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import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,49))
r=w0.workplane(offset=-98/2).moveTo(-18,68).cylinder(98,32).union(w0.sketch().segment((-46,-100),(-36,-100)).segment((-36,-47)).segment((50,-47)).segment((50,59)).segment((-40,59)).segment((-40,7)).segment((-46,7)).close().assemble().finalize().extrude(-86))