If gold coins are not a struggle in your Zamonian life, or the walk to the shop vendor is simply too far — fear not. Item Fusion is here!
To fuse, you need 3x pieces of the same identical item. The fusion will salvage these items and reward you with random crafting materials.
Only the items shown in the Fusable Items List can be fused together — no exceptions. You can review the full list directly inside the Item Fusion module in-game, as shown below.

How to use the Item Fusion module (3x identical items required).
The in-game list of items that are eligible for Item Fusion.