Chirag Verma, Kundan Kumar, Akshit Babu, Vinay Kumar, Renu Rani. “Surface Roughness of PLA, PETG, and Metal Copper Materials: Impact of Layer Thickness and Infill Design”. International Journal of Research Radicals in Multidisciplinary Fields, ISSN: 2960-043X 3, no. 1 (January 10, 2024): 14–19. Accessed March 15, 2026. https://www.researchradicals.com/index.php/rr/article/view/104.