import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,44,0))
r=w0.workplane(offset=-89/2).moveTo(-7,-28).cylinder(89,22).union(w0.sketch().push([(24.5,24)]).rect(9,52).push([(25,24)]).circle(2,mode='s').finalize().extrude(-21))