Minecraft Java Item ID

Heavy Core ID

The heavy core is a rare block looted from ominous vaults in trial chambers. Combined with a breeze rod in a crafting table, it creates the mace, a powerful smash-attack weapon.

✓ Verified for Java Edition 1.21.11

Namespaced item ID minecraft:heavy_core

Heavy Core Item Facts

CategoryMaterials

Maximum stack64

Available inSurvival and Creative

Historical numerical IDNot applicable

Historical numerical ID: This item was introduced after Java Edition 1.13, when numerical IDs were no longer used.

Give Command for Heavy Core

Copy the current Java Edition command, or open the generator to change the player and quantity.

/give @p minecraft:heavy_core 1

Customize this command →

Give command syntax by version

Java 1.13+

/give @p minecraft:heavy_core 1

Namespaced ID (current format)

Rows appear only when the underlying value is verified: the Java 1.8–1.12.2 row requires a reviewed historical numerical ID, and the Bedrock row appears only when this exact namespaced ID exists in the Bedrock registry.

How to Get Heavy Core

Finding Heavy Core

Heavy Core cannot be crafted at a crafting table. It must be obtained through normal gameplay.

Prefer commands? Jump back to the give command matrix above to get Heavy Core instantly.

What Can You Craft With Heavy Core?

Heavy Core is a crafting ingredient in 1 reviewed recipe:

Mace

Heavy Core in Minecraft: The Mace's Rare Ingredient

Quick answer: Use minecraft:heavy_core in Java Edition commands. The heavy core is rare loot from ominous vaults in trial chambers, and its only use is crafting the mace with a breeze rod, so guard it until the mace is made.

Ominous vaults and how to reach them

Heavy cores come only from ominous vaults, which need ominous trial keys. Drink an ominous bottle or carry Bad Omen into a trial chamber to convert trial spawners into ominous trial spawners, defeat them, and use the ejected ominous keys on the ominous vaults.

The drop is not guaranteed per vault, so expect several ominous chambers before seeing a core. Bring your best gear: ominous spawners throw armored mobs, projectiles, and potion effects at you in waves.

Source: ominous vaults, opened with ominous trial keys.
Ominous event: enter a trial chamber with Bad Omen or Trial Omen.
Chance is low per vault; plan multiple runs.

One core, one mace

Combine the heavy core with a breeze rod from Breezes in the same chambers to craft the mace. That is the core's entire recipe list, so there is no reason to hoard duplicates beyond collecting.

If you play with commands or creative testing, /give @p minecraft:heavy_core skips the vault grind, but in survival the core is the pacing item that makes the mace a mid-to-late-game weapon.

Heavy Core Command Examples

Give 1 to nearest player: /give @p minecraft:heavy_core 1
Give 1 to yourself: /give @s minecraft:heavy_core 1
Give to a specific player: /give PlayerName minecraft:heavy_core 1
Clear from inventory: /clear @p minecraft:heavy_core

Heavy Core FAQ

What is the item ID for Heavy Core?

The item ID for Heavy Core is minecraft:heavy_core. Java Edition commands such as /give, /clear, and /setblock use this namespaced ID.

How do I give myself Heavy Core in Minecraft?

Open the chat window and run /give @p minecraft:heavy_core 1 to give the nearest player one Heavy Core. Replace @p with a player name to target someone else.

How many Heavy Core can stack in one slot?

Heavy Core stacks up to 64 per inventory slot.

How do you get a heavy core?

Open ominous vaults in trial chambers with ominous trial keys. Trigger the ominous event by entering a chamber with Bad Omen or Trial Omen, clear the ominous trial spawners, and spend the keys they drop on ominous vaults.

What is the heavy core used for?

Its only recipe is the mace: one heavy core plus one breeze rod. The mace's smash attack scales with fall distance, making the heavy core the gateway to one of the strongest melee options in Java Edition.

Can you get more than one heavy core?

Yes, ominous vaults can be looted once per player per vault, and new trial chambers generate across the world, so dedicated farming yields additional cores, though the chance per vault stays low.

What can you craft with Heavy Core?

Heavy Core is used to craft Mace.