import cadquery as cq
w0=cq.Workplane('YZ',origin=(18,0,0))
r=w0.workplane(offset=-36/2).moveTo(95,42).cylinder(36,5).union(w0.sketch().segment((-100,-28),(-75,-74)).segment((-21,-45)).segment((-46,1)).close().assemble().reset().face(w0.sketch().segment((15,-32),(18,-32)).segment((18,10)).arc((59,65),(15,12)).close().assemble()).finalize().extrude(-25))