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import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-20))
r=w0.workplane(offset=-69/2).moveTo(15,0).cylinder(69,85).union(w0.workplane(offset=26/2).moveTo(-39,15).box(122,62,26)).union(w0.sketch().segment((58,-18),(71,22)).arc((62,29),(60,40)).segment((58,41)).close().assemble().finalize().extrude(109))