I really need help, i'm a student and my high school manufacturing class just got two new ultimaker 2+ it was working great but then this last couple weeks its been acting up.
1. the first problem is that after a print when i got to print again the machine makes weird noise and the feeder tries extruding really fast which makes it over feed and then stop because it grinds the material. I updated the firmware and that didn't help the only way to fix it is by turning the machine off and on again
2. the second problem is that when I paused it keep extruding leaving a huge blob of filament.
Please Help! i