If you have a 3D printer, chances are ... Did we mention it also cleans and lubricates your filament as it is fed? You could also make a spool holder using skateboard bearings, but then you ...

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 ...