| import cadquery as cq | |
| w0=cq.Workplane('XY',origin=(0,0,-18)) | |
| r=w0.sketch().circle(50).reset().face(w0.sketch().segment((-42,-16),(-21,-16)).arc((-27,0),(-21,16)).segment((-42,16)).close().assemble(),mode='s').reset().face(w0.sketch().segment((21,-16),(42,-16)).segment((42,16)).segment((21,16)).arc((27,0),(21,-16)).assemble(),mode='s').finalize().extrude(36) |