Hi I've been reading this forum whenever I've had time for the last 8 months. I am getting parts together to build a CNC Router. It will be based on the http://www.solsylva.com/ design with a few upgrades like precision ground rods for slides, gecko drives and acme screws. I have a couple questions I would like to ask. First the stepper motors I am thinking about using are keling tech drives 425 oz/in. The specs are at http://www.kelinginc.net/KL23H286-20-08B.pdf. First I guess is which gecko drive would be best. Then the next Question is What kind of power supply will I need to run 4 steppers. I have been trying to figure it out but I keep getting different answers. I have been thinking about using 2 power supplys 1 supply for 2 drives as the only answers I have been able to come up with would require a a very large expensive supply. Thanks in advance Lloyd