Rust and Blue Remover?

[islandhopper]

I have used Birchwood Casey Rust and Blue Remover for a long time to remove rust and old parked finishes on smaller parts. But I haven't used it on bolts, receivers or barrels - fearing that using it on these parts would cause hydrogen embrittlement. I know this product is a very weak phosphoric acid so I doubt it would, especially since it is sold to do just this. But what do you all think? I have also used Evapo Rust to do the same thing, but although it will remove the finish, it doesn't prep the metal like Birchwood Casey does. Is Evapo Rust safe to use on receivers and such? Thanks.

Information

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[Chuckindenver]

white viniger will work better,. and its safe to use.
phosphoric acid deluted is what i use to remove blue.
you can also use Muritic acid as well, very deluted..and only leave in for 15mins..

[islandhopper]

I have tried white vinegar once. I left a rear sight cover, slide (from a follower/slide assembly) and some other small Garand part (might have been a screw or something) in it for a few hours without much luck (some of the park came off but other areas didn't), so I left them in over night. Not much else changed. So I left them in for a couple of days. After day two, the vinegar had eaten craters into the metal of all three parts, deforming them. I have used Birchwood Casey Rust and Blue Remover on all sorts of small parts (buttplates, rear sight components, trigger assembly parts, clip latch, etc...) and even an op rod. I used a cotton swab to put a layer on and let it do it's thing and then wipe it off. I've let parts set for days after just wiping it off with a dry rag, with this stuff on it to keep rust from forming and it will not touch the metal, or at least not that I can see. But I've never used it on a receiver, bolt or a barrel - where I feel pressures would be at their greatest during discharge of the weapon.

I've got some Evapo Rust and they claim that it will not cause hydrogen embrittlement. I've used it on some parts and it will strip blue and park as well. I wonder if it is safe to use on receivers?

[Buntlineguy]

I do a lot of bluing for local shooters and have used Birchwood Casey remover on bolts, receivers,etc. I do rinse and then wash in a good solvent before bluing (hot process). The only thing to remember is not to use it on springs. They advise that it may weaken them. I recommend that you at least rinse well after removing. Use a hair dryer to dry and rust should not be a problem.

[staples57]

Try "Evapo-Rust"... works like a charm!

[islandhopper]

I have used Evapo Rust before as I mentioned above, but was concerned that any kind of solvent-remover would cause hydroden embrittlement, or somehow weaken the metal of a receiver or slide. In the end, I used the Evapo Rust. I let the components in the Evapo Rust until I was ready to park them and then just before I'd put the part or parts in, I'd take them out, rinse with really hot water, then spray off the part with brake cleaner, which dries very quickly, and then into the park solution. They turned out well for me.

[dlewis2008]

Moderator deleted... spammer...

[browningautorifle]

Why did we bring this back from 2010? For a sales pitch?

Check us out online @ Evapo-Rust.com

I thought that wasn't allowed here?

[louthepou]

Why did we bring this back from 2010? For a sales pitch?

I thought that wasn't allowed here?

Does sound fishy indeed, will look into it.

[rayg]

Have none of those chemicals handy, just use toilet bowl cleaner it contains Hydrochloric Acid and will remove bluing quicker then you can say it, Ray