I recently bought an older techno-isel machine. the machine ran stepper motors, and I bought the servo package and upgraded the machine. I would like a 4th axis machine, but the prices are a bit high through techno. My question is can I build a 4th axis to run with the techno controler and how would I go about it. I know I would have to buy a servo motor and build the the rotary table, but how would I get a control board for the 4th axis that will run with the rest of the axis without changing the techno software. Is this even possible. What do you think. Thanks