import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,41,0))
w1=cq.Workplane('YZ',origin=(-54,0,0))
r=w0.workplane(offset=3/2).moveTo(-56,49.5).box(88,9,3).union(w1.workplane(offset=21/2).moveTo(-37,93).cylinder(21,7))