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The Range
Gunsmithing & Repairs
Aluminum Black - Birchwood Casey
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<blockquote data-quote="Sanford" data-source="post: 2945987" data-attributes="member: 27733"><p>Seems some are confusing the "paint pen" with the Aluminum Black in a bottle similar to their Perma Blue product. The Aluminum Black is a chemical process similar to cold bluing, and results in like manner depend a lot on preparation. It's essentially an acid which will lightly etch and darken aluminum - I use it regularly to touch up those little dings you get in AR receivers and parts and it generally turns out well. Not sure I'd try an entire gun, frame, receiver, etc. with it unless I felt like I was able to get them completely clean to the bare metal and had a container large enough and with enough solution to fully submerge them.</p></blockquote><p></p>
[QUOTE="Sanford, post: 2945987, member: 27733"] Seems some are confusing the "paint pen" with the Aluminum Black in a bottle similar to their Perma Blue product. The Aluminum Black is a chemical process similar to cold bluing, and results in like manner depend a lot on preparation. It's essentially an acid which will lightly etch and darken aluminum - I use it regularly to touch up those little dings you get in AR receivers and parts and it generally turns out well. Not sure I'd try an entire gun, frame, receiver, etc. with it unless I felt like I was able to get them completely clean to the bare metal and had a container large enough and with enough solution to fully submerge them. [/QUOTE]
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Aluminum Black - Birchwood Casey
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