The Wearable Fabricator is a block added by Wearables. It is used for crafting Wearables' components. Right-clicking it will open it. In its GUI, each component is listed to the left. A component can be selected by right-clicking it. This will display the component in the black box, as well as the required items to create that component. The required items can be added the four slots under the black box. Once they are there, the component can be created by left-clicking it from the far right slot.