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

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

How to Succeed when 3D Printing with TPU and Flexible Filament

Is my tpu under extruding? Or is there too much moisture in it

Printing issues related to filament affected by humidity

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

Moisture and 3D Printing - Part 2 - Effects of Wet Filament - Magigoo

3D Printing With TPU Dry Vs. Wet Filament

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SainSmart Orange to Yellow Color Change 95A TPU

Beat Moisture Before It Kills Your 3D Printing Filament

Is this a good TPU print? : r/3Dprinting

A case study in wet filament : r/prusa3d

TPU is a material which needs to be dryed. Before drying is 2 days

How bad is wet Filament really? – Tom's 3D printing guides and reviews