OSRS Blast Furnace Location Guide
The Blast Furnace in Old School RuneScape (OSRS) is a members-only minigame located in Keldagrim, offering players a highly efficient way to smelt bars using half the coal required by regular furnaces. Whether you’re aiming to level up your Smithing skill or make a profit, this guide will walk you through the Blast Furnace location, how to access it, and tips to maximize your experience. Let’s dive into everything you need to know to find and use this iconic furnace.
The Blast Furnace is a Smithing minigame where players smelt ores into bars in bulk, making it one of the fastest ways to gain Smithing experience and craft high-tier bars like mithril, adamantite, and runite. Its key advantage is requiring only 50% of the usual coal compared to standard furnaces, which is a game-changer for resource-heavy smelting. Located in the dwarven city of Keldagrim, it’s accessible to members who meet specific requirements.
Why Use the Blast Furnace?
- High XP Rates: Smelting gold bars with goldsmith gauntlets can yield up to 400,000 Smithing XP per hour.
- Profit Potential: Smelting bars like adamantite or runite can net over 1 million GP per hour, depending on Grand Exchange prices.
- Efficiency: The furnace’s coal-saving mechanic reduces resource costs, especially for high-tier bars.
Where Is the Blast Furnace Located?
The Blast Furnace is situated in East Keldagrim, a bustling dwarven city. To access it, you must first unlock Keldagrim by starting The Giant Dwarf quest. The furnace is housed in a large building marked by a furnace icon on the minimap, accessible by going downstairs in the structure.
Exact Location in Keldagrim
Once in Keldagrim, head to the south-eastern part of the city, slightly north of the train and cart stations. The Blast Furnace building is easily recognizable with its massive pipes and smoky exterior. Enter the building and go downstairs to reach the furnace area, where you’ll find the conveyor belt, bar dispenser, and bank chest.
Blast Furnace Worlds
For the best experience, use one of the 15 designated Blast Furnace worlds, where dwarves (Dumpy, Stumpy, Pumpy, Numpty, and Thumpy) operate the furnace mechanics for you, allowing solo play. These worlds are:
- World 352 (Germany)
- World 355, 356 (United States West)
- World 358 (United Kingdom)
- World 386 (United States East)
- World 387, 424 (Australia)
- World 395, 466 (Germany)
- World 494, 495, 496 (United States East)
- World 515, 516 (United Kingdom)
Note: These worlds require a 72,000 GP per hour fee (12 GP per tick) deposited into the coffer near the bank chest.
How to Get to Keldagrim and the Blast Furnace
Reaching Keldagrim is straightforward once you’ve started The Giant Dwarf quest. Here are the fastest and most efficient ways to get to the Blast Furnace.
Starting The Giant Dwarf Quest
To unlock Keldagrim, speak to the Dwarven Boatman in the mines east of Rellekka. This requires no skill levels, just a conversation to begin the quest. From Seers’ Village or Camelot, follow the path to the mines, as shown on in-game maps. Once you’ve visited Keldagrim, you can use faster travel methods for future trips.
Fastest Travel Methods
| Method | Requirements | Details |
|---|---|---|
| Minigame Teleport | Started The Giant Dwarf | Use the Grouping Teleport to land right outside the Blast Furnace building. |
| Mine Cart | Visited Keldagrim once | Travel from the Dwarven Mines (under Ice Mountain) or Grand Exchange to Keldagrim. |
| Fairy Ring (DKR) | 21 Agility | Teleport to DKR, use the underwall tunnel north of the ring, then take the mine cart to Keldagrim. |
| Fairy Ring (DKS) | None | Teleport to DKS and walk southwest to the Keldagrim entrance near Rellekka. |
| Luck of the Dwarves | High cost | Teleport to west Keldagrim, then walk southeast to the furnace. |
The Minigame Teleport is the fastest option, taking you directly to the Blast Furnace. The mine cart from the Grand Exchange is a close second for convenience.
