add some TODOs

[challenge-bot] / 3d-printables / caster-standoff-dimensions.scad

/* measured with calipers */
ball_diameter = 11 + 0.75; // extra bit added for printing imprecision
ball_radius = ball_diameter / 2;

standoff_height = 60; // kyle eyeballed

gap = 3;
wall_thickness = 1;
holder_floor = 3;
holder_arms_length = 20;
holder_height =
  holder_floor + holder_arms_length + (11 / 16) * ball_diameter;

holder_radius = ball_radius + wall_thickness;
holder_diameter = holder_radius * 2;

standoff_radius = holder_radius; // 0.580 / 2 inches from spec sheet
standoff_lower_portion_height = standoff_height - holder_height;

// eyeballed caster flange height, (0.580/5) inches, times 2 to be stronger
caster_flange_height = 5;
caster_flange_width = 20.32;  // 0.800 inches

deck_pitch = 25.4; // measured center to center on grid on pegboard
deck_flange_height = 2.9464;
deck_flange_screw_radius = 3.556 / 2;  // For #6 machine screws
deck_flange_radius = (deck_pitch) / 2 + deck_flange_screw_radius + 3;