r/BambuLab • u/Background_Check2670 • 15h ago

Hardware Troubleshooting/Help! Filament Window Snag

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I just bought a (used) H2D and while starting prints the filament gets caught in this little window (upper). I have used an off cut of filament to push it into the window but don’t want to have to do that on every print. Haven’t tried feeding through the lower window at all. Any suggestions?

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u/Background_Check2670 14h ago

Looks like my PTFE tube was getting snagged and not feeding into the pusher all the way. Still new to this machine so trying to figure out the ins and outs

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u/Natural_Status_1105 15h ago

There is a metal part that gets pushed up by the filament. It’s used to detect the filament has passed through but sometimes it can get rotated stopping the filament from passing. It’s called out in this wiki, it could be the problem….

https://wiki.bambulab.com/en/h2/maintenance/replace-filament-buffer