The Giant Foundry is one of the best ways to train Smithing in Old School RuneScape. Designed as a mini-game that trades traditional bar-making for large-scale blade forging, the foundry offers a fresh, profitable, and highly efficient method to boost your Smithing level—all while earning valuable rewards.

Whether you're shooting for level 99 or simply want a change of pace from the anvil grind, this strategy guide covers everything you need to dominate the Giant Foundry.

Before diving in, you must complete the Sleeping Giant quest. This beginner-friendly quest introduces the foundry's mechanics and unlocks access to the mini-game.

Once unlocked, you'll be able to turn unwanted metal bars into massive swords using a set of internal mechanics unique to the foundry.

The Giant Foundry is all about efficiency. Instead of smelting ores and forging individual items, you’ll be crafting large blades by combining metal bars into sword molds, then refining them through multiple stations. Each finished blade earns Smithing XP, coins, and Foundry Reputation, which can be used for powerful rewards.

Key Mechanics:

Metal Bars: You’ll use combinations of bronze to rune bars to craft swords. The type of blade you make depends on the bar types and quantities used.

Temperature Control: You'll need to heat and cool your blade at the right time to progress through shaping and polishing stations efficiently.

Quality Meter: Proper timing and execution directly impact the quality of the blade—and your XP reward.

Reputation System: Earn Foundry Reputation to unlock consumables, outfits, and more.

Best Strategy for XP and Profit

1. Efficient Inventory Setup

A typical foundry run uses 14 metal bars per sword, so bring bars in a 1:1 or 2:1 ratio depending on the mold you're using.

Recommended combinations:

Mithril + Steel

Adamant + Mithril

Adamant + Rune (for higher levels and best XP)

Use the mold guide near Kovac to plan your bar combinations for the best blade type and difficulty.

2. Master the Blade Process

There are four primary stations during each blade’s creation:

Pouring: Combine the bars and pour into the mold.

Shaping: Use the trip hammer while keeping the heat in the ideal zone.

Grinding: Cool the blade to avoid damage and grind when it's at the right temperature.

Polishing: Finalize the sword while it's cooled enough for safe polishing.

Success is all about temperature timing and stamina management—stayin the green zones for optimal XP.

Aside from Smithing XP, you’ll earn coins and Foundry Reputation for each blade based on quality. Boost your OSRS adventure with fast and secure OSRS gold from RSgoldfast - trusted by thousands!

Use Reputation to Buy:

Smiths Outfit: Increases Smithing XP when worn.

Ore Packs: Useful for Ironmen.

Moulds: Unlock better blade designs for improved XP per sword.

Double Ammo Mould: Sellable to players and profitable for mains.

Keep an eye on the mould rotation, and use the best moulds available to maximize your earnings per blade.

Even experienced players can waste time or resources if they’re not careful. Avoid these common pitfalls:

Bringing the wrong bars: Some combinations won’t match the available moulds. Always double-check the daily rotation.

Letting heat drop too low or high: This reduces blade quality and XP—watch the temperature bars!

Forgetting the mold: Not bringing a mold slows you down. Always bank with the correct one equipped.

Tools like RuneLite plugins can also help by displaying optimal temperature ranges and reminding you when to cool or reheat.

The Giant Foundry is one of the most effective and engaging ways to train Smithing in OSRS. It turns an otherwise grind-heavy skill into a dynamic and rewarding experience—complete with solid XP, profit, and unlockable gear.

If you’re committed to reaching 99 Smithing or just want to break up the monotony of traditional training, the foundry is your best bet. Bring the right bars, stay on top of the moulds, and master the mini-game flow to forge your way to glory.

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