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 = 3.0 + 0.5;
   8 stab_tube_d2 = stab_tube_d;
   9 stab_tube_l = 20;
  10
  11 fuse_tube_d = 8.0;
  12 fuse_tube_l = 12;
  13
  14 slot_w = 3;
  15
  16 base_d = 15;
  17 base_h = 0.6;
  18
  19 module body() {
  20         // fuse tube
  21         hull() {
  22                 translate([-fuse_tube_d/2-wall, -fuse_tube_l/2, 0])
  23                         cube([fuse_tube_d + wall, fuse_tube_l, eps]);
  24                 translate([0, fuse_tube_l/2, fuse_tube_d/2+wall])
  25                 rotate([90, 0, 0])
  26                         cylinder(r = fuse_tube_d/2 + wall, h = fuse_tube_l);
  27         }
  28         // stab tube
  29         hull() {
  30                 translate([-fuse_tube_d/2-wall, fuse_tube_l/2-eps, 0])
  31                         cube([stab_tube_l, stab_tube_d2+2*eps, eps]);
  32                 translate([-fuse_tube_d/2-wall, fuse_tube_l/2+stab_tube_d2/2, stab_tube_d2/2+wall])
  33                 rotate([0, 90, 0])
  34                         cylinder(r = stab_tube_d2/2+wall+eps, h = stab_tube_l);
  35         }
  36 }
  37
  38 difference() {
  39         body();
  40         // fuse tube hole
  41         translate([0, fuse_tube_l/2+eps, fuse_tube_d/2+wall])
  42         rotate([90, 0, 0])
  43                 cylinder(r = fuse_tube_d/2, h = fuse_tube_l + 2*eps);
  44         // fuse tube slot
  45         translate([-slot_w/2, -fuse_tube_l/2-eps, fuse_tube_d/2+wall])
  46                 cube([slot_w, fuse_tube_l + 2*eps, fuse_tube_d/2+wall+eps]);
  47
  48         // stab tube
  49         translate([-fuse_tube_d/2-wall-eps, fuse_tube_l/2 + stab_tube_d2/2, stab_tube_d2/2 +wall])
  50         rotate([0, 90, 0])
  51                 cylinder(r = stab_tube_d2/2, h = stab_tube_l + 2*eps);
  52 }
  53
  54 // endpoint stopper
  55
  56 translate([0, 2*fuse_tube_l, 0])
  57 difference() {
  58         union() {
  59                 cylinder(r = stab_tube_d/2 + wall, h = wall);
  60                 translate([0, 0, wall-eps])
  61                         cylinder(r1 = stab_tube_d/2 + wall, r2 = stab_tube_d/2+thin_wall, h = wall);
  62         }
  63         translate([0, 0, -eps])
  64                 cylinder(r = stab_tube_d/2, h = 2*wall + 2*eps);
  65 }
  66