"Even the best of modern precision faceting machines do not produce, hold, or repeat to one-hundredths of a degree..." This is another video documentation of the fact, and some remarks about designs and design "best practices" for modern faceting.
Link to a video demonstrating this issue on the Ultra Tec V5 with DAD:
https://youtu.be/MkGtCOdDfZs
About Faceting Competition
https://youtu.be/UJw4rAj9ozQ
Navigating the Rabbit Hole
https://youtu.be/L3i7g1T-LDw