Engineered wooden materials are increasingly used in modern construction as sustainable alternatives to concrete and steel. Timber offers optimal mechanical properties, lightweight, and appealing aesthetics. Glue-laminated timber (GLT) and cross-laminated timber (CLT) are frequently employed as structural elements in contemporary timber buildings. Over the years, the manufacturing technology of engineered wood has advanced through experience and scientific research. Additionally, various building codes and certification schemes ensure proper performance and structural safety throughout the service life of these materials. A critical aspect of manufacturing engineered wood elements is ensuring the proper bonding of glued components. Several factors influence adhesive bond strength and delamination resistance, including the intrinsic properties of the wood, glue chemistry, application process, and pressing and curing conditions. Proper wood surface preparation before adhesive application is also essential for superior product quality. This research aimed to investigate the effect of wood machining conditions on surface characteristics and the delamination resistance of glued wood samples. The experiment was conducted using sharp tools with varying feed per tooth. Additionally, the effect of surface brushing after planing was examined to assess the impact of increased roughness on adhesive bond formation.