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import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-10))
r=w0.sketch().segment((-8,-11),(25,-34)).arc((33,-60),(61,-59)).segment((94,-82)).segment((100,-72)).segment((67,-50)).arc((59,-23),(31,-25)).segment((-1,-2)).close().assemble().finalize().extrude(-29).union(w0.sketch().segment((-100,77),(-98,75)).segment((-96,82)).close().assemble().finalize().extrude(50))