import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-5,0))
r=w0.sketch().segment((-12,18),(-12,44)).arc((-36,17),(-6,-4)).segment((-6,-3)).segment((-2,-3)).arc((9,5),(13,18)).segment((10,18)).arc((0,4),(-9,18)).close().assemble().finalize().extrude(-45).union(w0.sketch().segment((-10,-26),(-3,-26)).arc((13,-44),(29,-26)).segment((31,-26)).segment((31,-18)).segment((36,-18)).segment((36,2)).arc((10,-7),(-3,18)).segment((-5,18)).segment((-5,0)).segment((-10,0)).segment((-10,-15)).close().assemble().finalize().extrude(55))