4-in-1 Knife Sharpener, Diamond & Ceramic Kitchen Tool

A blunt knife is more dangerous than a sharp one, because it slips instead of cutting and it needs force to do a job that should take none. Most households own knives that have never been sharpened once, and the reason is almost always that a whetstone looks like a skill you have to learn.

This is the version that requires no skill. Four stages in sequence: a diamond stage to reset a badly damaged edge, tungsten steel to set the angle, ceramic to hone and polish it, and a dedicated slot that handles serrated blades, which most pull-through sharpeners simply cannot touch. Scissors get their own guide as well. Each stage holds the correct angle for you, so you draw the blade through rather than judging anything by eye.

Non-slip base to hold it steady on a bench, and a handle to keep your hand away from the blade path. Two models available. A few passes every couple of weeks keeps a kitchen knife genuinely sharp rather than nominally so. Keep it out of reach of children, and always draw the blade away from your body.

• Stages: diamond, tungsten steel, ceramic, plus a serrated slot
• Also sharpens: kitchen scissors
• Angle: held automatically by each stage
• Base: non-slip, with a safety handle
• Models: TG2016 and TG2017
• Safety: keep from children, always draw the blade away from you