How to get Blast Core in LEGO Fortnite - Upcomer
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Four LEGO Fortnite characters inside a cave holding weapons.
Image via Epic Games

How to get Blast Core in LEGO Fortnite

Blast Cores are huge for LEGO Fortnite progression. Here's how to get them, and what to do with them when you get one.

If you want to get explosives in LEGO Fortnite, you’re going to need to figure out how to get Blast Cores. While the game doesn’t tell you where to get them, it’s actually fairly simple if you know what to do.

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While it’s simple to get them, you are going to need to defeat an enemy to get your hands on one, and unfortunately, that won’t be so easy. You’ll need to be prepared for this battle, so gear up with a sword and a shield if you intend on getting one.

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Where to find Blast Cores in LEGO Fortnite

The only place you can find Blast Cores is in LEGO Fortnite’s Dry Valley caves. Hunting anywhere else for these will leave you empty-handed, so don’t waste your time.

Specifically, you’re looking for Blasters, who are black and red creatures that look similar to the Rollers you find in the Grasslands. They pack a punch though, so be warned.

A LEGO Fortnite character inside a Lava Cave, looking at a Blaster.
Keep your distance. Screenshot via Upcomer

How to harvest Blast Cores in LEGO Fortnite

To harvest Blast Cores in LEGO Fortnite, you simply need to kill Blasters. As I said before though, these monsters can deal some major damage, so take the fight seriously.

They will chase after you and explode if they get too close, so treat them like Creepers from Minecraft. Long-range combat is ideal here, so take a crossbow with you if you have one, as I found that the easiest way to take them down.

Once you manage to take one down, you’ll be able to pick the Blast Core up off the ground and add it to your inventory.

What are Blast Cores used for?

Blast Core is used to create the Metal Smelter in LEGO Fortnite. This is very important for your progression, as you need this machine to smelt Copper into Copper Bars.

This will allow you to create stronger, more powerful tools, so is a major step in your LEGO Fortnite world.


Now that you have Blast Cores, check out how to get other important materials in LEGO Fortnite like Knotroot or Flexwood.

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