Why Moisture Ruins Prints
Most thermoplastics are hygroscopic. When wet filament passes through a 200C+ hotend, trapped water vaporizes instantly, expanding 1,600x in volume. This causes popping, bubbling, and surface defects.
Filament Hygroscopic Levels
| Filament | Level | Max Humidity |
|---|---|---|
| PLA/PLA+ | Low | 50-60% RH |
| PETG | Moderate | 40-50% RH |
| TPU 95A | High | 30-40% RH |
| ABS | Moderate | 40-50% RH |
Signs of Wet Filament
Audible
- Popping and crackling from nozzle
- Hissing steam release
Visual
- Surface bubbling, stringing
- Dull finish, inconsistent extrusion
Mechanical
- Reduced layer adhesion
- Brittle parts
Drying Methods
| Method | Temp | Time | Cost |
|---|---|---|---|
| Filament Dryer | 40-70C | 4-8h | 35-60 EUR |
| Food Dehydrator | 40-65C | 4-6h | 30-50 EUR |
| Convection Oven | 40-55C | 4-6h | Free |
Drying Temperatures
| Filament | Temp | Duration |
|---|---|---|
| PLA/PLA+ | 45-50C | 4-6h |
| PETG | 60-65C | 4-6h |
| TPU 95A | 55-60C | 6-8h |
| ABS | 70-80C | 4-6h |
Storage Solutions
Active: Filament Dryer Box
The ANTINSKY FilaBox maintains controlled temperature and humidity. Features adjustable 35-70C range and humidity display.
Passive: Vacuum Sealing
- Vacuum seal with moisture barrier bags
- Include 10g+ silica gel per spool
- Store in cool, dark place
Conclusion
A 35 EUR ANTINSKY FilaBox eliminates 80% of print quality issues. Visit InnoStation 3D.