rust patina wanted for sheet metal

plateaugalMay 28, 2009

I want to fabricate an architecturally pleasing box out of sheet metal to hide an exterior metal smokestack. I want to add some interesting details and then mask the fact that it is made of sheet metal somehow. It is 25 feet up, so no one will look closely. Is there a chemical I can use to create a natural rust patina?

Jenny

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alphonse

As a general rule, it's better to use the material you want to look at vs.trying to modify the pig's ear.
Given the latter, what metal are you hoping to patinate?

    Bookmark   May 29, 2009 at 8:01AM
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plateaugal

I have not purchased the metal yet. I want the look in this photo. Any suggestions?

Here is a link that might be useful: Chimney Cover

    Bookmark   May 30, 2009 at 11:14AM
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alphonse

The best material would be Cor-Ten steel, which develops a coating of rust which becomes passive. Originally developed as a structural steel that would not require sandblasting/painting. May be difficult to obtain in small amounts.
Patina on virtually any other metal will require coating of some sort to maintain a steady state, and the coating is subject to breakdown.
What about plaster, concrete or ceramic molds/applique?

    Bookmark   May 31, 2009 at 6:28AM
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plateaugal

That is just the product I was hoping to find. With the right words "Cor-Ten steel" I was able to find chat rooms and suppliers.

Thank you so much Alphonse!

    Bookmark   May 31, 2009 at 1:23PM
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alphonse

You're welcome. Maybe post a pic when you're done.

    Bookmark   May 31, 2009 at 2:50PM
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