import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-27,0))
r=w0.workplane(offset=18/2).moveTo(-37,-28).box(26,10,18).union(w0.sketch().segment((-2,-7),(5,-7)).segment((20,9)).segment((39,-7)).segment((50,-7)).segment((50,23)).segment((36,23)).segment((30,33)).segment((13,23)).segment((-2,23)).close().assemble().finalize().extrude(55))