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Honestly, the way they run the filament in this thing is a joke, I printed off a separate stand with bearings, purchase 2 meters of transparent PTFE tube 3mm inside and 4mm outside and I run that from out side straight to the extruder, they call it a reverse Bowden setup, I also run a length inside for the hotbox setup, but I drilled a hole in the back of the outer plastic body and I run it outside and then straight to the extruder.

The way they have it setup from factory is terrible, the filament drags and catches on everything.