Could we control PWM or VFD that controls the spindle with this type of solution? anyone? I haven't tried this I am waiting until I gather enough information to know that I won't be wasting too much money in something that wont work. I am planning to build a delta style router for machining graphite for EDM work. Have a Duet Wifi 2 sitting around waiting for this. I promise I will post a video of this explaining my design if you help me :).