Editing Tutorials (section)

====Advanced design====
A proven design with a high yield is to build a hollow tower with e.g. stone wall blocks, resulting in a 1.5 block wide hole. Start at ground level (or water level and build at least 12 levels high, to make sure, that Iron Golems will spawn only on top of the tower. Put a sign on the interior side of the wall 2 level below the top and add 1 level of water above that sign. Iron Golems will spawn on this water block and fall down.

Build this wall tower deep into the ground – you will dig a hole of 3x3 to be able to place the walls. Place a chest at the lowest point, about 24 blocks below the water block in the tower (or about 12 blocks below ground level). Place a hopper above the chest. Assure, that the wall of the tower is made of non flammable blocks (as e.g. stone). Put 1 level of <code>lava</code> on top of the hopper.

To let spawn the Iron Golems, put 3 villager in a glass box about 15 blocks over ground (3 levels above the tower). Put a boat in another box 3 blocks away and lure a zombie into that boat. He will jump in the boat and stay there. Name him with a name tag and cover him from direct sun light.

[[File:Ironfarm.png|150px|thumb|left|Iron farm]]

As soon as the Zombie sees the villagers, he will try to attack them – resulting in the spawn of three Iron Golems (as we have three villagers). They spawn on the water block and will fall immediately down to the kill zone. To finalize, you will put <code>carpet</code> on all blocks of the villager and zombie boxes and on additional glas blocks around the tower. Don't forget to put a copper rod on top of the villager box to avoid their transformation into witches by lightning.