Originally Posted by
Gall
Motors are easy, they are pretty standard. You have to choose the right motor size then find the most powerful motor of that size you can buy. CNC conversion is easy as long as you have a working machine already, since you can use this machine to make motor holders etc. (by hand of course).
It is harder to find a good motor driver. Everything is filled with that cheap Chinese crap (it has erratic design and won't work without modifications). Either build a board yourself (from scratch or based on a Chinese board) or try to find high-quality (non-China) one.