I don't like producing waste, and unfortunately 3D printing involves a lot of smaller or larger plastic waste: brim, supports, failed prints, or filament ends that are difficult to use to print something is one of the problems I face. For now, I'm just separating this waste, believing that something can be done with it. The second, equally important problem to solve is empty spools after the material has been used up. What to do with them? In the video you will learn something from me, but above all I am waiting for creative and useful comments from you!