Hello everybody. Without getting into a lot of extraneous detail, I'm thinking of making a torsion box frame using 3/4" plywood (turned flat) for the core. It would be skinned by 1/4" plywood or similar material on the outside. I would use pocket screws to join the pieces of the 3/4" core together. So the total thickness would be 1 1/4" (1/4 + 3/4 + 1/4). Would this be much stiffer than the 3/4" plywood by itself?

Thanks.