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Very Hot Topic (More than 25 Replies) Fume bluing (Read 30718 times)
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Re: Fume bluing
Reply #30 - Feb 23rd, 2021 at 8:37pm
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Some where around here I have a note included with a Brownell  bluing kit that recommended fuming nitric acid. Of course by the time I got the note I no longer had access to fuming nitric acid. bummer. 
One might be able to do the same thing with nitric and sulfuric but making the mixture is touchy. LOTS of heat and a good chance of getting spattered. Nitric acid gives nice yellow stains on skin whereas Sulfuric acid itches. Don't ask me how I know. 
One of these days I need to try the nitric/hydrochloric combo.
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Ballards may be weaker,
but they sure are neater!

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Re: Fume bluing
Reply #31 - Feb 24th, 2021 at 10:41am
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I'd rather stick with regular rust bluing as it just seems I'll have less chance of an accident, or dangerous situation. Maybe if I was doing something like SxS shotgun barrels I might consider the fume bluing, but not for a single shot barrel.

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