Re: [CAD_CAM_EDM_DRO] Is Single Phase Adequate?

Mark;

Questions such as yours are what this list exists for. We need to remind
ourselves of this from time to time.

You will only need three phase for the spindle. A VFD (variable frequency
drive) is probably your best choice. It will give you three phase from
single phase and also allow you to adjust spindle speed with a knob, or even
from the cnc. You can find them now for as little as $300 new. Art
Eckstein got a nice motor and matched VFD for about $350 as new surplus. I
think more are available (still looking for the bookmark).

Doug

----- Original Message -----
From: "natchamp_87" <mark@...>

> Sorry if this is a stupid question. I am planning out my CNC mill
> project and haven't bought a mill yet, but am leaning towards a BP or
> similar 9/42. My question is: am I being realistic or not in
> thinking single phase will be adequate for my mill? I know about the
> single to three phase converters but want to avoid that if possible.
> Am I also correct in that my CNC motors, whether servo or steppers,
> will not require 3 phase because I will have a power supply
> converting to DC for them? Sorry again if these are dumb questions.
>