Minecraft wiki entry for Iron_golem_farming, associated text: The farm requires a basic tools: a bucket for both water and one lava block, one hopper, a large amount of torches, and several stone or iron pickaxes. Collecting all the required building materials is time consuming: primarily wood, wool, and cobblestone. It is best to collect your materials far away from the village. Trying to gather all the materials too near the village risks attracting zombies that can kill the villagers. You can estimate the number of fences you need by walking around the village perimeter; it is likely to require at least 4 stacks of fences (with a few fence gates) to make the village escape-proof and entry-proof, and 3 stacks of torches for adequate lighting.