quasar-firewall.scad

   1 eps = 0.01;
   2 infty = 100;
   3
   4 base_d = 28;
   5 screw_d1 = 19;
   6 screw_d2 = 16;
   7 screw_hole = 3.5;
   8 base_wall = 1.5;
   9 wall = base_wall;
  10
  11 center_d = 8 + 0.3;
  12
  13 cable_slot_w = 5;
  14 cable_slot_h = 3;
  15
  16 foam_horiz = 6 + 0.6;
  17 foam_vert = 6 + 0.6;
  18 support_h = 50;
  19
  20 top_d = foam_horiz + 8;
  21 side_w = 40;
  22
  23 module body() {
  24         // base
  25         cylinder(r = base_d/2, h = base_wall);
  26         intersection() {
  27                 cylinder(r1 = side_w/2, r2 = top_d/2,
  28                          h = support_h + base_wall);
  29                 union() {
  30                         translate([-side_w/2, -foam_horiz/2-wall, 0])
  31                                 cube([side_w, foam_horiz + 2*wall, support_h]);
  32                         translate([-foam_vert/2-wall, -side_w/2, 0])
  33                                 cube([foam_vert + 2*wall, side_w, support_h]);
  34                 }
  35         }
  36 }
  37
  38 module screw_hole() {
  39         translate([0, 0, -eps])
  40                 cylinder(r = screw_hole/2, h = base_wall + 2*eps, $fn = 6);
  41         translate([0, 0, base_wall/2])
  42                 cylinder(r1 = screw_hole/2,
  43                         r2 = screw_hole/2 + base_wall/2,
  44                         h = base_wall/2+eps, $fn = 6);
  45         translate([0, 0, base_wall-eps])
  46                 cylinder(r = screw_hole/2 + base_wall/2, h = 2*base_wall + eps, $fn = 6);
  47 }
  48
  49 difference() {
  50         body();
  51         // screw holes
  52         rotate([0, 0, 45]) {
  53         for (x = [-1, 1]) translate([x*screw_d1/2, 0, 0])
  54                 screw_hole();
  55         for (y = [-1, 1]) translate([0, y*screw_d2/2, 0])
  56                 screw_hole();
  57         }
  58         // tube hole
  59         translate([0, 0, -eps])
  60                 cylinder(r = center_d/2, h = base_wall + 2*eps);
  61         // cable slot
  62         /*
  63         rotate([0, 0, 45])
  64         translate([-cable_slot_w/2, base_d/2-cable_slot_h, -eps])
  65                 cube([cable_slot_w, 2*cable_slot_h, infty]);
  66         */
  67         // horizontal foam
  68         translate([-side_w/2-eps, -foam_horiz/2, base_wall])
  69                 cube([side_w + 2*eps, foam_horiz, support_h + eps]);
  70         // vertical foam
  71         translate([-foam_vert/2, -side_w/2-eps, base_wall])
  72                 cube([foam_vert, side_w + 2*eps, support_h + eps]);
  73 }
  74