On 1/15/12 2:50 PM, Sean Voisen wrote:
Hello all,
Not exactly 100% on-topic, but I'm curious if those of you building
clocks on PCBs are cleaning your boards after soldering, and if so
what you're using to do so. I've been using 91% isopropyl alcohol and
an old stiff toothbrush with mixed results. Mostly - especially with
so-called "no clean" flux - it leaves a white residue that I then I
have to wash off with running or distilled water. It works, but it's a
slow and imperfect process. I'd like something better.
Perhaps I need to try to find 99% IPA (not sure it will make much
difference) or change flux ...
Cheers,
Sean
Sean,
I use solder with organic flux, which is water-soluble. Then I wash it
in hot running water and blow dry with compressed air. It gets perfectly
clean.
You can buy liquid flux of this type also, which makes soldering of
small surface-mount parts quite easy.
The big caveat here is that you MUST wash off the flux within a day, or
it will begin to corrode the circuit board and make conductive paths
where you don't want them.
--
David Forbes, Tucson AZ
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