Greetings gents!
Many thanks to those who commented about cleaning variable
capacitor plates.
Upon closer inspection, the plates are pitted...looks
like a moonscape up close. So per the many suggestions,
I will first mechanically remove the edges of the "craters",
probably with a very fine sandpaper with and oil or water,
then polish all the plates with some of the "blue stuff" cleaner
using a low speed "cotton wheel"....and avoid creating any
sharp edges on the plates in the process. (BTW, if one were
to try this too, wear a face mask to filter out the cotton
fibers.)
One very interesting bit of info was received on how USA
manufacturers polish the plates and round the edges by using
a mixture of walnut shells in a tumbler. Now if a guy had a
jeweller's "rock tumbler" and the right polishing compound (like
some crushed walnut shells) that would be interesting to try!
Gees, we hams do a lot of work just to "save" a few bucks! hi hi
73,
Charlie, N0TT
On Sun, 21 Oct 2001 04:21:39 -0700 n0tt1@juno.com writes:
>
> Greeting gents,
>
> I bought a large variable capacitor for at a hamfest recently and
> the plates are somewhat corroded....something I knew about
> before I bought it for practically nothing. I have taken
> the unit apart, individual plates and all.
>
> What's the best way to clean the corrosion off the plates?
>
> 73,
> Charlie, N0TT
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