Boride Thick AS-9 FEPA 150

Boride Sharpening Stones are used for sharpening knives on Hapstone  sharpeners. Boride offers a wide range of stones with different performance values and different rates of wear.

Boride stones are made of aluminum oxide, with the exception of CS-HD series stones, which are made of silicon carbide. All Boride stones are 6 mm thick and are mounted on high quality aluminum blanks. Stones that are 6 mm thick offer a longer life cycle than stock Edge Pro stones that are 3 mm thick and are becoming a community standard.

AS-9 series stones are made of aluminum oxide and were originally intended for the treatment of metal after electric spark machining (EDM). Due to their excellent performance and weak leading, AS-9 stones were soon in demand for sharpening knives. AS-9 320 grit is included in one of the Boride stone bundles.

Specification

• Product size: 160 x 25 x 15 мм (6" x1"х ½")
• Working surface: 154 x 25 x 12 мм (6"х1"х1/2")
• Weight: 83 g (1.6 oz)
• Abrasive: Bonded Aluminum Oxide or Silicon Carbide
• Extra materials: Aluminum Blank, 3M PSA

How to use

Boride stones should be used with one of these lubricants:

• Water
• Soapy water
• Boride Bori-Lube
• Water solution of dipropylene glycol
• WD-40 (for experienced users only)
• Refined olive oil (for experienced users only)
• Oleic aсid (for experienced users only)

In case of using the water as lubricant, soak the stone in water for 1-2 minutes. In case of using the oil, put a small amount (1-2 drops) of honing oil on the stone’s surface and spread it evenly over the stone with a finger. If the stone absorbs the honing oil, use larger amount of oil.

Boride Stones may have the following minor defects:

• Saw strokes on the work surface
• Residues of lacquer
• Small chips at the corners and along the edges (no larger than 1 mm)

All these defects will be eliminated during preparation of the stone. The majority of sharpening stones requires preparation, and Boride stones are no exception. Additional lapping can be performed by customer to improve sharpening quality. We recommend to use loose silicon carbide powder or diamond lapping plate