I want to do some projects involving leaving metal bare. But, I do want to
heat it up to get some rainbow effects, as well as some other discoloration
techniques to get various effects.

Two questions ........ one, what can I use to discolor steel, both in
chemicals and heating effects, and ...... two, what type of a clearcoat do
I use to seal it against further rust or discoloration?

I'll have to repaint probably every two to three years, as there is a
sandblasting effect with local wind and sand.

Coloring and patination effects appreciated. Share your secrets.

Steve

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-Never underestimate the power of stupid people in large numbers.-