[Jewelry making - Article 00247] - Re: [Orchid] Drilling a hole in gold

[Dale Porter]

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    Burs are inefficient in drilling holes. A standard style twist drill
    bit is a better option to make the first hole at least. Then
    gradually use larger drill bits or even burs to make the hole the
    size you want. 

    A good tip is to drill a little bit, then withdraw to clear out the
    shavings, then drill a little bit more, withdraw, etc....until you've
    drilled all the way through. This helps prevent the drill bit from
    catching or "binding" in the hole, and also helps keep it cool.
    Forcing through in too big a hit will run the risk of the drill bit
    breaking off inside the hole, and that's a pain in the proverbial. 

Cheers,
Dale

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