I totally agree...this tool exchanges sucks! I too wasted precious materials trying this out. I thought we somehow would earn tools and exchange them for better alotment of supplies.
Why on earth cant you just lower the dang number of materials for each building? Seems that would have just made the whole storage issue so much dam easier. NO....you complicated the heck out of it by doing this. I dont even want to build buildings anymore just because of the stupid tool exchange