How to resolve the problem filament fragment stuck in junction as operating fabWeaver industrial prototyping 3D printer.
1. Loosen the screws fixing junction cover on the machine rear to remove the cover.
2. Loosen the fixing screws on the junction where the filament is stuck, remove the transparent cover, and remove the filament stuck.
3. Make sure that the end of the tube is assembled as close as possible, then reassemble the transparent cover and tighten the fixing screws to secure.
4. Reassemble the junction cover and tighten the fixing screws to secure.