import cadquery as cq
w0=cq.Workplane('YZ',origin=(32,0,0))
r=w0.sketch().arc((12,-23),(16,-17),(22,-12)).arc((-18,13),(12,-23)).assemble().reset().face(w0.sketch().segment((-21,48),(-13,48)).arc((-17,50),(-21,48)).assemble()).finalize().extrude(-65).union(w0.workplane(offset=-41/2).moveTo(-9,-38).cylinder(41,12))