Lay an 8-inch board flat. Draw a line across the board so it is parallel with the 8-inch edge and 1 inch away. Draw another line like this that is 1 inch away from the opposite 8-inch edge. Draw one more line that is perpendicular to the first two and 4 inches away from both 6-inch edges. Repeat this process on the other 8-inch board.
Drill a 3/4-inch hole that is ½-inch deep where the lines intersect. These holes will hold the ends of your two dowels. Erase the remaining pencil markings.
Position the 8-inch boards so they are on their 6-inch edges, 25-inches apart, with their holes aligned and facing each other. Place the dowels inside the holes, screw through the boards and into the dowels.
Set the 24-inch board on top of 6-inch edges of the other two boards. The corners formed should be flush. Screw through the 26-inch board and into the ends of the 8-inch boards.
Set your pots on the 26-inch board, so they rest between the dowels.