Tired of moist filament ruining your 3D prints with stringing, bubbles, and weak layers? In this 2026 guide, we compare the best SUNLU filament dryer boxes:
-
S2 – compact, ideal for beginners and single spools
-
S4 – high-performance, perfect for multi-color workshops and 4×1 kg capacity
-
E2 – premium, up to 110°C for technical filaments like Nylon, PC, PA-CF, plus true annealing
Discover the differences in temperature range (70°C vs. 110°C), heating speed, capacity, power consumption, and real-world performance. Whether you're printing PLA/PETG on a budget or producing functional parts with carbon-fiber composites, we provide tailored recommendations, pros and cons, and buying tips.
All models support printing while drying via PTFE tubes and work excellently with Bambu Lab AMS setups. Upgrade your setup and say goodbye to moisture issues for good!