import cadquery as cq
w0=cq.Workplane('YZ',origin=(-12,0,0))
w1=cq.Workplane('XY',origin=(0,0,38))
r=w0.sketch().segment((-37,-38),(-6,-38)).segment((-6,-33)).arc((15,-14),(14,14)).segment((17,14)).segment((17,23)).segment((8,23)).arc((0,29),(-9,32)).segment((-9,35)).segment((-23,35)).segment((-23,32)).arc((-49,7),(-37,-27)).close().assemble().finalize().extrude(-2).union(w1.workplane(offset=-12/2).moveTo(0,18).cylinder(12,32))