I used to demo mid 1800's woodworking, but Icannot stand for very long anymore, so my youngest daughters husband now has the shop andis going to do the demoing. people always wanted to know how I kept my planes and chisels so sharp and I showed them a piece of smooth scrap with some of that diamond impregnated sticky back film on it. A couple of swipes on the 12 micron and same on the 5 micron film and its honed till next time, but be careful because it cuts quick.