I have a X1C and I have been getting wavy lines that are not horizontal on these vertical walls. This part has printed fine for months until last week.
I have tried 3 different brands of filament so I have ruled out a filament issue.
I have replaced the extruder and hotend with brand new ones so I have ruled out the extruder, nozzle, hotend, and thermistor.
I have loaded the filament from the external spool so I have ruled out the filament hub and the entire AMS.
I have not changed software, firmware, or the model so it’s not a software issue.
I am out of ideas. Please help!