Quote:
Originally Posted by stansdds
Cold blue is the least expensive refinish, in my experience it is also the least durable. You can also rattle can refinish it with Duracoat or KG Gunkote. More expensive, but if you follow the directions, they are more durable and rust resistant finishes. If you are patient, you can rust blue it.
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When I refinish blued steel, disassemble all parts from it, bead blast it, then heat it with a hot air gun before dipping it in an immersive bath of bluing salts, then a buffing and polishing with super fine steel wool, and a repeat on the heat and bluing salts. I wind up with an extremely dark blued finish that doesn't wear or scratch easily.