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import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-71,0))
r=w0.sketch().segment((-100,63),(-89,63)).segment((-89,40)).segment((18,40)).segment((18,63)).segment((29,63)).segment((29,68)).segment((18,68)).segment((18,91)).segment((-89,91)).segment((-89,68)).segment((-100,68)).close().assemble().push([(67,-58)]).circle(33).circle(18,mode='s').finalize().extrude(143)