Setiawan A, Puspitasari P, Tauviqirrahman M, Pramono DD, Salam H. Performance analysis of soybean oil with CuO/Graphene hybrid additive nanoparticles as cutting fluid on CNC machining processes. Teknomekanik. 2025;8(2):136-163. doi:10.24036/teknomekanik.v8i2.42472