Outside of Factorio, blueprints are saved as character strings. You can share your blueprints with other players and use their blueprints to improve your own factory. One of the most important features of Factorio’s blueprints is that they're not restricted to your game. Certain assembly setups, like electronic circuits, which you need a lot of, or inserters, which you need many of and form a key part of other assembly lines, such as science packs and other types of inserters.Power generators (such as steam engine setups and solar farms).Your drilling and smelting setups for iron, steel, and copper etc.Good areas for early blueprinting include: With any assembly lines or structure layouts that you’re going to either add to or use multiple incidents of, it’s a good idea to blueprint early so you can keep your construction consistent. Early on, though, you’ll have to do the grunt work yourself. Later in the game you can direct drones to automatically build structures designated by blueprints. Note: The blueprint provides an outline of what to build and where, it doesn’t do the actual construction for you. To deploy a Factorio blueprint, simply click on it in your inventory, then left-click to place it as you would any other object. (Image credit: Wube Software) How to use Factorio blueprints