Re: [CAD_CAM_EDM_DRO] Homebrew DRO system

> For the most inexpensive new linear encoders, the
> http://www.usdigital.com tape at $2/inch and $28 for the HEDS
> encoder is the best deal around. That will give a max of 1440
> steps/inch. If you need a higher resolution, you'll have to pay
> a lot more.

Funny you should mention those... MSC delivered some 1"x2" aluminum
tubing and UHMW plastic this afternoon, and tomorrow is earmarked for
using it all to mount and protect those very strips. I'm hoping I can
cut a slot in bottom of the aluminum channel and drive the slider with
that - I'm not worried too much about chip contamination since it will
be behind and somewhat under the bed, and I don't use cutting fluid
very much.

Current plan for mounting is to make some clamps from Al bar stock
that will grab the rear V-way much like the gear cover mounting
bracket on my South Bend lathe, and bolt the encoder enclosure under
those.

I'll post when/if I get it working... may take into the weekend though.

Chris

--
Christopher C. Stratton, stratton@...
Instrument Maker, Horn Player & Engineer
22 Adrian Street, Somerville, MA 02143
http://www.mdc.net/~stratton
NEW PHONE NUMBER: (617) 628-1062 home, 253-2606 MIT