quasar-firewall.scad

   1 eps = 0.01;
   2 infty = 100;
   3
   4 base_d = 20;
   5
   6 wall = 1.5;
   7 base_wall = 2.5;
   8
   9 center_d = 8 + 0.3;
  10
  11 foam_horiz = 6 + 0.3;
  12 foam_vert = 6 + 0.6;
  13 support_h = 50;
  14
  15 top_d = foam_horiz + 8;
  16 side_w = 40;
  17
  18 screw_dist = 31.5;
  19 screw_d = 3;
  20
  21 // half of the diamond diagonals
  22 diamond_x = 12;
  23 diamond_y = 32;
  24 diamond_wall_h = 4;
  25 diamond_x1 = 9;
  26 diamond_y1 = 27;
  27 diamond_x2 = 7;
  28 diamond_y2 = 21;
  29
  30 module body() {
  31         // base circle
  32         cylinder(r = base_d/2, h = base_wall);
  33         // diamond front
  34         scale([1, diamond_y/diamond_x, 1])
  35                 cylinder(r = diamond_x, h = base_wall, $fn = 4);
  36         difference() {
  37                 scale([1, diamond_y1/diamond_x1, 1])
  38                         cylinder(r = diamond_x1, h = base_wall + diamond_wall_h, $fn = 4);
  39                 translate([0, 0, base_wall])
  40                 scale([1, diamond_y2/diamond_x2, 1])
  41                         cylinder(r = diamond_x2, h = diamond_wall_h+eps, $fn = 4);
  42         }
  43         // wing front
  44         translate([-side_w/2, -foam_horiz/2-wall, 0])
  45                 cube([side_w, foam_horiz+2*wall, base_wall]);
  46         for (x = [-1, 1]) scale([x, 1, 1])
  47                 hull() {
  48                         translate([base_d/2, -foam_horiz/2-wall, 0])
  49                                 cube([side_w/2-base_d/2, foam_horiz+2*wall, eps]);
  50                         translate([base_d*.9, -foam_horiz/2-wall, 20])
  51                                 cube([side_w/2-base_d*.55, foam_horiz+2*wall, eps]);
  52                 }
  53 }
  54
  55 difference() {
  56         body();
  57         // screw holes
  58         for (angle = [0:90:360])
  59                 rotate([0, 0, angle])
  60                 translate([screw_dist/2, 0, -eps])
  61                 cylinder(r = screw_d/2, h = base_wall + 2*eps);
  62         // tube hole
  63         translate([0, 0, -eps])
  64                 cylinder(r = center_d/2, h = base_wall + 2*eps);
  65         // horizontal foam
  66         difference() {
  67                 translate([-infty/2, -foam_horiz/2, base_wall])
  68                         cube([infty, foam_horiz, support_h + eps]);
  69                 translate([-diamond_x1, 0, base_wall])
  70                         cube([2*diamond_x1, foam_horiz/2, support_h + eps]);
  71         }
  72         // cable hole
  73         translate([6, 6, -eps])
  74                 rotate([0, 0, -45])
  75                 scale([1, 1/2, 1])
  76                 cylinder(r = 4, h = support_h + base_wall + 2*eps);
  77         // vertical foam
  78         // translate([-foam_vert/2, -side_w/2-eps, base_wall])
  79         //      cube([foam_vert, side_w + 2*eps, support_h + eps]);
  80 }
  81