I have the exact same spindle, but i didn't buy a kit. I i built it all from scratch. Then i bought the XPro to drive the motors but i was wondering how do you drive the spindle. And do you have spindle speed control?
I am using a SainSmart 5 Axis Breakout Board for Stepper Motor Driver on top of an Arduino board to drive the motors. For speed control I have a DC/AC Motor Speed Driver Controller PWM MACH3 Spindle Governor 15-160V/12-110V similar to this DC/AC Motor Speed Driver Controller PWM MACH3 Spindle Governor 15-160V/12-110V