// -*- C -*- rod_dia = 8+2; thick = 8; screw_dia = 3.5 + 0.75; screw_head_dia = 8.2 + 1.0; rod_offset = 14 + 2; width = 40; module C() { circle(r = rod_dia/2, $fn=20); } module Profile() { d = rod_dia/2 + thick/2; hull(){ translate([-d, 0]) C(); translate([-d,-d]) C(); } } Profile();