To replace the filament on the Bambu Lab P1 series, follow these steps:
¶ Video Guide
¶ 1. Select the 'Unload' option on the screen.
The printer will begin heating up the hot end, then cutting the filament automatically.
¶ 2. Remove the filament
Please manually pull out the filament as soon as possible according to the tips on APP/Studio.
If the nozzle temperature is maintained at 142℃ and does not decrease, it means that there are remaining filaments in the extruder, and the unloading is considered incomplete.
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¶ 3. Select ‘Retry’ to repeat the process if the filament has not been removed
Bambu Lab P1P load filament on spool holder | Bambu Lab Wiki
That's it! Now you can start printing!