NANIWA QA 361 - Half-round special whetstone #1000, 133x28x20 mm, Japan

NANIWA QA 361 - Half-round special whetstone #1000, 133x28x20 mm, Japan

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Whetstones for a concave edge.

Not so long ago, there were no special grinding bars intended for such tools.

Garden knives for pruning and grafting seedlings, pruners, flower and mushroom knives, had to sharpen in uncomfortable ways.

Anyone who has tried to recover concave blade on a flat bar, can confirm how uncomfortable it is.


Gouken Curved Stone easily solves this problem.

The shape is long & convex, just what you need.


No matter whether the blade of your knife, scissors or shears is curved inside or outside, these water stones meet all requirements.

Dimensions thought out, tested, and easily fit in your hand, while having a sufficient working surface.


Three basic grit, in a compact specialized forms.


Coarse 220 - For quick sharpening.

Medium 1000 - To remove deep traces of rough sharpening, and give a normal household sharpness.

Finishing 3000 - for polishing, and maintaining the edge in excellent condition.


You can buy everything individually, or a complete set, with free delivery in Ukraine.


Recommendations for use:

Hold in water for about 10 minutes, until the air bubbles stop coming out.

Ready to work after a short soak.


Keep must be well dried, away from the sun.


Specifications of a whetstone:
Manufacturer: © Naniwa Abrasive
Serie: Goken Carved stone
Country of origin: Japan
Grain: # 1000
Abrasive material: (WA) White Aluminium oxide
Linkage: Organic, with well water adsorbtion. Includes mineral fillers that regulate the physicomechanical and operational properties
Purpose: For concave cutting edge. Maintain normal household sharpness. Removing cutting edge formation traces. Polishing preparation
Dimensions: Length: 133 mm, width: 30 mm, height: 20 mm (133 х 30 х 20 mm)
Weight: ≈ 110 g
Base stand: Purchased separately

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All buyers who bought two or more knives, will get a gift and free delivery by Ukraine

  • Views: 214
  • Product Code: Goken Carved stone QA 361
  • Availability: In Stock
  • 700.00 UAH
  • Ex Tax: 700.00 UAH