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Popular bonded aluminum oxide stone with medium grit performance for sharpening knives on Hapstone Pro sharpeners.
Series
Orange EDM stones were originally intended for the treatment of metal after electric spark machining.
Abrasive
The series is made of bonded aluminum oxide and offers reliable sharpening performance for knives.
Sharpening
These popular stones have medium grit performance and are suitable for general knife sharpening tasks.
Maintenance
Boride stones may have saw strokes on the working surface, lacquer residues, or small chips at corners and edges no larger than 1 mm.
These minor marks are eliminated during stone preparation. Additional lapping can be performed with loose silicon carbide powder or a diamond lapping plate.
Lubricants
Boride stones can be used with water, soapy water, Boride Bori-Lube, or a water solution of dipropylene glycol.
WD-40, refined olive oil, and oleic acid are options for experienced users only.
Preparation
When using water, soak the stone for 1–2 minutes. When using oil, apply 1–2 drops to the surface and spread evenly.
If the stone absorbs the honing oil, use a larger amount of oil.
Specifications
