Re: [CAD_CAM_EDM_DRO] Re: Servo controllers for table top machines.

>
> Because they want to sell you a more expensive servo system.
>

Not true. If my machines would work quickly and reliably on steppers I
would use them. Servos give me speed and more importantly peace of mind.
I know that even if something goes wrong the woest that will happen is
that the drives will fault out and let me know. Steppers would either
miss steps or stall altogether without the controller knowing.

> If the pitch of the screw, axis weight and choice of drive is correct,
> there should be no need for a brake,
>

There is nothing wrong with a brake. Motors are fairly free-running when
power is removed. How else do you stop a heavy Z axis crashing into it's
endstops when power is removed?

Les