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import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-78,0))
w1=cq.Workplane('YZ',origin=(-31,0,0))
r=w0.workplane(offset=9/2).moveTo(12,0).cylinder(9,88).union(w0.sketch().push([(53,36)]).circle(18).reset().face(w0.sketch().segment((43,25),(60,23)).segment((63,46)).segment((47,48)).close().assemble(),mode='s').finalize().extrude(156)).union(w1.sketch().arc((-73,-100),(-70,-92),(-73,-85)).close().assemble().finalize().extrude(72))