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Diamond Drill Bit Question

  1. Dec 24, 2008 #1


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    Does anyone know how the diamonds in a diamond drill bit are attached to the drill? I tried google but didn't find much help regarding this question. I did find a picture of a diamond tipped drill:


    But no explanation of how the diamonds are made to stick to the drill. Or how the drill is made. Anyone have a detailed (or not so detailed) explanation of how this works?


  2. jcsd
  3. Dec 24, 2008 #2
    Manufacturers usually come up with some proprietary name for their process (for trademark), but in my experience, sintering and electroplating are the most common methods.
  4. Dec 24, 2008 #3
    Often the diamonds are powdered and included with sintered or powdered metal.
  5. Dec 25, 2008 #4


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    Thanks for the answer.

    Could you say a little more about how electroplating works with diamond? The examples that I have seen of electroplating usually involve plating one metal with another metal. Is it a standard process to plate metal with non-metal?

    For diamonds, does the electroplating process work by first putting a charge on nano-sized diamond clusters and then using a current to deposit the clusters on the metal, or some other way? Thanks,

  6. Dec 25, 2008 #5
    Just a guess, but I think sputtering or electroplating would be the method to build-up the matrix around the dimond powder once it was attached.
  7. Dec 25, 2008 #6


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  8. Dec 25, 2008 #7
    Last edited by a moderator: Apr 24, 2017
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