Question

additive manufacturing and filament
which of the following is a common symptom of wet or moist filament?
the filament becomes too brittle and snaps easily.
the filament develops bubbles and makes popping or crackling sounds during extrusion.
the filament changes color to a darker shade
the filament becomes more flexible.

Explanation:

When filament has moisture, water vaporizes during the high - temperature extrusion process in 3D printing, forming bubbles and creating popping or crackling sounds. Brittleness is usually due to dryness or improper storage over time, color change is not a typical sign of moisture, and increased flexibility is not related to wetness.

Answer:

The filament develops bubbles and makes popping or crackling sounds during extrusion.