Sitorus, Fransnazoan, Dejoi Irfian Situngkir, A Hafizh Saifullah, and Nuzuli Fitriadi. 2024. “Effect of Cutting Speed on Surface Roughness AS-Scrapper ST37 Using Coated Carbide Tool”. Jurnal Inotera 9 (1). Indonesia, Jakarta, 145-51. https://doi.org/10.31572/inotera.Vol9.Iss1.2024.ID321.