Homebrew PCBs

On 1/15/2013 12:10 PM, Mars Bonfire wrote:
>
> I believe plumber's flux is typically based on zinc chloride. I always 
> have to laugh when I pick up my tin of it from my plumbing kit and the 
> can is labelled "no-corrode" and the can is almost rusted out(!). 
> Bottom line: if you use a "no corrode" plumber's flux, clean, clean, 
> clean...
>
> --- In Homebrew_PCBs@yahoogroups.com 
> <mailto:Homebrew_PCBs%40yahoogroups.com>, "Rick Sparber" wrote:
> >
> > Wanliker,
> >
> > So if I then scrub the coated board with
> > alcohol to remove the flux, wouldn't that be the end of it?
> >
> >
>
The plumber's flux is cleaned with water (and scrubbing!).  I don't 
think alcohol will touch it.  On the other hand, alcohol is required for 
rosin flux.  Best and safest bet is to use ONLY rosin core for 
electronics.  Rosin will also work for plumbing - just not as aggressive 
- but then I don't know about the rosin in contact with drinking water.  
The normal water flow removes the acid flux in plumbing pipes - and any 
residual chlorine should kill bad bugs in the water ;-) .

Norm
W6NIM


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