How to Dry PS Filament
PS (Polystyrene) absorbs moisture from the air, causing stringing, bubbles, and weak layer adhesion. Drying before printing eliminates these defects. Below are community-verified settings for any filament dryer.
Dryer Temperature
60°C
Set on iDryer, Sunlu S1, CrealityDrying Time
3h
Minimum recommended durationTarget Humidity
<15%
Inside dryer during dryingSigns your PS filament needs drying
Popping / crackling sounds during printing
Excessive stringing
Bubbles in extrusion
Poor layer adhesion
Inconsistent extrusion
Rough surface finish
Community Drying Presets (1)
Verified settings shared by the 3D printing community. Compatible with iDryer, Sunlu S1/S2, Creality Filament Dryer, Sovol, and EIBOS.
| Title | Rating | Temperature | Duration | Actions |
|---|---|---|---|---|
PS - Default Drying | 60°C | 180 min |
Frequently Asked Questions
What temperature should I set my filament dryer for PS?
Set your filament dryer to 60°C for PS. This applies to iDryer, Sunlu S1, Creality Filament Dryer, and similar devices.
How long does PS need to dry?
Dry PS for at least 3 hours at 60°C. Heavily absorbed spools may need up to twice as long.
Can I print PS directly from the dryer?
Yes — printing directly from an active dryer is the best approach for moisture-sensitive filaments. iDryer supports pass-through printing with active drying during your print.