[Elecraft] K2 Cleaning PCB

Sat May 17 11:25:11 2003

Rick
The best approach is a preventive one.
Use a small diameter solder with internal flux.
Use the least amount of solder that will do 
the job.  You will find very little flux
remaining, and it isn't worth the bother of
trying to remove.  It has no effect on the
operation of the radio.
73, Bob N6WG

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of rick jones
Sent: Saturday, May 17, 2003 6:46 AM
To: [email protected]
Subject: [Elecraft] K2 Cleaning PCB

Hi all,

I'm about to start in on my RF board.  There are a lot
of references to flux removal but I don't know what
the prevailing opinion is on the subject. Perhaps a
poll on how many attempted flux removal during the
building process? At NASA soldering class we were
taught to clean everything with pure alcohol (and only
pure alcohol) and a stiff acid brush. Sometimes the
final board would be immersed in an alcohol
bath/ultrasonic cleaner for final cleaning. I don't
think a K2 has been launched to deep space yet so the
standards don't have to be so rigorous! If nothing
else a flux-free PCB sure looks better IMO! So should
I bother or do the risks out way the rewards in this
case.

Thanks 
Rick N3IKQ  K2 #3465 

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