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Borderlands 4
Foundry Freaks Drops and Location
☆ How Rush Saved Mercenary Day (Bounty Pack 1)
★ 12 active SHiFT Codes as of December 4, 2025
☆ Black Market Location
★ Elemental Weakness Chart
☆ Legendary Weapons
★ Builds: Vex | Amon | Rafa | Harlowe
Foundry Freaks consists of three bosses (Frank the Furnace, Hank the Welder, and Sal the Engineer) located in The Pitted Stain Ripper Drill Site in Borderlands 4. See the Foundry Freaks' drop rewards, location, and tips on how to beat all three bosses in this guide.
List of Contents
Foundry Freaks Drops
| Foundry Freaks Drop Rewards |
|---|
Foundry Freaks Location
Found in The Pitted Stain Ripper Drill Site
The Foundry Freaks (Frank the Furnace, Hank the Welder, and Sal the Engineer) are located in The Pitted Stain Ripper Drill Site, Idolator's Noose in Fadefields. These bosses can be repeatedly farmed by spending cash at Moxxi's Big Encore Machine near the entrance of the boss arena.
How to Beat the Foundry Freaks
| How to Beat the Foundry Freaks |
|---|
|
|
Use Incendiary and Corrosive Weapons
You'll have to kill a lot of rippers before the three bosses appear. Due to this, bringing an Incendiary weapon is highly recommended as this element is their weakness.
Once the bosses appear, they will have 2 health bars- a yellow and a red bar. To destroy their yellow health bar quickly, use a Corrossive weapon.
Elemental Weakness Chart and Damage Guide
Keep Your Distance
All three bosses use a short ranged flame attack and a series of melee attacks. Try to keep your distance by using different movement mechanics as they chase you around the arena!
Focus on One Boss
While the three of them will spawn at the same time, Frank the Furnace will relatively stay far away from you. Use this advantage to focus on hitting one boss first to make the fight less chaotic!
Don't Kill All Rippers
Spare some Rippers in the area to use them for second wind. This fight is long and can be battle of attrition, so saving a weak enemy to quickly revive can help you survive!
Foundry Freaks Overview
 |
|
| Point of Interest | The Pitted Stain Ripper Drill Site |
|---|---|
| Area | Idolator's Noose |
| Region | Fadefields |
| Weakness | Corrosive, Incendiary |
Borderlands 4 Related Guides
List of Bosses
| Invincible Bosses | ||
|---|---|---|
| Bloomreaper | - | - |
| The Fadefields | ||
| Warden Scathe | Splashzone | Horace |
| The Oppressor | Bio-Bulkhead | Idolator Sol |
| Primordial Guardian Inceptus | Sidney Pointylegs | Sludgemaw |
| Voraxis | Foundry Freaks | Backhive |
| Mimicron | Core Observer | Minister Screw and Donk |
| Carcadia Burn | ||
| Moon-Maddened Callis | Callis, the Ripper Queen | Genone |
| Pango and Bango | Driller Hole | Rocken Roller |
| Skull Orchid | Primordial Guardian Radix | Fractis |
| Leader Willem | Rippa Roadbirds | - |
| Terminus Range | ||
| Saddleback and Immortal Boneface | Shadowpelt | Callous Harbinger of Annihilating Death |
| Bramblesong | Primordial Guardian Origo | Vile Protoype |
| Vile Lictor | Skyspanner Kratch | Divisioner |
| Dominion | ||
| Axemaul | Timekeeper | Primordial Guardian Timekeeper |
| Arjay | Bio-Thresher Omega | Directive-0 |
| Vile Ted | - | - |
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Foundry Freaks Drops and Location
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