Slow Rust Bluing

[ChillyB]

Here is my finished 870 TX. Slow Rust blued with Laurel Mountain Barrel Brown. Took about a week, maybe 5-6 treatments

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[Scorpion8]

Looks great! Is that a cold blue process?

[ChillyB]

Maybe? I consider "cold blue" to be the wipe-on wipe-off chemicals that give instant gratification and long term regret.

This process is s slow rust where the chemicals produce a velvety red-brown rust. Then you boil to convert it to black, then you card off the velvet. Repeat until you swear next time to pay a gunsmith for hot blue job.

Supposedly this is the most durable form of bluimg, and was the standard method in early half of 20th century.

[Dreadi]

Looks great! Is that a cold blue process?

Nah. Those are two are not the same.


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[ChillyB]

If question was to inquire whether the process requires special equipment and chemicals like hot caustic salts then it does not. I suspect hot bluing was developed to productionize the process and result in high gloss finish, not because hot bluing was superior. My interpretation of a short amount of study, not significant experience.

Slow rust bluing isnt hard. A friend once stated there are no easy jobs or hard jobs, only fast jobs and slow jobs. This is a slow job.