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import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-3,0))
r=w0.workplane(offset=-97/2).moveTo(34,25).cylinder(97,25).union(w0.sketch().segment((-76,-67),(-36,-67)).segment((-36,18)).arc((-19,1),(-13,-22)).arc((-4,-14),(2,-4)).arc((75,35),(-7,35)).arc((-35,43),(-59,28)).segment((-76,28)).close().assemble().finalize().extrude(103))