SUNLU S4 filament dryer for 4 spools 70°C PTC LCD touchscreen Fila Dryer S4

The SUNLU FilaDryer S4 is a filament dryer designed for 3D printing, capable of drying up to four 1 kg filament spools at the same time. Its chamber measures 450 × 210 × 211 mm, which suits multicolour printing or running several printers in parallel, as it provides eight filament outlets.

A PTC heater with up to 330 W reaches 50 °C in roughly 30 minutes and operates at a maximum of 70 °C, making it suitable for demanding materials such as PA and PC. An integrated humidity control system starts drying automatically when humidity rises above the set range of 30 to 50 percent and stops once optimal conditions of around 25 percent are reached.

The touchscreen interface includes preset profiles for PLA, ABS, PETG, TPU, PA and PC. The dryer supports filaments of 1.75 mm, 2.85 mm and 3.00 mm diameter and has a triple safety system combining a PTC heater, a temperature sensor and software protection.