All of the above. That is what I was hinting at. It is hardly worth the shipping costs to just do a penetrator. Now reprofiling and polishing an edge takes some pratice. I have plenty of my earlier imperfect projects lying around. The knives still cut better than they did, but they are not as pretty as the work I can do now. I would recommend a belt sander to anyone who uses machetes, axes, or large knives. I can't believe I waited until I was this old to discover how useful they are.