import cadquery as cq
w0=cq.Workplane('YZ',origin=(18,0,0))
w1=cq.Workplane('XY',origin=(0,0,-9))
r=w0.sketch().segment((36,-7),(36,1)).arc((29,-3),(36,-7)).assemble().finalize().extrude(32).union(w1.sketch().push([(-37,-20)]).rect(26,32).push([(-41,-31)]).circle(5,mode='s').push([(-26,-30)]).circle(1,mode='s').finalize().extrude(18))