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data pack

Heavy Core DuplicationMinecraft data pack for 26.3

This pack allows heavy cores to be duplicated using a crafting table, while requiring continued interaction with the trial chambers.

server onlynewest supported release 26.3UtilityEquipmentDecoration
Latest version
1.11+mod
Minecraft
1.21-pre1 to 26.3
Works with
Quilt, NeoForge, Forge, Fabric
Licence
CC-BY-NC-SA-4.0
Downloads
9.0k
Updated
29 d ago
Available on
Modrinth
Space NodeOur hosting

Host Heavy Core Duplication servers

Deploy a server with Heavy Core Duplication already added to the world, on hardware built for it.

  • 26.3
  • Data pack
  • Quilt
  • NeoForge
  • Forge
  • One click install
  • Version matched
  • Automatic backups
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Heavy Core Duplication declares support for, newest first, with the Java runtime that version needs.

Other data packs
MinecraftThroughJavaEvidenceReleased
26.3Data pack, Quilt, NeoForge, Forge, Fabric25+declared15 Sept 2026
26.2Fabric, Quilt, NeoForge, Forge, Data pack25+declared16 Jun 2026
26.1.2Fabric, Quilt, NeoForge, Forge, Data pack25+declared9 Apr 2026
26.1.1Fabric, Quilt, NeoForge, Forge, Data pack25+declared1 Apr 2026
26.1Data pack, Quilt, NeoForge, Forge, Fabric25+declared24 Mar 2026
1.21.11Data pack, Quilt, NeoForge, Forge, Fabric21+declared9 Dec 2025
1.21.10Fabric, Quilt, NeoForge, Forge, Data pack21+declared7 Oct 2025
1.21.9Fabric, Quilt, NeoForge, Forge, Data pack21+declared30 Sept 2025
1.21.8Fabric, Quilt, NeoForge, Forge, Data pack21+declared17 Jul 2025
1.21.7Fabric, Quilt, NeoForge, Forge, Data pack21+declared30 Jun 2025
1.21.6Data pack, Fabric, Forge, NeoForge, Quilt21+declared17 Jun 2025
1.21.5Data pack, Quilt, NeoForge, Forge, Fabric21+declared25 Mar 2025
1.21.4Fabric, Quilt, NeoForge, Forge, Data pack21+declared3 Dec 2024
1.21.3Fabric, Quilt, NeoForge, Forge, Data pack21+declared23 Oct 2024
1.21.2Fabric, Quilt, NeoForge, Forge, Data pack21+declared22 Oct 2024
1.21.1Fabric, Quilt, NeoForge, Forge, Data pack21+declared8 Aug 2024
1.21NeoForge, Quilt, Forge, Fabric, Data pack21+declared13 Jun 2024
1.21-rc1Data pack, Quilt, NeoForge, Forge, Fabric21+declared10 Jun 2024
1.21-pre4Fabric, Quilt, NeoForge, Forge, Data pack21+declared7 Jun 2024
1.21-pre3Fabric, Quilt, NeoForge, Forge, Data pack21+declared5 Jun 2024
1.21-pre2Fabric, Quilt, NeoForge, Forge, Data pack21+declared31 May 2024
1.21-pre1NeoForge, Fabric, Data pack, Forge, Quilt21+declared29 May 2024

Download

From Heavy Core Duplication’s own host. Nothing is re-hosted here.

For Minecraft 26.3

Choose the loader you use before downloading.

  • Fabric, Forge, NeoForge, Quilt

    1.11+mod · 3 Oct 2026

    Multiple loaders are listed; verify the file before downloading.

    Choose file on publisher ↗

  • Loader not listed

    1.11 · 16 Sept 2026 · DHC-1_11.zip

    Get release

Most recently published release

1.11+modrelease3 Oct 2026

heavy-core-duplication-1.11.jar · 0.6 MB · for 26.3, 26.2, 26.1.2, 26.1.1, 26.1 +3 more · Fabric, Forge, NeoForge, Quilt

