import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,17))
w1=cq.Workplane('YZ',origin=(-100,0,0))
r=w0.workplane(offset=-103/2).moveTo(-45,-70).cylinder(103,27).union(w0.workplane(offset=69/2).moveTo(48,28).cylinder(69,52)).union(w1.sketch().arc((76,7),(-7,-28),(77,6)).segment((97,6)).segment((97,7)).close().assemble().finalize().extrude(123))