Blast Furnace Pumping OSRS Guide for Strength Training

Blast Furnace pumping in Old School RuneScape (OSRS) is a popular method for training Strength without gaining Hitpoints experience, making it a go-to for pures and specialized accounts. This guide dives into everything you need to know about pumping at the Blast Furnace, from requirements to strategies, rewards, and tips for maximizing efficiency. Whether you’re aiming for 99 Strength or just want an AFK training method, we’ve got you covered.

Blast Furnace is a members-only minigame located in Keldagrim, primarily designed for smelting bars with reduced coal costs. However, one of its mechanics—pumping—has become a niche way to train Strength. By operating the pump, players earn consistent Strength XP without combat, making it ideal for accounts that want to avoid Hitpoints XP.

How Pumping Works

The pump, operated by a dwarf named Pumpy on official Blast Furnace worlds, moves hot air from the stove to the melting pot. When you manually operate it, you gain 2 Strength XP per game tick (0.6 seconds), equating to roughly 12,000 XP per hour. The catch? The furnace must be fueled with coke, and you need to stay active to keep earning XP.

Why Choose Pumping?

Pumping is attractive for its low requirements and AFK potential. Here’s why players love it:

• Low Skill Requirements: Only 30 Strength is needed, which can be boosted.
• No Hitpoints XP: Perfect for pures maintaining low HP.
• AFK-Friendly: You can pump for up to 5 minutes (or 25 with third-party clients) before needing to re-click.
• Minimal Costs: No gear or consumables required beyond access fees.

Requirements for Blast Furnace Pumping

Before you can start pumping, you’ll need to meet a few requirements and prepare your account. While the barrier to entry is low, accessing Keldagrim and the Blast Furnace takes some setup.

Quest and Skill Requirements

To access the Blast Furnace, you must:

• Start The Giant Dwarf Quest: Speak to the Dwarven Boatman east of Rellekka to unlock Keldagrim. No skill requirements or quest completion needed—just start it.
• 30 Strength: This can be boosted using items like strength potions.

Optional Preparations

While not mandatory, these can make your experience smoother:

• Client of Kourend Quest: Grants XP to reach 9 Strength quickly for low-HP accounts.
• 48 Fishing: For barbarian fishing to grind Strength to 25, allowing a boost to 30.
• 30 Agility, Crafting, Firemaking: Useful if you plan to operate other Blast Furnace mechanics manually.

Accessing Keldagrim

Once you’ve started The Giant Dwarf, you can reach Keldagrim via:

• Mine Cart: From the Dwarven Mines under Ice Mountain or the Grand Exchange.
• Grouping Teleport: Teleports directly outside the Blast Furnace building.
• Fairy Ring (DKR or DKS): DKR is near the Grand Exchange; DKS requires a short walk to the Keldagrim entrance.

How to Start Pumping at Blast Furnace

Ready to pump? Here’s a step-by-step guide to get you started and keep you earning XP efficiently.

Step-by-Step Pumping Guide

1. Travel to Keldagrim: Use one of the teleport methods above to reach the Blast Furnace building in East Keldagrim (look for the furnace icon).
2. Join an Official World: Worlds like 352, 355, 358, 386, or 387 have dwarves (including Pumpy) operating the furnace for a fee of 72,000 coins per hour, deposited in the coffer near the bank chest.
3. Ensure Coke Supply: The furnace must have coke to grant XP. On busy worlds, other players usually handle this, but check the coke storage if XP stops.
4. Operate the Pump: Click the pump to start. You’ll gain 2 Strength XP per tick as long as the furnace is fueled.
5. Stay Active: The pump runs for up to 100 minutes, but you’ll log out after 5 minutes (or 25 with third-party clients) unless you re-click periodically.

World Selection Tips

Choosing the right world is crucial:

• Official Worlds (352, 355, 358, 386, 387): Dwarves handle all mechanics, so you only focus on pumping. World 302 is often used unofficially for pumping.
• Clan Chats: Join chats like “KempQ CC” to find active pumping worlds, as unofficial worlds can vary.
• Avoid Empty Worlds: Without coke, you won’t gain XP, so stick to populated worlds.

Maximizing Efficiency and XP Rates

While pumping is inherently slow at 12,000 XP per hour, you can optimize your setup to make the grind more bearable and slightly more efficient.

Gear and Inventory Setup

No specific gear is required, but consider:

• Weight-Reducing Clothing: Graceful or boots of lightness reduce run energy drain if you’re moving between areas.
• Minimal Inventory: You only need coins for the coffer (72,000/hour on official worlds). Keep your inventory empty to avoid weight.

AFK Strategies

Pumping is one of the most AFK Strength training methods in OSRS. To extend sessions:

• Third-Party Clients: Approved clients like RuneLite can extend your idle timer to 25 minutes, reducing clicks.
• Idle Notifications: Set up RuneLite to alert you when you stop pumping, so you can re-click without babysitting.

Avoiding Common Pitfalls

Watch out for these issues:

• Coke Depletion: If XP stops, check if the furnace needs coke. You may need to add some (requires a spade and 30 Firemaking).
• World Hopping: Coins in the coffer don’t deplete if you hop worlds, so you can switch without losing money.
• Overheating Risk: On non-official worlds, pumping when the temperature gauge hits red can deal up to 160 damage based on your Hitpoints level.

World Type	Cost (Coins/Hour)	Dwarves Operating	XP Rate (Strength/Hour)
Official (e.g., 352, 358)	72,000	Yes (Pumpy, others)	12,000
Unofficial (e.g., 302)	0	No (players refuel)	12,000 (if fueled)

Tips for Long-Term Pumping Success

Pumping to high Strength levels (like 99) can take over 1,000 hours due to the low XP rate. Here are tips to stay motivated and efficient.

Managing the Grind

The 12,000 XP/hour rate means 99 Strength requires roughly 1,083 hours from level 30. To make it manageable:

• Break It Up: Pump during downtime, like watching videos or studying, since it’s AFK-friendly.
• Track Progress: Use a skill tracker to celebrate milestones (e.g., 50, 75 Strength).
• Join a Community: Pumping worlds like 302 often have active players chatting, making the grind social.

Alternative Training for Variety

If pumping feels too slow, mix in other methods for low-HP accounts:

• Waterfall Quest: Grants 13,750 Strength XP with no Hitpoints XP.
• Pest Control: From 25 Strength, you can earn XP rewards without combat.
• Barbarian Fishing: Trains Strength passively while fishing, up to 25 Strength.

Staying Safe and Rule-Compliant

Jagex monitors Blast Furnace for botting, especially pumping due to its repetitive nature. To avoid issues:

• Avoid Macros: Using automation tools (e.g., setting FPS to 1 for extended pumping) can lead to bans.
• Play Legit: Manual clicking, even with RuneLite’s idle alerts, is safe and mimics normal play.
• Take Breaks: Long sessions can flag accounts, so log out periodically.

Blast Furnace pumping is a unique, low-effort way to train Strength in OSRS, especially for pures or players who enjoy AFK methods. While the XP rate isn’t high, its simplicity and zero Hitpoints XP make it a staple for certain builds. With the right setup, world choice, and mindset, you can tackle the grind to 99 Strength or beyond. So, head to Keldagrim, join a pumping world, and start building that pure strength today!