Posted on 2024-02-02
Product description
Selling this Sigma stone used only one time. Sigma stone is made especially for tough-to-sharpen high-alloy steels, like high-speed steel, powder steel.
In contrast to resin-magnesium- or cement-bonded stones, there are no bonding materials in Select II stones. The grit is bonded by a process similar to that used for making glass. As the stone cools, the viscosity increases. This inhibits crystallization and the material assumes an amorphous state. This process is expensive, but results in a stone that carves its way through even the toughest steels.
Condition
- Very good (little to no signs of use)
In original packaging?
- Yes
Imperfections (if any)
noneCountry of manufacture
- Japan
Brand/Manufacturer
Sigma - Select II seriesSeller's return policy
- No returns (5-day Buyer Protection Return Policy for Eligible returns still applies)