Re: [CAD_CAM_EDM_DRO] microstep accuracy was what comprises as step

"Scott M. Thomas" wrote:

> Accuracy may be the wrong term here, but you would get finer steps of
> positioning, correct? So if you were using feedback, let's say from a DRO
> unit, couldn't we then achieve higher accuracy?

Not necessarily. A stepper guarantees it will move when issued a half
step, under almost all circumstances. Much finer than a half step, and
there's no guarantee of any movement at all, and it most likely will not
move a proportionate amount. If you have X10 microstepping, and you
slowly click in steps, the motor may only move every 3 or 4 steps,
erratically. If you use encoder feedback, without deadband, you
guarantee hunting will occur. it might be rather innocuous, or it could
cause a really annoying vibration.

Jon