Homebrew PCBs

> BillC wrote:
> I have a CNC machine, and the idea of
> leaving it unattended .... no.
>

Is that a CNC milling machine for
cutting big hunks of metal - or one for
cutting little bits of GRP and copper ?

I would not leave a CNC milling machine
unattended.  However the companies that
sell some of the PCB mills list that
as one of the points about having them.