I had a steel shelf made to go over my stainless-steel stove. The shelf is not stainless, just plain steel, and it has bright, shiny spots where the parts have been welded (soldered?) together. I understand that the steel will rust with time if it's not sealed. I want to make the shiny spots the same color as the rest (dull grey) and then finish the whole thing so it won't rust. I'm no expert. Any advice?
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