AMS (Automatic Material System) and dry boxes are often confused. They do different jobs — here's the breakdown.
What each one does
| AMS-style system | Dry box | |
|---|---|---|
| Purpose | Auto-load/switch spools, multi-color printing | Keep filament dry during storage & printing |
| Compatibility | Often proprietary (RFID/lock-in) | Universal — any 1.75 mm spool |
| Drying | Some models have drying; many don't | Passive (desiccant) or active (heated) |
| Cost | $150–400 per unit | $30–120 |
Do you need both?
Print multi-color? You want an AMS — but check if it accepts third-party spools. Print functional parts in PA/PC? You need a dry box regardless. Most professional users end up with: one AMS (color) + one heated dryer (engineering materials).
The open-filament note
Proprietary AMS ecosystems often favor their own spools. VOXFIL stays open-compatible 1.75 mm — works with open AMS systems and every dry box, without the premium markup.