import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-6))
w1=cq.Workplane('XY',origin=(0,0,-26))
r=w0.sketch().arc((27,32),(31,33),(36,33)).arc((90,-9),(46,43)).segment((40,48)).close().assemble().finalize().extrude(32).union(w1.sketch().push([(-77,-27)]).circle(23).circle(22,mode='s').finalize().extrude(50))