In the 3D printing process, the moisture content of the filament is a crucial factor determining print quality. When air humidity is too high, plastic filaments absorb moisture, leading to problems such as bubbles, stringing, and surface roughness during printing, thus affecting model accuracy and mechanical strength.

1. Differences in Moisture-Absorbing Material Characteristics
Different types of filaments have different moisture absorption properties.

For example, PLA, PETG, and PA (nylon) are highly hygroscopic materials; they can absorb considerable moisture after being exposed to air for several hours.

ABS, HIPS, and TPU have relatively lower moisture absorption, but prolonged exposure can still affect printing stability.

2. The Impact of Moisture Content on Printing Performance
When the internal moisture content of the filament is too high, the heating of the printing nozzle causes the moisture to vaporize, producing bubbles and uneven spraying.

This leads to reduced interlayer adhesion, pits or rough textures on the surface, and in severe cases, even nozzle clogging.

3. Humidity Control and Storage Recommendations

Filament should be stored in a dry, sealed bag or moisture-proof box with a desiccant.

Before printing, it can be dried at a low temperature (40°C–60°C) for 3–6 hours using a dedicated dryer to restore optimal printing performance.

Humidity control is crucial for ensuring the quality and stability of 3D printing filament.

ACO strictly controls the moisture content of materials during production and packaging to ensure that each batch of filament has stable printing performance and excellent appearance before leaving the factory.