Original Desktop Filament Extruder MK2 with 1 Extrusion-Screw (DIY Kit – ARTME 3D
PET Filament Machine by mirabatek | Download free STL model | Printables.com
PET Filament Maker with The Recreator 3D - MK5Kit : Ender3 - Turn PET1 plastic bottles into 3D filament by JRT3D | Download free STL model | Printables.com
DIY Filament Extruder and Open Source - Felfil Project