STOP Moisture Problems in Your Bambu AMS - From Wet Filament to Perfect Prints

Problem explained

Filament absorbs moisture from air. Damp filament causes print defects such as:

• Popping/crackling noises during printing
• Increased stringing on travel moves
• Brittle filament that snaps at sharp bends
• Weak or inconsistent layer adhesion

Keeping filament dry is critical for consistent, high‑quality prints.

Solution demonstrated

Reusable dry pods filled with color‑indicating silica beads are used to keep filament dry. Pods can be placed in the Bambu AMS or inside the filament spool.

• Pods are refillable; use a funnel to add beads and close the lids tightly to avoid spills.
• Bead color indicates saturation:

  Orange/clear = dry Dark = saturated

Practical tips & product recommendations

• Print pods in PETG (higher heat resistance) rather than PLA.
• Use transparent filament for the spool so you can more easily see bead color changes.
• The Bambu AMS has seven pod slots — you can use as many as you want; the presenter uses all seven for optimal drying.
• Brand mentioned: Dry & Dry silica beads (referenced in the video description).
• Optional: use a hygrometer to monitor humidity (Bambu Lab store carries one in the video reference).

Regeneration (how to dry saturated beads)

Two methods demonstrated:

• Oven: preheat to about 200°F (≈93°C) and bake beads for ~2 hours.
• Microwave: use the defrost setting for about 10 minutes (presenter prefers this for speed).

After drying, refill/return the beads to the pods for continued use.

Effects reported

Users saw immediate improvements in print quality:

• Reduced stringing
• Smoother walls
• More consistent prints overall

Quick how‑to (steps)

1. Print PETG dry pods.
2. Fill pods with silica beads (use a funnel), then close lids tightly.
3. Place pods into AMS slots or inside the filament spool.
4. Monitor bead color or use a hygrometer.
5. When beads turn dark, dry them in an oven (200°F / 2 hrs) or microwave (defrost ~10 min).
6. Return pods to the AMS for continued filament drying.

Main speakers / sources

• Video presenter (unnamed channel creator demonstrating the workflow)
• Products/brands referenced: Bambu P1S (printer), Bambu AMS (Automatic Material System), Dry & Dry silica beads, Bambu Lab (hygrometer/product store)