Blueprints are now working, though still limited in scope. Right now, in my build, I can craft any of the three "kits" - health, repair and air tank.
These air tanks and repair kits were created with the base materials, in this case acknexium crystals. This was just done for testing. As materials the script currently chooses three random items. If you have those items in the required quantities, it will create the kit, and add it to your inventory, while removing the used up materials.
This works, but doesn't make a whole lot of sense just yet. Making an air tank out of an ancient stone tablet seems strange, so I will have to create and assign basic materials that would actually be used in the construction of the objects in question.
The next step will be to make blueprints that build other objects, like armor upgrades, weapons and so forth.
Then I will begin making new items, some of which will only be available with the right blueprint.