servo-tube-holder-half.scad

   1 eps = 0.01;
   2 infty = 200;
   3
   4 wall = 1.5;
   5
   6 tube_d = 8.0 + 0.5;
   7
   8 clip_w = 6;
   9
  10 slot_w = 3;
  11 slot_angle = 180+45;
  12
  13 support_l = tube_d/2 + 10;
  14
  15 module clip(support_zoff) {
  16 difference() {
  17         union() {
  18                 // clip cylinder
  19                 cylinder(r = tube_d/2 + wall, h = clip_w);
  20                 // under the servo
  21                 hull() {
  22                         translate([0, tube_d/2+support_zoff - wall, 0])
  23                                 cube([tube_d/2+wall, wall, clip_w]);
  24                         translate([support_l-wall, tube_d/2+support_zoff - wall, 0])
  25                                 cube([wall, wall, clip_w/2]);
  26                 }
  27                 // vertical strut
  28                 hull() {
  29                         translate([support_l - eps, tube_d/2+support_zoff-wall, 0])
  30                                 cube([eps, wall, wall]);
  31                         translate([0, -tube_d/2-wall/2, 0])
  32                                 cube([eps, tube_d+wall/2+support_zoff, wall]);
  33                 }
  34
  35         }
  36
  37         // fuse tube
  38         translate([0, 0, -eps])
  39                 cylinder(r = tube_d/2, h = clip_w + 2*eps);
  40
  41         // slot
  42         rotate([0, 0, slot_angle])
  43         translate([0, -slot_w/2, -eps])
  44                 cube([tube_d, slot_w, clip_w + 2*eps]);
  45 }
  46 }
  47
  48 // clip(support_zoff = -2);
  49 for (x = [-1, 1]) scale([x, 1, 1]) translate([tube_d, tube_d, 0])
  50         clip(support_zoff = wall);
  51
  52 for (x = [-1, 1]) scale([x, -1, 1]) translate([tube_d, tube_d, 0])
  53         clip(support_zoff = wall-3);