We’ve seen some interesting innovations with filament holders before, like this entirely 3D printed filament holder, but a mini spool for a 3D pen is definitely a new one.

Using 3D pen filaments with the right thickness and color, it’s possible to create sculptures, toys and other artistic pieces.

A 3D pen is a crafting tool that works kind of like a hot glue gun, except what comes out is warm plastic filament. The ...