import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,80,0))
r=w0.sketch().segment((-100,8),(-56,-7)).arc((-23,-70),(47,-80)).arc((65,-41),(99,-17)).arc((67,58),(-14,63)).segment((-74,84)).close().assemble().finalize().extrude(-161)