Beginners screws ( was ACME ( was Re: leadscrew,

> getting back to the issue of precision.
> I have 400 steps per rev stepper.
> Looks like for 2" diameter drive pulley I should have 0.0157" per step.
> Can I increase the resolution by using half-step - microstep option?
> Does it mean that for half- step I will get 0.00785 resolution, and for
> mocrostepping
> even less?
> Regards, Alex

That's correct. Microstepping would give you .00157 per step. Depending on whet you intend to do with the machine, .0015 or so might be fine. I doubt you would be happy with .007 though. This is exactly why I went to lead screws.

Ross