No skill required – anyone can get great results! The optimum angle to sharpen a good quality steel knife is 20 degrees. AnySharp is pre-set at 20 degrees to give a perfect edge every time. Getting a consistent angle with a sharpening stone is a skilled job, but AnySharp allows anyone to get professional results without any training at all. Once you have fixed the AnySharp to a work surface, you can sharpen knives easily and safely using just one hand. All you need to do is just gently draw the blade through the tungsten carbide sharpening edges, 3 or 4 times to restore a super sharp cutting edge. Do remember, very little pressure is needed with AnySharp, and to wipe the knife before use.