4L Multigrain Box Conversion: 3D-Printed Filament Storage Base

This is a 3D-printed filament storage base designed to transform a commercially available 4L multigrain storage container, maximizing the bottom space for desiccant storage and effective humidity control. Suitable for creators seeking a simple yet practical solution, it supports pure 3D printing or enhancement with structural accessories.

✅ Key Features:

• Maximized Desiccant Storage Space
  Compact structure with a large bottom capacity for desiccant granules, enabling consistent and effective humidity control to extend filament lifespan.
• Fully 3D Printable | Modular Upgrades Supported
  The default design is directly printable. Optional add-ons include:
  • PC4-M6 Pneumatic Fitting: Connects to the 3D printer's filament inlet for closed-loop routing.
  • Four 10×19×5mm bearings: Installed in the bottom cylindrical section to enhance smooth spool rotation.
  • Bearingless versions are recommended to use a velvet print (e.g., matte or high-friction surface) to increase support and stability.
• Three Interchangeable Lids
  Offers three lids with different structures and opening mechanisms for versatile usage scenarios.

• Hygrometer Mounting Position
  Compatible with small electronic hygrometers measuring 48 × 28.6 × 15.2 mm.

  ⚠ It is recommended to place the hygrometer on top of the storage box for a more accurate reading of the ambient filament humidity. The bottom may show lower readings due to the presence of a large amount of desiccant.