OT-Case Hardening Color Question

[AKA Hugh Uno]

it's an oxide finish, thus acts and reacts with almost anything. yes, it's only on the surface.

A. Sunlight

B. Oxygen (more slowly than other factors)

C. Friction/Wear (i.e. you hands)

D. Solvents/cleaners

You can cover the surface with a clear fingernail polish or wax, but bottom line, if you use it, it will fade.