screw_radius_measured = screw_diameter_measured / 2;
screw_radius_print_fudge = 0.3;
screw_radius = screw_radius_measured + screw_radius_print_fudge;
screw_radius_measured = screw_diameter_measured / 2;
screw_radius_print_fudge = 0.3;
screw_radius = screw_radius_measured + screw_radius_print_fudge;