It may seem like a contradiction, but sharp knives are the safest. With a clean edge, a knife is more predicable and easier to control. If you've purchased a top-of-the-line knife, maintaining the quality of the blade ensures maximum value from your investment. This Chef's Choice knife sharpener performs professional-quality sharpening on any knife, from gourmet knives to hunting knives even the tips of serrated knives can be improved with this machine (for a complete sharpening of serrated knives, however, Chef's Choice recommends models 120 and 320). For top-quality edges, there are two sharpening and honing stages, which use 100% diamond abrasives, and a final polishing stage. Each stage uses precision angle guides to create a unique "Trizor-Plus" edge for maximum sharpness and durability, while a magnetic pad collects residue so the machine is easy to clean and maintain. While a sharp knife is indeed a safe knife, it's wise to use caution with your newly sharpened knives, as they'll be sharper than you expect.