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Why filament dry box is so important?
Most of FDM 3D filament is typically hydrophilic, meaning it absorbs moisture from the air.Especially in humid regions, rainy weather, or expose to air for a long time.
Wet filament will become brittle and bring bad printings, such as bubbling,splitting,stringing,rough surface,low layer bonding,swell and clogging,bumps,warped edge,bad adhesion,popping when printing,and other problems.
The filament dryer is a great way to remove moisture, and make your ruined filament live again!