I am always amazed at the metal relief work done by our ancestors, not only by the volume, but the variety in execution.
Steel furniture was sculpted directly, but how much of the brass and silver furniture had cast-in relief? Or cast, then detailed? It is much easier to work clay or plaster, than metal.
For a one-of-a-kind project, I assume it's most effective to cut directly in metal.
Good work, Jim. It's inspiring to see your work going through its phases.