KB_HOLE_SPACING = 8.0;
KB_HOLE_INSIDE_DIAMETER = 5.0;
KB_STUD_DIAMETER = 4.8;
KB_HOLE_RING_DIAMETER = 6.25;
KB_HOLE_RING_DEPTH = 0.9;
KB_BEAM_WIDTH = 7.6;
KB_AXLE_GAP = 1.95;
KB_AXLE_LENGTH = 5.1;
KB_MOUSE_EARS = false;

KB_BEAM_HEIGHT = 7.8;
KB_THIN_BEAM_HEIGHT = KB_BEAM_HEIGHT/3;