import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-13,0))
r=w0.sketch().push([(-11.5,-41)]).rect(39,18).push([(1,-46)]).circle(4,mode='s').finalize().extrude(-18).union(w0.sketch().segment((2,29),(12,20)).segment((31,41)).segment((22,50)).close().assemble().finalize().extrude(44))