Corrugated metal sheets have sharp edges, so it’s best to wear protective gloves when working with it. Using a cordless drill and the galvanised screws, attach the corrugated metal sheets to the box frames. It’s better to use too many screws than not enough when you attach the sheets. Also make sure the corrugated sheeting has an overhang on one side. This is so that when it’s attached to the post, the sheeting has a continuous flow.