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Thread: Marking cam pins?

  1. #1
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    Marking cam pins?

    This is an interesting idea: https://www.forwardcontrolsdesign.co...Pin_p_206.html However I don't see why I can't mark a cam pin myself. Would it be OK to make a small notch in the region of the dimple using an abrasive stone or file?

    scp.jpeg

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    Quote Originally Posted by Disciple View Post
    This is an interesting idea: https://www.forwardcontrolsdesign.co...Pin_p_206.html However I don't see why I can't mark a cam pin myself. Would it be OK to make a small notch in the region of the dimple using an abrasive stone or file?
    Shouldn’t hurt anything......seems like a great idea

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    Quote Originally Posted by Disciple View Post
    This is an interesting idea: https://www.forwardcontrolsdesign.co...Pin_p_206.html However I don't see why I can't mark a cam pin myself. Would it be OK to make a small notch in the region of the dimple using an abrasive stone or file?

    scp.jpeg
    It’s fine. Or use the same punch you use to stake your castle nuts.
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    It's not a bad idea, I think I'll center punch my cam pins.

    Last edited by titsonritz; 08-06-20 at 21:24.
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    Ive had cam pins that have crazy groves in them when I cleaned them last. It was strange and didn't look normal.

    Edit: Damn that video explained exactly what I was referring. But I dont understand why flipping them around makes any difference. I hear the guy but dont understand why it matters. Educate me Titsonritz.

    PB
    Last edited by Pappabear; 08-06-20 at 21:50.
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    Quote Originally Posted by titsonritz View Post
    It's not a bad idea, I think I'll center punch my cam pins.
    From the video you just posted: "you can't just grab a punch and start banging on this" which is why I plan to use an abrasive file.

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    Quote Originally Posted by Disciple View Post
    From the video you just posted: "you can't just grab a punch and start banging on this" which is why I plan to use an abrasive file.
    Without f'ing up your punch, I have a few sacrificial center punches that will get the job done.
    Last edited by titsonritz; 08-06-20 at 23:09.
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    Quote Originally Posted by Pappabear View Post
    Ive had cam pins that have crazy groves in them when I cleaned them last. It was strange and didn't look normal.

    Edit: Damn that video explained exactly what I was referring. But I dont understand why flipping them around makes any difference. I hear the guy but dont understand why it matters. Educate me Titsonritz.

    PB
    Because the wear becomes consistent, essentially forms a custom fit. Flipping it around will make different wear on both sides. Picture this, if you never once removed your cam pin it will have a little on one side and lot on the opposite side, if you flip it around it will wear a lot on both sides. This wear will over time will oblong the cam pin hole in the bolt. The two most common places a bolt will fail are the lugs on either side of the extractor and the cam pin hole. I'm sure it is a minor issue and will only come into play with high volume users, but I'll take what I can get for nothing but a consistent practice. At least that is what I'm getting out it and hope my dribble makes sense as I'm a few drinks deep.

    I think FCD's site description is perfectly accurate when it calls this as a "why didn't I think of it" moment.
    Gettin' down innagrass.
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    Quote Originally Posted by titsonritz View Post
    Because the wear becomes consistent, essentially forms a custom fit. Flipping it around will make different wear on both sides. Picture this, if you never once removed your cam pin it will have a little on one side and lot on the opposite side, if you flip it around it will wear a lot on both sides. This wear will over time will oblong the cam pin hole in the bolt. The two most common places a bolt will fail are the lugs on either side of the extractor and the cam pin hole. I'm sure it is a minor issue and will only come into play with high volume users, but I'll take what I can get for nothing but a consistent practice. At least that is what I'm getting out it and hope my dribble makes sense as I'm a few drinks deep.

    I think FCD's site description is perfectly accurate when it calls this as a "why didn't I think of it" moment.
    While I respect Roger and Chads perspective on marking a cam pin. My 2cents after seeing functional cam pins on several suppressed short machine guns with 20k plus rds over the years is just inspect it then spend the 8 bucks when it wears out.
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    I've been marking mine with a sharpie. I have yet to see if the mark fades after furring. But if it does, then just wipe of the carbon, oil, grease or whatever and mark it again before dissembly.

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