import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,7,0))
w1=cq.Workplane('YZ',origin=(2,0,0))
r=w0.sketch().arc((-11,-27),(-14,-30),(-10,-32)).arc((26,-38),(-10,-30)).close().assemble().push([(7.5,-34.5)]).rect(15,3,mode='s').finalize().extrude(-9).union(w0.sketch().segment((21,-27),(36,-27)).segment((36,-5)).segment((21,-5)).segment((21,-15)).close().assemble().finalize().extrude(1)).union(w1.sketch().push([(0,-21)]).circle(15).circle(7,mode='s').finalize().extrude(48))