import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,22,0))
r=w0.sketch().push([(46,-10)]).circle(4).push([(46,-11)]).circle(1,mode='s').finalize().extrude(-44).union(w0.sketch().arc((-33,9),(-48,-10),(-24,-8)).arc((-11,10),(-33,9)).assemble().finalize().extrude(-42))