> But it really seems to matter why aluminum is an issue.  If it's an
> integrity issue then you should definitely throw some padding.  It might
> just be a cosmetic issue however - maybe the two metals will turn green if
> they come into contact for long periods.  That's bad on the outside, but
> fine for your ledger.

When two differing types of metals are in contact, they tend to
chemically react, creating an electric charge and corroding both metals.

This is why knives should be stored in knife blocks, by the way.  It's
also why the clamps on your battery terminals should be tight -- to seal
out air and prevent corrosion between the clamp and post.

Wow!  I finally knew something useful!

--BenD
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