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 THEIR PRINTING PIECES USING https://www.thingiverse.com/thing:1811769.
THE EXTRUDER IS AN IDEA OF https://www.thingiverse.com/thing:1055201
HOT BED IS THE ONLY PART IN WHICH I AM CURRENTLY WORKING.
ANY COMMENT OR CONTRIBUTION WILL BE WELCOME AND THANKFUL.
GREETINGS TO ALL.
GREAT JOB OF THIS COMMUNITY.