Rotating Clamp System for Hapstone - Gritomatic

Rotating Clamp System for Hapstone

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Hapstone Rotating Clamp System is an optional upgrade module designed to clamp the knife and flip it easy and fast during sharpening on Hapstone V6 and Hapstone Pro (V5) knife sharpeners. Rotating Clamp System helps maintaining the consistent sharpening angle when flipping the knife.


  • Compatibility: Hapstone V6, Hapstone Pro V5
  • Sharpening angle range: from 13° to 45°
  • Angle tolerance: 0.5°
  • Maximum thickness of the knife spine: 6 mm
  • Maximum blade length: 20 сm (8")
  • Size: 17 x 20 x 18 cm (6½" x 8" x 7")
  • Shipping size: 27 x 17.5 x 9 cm (15½" x 7" x 3½")
  • Shipping weight: 1.6 kg (3.5 lbs)
  • Materials: Stainless Steel

How to use

Attaching the rotating clamp system requires partial disassembling of the Hapstone knife sharpener. Please refer to User's Guide.

Download Hapstone V6 User's Guide (in PDF format)



About Hapstone

In the past few years, Hapstone sharpeners have become extremely popular in Eastern Europe. The team of young engineers has created a line of knife sharpeners combining high quality, rich features, and competitive pricing. Hapstone continues to develop its product range by creating innovative accessories and abrasives.

Product reviews

Questions and answers

If you have a question regarding this product, please feel free to ask.

Grit chart

Courtesy of Mr. Wizard. Please read chart explanation in README.