I use a a Dremel type tool with small bits like you describe. Set the bit as
far into the chuck as you can. Start slow until the bit begins to cut, then
increase your speed. When you begin to apply pressure with the drill, watch the
drill bit for any bend. If the bit bends while drilling, relax your pressure on
the tool. Use cutting oils that are appropriate for the material that you are
drilling. Lots of oil. Yes, as mentioned, forget about sharpening the bits,
they are far too small to sharpen.
I learned to drill from a clock and watch repairman. Buy plenty of bits, take
your time and watch for any bend in the bit. They break easily and usually
leave their broken bits deep in the hole you are trying to create. Always wear
safety glasses, I usually wear my dime store reading glasses so that I can see
the small stuff.
Dale Krumheuer
Cleveland OH
drmayf <drmayf@mayfco.com> wrote: Other than very carefully, how does one go
about drilling very small
holes, holes on the order of 0.020 - 0.040 diameter? How do you chuck
something that small? And I suspect that sharpening drills that small is
not gonna happen. Can hardly see drill bits that small..
I would be drilling in aluminum.
mayf
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