kitchen-bar-hook.scad

   1 // hook for the aluminium kitchen bar from IKEA
   2
   3 infty=200;
   4 eps=0.01;
   5
   6 bar_w = 3.5 + 0.7;
   7 bar_h = 29.3 + 0.5;
   8 bar_to_wall = 27; // incl. the bar itself
   9
  10 wall = 3.1;
  11 upper_overhang = 10.0 - wall;
  12 lower_overhang = 2.0;
  13
  14 body_h = 8;
  15
  16 clip_front = 5; // stronger than wall for this object
  17
  18 // coordinates: front end of the bar is the xz plane, centered by the x axis,
  19 // +x is the upper part, -x is lower, +y is front
  20
  21 module clip(body_h) {
  22         // front part
  23         translate([-bar_h/2-wall, 0, 0])
  24                 cube([bar_h + 2*wall, clip_front, body_h]);
  25         // upper and lower horizontal bars
  26         for (x = [-1, 1]) scale([x, 1, 1])
  27                 translate([bar_h/2, -bar_w -wall, 0])
  28                         cube([wall, bar_w + 2*wall, body_h]);
  29         // upper overhang
  30         translate([bar_h/2-upper_overhang, -bar_w-wall, 0])
  31                 cube([upper_overhang + wall, wall, body_h]);
  32         // lower overhang
  33         translate([-bar_h/2-wall, -bar_w-wall, 0])
  34                 difference() {
  35                         cube([lower_overhang + wall, wall, body_h]);
  36                         translate([lower_overhang + wall, 2*wall/3, 0])
  37                                 rotate([0, 0, -45])
  38                                         translate([0, -infty/2, -infty/2])
  39                                         cube(infty);
  40                 }
  41 }
  42
  43 // make the top of the clip be at x = 0
  44 translate([-bar_h/2-wall, 0, 0])
  45         clip(body_h);
  46
  47 top_len = 55;
  48 hook_y = 40;
  49 hook_base_w = 12;
  50 hook_xoff = 15; // from the top
  51 hook_end_l = 2;
  52
  53 translate([-eps, -bar_w-wall, 0])
  54         hull() {
  55                 cube([eps, clip_front + bar_w + wall, body_h]);
  56                 translate([top_len-eps, 0, 0])
  57                 cube([eps, wall, body_h]);
  58         }
  59
  60 hull() {
  61         translate([top_len-wall, hook_y, 0])
  62                 cube([wall, eps, body_h]);
  63         translate([top_len-hook_xoff-hook_base_w, -bar_w-wall, 0])
  64                 cube([hook_base_w, eps, body_h]);
  65 }
  66
  67 translate([top_len-wall, hook_y-wall, 0])
  68         cube([wall+hook_end_l, wall, body_h]);
  69
  70