Minecraft wiki entry for Things_not_to_do, associated text: Curse of Binding and Curse of Vanishing are enchantments with negative effects. Unlike other enchantments, which can be removed using a grindstone, you cannot "un-curse" an item. If you obtain a cursed item, either throw them into lava or the Void, or smelt them in a furnace or blast furnace if it is a golden, iron, or a chainmail piece.