Re: Steppers slipping I'm going crazy!
Ït sounds straight off like the 30VDC PSU simply isn't powerful enough unless your running NEMA17's, NEMA23's or above it sounds definately shy of what you'd really want.
More than likely you also maybe have some tuning parameters not optimal which would also contribute to the issues.
The standard 4th axis units from China are also generally extemely weak, and it takes very little to stop most of them under load, but another thing to check is if you have any binding on any of the axis. If you can reasonably easily move any of the axis by pushing against them, then under load they will flex and move, contributing to binding and lost steps, or the noises you've been hearing.
cheers, Ian
It's rumoured that everytime someone buys a TB6560 based board, an engineer cries!