If you are needing to "sharpen" your survival skills, here is video to watch to get you going in the right direction. This video stresses the importance of a sharp knife. It starts off with what kind of wet stone to use and what to use to get a shine on your knife. Learn what to look for before you start to sharpen and what to keep an eye out for after you have started the sharpening process. Also learn how to remove burs and a couple of alternatives in what you can use to do that.