I've been researching, reading, looking up terminology, and trying to figure out/deduce everything I possibly can about the aspects and advantages of CN. While I've seen many designs, some are far too complex(expensive) while others simply don't fit my needs. One design that, for some unknown reason, just seems most logical to me is the mobile gantry. Inspired by Probotix's "cnc prototype",http://http://www.probotix.com/deskt...ter_prototype/, I give you the "Elite" CNC machine design.
It has a work area of 12"x12"x4".
The undriven side of the X axis does concern me though, as I'm not sure it will slide too smoothly. I've thought about adding another rail and screw to drive it, along with a gear and toothed belt synced to the stepper motor, or just drive another stepper as a slave.
Another option, I could use the bearings on gaspipe idea instead of the linear bushing to remove the "stick" problem. I'm just worried that the whole X axis will be hindered by the "stick" of the undriven side.
Any feedback is much appreciated.