SUNLU FilaDryer S4 Pro

SUNLU FilaDryer S4 Pro: dual-chamber filament dryer

The SUNLU FilaDryer S4 Pro keeps your filaments dry, stable and ready to print. It has two independent chambers, each with its own heating system, so you can dry two different materials at the same time with different temperatures and times. It also works as an annealing oven for parts printed in engineering filaments.

Key features

• Two independent chambers: thermal insulation panels split the interior into two separate zones, so one material doesn't affect the other.
• Precise temperature control: two independent heating circuits, adjustable from 45 to 85 °C in each chamber.
• Professional annealing mode: holds a stable 70–85 °C. Annealing for 2–3 hours after printing improves the mechanical strength and durability of parts made from engineering materials.
• Smart humidity control: the dryer monitors the humidity inside and switches on automatically when it reaches the set range (30–50%). It stops once humidity falls to 25%, so the filament doesn't reabsorb moisture.
• Large capacity: holds up to 4 standard 1 kg spools, two per chamber.
• One screen for both chambers: control and monitor the temperature and status of each zone in real time from a single panel.
• Print straight from the dryer: filament outlets let you feed your printer while the material stays dry.
• Triple safety protection: PTC heater, metal-shaft fan, dual thermal protection switches and software temperature control.

Technical specifications