There is a GO-Tech meeting tonight at Maker-Works in Ann Arbor. Map. Although not limited to just CNC, GO-Tech a geek show & tell with 5min presentations held the 2nd Tuesday of the month. We have been meeting for 4 1/2 years. Last meeting we had about 50 folks attend around 10 presentations and the coolest was one of the guys shot some ping-pong balls through a 1/4" piece of masionite using piece of pvc tubeing and a vacuum. There is a yahoo tech group "notbago" (it origanlly called Not breakfast at Great Oak.
Meetings are free, open to everyone and you do not need to be a member of Maker-Works to attend meetings there.
Hope to see you there!