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Hands guide a knife along a rolling Tumbler knife sharpener on a wooden countertop.

Why Your Sharpened Knife Is Still Dull: Avoid These Common Mistakes

Hands guide a knife along a rolling Tumbler knife sharpener on a wooden countertop.

Are you frustrated with your sharpened knife still being dull? Many knife owners face this problem, and it can be caused by common mistakes when trying to sharpen your blade. In this post, we'll explain how to avoid these mistakes and properly sharpen your knife for a razor-sharp edge using the Tumbler Rolling Sharpener.

One common mistake that people make when trying to sharpen their knives is going from a 20-degree sharpening angle to a 15-degree angle. This can be a frustrating process that requires removing significant portions of the blade, and it can create a big burr that makes the knife appear dull. By removing too much metal from the blade, you can actually make the knife duller than it was before you started sharpening it.

To avoid this problem, start by understanding the angle at which your knife is currently sharpened. If your knife is already sharpened at a 20-degree angle, trying to sharpen it to a 15-degree angle will require you to remove a lot of metal from the blade. This can take time, and it's important to be patient and take breaks as needed to avoid making mistakes. Not sure what angle your knife has, or which one it should have? Our 15° vs 20° sharpening angle guide shows how to find your knife's current angle and which knives suit each setting.

Using the Tumbler Rolling Sharpener, you can avoid the frustration of removing too much metal from the blade. The Tumbler Rolling Sharpener has a fixed 20 and 15 degree angle that ensures consistent and effective sharpening with every use. This eliminates the guesswork and frustration of trying to change the sharpening angle too dramatically. A fixed angle only sharpens where the disc meets the blade, though, so if the middle of the edge cuts but the heel or tip still feels dull, see our guide to getting the heel and tip sharp on a rolling sharpener, which shows how to seat the knife and check for a burr at each end.

The Tumbler Rolling Sharpener comes with a diamond plated sharpening wheel that can effectively remove metal from the blade and create a sharp edge. The fine diamond grit make it easy to sharpen the blade, and then create a razor-sharp edge. If your edge still isn't biting after a session, our step-by-step rolling sharpener routine walks through light pressure, checking for a burr and honing it off.

In conclusion, sharpening a knife is a process that requires patience and attention to detail. By avoiding common mistakes such as trying to change the sharpening angle too dramatically, using the wrong tools, or not being patient enough, you can ensure that your knife stays sharp and effective. If you've been using a no-name bargain sharpener, the tool itself may be the problem: our guide explains what cheap and knockoff sharpeners do to a knife's edge. With the Tumbler Rolling Sharpener, you can enjoy a razor-sharp edge on your knife with ease and confidence.

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