Estimated grit for Bluestone is approximately 6000 JIS

A Jasper microquartz structure consists of a fused crystal grains of different sizes

Chinese Bluestone should be used with water as lubricant

Scorpion Series consists of a 2 mm-thick diamond-bearing layer on a 5 mm-thick aluminum base

Jende Resin Bonded Diamonds are used for sharpening knives on Hapstone

hapstone r2 opti knife sharpener bestseller Estimated grit for Bluestone isHapstone R2 Knife Sharpener is the new knife sharpener from Hapstone, supplier of successful Hapstone R1. Hapstone R2 on par with Hapstone V8 and Hapstone M3 is part of the Hapstone Modular Platform, innovative technology to let customers configure and upgrade the sharpening system with no limitations. Hapstone R2 is kitted with the cutting edge rotating clamp module and delivers the ultimate combination of high precision, rich features, and