The first structural plywood was made from western woods in 1905. The material evolved over the decades, and by the 1960s advances in adhesives made southern pine plywood a reality. Even today, southern pine plywood accounts for much of the structural plywood sold. OSB, on the other hand, tends to look like a bunch of wood chips glued together and leaves many builders wary. While both materials share the same durability and basic performance standards, their composition differs. As technology advances, OSB is becoming widely used and accepted. But forget the performance specifics, let's talk about how OSB is made. In this video, Jordan Smith travels to an OSB manufacturing plant to see how the material is made—and the process may surprise you. Watch the full video for a special behind-the-scenes look.