Hi Paul, and welcome to the forums! If you look to the top right corner of your screen, you'll notice a search bar. Search Blueprints or recipes, and you'll be able to find the previous threads about blueprints.
here is the thread you are looking for. http://forums.kanoapps.com/showthread.php?5741-VC-PC-ZS-MW-LCN-Hidden-Recipes-and-Blueprints