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import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,36))
w1=cq.Workplane('XY',origin=(0,0,43))
r=w0.workplane(offset=-78/2).moveTo(-65,47).cylinder(78,35).union(w0.sketch().segment((1,-63),(30,-63)).arc((39,-76),(54,-82)).arc((41,-56),(50,-28)).arc((48,-28),(47,-29)).segment((47,-12)).arc((57,-15),(67,-16)).arc((72,-15),(76,-14)).arc((80,52),(30,8)).segment((1,8)).close().assemble().finalize().extrude(-75)).union(w1.sketch().segment((41,-16),(91,-16)).segment((91,43)).segment((46,43)).segment((46,50)).segment((51,50)).arc((-21,30),(41,-11)).close().assemble().push([(19,24)]).circle(19,mode='s').finalize().extrude(-67))