Does Evapo-rust remove bluing?

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Title pretty much sums up my question. I have some .30 Carbine magazines, the original 15 rounders with that beautiful polished blue they have but a few have freckles of rust on them. I sure would hate to strip of that gorgeous bluing using Evapo-rust if it does attack bluing.
 
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I've never tried it, but I have had good results removing rust freckling with Kroil and 0000 brass wool. Let the Kroil work for a day or two and then be gentle with the pad. You can hit stubborn areas with the edge of a pre-1982 penny after soaking, but go easy on the pressure.
 
No need to reblue (yet), in my opinion. Gently passing over with 0000 bronze wool and oil—as s&wchad posted—works on light freckling. Clean thoroughly and lightly wipe with CLP afterwards.
 
The bottom line is ANYTHING which removes rust removes bluing (black oxide). Black oxide is "tougher" than regular rust, so a "rust remover" removes bluing slower/requires more effort. As far as "Evapo-rust" goes, I never heard of it.

I remove light/incipient rust with bronze wool and oil---any kind of oil. And I let the wool and oil do the work---no scrubbing.

When it comes to heavy rust, I have never encountered heavy rust and I have no intention of doing so.

Ralph Tremaine
 
Without a doubt it removes bluing.

+1 on that.

It does have an advantage of not etching the steel surface like when using even a weak acid though. Once the rust is removed, the stuff doesn't effect the steel itself. Leaves it a med grey color like most of them do.
Sometimes a black coating that rubs right off.

If you do use it, submerge the part(s) all the way in the stuff.Anything left above the 'water line' will show a mark where that line was. Easy enough to polish out, but you don't have to if you dunk it all the way.
 
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