Homebrew PCBs

Steve wrote:
> --- In Homebrew_PCBs@yahoogroups.com, Russell Shaw <rjshaw@i...> wrote:
> 
>>Why do you need *any* coating on the pcb?
> 
> Exposed conductors mean they are exposed to humid or dusty air, and
> the surface of the fiberglass substrate will build up contaminants and
> humidity.

You could put the pcb in a sealed container with dry nitrogen
or normal air with moisture-absorbing gel.