I have a basic Creality Ender-3 with a black rough bed cover. I'm printing with PLA.
After assembly, I printed 3 or 4 small toys sliced by Cura with basic settings. All were printed very well!
However, after that, extruded filament would not stick to the bed. I tried the following:
- Bed calibration with A4 paper (each corner with a tight nozzle to paper and repeated calibration again)
- Once raised up the bed temperature from stock 50 to 60 °C
- Washed the bed with a soap and water (and dried)
- Sprayed with a hair spray
- Changed the filament
Nothing helped so far.
What else can I try?