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InversionEdge PRO Sharpening System with Naniwa Stones

Regular price £185.00
Unit price


Tax included.

With our revolutionary new InversionEdge PRO Sharpening System with Naniwa Stones, give your blades razor-sharp, professional-quality edges at home, with ease. This set offers you the ability to quickly restore old, worn knives, and easily maintain a cutting edge.

Set includes:

  • 1 x Naniwa Ultrafine Combination Stone (3,000/8,000 grit)
  • 1 x Naniwa Coarse Combination Stone (220/1,000 grit)
  • 1 x Love Handle
  • 1 x Nöni Tray (31cm x 29cm x 3mm)
  • 4 x Magnets

Our courier will deliver to the address provided at the time of ordering within 3-5 working days of despatch.

If you or someone else isn't available to accept delivery of your shipment, our courier may leave you a delivery attempt notice. Information will be provided on when the next delivery attempt will be made.

If our courier are unable to deliver your parcel, it will be returned to our warehouse. If you still require the goods, this will incur a re-delivery fee.

Free delivery for orders over £50. There is a £10 delivery fee incurred if under £50.


InversionEdge sharpening takes minutes, with results that are more accurate and consistent because human error is eliminated from the angling of the blade. It can be used to create or hone a double bevel: a large narrow-angled secondary bevel to minimise cutting resistance, and a tiny primary bevel for extreme sharpness.


The system is suitable for both Western-style symmetrical blades and Japanese-style asymmetric, chisel-edge blade (like our own Söliditi Usudeba). It can also turn a symmetrical blade into a high-performing chisel-edge.


The set contains two double-sided Naniwa Stones: the coarse side is for honing the secondary bevel, the fine side for honing the primary bevel. The Stone you use depends on whether you’re rescuing a blunt knife or refining a sharp one. The Love Handle clip, which attaches to the Stone, ensures that each bevel is created at the perfect angle. The ferritic steel Nöni Tray provides two angled platforms on which to work, and the rubberised magnets mount your knife securely to the platform while you sharpen.