Smelting
From Talus Wiki
To Smelt, one must locate a forge. Ore nuggets can be smelted into ingots by placing them in the forge. If successful, an ingot will be placed in the player’s inventory. If unsuccessful, the nugget will be destroyed. The more difficult metals require more nuggets per ingot.
Dexterity (75%) and Strength (25%) are key abilities for Smelting.
Note: The forge can be use to make bronze ingots too. Bronze ingots are made by combining copper ingots and tin ingots.