import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,45,0))
r=w0.sketch().segment((-86,49),(-86,56)).arc((-16,19),(-85,57)).segment((-83,57)).segment((-83,49)).close().assemble().finalize().extrude(-145).union(w0.sketch().push([(38,-32.5)]).rect(120,73).push([(47.5,-21)]).rect(11,36,mode='s').finalize().extrude(55))