Ok Ill keep trying - how about this combination for my existing unit? Ship from USA WAREHOUSE 3Axis Nema 34 Spindle Shaft & Nema23 Stepper Motor CNC . Ill use my existing 36VDC power supply for one of the stepper motor driver - DM542A so each Stepper motor driver will have its own power supply. (if someone explains how to attach pics, I will attach some)