I was thinking of taking the spindle out of my HF drill press, and using it for the CNC router. I would use a more powerful motor, and use the two pulley's to change speeds. The runout on the spindle is very good, so not much of an issue there. I don't know if the bearings are good enough though. I really want the 1/2" chuck for my tooling. Is it not advisable to use a chuck? I don't really see anyone with them. What do you guys think of the idea?