Bought this a gift for my dad, and he has been kind enough to let me use it. This knife sharpener is great. Used to use a honing stone - results were excellent but very time consuming. This sharpens everything I have tried (pocket knife, kitchen knifes, outdoor knives) in a few minutes.It is true that a sharp knife is safer than a dull one, but only if you are expecting it! Warn your friends if they borrow your freshly sharpened knife!