| import cadquery as cq | |
| w0=cq.Workplane('YZ',origin=(-9,0,0)) | |
| r=w0.sketch().segment((-18,49),(-12,32)).arc((-33,-11),(10,-33)).segment((16,-50)).segment((18,-49)).segment((12,-32)).arc((33,11),(-10,33)).segment((-16,50)).close().assemble().finalize().extrude(18) |