Botched diagonal layers
So, I'm having a lot of trouble with my printer. For the first three months, it printed without any problems, but all of a sudden it started restarting and botching layers. I resolved the restarting issue by installing an extra grounding cable, which fixed the restarts. However, I still can't get the layers fixed.
The first layer always prints okay. When printing, it starts destroying layers with the hotend (at least it seems like it) and continually botches the whole print and even scraping bits of filament away as shown in the picture. I tried changing the hotend since I suspected it might be chipped, but it made no difference. I tried calibrating the belt tension—loosening, tightening, using the Prusa tuner app, and even matching it as closely as possible to another Core One I have—but still no luck. I also tried reducing the print speed as well as the filament flow during printing - again no change. The same G-code works just fine on my other Core One. All tests and calibrations finish without any issues the whole time. I can't pinpoint the exact breaking point, but I suspect it's related to diagonal layers (though the first layer always prints fine). I'm running out of ideas.
RE: Botched diagonal layers
Did you check the thumbscrews to make sure the nozzle is properly secured?
Formerly known on this forum as @fuchsr -- https://foxrun3d.com/