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How to Craft Heavy Core in Minecraft

Heavy Core in Minecraft, drawn from the game's own item texture. This one cannot be crafted. Found in ominous trial vaults. Minecraft has used the name Heavy Core since 1.20.5.

Heavy Core cannot be crafted in any grid. The only way to get one is this: found in ominous trial vaults.

Heavy Core Item ID and Give Command

The item ID for Heavy Core is minecraft:heavy_core. In commands the namespace may be left off, so heavy_core works too. Checked against Minecraft Java 26.2.

Give yourself one
/give @p heavy_core
Give a full stack of 64
/give @p heavy_core 64
Give it to a named player
/give Steve heavy_core 1

Cheats have to be on for Heavy Core to appear this way, and the same command works on Bedrock Edition, where the name is written the same.

Overview

The Heavy Core is found in ominous trial vaults and is used to craft the mace weapon. Rather than being crafted at a workbench, heavy core is obtained through gameplay: found in ominous trial vaults. From there you use it directly in the world or as an ingredient in other recipes.

Once you have it, heavy core is used for crafting the mace. Because there is no recipe to fall back on, it is worth collecting more than you think you need whenever you come across a source, so a shortage never stalls a project mid-way.

Items like this that are gathered rather than crafted tend to gate progress: you cannot simply assemble more from raw blocks, so each one represents time spent exploring, fighting, or searching the right structure. Plan a dedicated trip to its source, bring the gear that trip demands, and bank a comfortable surplus while you are there. That way heavy core is never the thing standing between you and the recipe or task that needs it.

Materials Needed

ItemAmountWhere to Find
Heavy CoreHeavy CoreHeavy Core1xFound in ominous trial vaults

The only thing you need is Heavy Core (found in ominous trial vaults). Keep a few spare in your inventory, since this item is consumed wherever it is used.

Heavy Core in Minecraft. It has no crafting recipe. Found in ominous trial vaults.

Tips & Notes

  • Because Heavy Core cannot be crafted, stockpile it whenever you get the chance rather than going looking for more at the moment you need it.

Uses for Heavy Core

  • Crafting the mace

What Heavy Core Goes Into

One other recipe on this site lists Heavy Core as an ingredient.

MaceMaceMaceCrafting Table

View detailed item stats, durability and properties for Heavy Core on the Astroworld Items Database.

Frequently Asked Questions

How do you get Heavy Core in Minecraft?
A Heavy Core is not crafted at a station. You obtain it directly: found in ominous trial vaults. Once you have it, you can use it in the world or as an ingredient in other recipes.
What can you make with Heavy Core?
Heavy Core is an ingredient in 1 other recipe on this site, including Mace. The section above links to each of them.
What is the item ID for Heavy Core in Minecraft?
In Java 26.2 the Heavy Core goes by minecraft:heavy_core; heavy_core without the namespace does the same job in a command.
What is the give command for Heavy Core?
The command for Heavy Core is /give @p heavy_core. Add a number for more than one, so /give @p heavy_core 64 hands you a full stack, and it only runs with cheats enabled.
How many Heavy Cores fit in one stack?
A Heavy Core stacks to 64, so a full inventory of 36 slots holds 2304 of them.
What version of Minecraft added the Heavy Core?
Minecraft 1.20.5 is the oldest release that calls the heavy core by that name. What you see in the grid above is how it works in the current release.

Sources

How far back it goes
Java 1.20.5 is the earliest release that calls it this. From all 163 released Java clients, rd-132211 to 26.2.
Stack size
The Astroworld Items Database, built from the same jar.

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