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import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,70))
r=w0.sketch().push([(55,-34)]).circle(18).reset().face(w0.sketch().segment((40,-26),(66,-48)).segment((71,-43)).segment((44,-21)).close().assemble(),mode='s').finalize().extrude(-158).union(w0.sketch().push([(-43,22)]).circle(57).push([(55,-34)]).circle(45).circle(2,mode='s').finalize().extrude(-141))