This is a clipboard approx. 385mm x 250mm x 5mm in size.
Its base is a 3mm sheet of birch ply veneered both sides.
Pic 1 Reverse side is a Louis Cube pattern of Ripple Sycamore, Sapele and American Black Walnut with a Sycamore border.
Pic 3 Front side of Ash
Pic 4 The materials. All re-used...