Re: UHMW ACME NUTS......

Thanks everyone.

I think I will give the Delrin nut a try from McMaster - looks like
an inexpensive, ready made solution. Being small too, it shouldn't
be too difficult for modifcation into a "zero" backlash nut system.

Chris








--- In CAD_CAM_EDM_DRO@yahoogroups.com, "ballendo" <ballendo@y...>
wrote:

>
>
> Hello,
>
> Freezing UHMW before tapping it helps immensely.
>
> Hope this helps,
>
> Ballendo
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "yethdear0" <da-mack@e...>
> wrote:
> >
> > UHMW is waxy, stringy and tends to shrink after you cut it. It

will

> > shrink after tapping and may have to be tapped again after a day

of

> > sitting. We use to use special oversize taps for UHMW.
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "lcdpublishing"
> > <lcdpublishing@y...> wrote:
> > >
> > > Has anyone had any luck (or experience) tapping UHMW plastic

for

> > use
> > > as an ACME nut. I am looking to use 1/2-10 ACME threaded rod

for

> > a
> > > lead screw. This will be in a very dusty enviroment, so I am
> > > thinking I want the screw to run dry, thus, the desire for a

UHMW

> > > nut.
> > >
> > > TIA!
> > >
> > > Chris