3D-Printed Filament Dehumidifier

This 3D-printed filament dehumidifier is a practical and cost-effective alternative to commercial boxes, which are often expensive and bulky, used to keep filament spools dry. With this DIY project, you can save both money and space. The dehumidifier is designed to fit directly inside the filament spool, maintaining an optimal humidity level thanks to the use of regenerable silica beads and a built-in hygrometer. This ensures that the filament stays dry and ready for use, improving print quality and preventing material degradation due to moisture.

The dehumidifier is equipped with a special system of channels that allow air to circulate effectively from top to bottom and vice versa. This design ensures that moist air is drawn in and passes through the silica beads, while dry air is released, creating a continuous air exchange within the spool. This maximizes the efficiency of the dehumidification process.

Key Benefits:
- Cost savings: The 3D-printed dehumidifier is a much more affordable solution compared to the plastic boxes available on the market.
- Space-saving: The compact design allows it to fit directly into the spool, eliminating the need for bulky external containers.
- Regenerable materials: It uses easily regenerable silica beads, reducing maintenance costs and ensuring long-term use.
- Easy monitoring: With an integrated hygrometer and thermometer, you can easily monitor the humidity and temperature levels inside the spool. 

Step-by-step instructions:

Step 1: Download and print the dehumidifier
Start by downloading the 3D file of the dehumidifier and printing all parts using PETG filament. This type of filament is more resistant to moisture compared to others, ensuring the dehumidifier lasts longer.

Step 2: Remove the bottom
Once printing is complete, use a utility knife to remove the bottom of the dehumidifier. Be precise with the cut to avoid damaging other parts of the structure.

Step 3: Assemble the sections
After removing the bottom, assemble the printed sections. Ensure that all parts are properly aligned to achieve a solid and compact assembly.

Step 4: Insert the thermometer and hygrometer
Place the thermometer and hygrometer into their designated spaces, allowing you to easily monitor the humidity and temperature levels inside the dehumidifier and spool.

Step 5: Fill with silica beads
Turn the dehumidifier upside down and pour about 50 grams of regenerable silica beads inside. These beads will absorb moisture within the spool. Make sure the beads do not block the screw holes or air channels to allow proper airflow.

Step 6: Secure the bottom
Secure the bottom of the dehumidifier using 4 M2x12 screws. Ensure the screws are tightly fastened to provide an airtight seal, preventing moisture from entering.

Step 7: Regenerate the silica beads
To regenerate the silica beads, remove the hygrometer and place the dehumidifier in the oven at 50°C for 4-5 hours. This will allow the beads to release the absorbed moisture, restoring their effectiveness.

 
Your dehumidifier is now ready for use. Place it inside the spool and store everything in the original filament box. This way, the filament will stay dry and protected from moisture, saving both space and money compared to conventional plastic boxes.