To sharpen a knife using a hand-held sharpener, simply drag the knife through the notch, pulling gently towards you with light pressure – even the weight of the blade should be enough. WÜSTHOF offers hand-held knife sharpeners that have two stages: fine (honing) and coarse (sharpening). The fine stage has ceramic slats that can be used for regular maintenance. The coarse stage has diamond-coated abrasive wheels that will reset a dull blade. The coarse (sharpening) notch should be used 1-2 times per year when the blade is dull, while the fine (honing) notch can be used more regularly for knife maintenance.