Actually, if you go back to the original, lasercut Shapeoko (mentioned briefly on the About page: http://www.shapeoko.com/wiki/index.php/About ) and w/ a link from the Parts page ( http://www.shapeoko.com/wiki/index.php/ ... urce_Files ): http://sourceforge.net/projects/shapeokocncmill/ that motor placement / screw configuration was used. It went away when the machine transitioned to MakerSlide, though it was still a single motor for the SO1. Even now, not all SO2s have the dual-motor upgrade, a couple of people have done driveshafts ( http://www.shapeoko.com/wiki/index.php/Drive_Shaft ) instead. Edward has published a list of (some of) his other machine designs:CheapSquier wrote: Something else that I didn't realize until I started looking closely at your build. I didn't realize that Shapeoko has a motor on each Y rail :? Many of the desktop CNC systems I've been looking at use a single screw under the gantry, right down the middle of (underneath) the table. (Ex: http://www.cncrouterparts.com/benchtop- ... p-313.html) That way they only use one motor for the Y. So I was going to ask you how you kept the two Y motors from getting out of sync, but I guess Shapeoko already figured that out somewhere along the way.
and there's a timeline of machines here: http://www.shapeoko.com/blog/archives/305