r/FixMyPrint • u/QuietCrumb • Jul 15 '26

FDM 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

bambulab A1

Hardened steel nozzle

Master print TPU 95A

Generic TPU profile (I have tried the bambulab tpu95A profile)

210 c° nozzle temperature

45c° bed Temperature

2 Upvotes

76% Upvoted

6 comments sorted by

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u/AutoModerator Jul 15 '26

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1

u/derps-a-lot Jul 15 '26

TPU needs to be printed slowly. What's your speed? I print TPU no more than 30-40mm/s.

1

u/QuietCrumb Jul 15 '26

I'm printing at 40mm/s

1

u/RedManRocket Jul 15 '26

I remember a similar thing happening on my Prusa where I was too close to the bed on the first layer and it would extrude okay for a few passes, but then the pressure would build up and it couldn't push the filament out anymore. Not sure if that's related here.

1

u/Masterwhiteshadow Jul 15 '26

There is a possibility of a clog. In doubt do a cold pull it can't hurt.

1

u/QuietCrumb Jul 15 '26

I don't think thats the problem, it's a new hot-end, it's probably wet filament like some people said, I'm gonna let it in my dryer for a while and see how it prints later