How To Make a Canon Minecraft TNT (2/9 steps)
Step 2: Foundation
To begin with, you will generate a 10 x 4 rectangle of some kind of solid blocks, better for this is obsidian as it will not break if the explosions defines without water damage. Then you remove the strip of 8 blocks that you can see in the birds flight view. This is where TNT is subsequently placed. Do not put in DTT yet well. Continue by placing 2 more solid blocks on the two front blocks on the left side. Then add a fence to the end out of the ditch and put a pressure plate / rug on top of it. Add redstone in the scene show. Next, add water to the last block of the air strip. If done properly, you end up with a stream of water that goes straight to the fence and stops there. Subsequently make sure that the DTT does not blow up the blocks you are using. If you want you can also add blocks under the water jet and fence.