1, poor material selection, uneven thickness, many bubble impurities and incomplete melting;
2. If the temperature of the print head is too high or it is used for a long time, the material will carbonize into small black particles and be blocked in the print head;
3. It may be a heat dissipation problem.
4. When replacing materials, the residual materials are not cleaned up and will stay near the feed bearing or conduit.
5. See if your feeding gear is worn or has too much surplus material and insufficient torque.
6. It may be a model slicing problem, because the GCODE generated by slicing software is not uniform. Some segments will be faster, which may lead to Kaka.
Solution:
1, try leveling printing with other materials first;
2. Use tools such as acupuncture needles to dredge the print head.
3. Clean the feed gear.
4. Go to the after-sales maintenance personnel of the printer. The warranty period of domestic printers is generally one year.
If you use DIY or second-hand machine, I suggest you take it apart and get to know the structure principle.
6. If it doesn't work, only the print head can be replaced.
Hong Rui 3D answers for you.