challenge-bot.com Git - challenge-bot/blob - 3d-printables/caster-standoff-dimensions.scad

   1 /* measured with calipers */
   2 ball_diameter = 11 + 0.75; // extra bit added for printing imprecision
   3 ball_radius = ball_diameter / 2;
   4
   5 standoff_height = 60; // kyle eyeballed
   6
   7 gap = 3;
   8 wall_thickness = 1;
   9 holder_floor = 3;
  10 holder_arms_length = 20;
  11 holder_height =
  12   holder_floor + holder_arms_length + (11 / 16) * ball_diameter;
  13
  14 holder_radius = ball_radius + wall_thickness;
  15 holder_diameter = holder_radius * 2;
  16
  17 standoff_radius = holder_radius; // 0.580 / 2 inches from spec sheet
  18 standoff_lower_portion_height = standoff_height - holder_height;
  19
  20 // eyeballed caster flange height, (0.580/5) inches, times 2 to be stronger
  21 caster_flange_height = 5;
  22 caster_flange_width = 20.32;  // 0.800 inches
  23
  24 deck_pitch = 25.4; // measured center to center on grid on pegboard
  25 deck_flange_height = 2.9464;
  26 deck_flange_screw_radius = 3.556 / 2;  // For #6 machine screws
  27 deck_flange_radius = (deck_pitch) / 2 + deck_flange_screw_radius + 3;