My niggles continue. Latest one is really odd. After replacing my blown PSU, Ive had an el cheapo die and 2nd one seems to be holding up.

Z (stepper motor) moves when driven at slow feedrate. At higher feedrates it doesnt have torque and whilst it makes a noise, it doesnt move. I swapped the connectors, problem moved, so thought it was the connectors / BOB. However later when I tested it was inconsistent.

How do I test if I am getting the correct step / dir to each drive? Taking the steppers off is a pain, finding it difficult to figure out what else it could be. Wiring looks OK.

I did notice that a CSS value moves when I move one of the axis, turns out this is constant speed so should be OK. Anything else I Can look at? I dont like / trust these cheap controllers however I dont want to spend on the machine as Ill sell it at some point and get something larger for my needs (or just build one).