3D Printable Filament Holder – Aded two new bases, so now you can connect two or more spool holders together. Wall mountable or for use on the. A modular, inexpensive, functional, easy to source, mass filament storage and spool holder system. Discover 3d models for 3d printing related to filament spool holder. 1m+ visitors in the past month Download your favorite stl files and make them with your 3d printer. This is a 4×2 6u gridfinity filament spool holder that uses skateboard bearing spool. Discover 3d models for 3d printing related to filament holder.