How to change the material:
1. Raise the temperature of the nozzle before inserting the material.
2. Raise the lever of the extruder, then press the fitting clip to remove the tube, and insert the material into the bottom tube of the filament box.
3. Push the material to the end of the tube and insert the tube, then close the lever.
4. Rotate the feeding wheel downward to check if the material is coming out of the nozzle. If so, it is completed.