<html><head><meta http-equiv="content-type" content="text/html; charset=us-ascii"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Does polishing cream actually improve conductivity by removing oxide build up?<div>It's not something I've ever used.<br><div><br></div><div>A<br id="lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On 29 Apr 2026, at 15:19, Maarten via Synth-diy <synth-diy@synth-diy.org> wrote:</div><br class="Apple-interchange-newline"><div>
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<div><p>I would not advise to use sand paper at all. You better use some
polishing paste with a very small grain. </p>
<div class="moz-cite-prefix">Op 29-4-2026 om 01:30 schreef Adam
(synthDIY):<br>
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I tackled this a few years ago, HTH
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<div style="display: block;">A</div>
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<div>On 28 Apr 2026, at 21:53, <a class="moz-txt-link-abbreviated" href="mailto:rburnett@richieburnett.co.uk">rburnett@richieburnett.co.uk</a>
wrote:</div>
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<div>Can anyone recommend a good process for cleaning dust
our of slide potentiometers on an old Roland SH-09?<br>
<br>
The synth was stored underneath a bed in the spare room
when we moved house about ten years ago, and I *thought*
it had a dust cover over it! It turns out it didn't
(>.<) and the slide pots are in quite bad shape
now.<br>
<br>
The synth is functional but the sliders feel scratchy
and there is obviously intermittent electrical contact
because cutoff, LFO rate, etc jump around a lot when the
sliders are adjusted. The slide switches are okay, and
the keys aren't too bad after a bit of use.<br>
<br>
I've removed the front panel and also found that there
is some sort of black felt/foam sheet that was obviously
originally meant to be a dust shield for the slide pots.
The problem is that this material has become brittle
and literally crumbles upon touching. Can anyone
recommend a good material to replace this with?<br>
<br>
If I can fix the pots with a squirt of some magic spray
that would be fantastic, but I'm also prepared to
de-solder then and carefully open them up for cleaning
if that is what is required. I would rather take time
to do the job properly, but not sure what is the best
way to proceed? I have access to a dry compressed-air
line, dish soap, cotton buds, Isopropyl alcohol,
acetone, silicone grease, soldering/de-soldering tools,
etc, but don't want to risk making the problem worse
without asking for advice first.<br>
<br>
Thanks in advance for any advice,<br>
<br>
-Richie,<br>
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