SUNLU Filament Dryer S2 1.75–3.0mm Spool Dry Box — 4.6" Touchscreen, Dual-Plate 360° Airflow (Black)

The SUNLU Filament Dryer S2 is a compact dry box that removes moisture from PLA, PETG, ABS and other filaments using 360° heated airflow and an easy-to-read 4.6" touchscreen.

Keeping filament dry reduces stringing, clogs and adhesion problems during 3D printing. The S2 combines dual heating plates with an internal fan for even circulation, a precise temperature/humidity monitor, and one-touch controls so you can tailor drying time and heat to each material. Its dimensions and spool capacity make it compatible with most 1.75 mm and 2.85–3.00 mm filaments while giving clear feedback on drying conditions.

How does the S2 remove moisture from filament?

The dryer uses two heating elements and an internal fan to create uniform 360° circulation around the spool, speeding up moisture removal. Temperature and humidity sensors feed back to the control system so the unit adapts while running.

• Dual heating sheets plus fan for all-round airflow
• Faster warm-up and drying compared with single-sided heating
• Real-time humidity and temperature monitoring

What filament types and spool sizes will it fit?

S2 supports common filament diameters and most brand spools. The internal reel area fits spools up to approximately 210 mm diameter and 85 mm height, accommodating PLA, PETG, ABS, TPU, Nylon, PA and PC in 1.75 mm and 2.85–3.00 mm formats.

• Spool capacity: up to 210 × 85 mm (diameter × height)
• Compatible diameters: 1.75 mm, 2.85 mm and 3.00 mm
• Works with most major filament brands and materials

Can I control drying time and temperature for different materials?

Yes — the S2 provides adjustable temperature up to 70°C and customizable drying durations from the touchscreen. That flexibility lets you set gentler conditions for PLA or higher, longer cycles for hygroscopic materials like Nylon or TPU.

• Maximum settable temperature: 70°C
• Touchscreen displays temperature, humidity, filament type and countdown
• One-touch start and simple parameter adjustments for tailored drying

How easy is it to operate and monitor while printing?

The 4.6" LCD touch panel shows all key data at a glance — temperature, humidity, remaining time and filament type — and an LED indicator shows current operating status. Setup is straightforward: place the spool, choose settings and press start.

• Clear large touchscreen for quick adjustments and monitoring
• LED status indicator for operation visibility
• Simple one-click operation for fast, repeatable drying cycles

Who is this for? The SUNLU Filament Dryer S2 is designed for hobbyists, prosumers and small workshop users who want steady, predictable print results by keeping filaments dry. It’s useful for makers who switch materials frequently, print moisture-sensitive filaments, or need a compact, easy-to-use storage and drying solution that fits most standard spools.

Key specifications and benefits at a glance:

• 360° heating with dual heating sheets and fan for even drying
• Adjustable temperature up to 70°C and programmable drying times
• Large 4.6" touchscreen with temperature, humidity, filament type and countdown display
• Compatible with 1.75/2.85/3.00 mm filaments and most spool sizes up to 210×85 mm
• Easy one-click operation and LED operation indicator

If you have questions about fit or settings for specific materials, SUNLU provides after-sales support and technical guidance to help you dial in the best drying profile for consistent print performance.