Ensure your blade stays sharp by investing in an easy-to-use hand-held sharpener. We tested simple pull-through gadgets to ...

and you'll still get a razor-sharp edge from a formerly blunt knife. Here are CNET's picks for the best knife sharpeners for your chef's knife. We're going to update it as we test more products.

KnifeAid is another sharpening service that will send your knives back razor-sharp. You'll pay about $13 per knife, but you must send a minimum of four knives to be sharpened. Some local grocery ...