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#577262 - 08/08/20 08:20 AM Bluing Removal
Woodreaux Offline
Sidelock
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Registered: 09/20/16
Posts: 259
Loc: Baton Rouge, Louisiana
What's the best way to remove old bluing in preparation for re-bluing?
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Jim

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#577264 - 08/08/20 08:24 AM Re: Bluing Removal [Re: Woodreaux]
SKB Online   content
Sidelock
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Registered: 12/31/01
Posts: 5574
Loc: Colorado
I polish it off and never bother with chemical removers.
Steve
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http://www.bertramandco.com/

ACGG Professional metalsmith, firearms import services.

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#577268 - 08/08/20 09:44 AM Re: Bluing Removal [Re: Woodreaux]
SamW Offline
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Registered: 03/09/12
Posts: 333
Loc: SE Utah
Naval Jelly works well...may take a few applications to get really clean. For a re-bluing you will want to polish anyway so Steve's way may be best.
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Sam Welch

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#577271 - 08/08/20 10:31 AM Re: Bluing Removal [Re: Woodreaux]
Mark II Offline
Sidelock
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Registered: 12/06/11
Posts: 738
Phosphoric acid as in the concrete etch from Home Depot will work and it doesn't etch as much as Naval Jelly. Have a tank large enough for the part. Plug the bores and let it soak.

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#577278 - 08/08/20 11:00 AM Re: Bluing Removal [Re: Woodreaux]
Woodreaux Offline
Sidelock
***

Registered: 09/20/16
Posts: 259
Loc: Baton Rouge, Louisiana
Steve: when you are starting with a blued gun, what's your process? Paper at 320 on up? Then soft wire wheel as with the rust blue?

For those who start with chemicals, like Mark and Sam suggested, anyone ever try something like evaporust? It's my go to for rust removal.


Edited by Woodreaux (08/08/20 11:24 AM)
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Jim

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#577284 - 08/08/20 11:40 AM Re: Bluing Removal [Re: Woodreaux]
SKB Online   content
Sidelock
**

Registered: 12/31/01
Posts: 5574
Loc: Colorado
Post above detailing my process. Questions and comments encouraged.
Steve
_________________________
http://www.bertramandco.com/

ACGG Professional metalsmith, firearms import services.

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#577286 - 08/08/20 12:00 PM Re: Bluing Removal [Re: Woodreaux]
BrentD Offline
Sidelock
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Registered: 01/21/04
Posts: 5075
Loc: Iowa
Steve, if a rust-blued barrel did not need the polish, but did need to tidy up thinning blue, could you just clean it well blue over it? Seems that the well blued areas would not really change much while the thin spots caught up. Never had the courage to try this however.
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...never pay Dave "one more dime"

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#577287 - 08/08/20 12:06 PM Re: Bluing Removal [Re: BrentD]
SKB Online   content
Sidelock
**

Registered: 12/31/01
Posts: 5574
Loc: Colorado
Brent....that is the "old gunshow trick", Never "re-finished"...

You certainly can do that. Rust blue is a chemical process that can be stopped and started at will. It actually works quite well in certain situations, especially for small areas of repair. I do that regularly after re-attaching fore end lugs that have come loose.

In some ways it is not that different than blending an area of stock repair in to an existing finish.

Steve
_________________________
http://www.bertramandco.com/

ACGG Professional metalsmith, firearms import services.

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#577290 - 08/08/20 12:15 PM Re: Bluing Removal [Re: Woodreaux]
james-l Offline
Sidelock
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Registered: 11/27/05
Posts: 1260
Loc: California
I've used CLR, its mild compared to the other methods and is available at your local grocery store.
_________________________
I learn something every day, and a lot of times it's that what I learned the day before was wrong


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#577293 - 08/08/20 01:27 PM Re: Bluing Removal [Re: james-l]
Der Ami Offline
Sidelock
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Registered: 07/04/12
Posts: 3563
Loc: East Alabama
If it is still on the market, brick cleaner "Sur Kleen"(?) used full strength works immediately, but has to be washed off immediately also, or it will cause pitting. As far as bluing over old finish that doesn't need polishing, SKB is absolutely correct.
Mike

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