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Synthetic Aoto Whetstone 6" x 1"



Abrasive Synthetic Aoto seminatural whetstone
Available Grits 📊 Grit Chart Estimated
3000 JIS EF
Country of Origin Japan
Extra Material Mounted on aluminum blank
Form Factor Edge Pro
glgc 3k
Lubricant Water
Thickness of Abrasive 5-6 mm
Total Thickness 9 mm
Working Surface 152 x 25 mm (6" x 1")



Synthetic Aoto sharpening stones are used for fine sharpening knives on Hapstone and Edge Pro knife sharpeners. Synthetic Aoto stones are made of milled Aoto whetstone. Estimated grit for Aoto is approximately 2000-3000 JIS. All Synthetic Aoto are mounted on high quality aluminum blanks.

Aoto (青砥) Whetstone is mined in Kameoka, Kyoto in Japan.

Synthetic Aoto stones are universal, and can be used to sharpen knives of any steel.


  • Product size: 160 x 25 x 9 mm (6" x 1" x ⅓")
  • Working surface: 152 x 25 x 6 mm (6" x 1" x ¼")
  • Weight: 80 g (2.8 oz)
  • Abrasive: Silica stone
  • Extra materials: Aluminum Blank, 3M PSA

How to use

Synthetic Aoto stones should be used with one of these lubricant:

  • Water
  • Soapy water

Synthetic Aoto stones do not have any minor defects.

Synthetic Aoto stones do not require any preparations. It's preliminary lapped.