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How to protect engraving on a receiver? Login/Join 
Web Clavin Extraordinaire
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What's the best way to protect the bare aluminum on a receiver that's been laser engraved and thus has no anodizing on it?


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Posts: 19837 | Location: SE PA | Registered: January 12, 2001Reply With QuoteReport This Post
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I don't think anything is needed. It will form a protective oxide layer and not go beyond that.
 
Posts: 8944 | Location: The Red part of Minnesota | Registered: October 06, 2002Reply With QuoteReport This Post
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I just leave mine "in the white" where it was engraved. Not sure it's going to really experience much wear 3/1,000th of a inch below the surface.

If something is scratching my receiver enough for it to wear the engraving. I probably got bigger worries.




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Posts: 8837 | Location: Woodstock, GA | Registered: August 04, 2005Reply With QuoteReport This Post
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You can use Alodine, it forms an oxidation and prevents any further corrosion. you'll apply it and then remove it almost immediately.


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Posts: 236 | Location: SDF | Registered: January 13, 2009Reply With QuoteReport This Post
Sigless in
Indiana
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quote:
Originally posted by MNSIG:
I don't think anything is needed. It will form a protective oxide layer and not go beyond that.



This.


Aluminum quickly forms a passivation layer of aluminum oxide. It won't corrode unless exposed to a corrosive agent.
 
Posts: 14114 | Location: Indiana | Registered: December 04, 2003Reply With QuoteReport This Post
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Following engraving, clean engraved area with Acetone and apply Birchwood Casey Aluminum Black. (assuming a black receiver).

In my experience, it works well and makes the engraving appear to be original to the receiver.

This is the product Ident Marking Services uses after they engrave a black AR receiver.

https://www.brownells.com/guns...-black-prod4941.aspx

tp
 
Posts: 908 | Location: TX | Registered: February 09, 2003Reply With QuoteReport This Post
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