18 Jan
2009
18 Jan
'09
5:38 p.m.
I was checking in case they fitted my ASR33 but it uses
narrower ones.
I see lots of Teletype paper and paper tape on eBay but never ASR/KSR/
RO 33 ribbons. Probably easy to get if you know what to ask the
suppliers for.
Teletype ribbons are standard typewriter ribbons of the type with rivets
/eyelets at the end to automatically change the ribbon feed direction.
Should not be difficult to find. Ones with Teletype on the box
occasionally show up on ebay but I haven't seen one go by recently.
The Okidata Microline 80 etc ribbons are the style you need for an ASR33
and may be easier to find in a search.
Random matches from search
http://www.officesupplyoutfitters.com/okidataml80.html
http://cgi.ebay.com/Okidata-Microline-80-82-92-Ribbons-Qty-7_W0QQitemZ26015…
18 Jan
18 Jan
11:23 p.m.
New subject: Oxidation
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.
What's a good approach to cleaning it up?
Mike Loewen mloewen at cpumagic.scol.pa.us
Old Technology http://sturgeon.css.psu.edu/~mloewen/Oldtech/
19 Jan
19 Jan
12:08 a.m.
New subject: Oxidation
On 18 Jan 2009 at 23:23, Mike Loewen 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'd try mechanical buffing either with a powered cotton buff and
white rouge or a polish such as 3M 39529. Or try something from the
local auto supply store for polishing alloy wheel rims. If you want
to reproduce the original coating, Caswell Plating has small
anodizing kits.
My thoughts, anyway...
Cheers,
Chuck
8:28 a.m.
New subject: Oxidation
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
10:53 a.m.
New subject: Oxidation
--- On Mon, 1/19/09, William Donzelli <wdonzelli at gmail.com> wrote:
Exactly. You need to be careful using steel wool. And not only that, think of the animal
rights issues. Do you have any idea how poorly they treat those steel sheep?
I'd try using a solvent before using abrasives. Some kinds of corrosion come off with
nothing more than Windex on a paper towel. For example, the nasty green corrosion that
likes to build up on low-end tube TV chassis. I'd start with the gentle solvents and
see what they do to it. Brake parts cleaner is also pretty good at getting gunk off of
metal. Of course, if you use any solvents, be sure to clean them off after you're
done...
-Ian
Steel wool?
No, using steel wool on many other metals will later result
in more
corrosion. Steel wool leaves behind tiny bits of metal
embedded in the
metal, and these can cause problems if there is enough
moisture.
12:38 p.m.
New subject: Oxidation
On 19 Jan 2009 at 7:53, Mr Ian Primus wrote:
Exactly. You need to be careful using steel wool. And
not only that,
think of the animal rights issues. Do you have any idea how poorly
they treat those steel sheep?
I agree. I do a lot of power buffing, polishing etc. in my other
hobby of refurbing/customizing large brass musical instruments.
Steel wool is a no-no. Try whiate rouge on a sewn cotton wheel; if
that doesn't do the trick, try tripoli. You'll end up removing less
material than with other methods--and get a better finish.
If, as someone else has suggested, there's a lot of surface pitting,
the only solution I know if is to electroplate the carcass and
machine it to size.
Before I'd do that, I'd start looking for a replacement, however.
Card drums for 029s can't be *that* rare. Keypunch pools typically
kept lots of spares, with various program cards already mounted. I
suspect that NOS ones are still lurking about.
Cheers,
Chuck
8:43 a.m.
New subject: Oxidation
On 19/01/2009 04:23, 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.
What's a good approach to cleaning it up?
It looks to me like Mazak, which is a zinc-aluminium (and sometimes some
magnesium and copper) alloy used for die-casting. You could try steel
wool or a wire brush but I would bet it's badly pitted and probably
needs machined.
--
Pete Peter Turnbull
Network Manager
University of York
5:54 p.m.
New subject: Oxidation
Pete
My God... its is so bad... try kerosene with oil or vinegar.
I have here in my Museum, in some condition, 026, 029 and 032 IBM ..
And no volunteers to clean up that stuffs.
May be some in Computer history museum in Mountain View help you. There is a
technician there with 89 years old and he
is good in IBM stuffs, I saw there a 1401 work until today.
See Yah
Jose Carlos
Brazil
take a look the photo I did last august there.
2009/1/19 Pete Turnbull <pete at dunnington.plus.com>
On 19/01/2009 04:23, Mike Loewen wrote:
--
Jos? Carlos Valle - Presidente
Museu do Computador
Fones: (+5511) 4666-7545 e (+5511) 8794-6730
Informa??es sobre doa??es no Blog:
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ATEN??O: Envie uma c?pia do formul?rio para este email. e mantenha uma c?pia
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Visite nosso site:
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MAPA DO NOVO GALP?O:
http://maps.google.com.br/maps/ms?msa=0&msid=108193747742585494988.0004…
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<http://sturgeon.css.ps…
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?
It looks to me like Mazak, which is a zinc-aluminium (and sometimes some
magnesium and copper) alloy used for die-casting. You could try steel wool
or a wire brush but I would bet it's badly pitted and probably needs
machined.
--
Pete Peter Turnbull
Network Manager
University of York
5663
days inactive
5664
days old
9 comments
9 participants
participants (9)
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cclist＠sydex.com -
djg＠pdp8.net -
ian_primus＠yahoo.com -
josecvalle＠gmail.com -
mloewen＠cpumagic.scol.pa.us -
pete＠dunnington.plus.com -
rtellason＠verizon.net -
teoz＠neo.rr.com -
wdonzelli＠gmail.com