Oh, it's Rosin! That is interesting. I will have to find some and
give it a try. Being a natural product, I suspect it shouldn't be
too hard to find (and have shipped).
Thanks!
Chris
--- In
Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@g...> wrote:
>
> On Tue, 25 Oct 2005 22:42:12 +0200, lcdpublishing
> <lcdpublishing@y...> wrote:
>
> > Okay, that's a new one for me... Colophony Resin?
> > What is that stuff and where can you get it? I am willing to give
> > just about anything a try - this if fun....
> > Till, see my newest post about fixing traces
> > Chris
>
>
> It's resin, from trees like pine, with the turpentine removed.
>
> <http://en.wikipedia.org/wiki/Colophony>
>
> It's widely used as soldering flux, and can be left on the PCB
especially
> if there are no special requirements for extreme isolation
resistance
> etc.. It is not active (not etching the copper) when cold.
>
> If you get chunks of it you can solve it in alcohol and paint it
on, or
> you can buy spraycans where it's already mixed.
>
> It is important to note that there are wide color/quality
variations, from
> almost black to almost like glass. If it is used as flux and
should remain
> on the PCB the light colored qualities are preferrable.
>
> It's also useful as a general purpose brush-on flux.
>
> ST
>