Use the sledge hammer to pound the four posts into the ground 3 feet apart, at the corners of the square. Allowing five boards to a side, and starting at the bottom, nail the boards to the posts to make a four-sided container. Leave 2 inches between the boards to allow air into the pile. If you wish to decrease your composting time, build a second holding unit so that the wastes in one can mature while you add wastes to the other. Compost Bin A wire-mesh holding unit is inexpensive and easy to build out of either galvanized wire or hardware cloth.
Posts provide more stability for a wire bin but make the bin difficult to move.
Fold back 3 to 4 inches of wire at each end of the cut piece to provide a strong, clean edge that will not poke or snag, and that will be easy to latch. Stand the wire in a circle and set it in place for the compost pile. Cut the heavy wire into lengths for ties. Attach the ends of the wire together with the wire ties, using pliers. Space wood or metal posts around the inside of the wire circle.