Hello group. Just found the site today and signed up. I've been a union sheet metal worker for 33 years now and I'm still learning new skills all the time. The past six years or so I've worked for a commercial kitchen contractor. We install all kinds of stainless steel sheet metal items. One of my specialties is welding/grinding/polishing stainless work tables and sinks. The picture below is me welding on a custom "L" shaped sink and work counter. The project is a horse racing track near Detroit, Michigan. After the pieces were welded together I polished it all back to a #3 finish which has a smooth brushed look. I like working with copper, too. I'll post a pic or two in the future.