Roy J. Tellason rtellason at verizon.net
Mon Jan 19 07:28:08 CST 2009

On Sunday 18 January 2009 11:23:42 pm Mike Loewen wrote:
>     I'm in the process of rejuvenating an IBM model 29 keypunch, and a
> couple of areas have some sort of oxidation on them.  The card drum is the
> worst:
> http://sturgeon.css.psu.edu/~mloewen/CardDrum.jpg
>     The steel parts are fine, but the rest has a white material over most
> of it.  I'm not sure what sort of metal it is, looks a bit dark for
> aluminum but the white material looks similar to aluminum oxidation.

I'll bet that stuff's galvanized (zinc-plated).

> What's a good approach to cleaning it up?

Steel wool?

Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space,  a critter that can
be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
Information is more dangerous than cannon to a society ruled by lies. --James 
M Dakin

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