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import cadquery as cq
w0=cq.Workplane('YZ',origin=(-73,0,0))
r=w0.sketch().arc((-69,-27),(58,-39),(-7,72)).segment((4,63)).segment((13,63)).segment((13,56)).segment((20,50)).segment((13,41)).segment((13,37)).segment((9,37)).segment((-2,23)).segment((-6,26)).arc((-18,-23),(-69,-27)).assemble().reset().face(w0.sketch().arc((-52,53),(-42,53),(-33,51)).segment((-28,58)).segment((-28,63)).segment((-24,63)).segment((-18,70)).arc((-36,64),(-52,53)).assemble()).finalize().extrude(-27).union(w0.workplane(offset=173/2).moveTo(-18,46).cylinder(173,10))