Chef'sChoice Diamond UltraHone Knife Sharpener

Yes, the Diamond UltraHone is designed to sharpen both straight-edge and serrated knives. It effectively hones the serrations while maintaining the blade's original geometry.

This model is specifically engineered for 20-degree edge knives. Many Japanese knives are sharpened to a narrower angle, typically 15 degrees, so you should check your knife manufacturer's specifications before using this sharpener to avoid damaging the blade edge.

The first stage uses diamond abrasives to create the initial edge, while the second stage refines and polishes that edge. This combination creates a durable, arch-shaped profile that stays sharp longer than a standard V-shaped edge.

No, the sharpener is designed to apply optimal, gentle pressure automatically. It is engineered to sharpen without detempering the blade, ensuring the metal remains strong and durable.

Not at all. The unit features precise, built-in guides that automatically stabilize the knife and hold it at the correct 20-degree angle, making the process foolproof.

The unit is largely maintenance-free due to its durable diamond abrasives. Simply keep the exterior clean with a damp cloth and ensure the sharpening slots remain free of metal shavings.