import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-22,0))
w1=cq.Workplane('YZ',origin=(-20,0,0))
r=w0.sketch().arc((-50,23),(-41,17),(-41,7)).segment((-20,-14)).segment((-36,-31)).segment((-28,-33)).segment((-28,-27)).segment((-23,-27)).segment((-23,-34)).segment((-14,-37)).segment((-1,11)).segment((-50,25)).close().assemble().push([(26,13)]).circle(24).circle(12,mode='s').finalize().extrude(6).union(w1.workplane(offset=26/2).moveTo(21,12).box(2,2,26))