China makes the largest CNC machine. It weighs over 550 tons and is capable of machining large sized components. It is made by Qiqihar Heavy CNC Equipment Corp. The largest CNC mahine is a 3D printer. Using only artificial sandstone and some high tech software it is able to produce very large scale models. It works in 5-10mm sections, the end poduct is as hard as Portland cement but with no need for reinforcement.