- Dec 11, 2013View Source
Well, this is quite late, but from what I see in the schematic, it looks like you can intercept the step and direction signals quite easily. just disconnect the stock drivers from the motor and instead connect to a gecko drive or something similar.
You will need another DC power supply to drive the geckos, but you can drive them higher than the voltage you get out of the box. Since the speed of this mill is likely limited by the back emf of the motors you should be able to get much higher speed out of this setup.
I don't have my own PNC mill yet (in shipping), so take it with a grain of salt. I have built a few cnc mills though, so I am not just pulling it out of my @$$