This study investigates the direct pellet 3D printing of polybutylene adipate-co-terephthalate (PBAT), a biodegradable polymer, to address the environmental issues associated with conventional plastics. The research aims to eliminate the need for filament conversion, which is common in FDM 3D printing. The optimal nozzle temperature for printing PBAT was determined by analyzing the mechanical properties and microstructure of tensile specimens printed at different temperatures. Dynamic mechanical thermal analysis (DMTA) was conducted to evaluate the thermal behavior of the printed PBAT. Additionally, two structures with different infill percentages (40% and 60%) were designed and printed to assess their compressive strength and energy absorption properties. The results show that increasing the nozzle temperature enhances the mechanical properties of PBAT, with the highest nozzle temperature of 200 °C yielding an elongation of 1379% and a tensile strength of 7.5 MPa. Specimens with a 60% infill density exhibited superior compressive strength (1338 KPa) and energy absorption compared to those with a 40% infill density (1306 KPa). SEM images revealed that higher nozzle temperatures improved the print quality, reducing microholes and layered structures. The study demonstrates the potential of PBAT as a standalone material for 3D printing, highlighting its unique properties and desirable mechanical performance. This approach could simplify the 3D printing process and reduce material waste, contributing to more sustainable and eco-friendly practices.This study investigates the direct pellet 3D printing of polybutylene adipate-co-terephthalate (PBAT), a biodegradable polymer, to address the environmental issues associated with conventional plastics. The research aims to eliminate the need for filament conversion, which is common in FDM 3D printing. The optimal nozzle temperature for printing PBAT was determined by analyzing the mechanical properties and microstructure of tensile specimens printed at different temperatures. Dynamic mechanical thermal analysis (DMTA) was conducted to evaluate the thermal behavior of the printed PBAT. Additionally, two structures with different infill percentages (40% and 60%) were designed and printed to assess their compressive strength and energy absorption properties. The results show that increasing the nozzle temperature enhances the mechanical properties of PBAT, with the highest nozzle temperature of 200 °C yielding an elongation of 1379% and a tensile strength of 7.5 MPa. Specimens with a 60% infill density exhibited superior compressive strength (1338 KPa) and energy absorption compared to those with a 40% infill density (1306 KPa). SEM images revealed that higher nozzle temperatures improved the print quality, reducing microholes and layered structures. The study demonstrates the potential of PBAT as a standalone material for 3D printing, highlighting its unique properties and desirable mechanical performance. This approach could simplify the 3D printing process and reduce material waste, contributing to more sustainable and eco-friendly practices.