| import cadquery as cq | |
| w0=cq.Workplane('XY',origin=(0,0,27)) | |
| r=w0.sketch().segment((-50,-5),(-23,-5)).arc((0,-24),(23,-5)).segment((50,-5)).segment((50,5)).segment((23,5)).arc((0,24),(-23,5)).segment((-50,5)).close().assemble().finalize().extrude(-55) |