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This is the ultimate mob grinder it is very effective and easy to make. I'll be making it in creative but it is meant for survival

Step 1: Finding the Perfect Building Space

Find a large flat area.

Step 2: Getting Started

Build a row of twenty blocks.

Step 3: Adding Water

Do the same two blocks over and connect them at the ends. Then fill both ends with water and you should have four blocks in the middle without water.

Step 4: Making a Cross

Now break the two blocks that are not touching water on both sides. Then add a row of eight blocks to it forming a cross. Then fill them with water.

Step 5: Filling in the Empty Spaces

Just follow the pics for this one.

Step 6: Making the Hole of Death

In the four blocks without water dig a really deep hole. It has to be really deep so that the mobs will die when they fall. I think the minimum is 25 blocks but I'm not positive.

Step 7: Getting Back to the Surface

At the bottom of your hole dig into the side of the wall and make a long tunnel. If it isn't long enough you will dig into your grinder. Then dig up putting ladders on the wall as you go. Don't forget to put a door on the big hole that mobs will die in.

Step 8: Making the Room Completely Dark

Add walls and a roof and make sure no light is getting in or mobs won't spawn. It should be completely dark.

Step 9: Enjoy

Just walk down the ladder and go down the tunnel, open th door and TaDa free mob items. Enjoy your unlimited arrows.
<p>This was a very helpful post,I always wanted to learn this but did not know how to</p>
Also, does it have to be diamond
<p>No</p>
<p>good tip.</p>
When I try this for step 3, the water only covers one of the blocks adjacent to the whole (instead of both like in the picture). This is the eighth block, one has water one doesnt. I tried adding more water, but that resulted in water rushing out at the bottom of the hole of death. How do I place the water correctly? Thanks
LET THE MOB SLAYIN BEGIN
Sorry for the late reply
In the instructable it is in creative but I built it out of dirt and cobble in survival
i can say that: AWESOME
Did u build this in creative or survival mode?
cool i made one before i saw this one but it it still spawns like crazy. im making a third one ha ha
Haha thanks
omg soooooooooo cooooooooooooooollllll lawl bro
Awesome
Nice
Thanks
cool

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