This video shows you how to sharpen a jack knife or wood-carving knife using coarse, medium, and fine stones and cooking oil. Use the coarse stone, applying oil to the stone first then pushing the knife down on the stone in each direction, matching the bevel to the stone. Next is the medium stone. Add oil before continuing the sharpening process. Apply cooking oil to the fine stone and finish the sharpening process. Using a leather strop will remove any burrs and polish the knife.