madstab-joiner-end.scad

   1 eps = 0.01;
   2 infty = 200;
   3
   4 wall = 1.5;
   5 thin_wall = 0.6;
   6
   7 stab_tube_d = 2.0 + 0.5;
   8 stab_tube_d2 = stab_tube_d;
   9 stab_tube_l = 20;
  10 stab_tube_wall = 1;
  11
  12 fuse_tube_d = 8.0;
  13 fuse_tube_l = 12;
  14
  15 slot_w = 3.5;
  16
  17 base_d = 15;
  18 base_h = 0.6;
  19
  20 module body() {
  21         // fuse tube
  22         hull() {
  23                 translate([-fuse_tube_d/2-wall, -fuse_tube_l/2, 0])
  24                         cube([fuse_tube_d + wall, fuse_tube_l, eps]);
  25                 translate([0, fuse_tube_l/2, fuse_tube_d/2+wall])
  26                 rotate([90, 0, 0])
  27                         cylinder(r = fuse_tube_d/2 + wall, h = fuse_tube_l);
  28         }
  29         // stab tube
  30         hull() {
  31                 translate([-fuse_tube_d/2-wall, fuse_tube_l/2-eps, 0])
  32                         cube([stab_tube_l, stab_tube_d2+2*eps, eps]);
  33                 translate([-fuse_tube_d/2-wall, fuse_tube_l/2+stab_tube_d2/2, stab_tube_d2/2+stab_tube_wall])
  34                 rotate([0, 90, 0])
  35                         cylinder(r = stab_tube_d2/2+stab_tube_wall+eps, h = stab_tube_l);
  36         }
  37 }
  38
  39 difference() {
  40         body();
  41         // fuse tube hole
  42         translate([0, fuse_tube_l/2+eps, fuse_tube_d/2+wall])
  43         rotate([90, 0, 0])
  44                 cylinder(r = fuse_tube_d/2, h = fuse_tube_l + 2*eps);
  45         // fuse tube slot
  46         translate([-slot_w/2, -fuse_tube_l/2-eps, fuse_tube_d/2+wall])
  47                 cube([slot_w, fuse_tube_l + 2*eps, fuse_tube_d/2+wall+eps]);
  48
  49         // stab tube
  50         translate([-fuse_tube_d/2-wall-eps, fuse_tube_l/2 + stab_tube_d2/2, stab_tube_d2/2 +stab_tube_wall])
  51         rotate([0, 90, 0])
  52                 cylinder(r = stab_tube_d2/2, h = stab_tube_l + 2*eps, $fn = 6);
  53 }
  54
  55 // endpoint stopper
  56
  57 translate([0, 2*fuse_tube_l, 0])
  58 difference() {
  59         union() {
  60                 cylinder(r = stab_tube_d/2 + wall, h = wall);
  61                 translate([0, 0, wall-eps])
  62                         cylinder(r1 = stab_tube_d/2 + wall, r2 = stab_tube_d/2+thin_wall, h = wall);
  63         }
  64         translate([0, 0, -eps])
  65                 cylinder(r = stab_tube_d/2, h = 2*wall + 2*eps);
  66 }
  67