I'm making some window awnings out of S corrugated steel. The steel is heavy gauge, and to me looks like Corten, or similar, made to rust. I want the finished article to have a rusty patinated look.
The sheets have been stacked. The top one is perfectly and evenly patinated. The ones underneath have patterns where the water has ran into them and rusted them, and other areas of where the fishoil is still there.
How would you get them to rust fast and evenly?
I thought of laying them out, cutting them to length, scrubbing them with some solvent remover and sand mixed together, rinsing, then spray with a light mix of muriatic acid. Then rinsing and repeating.
Ideas appreciated if you've worked with this stuff.
Steve
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