import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,7,0))
w1=cq.Workplane('XY',origin=(0,0,-21))
r=w0.sketch().segment((-21,-48),(-4,-48)).segment((-1,-50)).segment((0,-48)).segment((2,-48)).segment((2,-46)).segment((21,-25)).segment((6,-10)).segment((-18,-35)).segment((-21,-35)).close().assemble().finalize().extrude(20).union(w1.sketch().segment((-21,10),(2,-20)).segment((2,-35)).segment((45,-35)).segment((45,-17)).arc((50,-14),(45,-12)).segment((45,-6)).segment((11,-6)).arc((10,2),(5,10)).segment((18,10)).segment((18,35)).segment((-21,35)).close().assemble().push([(24,-20)]).circle(14,mode='s').finalize().extrude(15))