CNC mach spindle not spinning

[Kitwn]

Another Australian wooden clock builder! Welcome to the forum.
I got into clocks by accident after building a Heath Robinson cnc router and wanting something to test what it could do. I'd never contemplate the tedium of cutting wheels by hand.

I seem to have spent most of my time upgrading the router, making things for my wife rather than me and have only just yesterday finished my gear cutting jig which will hopefully see a finished clock appear in the coming weeks for the first time in ages.
Are you familiar with Art Fenerty's 'Gearotic' software? Well worth a look if not.

https://www.gear2motion.com/

EDIT: Can't actually help with Mach3 questions, but you'll find plenty of people here who can.

Kit