How to clean up tube shields?

[Jim Berry]

Hello Michael,

I wonder if a "chrome cleaner" of some kind would work.  That is the
stuff you can get at an auto parts place for cleaning the rust off
from bumpers.  I kind of think the stuff is an abrasive of some kind,
with a oil like carrier.  I do know it says to shake well, since the
polishing compound will sink to the bottom.  Even though it is made
for brass, have you tried "Brasso" yet?  It just might cut the baked
on crude on those tube shields.

I have in the past run into a similar problem.  Since I was into just
improving the radio, and not really restoring it, I have used a high
temperature flat black paint on tube shields.

73 Jim K7SLI

> Subject: How to clean up tube shields?
>
>
> I have two types of tube shields in several of the radios
> I'm rehabing.  One type is aluminum and
> cleans up fine with aluminum polish.  The other type are
> badly corroded and don't respond to
> aluminum polish or anything else I've tried.  What's the
> magic chemical and what are they made out
> of?
>
> Thanks,
> Michael
>

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