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I read that if you work cut stainless with tools - wire brushes, files, saws etc that been used to cut carbon steel, the stainless will rust.
What i currently do is plasma cut the plaque from brushed stainless 1.2mm sheet, clean up edges on the belt sander (used for carbon steel too), hit the back side (unseen when fitted) with a cup brush (used on carbon steel) which gets rid of any dross, then hit the front with a rotary flap drum (not used for steel) and finish with a final working with scotchbrite - the front working is always done in line with the brushing.
When working the front i work on a clean wood pad so no crud is dragged up from the steel bench.
What i am slightly concerned about is rusting - people tend to view stainless as rustless so although i have not had a complaint yet, i also don't want any in the future.
I have also read that if the stainless is brushed up clean it will re-passivate and not rust or i could soak in Nitric but i really don't want to go there if possible.
Any thoughts???