First try with TPU. Looks like it's absorbed moisture. Can someone confirm that these are symptoms of moist filament? : r/3Dprinting

Is there a 3D Printer filament that is both nontoxic (fumes) and

A case study in wet filament : r/prusa3d

Printing Guidance】The Influence of Filament Dryness and Humidity

Advanced guide to printing PETG Filament

Is my TPU wet? : r/3Dprinting

Coatings, Free Full-Text

SainSmart Orange to Yellow Color Change 95A TPU

The Wet Filament Myth Needs to End : r/3Dprinting

Beat Moisture Before It Kills Your 3D Printing Filament

How to Dry & Store 3D Printer Filament: Storage Solutions