import cadquery as cq
w0=cq.Workplane('YZ',origin=(5,0,0))
r=w0.sketch().segment((-50,-1),(-27,-1)).segment((-25,-20)).segment((21,-16)).segment((20,-1)).segment((40,-1)).segment((40,27)).segment((17,27)).segment((15,46)).segment((-31,41)).segment((-30,27)).segment((-50,27)).close().assemble().push([(31,3)]).circle(3,mode='s').finalize().extrude(-11).union(w0.sketch().segment((14,-39),(23,-39)).arc((32,-46),(42,-39)).segment((50,-39)).segment((50,-33)).segment((42,-33)).arc((32,-26),(23,-33)).segment((14,-33)).close().assemble().finalize().extrude(-2))