<![CDATA[This research focuses on the design and construction of a 3D printing filament extruder machine using recycled PET plastic bottles as the primary material. The aim is to provide a cost-effective and environmentally friendly solution for producing 3D printing filament. The methodology involves collecting references, designing the machine, and manufacturing the components. The machine utilizes a cartridge heater for melting the PET plastic, a stepper motor for material pulling, and an automatic winding system. The design incorporates a filament guiding system with a limit switch for consistent winding. Calculations were performed to determine the required motor power (1.75 watts) and heater power (58 watts). The results demonstrate the successful conversion of PET plastic waste into standard 1.75 mm diameter filament. The designed extruder machine offers an economical and sustainable alternative for PET plastic waste utilization. Further research should focus on filament quality testing, temperature stability improvement, and production rate optimization]]>
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