import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-12,0))
r=w0.sketch().push([(-22.5,7.5)]).rect(47,41).reset().face(w0.sketch().segment((-24,22),(-21,16)).segment((-15,19)).segment((-17,25)).close().assemble(),mode='s').finalize().extrude(-7).union(w0.sketch().push([(-37,2)]).circle(13).push([(2,18.5)]).rect(48,37).push([(2,19)]).circle(10,mode='s').reset().face(w0.sketch().segment((18,-19),(37,-37)).segment((50,-24)).segment((31,-6)).close().assemble()).finalize().extrude(32))