This research aims to analyze the influence of temperature on filament extrusion in a filament maker using polyethylene terephthalate (PET) material, as well as to perform an analysis of the strength of the resulting filament for application in 3D printers. The filament maker is a specially designed tool for this research, with the goal of producing filaments of optimal quality for use in 3D
printers. The research method involves temperature testing during the filament maker extrusion process, where various temperatures are explored to observe their impact on the quality of the resulting filament. Additionally, an analysis of the filament material strength is conducted using tensile testing to evaluate the performance of the produced filament. In the production of 3D printer filaments
from PET bottles (PET-A 77.0 °C, PET-L 77.0 °C, and PET-V 76.0 °C), tensile test specimens were created with densities of 25%, 50%, 75%, and 100%. Contrasting results were obtained for the tensile tests on PET-A bottles: 25% (14.81 MPa), 50% (16.36 MPa), 75% (23.23 MPa), and 100% (33.51 MPa), with the PET-A bottles yielding better results. This research contributes to the understanding of the
optimal temperature parameters in the filament extrusion process using a filament maker, as well as providing insights into the strength of the resulting PET filament
material. This is crucial in the development of 3D printing technology, where the selection and processing of appropriate materials are key factors in producing
high-quality prints.

Keywords: Filament maker, 3D printer, extrusion temperature, material strength
analysis.