I don't think the JGRO machine will meet your accuracy needs. I built one and am still chasing accuracy, the frame is not that rigid and the roller bearing is very hard to set up. I have a K2 3925 with servos, it will meet your accuracy needs with some modification to strengthen the frame, cost wise will go over $5K. I'm working on a new design using aluminum extrusions and milled UHMW bearings that should address many of the JGRO issues.
Just build one machine unless space is at a premium for you. You will develop a feel for the single machine that will allow you to be much more productive. |