Re-blue pen


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colorado_handgunner
March 12, 2013, 09:03 PM
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.

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rcmodel
March 12, 2013, 09:12 PM
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

Certaindeaf
March 12, 2013, 09:13 PM
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

Akita1
March 12, 2013, 09:15 PM
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
+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.

bikerdoc
March 12, 2013, 09:16 PM
Beat me to it R C. :)

Hurryin' Hoosier
March 12, 2013, 09:30 PM
Read the instructions. You have to "seal" it with oil after bluing.

colorado_handgunner
March 12, 2013, 09:37 PM
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

Thanks rc. Greatly appreciated.

Sent from my DROID RAZR using Tapatalk 2

hang fire
March 13, 2013, 10:58 AM
Read the instructions. You have to "seal" it with oil after bluing.
And first kill the process with water, then as you stated, dry and oil well.

Jim K
March 13, 2013, 12:08 PM
For minor scratches, some folks have used plain old magic marker (not the "dry erase" kind) with fair results.

Jim

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