This filament spool core is tailored for spools with a 55mm center diameter(Aceaddity filament), offering a stable and secure fit. It's a modified version of a design initially created for Overture spools, aimed at enhancing fit and functionality. See the original design here.

The core is originally printed with PETG, but it is also suitable for PLA and other filament types. To install, push it into the spool's center until resistance is felt; then, apply a gentle force from the other side to secure it in place. This design ensures the core remains fixed during use, reducing printer strain and improving filament feed efficiency.