ON THIS WIKI
Force Ingots can be created by combining a Force Gem and two of the same of Iron, Gold, Bronze, Refined Iron or Silver Ingots. This produces two Force Ingots, which are then usable by a wide variety of tools and equipment. Force Ingots are also producible in a Carpenter and are a more efficient way of obtaining them. Force Ingots are convertible into Force Nuggets and back just like any other Ingot.
From Force Gems