I received an e-mail from them and it will cut stainless as well as metals with high chrome content. I also received some information about a similiar product they manufacture which cuts boiler tubes. This thing looks pretty slick. You just weld the track to the wall of tubes and it cuts through them with no hassle.

Will this thing cut stainless steel? I've got a big stainless steel tank that I have to cut a hole in and this thing sounds like it would be perfect for the task