| import cadquery as cq | |
| w0=cq.Workplane('XY',origin=(0,0,-42)) | |
| r=w0.sketch().segment((-20,20),(-11,20)).arc((0,23),(11,20)).segment((20,20)).arc((0,28),(-20,20)).assemble().finalize().extrude(52).union(w0.sketch().circle(50).reset().face(w0.sketch().segment((-40,-14),(-20,-14)).arc((0,-25),(20,-14)).segment((40,-14)).segment((40,14)).segment((20,14)).arc((0,25),(-20,14)).segment((-40,14)).close().assemble(),mode='s').finalize().extrude(85)) |