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Posted: 1/3/2012 7:20:15 AM EDT
[Last Edit: 1/5/2012 8:08:38 PM EDT by Triggerbender]
I asked on the gunsmithing side and it just crossed my mind to ask here.

I just made an aluminum rib for a shotgun and serrated the top side of it at 50 LPI.

I was going to use a spray on it but found it was filling in the serrations.

Has anyone used Birchwood Casey Aluminum Black with good results?
Or any other home method?

This is raw aluminum.

I have not found a local anodizer or have the ability to do a home anodizing job.

Thanks.

Update: Got some tried it, poor results waste of time and money IMHO!
Link Posted: 1/3/2012 8:07:21 AM EDT
[Last Edit: 1/3/2012 8:11:25 AM EDT by ColonelHurtz]
I used BCAB to touch up some rings that I lapped.
It's not a hard coat by any stretch. Even over a small area it mottled a little and came out uneven.
None of that can be seen once the scope was mounted.
I just didn't want bright edges peeking out around the tube.

Easy to apply, reacts pretty quickly.
Needs a water rinse to neutralize and clean away.
Does the job but I wouldn't use it for anything other than touch up.
You might want to try Duracoat, Alumahyde or one of the other paint type finishes.
Link Posted: 1/3/2012 8:46:56 AM EDT
OP,
I've had the BCAB work very well on some aluminum and only so-so on others. All were equally clean. Don't know why.
Link Posted: 1/7/2012 3:53:04 AM EDT
Originally Posted By NickySantoro:
OP,
I've had the BCAB work very well on some aluminum and only so-so on others. All were equally clean. Don't know why.


maybe not all Aluminum is equal - alloy or some such
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