A: sphere_diameter: 10.2; knob_diameter=4.9; //knobs on top of blocks knob_height=1.6; knob_spacing=8.0; wall_thickness=1.45; roof_thickness=1.05; block_height=9.5; pin_diameter=3; //pin for bottom blocks with width or length of 1 post_diameter=6.4; reinforcing_width=1.5; axle_spline_width=2.0; axle_diameter=5; cylinder_precision=0.5;