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Thread: ELECTRICAL Conductivity Help

  1. #1 ELECTRICAL Conductivity Help 
    Forum Freshman JohnTheGr8's Avatar
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    Ok i am starting on my next custom computer case since I'm bored and i have a little money i can use.

    I am making the case completely out of carbon fiber or aramid fiber, i know carbon fiber is a great conductor but I'm not sure about aramid.

    any ways i need to find away to insulate the inside of the case so it doesn't conduct electricity all throughout the case. I though some pvc sheeting might work if i used it on the inside of the panels.

    I am also not sure if the fibers are conductive when they are coated with the enamel or sealer.

    Please help me

    thanks
    John


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  3. #2  
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    Can you explain why you are concerned about the conductivity of the case? Unless the case comes in contact with a power source it would not matter, would it? You won't be touching any energized bare wires, will you? I am not an expert in making computer cases. Maybe there is a reason, just asking.

    If I was to guess, I would think you'd want a conductive case, if anything, to help drain off any static charge.

    My desktop computer has a metal case. That does not seem to cause a problem.

    If you want to test the conductivity of the material you are using, just check it with an ohmmeter.


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  4. #3  
    Forum Freshman JohnTheGr8's Avatar
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    thats true but im not sure about it because the motherboard has some stuff on the back i thought it would cause a problem but i might just check to see if it works.

    I have seen forums where people have tried it and for some reason it didn't work well and i didn't want to waste money on alot of carbon fiber
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  5. #4  
    Forum Freshman spirytus's Avatar
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    A PC case usually is conductive, as are most electronic cases. If it's been designed properly, it should be grounded via your power supply case (which in it self should be grounded).

    Just make sure when you install your mother board (or any other circuit board), its conductive-paths/solder-nodes are not touching the case. Your mother board should be raised on 1cm raisers and mounted with screws through specifically designated mounting holes. Don't drill your own holes, or use clamps/brackets of any sort.

    Also make sure there's a conductive path between your custom case and the power supply case (they should touch).

    You may also choose to use none conductive washers between the board and the mounting screws, but these are usually unnecessary if you use proper screws.

    Hope that helps.
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  6. #5  
    Forum Freshman JohnTheGr8's Avatar
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    thanks, that helps me out a lot
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  7. #6  
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    Hmm, guess I misunderstood the question. I thought you were making a carrying case for a laptop computer.
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  8. #7 Re: ELECTRICAL Conductivity Help 
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    Quote Originally Posted by JohnTheGr8
    Ok i am starting on my next custom computer case since I'm bored and i have a little money i can use.

    I am making the case completely out of carbon fiber or aramid fiber, i know carbon fiber is a great conductor but I'm not sure about aramid.

    any ways i need to find away to insulate the inside of the case so it doesn't conduct electricity all throughout the case. I though some pvc sheeting might work if i used it on the inside of the panels.

    I am also not sure if the fibers are conductive when they are coated with the enamel or sealer.

    Please help me

    thanks
    John
    John, there's also something very important that you should keep in mind. There's a very good reason that most computer enclosures are made of metal - it's to reduce electronic inteference. Not only for the computer itself but more importantly for any nearby electronic devices.
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