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Subject: Re: [Homebrew_PCBs] Re: PCB Driller

From: Philip Pemberton <philpem@...>
Date: 2004-11-17

In message <cngfrj+53tr@...>
"cybermace5" <cybermace5@...> wrote:

> A Dremel press works, though you really need to make sure your rotary
> tool has good bearings up front. Any wobbling or vibration will
> eventually snap a drill.

Don't I know it... I've got an Expo Reliant Minidrill. It's not too bad, but
the bearings are lousy. If you run it at any speed, you can see the
unevenness in its motion - the drill bit seems to "bob" from side to side.
This in turn causes the bit to vibrate, then the drill and stand, then you
get a horrible noise as the stand starts resonating, then finally.. boom.

I really need a new drill - anyone got any suggestions? I'm thinking about
getting an Expo Zircon primarily because I've already got a stand that fits
it. The specs are on <http://www.expotools.com/> (IIRC) if anyone's
interested.

> Of course you can be like me, and build a little
> CNC drill, but after putting in the required materials, funds, and
> time a $150 tool seems like a great deal.

I was going to build a CNC myself, but getting the parts seems to be the hard
bit.. that and actually designing the thing.

Later.
--
Phil. | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB,
philpem@... | ViewFinder, 10BaseT Ethernet, 2-slice,
http://www.philpem.me.uk/ | 48xCD, ARCINv6c IDE, SCSI
... NetWare does not have bugs, it has "Undocumented enhancements"