For a long time, 3D printing enthusiasts have frequently experienced failed prints due to moisture in the filament. Moist filament can severely affect FDM printing quality, especially for some hygroscopic materials. Addressing this pain point, the professional filament manufacturer SUNLU developed a series of drying box products. In October 2023, SUNLU launched the FilaDryer S4 drying box on the Kickstarter platform. The FilaDryer S4 is the world's first large-capacity drying box, featuring a spacious interior, high efficiency and safety, and even temperature distribution. This crowdfunding campaign received support from a total of 5,956 users worldwide and also set a record for the number of backers in the 3D printing category this year.
With the development of 3D printing technology, users' demands for drying boxes are also changing, requiring larger internal space, more efficient and safer designs, and better temperature control. As a pioneer in the drying box category, SUNLU is the first brand manufacturer to produce drying boxes. The SUNLU drying box series has shipped over 300,000 units globally, consistently ranking first in market share. Performance Features of SUNLU FilaDryer S4:Extra-Large SpaceThe extra-large space design, measuring 458mm*218mm*312mm, can accommodate four 1kg spools of filament. It is equipped with eight filament outlet holes and PTFE tubing to meet the needs of drying multiple filaments and simultaneous printing while drying with multiple printers. The reasonable structure design of the SUNLU FilaDryer S4 makes full use of internal space, reduces heat loss, and achieves high electrical-to-thermal energy conversion efficiency.High Efficiency and SafetyThe PTC heating element with a three-fan design greatly improves heating efficiency, allowing rapid heating up to the 70℃ temperature range. The PTC heater has a heating power of 330W, a 6.9-fold increase compared with the SUNLU FilaDryer S2. The S4 uses high-power fans with strong airflow, enabling filaments to be ready for printing just one hour after loading. It allows simultaneous drying and printing, saving waiting time and improving work efficiency.
The FilaDryer S4 is made with high-end materials, using imported molds and high-quality, environmentally friendly PC materials for molding. It features a customized high-end heating plate that is eco-friendly and non-toxic. It supports setting drying times in 1-hour increments, and automatically enters standby mode after drying is complete. The PTC heating plate has a dual-level temperature control switch design, providing double protection. In addition, the rollers are equipped with soft rubber to prevent issues such as jamming caused by minor warping of the wire spool from prolonged high-temperature baking. The design layout maintains a safe temperature gap, reducing heat transfer to the outer casing. All of this is designed to make safety even safer. Rapid heating: In a comparison of heating to 70°C, the SUNLU FilaDryer S4 demonstrates significant savings and speed improvements. This can save users a substantial amount of waiting time.
Temperature BalanceUnder the action of three fans, internal heat circulates effectively, achieving overall internal temperature balance with a precision of ±3℃. Combined with the design of eight outlet holes, internal moisture can be efficiently expelled, preventing condensation. This ensures that cables, whether fully wound or nearly used up, are surrounded by the target temperature and completely moisture-free. The machine's set temperature matches the measured temperature, providing peace of mind during use.
OmnipotentThe SUNLU Filadryer S4 is compatible with various commonly used filaments such as PLA, TPU, and PETG. It provides optimal drying times and temperatures based on long-term test data. It can also dry special filaments like PA/PC, increasing options while reducing the hassle of settings.Auto Humidity ControlThe SUNLU Filadryer S4 is equipped with a high-precision humidity sensor that displays the real-time internal humidity of the drying chamber. It features an intelligent humidity control mode that automatically starts when the chamber's humidity reaches ≥50%, preventing filaments from getting damp again. The machine also comes with a timer function, so you don't have to worry about energy waste caused by the machine running after drying is completed, giving you peace of mind.
Filadryer S4, as the world's first large-capacity dryer with four reels, fully upgrades multiple dimensions while retaining its original excellent performance, providing an industry-leading solution. Currently, SUNLU Filadryer S4 has gained the support of nearly 6,000 3D printing enthusiasts on the Kickstarter website, with crowdfunding exceeding $600,000, and the retail price is $139.99.
