Re: gEDA-user: Isopropyl alcohol vs. ethanol

[Gene Heskett <gene.heskett@xxxxxxxxxxx>]

On Tuesday 25 April 2006 06:18, Jose, Marshall wrote:
>-----Original Message-----
>From: owner-geda-user@xxxxxxxx on behalf of Karel Kulhavy
>Sent: Tue 4/25/2006 3:30 AM
>To: geda-user@xxxxxxxx
>Subject: Re: gEDA-user: Isopropyl alcohol vs. ethanol
>
>>> solvents...). Wtth that said, we use water soluable solder.
>>> It's easier to work with and is more people/environmental friendly.
>>> Just
>>
>>So pines are not environmentally friendly because they secrete
>> abietic acid? Something doesn't sum up here.
>
>He's referring to the solvents required to remove rosin flux, chief
> among them trichloroethylene (TCE), which readily mixes with water
> and is carcinogenic.

I've used a few gallons of TCE in my time, but after the horror stories 
started to surface, the last time was probably 45 years ago.  We used 
to use it to clean volume controls and such back in the 40's & 50's. 
But by the turn to 60's even  the Air Force (I was a civilian 
contractor at Ellsworth the time) made us take it outside before we 
could crack the can lid.  Nasty stuff, that and MEK both.  Alky might 
be slower by half, but it works just fine.  Just make sure you never 
put the dirty q-tip back in the can, get a new one for each dip.  
q-tips are cheap, I get mine from a company called sherwood, who sells 
a single ended one on about a 6 inch wood stick from the druggist, 
about $8 a thousand the last time I bought a box about 4 years back.  
Now retired for the most part, that was probably the last box I'll buy.


>Marshall

-- 
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