eSun Launches Its First Four-Spool Filament Dryer, the eBox Plus That Heats to 80°C
The new dryer combines dual heating elements, active dehumidification, and dry-while-printing functionality. It's listed for $149.99 in the U.S., but isn't in stock yet.
Filament and dryer manufacturer, eSun, just launched the eBox Plus ($149.99), a new filament dryer capable of drying up to four spools simultaneously at temperatures reaching 80 °C. The eBox is their first four-spool dryer, adding to their range of single-spool dryers like the eBox Lite and eBox Pro.
eSun is putting particular emphasis on moisture management, with an active dehumidification system designed to remove humid air from the drying chamber. The eBox Plus uses two PTC heating elements and dual fans to circulate warm air throughout the chamber, with what eSun describes as 360-degree airflow for more even heating. The active dehumidification system monitors humidity inside the chamber and removes moisture-laden air, while a separate, removable desiccant box provides additional moisture control.
Active moisture removal isn’t new to multi-spool filament dryers. Competing models, such as the Flashforge VDS, Creality SpacePi X4, and Sovol SH03, also feature mechanisms for removing moisture from the drying chamber. Where the eBox Plus differs, and arguably falls short compared to the other models, is in its use of a single chamber for all four spools rather than two independently controlled compartments. This means all four spools are subject to the same drying conditions, limiting its usefulness for anyone looking to dry different materials simultaneously. eSun itself specifies drying four spools of the same material at once.
The maximum temperature of 80 °C is sufficient for common filaments such as PLA, PETG, ABS, and TPU, as well as some engineering-grade materials. However, it falls short of the higher drying temperatures recommended for certain polycarbonate blends, carbon-fiber composites, and high-performance polymers such as PEI.
The dryer also features a dry-while-printing function, allowing filament to feed directly from the chamber. eSun highlights broad compatibility with printers from manufacturers such as Bambu Lab and Creality. For simpler operation, a Master Mode offers preset drying parameters for commonly used filaments, reducing the need to configure temperature and drying duration manually.
The eBox Plus is listed on eSun’s U.S. store for $149.99, although it was marked out of stock at the time of writing. At that price, it faces competition from the Sovol SH03, which offers two independently controlled drying chambers and a slightly higher maximum temperature of 85 °C, albeit at a slightly higher regular price of $159.
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