Re: Cleaning old Apple II cards?

["John B. Matthews" <nospam@nospam.invalid>]

In article 
<1f128bd0-c26a-42c0-95d5-62bb33e558aa@h26g2000vbr.googlegroups.com>,
 "atfphotography@gmail.com" <atfphotography@gmail.com> wrote:

> On Jun 20, 8:33 pm, "John B. Matthews" <nos...@nospam.invalid> wrote:
> > In article
> > <6a9e3700-5b74-47f8-a2bb-22d2b50a7...@r16g2000vbn.googlegroups.com>,
> >
> >  "atfphotogra...@gmail.com" <atfphotogra...@gmail.com> wrote:
> > > acetone?
> >
> > Definitely no. Acetone is too flammable, too toxic, and too good a
> > solvent. It's altogether too dangerous, unless you're dissolving
> > acetylene or removing nail polish.
> 
> Eeek.

As Mike observed, I see you thought denatured alcohol might be acetone; 
and as larwe points out, denatured alcohol is simply ethanol that's been 
tainted with methanol (typically) to prevent diversion. Having less 
water than over-the-counter isopropanol, it may dry faster.

<http://en.wikipedia.org/wiki/Denatured_alcohol>
 
> Any suggestions then?

I use nothing harsher than the dry brush attachment on my battery- 
operated mini-vac. Then I put the cleaned item in a box and use an 
emulator. :-)

> Thanks for the warning!

I have sometimes been surprised at what acetone dissolves. A plumber's 
spill of PVC adhesive was the most recent. From this I conclude that 
acetone shouldn't be discarded in a PVC drain (or anywhere else for that 
matter).

I smoked during my Apple ][ days, and the high-tension wires inside my 
green & amber screens became coated with beard-like, fractal trellises 
of brown gunk. It's a toss-up which was more toxic: the lead or the 
filth.

-- 
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>