Hood,
You have good eyes. The e-stop switch is a dual one, see the attached pictures. What ever way we'll implement it, it's location is no good for me, being one foot off the ground. If I have to, I'll put it on a pole of some kind, so I can hit it quickly. I thought the e-stop on the MPG would be more convenient.
On another note: About grounding. There is a lot of info on the web about star grounding, but no pictures. So I put a terminal block in and tied all the grounds to it, including the shielding from the limit wires and the spindle motor's shield wire, and the power supply's GND. Did I do that right, or did I create a ground loop? (see picts)
Mike
Ps. On grounding3.jpg I show 2 snap on ferrite noise suppressors. Is it good to have them?