[sdiy] Ultrasonic cleaning solutions

[Andrei Kudryavtsev]

I'd like to share some experiences using SWAS. Clearly, it's working.
I pre-heated it at 45C as recommended by the datasheet and ran for 5
minutes. All flux has been removed. I should be very happy, but one thing
that concerns me, that the solder lost his shine. Next time I'll reduce the
time down to 3 minutes and see the result. The matte solder is not from the
drying process or some residue left during washing, it became like that
during ultrasonic cleaning.

p.s. Anybody else noticed how similar it looks and smells to Windex? :)


On Fri, Sep 29, 2023 at 3:21 AM Roman Sowa <modular at go2.pl> wrote:

> DON'T wash any potentiometers in anything, unless the potentiometer is
> sealed model as explicitly described in datasheet that is "sealed" and
> safe for washing.
> There's no practical way of washing only part of the board leaving some
> sensitive parts above fluid level.
>
> Roman
>
> W dniu 2023-09-28 o 19:14, Jesse Weideman pisze:
> > Is this stuff OK to use with pots, or can you submerge just the board &
> > pot legs while leaving the shaft & body out of the solution?
> >
> > Would assume it'd eat all the lubrication at minimum and most of our
> > annoying looking flux is after we've mounted mechanicals, curious if
> > there's a way around that
> >
> > Cheers,
> > Jesse
> >
> > On Thu, Sep 28, 2023, 7:48 AM Roman Sowa <modular at go2.pl
> > <mailto:modular at go2.pl>> wrote:
> >
> >     Electrolube SWAS.
> >
> >     Water based, smells nice (if you like that kind of smell) and does
> >     marvelous job. It can be dirty as hen house floor and still does its
> >     magic. Unlike IPA, which only takes one drop of dirt in 5L tank to
> make
> >     it unuseable.
> >     I change mine only every couple of years.
> >
> >     Roman
> >
> >     W dniu 2023-09-28 o 10:00, Andrei Kudryavtsev via Synth-diy pisze:
> >      > Hi All,
> >      > I have PCBs with SMD and TH parts, and also with plastic
> >     connectors. SMD
> >      > parts are machine soldered, TH components are manually installed.
> >      > Obviously some flux residue is visible from manual soldering.
> >      > I have a 22L ultrasonic cleaner with a temperature control.
> >      > The boards are quite large, like 100x250mm or so.
> >      > Wondering if you can share some experience using an ultrasonic
> >     cleaner
> >      > to avoid solvent based sprays and mechanical cleaning.
> >      > There are some threads of using IPA inside small zip lock bags to
> >     avoid
> >      > evaporation, which seems to work well for small boards and is
> >     relatively
> >      > safe. However it's not my option due to the board size.
> >      > I also see some "ultrasonic flux remover" detergents on eBay, but
> >     for
> >      > some reason they are all in the UK.
> >      > Also I found the specialized Flux Off by Chemtronics but have
> never
> >      > tried it.
> >      > Please, suggest.
> >      >
> >      > --
> >      > Andrei Kudryavtsev,
> >      >
> >      > My last album *Two Match - The 1st Fill* on iTunes
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-- 
Andrei Kudryavtsev,

My last album *Two Match - The 1st Fill* on iTunes
<http://itunes.apple.com/us/album/the-1st-fill/id1241529125> and Spotify
<https://open.spotify.com/album/4aM8DzmN5yi4ho1gcmC8ls>
Follow me on Facebook <https://www.facebook.com/andrei.kudryavtsev.5>,
Instagram <https://www.instagram.com/deftaudio/>

Music technologies by
Deftaudio www.tindie.com/stores/Deftaudio
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