This motion system was heavily inspired by you guys at E3D. A bit larger, and much heavier. 400x x 250y x 300z. 104KG. No toolchanger yet, but I'll probably correct that in the next couple of months.
Nice, really awesome work! Did you have any issues with the wider 400mm print bed being supported? How did you construct the printbed mount? You left the X dimension as is correct? I was thinking of making that one a bit larger instead to allow for more tool changers. But presumably that is the worst to scale up since it increases moving mass and increases the cantilever of the print bed.