The dremel brand drill presses tend to have a lot of slop. Their most recent
one was 90% plastic and was even worse than past ones, but has since been
recalled thanks to complaints (including mine). Once again, I recommend the
minicraft press attachment I linked earlier, it's pretty much entirely made
of metal so it doesn't have nearly as much play. Your ability to hold the
board securely while drilling is the real factor in whether you break bits
with that press.
-Evan
On 12/11/05, soffee83 <soffee83@...> wrote:
>
> --- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
> <stefan_trethan@g...> wrote:
> > You should run carbide drills quite fast. 30000 RPM is not too fast
> >for them. A regular drill press is on the slow side
>
> I had wondered about that too. I had always related PCB stuff as
> similar to metals, where you wanted more cutting and waste removal and
> less heat/friction.
>
> I may look into a Dremel press. My Delta is supposed to serve
> woodworking duties and it's never around for that lately.
>
> The runout and precision could be an issue too, but I've been lucky to
> usually have a clean etched pad/hole to keep the bit centered. That
> was one of the things that scared me away from a Dremel-press rig. I
> had always assumed that the parts would have even more play in them.
>
> Take Care
>
> -George
>
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