import cadquery as cq
w0=cq.Workplane('YZ',origin=(18,0,0))
w1=cq.Workplane('XY',origin=(0,0,50))
r=w0.sketch().segment((-32,-40),(7,-50)).segment((13,-26)).arc((30,11),(-8,-2)).segment((-22,1)).close().assemble().reset().face(w0.sketch().segment((-8,-2),(18,-9)).segment((13,-26)).arc((30,11),(-8,-2)).assemble(),mode='s').finalize().extrude(-36).union(w1.workplane(offset=-67/2).moveTo(0,1).box(74,62,67))