import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-34,0))
r=w0.sketch().segment((38,-5),(42,-5)).segment((42,-7)).segment((44,-7)).segment((44,-39)).segment((75,-39)).segment((75,-7)).segment((96,-7)).segment((96,-5)).segment((100,-5)).segment((100,36)).segment((96,36)).segment((96,38)).segment((42,38)).segment((42,36)).segment((38,36)).close().assemble().finalize().extrude(1).union(w0.workplane(offset=67/2).moveTo(-75,33).box(50,12,67))