cable-hole-trunking-cover.scad

   1 // -*- C -*-
   2
   3 holedia = 25.4;
   4
   5 sidewidth = 5;
   6 tapewidth = 7;
   7
   8 basex = holedia + sidewidth*2;
   9 basey = holedia + tapewidth*2;
  10
  11 bevelz = 3;
  12 bevelslope = 0.75;
  13 bevely = bevelz * bevelslope;
  14
  15 basebaset = 2;
  16 basebevelt = 3;
  17
  18 module sheared_cube(sz, xperz, yperz) {
  19   multmatrix([[1,0,xperz,0],
  20               [0,1,yperz,0],
  21               [0,0,1,    0],
  22               [0,0,0,    1]])
  23     cube(sz);
  24 }
  25
  26 module Base(){
  27   difference(){
  28     union(){
  29       translate([0, basey-basebevelt, 0])
  30         sheared_cube([basex, basebevelt, bevelz], 0, bevelslope);
  31       sheared_cube([basex, basebevelt, bevelz], 0, -bevelslope);
  32       cube([basex, basey, basebaset]);
  33     }
  34     translate([basex/2, basey/2, -1])
  35       cylinder(r=holedia/2, h=bevelz+2);
  36   }
  37
  38 //  sheared_cube([10,20,30], 0.5, 3);
  39 //  cube([basew, baseh, 0.1]);
  40 //  translate([
  41 }
  42
  43 Base();