The Infernal Bracelet is unlocked by researching it after completing the Arcane Bellow research in the Infernal Furnace tree.
Knowing the ability of an Infernal Furnace to smelt items, you went on to study a way of using that power from your hands. This bracelet smelts blocks in the world with a right click on them. In order for it to do so, it needs to be charged by right clicking on an active Arcane Bellows, in order to convey the energy of the furnace,
Made on an Infusion Altar
When right clicked it smelts the item smelts blocks in the world with a right click on them. Can only be used to smelt cobblestone to stone, sand to glass, and other blocks that are smeltable into blocks. It however will not smelt ores, wood, or cactus.