Filament is hygroscopic. Leave a spool out in a humid room and it slowly absorbs moisture from the air. The result is more than just cosmetic: wet filament causes stringing, popping, rough surfaces, and weak layer adhesion. If your prints suddenly look worse with the same settings, moisture is often the culprit.
Signs Your Filament Is Wet
- Popping or crackling sounds during extrusion
- Excessive stringing and rough surfaces
- Brittle filament that snaps easily
- Weaker layer adhesion and more failed prints
Recommended Drying Temperatures
| Material | Drying Temp | Time |
|---|---|---|
| PLA+ | 45-50°C | 4-6 hours |
| PETG | 55-65°C | 4-6 hours |
| ABS | 65-75°C | 4-6 hours |
| TPU 95A | 45-55°C | 6-8 hours |
Drying and Storage Tools
The ANTINSKY FilaBox is a compact drying box that keeps a single spool dry while you print, feeding the filament directly from a controlled environment. For larger collections, the ANTINSKY FDC12 Filament Dryer Cabinet provides professional-grade drying and storage for multiple spools at once, with adjustable temperature settings for different materials.
A Simple Storage Routine
- Dry new spools before the first use
- Store open spools in a sealed container with desiccant
- Re-dry spools that have been out for more than a few days
- Keep a drying box running for the spool you are actively printing
Consistent drying is one of the cheapest upgrades you can make to your print quality. The difference between a wet spool and a dry one is often the difference between a failed print and a clean one.