Esun spool recycling system

If you also find yourself buried in empty cardboard filament spools after every 3D print, don’t toss them out just yet! Let’s give them a second life — and a pretty clever one at that. With a bit of creativity and a few 3D-printed parts, that plain cardboard core turns into a super handy container, complete with a screw-on lid. It’s perfect for holding loose screws, runaway electronic components, or just helping you bring a little order to your creative chaos. And it doesn’t stop there: thanks to a connector ring, you can link multiple tubes together to make the container as long as you want. One module today, a storage tower tomorrow! It’s the perfect way to recycle with style — practical, sustainable, and with that signature maker flair. Print it, build it, use it, and maybe even brag about it a little: turning waste into something awesome is no small feat! Just a quick tip before you dive in: make sure to clean the inner and outer edges of the cardboard tube thoroughly — it’ll make