Chucklehead answered this question about as well as it can be answered. More seriously, I wonder how many people still carry a small, pocket sized carborundum stone. About 25 years ago, I stopped by an old trapper's house one morning. He was just coming in with his catch. While we were talking, he pulled a small carborundum stone from his pocket and made a few passes on it with his knife (a Case Muskrat with CV blades-I remember because I bought one just like it a couple of weeks later.) He hung a 'coon up and took the hide off just like it had zippers. I can guarantee you this guy never heard of EdgePro's, Sharpmakers, or the like, but he had a sharp knife. The bevels were probably not perfect, or the edge the absolute best. But it was the right edge for what he was doing. Bet his big knifes were also sharpend on a carborundum bench stone or an old oil stone. I would imagine he paid about $.35 for the little pocket stone at the local feed store. Or they gave it to him. By the way, they are about three bucks now at the Home Depot. I have one I carry on my limited trips afield, and they still work. Vaquero