I have seen the commerical version of tools to deep bowl gouges. I have a book by Raffan that shows one made from wood. I have a metal shop plus my wood shop so I would like to build one. Has anyone done this and are there any pit falls? I am going to try to make a pictorial record if someone wants to see. I have some aluminum bars that should be perfect for the project. I have access to stainless steel rods (from a winery scrap yard) for the main gouge. Any comments?