The current study discusses the surface finish of specimens fabricated with the majorly used 3D printing Fused deposition modeling mechanism. The optimal parameter has been optimized through this research to improve surface roughness. Additionally, this study explores the influence of printing speed, nozzle temperature, and layer thickness. The design of the experiment was created by applying the Taguchi L9 array. This process involved a total of 9 experiments, and experiments were conducted. The results of DOE were analyzed by the ANOVA method. The Taguchi method shows that layer thickness is a crucial factor in affecting the surface quality of the 3D-printed specimen, and nozzle temperature and printing speed are the least significant. PLA has a low melting temperature, which makes it more susceptible to warpage during 3D printing. The information gathered using this technique will be helpful to other researchers conducting related studies and could provide new insights for 3D printing research.