Effect of Nozzle Temperature on the Accuracy of 3D Printer Prints Using Recycled RPET Filament

Abstract

Additive Manufacturing (AM) is one of the advancements in manufacturing technology that has been widely applied across
various sectors, including education, construction, and healthcare. This study aims to analyze the effect of nozzle temperature
variations on the dimensional accuracy of 3D printed objects using recycled filament made from Recycled Polyethylene
Terephthalate (RPET). The test specimen used in this study is a rectangular block with a design dimension of 20 mm × 10 mm
× 5 mm, printed using a concentric infill pattern, with a bed temperature of 85°C and a printing speed of 50 mm/s. The nozzle
temperatures varied between 255°C and 260°C. Dimensional accuracy was evaluated by comparing the measured dimensions
along the X, Y, and Z axes with the original design specifications. The results show that a nozzle temperature of 260°C produced
printed objects with higher dimensional accuracy and closer conformity to the design specifications compared to the results
obtained at 255°C.