I bought 3 of these looking for a somewhat bolt together cnc router that will have a 2.2kw chinese spindle with a k2cnc z axis.
http://cgi.ebay.com/ws/eBayISAPI.dll...t_11754wt_1021
They appear to be pretty hefty, over 80lbs a piece. My question is, do I really need the second rack and pinion to drive the gantry or should I just use them both? I plan on turning the rails so the motors face down and the carriage faces outward and will bolt the uprights to it. Any concerns or better ideas?
I am also wondering about the servos/amplifiers. The description says they take step/dir, but the manual is vague. Any ideas?
Charles