import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,28))
r=w0.sketch().segment((-42,-38),(13,-38)).segment((13,-50)).segment((42,-50)).segment((42,5)).segment((14,5)).segment((14,17)).segment((-42,17)).close().assemble().reset().face(w0.sketch().arc((-22,-12),(-31,-17),(-21,-15)).arc((-6,-8),(-22,-12)).assemble(),mode='s').finalize().extrude(-57).union(w0.workplane(offset=-22/2).moveTo(1,38).cylinder(22,12))