Nakiyo Extra Large Professional Waterstone

Synthetic corundum waterstones are the tool of choice for most skilled sharpeners, and for good reason. Offering faster action than diamond stones without damaging your knives like pull-through and automatic sharpeners, these stones produce a finer finish than nearly any other method.

Nakiyo waterstones are made of solid bonded corundum and feature a much larger surface area—over 24 square inches—than other stones on the market in order to improve durability and ease of use. A non-slip rubber base is included with each stone.

Grit Guide

We offer eight different grits to give you maximum control over your edge, but a sufficiently sharp edge can usually be achieved with as few as two or three stones.

• 220 (very coarse): For repairing chips, dents, and badly blunted edges.
• 400 (coarse): For initial shaping of an edge after moderate to heavy use.
• 1000 (medium): An intermediate grit to follow coarse sharpening, although it can be used as a starting point for a frequently maintained knife.
• 3000 (fine): For finishing to an acceptable edge, or as a bridge between medium and ultra-high grits.
  
• 6000 (very fine): For finishing to a razor edge.
  

Want the most bang for your buck? We also offer combination stones that combine two grits into one stone.

Looking to go the extra mile? Nakiyo finishing stones are available in 8000, 10,000, and 15,000 grit for extreme sharpness.

Tips & Care

Nakiyo waterstones must be soaked in water for at least 15 minutes before use and kept wet during use by periodically dripping or spraying water onto the surface. They should not be submerged for long-term storage.

Be sure to sharpen your knife at its correct edge angle. This will typically be 15-18° for Japanese knives and 20-25° for Western knives.

Your stone will last for many years of regular use and care, but over time, it will preferentially wear in areas where you apply the most pressure. The surface can be easily flattened with a flattening stone to restore it to maximum effectiveness.