| import cadquery as cq | |
| w0=cq.Workplane('YZ',origin=(-45,0,0)) | |
| r=w0.sketch().segment((-50,-5),(-19,-5)).arc((0,-20),(19,-5)).segment((50,-5)).segment((50,5)).segment((19,5)).arc((0,20),(-19,5)).segment((-50,5)).close().assemble().push([(-11,7)]).circle(4,mode='s').finalize().extrude(91) |