SUNLU S4 Pro Dual-Zone 3D Printer Filament Dryer, 4-Spool, 380W, 85°C

$125.99

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Product description

sainsmart falament dryer s4 pro Dual-Channel Independent Heating temperature range of 45-85℃

professional annealing, dual control on one screen,independent temperature control humidity control

FAQ1

Name: SUNLU S4 Pro Dual-Zone 3D Printer Filament Dryer, 4-Spool, 380W, 85°C
Brand: My Store
Price: 125.99 USD
Availability: InStock

1. How can I tell if my filament needs drying?

Common signs of moisture include popping or crackling sounds, excessive stringing, bubbles, rough surfaces, and inconsistent extrusion. Drying the filament before and during printing can help reduce moisture-related print issues, although results may also depend on printer settings and filament condition.

2. What makes the S4 Pro different from a single-chamber filament dryer?

The S4 Pro has two thermally separated chambers with independent 45-85°C temperature control. You can dry different materials at different temperatures simultaneously without applying one setting to every spool.

3. How many filament spools can it hold?

The S4 Pro holds up to four 1 kg spools, with capacity for two spools or 2 kg of filament on each side. It supports 1.75, 2.85, and 3.00 mm filaments.

4. Can I print directly from the dryer?

Yes. The feed-through ports allow filament to remain inside the chamber while being supplied to your printer. This helps limit moisture exposure during long prints and multi-printer workflows.

FAQ2

5. Which filament materials are supported? The S4 Pro supports commonly used and moisture-sensitive materials, including PLA, PLA Plus, PLA Meta, PETG, ABS, TPU, PA, PC, and Nylon. Always follow the filament manufacturer’s recommended drying temperature and duration.

6. What are the three operating modes

M01 Timed Drying: Runs a standard drying cycle for the selected duration
M02 Annealing: Provides a controlled 70-85°C environment for compatible printed parts
M03 Humidity Control: Monitors chamber humidity and automatically activates heating when needed

7. How does Smart Humidity Control work? In M03 mode, you can set an activation threshold between 30% and 50% RH. When chamber humidity reaches the selected level, heating starts automatically and stops when humidity falls to 25%, helping protect stored filament from absorbing moisture again.

8. Can the S4 Pro anneal finished 3D prints? M02 mode provides a controlled 70-85°C chamber environment for compatible functional prints that require approximately 2-3 hours of annealing. Because annealing requirements vary by material and model geometry, always follow the material manufacturer’s recommendations and verify that the printed part can withstand the selected temperature.