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Path of Exile Item Upgrading Players can upgrade their weapons and equipment using new attachments. They can also boost its base stats or add additional benefits. To upgrade an item, the player has to have it in their inventory, as well as access to the kiln. Usually, items with weak bases (like rings) can be upgraded to a stronger base, while items with strong bases like eth titans aren't affected significantly in their stats after being upgraded. Upgrade components Upgrade components can