SUNLU FilaDryer S4 Filament Dryer

The SUNLU FilaDryer S4 Filament Dryer revolutionizes 3D printing workflow with its industry-leading 4-spool capacity and intelligent humidity control technology. This professional-grade filament dryer eliminates moisture-related printing issues while enabling seamless print-while-dry functionality through eight strategically placed filament outlets and PTFE tubes. Equipped with a powerful 350W PTC heater and triple-fan circulation system, the S4 achieves optimal drying temperatures up to 70°C with exceptional efficiency—heating 6.9 times faster than previous models while maintaining precise ±3°C temperature balance throughout the chamber.

Designed for serious makers and multi-printer setups, this smart dryer features pre-configured settings for all major filament types and advanced humidity monitoring that automatically activates when moisture levels exceed 50%, dropping to a power-saving 80W during maintenance mode. The large touchscreen interface and comprehensive safety systems make professional filament management accessible to users of all experience levels.

Key Features:

Industry-Leading 4-Spool Capacity: Internal chamber (450×210×211mm) accommodates four 1kg filament spools simultaneously, perfect for multi-color printing, bulk drying, and managing diverse material libraries in professional environments.

Intelligent Humidity Control: Advanced humidity sensor with automatic activation when levels reach 50%, maintaining optimal storage conditions at 25% humidity to prevent secondary moisture absorption and ensure consistent print quality.

High-Efficiency Heating System: 350W PTC heater with triple-fan circulation (2 side fans + 1 heating fan) achieves 70°C maximum temperature with 6.9x faster heating compared to standard dryers while maintaining ±3°C temperature uniformity.

Print-While-Dry Technology: Eight filament outlets (4 top, 2 each side) with included PTFE tubes enable direct feeding to up to 4 printers simultaneously, eliminating workflow interruptions and maintaining continuous productivity.

Smart Preset Controls: Pre-configured temperature and time settings for PLA, ABS, PETG, TPU, PA, and PC based on extensive testing data, plus manual adjustment ranges (35-70°C temperature, 0-99 hours timing) for custom materials.

Professional Safety Features: Triple protection system with PTC thermal cutoff, dual-stage temperature switches, and software monitoring, plus gel-coated rollers to prevent spool deformation during extended drying cycles.

Specifications:

Capacity: 4 x 1kg filament spools (max spool dimensions: 75×206mm)

Internal Dimensions: 450×210×211mm

External Dimensions: 458×218×312mm (including tripod base)

Weight: 4.8kg net / 5.5kg gross

Power: 350W PTC heater (330W heating power)

Input Voltage: AC 110V~240V 50Hz/60Hz universal

Temperature Range: 35-70°C adjustable

Heating Time: Reaches 50°C in under 30 minutes, 70°C in under 5 minutes

Power Consumption: 400W during heating, 80W maintenance mode

Humidity Control: 30-50% adjustable activation threshold, maintains 25% target

Timer Range: 0-99 hours

Control Interface: Large LCD touchscreen with 1-second response time

Safety Features: Triple protection system (PTC cutoff, dual-stage switches, software monitoring)

Filament Compatibility: 1.75mm, 2.85mm, 3.0mm diameters

Material Support: PLA, PLA+, ABS, PETG, TPU, PA, PC, Nylon, and specialty filaments

Included Accessories: 4×8cm PTFE tubes, 2×100cm PTFE tubes, silicone plugs, clips, user manual

Warranty: 1-year manufacturer warranty

Colors Available: Black, White