GOLIAT 3D PRINTER

THIS IS MY DESIGN OF A GREAT FORMAT 3D PRINTER.
THE SIZE OF PRINTING ONCE FINISHED WILL BE OF 55 HIGH, 70 WIDE AND 70 LONG.
I HAVE USED IRON SQUARE OF 16MM. THROUGH TESTS CARRIED OUT, PERFECTLY SUPPORTS THE COMPLETE STRUCTURE OF THE PRINTER.
FOR MOVEMENTS Z AND Y I HAVE USED ENGINES NEMA 24 AND FOR MOVEMENT X ONE NEMA 17
I WOULD LIKE TO DESIGN ALL THE UNION PARTS INSTEAD OF WELDING, AND WILL FACILITATE IN THE FUTURE ANY MODIFICATION TO BE PERFORMED.
THE LINEAR BEARINGS ARE INCORPORATED IN T