PET Bottle 3D Printing Filament Making Machine
The PET Bottle Filament Making Machine is a compact system that transforms discarded plastic bottles into high-quality 3D printing filament. It cuts bottles into strips, melts and extrudes them, and carefully spools the filament with precise control over temperature and diameter. Developed as a client project for a STEM institution, it demonstrates sustainable engineering, and we’re working on making the design files available for those interested (contact us).
The PET Bottle Filament Making Machine successfully demonstrates a sustainable and low-cost approach to recycling plastic waste into usable 3D printing filament. By integrating a custom-designed mechanical frame, extrusion mechanism, and a reliable PID-controlled heating system, the project achieves consistent filament extrusion from PET bottles
Overall, the project demonstrates the feasibility of transforming waste PET bottles into valuable 3D printing material through a compact, efficient, and locally manufacturable device. It provides a strong foundation for further development—such as automated feeding, improved cooling, or filament diameter sensing—and serves as a practical educational tool promoting environmental sustainability and engineering innovation.