Global Knife Sharpener

Yes, this sharpener is compatible with most straight-edged kitchen knives. However, it is specifically calibrated for a 15-degree edge angle, so it works best on Japanese-style blades.

Adding water mimics the traditional waterstone process. It helps lubricate the ceramic wheels, prevents the blade from overheating, and washes away metal filings to ensure a cleaner, more precise edge.

No, this sharpener is designed exclusively for double-bevel, straight-edge blades. Using it on serrated knives or specialized single-bevel blades will damage both the knife and the ceramic wheels.

You should use light, consistent pressure. The ceramic wheels are designed to do the work, so pressing down too hard can actually damage the blade edge rather than sharpen it.

The white wheel is a coarse grit designed to repair dull or slightly chipped edges. The pink wheel is a fine grit used for standard maintenance and polishing the edge to a razor-sharp finish.

Frequency depends on how often you cook, but for most home kitchens, using the fine stage every few weeks is sufficient. Only use the coarse stage when you notice the blade struggling to cut through ingredients like tomato skins or onions.