Kosim, N. et al. 2026. Effect of Principal Cutting Edge Angle of High-Speed Steel Tools On The Machining Stability of Aluminium 6061 During Turning. International Journal of Science and Environment (IJSE). 6, 2 (Jul. 2026), 2475–2483. DOI:https://doi.org/10.51601/ijse.v6i2.769.