Al Fathurrahman, F. et al. 2026. Limitations of Interlocking Features in Rotary Friction Welding (RFW) of 3D-printed PLA. Jurnal Rekayasa Mesin. 21, 1 (May 2026), 31–38. DOI:https://doi.org/10.32497/jrm.v21i1.7419.