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Fluid Sieve: Rewoven

by Crioch

Fluid Sieve: Rewoven adds sieves that filter items, fluids and entities, and it is a Fabric mod for Minecraft 1.21 – 1.21.8.

FabricClient and serverMIT LicenseOpen source1.21 – 1.21.8

What it does

A sieve sits in the world and processes what lies beneath it. The mod checks the block state, the position and the location of a sieve when it works, and it can react to a random entity inside the sieve. Entity properties and entity scores can also be tested through the predicates the mod exposes, so a sieve's output can depend on the mob or player involved.

Fluid handling in this version is limited. Fluids can flow through a block, and the mod handles only the loot tables for empty and water fluids. Items placed in the block beneath the inventory are added to it, and anything else spawns in the world, so the behavior stays close to the original sieve design while fuller fluid support is planned for later.

Fluid Sieve: Rewoven is published for Fabric only, for 1.21, 1.21.3, 1.21.5, 1.21.7 and 1.21.8, and it runs on client and server. Fabric API is required. The code is open source under the MIT License.

Key features

  1. Item and fluid filtering

    Sieves filter items and fluids, returning output based on what the sieve is given.

  2. Predicate-based loot

    Block state, position, location and entity predicates can each shape which results a sieve produces.

  3. Entity-aware sieving

    A random entity inside a sieve can affect results, and entity properties and scores can be tested.

  4. Fluid flow through blocks

    Fluids can pass through a block, a behavior added for the 1.21 update.

Compatibility

Latest build for each game version and loader.

1.21.81.0.2+1.21.8
1.21.71.0.2+1.21.7
1.21.51.0.2+1.21.5
1.21.31.0.2+1.21.3
1.211.0.1
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

Questions

Does Fluid Sieve: Rewoven need Fabric API?

Yes. Fabric API is a required dependency, so it must be installed alongside the mod on Fabric.

Does the server need the mod?

Yes. Installation covers the server and each player's game.

Which fluids does the mod handle in its loot?

Only the empty and water fluids have loot handling so far. Other fluids are planned for a future update.

In the catalog

Fluid Sieve: Rewoven is one of 8,499 Technology mods on ModsFinder, and one of 4,201 Technology mods for Fabric. 17,695 mods support Minecraft 1.21.8.

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What the author says

If the block beneath them has an inventory the items are added to it, otherwise they spawn into the world. Loot tables for a specific fluid should be added at /loot_table/sieve/ /.json within the. For Minecraft's water fluid and the String Sieve, that would look like minecraft/loot_table/sieve/water.json.
Crioch, on the Modrinth page

Official listing

Owner
Crioch
Published
2024-06-13
Updated on Modrinth
2025-07-29
Facts verified
2026-10-15

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