Homebrew PCBs

Check into the wetting or cleaning agents for contact lenses.  Being 
that they are plastic, they need some sort of chemical on them to 
keep them wet and lubricated.  About 40 years ago, when I first 
tried contacts, I remember the eye doctor explaining this to me - so 
if I am a bit confused, I blame it on a foggy memory ;-)



--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan" 
<stefan_trethan@...> wrote:
>
> I will visit the chemicals shop tomorrow, and i'd like to prepare 
for  
> future wetting agent/break fluid experiments.
> They have a whole host of glycols, which i think are the most 
likely thing  
> to try. After some research propylene glycol seems the least 
dangerous  
> (most others have Xn rating wich i'd rather avoid).
> The information i find about wetting and stuff is confusing and  
> inconclusive, but not much different from the other glycols. It 
should  
> just boil off during curing with 188C boiling point.
> 
> Any ideas/suggestions/recommendations?
> 
> ST
>