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S&W-Smithing Maintenance, Repair, and Enhancement of Smith & Wesson and Other Firearms.


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Old 05-20-2017, 01:01 PM
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Default GUN BLUE PASTE

Looking for some advice please. I saw the tube of gun blue paste and Id like to know if this works, I have a old Colt and S&W hand ejector and I've cleaned them up a bit but the blue is rubbed/worn off and would like to try and re-finish them or at least one..this is what I'm asking about.
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Old 05-20-2017, 01:50 PM
Ranger514 Ranger514 is offline
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I've been wondering the same thing, since I have a loading port gate on a Winchester that needs a touch up. I see they also make a liquid, but I've never used the stuff.
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Old 05-20-2017, 02:00 PM
Pisgah Pisgah is offline
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Depends, how you define "work". Yes, it will darken bare steel. For small spots or scratches it can work fairly well, but even when it does close examination will reveal that it's a cover-up. Refinishing an entire gun rarely works out very well. Thorough degreasing of the gun and sometimes warming the steel before application can help, but you'll usually end up with a somewhat uneven result that won't fool anybody in to thinking it's a genuine blue job. This holds pretty true for all cold bluing solutions -- and there are many -- and some solutions work better on some steels than others. For me, a better and usually more attractive option for well-worn finishes is just to clean them up well, remove any active rust, and keep 'em well-oiled thereafter. I'd buy one that had received that treatment before I would one that had been cold-blued, but preferences vary and some wouldn't mind the cold reblue.
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Old 05-20-2017, 03:32 PM
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I used it to touch up the grip serrations on a 57. For that it worked very well as opposed to some other cold blues that tended to wear off. It blended in nicely but I don't know how it would look in a more polished area of the finish
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Old 05-20-2017, 03:43 PM
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Do yourself a favor and locate some Brownell's 44/40 instant gun blue, and don't wast time/money on trying all the rest... Brownell's Oxpho Blue is a near second but no other "cold blue" products IMHO come close to the darkness of color and durability of finish that one can achieve using 44/40.
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Old 05-20-2017, 04:33 PM
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The two best Cold Blues (IMO) are the Birchwood Casey Gun Blue Paste you are showing and the Brownell's Oxpho Blue paste. Now don't expect Hot Bluing durability, but IMHO there is no better than these two for cold bluing.
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Old 05-20-2017, 10:54 PM
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Thanks guys. This is my project, she shoots nicely.
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Old 05-20-2017, 11:03 PM
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I've had the best luck with 44/40 and Oxpho Blue, not so much with the paste. The cold blues are OK for touchups or small parts, no good for a complete blue job. I can get a killer black oxide on small parts by bead blasting to bare metal, cold blue, let dry, then oil. The bead blast surface reacts way better than a polished surface.
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Old 05-20-2017, 11:08 PM
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I know its not a S&W but I want to keep it.
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Old 05-21-2017, 08:56 AM
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Quote:
Originally Posted by BIGDOC View Post
I know its not a S&W but I want to keep it.
Oh well, that's different. For a Colt, I recommend Sherwin Williams in any blue color you desire. Just dunk it in the can, then hang it out to dry.
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Old 05-21-2017, 11:25 AM
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I have more brands of cold blue than a junky has pills. The
different ones react different on different steels. For any of it to
work effort must be put into prep. Degrease and polish. Seems
like the softer the steel the better it works. I would never use
cold blue on a good gun. I have done many single barrel shot
gun barrels with it. Looks good but doesn't last long. I even had
a Bubba barrel jig made up using Bar BQ rotisserie, to apply
solution evenly.
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Old 05-21-2017, 11:31 AM
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The only luck I have had with touch up is darkening the front sight. Many years ago I used a gun blue to touch up a Colt Sauer it removed the blue and the company paid to re blue the entire rifle so test it on an inconspicuous area
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Old 05-21-2017, 12:57 PM
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Spot touch up aside, using any cold bluing to try an refinish a gun is like using rattle cans of Rustoleum to repaint a classic car. At least in my not-so-humble opinion.

If you really like the gun, pay a professional to redo it right. Otherwise, Tyrod is right.
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Old 05-21-2017, 01:54 PM
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The Oxpho Blue cream I like for touch up, you can "build up" the color in layers. I just did a filed down front sight to bare metal, and 3 applications (and letting the 3rd application sit on the bare metal overnight) and it is plenty dark. It can be buffed out like a polished blue also.
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Old 05-21-2017, 10:20 PM
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I have a Remington 512 that someone cold blued "badly" and then clear coated to permanently enshrine their work. Ugh. I stripped it all off, polished the bejeezus out of it, and "cold blued" it with the Ospho paste. I heated it up before each application, and ended up with 6 coats on it. In the daylight, it looks pretty good, at least I would no longer be ashamed to shoot it. However, I use an LED headlight a lot, and the LED light will shine "through" the cold blue. So under close inspection, a definite meh. Looks far better than it did when I started, but it wouldn't fool anyone.
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