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

Moisture in Filaments? - Recreus

Printing issues related to filament affected by humidity

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

Moisture in Filaments? - Recreus

Printing issues related to filament affected by humidity

✅ 【Adored Chameleon Filament Series】 - A color-changing material responsive to different light and angles. This filament is composed of special

FLASHFORGE PLA Filament 1.75mm +/- 0.02mm Skydiver Blue, Color Changeable 3D Printer Filament 1kg (2.2lbs), Chameleon 3D Printing Filament Changing

Beat Moisture Before It Kills Your 3D Printing Filament

When 3D printing PLA, the first layer has spots where the filament

Keep 3D Filament Dry and Improve Print Quality - Oscar Liang

Moisture vs. flexible filaments - Recreus

Moisture in new printer filament - Thrinter

How moist filaments will screw up your 3D-printing

Moisture-induced changes in the mechanical behavior of 3D printed

AnkerMake Explore the 3D Printing Frontier - Ankermake Europe

Suddenly bad stringing with PLA – Assembly and first prints