been trying to make some structural decisions. not sure wether to have the y axis beams face down and plate them with 10mm al. bar with the ballscrews mounted on top: layering may cause vibration issues. Or have them standing upright which should be better in terms of flexing in the z direction and mount the rails and ballscrews in a different configuration.
off to the machine shop tommorow at any rate to start drilling holes in the frame, and to maybe mill some support plates, time allowing