import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-49))
r=w0.sketch().arc((-74,-64),(-61,-70),(-46,-70)).segment((-54,-70)).segment((-54,-67)).segment((-54,-65)).segment((-54,-64)).close().assemble().reset().face(w0.sketch().segment((-74,-12),(-33,-12)).arc((-53,-5),(-74,-12)).assemble()).finalize().extrude(61).union(w0.sketch().segment((-100,33),(-23,30)).arc((6,-28),(69,-14)).segment((86,-20)).segment((100,21)).segment((80,28)).arc((41,70),(-12,51)).segment((-99,54)).close().assemble().reset().face(w0.sketch().segment((43,-8),(50,-7)).segment((43,-5)).close().assemble(),mode='s').reset().face(w0.sketch().segment((50,38),(57,36)).segment((57,39)).close().assemble(),mode='s').finalize().extrude(98))