import cadquery as cq
w0=cq.Workplane('YZ',origin=(11,0,0))
w1=cq.Workplane('YZ',origin=(22,0,0))
r=w0.sketch().segment((10,-13),(12,-13)).segment((12,-16)).segment((30,-16)).segment((30,15)).segment((12,15)).segment((12,10)).segment((10,10)).close().assemble().push([(23,-0.5)]).rect(12,19,mode='s').finalize().extrude(-60).union(w0.sketch().push([(21,0)]).circle(29).push([(21.5,-0.5)]).rect(43,25,mode='s').finalize().extrude(-5)).union(w1.sketch().segment((-40,-26),(-15,-26)).segment((-15,-17)).arc((-14,-16),(-13,-14)).segment((18,-14)).segment((18,21)).segment((-15,21)).segment((-15,29)).segment((-40,29)).segment((-40,20)).arc((-50,2),(-40,-17)).close().assemble().finalize().extrude(27))