To complete the companion questline for Karlach in Baldur's Gate 3, it is necessary to visit Dammon the Infernal Mechanic on multiple occasions and utilize Infernal Iron to fulfill the mission's requirements. This quest, titled The Hellion’s Heart, involves Dammon assigning you the task of repairing Karlach’s Infernal Engine by assisting him in gathering Infernal Iron.
As you navigate the Forgotten Realms and gather the necessary resources, it is noteworthy that Dammon alters his location with each Act. Throughout Acts 1, 2, and 3, he can be found in various places. Consequently, you can experience some difficulty in finding him as you advance through the narrative.
This guide will go over all the locations where you can find Dammon the Tiefling Smith to round out Karlach’s questline.
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Finding Dammon in Baldur's Gate 3's Acts 1, 2, and 3

As mentioned, Dammon will relocate to a different location with every Act in Baldur's Gate 3. Listed below are the ways through which you can find him during the game's different Acts.
Locating Dammon in Act 1
In Act 1, you can locate Dammon in the X:178 Y:563 coordinates, known as the Hollow. You can find him adjacent to the Emerald Grove.
Make sure you kill the goblin leaders and do not side with Minthara if you are hoping to complete Karlach’s quest. This is because Dammon might die if you choose to raid the Druid camp.
Locating Dammon in Act 2
In Act 2, you can find Dammon in the X:-33 Y:165 coordinates. This is the stable at the Last Light Inn and is one of the more important locations in the Forgotten Realms when it comes to completing the narrative.
You will automatically reach the area if you are traveling through the Shadow-Cursed Lands while making your way toward the Moonrise Towers.
Also read: Where is Last Light Inn in Baldur's Gate 3, and how can you get there?
Locating Dammon in Act 3
During the final Act, you can locate Dammon at the Forge of the Nine, which can be found to the east of the city of Baldur’s Gate and to the west of Selfsong Tavern. This is the final location where you will be able to find him, so make sure to have ample Infernal Iron for The Hellion’s Heart quest.

Keep Dammon alive at all costs in Baldur's Gate 3
Throughout the Acts, there will be moments when Dammon’s life will be in danger. Hence, make sure you make his survival a priority if you are serious about completing Karlach’s companion quest.
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