[Boatanchors] cleaning ceramic?

[J. Forster]

A file is USELESS. The ceramic is MUCH harder than the file. The Dremel is
depositing metal on the ceramic.

Is it glazed or unglazed? If glazed, try Fantastik on a toothbrush then rinse
several times with distilled water. DON't try that if unglazed because of
electrical leakage. As a LAST resort, try some dilute acid
(Hydrochloric/Muriatic) on a Q-Tip, then rinse as before.

-John



StephenTetorka at cs.com wrote:

> Hi all:
>
> I'm having no success cleaning my vintage ceramic rotary switches.
>
> It seems that whatever I do...they get dirtier..a kinda rubbed-in dark burnt
> look..esp. when I try a wire brush and my Dremel.
>
> Even tried a file...NG.
>
> Can it be done?
>
> Tnx,
> Steve
> WA2TAK
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