import cadquery as cq
w0=cq.Workplane('YZ',origin=(-12,0,0))
r=w0.workplane(offset=-38/2).moveTo(0,-14).cylinder(38,35).union(w0.sketch().arc((-29,30),(-28,29),(-27,27)).segment((-19,33)).arc((-14,33),(-12,37)).segment((1,46)).segment((-1,49)).segment((-14,40)).arc((-19,40),(-21,35)).close().assemble().finalize().extrude(62))