How to Get the Cannonball Mould in OSRS: A Step-by-Step Guide

If you’re an Old School RuneScape (OSRS) player looking to unlock the power of the Dwarf Multicannon, you’ll need a cannonball mould to craft cannonballs. This essential item opens the door to efficient combat training and profitable smithing. In this comprehensive guide, we’ll walk you through everything you need to know about obtaining the cannonball mould (also called the ammo mould), including quest requirements, steps to acquire it, and tips to maximize its use. Whether you’re a newbie or a seasoned adventurer, this blog post is your one-stop resource for mastering the cannonball mould in OSRS.

The cannonball mould is a key item for players who want to use the Dwarf Multicannon, a powerful ranged weapon that fires cannonballs to deal area-of-effect damage. It’s a game-changer for Slayer tasks, bossing, and training Ranged efficiently. Beyond combat, smithing cannonballs with the mould is a popular method to train Smithing while earning a decent profit, making it a dual-purpose tool for both combat and skilling enthusiasts.

What Is the Cannonball Mould?

The cannonball mould is a non-tradeable item used to smith cannonballs from steel bars at a furnace. Each steel bar produces four cannonballs (or eight with the upgraded double ammo mould), granting 25.6 Smithing experience per bar. It’s a must-have for anyone looking to leverage the Dwarf Multicannon’s capabilities.

Benefits of Using the Cannonball Mould

• Combat Efficiency: Fuels the Dwarf Multicannon for fast Slayer and Ranged XP.
• Profit Potential: Smithing cannonballs can yield consistent gold by selling them on the Grand Exchange.
• Skill Training: Offers a low-effort way to level Smithing.

Prerequisites for Getting the Cannonball Mould

Before you can get your hands on the cannonball mould, there are a few requirements to meet. Fortunately, they’re straightforward, making this an accessible goal even for early-game players.

Complete the Dwarf Cannon Quest

The primary way to obtain the cannonball mould is by completing the Dwarf Cannon quest. This quest has no skill or combat requirements, so it’s perfect for new accounts. You’ll need to finish most of the quest to receive the mould, though partial completion unlocks its use for smithing.

Level 35 Smithing

To actually use the cannonball mould, you need at least 35 Smithing. If you’re starting from level 1, consider quests like The Knight’s Sword, which boosts you to 29 Smithing instantly, followed by smelting bars to reach 35.

Optional: Access to Giants’ Foundry

For the upgraded double ammo mould, you’ll need to complete the Sleeping Giants quest and earn 2,000 Foundry Reputation in the Giants’ Foundry minigame. This is optional but highly recommended for faster cannonball production.

How to Get the Cannonball Mould: Step-by-Step

Ready to grab the cannonball mould? Follow these steps to unlock it through the Dwarf Cannon quest.

Step 1: Start the Dwarf Cannon Quest

Head to Captain Lawgof, located northwest of the Fishing Guild and south of the Coal Trucks, near the entrance to the Dwarven Mine. Speak to him to begin the quest. He’ll ask for your help repairing a broken cannon.

Step 2: Repair the Cannon Railings

Captain Lawgof will give you a toolkit. Inspect the damaged railings around the cannon site and repair six broken sections by selecting the “repair” option. You’ll need no additional items—just the toolkit provided.

Step 3: Retrieve the Dwarf Child

Next, travel south to the Goblin-infested area near the Fishing Guild. Enter the watchtower, climb to the top, and speak to Lollk, a dwarf child. Escort him back to Captain Lawgof to proceed.

Step 4: Investigate the Missing Engineer

Lawgof will then send you to find Nulodion, the dwarf engineer. Head to the Black Guard HQ in the Ice Mountain area, south of the Edgeville Monastery. Speak to Nulodion, who will give you the cannonball mould and some notes to deliver to Lawgof.

Step 5: Complete the Quest and Keep the Mould

Return to Captain Lawgof with the notes. Once you hand them over, the quest is complete, and the cannonball mould remains in your inventory (or tool belt) for future use. If you lose it, Nulodion will replace it for free.

Upgrading to the Double Ammo Mould

For players wanting to double their cannonball output, the double ammo mould is a fantastic upgrade. Here’s how to get it.

Complete the Sleeping Giants Quest

The Sleeping Giants quest introduces the Giants’ Foundry minigame. Start it by speaking to Kovac in the Giants’ Foundry, located west of Lovakengj in Great Kourend. This quest requires 15 Smithing and has no combat, making it accessible after minimal training.

Earn Foundry Reputation

After completing Sleeping Giants, participate in the Giants’ Foundry minigame by smithing giant swords. You’ll need 2,000 Foundry Reputation to purchase the double ammo mould from the reward shop. At optimal efficiency (using high-tier moulds), this takes around 75-90 minutes.

Benefits of the Double Ammo Mould

The double ammo mould uses two steel bars at once to produce eight cannonballs every 4.8 seconds, effectively doubling your production rate. This boosts hourly Smithing XP to around 27,000 and increases profit margins significantly.

Tips for Using the Cannonball Mould Effectively

Now that you have the cannonball mould, here are some pro tips to make the most of it for combat, skilling, and profit.

Best Locations for Smithing Cannonballs

Choosing the right furnace can streamline your cannonball production. Here’s a table of top options:

Location	Distance to Bank	Requirements
Edgeville Furnace	Very Close	None
Port Phasmatys Furnace	Close	Ghosts Ahoy (faster with Morytania Legs 2)
Prifddinas Furnace	Close	Song of the Elves
Shilo Village Furnace	Closest	Shilo Village Quest (free with Karamja Elite Diary)

Maximizing Profit with Cannonballs

Check the Grand Exchange prices for steel bars and cannonballs before smithing. On average, one steel bar (around 400-500 GP) yields four cannonballs (worth 800-1,000 GP total), netting a profit of 300-500 GP per bar. With the double ammo mould, you can produce 4,320-4,800 cannonballs per hour, translating to 200,000-250,000 GP profit.

Using Cannonballs in Combat

Load your Dwarf Multicannon with cannonballs for Slayer tasks like Kalphites, Dagannoths, or Smoke Devils. It’s especially effective in multi-combat areas, speeding up kills and XP gains. Pair it with the double ammo mould to reduce crafting time and keep your cannon firing longer.

AFK Smithing Strategy

For a low-effort approach, smith cannonballs while working or watching a show. The regular mould allows longer AFK periods (up to 2.7 minutes per inventory), while the double mould trades shorter AFK time for higher output. Stockpile steel bars from mining or the Grand Exchange for extended sessions.

Final Thoughts

Getting the cannonball mould in OSRS is a simple yet rewarding process that unlocks a world of combat and skilling opportunities. Start with the Dwarf Cannon quest to grab the basic mould, then upgrade to the double ammo mould via Sleeping Giants for maximum efficiency. Whether you’re blasting monsters or banking GP, this guide has you covered. Grab your mould, fire up a furnace, and start smithing—your OSRS adventure just got a lot more explosive!