I realize you are looking for technical solutions, but I would encourage you
to contact the Wagner Foundry in Chicago. I believe the man to speak with is
Rick Wagner. They have recast every conceivable piece of decorative ironwork
for Chicago restorations over the last 30 years. I am almost sure they cast
some elements for Sullivan's Carson Pirie Scott department store. They are
extremely able. Would you ever sub it out?
Anne Sullivan, Chicago