wtf is filament_spool_holder?

This project is a 3D-printable spool holder designed to sit inside an airtight container, keeping your 3D printing filament dry while you use it. If you've ever left a spool of filament out and come back to it becoming brittle or snapping mid-print, this solves that problem by letting you print directly from a sealed environment. The design holds the spool securely inside a container you seal yourself, presumably something like a large plastic bin or bucket. The filament feeds out through what is likely a small hole or fitting in the lid, letting your printer pull material while the bulk of the spool stays protected from humid air. The repository contains the 3D model files you need to print and assemble the holder. This is built for 3D printing enthusiasts, especially those working with materials like nylon or PETG that absorb moisture from the air and degrade quickly. If you live somewhere humid or just don't go through filament fast enough to finish a spool before it starts absorbing water, this is for you. The blog post linked in the project has the full assembly instructions. The README itself is quite minimal, pointing you to the maker's website for the actual details on how to put it together. The project appears to come from Maker's Pet, who seems to produce various 3D printing accessories and guides.