import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,7))
r=w0.sketch().circle(42).push([(-39,-0.5)]).rect(4,5,mode='s').finalize().extrude(-107).union(w0.sketch().circle(22).push([(-15,-9)]).circle(4,mode='s').finalize().extrude(93))