Help request: Impact printer by the digital group

From: Joe <>
Date: Thu Oct 23 15:15:23 2003

At 08:14 PM 10/23/03 +0100, you wrote:
>> I've had great luck using liquid graphite lock lubricant. The solvent
>> evaporates and leaves only the graphite. The graphite particles in the
>Have you tried 'dry film lubricant'

   No, I haven't but I should. It would probably work as well. I just don't
like the dry powdered graphite. It's a joke as far as I'm concerned.

(or at least that's what it's called
>over here, Electrolube (used to?) make it). It's similar, but with fine
>PTFE particles. The carrier evapourates (it's not really a solvent,
>neither for graphite or PTFE), and leaves PTFE on the surface. Like the
>'liquid graphite', the result is non-sticky, doesn't attract dust, and
>seems to be good for many light machine parts.
>> >If you need to, use tungsten wire for the print
>> >hammer pins themselves. Also replacements would
>> >not rust.
>> If you can't find the right size wire, try piano wire (from a hobby
>> shop) or drill rod (industrial suppliers). Drill rod is annealed (soft) but
>I beleive the original pins were tungsten wire in some printheads. The
>stuff certainly behaves like tungsten...

   I wouldn't be surprised. Tungstan has a lot of properties that would
make it usefull in print heads; very hard so less wear, heavy weight for
inertia, and it withstands high tempertures well. But I'll be the
manufacturers hate it, it's hard to machine and expensive.


Received on Thu Oct 23 2003 - 15:15:23 BST

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