1. Pause printing and check if the filament is exhausted or jammed. 2. Reload the filament and perform the "load/unload" operation. 3. Check if the nozzle temperature is up to standard and clean nozzle clogs if necessary. 4. If filament breaks frequently, replace the filament or adjust the printing speed.

1. Ensure the print bed is leveled and clean; apply glue or use masking tape if needed. 2. Enable the heated bed and maintain a stable temperature (≈60℃ for PLA, ≈100℃ for ABS). 3. Reduce the first layer printing speed and increase the first layer height. 4. Close the printer door to avoid airflow interference.

1. Carbonized filament residue or impurities clog the nozzle; perform "hot unload" to clean it. 2. The printing temperature is too low, causing incomplete melting of the filament. 3. The feed gear is worn or improperly tensioned, failing to feed effectively. 4. The filament is damp, affecting its fluidity.

1. Reduce the layer height (e.g., from 0.2mm to 0.15mm) to improve printing accuracy. 2. Optimize printing temperature and speed to avoid uneven filament extrusion. 3. Check belt tension to eliminate mechanical vibration. 4. Perform post-processing such as sanding and polishing on the finished part.