Im not new to collecting knives, but wanted to learn more about caring for the blades so that I don't have to worry about ruining any. I bought a cheap craft knife, cleaned it with alcohol to let it rust. My friend told me salt and lemon juice works if left to sit for ~30 minutes – did not work for my blade. Next, I tried vinegar – did not work and created more foggy spots(majority of spots in picture). I want to know more about what the vinegar did to the metal, and possible methods of reversal.
by Mammoth_Alps_8527