In some of his discussions, Sir Bentham mentioned combining multiple layers of veneer using glue to form a solid board. Then, an Englishman named Sir Samuel Bentham introduced several machines for the production of veneers. Veneers were hand-cut until the late 1700s. But the type of plywood with multiple angles also has a higher level of durability. Understandably, this plywood grade is more costly than the plywood with layers whose grains are 90° from each other. It adds a lot to the strength of the boards. Some varieties of plywood have the successive layers arranged at multiple angles. The cross-graining also minimizes the possibility of plywood splitting at the edges when driving nails into it. The sheets are also added in an odd number, which somehow reduces expansion and shrinkage. It is due to the “cross-graining” of the multiple layers. The resultant plywood boards created by bonding the various layers together becomes extremely strong. It deals with the advantages and disadvantages of plywood, MDF, oriented strand board (OSB) and particle board. You can learn more about manufactured woods in another of our posts. Plywood comes from the class of wood belonging to medium-density fiberboard (MDF) and chipboard. We arrange the veneer sheets so that the grain is at 90° to successive layers. Plywood is an “engineered” wood that comes from thin layers of wood veneer combined to form sheets of various thicknesses.
0 kommentar(er)
