New to forum, And I need help! I have made blades from files before and the blades stay mirror smooth after final buffing, for a long time. Recently I purchased a Green River skinning blade blank from Koval. I love the design and it stays "Razor" sharp...but the blade stains and discolors everytime I use it. Is this due to the carbon content or what? Can anything stop this? I use the knife in the kitchen as well as when hunting (for skinning etc.) Thanks in advance......Way Cool Site!!!!!!