Filabot 3D printing filament maker by Tyler McNaney
50$ DIY 3D print Filament Extruder to Mini Shredder ; Filament Makers 2 in 1 machine Part2 - YouTube
SONGHU 3d printer filament extruder machine
PET Filament Maker with The Recreator 3D - MK5Kit : Ender3 - Turn PET1 plastic bottles into 3D filament by JRT3D | Download free STL model | Printables.com