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How to solve if no filament come out of extruder after tap [Build] model file and extruder begins moving normally?

Adventurer 3

1. Check the filament guide tube, make sure filament has been pushed into the extruder. If not, please tap [Load]. Restart the building model file after you see filament come out of the extruder.

2. check the nozzle whether it is clogged or not. If so, please refer to Q1 for the solution.