OSRS Blast Furnace Guide: The Best Smithing XP & Profit

The Blast Furnace isn't just a place to smelt ore; it's the heart of all efficient Smithing training in Old School RuneScape. This specialized furnace in the dwarven city of Keldagrim halves the coal cost for making bars and offers the fastest Smithing XP rates in the game.

Whether you're looking to make a profit, get 99 Smithing as fast as possible, or efficiently process your ores as an Ironman, this guide will show you how to master the furnace.

Getting Started: Requirements

• Quest: Partial completion of The Giant Dwarf to access Keldagrim.
• Skill: While you can use it at any level, 60 Smithing is highly recommended. This allows you to use the official Blast Furnace worlds (e.g., W358), where a dwarven crew runs the machinery for you for a fee of 72k GP per hour.
• Items:
  • Ice Gloves or a Bucket of Water: To cool down the hot bars. Ice Gloves are a massive quality-of-life upgrade.
  • Coal Bag: (Optional but recommended) Allows you to carry 27 extra pieces of coal.
  • Goldsmith Gauntlets: Essential for the fastest XP method.

How it Works: The Gameplay Loop

The process at the Blast Furnace is a simple, fast-paced loop:

1. Start at the Bank: Withdraw your ore (and coal, if needed).
2. Deposit Ore: Run to the conveyor belt and place your ore onto it.
3. Collect Bars: Run to the bar dispenser, cool the bars (with Ice Gloves or water), and collect your finished product.
4. Bank & Repeat: Run back to the bank and start the next run.

The Fastest XP Method: Gold Bars

This is the classic "buyable" method for Smithing and offers unparalleled XP rates.

• Requirements: 40 Smithing and Goldsmith Gauntlets.
• Method:
  1. Equip your Goldsmith Gauntlets.
  2. Fill your inventory with gold ore.
  3. Deposit the ore on the conveyor belt.
  4. Wait for the XP drop, then collect your bars and bank.
• XP Rate: This is the fastest Smithing XP in the game, easily reaching 350k-400k XP per hour. It comes at a significant cost but is the most time-efficient method available.

The Profitable Method: Adamantite & Runite Bars

The main benefit of the Blast Furnace is its 50% coal discount, which makes smelting high-level bars very profitable.

• Method:
  1. Use the Coal Bag to bring both coal and your primary ore (e.g., Adamantite or Runite).
  2. Deposit the ore and coal.
  3. Collect your bars and bank.
• Profit: Smelting Adamantite or Runite bars is a very consistent money-maker, often yielding 500k-1M GP per hour depending on current market prices. The XP is slower than gold bars but you will be making a profit instead of a loss.

Ironman Blast Furnace Strategy: Doubling Your Resources

For Ironmen, the Blast Furnace is not just a training spot; it's a mandatory utility for progressing your account.

• The Coal Advantage: Coal is often the bottleneck for Ironmen. The Blast Furnace's ability to halve the coal requirement is a monumental advantage. It means every piece of coal you mine from Motherlode Mine is twice as valuable, allowing you to create double the number of Steel, Mithril, Adamant, or Rune bars.
• The Main Loop:
  1. Gather ores from Motherlode Mine or other sources.
  2. Use the Blast Furnace to smelt all your bars efficiently.
  3. Take your bars to the Giants' Foundry or an anvil to train Smithing.
• Gold Bars for XP: Ironmen will also use the gold ore they've gathered to make Gold Bars at the furnace for fast XP, especially when they need to reach a specific Smithing level for a quest or diary.

Conclusion

The Blast Furnace is the undisputed king of smelting. It's the hub for players seeking the fastest XP, those looking for a reliable money-maker, and Ironmen who need to make every piece of coal count. Mastering the efficient rhythm of furnace runs is a key skill for any player serious about the Smithing skill.

Don't want to deal with the heat of the furnace? Let our expert smiths handle the smelting.

→ OSRS Smithing Services
→ Learn about the best way to train with your new bars in our Giants' Foundry Guide