Bethesda Black is preliminarily lapped and does not require lapping after purchase

stones may have defects and inclusions

Centaur Series is dual side diamond with two 1 mm-thick diamond-bearing layers on the aluminum plate

If you achieve irregular scratch pattern or microchipping

CS-HD will wear extremely fast when used on soft steel

boride pc stone for edge pro Grit:400 Bethesda Black is preliminarily lappedBoride Sharpening Stones are used for sharpening knives on Hapstone Pro 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