import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,3,0))
w1=cq.Workplane('YZ',origin=(-30,0,0))
r=w0.sketch().push([(-21.5,40)]).rect(49,20).push([(28,-18)]).circle(9).finalize().extrude(26).union(w0.workplane(offset=42/2).moveTo(24,-28).cylinder(42,22)).union(w1.sketch().segment((-45,-25),(7,-25)).segment((7,18)).segment((-13,18)).arc((-11,12),(-11,5)).arc((-13,-14),(-31,-5)).arc((-41,4),(-40,18)).segment((-45,18)).close().assemble().finalize().extrude(22))