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The aim of this study is to identify the best combination for a blend comprising bamboo fiber and polyester resin, enhanced by the addition of coconut fiber as a filler. The study primarily focuses on analyzing tensile tests to pinpoint the optimal strength parameters. Furthermore, this investigation seeks to assess the extent to which variations in specific parameters influence the tensile properties of composite materials. These parameters encompass the volume ratio between the matrix and coconut fiber, the alkali concentration percentage, and the length of the coconut fiber. During the composite fabrication phase, the hand lay-up method in conjunction with the Taguchi Method was employed. The L4(23) orthogonal experimental design was selected due to three process parameters, each with two levels. The experiment was replicated five times. The pivotal process parameters under scrutiny encompassed the volume ratio between the matrix and coconut fiber, alkali concentration, and coconut fiber length. The findings of this study reveal that the optimal composition for achieving maximum tensile strength consists of a 60% matrix to 20% coconut fiber volume ratio, a 5% alkali concentration, and a coconut fiber length of 30 mm. This specific composition yielded a tensile test value of 54.34 MPa. Additionally, the most influential parameter contributing to tensile strength was the length of the coconut fiber, contributing 42.560%.