fin-joiner.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_l = 25;
   9
  10 stab_tube_off = 3;
  11 pulley_d = 10;
  12
  13 fuse_tube_d = 8.0;
  14 fuse_tube_l = 12;
  15
  16 slot_w = 3;
  17
  18 base_d = 15;
  19 base_h = 0.6;
  20
  21 module body() {
  22         // fuse tube
  23         cylinder(r = fuse_tube_d/2 + wall, h = fuse_tube_l);
  24
  25         // stab tube
  26         hull() {
  27                 translate([fuse_tube_d/2 + wall + stab_tube_off, 0, stab_tube_d/2+wall])
  28                 rotate([0, 90, 0])
  29                         cylinder(r = stab_tube_d/2+wall, h = stab_tube_l);
  30                 translate([fuse_tube_d/2 + wall + stab_tube_off, -stab_tube_d/2, 0])
  31                         cube([stab_tube_l, stab_tube_d, eps]);
  32         }
  33         // joiner
  34         hull() {
  35                 // stab tube tip
  36                 translate([fuse_tube_d/2 + wall + stab_tube_off + stab_tube_l - eps,
  37                         -thin_wall/2, stab_tube_d + 1.5*wall])
  38                         cube([eps, thin_wall, eps]);
  39                 // fuse tube tip
  40                 translate([fuse_tube_d/2 + wall/2, -thin_wall/2, fuse_tube_l - eps])
  41                         cube([eps, thin_wall, eps]);
  42                 translate([fuse_tube_d/2 + wall/2, -3*wall/2, stab_tube_d+1.5*wall])
  43                         cube([eps, 3*wall, eps]);
  44         }
  45 }
  46
  47 difference() {
  48         body();
  49         // fuse tube
  50         translate([0, 0, -eps])
  51                 cylinder(r = fuse_tube_d/2, h = fuse_tube_l + 2*eps);
  52         // fuse slot
  53         translate([-fuse_tube_d, -slot_w/2, -eps])
  54                 cube([fuse_tube_d, slot_w, fuse_tube_l + 2*eps]);
  55         // stab tube
  56         translate([0, 0, stab_tube_d/2+wall])
  57         rotate([0, 90, 0])
  58                 cylinder(r = stab_tube_d/2, h = stab_tube_l + stab_tube_off + fuse_tube_d/2 + wall + eps );
  59 }
  60