Akhmadi, Amin Nur, Mukhamad Khumaidi Usman, and Firman Lukman Sanjaya. “A Effect of Rotation Speed and Feed on the Surface of ST 41 Steel on a Lathe Machine”. IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) 3, no. 3 (December 30, 2024): 31–41. Accessed July 7, 2025. https://e-journals.irapublishing.com/index.php/IRAJTMA/article/view/157.