3D printer design questions

[Hawkeye]

That's a cool looking design. Mine is the same as Vinny's. My main concern with the cantilevered design is like building a milling machine out of a drill press - rigidity. It isn't as critical as a milling machine, but printers move in very fast, jerky movements, especially when doing honeycomb in-fill. You could end up with layers not lined up well enough.