You can get small chucks that fit into a larger chuck that can hold very
small drill (bits).
I know in Australia you can get them from dick smith electronics.

Justin

-----Original Message-----
From: Josh Koffman [mailto:listsjosh@3MTMP.COM]
Sent: Thursday, 9 January 2003 12:29 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [EE]: Drilling PCB holes


Having just started in making my own boards, I bought some of the 1/8"
collet bits at a local surplus store. Using the only drill press I have
available to me (a older table top 1/2" chuck unit), I consistantly
manage to snap about 7-10 bits on a board. So I bought a few of the non
large collet bits for my next board. Question is, how can I chuck them
into such a large unit? I think they'll just slip around in the little
hole left when the chuck is fully closed. I was thinking about widening
the shaft using some tape, but wouldn't that slip?

Josh
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Jinx wrote:
> > The main consequence is that the body of the drill is rather brittle
> > and has been known to snap off under sideways force
>
> I cry like my sister when that happens ;-(((  It's a good idea to have
> as little poking out of the drill chuck as possible

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