Mithril Bars Blast Furnace OSRS Ultimate Guide

Mithril Bars Blast Furnace OSRS Ultimate Guide

Smelting mithril bars at the Blast Furnace in Old School RuneScape (OSRS) is a fantastic way to level up your Smithing skill while making a tidy profit. This minigame, located in Keldagrim, offers efficiency and high output, making it a go-to for players aiming to churn out mithril bars fast. In this guide, we’ll break down everything you need to know to master mithril bar smelting, from requirements to step-by-step methods, gear, and profit potential. Whether you’re a seasoned player or just starting, this guide will help you optimize your Blast Furnace runs.

The Blast Furnace stands out because it uses only half the coal required by a standard furnace, which is a game-changer for mithril bars that need coal to smelt. This efficiency translates to faster production and lower costs, boosting both your Smithing XP and gold per hour. Plus, the minigame setup allows you to smelt bars in bulk, making it ideal for high-volume production.

Key Benefits of Smelting Mithril Bars

  • Reduced Coal Usage: Only 2 coal per mithril bar instead of 4.
  • High Output: Produce 3,300–3,600 bars per hour with focus.
  • Profit Potential: Mithril bars fetch a solid price on the Grand Exchange.
  • XP Gains: Up to 95,000 Smithing XP per hour.

Requirements and Preparation

Before you head to Keldagrim, you’ll need to meet some requirements and gather specific items to make your Blast Furnace runs smooth and efficient. Starting with the basics ensures you’re not wasting time or resources.

Quest and Skill Requirements

To access Keldagrim and the Blast Furnace, you must have started The Giant Dwarf quest. Speak to the Dwarven Boatman east of Rellekka to kick things off—it’s a simple step that unlocks the city. For smelting mithril bars, you need at least level 50 Smithing, but level 60 is highly recommended to skip the 2,500-coin fee every 10 minutes. If you’ve got the Ring of Charos (a), you can reduce this fee to 1,250 coins through specific dialogue (1•3•2•3).

Essential Items

Having the right gear maximizes your efficiency. Here’s what you should bring:

  • Coal Bag: Holds 27 coal, doubling your coal-carrying capacity. Get it from Motherlode Mine for 100 golden nuggets.
  • Ice Gloves: Allows instant bar collection without cooling. Dropped by the Ice Queen (level 111) under White Wolf Mountain.
  • Stamina Potions: Keeps your run energy high for constant trips. Expect to use 2–3 doses per hour.
  • Weight-Reducing Gear: Graceful outfit or similar to save run energy.
  • Coins: 72,000 GP per hour for the coffer on official Blast Furnace worlds (worlds 358, 386, or 387).

Pro Tip: If you don’t have ice gloves, you can use a bucket of water to cool bars, but it takes up inventory space and slows you down.

Getting to the Blast Furnace

The Blast Furnace is tucked away in Keldagrim, but getting there is straightforward once you’ve visited once. Here are the fastest ways to arrive:

Travel Options

  • Minigame Teleport: Use the Grouping menu to teleport directly outside the Blast Furnace (requires starting The Giant Dwarf).
  • Minecart: Accessible from the Grand Exchange’s west side or Dwarven Mines under Ice Mountain.
  • Fairy Ring (DKS): Teleport to DKS and run west to the cave entrance for The Giant Dwarf. This is slower, so avoid it if possible.

Once you’re in Keldagrim, the Blast Furnace is just a short walk from the bank, making banking and smelting loops quick.

Step-by-Step Guide to Smelting Mithril Bars

Smelting mithril bars at the Blast Furnace follows a specific pattern to minimize bank trips and maximize output. Below is the optimal method, assuming you’re using a coal bag, ice gloves, and stamina potions.

Initial Setup

  1. Head to an official Blast Furnace world (358, 386, or 387).
  2. Deposit 72,000 coins into the coffer to cover the hourly fee (1,200 coins per minute).
  3. Equip ice gloves and keep your coal bag and stamina potions in your inventory.

Smelting Pattern

Follow this cycle for continuous smelting:

  1. Trip 1: Fill your coal bag with 27 coal at the bank, then withdraw 27 mithril ore. Run to the conveyor belt, deposit the mithril ore, empty your coal bag, and deposit the coal.
  2. Trip 2: Return to the bank, fill your coal bag with 27 coal, and withdraw 27 more coal. Deposit both coal inventories on the conveyor belt.
  3. Collect Bars: Click the bar dispenser to collect your mithril bars (ice gloves auto-cool them). Bank the bars.
  4. Trip 3: Fill your coal bag with 27 coal, withdraw 27 mithril ore, and deposit both on the conveyor belt.
  5. Repeat from Trip 2, collecting bars after every coal-only trip.

Note: Always deposit coal after mithril ore to ensure you’re smelting mithril bars, not iron. The furnace needs 2 coal per mithril bar, so this pattern keeps the coal supply steady.

Tips for Efficiency

  • Stay Focused: Timing your trips prevents delays in bar production.
  • Monitor Run Energy: Sip a stamina potion when energy dips below 20%.
  • Avoid Overloading: The furnace holds only 200 ore at a time, so don’t spam deposits.

Profit and XP Breakdown

Smelting mithril bars is both a money-maker and an XP grind. Here’s a detailed look at what you can expect, based on moderate attention and optimal gear.

XP Rates

Each mithril bar grants 30 Smithing XP. With 3,300–3,600 bars per hour, you’re looking at:

  • XP Per Hour: 99,000–108,000.
  • Time to Level: From level 50 to 70 Smithing, expect around 25–30 hours.

Profit Potential

Profit depends on Grand Exchange prices, which fluctuate. As of recent trends, mithril bars sell for around 989 GP each, with mithril ore at 150 GP and coal at 130 GP. Here’s a rough estimate:

Item Quantity/Hour Cost (GP) Total Cost (GP)
Mithril Ore 3,600 150 540,000
Coal 7,200 130 936,000
Coffer Fee 1 hour 72,000 72,000
Stamina Potions 3 doses 2,500 7,500
Total Cost – – 1,555,500
Revenue (3,600 bars) 3,600 989 3,560,400
Profit – – 2,004,900

Profit Per Hour: Approximately 1.75M–2M GP, depending on prices and efficiency.

Factors Affecting Profit

  • Market Prices: Check the Grand Exchange before starting to ensure profitability.
  • Attention Level: Higher focus yields more bars (closer to 3,600/hour).
  • Coal Bag: Without it, output drops to around 1,800 bars/hour, halving profit.

Pro Tip: Buy ore from Ordan’s shop in Keldagrim if it’s cheaper than GE prices, but stock is limited, so don’t rely on it.

Mastering mithril bar smelting at the Blast Furnace is a rewarding grind that balances XP and profit. With the right setup—coal bag, ice gloves, and stamina potions—you’ll be churning out bars like a pro. Stick to the pattern, keep an eye on GE prices, and enjoy the gains. Happy smelting!