import cadquery as cq
w0=cq.Workplane('YZ',origin=(13,0,0))
w1=cq.Workplane('YZ',origin=(6,0,0))
r=w0.sketch().arc((-37,-8),(-39,-32),(-16,-41)).segment((-16,-50)).segment((26,-50)).segment((26,-6)).segment((1,-6)).arc((-1,3),(-3,-6)).segment((-11,-6)).arc((-25,2),(-37,-8)).assemble().finalize().extrude(-41).union(w0.workplane(offset=15/2).moveTo(31,39).cylinder(15,11)).union(w1.sketch().push([(-1,-1)]).circle(17).circle(13,mode='s').finalize().extrude(-1))