Hi all, I've run my home built cnc machine for approximately 8 years. I use Nema 23, Mach 3, Gecko g540, 5 start acme screws on linear rails.
I've never had a problem till now. I have been using cheap air cooled spindles but keep wearing them out. Inner bearings keep going bad.
I just upgraded to a 80mm liquid cooled 110v spindle but now it it too heavy for z axis to lift without stalling. I've slowed it way down but no luck.

How do I overcome this? I don't think gecko will drive a nema 34 and I don't know how else to connect to mach 3 if not all going through the same driver board.