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What paint is this on the charger pulley?

Discussion in 'Performance and Tuning' started by 6xchamps, Sep 21, 2015.

  1. Sep 21, 2015 at 6:44 AM
    #1
    6xchamps

    6xchamps [OP] Well-Known Member

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    What is this stuff?

    0920151250.jpg
     
  2. Sep 21, 2015 at 6:50 AM
    #2
    Enigma8246

    Enigma8246 Well-Known Member

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    These are marks used by a mechanic or machinist to know when something has moved. They're called witness marks and can be found on some factory parts, a lot of remanufactured parts (for testing) and sometimes firearms.
     
  3. Sep 21, 2015 at 6:54 AM
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    6xchamps

    6xchamps [OP] Well-Known Member

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    Yeah, anyone know what kind?
     
  4. Sep 21, 2015 at 7:02 AM
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    Enigma8246

    Enigma8246 Well-Known Member

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    Different people use different things from sharpies to paint pens to nail polish. There are some products made specifically for this but I don't know of any off the top of my head.

    A friend of mine who is a mechanic/machinist at a factory says they will usually triple check that something is torqued properly, then use a scribe to mark the metal. This good because it's permanent but can also be a problem if something changes which can change the torque. So if a bushing starts to wear and results in the screw being in the same position but not the proper torque, you then have to re-torque and your scribe mark is off. It just depends on what you're marking.
     
  5. Sep 21, 2015 at 7:26 AM
    #5
    Kbel

    Kbel Well-Known Member

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    6xchamps [OP] and Biscuits like this.
  6. Sep 23, 2015 at 11:53 PM
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    Biscuits

    Biscuits Thorny Crown of Entropy

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    Swiggity swangin' biggity bangin'
  7. Sep 24, 2015 at 12:45 AM
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    6xchamps

    6xchamps [OP] Well-Known Member

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