Arkansas Grey Polisher stones should be used with water or oil as a lubricant

and the spine thickness spine is 5 mm

coarse silicon carbide stones of 120 and 240 grit can be used as a universal stone due to their harder bonding

The Straight Edge provides a level of accuracy far greater than that of a conventional metal ruler

but unlike synthetic abrasives

wholemilled fillet clamps for hapstone r2 pair Arkansas Grey Polisher stones shouldWholemilled Fillet Clamps for Hapstone R2 utilize CNC milled superelastic duralumin alloy jaws with internal undercut for full flat grind blades. Wholemilled Fillet Clamps can be combined with other Hapstone clamps of standard length. The kit includes 2 clamps.