The Friction Forged® edge zone is corrosion proof but the rest of the blade is not. Therefore, to reduce staining, discoloration, and rusting, we recommend that you keep the knife blade clean and well oiled. You may clean the knife with a mild soap and water, dry immediately, and coat the blade with a food grade or petroleum oil to prevent any staining or rusting on the main knife body. If you are going to store the knives for a long period of time, we recommend you remove the knife from the sheath and coat the blade with oil.
Here are a few additional documents you may find helpful with the care and use of your DiamondBlade Knives products.