Thick Neutron Reflector
Thick Neutron Reflector is a nuclear reactor component (fits into the reactor grid) that raises the EU output and heat of adjacent fuel rods.
Description
Players craft one Thick Neutron Reflector on a crafting table from 4 Neutron Reflectors and 5 Copper arranged in a checkerboard: reflectors on the edges of the 3×3 grid, Copper in the corners and the center. Six Thick Neutron Reflectors, Dense Copper and Iridium combine into the Iridium Reflector, a reflector that never loses durability, and six thick reflectors also anchor the Nuke recipe. For reactor designs that keep quad rods running for full cycles, Thick Neutron Reflector is the version sized for the job.
Guide
How to craft and use the Thick Neutron Reflector in Industrial Craft 2
-
1
Craft the basic Neutron Reflectors
Craft 4 Neutron Reflectors first, because the Thick Neutron Reflector recipe is built from them.
-
2
Assemble the checkerboard recipe
Place the 4 Neutron Reflectors on the edges of the 3×3 crafting grid and 5 Copper in the corners and the center; the recipe yields 1 Thick Neutron Reflector.
-
3
Install the reflector next to fuel rods
Put the Thick Neutron Reflector into the reactor grid so that at least one fuel rod occupies a directly adjacent cell — a reflector only serves rods it touches.
-
4
Track durability across the cycle
Quad rods drain 4 durability points per reactor tick; at 120,000 durability the Thick Neutron Reflector lasts a cycle and a half next to a Quad Uranium rod, so craft a replacement before the old one disintegrates.
-
5
Upgrade to the Iridium Reflector
Combine 6 Thick Neutron Reflectors, 2 Dense Copper and 1 Iridium into an Iridium Reflector that never loses durability.
Thick Neutron Reflector generates no EU and no heat on its own — every point of extra output comes from the fuel rods whose pulses the reflector bounces back.
How to craft this block
Used in crafts
Frequently asked questions
Which neutron reflector matches which fuel rod?
The basic Neutron Reflector holds 30,000 durability, enough for a cycle and a half next to a single Fuel Rod. Thick Neutron Reflector holds 120,000 and covers the same runtime next to a Quad Uranium rod; the Iridium Reflector never wears out.
How fast does a Thick Neutron Reflector wear down?
Every reflected pulse costs 1 durability point, so a dual rod drains 2 points and a quad rod 4 points per reactor tick. A Thick Neutron Reflector squeezed between four quad rods loses 16 durability per reactor tick.
What is the Thick Neutron Reflector used for besides reflecting?
Six Thick Neutron Reflectors form the core of the Nuke recipe; the same count, plus 2 Dense Copper and 1 Iridium, crafts the Iridium Reflector.
Does a reflected fuel rod also produce more heat?
Yes: a neutron reflector raises the heat output of adjacent rods together with the EU output. Plan extra cooling for every rod a reflector serves.
Minecraft and all related materials are trademarks and copyrights of Mojang Studios © 2009–2026. This site is not an official Minecraft product and is not affiliated with or endorsed by Mojang Studios or Microsoft Corporation.