Re: Stepper control w/o a computer?????

At 21:54 02/01/2003 +0000, you wrote:

>If you look in the files section of this group there are a few circuits that
>will generate step signals to do what you want. If you use a proven existing
>CNC control program you can skip the power feed step and not worry about
>computer bugs.
>
>For a mill drill unit 125 oz/in motors would be very weak. Most people use
>300 + for a mill drill unit and would use 125 oz/in or bigger motors for a
>Sherline or Taig.

The early Taig CNC mills had 140 oz-in motors; they now fit 200 oz-in.
Having experienced both, I wouldn't advise going lower than 200 oz-in -
particularly on the Z axis, as the new box slideway with spindle motor
attached takes a fair amount of driving.


Regards,
Tony