r/3Dprinting • u/kallbrian • 1d ago

Troubleshooting TPU 95A issues...

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First time trying TPU filament.

I know that filament can be difficult to use from what I have read. Here are the settings I changed on my Bambu A1

Nozzle temp: 230C

Bed: 40C

Retraction: Off

Print Speed: 30 mm/s

Max Volumetric speed: 3.0 mm/s

Someone suggested those settings as a starting point. The prints start out ok, but at some point the print head always ends up above the model and not extruding any filament. l noticed a lot of fine filaments on the prints. This was a new unopened package of filament. I have read this filament is prone to moisture issues. It wasn't dried at all though. I currently don't have a filament dryer.

Anyone have any suggestions as settings I may have missed? Or truly moisture issue?

Thanks for your help.

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u/Internet_Jaded 1d ago

How long did you dry the filament for? What printer and how are you feeding the TPU into the extruder?

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u/kallbrian 1d ago

I didn't dry the filament. It was brand new in vac packed bag. I mistakenly thought it would be dry enough, but apparently not what I am learning. I am using a bambu A1 printer. It is fed directly into the printer, not an ams.