Safe way to remove excess flux?

[jrb-3]

Can any of you folks recommend a safe way to remove excess flux from  
a PCB?

TIA,

Jeff
KG6ZVT
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[Rod N0RC]

Jeff,

Isopropanol, denatured isopropyl alcohol works great, available from
Techspray, www.techspray.com, via Mouser/Digikey/Jameco (can't recall
where I got it last). Or, try the 90% solution rubbing alcohol, ~$1/pt
at WalMart.

--
73, Rod N0RC

On 11/19/2005 11:59 AM, jrb said the following:
 >
 > Can any of you folks recommend a safe way to remove excess flux from
a PCB?
...
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[Paul Saville-4]

Use 100% Isopropanol (Isopropyl Alcohol). Get a 1/2 inch
paint brush, the sort you would use for trimming around
window frames etc, and cut the bristles back to about half
length to stiffen it up a bit. Dip the brush in the alcohol
then scrub a small area of the circuit board for about 20
seconds, then dab dry with an absorbent cloth. I have never
damaged any boards this way, but it's not particularly
"safe" because Isopropanol is highly flammable, so do it
outside and away from sources of ignition. Also the chaps at
Elecraft don't approve of cleaning boards at all, but I
won't tell if you don't.

73 Paul ZL3IN


> Can any of you folks recommend a safe way to remove
> excess flux from a PCB?

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[Ray / SM0XLP]

Hi Jeff,

I have always used the Prozone pen from the manufacturers of the Mulicore
solder company. The pen contains flux solvent in an easily applicable
felt-tip dispenser. Ideal for small areas.

Whilst on the subject of soldering topics, I would also like to say that the
same company sells something called 'TTC' - Tip Tinner & Cleaner which is a
great way to both clean the tip of a soldering iron and tin prior to a new
operation. This comes in a small tin, about 1/2 ounce. I have used this to
make two complete K2 with all options and have used about one third of the
tin.

Of course, (apart from having used Multicore for about fifty years as a
customer), I have no commercial interest.

73,

Ray / SM0XLP

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Can any of you folks recommend a safe way to remove excess flux from  
a PCB?

TIA,

Jeff
KG6ZVT
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