Ffxiv What Are the Bars Next to Gear A Lalafell character performing Synthesis. Synthesis , commonly known every bit crafting , is a gameplay mechanic in Last Fantasy XIV . It is the function of Disciples of the Hand, and can be used to craft weapons, armor, tools, and many other products. Synthesis is non required for the main scenario, and is therefore optional, but tin can earn players a lot of gil and allow them to craft equipment for their own classes. While it is likewise not necessary, leveling up a Disciple of the Land grade allows the items for Synthesis to be more easily acquired. Contents 1 Process ane.1 Classes 1.two