import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,24))
r=w0.workplane(offset=-48/2).moveTo(-28.5,0).box(143,142,48).union(w0.sketch().push([(0,54)]).circle(7).push([(93,3)]).circle(7).finalize().extrude(-14))