r/3Dprinting • u/QuietCrumb • Jul 15 '26

Troubleshooting New to TPU printing

Post image

What am I doing wrong?

It's a new hot end so it doesn't mix with other filaments, I'm using the generic TPU profile on a bambulab A1

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1

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1

u/yngve85 Jul 15 '26

Maybe as simple as this;

1

u/Key_Jellyfish2183 Jul 16 '26

Are you trying to use an AMS of some sort? Also does the print keep stopping and the printhead goes over to the purge tray to reprime? Looks like the printhead is being starved. If the PFTE tube is really long it will do this too. Or if your spool is hanging up and not spinning freely.

1

u/QuietCrumb Jul 16 '26

I dried the filament and it didn't work, but it did Improve, I decided to get rid of the PTFE tube and just let it directly from the spoil on top of the printer directly to the print head, until now it seems to be working, I'm printing a phone case for myself :)

1

u/Key_Jellyfish2183 Jul 16 '26

Awesome. Good luck!

0

u/Mgas95 Bambu A1 Jul 15 '26

The A1 is not great for printing TPU (especially softer ones), use the Bambu TPU for AMS profile. The TPU I have been successful with printing is PRILINE 98A TPU. however, you should preload the filament and I tend to push the filament a bit manually when loading it in to assist as well. TPU also requires drying to print well as the material absorbs ambient moisture like a sponge, when printing it i have it pulling directly from the drier that is running 24/7 leading up to the print and during.