Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Stephan wrote -
I would also think stainless and brass is much better...
It has more to do with metallurgy. The combination of Stainless/Stainless
would act very much like there was sand in the threads. It WILL seize. For a
non-moving attachment, standard iron is OK; for a moving environment brass
is it.

I see threre is the danger of dust sticking to it, but maybe some oil on the
spindle is better than totally dry. (all machines i know with ways/threads
use oil, even if they produce abrasive dust).
I hope not. The shavings from fiberglass, copper, whatever are in fact
abrasive. You would do far better to use graphite on the moving parts. This
lubricates, but does not 'attract' shavings.
maybe run a die over it... (dave how do you adjust a die to "clean only not
cut" - the dies here are not adjustable... without diamond file ;-).)
He is probably using a lathe die. The type that are round and fit in a
bar-holder aren't adjustable. 'They' (whomever the mystical 'they' are!) do
make thread-chasers, this would do the trick. For that matter, if you use
your non-adjustable taps with an application of beeswax you could clean the
thread up quite nicely. I've been using this on 00-90 and 2-56 for years,
both inner and outer taps. You need to clean the beeswax off when done, but
that's a walk in the park.
Bert