Pennsylvania Firearm Owners Association
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  1. #21
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    Default Re: Sending out compleated 80% AR Lower to be Anodized

    Oh crap. Never mind. Lol
    The Gun is the Badge of a Free Man

  2. #22
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    Default Re: Sending out compleated 80% AR Lower to be Anodized

    Quote Originally Posted by Gunsnwater View Post
    Any work done on an 80 makes it not an 80. From the first home cut it is now under ffl rules. Ianal. This is what has been explained to me by lawyers in law classes, subject to my lay understanding.

    Lots of YouTube videos on anodizing. Not hard compared to turning an 80 into a built lower. Just all sciencey and unknown like building an upper until you do it.

    Hard anodizing is just a thicker layer. Anodizing is self limiting as it doesn't conduct.
    Type3 hardcoat is twice or more thick than type2 and requires different procedures. https://www.caswellplating.com/anodi...ng-system.html

  3. #23
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    Default Re: Sending out compleated 80% AR Lower to be Anodized

    Quote Originally Posted by Gunsnwater View Post
    Any work done on an 80 makes it not an 80. From the first home cut it is now under ffl rules. Ianal. This is what has been explained to me by lawyers in law classes, subject to my lay understanding.

    Lots of YouTube videos on anodizing. Not hard compared to turning an 80 into a built lower. Just all sciencey and unknown like building an upper until you do it.

    Hard anodizing is just a thicker layer. Anodizing is self limiting as it doesn't conduct.
    Hard-coat anodizing has extremely fine aluminum oxide powder (pulverized grinding wheel material) in the solution. IIRC , The particles take a charge and 'arc' themselves to the base metal. Makes for a Rockwell 70c hard skin. A high-speed toolbit is 65c. I've done parts and they would spark when a toolbit or drill would
    I don't speak English , I talk American!

  4. #24
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    Default Re: Sending out compleated 80% AR Lower to be Anodized

    What about powdercoating a finished lower? Would that clog up the threads?
    Psalms 73:26

  5. #25
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    Easton, Pennsylvania
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    Default Re: Sending out compleated 80% AR Lower to be Anodized

    Powder coating is too thick could cause a lot of issues.
    www.EastonFirearmsRefinishing.com Owner/Operator, NRA Pistol Instructor

  6. #26
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    Default Re: Sending out compleated 80% AR Lower to be Anodized

    This is what Imma going to do:


    "It seems that the Constitution is more or less guidelines than actual rules"
    My feedback: http://forum.pafoa.org/showthread.php?t=305685

  7. #27
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    Default Re: Sending out compleated 80% AR Lower to be Anodized

    Quote Originally Posted by ExFlyinguy View Post
    This is what Imma going to do:
    I have to assume that the spray on coat is not going to be as durable as professional anodizing.
    And that most duracoating in the wild has been done over a anodized surface.
    So my question is what kind of strengthening can be expected from this coating when done to a non-anodized receiver interior?
    Specifically as it relates to the stress points below the pin.
    How can you have any cookies if you don't drink your milk?

  8. #28
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    Default Re: Sending out compleated 80% AR Lower to be Anodized

    Quote Originally Posted by Brian Ahearn View Post
    Powder coating is too thick could cause a lot of issues.
    That's what I thought.

    One step I did not consider in my first 80% build was treating the milled-out portion.

    Bluing might be another option, right?

    DIY - https://www.duracoatfirearmfinishes....nt=33527890121
    Psalms 73:26

  9. #29
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    Pittsburgh (Allison Park), Pennsylvania
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    Default Re: Sending out compleated 80% AR Lower to be Anodized

    Quote Originally Posted by alpacaheat View Post
    That's what I thought.

    One step I did not consider in my first 80% build was treating the milled-out portion.

    Bluing might be another option, right?

    DIY - https://www.duracoatfirearmfinishes....nt=33527890121
    I'm considering Birchwood Casey Aluminum Black

    https://shop.birchwoodcasey.com/prod...oz-bottle.html

    They make a pen as well for touch up.

    https://shop.birchwoodcasey.com/prod...ch-up-pen.html

    Just found these things searching for coating options. I don't have first had experience.
    "No, it's just a machine. I'm the weapon." - Jack Harper in Oblivion

  10. #30
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    Default Re: Sending out compleated 80% AR Lower to be Anodized

    Quote Originally Posted by Berncly View Post
    I have to assume that the spray on coat is not going to be as durable as professional anodizing.
    And that most duracoating in the wild has been done over a anodized surface.
    So my question is what kind of strengthening can be expected from this coating when done to a non-anodized receiver interior?
    Specifically as it relates to the stress points below the pin.
    The gent in the video that I posted earlier did in fact have a RAW lower(no anodizing). I'm in the camp that believes anodizing does not strengthen the lower.

    Here is his follow up video 2 years later.
    "It seems that the Constitution is more or less guidelines than actual rules"
    My feedback: http://forum.pafoa.org/showthread.php?t=305685

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  1. Where in PA can I get an AR lower receiver anodized?
    By All_Thumbs in forum Gunsmithing
    Replies: 5
    Last Post: January 12th, 2014, 06:51 PM

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