Just Enough Mekanism Multiblocks guide for FTB StoneBlock 4 1.1.1 to 1.8.1

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Just Enough Mekanism Multiblocks guide for FTB StoneBlock 4

Written for FTB StoneBlock 4 1.8.1 · also fits 1.1.1 to 1.8.0 · updated Oct 11, 2026

Last verified for FTB StoneBlock 4 v1.8.1 on Oct 15, 2026 · text last changed Oct 11, 2026

A newer release (1.23.0) is out Guide for the current version

Also applies to:All the Mods 10 0.32 to 5.5All the Mons 0.3.0-beta to 1.3.0FTB Skies 2 1.9.0 to 1.24.0FTB Skies 2: Aero 1.9.0 to 1.10.0

Sections
4

3 sections are written for this pack; 1 is shared from another pack's guide.

Every recipe and number here was checked against FTB StoneBlock 4 1.8.1's own files.

What is Just Enough Mekanism Multiblocks?

Same as in the All the Mods 10 4.14 guide

Just Enough Mekanism Multiblocks is part of this pack at version 7.11, shipped as the 1.21.1 build of the mod. It has been in the pack since version 2.16 or earlier, so it's a long-standing part of the mod list.[1]

Unverified The sources I have don't describe what the mod does or who it's aimed at, so I can't confirm its features from them. Going by the name alone, it looks like a Mekanism multiblock helper for JEI, but that is unconfirmed here. Check in-game before relying on it. This site does hold FTB StoneBlock 4's own recipes, read from the pack itself: look the item up in the item browser.

Unverified I found no confirmed recipes, config options, quests or ATM Star path steps for this mod in the sources. Don't assume it gates any progression until you've verified that in-game.

How do you get started with Just Enough Mekanism Multiblocks?

1 part

There is no item to craft first for this mod, as far as the sources I have show. Its own text only describes multiblock information, so what follows is what that text tells you and nothing more.[2]

The mod's text includes two building entries: Better Fusion Reactor and Reinforced Induction Matrix. It also has a result line called Energy Per Antimatter and a specs line for Heating Elements.[2]

Tooltips to watch for

The tooltips are the most useful part when you plan a build. They are worth reading before you commit to a layout.[2]

  • A tooltip tells you to set the reactor's 'Injection Rate' to a given value.[2]
  • Another shows production per flow, and another shows what happens when 'Burn Rate' is at a given value.[2]
  • A steam tooltip gives the distance from the ceiling to a named part of the multiblock.[2]
  • Warning tooltips say the reactor will be damaged, or that water will be losing.[2]

Unverified The crafting recipes, quest steps and config options for this mod in the pack could not be confirmed from the sources, so no first-items order is given here.

How does Just Enough Mekanism Multiblocks work?

1 part

This one is short, and I want to be upfront about why. The only thing I have for this mod is its English language file, so I can tell you what its screens and tooltips say, but not the exact rules behind them.[2]

What the mod's text shows

The mod has labels for two multiblock builds: the Better Fusion Reactor and the Reinforced Induction Matrix. It also has a result label, Energy Per Antimatter, and a spec line, Heating Elements, which is filled in with a value.[2]

  • Building labels: Better Fusion Reactor and Reinforced Induction Matrix.[2]
  • Result label: Energy Per Antimatter.[2]
  • Spec line: Heating Elements, followed by a value.[2]
  • Injection rate tooltip: it tells you that you need to set the reactor's 'Injection Rate' to a given value.[2]
  • Burn rate tooltip: it reads 'When Burn Rate is' followed by a value, so the figures shown apply at that burn rate.[2]
  • Production tooltip: it shows 'Production per flow' with a value.[2]
  • Steam height tooltip: it gives the distance from the ceiling to a named point.[2]
Watch out: Two tooltips are plain warnings: 'Reactor will be damaged.' and 'Water will be losing.' The text doesn't say what triggers them, so when you see either one in a reactor entry, stop and check your setup before you build.[2]

Unverified The exact formulas, required block counts, injection and burn rate values, and step-by-step build or automation details for these multiblocks are not covered by the sources available for this guide.

Which Just Enough Mekanism Multiblocks config options matter?

3 parts

The config for this mod in the pack is the client file config/jei_mekanism_multiblocks-client.toml. Every option in it is a page visibility toggle, one for each multiblock the mod documents.[3]

In this pack, every one of those toggles is set to true, so all the multiblock pages are visible. If you ever want to declutter, flipping one of these to false is the option to reach for.[3]

Mekanism multiblock toggles

Mekanism Generators toggles

Addon multiblocks

There are also toggles for multiblocks from addon mods, and both are true here. multiblocks.mekanism_extras.extra_matrix.visible covers the extra matrix, and multiblocks.better_fusion_reactor.better_fusion_reactor.visible covers the better fusion reactor.[3]

Sources

  1. All the Mods 10 4.14 mod list · pack file
  2. jei_mekanism_multiblocks names, screen text and descriptions (English lang file) · official mod data
  3. FTB StoneBlock 4 1.8.1 config: config/jei_mekanism_multiblocks-client.toml · pack file
Where this guide comes from

Written from what FTB StoneBlock 4 itself ships: its files and recipes, the in-game guidebooks and the mods' own pages. Every statement links to the source it came from, and the numbers are checked against the pack before publishing.

Guide last verified Oct 15, 2026.

Guides for other versions: 1.23.0 · 1.22.0 · 1.21.0 · 1.9.0 to 1.20.1

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