Had an issue where I thought my Z axis was accumulating error. After the suggestion from the Centroid forum, I checked if I was losing steps between Acorn and DYN4. I had been through this before on my router. I incorrectly assumed this would get fixed based on my experience a year ago. Nonetheless, it was short work to modify the DMM DYN4 -> Acorn cables and switch to the Acorn step/direction signals on the DB25. Once I did that all was well. No more lost steps between Acorn and DYN4.

At that point I needed to go through the axis calibration and backlash measurement. That went well. Lastly, I dialed in my Hallmark ITTP again now that the machine was moving as the control commanded. I'm happy to say I made the part I've been using to test this all out. Part turned out good. Two sided part using two WCS. Fusion 360 for CAD and CAM. Really happy with Fusion for CAM on the mill.







Some of the various pieces of scrap I made diagnosing issues and dialing it in:



Installed: