My Anycubic i3 Mega suddenly stopped printing properly. As you can see on the images attached, the printed filament seems to be too thin which causes the layers to not stick together.
- cleaned the extruder
- replaced the hotend (the old one was quite dirty)
- leveled the bed
- increased the printing temperature (bed from 55 °C to 60 °C, nozzle from 200 °C to 215 °C and later 230 °C)