teflon coatings was Re: machine ways

Hello,

Many suppliers of leadscrews and nuts will apply a teflon coating to
the screw, if asked to do so. Most send it out to have this done, and
I suspect the baking on entails more than a spray can and home oven...
But it can't hurt to try, right?

As to the softness and wear mentioned by Jon, there is a line of
plane bearings by pacific beariong that REQUIRE the shaft to be rough
(relatively speaking) so that the bearing material, which they call
Frelon, I think, will be "worn" from the bearing and deposited on the
shaft purposefully.

Hope this helps.

Ballendo

--- In CAD_CAM_EDM_DRO@y..., Jon Elson <elson@p...> wrote:
> Smoke wrote:
>
> > Speaking of plastics for use on ways:
> >
> > I was reading the other day how PTFE is put on ubiquitous pots
and pans
> > since it sticks to almost nothing. It is sprayed on and then
baked.
> >
> > This lead me to wonder 'suppose (during manufacture of course)
one were get
> > a can of spray on PTFE and apply it to the sliding parts and
bake them in
> > an oven'. That, combined with normal lubing should make for some
pretty low
> > friction coefficients. An extra boon would be no extra machine
work would
> > be required.
> >
> > Sounds like a good experiment to try (with some small parts of
course).
>
> Well, I suspect in the presence of chips, etc. it wouldn't last
very long.
> Pure PTFE is pretty soft, compared to typical swarf. Turcite comes
in .031
> and .062" thickness, I think. That's a lot thicker than you can
spray on.
>
> Jon