The rapid evolution of 3D printing technologies has catalyzed the exploration of new materials designed to enhance the mechanical performance and reliability of printed structures. Among these materials, fiber-reinforced composite filaments offer significant advantages due to their enhanced mechanical properties and light weight. This project aims to investigate the quasi-static behavior of fiber composite filaments, particularly focusing on their performance under various load conditions. The primary objective is to characterize the mechanical properties of these composite materials when subjected to slow rates of loading, providing crucial insights into their applicability in 3D printing applications. To achieve this, an experimental study involving tensile, compression, and bending tests will be conducted on different types of fiber composite filaments, including those reinforced with glass and carbon fibers. Additionally, this study will explore the impact of environmental factors such as temperature and humidity on the mechanical performance of these filaments, which is critical for their application in diverse climatic conditions. The findings of this research could significantly contribute to the development of more robust and efficient materials for 3D printing, potentially leading to broader industrial applications. The results of this study are expected to provide valuable guidelines for the design and selection of fiber composite filaments for 3D printing, ensuring optimal performance and durability of the printed objects. Through this comprehensive analysis, this project will enhance the understanding of the quasi-static behavior of composite materials and pave the way for their advanced applications in the realm of additive manufacturing.