Filament-based 3D printers are remarkably wasteful. If you buy a kilogram of filament from your favorite supplier, the odds are that it will come wrapped around a plastic spool weighing about 250 grams. Use the filament, and that spool will be thrown in the trash. Very, very few products have such wasteful packaging as 3D printer filament, with the possible exception of inkjet cartridges or getting a receipt with your purchase at CVS.
For the last few years, [Richard Horne], better known as RichRap, has been working towards a solution to the problem of the wasteful spools for 3D printer …read more http://pje.fyi/QDxB3P