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by chaosite 162 days ago
The only place PFAS is used in an FDM printer is the filament guide some printers have. That's a Teflon tube that the filament travels in towards the hotend. Bowden style printers tend to have a long tube, direct drive printers sometimes have a short tube fully contained in the hotend assembly.

I don't see how PFAS can be used as a filament in FDM printer. It's not a thermoplastic, that's one of its advantages as a material.