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 craft an ...

Additionally, with a few experimental exceptions, all of the polymer filament on one spool is usually all one color. This means that if someone wants to 3D-print a single object that is different ...