The GratKit 3D Filament Dryer Box Firefly V2.0 is a versatile and efficient tool for any 3D printing enthusiast. With its Tuya App compatibility, users can remotely control and monitor the drying process, ensuring optimal conditions for various filaments like PLA, PETG, TPU, ABS, and Nylon.

One of the standout features is its air heating circulation system, which includes a built-in fan and temperature sensors on both the top and bottom. This ensures even drying and prevents common issues such as clogging, stringing, and brittleness caused by moisture.

The dryer reaches temperatures up to 70℃, making it suitable for a wide range of filaments. The hanging spool design reduces friction during printing and prevents the spool from melting at high temperatures.

Users have praised the quiet operation of the 5015 fan and the convenience of the Tuya App control. The RGB LED lights add a fun touch to the setup, while the mute sound and screen-off functions enhance user experience.

However, some users noted that the exterior plastic feels flimsy, and the manual could be more helpful. Despite these minor drawbacks, the GratKit Firefly V2.0 is highly recommended for its efficiency, versatility, and ability to significantly improve print quality.