import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,27))
r=w0.sketch().arc((-50,-14),(-35,-23),(-25,-38)).arc((-15,-34),(-8,-25)).segment((23,-34)).segment((41,26)).segment((2,38)).segment((-11,-4)).arc((-34,4),(-50,-14)).assemble().push([(12,2)]).circle(20,mode='s').finalize().extrude(-55).union(w0.sketch().segment((-26,-8),(40,-26)).segment((41,-21)).arc((35,-11),(45,-5)).segment((50,13)).segment((-15,30)).close().assemble().push([(12,2)]).circle(18,mode='s').finalize().extrude(-39))