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Path of Exile Item Upgrading The ability to upgrade items allows players to improve their weapons and gear with new affixes that boost the base stats of the item or giving additional benefits. To upgrade an item, the player needs to have it in their inventory, as well as access to the kiln. Usually objects with weak bases (like rings) can be upgraded to a stronger base, while items with strong bases such as eth titans do not vary significantly in their stats after being upgraded. Upgrade components U