TheWoWDBSiege of Orgrimmar
Siegecrafter Blackfuse Guide
Siegecrafter Blackfuse in Siege of Orgrimmar, quoted from the Adventure Guide. Database holds the raw abilities and the full loot table.
30-second TL;DR
Adventure Guide says
- The fight against Blackfuse unfolds amidst a weapons manufacturing assembly line.
- Each time the conveyor belts activate, three disassembled weapons of various types roll out, and players may access the assembly line by jumping into nearby pipes, to destroy one of the three.
- Stages named in the Adventure Guide: The Assembly Line, Transport Pipes.
- Tanks: Blackfuse heals any nearby Automated Shredders with his Automatic Repair Beam.
- Healers: When an Electromagnet activates, Magnetic Crush deals sustained raidwide damage.
- Damage dealers: Take turns going onto the Assembly Line to destroy one Disassembled Weapon per wave.
Overview
Adventure Guide says
The fight against Blackfuse unfolds amidst a weapons manufacturing assembly line. Each time the conveyor belts activate, three disassembled weapons of various types roll out, and players may access the assembly line by jumping into nearby pipes, to destroy one of the three. The remaining two will be activated and assault the raid until they slide out of view.
- Take turns going onto the Assembly Line to destroy one Disassembled Weapon per wave.
- Automated Shredders' Reactive Armor makes normal attacks ineffective against them.
- Destroy Crawler Mines before they can reach their targets.
- When an Electromagnet activates, Magnetic Crush deals sustained raidwide damage.
- Automated Shredders deal increasing amounts of raidwide damage with Overload the longer they are alive.
- Blackfuse heals any nearby Automated Shredders with his Automatic Repair Beam.
- As you gain applications of Blackfuse's Electrostatic Charge, you can more effectively damage Automatic Shredders through their Reactive Armor.
Encounter phases
Adventure Guide says
- The Assembly Line Periodically, Siegecrafter Blackfuse will initiate fabrication of a set of weapons on the assembly line in his workshop. Disassembled weapons are brought in via conveyor belts along the northwest side of his room. They then pass through an assembly machine on the northeast wall of his room. Finally, they emerge completed on conveyor belts along the southeast wall of his room, where they attack players. Players can use Transport Pipes to reach the conveyor belt along the northwest side of his room, where they can attack and destroy the disassembled weapons. After players destroy a weapon, the remaining weapons become shielded and cannot be damaged.
- Transport Pipes Transport Pipes line the western edge of Siegecrafter Blackfuse's workshop. Players can jump into these pipes to reach the conveyor belt along the northwest side of the workshop.
Tank mechanics
Adventure Guide says
- Blackfuse heals any nearby Automated Shredders with his Automatic Repair Beam.
- As you gain applications of Blackfuse's Electrostatic Charge, you can more effectively damage Automatic Shredders through their Reactive Armor.
Healer mechanics
Adventure Guide says
- When an Electromagnet activates, Magnetic Crush deals sustained raidwide damage.
- Automated Shredders deal increasing amounts of raidwide damage with Overload the longer they are alive.
DPS mechanics
Adventure Guide says
- Take turns going onto the Assembly Line to destroy one Disassembled Weapon per wave.
- Automated Shredders' Reactive Armor makes normal attacks ineffective against them.
- Destroy Crawler Mines before they can reach their targets.
