import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,37,0))
r=w0.workplane(offset=-86/2).moveTo(-11,11).cylinder(86,20).union(w0.sketch().segment((-65,72),(-49,72)).segment((-49,100)).segment((-65,100)).arc((-63,86),(-65,72)).assemble().finalize().extrude(-7)).union(w0.sketch().segment((-55,-79),(-40,-79)).arc((-33,-83),(-25,-84)).segment((-25,-100)).segment((65,-100)).segment((65,-46)).segment((7,-46)).segment((7,-35)).segment((0,-35)).segment((-4,-44)).segment((-8,-42)).segment((-5,-35)).segment((-8,-35)).arc((-24,-30),(-40,-35)).segment((-55,-35)).close().assemble().finalize().extrude(12))