--- In Homebrew_PCBs@yahoogroups.com, Russell Shaw <rjshaw@i...> wrote:
the surface of the fiberglass substrate will build up contaminants and
humidity.
Steve
> 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.
Steve