import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-8))
r=w0.workplane(offset=3/2).moveTo(-36,3).cylinder(3,14).union(w0.sketch().arc((-9,2),(-30,-21),(-1,-12)).segment((50,-12)).segment((50,28)).segment((-9,28)).close().assemble().finalize().extrude(17))