While trying to get a piece of broken filament out of the filament buffer I managed to push out part of the gripper from one of the couplers that I suspect it’s on the filament buffer side. Of course it’s out of stock but the upside is that the PTFE tube still locks in place for the moment so I’m n…

I’ll answer my own question… I successfully removed the coupler from my spool holder, did a reverse image search for it and found replacements on Amazon, Link , I’m assuming/hoping I’ll be able to pop the coupler out of the buffer as easily as I did from the spool holder or that the buffer actually …

You might be interested in how I managed the same repair. [image] H2 Series Serviceability Upgrades (Modifications) Bambu Lab H2 Series Bambu PTFE connector upgrade https://cults3d.com/en/3d-model/gadget/bambu-ptfe-connector-upgrade I had a L93A PTFE connect…

Nice, am I missing something as I can’t figure out where to get the expanding collet as that seems like it would help a lot to be able to get a firm grip on the connector.

Post 14 has a download link. (I have tested the collet on new PTFE connectors and it did not damage the metal finger that grab the PTFE tube)

Okay follow up for anyone that may have this issue… I found a procedure in the Bambu Wiki to replace the compression fittings, link below, and (5) fittings on Amazon for ~$7 USD, link below as well, I figured I’d give it a go and it was pretty painless though a bit unnerving popping out the old com…

Well it happened... Filament buffer PTFE coupler SNAFU

Bambu Lab H2 Series

MiamiJerry September 11, 2026, 5:31am 3

You might be interested in how I managed the same repair.

The expanding collet tool in post 14 of that thread, can be used instead of my safety wire trick in post 13.