Welcome to NGB and our Baldur’s Gate III walkthrough for The Adamantine Forge quest! This guide will cover everything you need to know so you can easily complete the quest.
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How to Begin The Adamantine Forge Quest
You can pick up this quest by traveling to the Sussur Tree and defeating Filro the Forgotten. You’ll then want to loot him and read the Scribble notes he was carrying.
The Adamantine Forge Walkthrough
Learn more about the Adamantine Forge
To learn more about the forge, complete the Defeat the Duergar Intruders quest to access the area behind the vines in the Myconid Colony. You can loot a Pale Corse there that has a book on it. Pass a skill when reading the book to learn it’s titled The Great Furnace of Grymforge.
Find the Adamantine Forge
Head to the Grymforge (you can get there following the Defeat the Duergar Intruders quest line), then follow that path through the north part of the area to meet Herdmaster Skarjall. He’ll tell you to get the beasts to work to help clear the rubble.
If you pass a persuasion check, he’ll inform you that there is adamantium on the other side of the rubble. Interact with the animal to get the notion to hit it.
If you have Animal Handling, you can take that approach (and that is what we did) to calm the beast. You can then tell it to return to work or attack its masters. We recommend having the animals dig out the rock because afterward, the dwarfs will attack you anyway.
If you want to make the fight easier and don’t care about the loot, you can try and push them over the edge. Also, note that if you don’t interact with the animals before attacking the dwarfs, you’ll have to fight them, too.
With those goons taken care of, you’ll now want to work your way around to the southeastern part of the area. There, you’ll find the Ancient Forge Ancient Sigil Circle and, slightly further than that, the Adamantine Forge itself.
Activate the Adamantine Forge
To use the forge, you’ll need a mold and some ore. The ore can be found in two locations: in a sitting area just off the broken steps leading to the forge (beware ambush) and down the path southwest of the Ancient Forge fast travel point on the other side of the lava. The image below has the general locations of the molds (pink) and the ore (blue).
When you have both of those things, go to the forge and place a mold into the Mould Chamber and a piece of Mithral Ore into the Crucible. After that, head over to the Forge Lever and activate it. This will lower the forge.
Defeat the Forge Protector
Once it comes to a stop, have someone use the Lava Lever… to start the boss fight against the automaton Grym, Etneral Protector of the Forge, who also happens to be Level 8. The way Grym works is that he will go after the last person who attacks before his turn.
If you spread out your party, you can effectively kart him around as you see fit, and if you get him in the center of the room and hit the Forge Lever, you’ll deal massive damage to it.
Another thing you’ll need to do is keep the room filled with lava. It will heat Grym so that you can deal damage to him. When his health gets low, a squad of Magma Mephit will spawn on the northwest side of the forge.
Pick up the forged item
Once they and the guardian have been dealt with, you can claim your forged item. Once doing so, the quest will be completed.
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