Re: Fine-pitch allthread?

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Randy Gordon-Gilmore
<zephyrus@r...> wrote:

> Hi all,
>
> I'm looking for some fine-pitch (40tpi would be fine, finer would

be finer)

> 1/4" allthread to make a small, ultra-fine resolution leadscrew.

Does

> anyone know if such a thing exists? I haven't found any in the

usual

> places--MSC, McMaster-Carr, Small Parts, etc.
>
> Thanks,
>
> Randy
>
> Randy Gordon-Gilmore ,----.___________ ______________

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> zephyrus@r... http://www.prototrains.com

You need to keep in mind that the load bearing capacity on
this small of a tooth profile will be very low.
This is the reason leadscrews have a coarse thread and are geared
for finer resolutions.
Good Luck