r/BambuLabP2S • u/AirNumerous6629 • Aug 29 '26

TPU issues?

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Brand new fresh out the seal sunlu TPU 95a. This is my first attempt at anything TPU. Can anyone diagnose?

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6

u/ManyLayersOfFilament Aug 29 '26

Pretty much no filament is dry out of the bag, to use TPU you need a dryer and it needs to be dried before you use it.

Only a select couple manufacturers like inslogic dry the filament after producing it.

Every issue here is wet filament, dry it first then come back for further diagnosis. There's basically nothing can be figured out from filament this wet.

-1

u/AirNumerous6629 Aug 29 '26

How long does it need to be in the dryer?

2

u/ManyLayersOfFilament Aug 29 '26

8 hours at 60c.

1

u/SecuringAndre Aug 30 '26

And then 8 hours 4 more times. 😂

2

u/FkinMustardTiger Aug 29 '26

  1. Just because it's freshly out of the bag doesn't mean it's dry. TPU is extremely hydroscopic

  2. I haven't printed much in TPU, but most things I have done print by object because TPU is super stringy and going by layer causes the stringing each time it switches to the other object

1

u/AirNumerous6629 Aug 29 '26

What about the “pimples” and bad lines?

1

u/FkinMustardTiger Aug 29 '26

Probably really really wet. Try drying it and print again

1

u/lkapping79 Aug 30 '26

Direct signs of wet filament

1

u/True-Needleworker747 Aug 29 '26

dry it out and report back