I bought a 3D printer and learned a lot in the past 3 months. It is really a good thing that I can make some funny models and share with my friends. But some times I can not print the model successfully.
Yesterday I wanted to print an owl to my niece Joyce. It printed about 7 hours with smoothly surface, then the printer head was moving but lack of filament. The filament jammed on the spool due to cross tangle. What a nightmare it is! 7 hours nothing! I have confronted this issue in the past month but I thought it is a random issue. Don’t care that much. Now it is the second time I met. Does anybody can help to solve this issue?

Pity owl.jpg Cross tangle.jpg