import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-15,0))
r=w0.sketch().segment((36,34),(43,47)).arc((38,42),(36,34)).assemble().finalize().extrude(-35).union(w0.sketch().push([(-13,-22)]).rect(46,50).push([(-26.5,-15)]).rect(3,2,mode='s').finalize().extrude(-22)).union(w0.workplane(offset=65/2).moveTo(-12.5,-22).box(61,8,65))