Most 3D printers come with a pretty basic filament holder — often little more than a bar to hang the spool on. [Ivan Miranda]’s 3D printers run bigger spools than most, though, so he had to ...

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 ...