| import cadquery as cq | |
| w0=cq.Workplane('ZX',origin=(0,-1,0)) | |
| r=w0.workplane(offset=-7/2).moveTo(30,2).cylinder(7,20).union(w0.sketch().segment((-50,-17),(-27,-22)).arc((-24,-18),(-20,-15)).segment((-15,5)).segment((-43,12)).close().assemble().finalize().extrude(9)) |