Originally Posted by BillDeShivs
The only home-bluing method that works is rust bluing.
Hot Salts Bluing is not that complicated and it is the same process most modern gun makers use (including NEF). the protection against "corrosion" is the same as what the factory finish supplies (and has for decades).
I have been doing it for a few years now. Find yourself a Pottery supply house, they can provide you with the Sodium Nitrate or Potassium Nitrate, the Lye you can get from online suppliers like Dudadiesel or Essential Depot.
To tell you the truth I am a but mystified as to why people like Bill continue to try and scare people away from attempting these types of processes. As long as you follow simple safety guidelines and proper disposal of the waste, the process can be very safe.
I have self taught myself Hot Salts Bluing, Nitre Bluing, Parkerizing and am now looking at learning how to anodize aluminum.
I started a blog to share my experiences in refinishing guns, I, unlike some people, encourage others to take up the hobby and learn the art of refinishing. http://tincanbandit.blogspot.com/2013/05/a-new-start.html