I have a solution for the layer shifting that I worked with the team to work out. (Thanks Alice at Snapmaker!).
@gbeeton Although I don’t think it would resolve your problem, it is plausible. And it is a 2 minute job, so couldn’t hurt to try!
The Issue
The Rotary sticks and slips origin on layers (regardless of 3D Printing, CNCing, Lasering):
The Goal
To loosen screws that may have been overtightened, leading to the rotary sticking and slipping.
Step #01
Remove the 5x Screws on the back of the Rotary Unit
Step #02
Loosen the 4x Plate Screws slightly and evenly. I probably only did mine 10-15 degrees.
Step #03
Put it all back together and get creating!
I’ve done 19 burn test, 7 of which were larger runs from between 45min and 4 hours. All have been flawless now. Prior to this, I was having an issue every 2 or max 3 runs.,
Hope this helps some others as well.