broken filament stuck in the tube – Assembly and first prints troubleshooting – Prusa3D Forum
I didn't seat my bowden tube properly in my hotend, and now there is a clump of filament stuck in the heatsink part of the hotend, how do I fix this? :
creality ender 3 - How to get stuck filament out of this direct drive extruder? - 3D Printing Stack Exchange
Filament stuck in PTFE tube between extruder and filament sensor – Hardware, firmware and software help – Prusa3D Forum