Homebrew PCBs

The PCBs were clamped under a rail when forced past the milling bit.  Hundreds of thousands were made.  There was a VERY small transformer on the PCB and it became an SMT part.

Bertho

 

From:  Mitch Davis  Sent: Tuesday, February 05, 2013 07:44



On Tue, Feb 5, 2013 at 11:41 PM, Boman33 boman33@... <mailto:boman33%40vinland.com> > 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.



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