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Posted in response to Re: Drilling small polished stones for stringing? from John D Gonzales-Lusk on November 21, 2010 at 15:16:32:

Re: Re: Drilling small polished stones for stringing?

Hi, John, thanks for your response!

I'm using a Dremel, with the stand that you can lower and raise via a hand lever. I do raise and lower while drilling in the water. Not sure what speed I should put it on, but realize that nuclear-fast would get things hotter @ the point of drill. I'd say I drill and lift maybe every 10 or 15 seconds or so, and I don't bear down too heavily, just taking is slow since I don't want to crack the stones.

It's probably the bits. I've purchased those sets of diamond-coated sets, probably 4 or 5 of them at varying grit up to 600. Got them off ebay for maybe 9.99 a set, 25 or so to a set, different shapes.

Do you have a recommendation where to look for better quality bits and when is a bit too expensive? I've also tried the Dremel branded bits, same problem. I'm trying to drill agates, some jasper, odds and ends.

TIA,
Tammis

From Tammis - November 21, 2010 at 17:53:48
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Message: 69546



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