Homebrew PCBs

-Please- do -not- start a new thread by responding to an old one. Even
after you change the subject line and delete all visible traces of the
original message, Yahoogroups links it into the old thread.

Thanks,
Steve Greenfield
listowner Homebrew_PCBs

--- In Homebrew_PCBs@yahoogroups.com, Cristian <bip@...> wrote:
>
> Hi List
> Do you know a solution to invert the polarity (from positive to 
> negative) of a Gerber generated file of a  PCB layer,
> independently of any PCB program?
> Cristian
>