How to Get Furnace Class Mod in Borderlands 4

In Borderlands 4, few Class Mods offer the raw elemental power and sustained aggression of the Furnace Class Mod. Designed specifically for Amon the Forgeknight, this legendary mod transforms him into a relentless firestorm, perfect for players who rely on Forgedrone synergy, burn stacking, and high uptime combat. Whether you’re melting mobs or boss rushing, Furnace is a top-tier choice for maximizing damage and drone efficiency.

Borderlands 4: How to Get Furnace

Furnace Class Mod Overview

• Vault Hunter: Amon the Forgeknight
• Type: Legendary Class Mod
• Primary Effects:
  • Forgedrone Kill Skill: Ignites enemies on kill, dealing burn damage over time
  • Passive Buffs: Increases fire damage, drone uptime, and weapon reload speed

This mod turns Amon into a walking inferno, ideal for builds that emphasize elemental damage, drone uptime, and aggressive combat loops. It’s especially effective in high-density zones and boss fights where sustained burn damage can quickly overwhelm enemies.

How to Get the Furnace Class Mod

To obtain the Furnace Mod, you’ll need to defeat Idolator Sol, a theatrical and rhythm-based boss located in Fortress Indomita, deep within The Fadefields.

• Dropped By: Idolator Sol
• Location: Fortress Indomita, The Fadefields
• First Encounter: During the quest “Ashes to Ashes”

Farming Method

Use Moxxi’s Big Encore Machine, located near the entrance of Sol’s boss arena, to reset the fight andfarm repeatedly. This machine allows for quick re-engagements withoutneeding to reload the zone, making it the most efficient way to grindfor the Furnace Mod.

Farming Tips for Maximum Efficiency

Idolator Sol is a multi-phase boss with rhythm-based attack patterns andelemental vulnerabilities. Here’s how to optimize your farming runs:

• Use shock or cryo weapons: Sol is vulnerable to elemental disruption, especially shock and cryo. These can interrupt his attack sequences and speed up the kill.
• Equip loot-enhancing gear: Relics and mods that boost loot drop rates can slightly improve your odds of obtaining the Furnace Mod.
• Play co-op: Farming with a team speeds up the process and allows for efficient loot sharing. Plus, Amon’s drone synergy benefits from coordinated combat.
• Watch Sol’s rhythm-based attacks: His patterns often follow musical cues. Timing your dodges and cooldowns is key to surviving and maintaining pressure.

Why the Furnace Mod Is Worth the Grind

The Furnace Class Mod is built for players who want to dominate with elemental firepower and drone-based aggression. Its unique combination of kill-triggered burn effects and passive buffs makes it one of the most potent mods for Amon’s playstyle.

Key Benefits:

• Burn Damage Over Time: Ideal for crowd control and boss melting
• Extended Drone Uptime: Keeps Forgedrones active longer, increasing sustained damage
• Faster Reload Speed: Maintains combat momentum and reduces downtime

These traits make Furnace perfect for Forgedrone-centric builds, especially those that rely on kill chaining, area denial, and elemental stacking.

Build Strategy: Become the Firestorm

With the Furnace Mod equipped, focus your build on:

• Skills that enhance Forgedrone damage and uptime
• Talents that boost fire damage and elemental effects
• Perks that trigger on kill or burn status

Pair it with incendiary weapons, drone-enhancing relics, and cooldownreduction gear to create a build that thrives in chaos and punishesenemies with relentless burn damage.

The Furnace Class Mod is more than just a rare drop—it’s a game-changing tool for players who want to turn Amon into a fire-spewing juggernaut. Whether you’refarming bosses or clearing waves, this mod delivers unmatched synergyand elemental dominance.

So head to Fortress Indomita, gear up, and start farming. With persistence and the right strategy,the Furnace Mod will be yours—and your enemies will burn for it.

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