A filament dryer is a device that heats filament spools to 40–100 °C to evaporate absorbed moisture. It is the standard solution for hygroscopic materials (PA, PC, PETG, TPU) whose print quality degrades when wet.
How it works
The dryer chamber holds one or more spools, circulates warm air and vents the moisture. Temperature control is the key spec: fixed "warm" dryers can't properly dry nylon (80 °C) or PC (100 °C).
Drying settings by material
| Material | Temperature | Time |
|---|---|---|
| PLA | 45–50 °C | 4–6 h |
| PETG | 65 °C | 4 h |
| ABS / ASA | 80 °C | 4 h |
| PA / PA-CF | 80 °C | 8 h |
| PC | 100 °C | 6 h |
| TPU | 70 °C | 4 h |
Signs of wet filament: hissing, bubbles, stringing, brittle parts. See the full drying chart for details.