Iron Farm Schematics

An iron farm produces iron by spawning iron golems and killing them automatically. In Java Edition, villagers can summon an iron golem when they panic, for example when they can see a zombie, so most modern designs keep a group of villagers next to a trapped zombie, usually with beds nearby. The golems spawn in an area around the villagers, are moved into a kill chamber, often lava or a drop onto hoppers, and each one drops 3 to 5 iron ingots and sometimes poppies.

When comparing designs, check the Minecraft version the creator built and tested it in: golem spawning was reworked in 1.14, so many older farms no longer work, and Bedrock Edition uses different rules. Compare the footprint, how many villagers it needs and whether it can be stacked or tiled into several cells. Treat any rate the creator quotes as a figure for their own test conditions. The farm only runs in loaded chunks, so build it near where you will AFK.

To build one in survival, download the .litematic file, load it in Litematica and follow the layer-by-layer placement, gathering blocks from the materials list first. A schematic places blocks, not mobs, so you will need to bring the villagers and the zombie in yourself.