A modular filament holder specially designed for organizing 3D printing consumables, featuring a 12mm-diameter galvanized steel tube as its supporting frame and 3D-printed connectors for flexible assembly. It neatly stores various types of filament spools, eliminating clutter and enabling quick access to materials.

1. Support tubing: Use only 12mm outer-diameter galvanized round tubing; tube length can be customized to fit your available space.

2. Stacking recommendations: A three-tier structure is recommended; avoid exceeding three tiers, as excessive height raises the center of gravity, reduces stability, and increases the risk of tipping.

3. Modular design: All components are standardized and universally compatible, allowing you to easily add or remove support slots and adjust layer spacing. The system is simple to disassemble and reassemble, making it ideal for moving or rearranging your setup.