There is only one way to craft an item, but all items can be crafted without a recipe. Thus, it is important to know exactly which materials to use to craft an item because you will lose the ingredients if you do not combine the correct materials to create an item. Most crafted items are only good for selling, but there are some specialty items that can be crafted that will create unique weapons and upgrades. Most specialty recipes can be found in treasure chests in outdoor areas. The specialty items can be crafted at any time as long as you have the required material(s) and artisan level(s). Some artisans will only gain levels at certain points in the game; thus, you may have to wait until later in the game before certain specialty items can be crafted. Additionally, specialty items sometimes require special materials to construct.