Rex100

Thanks for that, further testing indicates it is *not* the Ggode although there is still that weird artefact at layer 50 on some but not others. I have had it reliably printing now regardless for some time. I didn't really do anything except stick with one 'known good' card. Have purchased some new ones as well. I will pay close attention to which card does what if it happens again and post back here but yes sounds at this point like you may be right on. Thanks so much for taking the time to help

All of a sudden I'M having a prints *always* fail at the same point about 10mm up, the print head then lifts up 5 inches or so, squirts out some filament then says its finished all OK (many many hours short of the expected time). This has just happened after a year or more of never seeing this issue with Cura/Ender3v2, same on every slice/print now I'm pretty new to this but... I loaded the Gcode file into https://gcode.ws/ and yes I can see a weird artefact at layer 50 (image 1 attached), re-sliced multiple models multiple times with multiple different settings and I now always see that artefact. I analysed an old Gcode file that I know works and it DID NOT have that artefact at layer 50 That could be a 'red herring' but I don't have any other ideas, help please I attached a gcode file from the print that Im trying to do and has failed 5 times at the same place Trouble shooting steps on top of what's listed above: I upgraded Cura to the latest version and it didn't make any difference Installed Cura on another fresh PC same thing, still the weird artefact at layer 50 Ender 3V2 Cura latest version H2FF_V3_Mirror.gcode