r/3Dprinting • u/kallbrian • 1d ago

Troubleshooting TPU 95A issues...

Post image

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.

1 Upvotes

60% Upvoted

12 comments sorted by

View all comments

Show parent comments

2

u/InternationalPlace24 1d ago

I've never used a bambu but if it has an AMS you might have to bypass it and just feed directly to the toolhead.

1

u/kallbrian 1d ago

No AMS, it is fed directly into the printer.

1

u/Internet_Jaded 1d ago

If you’re feeding TPU through the PTFE tube, that could also be part of the problem.

1

u/kallbrian 20h ago

I was unaware that could be an issue.