import cadquery as cq
w0=cq.Workplane('YZ',origin=(-72,0,0))
w1=cq.Workplane('XY',origin=(0,0,46))
r=w0.workplane(offset=47/2).moveTo(24.5,65.5).box(55,37,47).union(w0.sketch().arc((-62,-6),(-74,-82),(-36,-15)).arc((-32,38),(-62,-6)).assemble().finalize().extrude(63)).union(w1.sketch().push([(27,51)]).rect(90,98).circle(19,mode='s').finalize().extrude(35))