Originally Posted by beneteau-500
having worked in the gas industry for yrs after we either cut or welded stainless steel
we always pickled and pasted it then polished it and it never discoloured or rusted
Yes!!!! If it's going to be welded/heated or machined at all it'll need to be pickled/passivated. Using a steel
wire brush will cause stains to form and even polishing. Passivating eats the iron from the surface, which protects the under metal. "But rust never sleeps" so after a couple or more years a hand polish with a SS polish will keep it shinny.
Rick posted this trick
a few years ago.... Electro-cleaning stainless steel