import cadquery as cq
w0=cq.Workplane('YZ',origin=(40,0,0))
w1=cq.Workplane('ZX',origin=(0,-20,0))
r=w0.sketch().segment((-100,81),(-98,76)).segment((-83,82)).segment((-85,87)).close().assemble().finalize().extrude(-8).union(w1.workplane(offset=120/2).moveTo(-69.5,-6).box(35,68,120))