[sdiy] Cleaning scratchy pots

Neil Johnson neil.johnson71 at gmail.com
Mon Mar 30 11:31:45 CEST 2020

In the UK denatured alcohol is called Methylated Spirits, or "Meths"
for short, and dyed purple.

I have never seen meths anywhere in electronics development or
production areas.  But IPA - lots of it (especially since trich was


On Mon, 30 Mar 2020 at 10:12, Michael Zacherl <sdiy-mz01 at blauwurf.info> wrote:
> > On 30.03.2020, at 10:28, Florian Anwander <fanwander at mnet-online.de> wrote:
> >
> > Hi Michael
> >
> > Am 30.03.20 um 05:12 schrieb Michael E Caloroso:
> >> Isopropyl alcohol leaves behind a film so they did not give you the
> >> best answer. Denatured alcohol is better.
> > I think you mismatch those two types of alcohol:
> >
> > Isopropyl is CH3 OH CH3, which is not usable for making drinks (doesn't taste well by nature)
> > Ethyl is CH3 CH2 OH, which would be quite tasty for those who are addicted. Because of that it is mixed with extreme bitter tasting addons. That is called "denatured alcohol". These addons are the "film" that is left on potentiometers.
> >
> > So: avoid denatured alcohol, use isopropyl.
> seconded! IPA is/was used for cleaning tape heads, for instance. Would be a no-go if there was residue!
> m.
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