On Tue, 08 Nov 2005 06:23:49 +0100, <
JanRwl@...> wrote:
>
> it makes no sense to coat the PCBs with something that prevents coating
> with
> resist, intentionally or by accident. The manufacturer could not sell
> the
> material so he can not produce it. If it was coated with some "mystery
> material" it must have been by accident later on, or maybe a silly
> person
> "preventing corrosion".<<
> ST! SURE it makes sense! An "invisible" goop that keeps the fresh
> copper
> bright is a "sales tool", of course! The USERS must realize this must
> be
> scrubbed off before resist-application!
But surely, if they put some protection on (and they seem to do on my
boards) it must be something that is easily cleaned off, NOT silicone
grease!
ST