Presto EverSharp

No, this model is designed specifically for straight-edge blades. Attempting to sharpen serrated knives with this system may damage both the blade and the sharpening wheels.

The selector features three distinct settings—thick, medium, and thin—that you adjust before inserting the knife. This ensures the grinding wheels meet the blade at the optimal angle for its specific thickness, preventing unnecessary metal removal.

Yes, it is compatible with Santoku knives. Just be sure to use the appropriate setting on the adjustable blade selector to match the thinner profile typical of Japanese cutlery.

No, this is a dry sharpening system. The Sapphirite and ceramic wheels are designed to work effectively without any lubrication, keeping the process clean and straightforward.

Because the motor runs at a controlled speed and the Sapphirite wheels are designed for efficient material removal, the risk of overheating is minimal. However, always use light, consistent pressure and avoid pushing too hard to keep the metal cool.

You generally only need to run the knife through all three stages when the blade has become noticeably dull. For routine maintenance, you can often skip the coarse stage and use the medium and polishing stages to touch up the edge.