Today we made a set of shelves 8feet by 4feet to hold all the left over sheet materials. It consist of 7 separate shelves starting 600mm off the floor and each shelf separated by 150mm to allow a reasonable number of sheets on each shelf. It is not designed to take all our sheet materials when they are delivered, just a few. Each shelf is constructed using 18mm OSB as the primary structure but with reinforcement cross bars using our 63mm by 38mm timber. We tried to make it as strong as possible as when it is fully populated, there could be many hundreds of kilos loaded on it!