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 ...

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 ...

Cotherman removes the spool and replaces it with an automobile hub attached to a shaft. A Grade 5 bolt, which serves as a sheer pin, holds it in place. The roller is powered by a hydraulic motor ...