import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-28,0))
r=w0.sketch().segment((55,-96),(100,-96)).segment((75,-46)).segment((55,-46)).close().assemble().finalize().extrude(39).union(w0.sketch().arc((-100,77),(-86,74),(-75,65)).segment((-75,64)).arc((-71,52),(-74,39)).arc((-67,51),(-67,64)).segment((71,64)).segment((71,96)).segment((-75,96)).segment((-75,75)).arc((-87,79),(-100,77)).assemble().finalize().extrude(56))