BrassBound Skies

 Build brass factories on the ground — and airships in the sky.

Overview

**Brassbound Skies** is a NeoForge 1.21.1 kitchen-sink pack built around **Create Aeronautics** and **Sable**: contraption airships, thrusters, and sky exploration on top of a deep Create tech tree. On the ground you’ll find factory automation, Applied Energistics storage, industrial power, and classic magic/adventure mods — dragons included. Roughly **380** mods; expect a heavyweight, feature-rich experience rather than a minimalist progression pack.

Features

Create & Aeronautics

– **Create** with a large addon stack for factories, logistics, and decoration
– **Create Aeronautics** + thrusters, radar, toolgun, and related flight tooling
– **Sable** for the Aeronautics physics/render experience
– Big Cannons and other Create combat/contraption toys for ship-to-ship (and ship-to-everything) chaos

Tech & Automation

– **Applied Energistics 2** (plus ExtendedAE / MegaCells-style expansion)
– **Mekanism**, Immersive Engineering, PneumaticCraft, Industrial Foregoing, Oritech
– Power options including Powah, Extreme Reactors, Flux Networks, and Create Nuclear
– ComputerCraft (CC: Tweaked), LaserIO / Pipez-style logistics, Compact Machines

Magic & Adventure

– **Ars Nouveau** (+ Elemental) and **Iron’s Spells ’n Spellbooks**
– Occultism, Witchery, Apotheosis, EvilCraft
– **Ice and Fire** dragons, Alex’s Mobs, Mowzie’s Mobs, and structure-heavy exploration
– Worldgen via Terralith, Tectonic, Regions Unexplored, and assorted structure packs

Quality of Life & Multiplayer

– FTB Chunks / Teams, Open Parties and Claims, Waystones, Wormhole
– Sophisticated Backpacks & Storage, Farmer’s Delight food stack, Macaw’s building mods
– JourneyMap, Jade, JEI, Voice Chat, Simple Radio
– Performance helpers included on client (e.g. Sodium) — see notes below about shaders

Requirements

– **Minecraft:** 1.21.1  
– **Loader:** NeoForge **21.1.x** (pack built on **21.1.238**)  
– **Java:** 21  
– **Recommended RAM (client):** **8–10 GB** allocated (this is a heavy pack; 6 GB is usually too low)  
– **Dedicated server:** plan for **10 GB+** Java heap and spare host RAM (12 GB+ host is a practical starting point)

Important notes

– **Do not use Iris (or similar shader loaders) with this pack.** Iris conflicts with **Sable** / the Aeronautics render stack and can hang on the Mojang loading screen. **Sodium is fine; Iris is not.**
– Client and server must stay in sync for multiplayer. Content mods (Create/Aeronautics/Sable, claims, voice chat, etc.) need to be on both sides; pure client HUD/render mods (JEI, Jade, JourneyMap, Sodium, etc.) stay client-only.
– First launch and first world load can take a long time — let the pack finish loading before force-closing.