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import cadquery as cq
w0=cq.Workplane('YZ',origin=(76,0,0))
r=w0.workplane(offset=-152/2).moveTo(83,89).cylinder(152,11).union(w0.sketch().push([(-72,-78)]).circle(22).reset().face(w0.sketch().segment((-86,-83),(-76,-83)).segment((-67,-90)).segment((-64,-85)).arc((-52,-70),(-71,-72)).segment((-77,-67)).segment((-82,-74)).segment((-86,-74)).close().assemble(),mode='s').finalize().extrude(-65))