Minecraft wiki entry for Door-based_iron_golem_farming, associated text: The most important part of any farm is its spawning floor, both in regards to maximising spawning area and the speed at which it can remove spawned entities to be replaced. In the following video, Panda describes a unique spawn floor design that drastically increases both of these. Combine this spawn floor with any of the other designs to improve its output. (Spawnpads still work in 1.8).