I REPLACED DESICCANT in my AMS for the LAST TIME!

Keeping Filament Dry Inside the Bambu Lab AMS

The video presents a cost-effective and sustainable method to keep filament dry inside the Bambu Lab AMS (Automatic Material System), which functions as a filament dry box using desiccant packs.

Key Tips and Advice

Difference Between Dry Box and Dryer

• Dry box: Uses desiccant to absorb moisture and keep filament dry.
• Dryer: Uses heat and airflow to remove moisture from filament.

Issue with Bambu Lab Desiccant Packs

• The original desiccant packs are single-use and not rechargeable.
• Once saturated, they must be replaced, which can be inconvenient and costly due to shipping.
• Saturated desiccant changes from white powder to a squishy yellow gel.
• Humidity levels inside the AMS can be monitored via Bambu Studio (scale 1-5) or visually by checking the desiccant.

Reusable Desiccant Solution

• Use 3D printed, refillable desiccant containers designed to fit inside the AMS.
• The featured model is the “Spillproof AMS Desiccant Box” by AeonJoey, which holds silica gel beads and a round hygrometer.
• Containers have a mesh grille for airflow and secure backs to prevent spills when removing.
• Silica gel beads used are color-indicating (orange when dry, green when saturated) and can be recharged by microwaving on defrost or oven baking.
• This approach allows reusing the desiccant beads multiple times, reducing waste and cost.

Printing and Installation Tips

• The grille is printed using a slicer trick with high grid infill and zero top/bottom layers for airflow.
• After printing, remove supports, install the hygrometer, fill with silica gel beads, and insert into the AMS.
• Remove old Bambu Lab desiccant packs if saturated to avoid potential leakage.

Benefits

• Maintains low humidity inside the AMS, protecting filament quality.
• More economical and environmentally friendly than single-use packs.
• Compatible with new filaments requiring drying, like Bambu Lab’s PETG HF filament.

Notable Products and Resources

• Bambu Lab AMS unit and original desiccant packs.
• Spillproof AMS Desiccant Box by AeonJoey (3D printable model).
• Orange-to-green color-changing silica gel beads (available on Amazon).
• Round hygrometers for humidity monitoring.
• Links to the model files and products provided in the video description.

Speaker

Bryan from the BV3D Channel, focused on 3D printing tips and tutorials.