Duplication with Stars
by Sul4ur
Duplication with Stars adds a duplication item made from Nether stars and amethyst shards, which a hopper setup uses to copy items.
What it does
Players build the setup by placing a hopper, a lever to switch it, and optionally a lightning rod beside it. Nether stars go into the third slot and amethyst shards into the second, and the shard count has to exceed four times the number of Nether stars. Throwing a single copper block onto the hopper makes it vanish and yield a duplication item. That item is then placed in the third slot of the hopper, so items placed in the first and second slots are copied, the same way the earlier setup worked.
The item and its recipe ship as a data pack, and the mod is published for Fabric, Forge and Quilt across 13 release versions, 1.18 – 1.20.4. Lightning can replace the lightning rod step, and the required shard count can be changed in the config. Information is kept on the wiki, and holding Ctrl in the NBT view shows more data. The server must run the mod, while players may add it on their side and the mod works either way. The code is licensed under the Creative Commons Attribution Share Alike 4.0 license and is not open source.
Key features
Duplication item
A duplication item is crafted from Nether stars and amethyst shards and then used as the catalyst in the hopper setup.
Hopper-based duplication
Items placed in the first and second slots of a hopper are copied while the duplication item sits in the third slot.
Configurable shard count
The number of amethyst shards required per Nether star can be changed in the config file.
Lightning ignition
A lightning strike near the hopper, or a channeling trident thrown onto a lightning rod beside it, can start the process.
Gallery
Compatibility
Latest build for each game version and loader.
1.20.x5 of 5 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Better craftable beacons is a Client and server mod for Fabric, Forge and NeoForge across 1.18.2 – 1.21.11, released under the MIT License and not open source. Brick Hopper is open source under the MIT License and runs on Client and server across 1.15.2 – 26.3 for Fabric, Forge, NeoForge and Quilt, a wider loader and version set. Hopper Frame is server-side only, open source under CC0 1.0 Universal and limited to Fabric for 1.18.2 – 1.21.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Duplication with Stars | Fabric, Forge and Quilt | 1.18 – 1.20.4 | Server required, client optional | 2024-01-22 |
| Better craftable beacons | Fabric, Forge and NeoForge | 1.18.2 – 1.21.11 | Client and server | 2026-01-06 |
| Brick Hopper | Fabric, Forge, NeoForge and Quilt | 1.15.2 – 26.3 | Client and server | 2026-10-01 |
| Hopper Frame | Fabric | 1.18.2 – 1.21 | Server-side only | 2024-07-16 |
Questions
Does Duplication with Stars need to be on the server?
Which loaders does Duplication with Stars support?
Can the amethyst cost be changed?
In the catalog
Duplication with Stars is one of 7,216 Magic mods on ModsFinder, and one of 3,630 Magic mods for Fabric. 13,907 mods support Minecraft 1.20.4.
More from Sul4ur
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What the author says
This data pack allows duplication by using a new item called duplication stars, which can be made out of amethysts and nether stars. All you need to do is just to throw the item you want to duplicate and the nether star on top of obsidian and let magic do the rest...
Official listing
- Modrinth page
- modrinth.com/mod/nether-star-duplication
- Owner
- Sul4ur
- Published
- 2023-09-18
- Updated on Modrinth
- 2024-01-22
- Facts verified
- 2026-10-15