Polymer Filled Low Friction Nuts: How To

Philly Resins has two Tech Bulletins about using their 1500-LFH low
friction injected polymer to fix roller-ball screw nuts. No reason
that a similar process, as suggested, couldn't be used with properly
prepared ACME threaded rod. Experiments with PTFE-Teflon, molybdenum-
disulphide, and powdered grahites, both directly one-on-one with
epoxy, and in various cross mixtures, are in order. See Philly
Resins' specific instructions for their mix:

http://www.phillyresins.com/inst-nut.pdf
http://www.phillyresins.com/ins-1500.pdf

Art Volz
volzmechatronic
Houston

--- In CAD_CAM_EDM_DRO@egroups.com, Ron Ginger <ginger@s...> wrote:
> Matt Shaver wrote:
> >
> > > From: Tim Goldstein <timg@k...>
> > > I have gotten some of the equivalent material from Philadelphia
Resins. It
> > > appears to just be a high quality epoxy with a filling of
powdered
> > graphite.
> > > I have not had the opportunity to experiment, but I did pick up
a small tub
> > > of powdered graphite from McMaster Carr and have some high
quality
> > > laminating resin on hand. Plan to see if I can get decent
results from a
> > > home brewed mix.
> >
> > If it's a black powder, it might be Molybdenum Disulfide. If
you're inclined
> > to experiment, I'll send you some MD powder I got years ago from
BelRay
> > Lubricants as a sample. It's a finely divided powder, so it
should mix well
> > with epoxy.
>
> I recently made Sherline nuts using the Philadelphia Resins
product. Its
> label does say it contains graphite. The screws work very well,
although
> I do not have many hours on them yet. I wrote a note on how I made
them
> and the results, which I think I poisted tothe Sherline @egroups.com
> list.
>
> I arranged for a sles engineer from Moglice to speak at our ME
club. He
> said moglice used Molybdenum Disulfide. I would have ordered Moglice
> instead of the Philadelphia Resins except the PA was cheaper.
>
> I would like to try some Molybdenum Disulfide mixed into WEST
epoxy. I
> intend to make nuts for my Grizzley as soon as I get a day in the
shop.
>
> ron