Re-blueing question

Discussion in 'Engraving & Refinishing' started by Dimitris76, May 5, 2012.

  1. Dimitris76

    Dimitris76 New Member

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    Can a gun with laser etched lettering on the receiver be reblued?
    What will happen to the lettering?

    Dimi
     
  2. JohnJak

    JohnJak New Member

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    If I'm not mistaken you'll be good to go.
     

  3. mountainman13

    mountainman13 New Member

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    Assuming you are using a blue remover and not bead blasting or anything. It will be fine.
     
  4. Dimitris76

    Dimitris76 New Member

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    By "laser etching" I mean this gold/silverish finish that an ever increasing number of newer arms are having.

    This is an example:
    [​IMG]

    Are those letters etched before or after blueing the gun?
    In other words, is the metal's surface permanently "burned" by the laser beam so that subsequent hot/cold blueing treatments will not ruin the lettering?

    Dimitrios
     
  5. mountainman13

    mountainman13 New Member

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    It would likely blue over the coloring in the lettering. It wouldn't remove enough material to take the etching off. You could go back through after and color fill.
     
  6. Dimitris76

    Dimitris76 New Member

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    Mountainman,

    thank you for your answer!

    If I understand correctly what you mean is that blueing will cover and make the laser etched lettering invisible.
    Color fill? What does this mean? Redo the laser etching?

    Dimitrios
     
    Last edited: May 9, 2012
  7. mountainman13

    mountainman13 New Member

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    Blueing will not remove the etching but will likely remove/cover the yellow/gold color that is there now.
    What you could do if you want the color in the etching would be to color fill or basically go back over the etching with a color of your choosing. It's up to you everything can be the same color (lettering etc will still be there but less obvious) or you can redo the lettering etc with whatever color you want.
     
  8. Dimitris76

    Dimitris76 New Member

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    So this yellowish color is paint? What kind of paint and with which teqnique is it applied on the etched surface?
     
  9. hiwall

    hiwall Well-Known Member

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    I'd be interested to hear from someone who has done this or seen it done. That etching is very very shallow. My guess would be that it would be gone for good. I freely admit that is only a guess. That is why the the BATF has rules about how the serial numbers are put on guns.
     
  10. Dimitris76

    Dimitris76 New Member

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    The way I understand the procedure during etching the laser beam is engraving a very accurate groove which is shallow - much shallower than the usual mechanical engraving the traditional abrasive rotary tools or stamping perform.

    So the factory procedure might be something like this:

    1. The gun is hot blued as usual.
    2. The lettering, emblems, etc are laser etched.
    3. Some kind of paint is smeared on the engraved surface.
    4. The excess die is wiped away and the coloring stays only in the grooves.

    So my questions to those who know are:

    1. If I chemically remove the factory blueing, do I remove those shallow laser grooves too?
    2. If I cold blue, without previously removing the blueing, do I cover the laser grooves?
    3. What kind of paint do I have to use to refill those grooves?
    4. How do I apply this paint? Brush? Airbrush? Smear it in with a cloth/cotton swab?

    Dimitrios
     
  11. TheOldMan

    TheOldMan New Member

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    Lemme answer your questions:

    Chemically removing the blue will NOT remove the etching.. Reason being (obviously) the surface has been "etched" the chemical used will only remove the blue.. 2) If you chose to cold blue without removing the old finish, it will NOT cover the laser groves.. It will only blue the metal.. The blueing chemical is not a filler it only reacts to the ferus metal surface.. What will happen is, if the chemical used to remove the old bluing removes the paint, you will have to re-fill the etching with fresh paint. 3&4) I am not 100% sure but I would assume it to be a laqure based paint of some sort. I imagine you could also use a paint much the same as used in model building. Simply apply with a brush and wipe away the excess before it sets and then allow to dry..

    I have to ask though, judging by the pics you attached, why are you wanting to reblue to start with? If you have an area that's been scratched or rubbed etc, simply clean that area and apply cold blue to the affected area. No need to strip the entire firearm and do it over again. :confused: Was your picture just an example? If so, how bout posting a picture of the firearm you are concerned about rebluing.. I've been restoring/refinishing firearms for several years so I know a little bit about this.
     
    Last edited: May 14, 2012