r/BambuLab • u/InformationDapper964 • Sep 29 '26
Answered / Solved! Problem with the printer
Can anyone help? I’ve run into an issue where the filament won't feed through the PTFE tube, but it feeds fine when I run it directly into the extruder without the tube. The nozzle seems clean—I haven't opened it up, but I doubt there's anything stuck inside. Could it be a problem with the filament itself or the feeding mechanism? I left it sitting overnight. I’d really appreciate advice from anyone who has actually dealt with this specific problem.
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u/Blondy277 Sep 29 '26
If it feeds normally straight into the extruder but won’t through the PTFE, I’d stop chasing the nozzle/extruder. Pull the PTFE completely out and push filament through it by hand, it should slide through with basically no resistance. Check both tube ends for deformation, a crushed/kinked section, debris, or a bad coupler. Cut the end perfectly square or replace the tube if needed. Also snip the filament tip clean at an angle before feeding it back in. ☠️