import cadquery as cq
w0=cq.Workplane('YZ',origin=(19,0,0))
r=w0.sketch().push([(-42.5,0)]).rect(15,38).push([(3,0)]).circle(18).reset().face(w0.sketch().segment((26,-11),(45,-17)).segment((50,-2)).segment((44,0)).segment((29,0)).segment((29,2)).close().assemble()).finalize().extrude(-38)