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Engineering Legion Engineering
Reaves Module: Failure Detection Mode
A Engineering recipe learned at Legion Engineering 1 that crafts Reaves Module: Failure Detection Mode from 2 reagents.
Reagents
Crafts
Icon
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| Recipe item |  Schematic: Reaves Module: Failure Detection Mode | Requires Legion Engineering 1 |
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Crafting estimate at current listings
- Reagent cost (lowest listed)
- …
- Crafted item, lowest listed price
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- Auction House cut (5%)
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- Estimated profit at that listed price
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Cost per reagent
| Reagent | Qty | Each | Cost | Share |
|---|---|---|---|---|
 FelslateMetal & Stone · 221,806 on the Auction House | 80 | 1 gold | 80 gold | |
 Surface-to-Infernal Rocket LauncherGun | 2 | … | … |
About Reaves Module: Failure Detection Mode
One craft takes 80 Felslate and 2 Surface-to-Infernal Rocket Launcher. It is taught by Schematic: Reaves Module: Failure Detection Mode, which needs Legion Engineering 1.
- Recipe category
- Robotics (Legion Engineering)
Reaves Module: Failure Detection Mode tooltip
How to learn Reaves Module: Failure Detection Mode
Schematic: Reaves Module: Failure Detection Mode
- Teaches
- Teaches you how to craft a Reaves Module: Failure Detection Mode.
- Requires
- Legion Engineering (1)
- Binding
- Binds when picked up
Reaves Module: Failure Detection Mode: lowest listed price, last 30 days
The current lowest listing is 14% below its 30-day median.
- Now
- 900 gold11 silver
- 30-day low
- 872 gold22 silver Oct 6
- 30-day high
- 1,872 gold36 silver Oct 16
- 30-day median
- 1,042 gold32 silver
- 7-day median
- 1,000 gold32 silver
- Hourly snapshots
- 685
US region, the cheapest listing at each hourly Auction House snapshot. These are asking prices, not sales.
Where the reagents come from
Felslate. No recipe, Blizzard quest reward or dungeon journal drop in our game data produces it. Also a required reagent in 19 other recipes (12 Engineering, 4 Blacksmithing, 2 Alchemy and 1 Jewelcrafting); Reaves Module: Piloted Combat Mode takes the most, 200 per craft.
Surface-to-Infernal Rocket Launcher. No recipe, Blizzard quest reward or dungeon journal drop in our game data produces it. Also a required reagent in 5 other recipes (5 Engineering); the most per craft: Double-Barreled Cranial Cannon (Engineering, 1 per craft), Gunpack (Engineering, 1 per craft), Ironsight Cranial Cannon (Engineering, 1 per craft), Sawed-Off Cranial Cannon (Engineering, 1 per craft) and Semi-Automagic Cranial Cannon (Engineering, 1 per craft).
More Legion Engineering recipes in the same skill range
"The Felic"Relics, learn at 1, grey at 70- Auto-HammerDevices, learn at 1, grey at 60
- Blingtron's Circuit Design TutorialDevices, learn at 1, grey at 100
- Blink-Trigger HeadgunGoggles, learn at 1, grey at 40
- Bolt-Action HeadgunGoggles, learn at 1, grey at 40
- Chain SkullblastersGoggles, learn at 1, grey at 100
- Dalaran Auto-HammerHouse Decor, learn at 1, grey at 100
- Deployable Bullet DispenserCombat Tools, learn at 1, grey at 60
- Double-Barreled Cranial CannonGoggles, learn at 1, grey at 80
- Failed Failure Detection PylonHouse Decor, learn at 1, grey at 100
Reading these numbers
1 of the reagents have no current Auction House listing, so the cost of a craft cannot be totalled today. The reagents that do have prices are shown above; the missing ones are usually items that trade per realm rather than region-wide.
Costs use each reagent’s lowest listed price; the estimate is the crafted item’s lowest listed price, times the items one craft makes, minus those reagents and Blizzard’s 5% sale cut. Listings are asking prices, not sales. Recalculated every snapshot and left blank rather than guessed when a price is missing. How we estimate crafting profit →
Other recipes that use Felslate
Featured in guides
Guides and routes on this site that cover Reaves Module: Failure Detection Mode.
Data notes
- No Auction House price for the crafted item - output value unknown (it may be soulbound/BoE gear or an untracked item).
- 1 reagent(s) have no current Auction House price, so total cost-to-craft is unknown.