madstab-joiner-end.scad

   1 eps = 0.01;
   2 infty = 200;
   3
   4 wall = 2.0;
   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         // side support
  38         hull() {
  39                 translate([fuse_tube_d/2 - eps, -fuse_tube_l/2, 0])
  40                         cube([eps, eps, thin_wall]);
  41                 translate([fuse_tube_d/2 - eps, fuse_tube_l/2-eps, 0])
  42                         cube([stab_tube_l - fuse_tube_d - wall, eps, thin_wall]);
  43         }
  44 }
  45
  46 difference() {
  47         body();
  48         // fuse tube hole
  49         translate([0, fuse_tube_l/2+eps, fuse_tube_d/2+wall])
  50         rotate([90, 0, 0])
  51                 cylinder(r = fuse_tube_d/2, h = fuse_tube_l + 2*eps);
  52         // fuse tube slot
  53         translate([-slot_w/2, -fuse_tube_l/2-eps, fuse_tube_d/2+wall])
  54                 cube([slot_w, fuse_tube_l + 2*eps, fuse_tube_d/2+wall+eps]);
  55
  56         // stab tube
  57         translate([-fuse_tube_d/2-wall-eps, fuse_tube_l/2 + stab_tube_d2/2, stab_tube_d2/2 +stab_tube_wall])
  58         rotate([0, 90, 0])
  59                 cylinder(r = stab_tube_d2/2, h = stab_tube_l + 2*eps, $fn = 6);
  60 }
  61
  62 // endpoint stopper
  63
  64 translate([0, 2*fuse_tube_l, 0])
  65 difference() {
  66         union() {
  67                 cylinder(r = stab_tube_d/2 + wall, h = wall);
  68                 translate([0, 0, wall-eps])
  69                         cylinder(r1 = stab_tube_d/2 + wall, r2 = stab_tube_d/2+thin_wall, h = wall);
  70         }
  71         translate([0, 0, -eps])
  72                 cylinder(r = stab_tube_d/2, h = 2*wall + 2*eps);
  73 }
  74