Quote Originally Posted by JAZZCNC View Post
The motion controller is exactly the same one as the UC300, the only difference is the I/O board of the AXBB-E only provides 4 Axis outputs with provision for 2 more using an external breakout board. Other than that the motion controller side and performance are exactly the same. The only reason really to use a UC300 over the AXBB-E is if you need more I/O for things like ATC, etc.
That's the plan (If I can get the machine to fund it itself). I'd love to have a go at making an ATC just for the fun of it.
Also. I prefer to have seperate components. Yes it can be a higher outlay but it's then cheaper to replace individual parts later on if one fails.

With closed loop..... I suppose it depends on what components you get. I've seen plenty of good/bad experiences over on cnczone. Mostly the HBS drivers.