808-lens-holder.scad

   1 infty = 100;
   2 eps = 0.01;
   3
   4 lens_size = 9;
   5 lens_depth = 2;
   6 wall = 1.5;
   7
   8 difference() {
   9         translate([-lens_size/2-wall, 0, 0])
  10                 cube([lens_size+2*wall, 2*wall+lens_depth, wall+lens_size]);
  11         // lens body
  12         translate([-lens_size/2, wall, wall])
  13                 cube([lens_size, lens_depth, lens_size + eps]);
  14         // lens front
  15         translate([-lens_size/2+wall, wall, -eps])
  16                 cube([lens_size-2*wall, lens_depth+wall+eps, lens_size + wall + 2*eps]);
  17 }
  18
  19 base_d = 5;
  20 rear_l = 20;
  21
  22 // rear base
  23 translate([-base_d/2, -rear_l, 0])
  24         cube([base_d, base_d, wall]);
  25
  26 // rear stem
  27 hull() {
  28         translate([-wall/2, -rear_l+base_d/2, 0])
  29                 cube([wall, base_d/2, wall]);
  30         translate([-wall/2, 0, 0])
  31                 cube([wall, eps, 3*wall]);
  32 }
  33
  34 side_l = 20;
  35 for (i=[-1, 1]) scale([i, 1, 1]) {
  36         // side squares
  37         translate([side_l-base_d, -base_d, 0])
  38                 cube([base_d, base_d, wall]);
  39
  40         // side stem
  41         hull() {
  42                 translate([side_l-base_d/2, -base_d/2, 0])
  43                         cylinder(r = wall, h = wall, $fn = 32);
  44                 translate([lens_size/2+wall-eps, 0, 0])
  45                         cube([eps, wall, 3*wall]);
  46         }
  47
  48         // side to rear beam
  49         hull() {
  50                 translate([side_l-base_d/2, -base_d/2, 0])
  51                         cylinder(r = wall/2, h = wall, $fn = 32);
  52                 translate([0, -rear_l+base_d/2, 0])
  53                         cylinder(r = wall, h = wall, $fn = 32);
  54         }
  55 }