[Elecraft] KSYN3A mod problem

[ae4pb at carolinaheli.com]

When you purchase alcohol to use as cleanup it's best to get the highest
concentration you can get, else, there is a risk of it leaving a residue and
the evaporation rate is much slower. Most drug stores sell 91% or higher if
you ask/look for it. 60% is more common. Higher % is better for cleaning and
evaporates more cleanly.
Jer


-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Ian
White
Sent: Tuesday, September 08, 2015 4:09 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] KSYN3A mod problem

>Don:
>Acetone should NEVER be used in electronic assembles. Acetone causes 
>both long and short term effects on various components including the 
>PCB. It effects epoxy, lacquers, paints, and plastics, particularly 
>polystyrenes
[...]
>73, Fred, AE6QL

Chemicals intended for use around electronic components, including PC
boards, have been formulated according to an industry-wide "Non Aggression
Agreement". This aims to ensure that chemicals such as flux cleaners and
contact cleaners will not damage the plastics that are used in the majority
of components. In return, component manufacturers try to avoid using
plastics that would be damaged by solvents in common use. 

Undiluted acetone is not part of that agreement because it's simply too
aggressive, as Fred describes. 

Although electronics-grade solvents are more expensive than bulk commodity
solvents like acetone, for peace of mind they are worth the extra cost.


73 from Ian GM3SEK


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