Hmmm. I added a follow-up on my video/site-related thread for vtcnc to look at. Seems the video upload problem is a problem for some. Might shoot him a PM too.
I have not gone through the tuning process yet on the OEM750. There are ways of reducing current and tuning the loop using serial commands, which I will do once I get the right-sized stepper hooked up. I have ordered a Nema 17 stepper to try out. I also have some old hard drive steppers. Seems like most of the ones I have are 5 wire, unipolar drives that I can't use my OEM750X on. Are they typically bipolars in the old drives? The indexer makes the software part of the project very simple.