But buying high end chef's knives is expensive. Consumer expert Amy Davis is testing the Bavarian Edge Knife Sharpener, whose makers claim it can make your old knives razor sharp in seconds.

The all-in-one Sharpal Knife Sharpener restores the edge of single beveled blades like pruners, loppers and mower blades. It ...

Sharpening is the practice of aggressively polishing a knife to reform its edge. You'll only need to do this for very dull knives. In the process, bits of metal are actually shaved away.