Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan 
<stefan_trethan@g...> wrote:
> On Thu, 06 May 2004 15:42:48 -0000, javaguy11111 
<javaguy11111@y...> 
> wrote:
> 
> > If you see solder paste under a microscope it a bunch of
> > solder balls a few thousands of an inch in size.
> > My guess for needing the refrigeration is to keep flux viscous 
enough
> > to keep the solder balls from settling and squeezing out the flux
> > in between.
> >
> 
> 
> seems to make sense...
> 
> Do you think it would be possible to see if a paste is good or bad?
> 
> ST

I'm not entirely sure the paste actually goes bad.  I think the gel 
part gets thicker and it is just harder to spread.

the real test is to heat it and see if it solders properly.

Dave