Graphite

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  • NativePaul
    Greased Weasel
    • Feb 2008
    • 2760

    #1

    Graphite

    Hi there, following on from the JB weld thread which brought this up, I have to ask this question.

    I have long wondered about graphite products. Here in the UK graphite products are either pencil "leads" or lubricants, the exceedingly low cohesive strength that makes it good for those purposes would make it terrible for making structural things.

    As a kid I did however have Wilson (an American company) tennis and badminton racquets that had graphite written on them They were lighter than wood or alloy, but much cheaper than European carbon racquets. As what I know as graphite would have snapped at the first stroke I knew it couldn't be the same thing, Graphite is a is a form of carbon, like coal and diamonds are, so I thought maybe Americans called carbon graphite (like calling their liquid petroleum fuel "gas", instead of petrol), but once the internet came out I found that Americans call carbon fibre carbon fiber, which put that theory to bed.

    I did break one and it was black inside, but not fibrous or stranded as proper carbon fibre is, and solid, not hollow molded, it was solid and had granular structure like a Graupner carbon prop indicating that it was injection moulded CRP explaining the large price difference between it and carbon fibre raquets. My theory is now that Americans call injection moldable powdered or extremely short strand CRP graphite instead of CRP. Can anyone confirm or deny this.
    Paul Upton-Taylor, Greased Weasel Racing.
  • T.S.Davis
    Fast Electric Addict!
    • Oct 2009
    • 6220

    #2
    I'm not sure about the common nomenclature but I do use graphite powder sometimes. I mix it in with West Systems. Tough as nails. Much much tougher than micro balloons or milled fiber.

    I also use aluminum powder on occasion. Repaired a transmission case on a Ram 2500 with that.
    Noisy person

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    • boredom.is.me
      Senior Member
      • Jun 2009
      • 595

      #3
      What is officially known as graphite would indeed be "lead" and dry lubricants. And although it is carbon based, I'm not sure exactly how it crossed over to representing carbon.

      As for the strength, I collect carbon dust from my own CNC machining. I mainly use it as a coloring agent, but I highly doubt it negatively affects the epoxy. I also do the same with aluminum. A minuscule amount of super fine shavings mixed in with the carbon really gives a nice black sparkle effect.

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      • grsboats
        Senior Member
        • Jul 2012
        • 975

        #4
        I also like to use carbon powder from my sandings to add to epoxy glue with no issues.
        GO FAST AND TURN RIGHT !
        www.grsboats.com.br

        Comment

        • runzwithsizorz
          Senior Member
          • Jan 2009
          • 896

          #5
          My neighbor gave me over 2 yards of cloth/fabric he had left over from making a small sail boat. The label on the package said graphite. It had black fibrous strands interwoven with white fiberglass ones. I figured it would be about the same as carbon cloth so I lined one of my boats with it. Once epoxied, it looks the same. I really do not know the difference (?).

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