Choose file on publisher ↗
606bd13348c0…
Older versions24
  • 1.1116 Sept 202626.3, 26.2, 26.1.2, 26.1.1, 26.1 +3 more0.3 MBf79794c91de7…Get
  • 1.10+mod17 Jun 202626.2, 26.1.2, 26.1.1, 26.1, 1.21.11 +2 more0.6 MB553 downloads67d2fd1ccf8d…Choose file on publisher ↗
  • 1.1017 Jun 202626.2, 26.1.2, 26.1.1, 26.1, 1.21.11 +2 more0.3 MB85 downloadsdcfa43e2533b…Get
  • 1.9+mod28 Mar 202626.1.2, 26.1.1, 26.1, 1.21.11, 1.21.10 +1 more0.6 MB674 downloads9c0b16e791bb…Choose file on publisher ↗
  • 1.928 Mar 202626.1.2, 26.1.1, 26.1, 1.21.11, 1.21.10 +1 more0.3 MB130 downloads408ef17e35c7…Get
  • 1.8+mod9 Dec 20251.21.11, 1.21.10, 1.21.90.6 MB882 downloads2f7d42dcca9c…Choose file on publisher ↗
  • 1.89 Dec 20251.21.11, 1.21.10, 1.21.90.3 MB156 downloadsab279dc572d4…Get
  • 1.7+mod30 Sept 20251.21.10, 1.21.90.6 MB386 downloads2697c5c96e3e…Choose file on publisher ↗
  • 1.730 Sept 20251.21.10, 1.21.90.3 MB111 downloads7b4087c1dbad…Get
  • 1.6+mod29 Aug 20251.21.8, 1.21.7, 1.21.6, 1.21.5, 1.21.40.6 MB451 downloads0250a0090fd9…Choose file on publisher ↗
  • 1.629 Aug 20251.21.8, 1.21.7, 1.21.6, 1.21.5, 1.21.40.3 MB108 downloads14bb2143dd3f…Get
  • 1.5+mod28 Jun 20251.21.6, 1.21.5, 1.21.40.6 MB228 downloads6a418b089bce…Choose file on publisher ↗
  • 1.528 Jun 20251.21.6, 1.21.5, 1.21.40.3 MB57 downloads2d19e6dd57a8…Get
  • 1.4+mod27 Mar 20251.21.5, 1.21.40.6 MB445 downloads942c0ed08e22…Choose file on publisher ↗
  • 1.427 Mar 20251.21.5, 1.21.40.3 MB100 downloads5e4d7a2e6eaa…Get
  • 1.3+mod8 Dec 20241.21.4, 1.21.3, 1.21.20.6 MB400 downloadsf78cfb5f7ce2…Choose file on publisher ↗
  • 1.38 Dec 20241.21.4, 1.21.3, 1.21.20.3 MB118 downloads713ff54fb7d6…Get
  • 1.1+mod23 Oct 20241.21.3, 1.21.2, 1.21.1, 1.210.6 MB1.4k downloads3437e6907f7f…Choose file on publisher ↗
  • 1.123 Oct 20241.21.3, 1.21.2, 1.21.1, 1.210.3 MB177 downloadsc6c867a42bd7…Get
  • 1.0+mod13 Jun 20241.210.6 MB1.2k downloadsbd2c245a7cd8…Choose file on publisher ↗
  • 1.013 Jun 20241.210.3 MB164 downloads2a78142e4839…Get
  • 0.35 Jun 20241.21-rc1, 1.21-pre4, 1.21-pre3, 1.21-pre2, 1.21-pre10.3 MB65 downloadsb2e44180a231…Get
  • 0.2-beta31 May 20241.21-pre24 KB63 downloadsa31e826bc66c…Get
  • 0.1-beta30 May 20241.21-pre14 KB60 downloads3d9282911045…Get

Frequently asked

Does Heavy Core Duplication work on Minecraft 26.3?

Yes. 26.3 is the newest Minecraft version Heavy Core Duplication declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Heavy Core Duplication support?

Everything the author has declared, from 1.21-pre1 up to 26.3. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Heavy Core Duplication on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

What licence is Heavy Core Duplication under?

CC-BY-NC-SA-4.0, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Heavy Core Duplication?

Data packs install per world: put the downloaded file in that world's datapacks folder and run /reload, or add it when creating the world. No loader is involved. On a server, the world folder lives next to the server jar.

Where do I download Heavy Core Duplication safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Details from Modrinth, where the author last updated it on 3 Oct 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .