Hey,
printed TPU 95A on my P1S, did a cold pull after, switched to PETG and then PLA – but the surface quality is terrible. Already bad with PETG, still bad with PLA. Edges are all messy and rough.
Anyone had this before? What's the quickest fix?
Thanks!
Hey everyone,
I’m losing my mind with this issue and hoping someone has experienced the same.
I have a Bambu Lab P1S and I’ve been printing SUNLU TPU 95A successfully for a while. Same filament, same settings, nothing changed. But now it keeps jamming mid-print — not at the nozzle, but directly in the extruder gear. The TPU gets stuck in the gear during the print, wraps around it, and I have to fully disassemble the extruder every single time to clean it out.
This has now happened 5 times in a row.
Setup:
• Printer: Bambu Lab P1S
• Filament: SUNLU TPU 95A, 1.75mm, external spool (no AMS)
• Profile: Bambu Studio TPU 95A preset (using Bambu’s own preset for a third-party filament)
• Print temp: ~210°C
• Nothing has changed compared to when it was working fine
What makes this weird:
• Worked perfectly before with the exact same settings
• Doesn’t fail on load — fails during the print itself
• Problem is always in the gear, not the hotend
What I’ve tried:
• Fully disassembling and cleaning the extruder each time
• Fixes it temporarily but jams again on the next print
I NEED HELP!😂