In this study, the FFF printing process using acrylonitrile butadiene styrene (ABS) as the filament material was investigated for the optimization of significant factors in the process. The characterization and optimization of process parameters in FFF is of critical importance because the quality of the specimens produced by this method substantially depends on the appropriate setting of various significant factors. * Corresponding author: filament fabrication (FFF) is a 3D printing or additive manufacturing method used for rapid prototyping and manufacturing. Klong-Luang District, 13180 Prathumthani, Thailand Valaya Alongkorn Rajabhat University, 1 Moo 20 Paholyothin Rd.
