import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,41))
r=w0.workplane(offset=-138/2).moveTo(37,-33).cylinder(138,7).union(w0.sketch().push([(-95,66.5)]).rect(10,59).push([(-95,67)]).circle(5,mode='s').finalize().extrude(36)).union(w0.workplane(offset=56/2).moveTo(37,-33).cylinder(56,63))