Just Enough Mekanism Multiblocks
Just Enough Mekanism Multiblocks adds a multiblock page to the item viewer, with cost lists and calculators for tank capacity and reactor heat.
What it does
Players open the multiblock page from any category in the item viewer, or press the Show Uses key on a multiblock's ingredient item (U by default). The page lists what the multiblock costs to build and includes calculators for its behavior, so a player can plan a build before gathering materials.
The mod adds a button to the item viewer interface and works with Fluid and Gas tanks, the Fission Reactor, the Thermoelectric Boiler, the Dynamic Tank, the Thermal Evaporation Plant and the Induction Matrix. On the Fission Reactor, a fuel assembly is placed on a cell with a left-click drag, removed with a right-click drag, and its height set with the mouse wheel.
The mod runs on Forge and NeoForge across 6 release versions, 1.16.5 – 1.21.1, and is released under the MIT License. It is open source, and its source code and issue tracker are public. Only the client needs it, since it adds interface pages and changes nothing on the server.
Key features
Multiblock cost page
A viewer page lists the materials needed to build each supported multiblock.
Tank capacity calculator
Calculates the fluid and gas capacity of a tank from its size.
Fission Reactor calculator
Estimates the temperature and heating rate of a Fission Reactor from its fuel assembly layout.
Sodium cooling calculator
Works out the sodium cooling rate of a Thermoelectric Boiler.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Planning a reactor build
A player can lay out fuel assemblies in the calculator and check the heat output before placing any blocks in the world.
Checking material costs
Before starting a large base, a player can look up what each multiblock needs without leaving the item viewer.
Who it’s for: Players who build multiblocks and want cost and reactor figures inside the item viewer, on Forge or NeoForge clients.
Questions
Does Just Enough Mekanism Multiblocks need to be on the server?
Which loaders does the mod support?
How does a player open the multiblock page?
In the catalog
Just Enough Mekanism Multiblocks is one of 8,499 Technology mods on ModsFinder, and one of 4,122 Technology mods for Forge. 32,366 mods support Minecraft 1.21.1.
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What the author says
Find multiblock page on JEI all categoires. Or press the JEI's 'Show Uses' key on multiblock's ingredient item. (Default is 'U'.) Left click, drag: Place the Fuel Assembly on cell. Right click, drag: Remove the Fuel Assembly on cell. Wheel scroll: Adjust the height of the Fuel Assembly on cell.
Official listing
- Modrinth page
- modrinth.com/mod/just-enough-mekanism-multiblocks
- Owner
- gisellevonbingen
- Published
- 2023-08-04
- Updated on Modrinth
- 2026-09-22
- Facts verified
- 2026-10-15