import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-31,0))
r=w0.sketch().arc((38,10),(22,-8),(45,-2)).arc((49,9),(38,10)).assemble().finalize().extrude(29).union(w0.workplane(offset=62/2).moveTo(-46.5,0).box(7,30,62))