import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,28,0))
w1=cq.Workplane('YZ',origin=(7,0,0))
r=w0.sketch().arc((-55,-85),(-24,-87),(-55,-83)).segment((-54,-83)).segment((-54,-85)).close().assemble().push([(-40,-85)]).circle(10,mode='s').finalize().extrude(-6).union(w0.sketch().push([(-47,60)]).circle(40).rect(78,4,mode='s').finalize().extrude(-2)).union(w1.sketch().segment((-57,32),(-52,32)).arc((-44,9),(-28,-10)).segment((7,-10)).segment((7,-17)).arc((38,-1),(52,32)).segment((57,32)).segment((57,38)).segment((52,38)).arc((0,87),(-52,38)).segment((-57,38)).close().assemble().finalize().extrude(36))