Cold Blue--How Do You Stop It? - Page 2
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Thread: Cold Blue--How Do You Stop It?



  1. #11
    Esteemed Sharpshooter
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    I'm following this thread out of interest. My original bottle of Formula 44/40 still has a little left in it, bought it in 1973. Almost time for a new bottle. Touched up a front sight last night. I have never had a rusting issue with 44/40, so can't make a negative report on this product. It's the only cold blue I've ever used in 45 years.
    shawlerbrook and gunscrewguy like this.
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  2. #12
    Gun Wizard
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    Only used OXPHO BLUE, applied with cotton ball or Qtip, never rinsed it off??, just wiped down with a paper towel, and liberally oiled with Outers gun oil, never noticed any rust after wards??
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  3. #13
    Tinhorn
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    Balistol is an oil that is slightly basic and will neutralize.

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  5. #14
    Wrangler
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    I use Oxpho Blue as well...no rinse...just rub it down with gun oil. I make my own 50/50 ATF and Kerosene.

    redhawk
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  6. #15
    Sidewinder
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    I use either Oxpho Blu or Birchwood Casey Super Blue.
    1. Thoroughly clean and degrease

    2. Warm the area with a heat gun or blow dryer

    3. Apply with steel wool

    4. After the specified time rinse thoroughly with cold water

    5. Repeat if necessary to get proper color then apply a coat of good gun oil - Hoppes or Outers, not some synthetic or Teflon

    6. Wipe off excess and coat with RIG (Rust Inhibiting Grease)
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  7. #16
    Certified Gunnut
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    Thanks for the many suggestions so far. Glad to see I'm not the only one who has had rusting.

    I was told that steel wool is lightly oiled to keep it from rusting in the package. Just sayin'. If it works for you...
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  8. #17
    Tenderfoot
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    I always use water to neutralize it, then oil. Never had that problem.
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  9. #18
    Gunfighter
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    Ok this is going to sound daft, I always neutralise with vegetable cooking oil read it somewhere long ago. It seams to cure the blueing if this makes sense anyway to rust ever. Gar.
    rob42049 likes this.

  10. #19
    Gun Wizard
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    I clean with alcohol, then heat up the part, use q tip or cotton ball to apply oxpho blue ,wipe down with cloth ,reapply oxpho as much as necessary , then oil it ,never a problem
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  11. #20
    Esteemed Sharpshooter
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    I finally ran out of my 40+ year old bottle of Brownells formula 44-40. At the local Runnings, there was Birchwood Casey Perma Blue. I had a project going and needed it right then. Looked online for directions, and most reports were positive.

    Gently heat the part after completely cleaning with alcohol or boiling in Dawn. Pour out some Perma Blue in a bowl so as not to contaminate the bottle. Apply liberally to part with Q-Tip. Have a bunch handy, use a clean tip, if it discolors, get a new one. Perma Blue likes clean. Slather the part liberally, get it nice and wet/covered. Let it sit a minute or minute and a half and rinse in clean water. Dry thoroughly. Steel wool if you want, but oiled steel wool in the packaging of some brands will ruin the job. I didn't steel wool, but I really rubbed it hard with clean rags. Heat and repeat the process 4 or 5 more times, and you'll get an excellent cold blue. I did a revolver backstrap and triggerguard that I bought in-the-white. I sanded and fit the walnut to the grip assembly, then polished the metal with 400 grit to get the sanding marks out. Oiled it after, and it looks great. As good a cold blue as you can get. No rust at all. An effective and easy to use product. No complaints here. It leaves a dark, bluish black color.
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