My table is 63" x 120". Although mine is not a full torsion box, I did more or less as @Jono is suggesting, and used a full sheet of ply along with a couple of smaller cuts, and used the ribs as the joint where possible.
My table is 63" x 120". Although mine is not a full torsion box, I did more or less as @Jono is suggesting, and used a full sheet of ply along with a couple of smaller cuts, and used the ribs as the joint where possible.