MyChipCarving shows you in this how-to video how to sharpen a knife on ceramic sharpening stones. He shows two different stones used for sharpening. One being a medium grip ceramic stone showing you that you lift the knife at a ten degree angel and rub back and forth quickly. He then flips the knife and lifts it again ten degrees and again quickly rubs it on the stone. He then uses the polishes the knife on the white ceramic polishing stone. He goes on to show how to check if the blade is sharp by dragging it across his finger nail. He shows if it drags it's sharp, if it glides it's dull. After he is done he shows you how to clean the stone with Ajax cleaner and water.