Machine of any sort thats good costs at least 3000Euro in parts, or more. usually going bigger cost 1000 more for each 1m bigger. You need to weld or to know a welder near you. But for a small machine is cheaper to pay a welder. Otherwise you will need dry cut saw like Evolution, at least an arc welder, Mig is better, and definitely a precision straight edge that is long as your machine is wide, and a couple of precision squares.