Thanks for taking the time to do this review/video Dean; I have a couple of questions for you...

1. What would make the fault signal handy for reporting back to Mach? my initial thoughts are you could use it to stop mach and also the spindle?, is there anything else it could be used for/to do? How would we use it to control a bunch of relays for things like the spindle, coolant and so on?

2. What/why would there be a massive mechanical advantage from this system when coupled to a lead screw?

Cheers,
Lee