Brand/Model: AnyCubic Kobra 2 Plus - Fairly new - about 40 hours use
Slicer: AnyCubic Slicer 1.4 - tried others (Cura, Prusa) but AnyCubics has worked best in my situation
UPDATED:
Problem : After reaching about 75% completion, the tail of my “purchased” print came loose and was deformed after completion. A second print was broken about 50% through.
What I have observed is that the print starts off just fine and looks great. There are no indications of gradual failure, it is just sudden. I will hear what sounds like the nozzle hitting the print - not heavily, but enough to cause issues.
What I tried: I’m not sure what you do on something like this. The Z axis is run by a screw and not a belt.