The Forging Process:
Each J W Bensinger custom knife begins as a bar of the appropriate alloy, but oversized to allow for significant forging reduction during the shaping of the blade. This results in reduction of grain size in the crystalline structure of the finished blade, offering meaningful improvement in the sharpness, strength, and sharpenability of the knife.
The blade is then ground to shape, normalized to remove any stresses from forging or grinding, and differential hardened in oil three times. This gives a fully hardened edge and a tough body to the blade. The blade is then given two tempering soaks, tested, polished, and mounted in a hilt.
Blades in the plain carbon steels (1095, 1084 and such) are differential quenched and tempered twice, without the triple quench (since they lack the alloying elements which benefit from the process.)