Compressor motor turning on and off is cutting out my cnc spindle

[Doddy]

I should add, UCCNC will impact Mach3 settings, as well.

EDIT: Urgh. I feel dirty just looking inside that box - Get Henry out!

Mounting the AXBB-E where you suggest is fine - if it fits, but will be a ball-ache to commission/maintain etc. with limited access to terminals. Personally I'd look to see if there's height available to mount a plate above the stepper drivers to fix the AXBB to - so you present all terminals immediately under the cover in an accessible manner. But running before we can walk...