Subagiyo, Subagiyo, Sarjiyana Sarjiyana, Samsul Hadi, Suyanta Suyanta, and Asrori Asrori. 2023. “Analysis of Roller Tip Radius and Blank Thickness on The Aluminium Bowl Forming by Metal Spinning Method”. RA Journal Of Applied Research 9 (4):194-99. https://doi.org/10.47191/rajar/v9i4.07.