Hi Jerry and welcome!
You are really one of a kind! I think you will find plenty of locations to film here since there is no rush toward modernity in Argentina, they rather save/paint the old stuff.
I think you should pay a visit to the Tigre/Nordelta area (car required) as I saw plenty of artisanal factories of furnitures and so you will likely find those making iron stuff and wooden stuff. I don't have a specific name but I am curious to see the outcome of your work!
In the meanwhile, you are welcome to join us at one of our Expats event. Check the dedicated forum section to know the next one!