Welding polished stainless steel often causes a particular type of "rainbow" discoloration. This month's column tells you how to remove this coloring. I am making a stainless exhaust system and I'm ...

The exhaust system on your motorcycle takes one hell of a beating. Rust, dents, scratches, and general weathering will leave it looking like scrap. However, if your exhaust is made of stainless steel, ...