aspaguy wrote:

> I wouldn't drive a unit the size of yours from one side only as if the lower end
> of your "T square" lags behind you will get square cuts that are
> paralellograms.

Interesting, as the 13' (foot) long gantry on my cnc router
is driven this way, with bearings 3 feet or so apart (roller bearing/cam
followers on 1" rail) and the only unintended movement I get has to do with
not running a reducer from the stepper to the rack (yet!) this on a machine
that cost over 100K new (in the 80's). yes, this can work.


erie patsellis
Shelbyville Design & Signworks
1309 W. S. 7th Street
Shelbyville, IL 62565
(217)774-4444
visit our website at http://216.43.233.169



[Non-text portions of this message have been removed]