Universal Modular Box -Spool Box

I was dissatisfied with existing filament storage solutions. Many of them have awkward shapes, high material consumption, or lack real versatility. This became the starting point for developing my own modular solution.

This project does not aim to be an industry standard — it is a practical experiment focused on efficiency, versatility, and print speed.

Concept and Assembly
The design consists of three main elements:
• Upper and lower threaded body parts,
• A central colored ring.

The central ring is inserted directly into the grooves of the upper and lower parts. In the lower section, a tight friction fit is used (achieved by a difference in diameters), which ensures reliable fixation of the assembly. In the upper section, the clearance is larger, allowing the lid to be easily unscrewed for quick access to the filament. Despite its modular design, when assembled, the box forms a closed body that protects the filament from dust.

Key Design Decisions
• Material Efficiency: The geometry is optimized to reduce plastic usage compared to bulky, traditional container designs.
• Color Ring as a Material Sample: The central ring is printed using the same filament stored inside. It serves as a visual reference for color, texture, and surface finish without opening the box or keeping separate test samples.
• Secondary Use of Components: Rings that are not currently used for storage can be connected using a dedicated H-shaped connector and repurposed as a decorative lamp (coming soon if this project receives community support).

Check out the project in action on YouTube: 

Printing
All components are designed to be printed without the need for supports. Tested on Bambu Lab P1S and A1 printers using Bambu filament. If any issues arise, feel free to leave a comment — I will check and provide guidance.
I need your support to take this project further; I can't do it alone!

My printing settings:

• Nozzle: 0.40 mm
• Layer Height: 0.20 mm
• Infill: 10% (Gyroid)
• Wall Count: 2
• Supports: None
• Bed Adhesion: Brim (applied to the circle part only)
• Brim-Object Gap: 0.20 mm