Fix Adamantine Forge Bugs in BG3

The Adamantine Forge in Baldur’s Gate 3 offers powerful gear upgrades using rare Mithral Ore, but persistent bugs can halt progress, such as endless lava flows or inability to craft a second item. These issues stem from interactions with the Grym boss, valves, and levers in the Grymforge area. This guide details multiple fixes drawn from player reports and community testing, ensuring you can forge items like Adamantine Splint Armour or Shields without frustration.

Understanding Adamantine Forge Mechanics

Located deep in the Grymforge, the Forge requires Mithral Ore (only two available) and specific molds to craft six unique items. The process involves inserting ore and mold, flooding with lava, and slamming a hammer via levers. After the first craft, defeating the Grym boss triggers loot collection, but bugs often prevent repeating for the second item. Common symptoms include lava not draining, unclickable interfaces, or platforms refusing to rise.

• Mithral Ore scarcity: Only two ores exist, limiting crafts to two items.
• Mold variety: Six molds for weapons, armor, or shields scattered around Grymforge.
• Grym fight: Boss activates post-first craft; vulnerable only when superheated in lava.

Primary Fix: Safe Crafting Sequence After Grym

The most reliable workaround avoids the forge lever post-Grym defeat, preventing the bug entirely. Load a save right after crafting your first item and boss loot.

1. Defeat Grym without touching the main forge lever.
2. Pull the mold ejection lever to remove the used mold.
3. Insert new mold and second Mithral Ore.
4. Activate lava valve to fill platform.
5. Pull forge lever to craft.
6. Use elevator to exit safely.

This sequence bypasses the stuck state reported across patches.

Turn-Based Mode for Lava Drain

When lava overflows endlessly after Grym, blocking item retrieval, switch to turn-based mode. This simulates environmental progression, draining lava over turns.

Players confirm 3 turns often suffice, but persist up to 5 if needed.

Handling Stuck Valves and Platforms

If the lava valve jams or platform won’t descend/ascend:

• Valve fix: Interact multiple times or in turn-based mode.
• Platform glitch: Teleport via waypoint if elevator button fails; return later.
• Unclickable slots: Ensure using Mithral Ore, not slag; reload if persistent.

For Grym not taking damage, confirm red superheat glow before lever pull.

Prevention Strategies for Future Runs

Avoid bugs by crafting both items consecutively without leaving Grymforge. Stock molds and ore beforehand.

• Collect all six molds prior (e.g., from Duergar corpses, hidden chests).
• Fight Grym immediately after first craft.
• Skip forge lever until lava stabilizes.
• Save before each lever interaction (quicksave often).

Post-patch, these persist since release, so manual fixes remain essential.

Best Adamantine Items to Forge

With limited ores, prioritize:

Choose based on party needs; armor for tanks, weapons for DPS.

Common Myths and Missteps

• Myth: Turning valve stops lava instantly. Reality: Requires turn-based simulation.
• Misstep: Using forge lever pre-Grym loot. Avoid: Eject mold first.
• Myth: Patch fully resolves. Status: Ongoing since launch.

Advanced Troubleshooting

If basic fixes fail:

1. Verify no party deaths on hammer (triggers separate bug).
2. Dupe ore via glitches if on PC (console-limited).
3. Report to Larian forums with save file for dev review.

Mod users: Disable forge-related mods; vanilla resolves most.

FAQ

Community Tips and Updates

Players on Steam and forums report success with turn-based lava fix even post-Hotfix 12. Reload pre-interaction saves as primary defense. Watch YouTube demos for visual aid (e.g., mold ejection emphasis). Larian acknowledges but no full patch yet; monitor official patch notes.