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Re-blue pen

Discussion in 'Gunsmithing and Repairs' started by colorado_handgunner, Mar 12, 2013.

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  1. colorado_handgunner

    colorado_handgunner Member

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    I have a marlin 795 that had a large scrape on the dovetail as the result of a poorly designed rail mount. So I applied Re-blue from a birchwood casey Re-blue pen. However, instead of re-blueing, the atea now has a rusty color to it.

    Does the re-blueing pen cause rust or is this just a less than ideal color result? Thanks.
     
  2. rcmodel

    rcmodel Member in memoriam

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    Bluing is rust.
    A form of iron oxide called magnetite which is black (Fe3O4).
    Rust is also iron oxide, except it is red iron oxide (Fe2O3).

    Depending on the steel, it can come out slightly red, plum, or actually sometimes blue or black if you are lucky.

    Degrease with a cotton ball and rubbing alcohol, and keep trying.

    It my have just had old oil or grease the pin picked up, which blocked the formation of black magnetite.

    rc
     
  3. Certaindeaf

    Certaindeaf member

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    Never used the pen but Q-tips and cold blue. Try another coat or so and or oil it after touching it up. good luck
     
  4. Akita1

    Akita1 Member

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    +1 on that; used a pen once on a barrel scratch and it worked fine, but had to reapply several times. I more consistently use cold blue.
     
  5. bikerdoc

    bikerdoc Moderator Staff Member

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    Beat me to it R C. :)
     
  6. Hurryin' Hoosier

    Hurryin' Hoosier Member

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    Read the instructions. You have to "seal" it with oil after bluing.
     
  7. colorado_handgunner

    colorado_handgunner Member

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    Thanks rc. Greatly appreciated.

    Sent from my DROID RAZR using Tapatalk 2
     
  8. hang fire

    hang fire Member

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    And first kill the process with water, then as you stated, dry and oil well.
     
  9. Jim K

    Jim K Member

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    For minor scratches, some folks have used plain old magic marker (not the "dry erase" kind) with fair results.

    Jim
     
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