Alternative Routes
If you prefer walking, start from Seers’ Village or Rellekka and head to the mines east of Rellekka. You can also use the trapdoor northwest of the Grand Exchange (after visiting Keldagrim once) or the White Wolf Mountain passage if you’ve completed Fishing Contest. These are slower but viable for early-game players.
Requirements and Recommended Items
While the Blast Furnace is accessible at any Smithing level, certain requirements and items make the process smoother and more profitable.
Access Requirements
- Quest: Start The Giant Dwarf to enter Keldagrim.
- Smithing Level 60: Avoids the 2,500 GP fee every 10 minutes. Below level 60, the fee can be reduced to 1,250 GP with the Ring of Charos (a) by following the foreman’s dialogue (1•3•2•3).
- GP: 72,000 GP per hour for Blast Furnace worlds, plus 2,500 GP every 10 minutes if under level 60 Smithing.
Recommended Items
- Ice Gloves: Instantly cool bars at the dispenser, saving time and inventory space. Obtained from Heroes’ Quest.
- Coal Bag: Holds up to 27 coal, maximizing inventory efficiency. Purchased from Prospector Percy’s Nugget Shop for 100 golden nuggets.
- Goldsmith Gauntlets: Boosts XP by 2.5x when smelting gold bars. Reward from Family Crest.
- Weight-Reducing Gear: Full Graceful or items like Boots of Lightness and Spottier Cape to save run energy.
- Stamina Potions: Maintain run energy for continuous smelting.
- Ring of Charos (a): Halves the 2,500 GP fee for players under 60 Smithing. Obtained from Garden of Tranquility.
Tips for Using the Blast Furnace
To make the most of your time at the Blast Furnace, follow these strategies to optimize XP, profit, and efficiency.
Smelting Process
- Deposit Coal First: Always load coal before primary ores (e.g., iron, mithril) to avoid smelting unwanted bars. A maximum of 254 coal and 28 primary ore can be deposited at once.
- Use the Conveyor Belt: Place ores on the conveyor belt, which feeds them into the furnace. On Blast Furnace worlds, dwarves handle the rest.
- Cool and Collect Bars: Use ice gloves or a bucket of water to cool bars at the dispenser, then collect them. Up to 28 bars can be stored for pickup.
- Bank and Repeat: Use the nearby bank chest to deposit bars and restock ores, minimizing downtime.
Maximizing Efficiency
- Hybrid Smelting: Combine gold ore with mithril, adamantite, or runite to balance XP and profit. Use a coal bag and switch between goldsmith gauntlets and ice gloves. This method yields ~200 trips per hour compared to ~250 for pure gold.
- Pre-Load Coal: Deposit 26-27 coal before starting to reduce wait times for coal transfers.
- Avoid Overheating: If operating the pump manually (on non-Blast Furnace worlds), stop when the temperature gauge hits the red zone to avoid 10-20 damage.
- Buy Ore from Ordan: Purchase ore from Ordan’s Ore Seller shop near the furnace when stock is high (50+), as it’s often cheaper than Grand Exchange prices.
XP and Profit Rates
| Bar Type | Smithing Level | XP per Hour | Profit per Hour (Approx.) |
|---|---|---|---|
| Gold | 40 | 320,000–400,000 | -572,000 GP (loss) |
| Mithril | 50 | 108,000 | 708,585 GP |
| Adamantite | 70 | ~150,000 | 1,259,385 GP |
| Runite | 85 | ~120,000 | 1,429,335 GP |
Note: Profit rates vary based on Grand Exchange prices, so always check current values. Gold bars prioritize XP, while higher-tier bars focus on profit.
With this guide, you’re ready to navigate to the Blast Furnace in Keldagrim and start smelting like a pro. Whether you’re chasing Smithing XP or OSRS gold, the Blast Furnace is a must-visit for any serious player. Grab your coal bag, equip those ice gloves, and head to one of the Blast Furnace worlds to get started!