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jimmy
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Rust bluing a brown gun.
Oct 12th, 2021 at 8:26pm
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Anyone every try boiling or steaming a brown gun? 

Wonder if it would turn blue?

Guessing you will need to sand and rust though.
  
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rodneys
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Re: Rust bluing a brown gun.
Reply #1 - Oct 13th, 2021 at 6:01pm
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I would degrease it and boil it what have you got to lose just my two cents
  
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JLouis
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Re: Rust bluing a brown gun.
Reply #2 - Oct 13th, 2021 at 6:09pm
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My Dear friend and a fellow competitor does an outstanding job of Rust Blueing for Friends. I personally do not have a clue of the process that he actually uses but the one that he did for me. And all of the others that I have seen have been quite outstanding to say the least.  Hopefully he might now chime in to share his own personal process.
  

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craigster
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Re: Rust bluing a brown gun.
Reply #3 - Oct 13th, 2021 at 8:41pm
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It may depend on the original formula of the solution used to brown the gun. I've used Laurel Mtn Forge for both browning and bluing and it works both ways. I have not tried other solutions for browning, only rust bluing. I don't think there's all that much difference between solutions so they all might work like LMF. As has been suggested, degrease and boil and see what happens.

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marlinguy
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Re: Rust bluing a brown gun.
Reply #4 - Oct 13th, 2021 at 8:57pm
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I wonder if time might be a consideration in turning browned metal surfaces to blued also? Is there a certain time frame after browning is applied before it needs to be boiled to turn blued?
  

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JerryH
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Re: Rust bluing a brown gun.
Reply #5 - Oct 13th, 2021 at 9:59pm
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I'm certainly no expert but have turned out a few "three foot" rust blued barrels. I grade my rust blued barrels on from how far away they look good to me. Grin

Rust bluing is done by multiple applications of an oxidizing agent, boiling and carding off the barrel between each application of the oxidizing agent.

I really don't know what boiling a brown (brown as in old blueing turned brown) rifle would do to the finish. As craigster said it could depend on the original type of bluing, and who knows what else.

I would be interested in how it turns out if you decide to try it.

A bit different path, but a friend recently applied some Renaissance wax to a very brown Remington Model 8. I've not seen it yet but he tells me it was surprising how much blue color it brought back. 

I used Renaissance wax to seal the last barrel I rust blued and was very impressed with how it turned out.

Jerry
  

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Re: Rust bluing a brown gun.
Reply #6 - Oct 13th, 2021 at 10:19pm
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To the chemists out there: which is it that induces the black finish we all love, and which is just good old rust - ferrous oxide or ferric oxide. I had the chemistry explained to me once but I'm darned if I can remember. All I know is how to get a nice even rust blue on barrels and parts but not the chemistry of the process.
  
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marlinguy
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Re: Rust bluing a brown gun.
Reply #7 - Oct 13th, 2021 at 10:26pm
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I guess I misunderstood the original question? 
I thought he meant a gun that had been given a browned finish vs. a blued; not a blued gun that turned brown?
  

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craigster
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Re: Rust bluing a brown gun.
Reply #8 - Oct 13th, 2021 at 10:35pm
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gnoahhh wrote on Oct 13th, 2021 at 10:19pm:
To the chemists out there: which is it that induces the black finish we all love, and which is just good old rust - ferrous oxide or ferric oxide. I had the chemistry explained to me once but I'm darned if I can remember. All I know is how to get a nice even rust blue on barrels and parts but not the chemistry of the process.


Have a good time:

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jimmy
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Re: Rust bluing a brown gun.
Reply #9 - Oct 14th, 2021 at 10:26am
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marlinguy wrote on Oct 13th, 2021 at 10:26pm:
I guess I misunderstood the original question? 
I thought he meant a gun that had been given a browned finish vs. a blued; not a blued gun that turned brown?



I meant a blued gun that turned brown. 

Though I kind of like the brown look on some guns. Was really just curious. SSDave gave the answer I was expecting. Thanks.
  
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craigster
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Re: Rust bluing a brown gun.
Reply #10 - Oct 14th, 2021 at 11:23am
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I think the question should have been,   If I boil a dirty old rusty gun  that was originally blued will it turn blue again ?
  
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jimmy
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Re: Rust bluing a brown gun.
Reply #11 - Oct 14th, 2021 at 1:20pm
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craigster wrote on Oct 14th, 2021 at 11:23am:
I think the question should have been,   If I boil a dirty old rusty gun  that was originally blued will it turn blue again ?



Grin

I figured you would have to degrease and card it but doubted it would end up looking good.
  
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Re: Rust bluing a brown gun.
Reply #12 - Oct 15th, 2021 at 10:22am
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It might not look worse than it does now; just “different.”

If it is only the patination that eventually replaces the original finish, I would guess that boiling it would result in the grey finish that you get with one application/rusting/boiling/carding of rust bluing.  It would probably not be acceptably dark, but might accentuate any dings and scratches that weren’t removed beforehand, and any handling wear would still be bright, and perhaps even more noticeable.

I had a Stevens barrel that I browned without boiling that has darkened over the decades, and a revolver that stayed brown because I was boiling it at too high an elevation to convert the brown/red rust (which, IIRC, is Fe2O3) to the magnetic black rust (again, IIRC, Fe3O4).  But over the years, it has darkened to an acceptable blue-black.

The only way to know for sure is to try it.
  
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