Drying Filament in 2026: When a Box Is Enough and When You Need an Active Dryer

Wet filament often looks like incorrectly set retraction, but the cause is usually in the material. This article explains the symptoms in PLA, PETG, TPU, and nylon, when a drybox with silica gel is enough, and when an active dryer or AMS with active drying is worthwhile.