Mohammad Rudi Romadhoni; Samsul Hadi. EFFECT VARIATION CUTTING SPEED AND OXYGEN PRESSURE OF FIBER LASER CUTTING MACHINE ON SURFACE ROUGHNESS OF 304 STAINLESS STEEL MATERIAL: PENGARUH VARIASI KECEPATAN PEMOTONGAN DAN TEKANAN OKSIGEN MESIN FIBER LASER CUTTING TERHADAP KEKASARAN PERMUKAAN DARI MATERIAL STAINLESS STEEL 304. J-MEEG 2024, 3, 318-322.