“The Effectiveness Using Drill Bit Sharpening Jig during Practical Practices in Politeknik Muadzam Shah ” (2022) MALAYSIAN JOURNAL OF INNOVATION IN ENGINEERING AND APPLIED SOCIAL SCIENCES (MYJIEAS), 2(01), pp. 1–7. Available at: https://myjieas.psa.edu.my/myjieas/article/view/22 (Accessed: 4 March 2026).