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Subject: Re: [Homebrew_PCBs] dental handpieces for copper clad drilling

From: Mitch Davis <mjd@...>
Date: 2013-02-05

On Tue, Feb 5, 2013 at 11:41 PM, Boman33 <boman33@...> wrote:
>
> A lot of years ago I used the turbine from a dental handpiece and diamond
> tipped burs to build a microscopic sized custom milling machine to mill the
> outside edges of PCB. The PCBs where only 3x3mm (yes, mm) and only 0.2mm

I'm curious, how did you hold the PCBs down?

Mitch.