In today's rapidly evolving industrial landscape, characterized by intense global marketcompetition, companies must adapt to the latest and most efficient practices to facilitatecontinuous improvement and maintain their competitiveness. Additive Manufacturing (AM) has garnered significant attention in recent years. Among the various methods within AM, Fused Filament Fabrication (FFF) has gained popularity due to its ability to manufactureproducts layer by layer, offering shortened lead times, reduced production costs, and enhancedcompetitiveness for businesses. However, the lack of standards in AM contributes to a rangeof quality issues. To enable companies to manufacture products using FFF for end customers,it is essential to establish systematic methods for design, quality control, and verification. Oneof the significant challenges associated with FFF is the substantial variation in quality duringmanufacturing. Two products manufactured simultaneously can exhibit significantperformance disparities, necessitating testing material parameters to understand deviationsfrom theoretical material properties. This sets the objective of the study: to enhance theunderstanding of material properties in products manufactured using FFF with the Onyxmaterial. The intention is to evaluate the possibility of replacing traditional manufacturingmethods in the development of lifting tools for the manufacturing industry. This led to theformulation of the following research questions: RQ1: "How can a material verification process be designed to evaluate material properties ofdetails manufactured using FFF?" RQ2: "How do theoretical material properties differ from empirical test results for Onyx?" RQ3: "How can a simple mechanical test rig be developed to obtain material properties ofproducts manufactured using FFF?" The study was conducted over a 20-week period and encompassed two sub-studies: atheoretical study and an empirical study. The theoretical study utilized a literature review ofscientific articles and books published within the relevant areas. The empirical study involveda single-case study, further divided into two parts. The first part focused on the productdevelopment process, aiming to develop a simple mechanical test rig to obtain materialproperties for products manufactured using FFF. The second part aimed to develop a materialverification process to evaluate the material properties of each individual product and comparethe empirical results with theoretical material data. The study resulted in a functional mechanical tensile testing machine for evaluating thematerial properties of products manufactured using FFF. Additionally, a proposed materialverification process, tailored to the needs of the case company, is presented. The study alsorevealed significant differences between empirical material properties and theoretical data,highlighting the importance of generating customized material data when manufacturing with FFF. Furthermore, the empirical material data demonstrated a considerable variation in results,emphasizing the need to control both processes and material quality to ensure the final product'squality. Keywords: Additive manufacturing, Fused Filament Fabrication, material verification,material testing, tensile test, product development.