dwdw

After reading this thread I an interested in building a 3 axis controller. This is what I have : 1. Full size Enco mill 2. Digital display for the X,Y nothing for the Z except for a crude chain drive DC motor on the knee and I would move that to the quill. 3. Resolution is only 0.0005 4. Quadrature encoders are on the table with anti-backlash gears, not the modern linear type glass etched encoder. Is there a way to use 24Volt DC motors 9using a high and low speed PWM controller on each to drive the lead screws and use the encoders for the feedback to the controller? I have worked on this type of unit (only the mechanical end) I have a good handle on the way it works and a reasonable electronics backround. Any help would be apreciated. Thank You dwdw