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7/22/2009 3:54:51 PM EDT
I was building a new lower today and I accidently scratched some of the black finish off my stripped lower putting in the roll pin for the bolt catch.  Since the lower is aluminum, is there a need to repair the finish?  If I were to repair it, what is the best way to go about it?

Thanks.
7/22/2009 4:05:13 PM EDT
[#2]
you can get Alumiblack, I think it is made by birchwood casey. Or you can use a black sharpie marker like I do on my patrol rifle.

J-
7/22/2009 4:22:47 PM EDT
[#3]
I may have to give that product a try.  However, is there any reason to repair scratches or marring, besides aesthetics or "looks"?
7/22/2009 4:25:08 PM EDT
[#4]
repair only if it bothers you.
7/22/2009 6:17:10 PM EDT
[#5]
Scratches are only cosmetic, but as suggested, if it bothers you, birchwood casey alumablack is the stuff you want.

For future reference, use masking and/or electrical tape on your lower during assembly to prevent scratching, especially when installing the bolt catch pin.
7/23/2009 5:59:03 PM EDT
[#6]
The birchwood casey stuff works good.  I used it on an aluminum gas block I had to file open because the slots were out of spec.  The aluminum black stuff made it look almost perfect.  It's a chemical, not a coating.  Put it on, let it stain/soak, then rinse off.
7/29/2009 4:18:58 PM EDT
[#7]





Quoted:



The birchwood casey stuff works good.  I used it on an aluminum gas block I had to file open because the slots were out of spec.  The aluminum black stuff made it look almost perfect.  It's a chemical, not a coating.  Put it on, let it stain/soak, then rinse off.



Is it that different than the B/C Super Black Instant Touch-Up Pen?  I notice that the pen doesn't work all that well in itself.  The flat black leaves a glossy puddle looking build up.  I may be doing it wrong, but the pen coats with more of a paint.  Suggestions?





 
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