3-Stage Kitchen Knife Sharpener - Tungsten, Diamond & Ceramic Manual Knife Sharpener

A blunt knife is slow and, oddly, more dangerous than a sharp one: it slips off an onion or a tomato skin instead of cutting into it. Instead of waiting for the churri-wala or taking knives to the market, this sharpener restores the edge at home in under a minute.

It has three sharpening stages. Tungsten steel does the rough work on a very dull or neglected blade, diamond sets and refines the edge, and ceramic polishes it to a finished, smooth sharpness. For a knife that is only slightly dull, the fine ceramic stage alone is usually enough to bring it back.

Using it takes no skill. Stand it on the counter, hold the handle firmly with one hand, and with the other pull the knife through the slot towards you, from the heel of the blade to the tip, a few times. Pull in one direction only, rather than sawing back and forth. The V-shaped slots hold the blade at the right angle for you, and the long, rubber-grip handle keeps your hand well away from the edge.

Before sharpening, wipe any oil off the blade so it does not affect the result, and a knife with a large chip or notch should be repaired first. It is made for ordinary steel kitchen knives. As the instructions on the box say, it is not suitable for ceramic knives or scissors, and a pull-through sharpener like this should not be used on serrated bread knives.