camera-spring-base.scad

   1 infty = 200;
   2 eps = 0.01;
   3
   4 wall = 1.5;
   5
   6 ziptie_w = 4;
   7 ziptie_h = 3;
   8
   9 x_sep = 36;
  10
  11 corner_l = 9;
  12 corner_w = 3;
  13
  14 hole1_yoff = 20;
  15 hole2_yoff = 10;
  16
  17 body_w = 2*(hole1_yoff+ziptie_h/2+corner_w);
  18 body_l = x_sep + 2*ziptie_w + 2*corner_w;
  19
  20 hook_w = 2;
  21 hook_hole = 1.5;
  22
  23 difference() {
  24         union() {
  25                 translate([-body_l/2, -body_w/2, 0])
  26                         cube([body_l, body_w, wall]);
  27
  28                 // support raised corners
  29                 for (x = [-1, 1]) for (y = [-1, 1]) scale([x, y, 1]) {
  30                         translate([body_l/2-corner_w, body_w/2-corner_l, 0])
  31                                 cube([corner_w, corner_l, 2*wall]);
  32                         translate([x_sep/2-corner_w, body_w/2-corner_l, 0])
  33                                 cube([corner_w, corner_l, 2*wall]);
  34                 }
  35
  36                 // rubber hooks
  37                 for (x = [-1, 1]) for (y = [-1, 1]) scale([x, y, 1]) {
  38                         translate([body_l/2-eps, body_w/2-hook_w, 0])
  39                                 cube([hook_w+hook_hole+eps, hook_w, wall]);
  40                         translate([body_l/2+hook_hole, body_w/2-hook_w-hook_hole, 0])
  41                                 cube([hook_w, 2*hook_hole+2*hook_w, wall]);
  42                         translate([body_l/2, body_w/2+hook_hole, 0])
  43                                 cube([hook_w+hook_hole, hook_w, wall]);
  44                 }
  45         }
  46
  47         // center hole
  48         translate([-x_sep/2+corner_w, -body_w/2+corner_l, -eps])
  49                 cube([x_sep-2*corner_w, body_w-2*corner_l, 2*wall+2*eps]);
  50
  51         // ziptie angles
  52         for (x = [-1, 1]) for (y = [-1, 1]) for (y1 = [-hole2_yoff, hole1_yoff])
  53                 scale([x, y, 1]) translate([x_sep/2, y1, wall])
  54                         rotate([-40, 0, 0])
  55                         translate([0, -ziptie_h/2, -infty/2])
  56                         cube([ziptie_w, ziptie_h, infty]);
  57 }