Here is a video of a demonstration my brother did on sharpening chisels. It goes over using stones and tips on sharpening both straight and gouge style chisels. He goes over how to do it with with and without a griding wheel. My brother's knowledge comes from restoring 18th and 19th century antiques with my father and a group of amazing craftsmen from around the world. He goes over low cost old school methods and some of the pros and cons of grinding wheels, clamps, stones, and polishing compounds.