Rust Bluing

[CapitalBee]

When I was looking into rust bluing, there were some good Youtube videos of firearm rust bluing. Basically a home made humidity chamber and then for boiling off an adapted section of 4" soil pipe and a steamer (along the lines of a face sauna that you could buy online). Can't remember the link, but it's out there..

[Turnup]

Thank you gentlemen - I have passed the links on to my friend and confess to be rather interested in the process myself.