Try the sunchaser tools website,
www.sunchasertools.com There was also a metalshapers website about another guy who made a tool similar to this.I don't remember the addy but I think it was metalshapers.He also made one out of a stainless steel pan lid.
I haven't used one but have read many reviews about them and everyone seems to like them. Perhaps Metalman or Martinsr has used them.
