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Duplicate from filapro/cad-recode-v1.5
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import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,9))
r=w0.workplane(offset=-23/2).moveTo(38,-31).cylinder(23,18).union(w0.sketch().push([(-59,8)]).circle(41).push([(59,-4)]).circle(41).reset().face(w0.sketch().segment((51,2),(56,-15)).segment((68,-11)).segment((63,6)).close().assemble(),mode='s').finalize().extrude(5))