... 1800*1800 mm 3. High speed, high precision 4. Low cost cheap cnc multi head machine with stepper motor Advantages: 1) ... ' requirements.Technical parameters LD-1818-4x,y axis working travel1800*1800mmz axis working travel200mmmax speed15000mm/minwork-holdingcolletinterfaceUSBcommandG code *.u00 ... etc., also can process iron, copper, aluminum. plastic board, plank and so on, which are metal or nometal ...