import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-14,0))
r=w0.workplane(offset=-4/2).moveTo(17.5,-27.5).box(27,45,4).union(w0.sketch().segment((-18,-36),(24,-45)).segment((24,-44)).arc((22,-34),(28,-25)).segment((29,-19)).arc((40,-4),(21,-5)).segment((17,-4)).segment((17,5)).segment((5,5)).segment((5,-1)).segment((-10,2)).close().assemble().push([(11,-5.5)]).rect(20,1,mode='s').finalize().extrude(26)).union(w0.sketch().segment((-1,10),(15,-1)).segment((20,6)).segment((4,17)).arc((-37,40),(-1,10)).assemble().finalize().extrude(33))