전문가도 잘못알고있던 목재에대한 상식 - 가구를 더 튼튼하게 만드는 법

Wood's strength varies depending on the direction of the grain. The strength of wood's grain is due to the strength of its main component, cellulose fibers. Furthermore, lignin, which binds cellulose together, is very weak, making it easy to tear along the grain. However, breaking cellulose is very difficult. In fact, wood glue provides a stronger bond than lignin. This bond strength also varies depending on the direction. Until recently, end-to-end bonding, considered the weakest bonding method, has recently been discovered to be the strongest. In fact, plywood and MDF are materials that compensate for wood's inherent weakness, directionality. Plywood is laminated by alternating the grain, so there's no weak direction. MDF is made by grinding down the wood and rebonding it with glue, so there's no specific weak direction. However, because the cellulose, which provides strength, is completely torn, it's not as strong. Right-angle joints, the most common type of woodworking, can be weak if you simply apply glue. Various reinforcing methods can create stronger joints. A prime example is a mortise and tenon joint, but even this can lead to weaker joints if the direction of the wood grain and cellulose is misunderstood. ___________________________________ Music from Free To Use Music Track: November by Limujii    • Upbeat Happy No Copyright Free Energetic B...   ___________________________________