I'm hoping to get done with building the mechanics (minus the motors, lead screws, and router) by the end of the week. I also plan to build the motor controller myself based off of a modern chip. One those that sets the winding current by switch combinations. I earlier wanted to go for the L297 +L298 combo, but many people complain about the HF whine when the motors are at idle as the chips are current limiting. It's also a little difficult setting a uniform current through all the motors.