Finding rare crafting components early in your adventure is essential for optimizing companion quests and upgrading gear. In Baldur's Gate 3, securing Infernal Iron during Act 1 allows players to assist Karlach with her burning infernal engine and forge valuable items. Tracking down all four pieces available in the opening chapter ensures you do not miss vital progression opportunities before moving forward.
Searching the Blighted Village Cellar
The first accessible piece of metal rests inside the blacksmith's workshop basement located in the Blighted Village. Players can access the cellar by destroying the calcified cobwebs in the main house or by lockpicking the exterior doors. Once inside, climb the ladder to reach a high platform chest containing the item while avoiding the boobytrapped floor chest below.
Infiltrating the Shattered Sanctum
Deep within the Goblin Camp, a second piece awaits inside the Shattered Sanctum's locked vault. Head to the area behind the goblin leader Dror Ragzlin's throne and locate the secure iron gate. You can pick the high-difficulty lock or steal the key directly from Ragzlin to claim the treasure inside.
Breaching the Zhentarim Hideout
Another piece lies hidden in the Zhentarim Hideout situated beneath Waukeen's Rest. After navigating past the guards and entering the back chambers of the cavern, search for a locked iron door. Inside the guarded room, lockpick the trapped chest to retrieve the metal without alerting surrounding smugglers.
Bartering at the Grymforge
The final Act 1 location takes players into the Underdark to explore the ancient ruins of Grymforge. Here, you will encounter Stonemason Kith examining the nearby architectural structures. By completing history and perception dialogue checks, or simply buying it from his shop inventory, you can obtain a unique piece known as Infernal Alloy.