Hi folks, came across a Youtube video that supposedly shows a technique of cold bluing that provides rust protection. I wanted to run it by you guys for validity.
The quote here is "After years of experimenting with different cold blues, and trying to match the results of a hot blue, I came up with a method of achieving results similar to a hot blue. You know cold blue only chemically turns the metal black, it doesn't offer any protection whatsoever. Now this is something that will do that. "
Links is here: https://www.youtube.com/watch?v=X-CDOJF-TmY
To summarize, he preps a barrel, heats it up to about 200° with a propane torch, applies Mark Lee's Express browning solution, rinses and and cards with steel wool, and applies four or five cycles of Brownell's Oxpho blue solution rinsing and carding in between.
To my understanding, this still doesn't provide any true corrosion resistance to the steel. Perhaps the act of polishing the steel will remove some nooks and crannies that could start to rust first, but I don't think this creates a layer of oxides like hot bluing would. Perhaps the maker of the video feels that a deeper / richer/ darker cold bluing visually *hides* rust formation, and calls that protection.
Am I missing something here?
The quote here is "After years of experimenting with different cold blues, and trying to match the results of a hot blue, I came up with a method of achieving results similar to a hot blue. You know cold blue only chemically turns the metal black, it doesn't offer any protection whatsoever. Now this is something that will do that. "
Links is here: https://www.youtube.com/watch?v=X-CDOJF-TmY
To summarize, he preps a barrel, heats it up to about 200° with a propane torch, applies Mark Lee's Express browning solution, rinses and and cards with steel wool, and applies four or five cycles of Brownell's Oxpho blue solution rinsing and carding in between.
To my understanding, this still doesn't provide any true corrosion resistance to the steel. Perhaps the act of polishing the steel will remove some nooks and crannies that could start to rust first, but I don't think this creates a layer of oxides like hot bluing would. Perhaps the maker of the video feels that a deeper / richer/ darker cold bluing visually *hides* rust formation, and calls that protection.
Am I missing something here?