Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "Steve" <alienrelics@y...> wrote:
>
> --- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
> <stefan_trethan@g...> wrote:
> >
> > Alan,
> > 
> > as i said it is mainly colophony resin (the same flux used in many
> solder  
> > wires) and alcohol.
> 
> A quick Google shows that Colophony resin is pine sap, or based on it.
> Collected when they are harvesting turpentine from pine trees:
> http://www.herbdatanz.com/offical_volatile_oils_bp.htm
> http://www.polymetaal.nl/beguin/mapg/gums_and_resins.htm
> 
> I also see some indications that breathing it is not good for you long
> term. I know, I know, that fits a lot of things.
>
<http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=1016290&dopt=Abstract>
> 
> So it looks like it should be easy to find now that you know. Used in
> woodworking so look for specialty wood stores and in art so check art
> stores. Apparently rosin for violin bows, although I'd expect this to
> be one of the most expensive sources.
> 
> Steve Greenfield
>
Great links!   Thanks, Steve.

Alan