

   1 // -*- C -*-
   2
   3 fudge=0.15;
   4
   5 screwrad = 4.5 / 2 + fudge; // xxx check
   6 shaftrad = 7.5 / 2 - fudge;
   7
   8 diskrad = 12.0 / 2 - fudge;
   9
  10 csinkpart = 0.5;
  11
  12 shaftlen = 8; // xxx check
  13
  14 diskthick = 1.5;
  15
  16 disktaperratio = 2;
  17
  18 // computed
  19
  20 disktaperrad = diskrad - diskthick / disktaperratio;
  21 totallen = shaftlen + diskthick;
  22
  23 module SidePlan(){
  24   polygon([[-screwrad, 0],
  25            [-disktaperrad, 0],
  26            [-diskrad, -diskthick],
  27            [-shaftrad, -diskthick],
  28            [-shaftrad, -totallen],
  29            [-screwrad, -totallen]]);
  30 }
  31
  32 module Bush(){
  33   rotate_extrude($fn=25, convexity=3){
  34     SidePlan();
  35   }
  36 }
  37
  38 //SidePlan();
  39 rotate([0,180,0])
  40   Bush();