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Naniwa Gouken Curved Water Stone

Naniwa Gouken Curved Water Stone

Item # QA

220 - $14.99
In Stock
1000 - $14.99
Ships in 1 to 2 weeks
3000 - $17.99
In Stock
All 3 Grits - $43.17
Ships in 1 to 2 weeks
  • Convex and Concave Faces
  • Great for Curved Knives
  • 220, 1000 or 3000 Grit
  • Buy All 3 and Save!


A Water Stone for Curved Blades

Water Stones have become a favorite of sharpeners in search of the best edges. But previously, sharpeners working with curved edges like those found on pruning shears, florist's and grafting knives, and hawksbill knives have had to work mostly with flat stones, and anyone who has tried to sharpen a concave curve on a flat stone can attest to the difficulty that presents.

The Gouken Curved Water Stone neatly solves that problem. These stones feature a long, narrow shape with one edge shaped to a convex curvature, and another to a concave. Whether your knife, shears or carving tool has an inside or an outside curve, these water stones fit the bill.

Handy Size

At 5-1/4" (133mm) x 1-3/16" (30mm) x 3/4" (20mm), the Gouken Curved Water Stone fits comfortably in the hand, and will work with a wide variety of different blades.

3 Grits

The Gouken Curved Water Stones are available in three grits:

  • Coarse 220 - For fast sharpening
  • Medium 1000 - For lighter sharpening and refining after using a coarse stone
  • Fine 3000 - For finishing and maintaining sharp edges
Buy them individually, or get all three grits and save.

Care and Use

The Gouken Curved Water Stone should be soaked until saturated prior to use. Generally, this takes several minutes, but the exact time may vary. Look for a trail of bubbles when you submerge the stone. When the bubbles stop or significantly slow, the stone is saturated and ready to use. These stones should not be stored long term in water, and should be allowed to air dry between uses.

Made in Japan.

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I recently placed my first order after finding you on the web while looking for grinding wheels. I am a customer for life. Here's why. My first order was a simple white grinding wheel for a "normal joe's shop". When I received the wrong wheel (150 grit instead of the ordered 100 grit) I called and without hesitation or the 3rd degree another wheel was sent off. No questioning of my integrity, intelligence or honor. Simply "I am sorry, we'll send the correct wheel off immediately..." The right thing was done by a neat guy. I was treated like an adult. Unbelievable in this day and age...proper...and priceless. Price, performance, responsiveness and customer service par excel-lance. 6-Stars! All my sharpening orders, albeit small shop orders, will now be with you. Promote you I will.
Greg T, Iowa