import cadquery as cq
w0=cq.Workplane('YZ',origin=(-15,0,0))
r=w0.workplane(offset=-4/2).moveTo(15,88).box(148,24,4).union(w0.sketch().segment((-89,-45),(-73,-100)).segment((20,-74)).segment((4,-19)).close().assemble().finalize().extrude(35))