Cardboard Spool Box - Extensible

Give your empty filament spool cores a new life! This model transforms the cardboard tube from a filament spool into a practical storage box with a threaded base and lid.

The design is easy to print and assemble — simply insert the printed parts into the inner cardboard tube of your spool core. It’s also extendable, allowing you to stack or combine multiple sections to create a larger container.

Perfect for storing small tools, screws, SD cards, or 3D printer accessories. This project promotes upcycling and helps reduce waste while keeping your workspace organized.