Reactor Builder

Texture from Colossal Reactors, used under MIT.

colossal_reactors:reactor_builder

Recipes and uses come from the FTB Evolution 2 1.4.0 dump: the server's final recipes after all pack scripts ran.

Last verified for FTB Evolution 2 v1.4.0 on Oct 17, 2026 · v1.4.0 released Oct 17, 2026

No crafting or machine recipe in FTB Evolution 2 produces Reactor Builder. No recipe in FTB Evolution 2 uses Reactor Builder as an ingredient.

How do you craft Reactor Builder in FTB Evolution 2?

Reactor BuilderMod recipe

Crafting Shaped

Crafting Shaped

any tough alloy ingot	any tough alloy ingot	any tough alloy ingot
any amethyst gem	any diamond gem	any amethyst gem
any tough alloy ingot	any tough alloy ingot	any tough alloy ingot

Recipe id: colossal_reactors:crafting/reactor_builder

What is Reactor Builder used for in FTB Evolution 2?

No crafting or machine recipe in FTB Evolution 2 uses Reactor Builder.