| import cadquery as cq | |
| w0=cq.Workplane('XY',origin=(0,0,-42)) | |
| r=w0.sketch().arc((-4,42),(-6,-50),(4,42)).segment((4,50)).segment((-4,50)).close().assemble().reset().face(w0.sketch().segment((-4,-8),(-4,32)).arc((-21,12),(-4,-8)).assemble(),mode='s').reset().face(w0.sketch().arc((4,-8),(21,12),(4,32)).close().assemble(),mode='s').finalize().extrude(85) |