I will be making the print base out of 256 x 256 wire arrays that are individual modules that take a digital input of x and y.  These modules can be combined for a larger printing area and should not slow down the printing process as each module will be able to print simultaneously and would require only pluging into the control box up to a limit based on how many digital ports are available on the control hardware.  To put this in perspective the picture on the project with the row of wires is about 256 long and I will make 256 more of those.  This will be a one module demonstration unit which will only print small objects but should still do so ten times faster than other 3D printers.