Does vinegar remove "cold Blue"?

Bekeart

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I know that vinegar will remove the "rust" bluing.

Will the vinegar remove "cold blue"?

I realize that there are many varieties of "cold blue" and many have "snake oil" veracity of claims.

Bekeart
 
Firearm bluing can be removed with vinegar with a pH of 2 or 3!!

"Safely cleaning firearm bluing requires removing rust and debris without removing the protective oxide finish, using gentle lubricants and non-abrasive tools. Use high-quality gun oil (CLP) and a soft cloth, or 0000 superfine steel wool/bronze wool to gently remove surface rust. Avoid harsh chemicals, brass brushes, and excessive scrubbing, which can damage the delicate blue coating."
 
Vinegar will aggressively remove cold blue.
Put something with cold blue on it in the same room with vinegar and it's gone fast.
 
So…if someone intends to re-blue a gun by any method…using vinegar is as effective and much cheaper to use than a dedicated bluing remover?
 
I would think that white vinegar would be just as effective as a dedicated gun blue remover solution.
 
Yes because it has acidic acid in it.
Anything with acidic acid in it will remove/damage bluing (most fruit juice, ketchup, etc)

Phosphoric acid is another that is mild but will still remove bluing.
Most all of the Rust Remover products like Naval Jelly are just that.

Rust bluing will take a bit longer to remove than Hot Salt Bluing,
Any sort of Heat Temper blue (Nitre Bluing, etc) will quickly disappear when using any of the above.

Always neutralize the steel after using any of these. I rise them and use a simple dishwashing soap with it. That has always removed any chance of after rusting on the metal from the acid.
 
Quoting:
Always neutralize the steel after using any of these. I rise them and use a simple dishwashing soap with it. That has always removed any chance of after rusting on the metal from the acid.

I will suggest first using a mixture of HOT water and Baking Soda to neutralize the acid.
Let item soak in mixture for several minutes and then do the HOT "dish washing" wash.
Rinse in HOT water.
Quickly WIPE dry and let its heat finish the drying.

When dry add OIL - the bare metal is just waiting to rust again.

Bekeart
 
Vinegar is Acetic acid, not acidic acid. ;)
Thank you teacher...

....I will suggest first using a mixture of HOT water and Baking Soda to neutralize the acid.
Let item soak in mixture for several minutes and then do the HOT "dish washing" wash.
Rinse in HOT water.
Quickly WIPE dry and let its heat finish the drying.

When dry add OIL - the bare metal is just waiting to rust again.

Bekeart

Sure can't hurt to use the BakingSoda as well.
I've never had a problem with just using dish soap in all the yrs of using it.
It's the process I use and have used for 50+ years of stripping bluing and also removing Heat Scale from parts ..and I use dilute Muriatic Acid for all that.
The heat scale removal can take up to a few hrs in the mix. Even with that they don't come out looking any different the stuff that gets soaked for blue removal
The med grey color, but no pitting on the parts.
The shine comes right back with either a wire wheel polish up. Or just an easy go over with Scotchbrite,,marron or grey pad color.


Warm water, soap and rinse. I don't use Hot water,,just warm.
Wipe down dry and they don't rust,, at least in my shop.
But every location is different, temp, humidity, etc.

If they are to set around and not be worked on, yes wipe them down with oil of some sort.

Sometimes steel will 'flash rust' after a cleaning or wash&rinse even in water.
Freshly polished steel is especially prone to this.
A thin rust coating will appear in a matter of a couple minutes on the cleaned surfaces.
The rust can be easily removed with a bit of care & light polishing. But it's a pain to have to do especially after all the hard work you do to get the part(s) done the first time.
 
Vinegar may actually be better for blue removal then an actual chemicals made for that because most products like blue remover or Naval Jelly etches the metal much worse.
With vinegar you can control it easier.
Better control limits the polishing needed to remove the etched roughness.
 
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