circuit protection

[Zygoat]

i am building a new router cnc machine (3 axis to start 4th coming). check it out here.

http://www.cnczone.com/forums/showthread.php?t=99824

now, i am wondering what i need to wire up the e stop, as well as control the spindle (router) for on/off operation. (i would like to get into speed control as well, but i have not been able to find any clear info on it so far) i will be using emc2.

i am also trying to figure out what i need in terms of protection. ie circuit breakers, relays ect. what is common practice for a well setup system? what is better than good? i want this thing protected, from itself and me. i want to do it right the first time. spending a few more bucks is ok.

i have driver boards. (im 804) they are optio isolated. i am looking at an antek power supply


any info would be great.

details of how to wire stuff up or links to such post would be very helpful.