On 19 Jan, 2009, at 05:10, cctalk-request at
classiccmp.org wrote:
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.
What's a good approach to cleaning it up?
I seem to recall that the drums on 02x keypunches were brownish
(probably an anodized coating) and silver-metallic if you scratched
them or they wore through. I suspect that the drum is a magnesium-
aluminum die casting.
I always through they were rubber covered, but from the picture it
looks like I'm wrong. My 836 (like an 026) came without its drum and I
was told that all leased machines had their drums removed and the
customer got to dispose of the rest. Maybe it was rubbish. A couple of
them have come up on eBay in the last five years and both went for
silly money which to me means there are more keypunches than drums.
Roger Holmes.