This study explores the direction of fracture propagation by employing the extended finite element method (XFEM) to simulate the tensile tests on 3D-printed single-edge notched tension (SENT) specimens composed of acrylonitrile butadiene styrene. The principal aim of this research is to precisely explore the material’s performance under varying filament alignments, particularly 0°, 90°, and 45°. The orientation of filaments in each layer remains stable, which influences crack development as the uniaxial tensile damage evolves. The study aims to provide accurate observations on how filament orientation affects the initiation and spread of cracks in 3D-printed objects by using specialized XFEM simulations that replicate these unique tensile trials. Demonstrating that breakdowns occur along the filament orientation, or filament alignment, emphasizing the structural properties of regions between filaments that operate as places of weakness.