A critical part of composite materials is that they are dimensionally stable. They don’t warp, elongate, or shrink, which is better than true wood. The glue and

A critical part of composite materials is that they are dimensionally stable. They don’t warp, elongate, or shrink, which is better than true wood. The glue and different grain orientations counteract the normal movement. The grain patterns in OSB look a lot like those in parts made of forged carbon, and provide a similar purpose.