Reusable Filament Spool for Refill Filament

This is a reusable 3D-printed filament spool designed to be used with refill filament coils, which are usually cheaper and produce less waste than filaments sold with disposable spools.

I designed this spool because, although some filament brands already offer reusable spools, they are often not compatible with refill filaments from other brands, which are easier to find (for example on Amazon). This project aims to be a more universal solution.

The spool is openable via a threaded connection, allowing it to be easily assembled, disassembled, and reused multiple times.
To ensure compatibility, please note that the internal diameter of the refill filament coil must be at least 80 mm, otherwise it will not fit inside this spool.