Quick and easy RESOURCE FRIENDLY 4x4 vault door
Channel: Minecraft Hephaestus
Date: 22/09/2017

Today I will show you how to make an incredibly resource friendly 4x4 vault door that I designed! It is pretty easy to build, and is uses few materials -- only two observers and only 6 repeaters! To my knowledge, it's 1.10+

Minecraft version: 1.11.2