Homebrew PCBs

On Fri, 01 Dec 2006 17:52:30 +0100, AnaLog Services, Inc.  
<wireline@...> wrote:

> Many thanks to Stefan for making me examine an incorrect belief I have  
> long
> held about Ethanol.  I have revised my pages on Ethanol as a cleaner, and
> added a page on the formulas used here in the US.  It would be  
> interesting
> to know the actual formula for the denatured alcohol that Stefan is  
> using.
> Clearly the stuff sold as denatured alcohol here in the US is nasty  
> stuff,
> and it will definitely attack ABS.  True PGA is next to harmless on ABS.
> http://www.logwell.com/tech/servtips/cleaning.html
> http://www.logwell.com/tech/servtips/CDA_formulas.html
> Syd H. Levine
> AnaLog Services, Inc.
> Phone:  (270) 276-5671
> Telefax:  (270) 276-5588
> E-mail:  analog@...
> Web URL:  www.logwell.com


I'm also glad the mystery is solved, i was starting to believe some people  
must have been drinking the ethanol when it attacked their plastics, but  
you guys are not crazy after all, it is just your suppliers mixing nasty  
stuff in there rendering it useless.

I will pester the chemicals shop people until they surrender either the  
name of the supplier or the denaturing agent, i promise. But i will have  
to wait until i need to make a purchase, to aid in loosening their tongue.  
They dispense all chemicals in the shop from larger tanks so i do not know  
what manufacturer it comes from. It may even be different from the usual  
stuff that you get in DIY stores.
I have used denatured ethanol in a tin can from a paint manufacturer  
before, and it was the same on plastic. But i can't find a MSDS for that  
brand.

ST