FLOATING BOX SHELF
1 On one sheet of plywood, measure and mark a strip 350mm x 1200mm. Use handsaw to cut strip.
From this strip, measure and mark 2 squares, 350mm x 350mm, for the top and bottom pieces. Cut with handsaw. Measure and mark 2 pieces, 150mm x 350mm, for the sides. Cut.
Glue and screw the sides onto the top and bottom pieces to create a box. Sand off edges.