import cadquery as cq
w0=cq.Workplane('YZ',origin=(45,0,0))
w1=cq.Workplane('XY',origin=(0,0,36))
r=w0.sketch().push([(7,14)]).circle(6).push([(4,12)]).circle(2,mode='s').finalize().extrude(-90).union(w0.workplane(offset=-84/2).moveTo(-18.5,-26).box(49,48,84)).union(w0.sketch().push([(7,14)]).circle(36).push([(29,11)]).circle(11,mode='s').finalize().extrude(-65)).union(w1.sketch().push([(26,7)]).circle(8).push([(21,8)]).circle(2,mode='s').finalize().extrude(-71))