Obsidian is a sturdy Minecraft building block vital for crafting things like Nether Portals, enchantment tables, and Ender Chests. Nether Portals are required for Survival Mode players to defeat the Ender Dragon and "win" the early game.
Obsidian is created whenever a lava fountain block is poured over it. It must be harvested with a diamond or Netherite pickaxe, otherwise the broken obsidian block will not drop anything and will simply be destroyed.
Because of the block's strength, as well as its usefulness in crafting, many Minecraft players have come up with methods to farm or generate it manually and automatically.
Minecraft: Making an Automated Obsidian Farm
While the Minecraft community has created dozens of designs to grow/generate obsidian both actively and AFK (away from the keyboard), one popular design has automated the process using redstone and pistons to selectively control the flow of water.
This allows obsidian to be harvested in a rather safe and controlled manner than potentially dropping it into lava inside an underground cave or mine shaft.
To create this obsidian farm, Minecraft players can follow the steps below:
- Dig a hole three blocks wide and one block deep. Surround this hole with non-flammable blocks such as dirt, cobblestone, iron, andesite, etc.
- Use buckets of water to create a stream of water that enters the 1×3 hole. Make sure it doesn't flow elsewhere, such as over non-flammable blocks.
- On the side opposite the water flow, place three inward-facing piston blocks over the non-flammable blocks. Place redstone repeaters behind each piston and connect them with redstone powder. On the other side, place a block with a stone button and run a redstone chain from the repeaters. Place a fourth piston at the end of the trench between the water and the pistons. Make sure the piston is facing in as well. Activate that piston with a redstone torch and make sure the piston, when extended, has a block of extra space in front of it. Pass the redstone dust from the redstone torch to the front of the generator and place a connected lever.
- Above the fourth piston at the far end of the trench, create an enclosure that leaves a block of empty space. This should allow the lava to be placed on top of the piston safely, so make sure this cabinet is also non-flammable. Fill the space with lava from a bucket.
- Line the trench between the water and the pistons with redstone powder.
If done correctly, when Minecraft players activate the outer lever, it should create obsidian blocks over the points in the trench where the element was placed. Once the lava stops flowing, simply switch the lever again to allow safe mining of the obsidian blocks.
Before mining, pressing the stone button should use the pistons to remove the lava that presides over the blocks. Afterwards, simply collect the obsidian and replace the redstone dust from the trench. Minecraft players can rinse and repeat this method whenever they want.
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