Wood glue is very strong, with typical strength ranging from about 3,600 to 4,000 psi (pounds per square inch). This means it can withstand pressures between 3,600 and 4,000 pounds per square inch. The bonds formed by wood glues, especially PVA (polyvinyl acetate) wood glues, are usually stronger than the wood itself, so in many cases, the wood fails before the glue joint does. Wood glue works by seeping into the wood fibers and hardening, which creates a strong, durable bond. Proper application, clamping pressure, and curing time are crucial to achieving maximum strength. In fact, wood glue is often stronger than screws or nails because it bonds over the entire surface area of the joint rather than just at points like fasteners. This strength makes wood glue essential in furniture making, cabinetry, and other woodworking projects where a strong, lasting bond is required.