@A2 - do you have a build log anywhere? I have a large format Simpson in the cards and am a fan of the hardware store approach where possible, with possibly thin-walled steel extrusions or laser-cut sheet metal for the arms? My goal is to be close to a 1m build area with a 4' X or Y length, but I might fudge the X by placing the bed on wheels on the ground, driven by a long steel rack gear. (think Lego Monorail-type) -- I would like to get at least two large format machines running, with multiple beds that can travel between them. (different materials/processes/nozzle diameters?)
[www.amazon.com]
[www.amazon.com]