Boss abilities
| Ability | Adventure Guide | Notes |
|---|---|---|
| Launch Sawblade | Siegecrafter Blackfuse launches a magnetized sawblade at a random player. The sawblade will hover in place until it is removed by an Activated Electromagnet. | |
| Serrated Slash | ||
| Protective Frenzy | ||
| Electrostatic Charge | This effect stacks up to 10 times. | |
| Automatic Repair Beam | ||
| Overcharge | When activated weapons arrive on the assembly line, Siegecrafter Blackfuse will Overcharge one of them, increasing its power and effectiveness. | |
| Energized Defensive Matrix | ||
| Reactive Armor | Automated Shredders can also be damaged by Serrated Slash, Shockwave Missile, Detonate! and Superheated. | |
| Death from Above | ||
| Overload | ||
| Pattern Recognition | After using the transport pipes to reach the conveyor belt, the assembly line recognizes a player's biological signature and will reject further attempts to use them for 1 min. | |
| Matter Purification Beam | ||
| Shockwave Missile | The Shockwave Missile turret launches a drill-tipped Shockwave Missile into the ground, sending a barrage of drills that ripple out from the impact location and create rings of seismic energy. | |
| Overcharged Missile Turret | When Overcharged, the Shockwave Missile Turret will fire Shockwave Missiles which persist and continuously barrage the platform with drills and seismic energy until destroyed by players. | |
| Superheated | This effect stacks every second that a player or Automated Shredder remains on Superheated ground, and can stack up to 20 times. | |
| Overcharged Laser Turret | When Overcharged, Siegecrafter Blackfuse's laser turrets will fire a split beam, creating three concentric arcs of Superheated ground. | |
| Magnetic Crush | The force of the electromagnet will also pull all sawblades on the platform towards it and off the platform, causing them to damage any players or Automated Shredders in the path of the blades. | |
| Overcharged Electromagnet | When Overcharged, the Electromagnet will periodically reverse polarities, pushing both players and sawblades in and out from the magnet. | |
| Detonate! | ||
| Break-in Period | Crawler mines are vulnerable to roots, snares and stuns for 1 min after joining the battle. | |
| Ready to Go! | After their Break-in Period expires, Crawler Mines lose their vulnerability to stuns, roots and snares, and their speed increases. | |
| Overcharged Crawler Mines | When Overcharged, Crawler Mines activate a construction matrix within their machinery. This construction matrix enables them to create two new Crawler Mines when they are destroyed. |
Loot
Every name is a TheWoWDB item page. Hover the row for the first-party tooltip.
Asgorathian Blood Seal
Blackfuse's Blasting Cord
Bomber's Blackened Wristwatch
Bracers of Infinite Pipes
Calixian Bladebreakers
Dysmorphic Samophlange of Discontinuity
Fusespark Gloves
Lever of the Megantholithic Apparatus
Powder-Stained Totemic Treads
Shoulders of the Cursed ConquerorShoulders of the Cursed ConquerorShoulders of the Cursed ConquerorShoulders of the Cursed ProtectorShoulders of the Cursed ProtectorShoulders of the Cursed ProtectorShoulders of the Cursed VanquisherShoulders of the Cursed VanquisherShoulders of the Cursed Vanquisher
Siegecrafter's Forge Hammer
Ticking Ebon Detonator
Blackfuse BomblingMounts, toys, achievements, transmog
Only rows the journal loot table or an achievement title can prove for this encounter.
Mounts
Achievements
Heroic: Siege of Orgrimmar · Mythic: General Nazgrim · Mythic: Immerseus · Mythic: Iron Juggernaut · Mythic: Kor'kron Dark Shaman · Mythic: Malkorok · Mythic: Norushen · Mythic: Paragons of the Klaxxi · Mythic: Sha of Pride · Mythic: Siegecrafter Blackfuse · Mythic: Thok the Bloodthirsty · Siege of Orgrimmar
Entrance and instance
Siege of Orgrimmar is a raid in the Adventure Guide. See the Siege of Orgrimmar database page for the raw journal, map, and loot grid. This guide does not invent coordinates or a walking path.
Related bosses
Player strategy
This page quotes the Adventure Guide. It does not add player strategy such as positioning, assignments, stack or spread calls, or cooldown timings unless that sentence is already in the journal.
Questions
What does the Adventure Guide say about Siegecrafter Blackfuse?
The fight against Blackfuse unfolds amidst a weapons manufacturing assembly line.
What does Siegecrafter Blackfuse drop?
The Adventure Guide lists 21 drops. Each name links to its TheWoWDB item page. The full table also lives on the Siege of Orgrimmar database page.
Does Siegecrafter Blackfuse change on Heroic or Mythic?
The current Adventure Guide text for this encounter does not include separate Heroic or Mythic sentences we can quote. If a later client build adds them, they appear here automatically.
Does Siegecrafter Blackfuse drop a mount?
The journal loot table includes Kor'kron Juggernaut. Each links to its TheWoWDB mount page.
Where does this guide's text come from?
Quoted Adventure Guide sections come from TheWoWDB's retail datamine (client build 12.1.0.69587, ingested 2026-09-01). Player strategy such as positioning, assignments, and cooldown timings is omitted unless that sentence is already in the journal.
Source and build
This page quotes the Adventure Guide. It does not add player strategy such as positioning, assignments, stack or spread calls, or cooldown timings unless that sentence is already in the journal. Quoted sections come from TheWoWDB Adventure Guide datamine (client build 12.1.0.69587, ingested 2026-09-01). Ability names link to first-party spell pages. When a newer retail build is ingested, this page updates with it.