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import cadquery as cq
w0=cq.Workplane('YZ',origin=(0,0,0))
r=w0.workplane(offset=-87/2).moveTo(-30,10).cylinder(87,37).union(w0.sketch().segment((-100,-34),(-64,-34)).segment((-68,-43)).segment((-59,-47)).segment((-54,-34)).segment((-6,-34)).segment((-6,-5)).segment((-22,-5)).arc((-23,27),(-47,6)).segment((-52,-5)).segment((-100,-5)).close().assemble().push([(-53,-19)]).circle(4,mode='s').reset().face(w0.sketch().segment((-41,-5),(-38,-5)).arc((-39,-4),(-41,-3)).close().assemble(),mode='s').push([(-16,14)]).circle(1,mode='s').finalize().extrude(73)).union(w0.sketch().push([(-30,10)]).circle(3).push([(62,2)]).circle(38).finalize().extrude(88))