Two-dimensional (2D) materials, such as graphene and hexagonal boron nitride (hBN), have garnered significant attention in recent years due to their unique properties and potential for use in a wide range of applications, including electronics, energy storage, and optoelectronics [4] . However, the properties of these materials are often significantly influenced by defects, such as predeflected cracks, which can alter their mechanical behavior. In this research paper, we aim to investigate the impact of pre-deflected cracks on the mechanical properties of 2D materials and 3D printable parts, and to explore the potential for engineering these defects to optimize the performance of these materials in various applications.