Tutorials/TNT cannons

This TNT Cannon was originally made by Spidiweb7. All credit goes to him.

TNT is an explosive in Minecraft. Using that, Water and Redstone can be a deadly combination. These cannons can be designed in different ways. Some are made for long range needs, and there are some that can shoot in multiple directions, such as this one:Tutorial by TheWarlemming

There also other entities in Minecraft that can be propelled by TNT as such arrows that are attached to one of the projectile TNT, which can rain arrows down on the fields, or even arrows that are attached to the booster TNT itself. The latter can be used to propel multiple arrows at a target, and has several advantage over the dispenser/arrow turret traps. This includes propelling several arrows at the same time without large scale redstone circuitries and a large number of dispensers. However, it can be expensive due to the cost of TNT, can be dangerous if executed incorrectly, and needs manual loading after every salvo. However, a sophisticated system of redstone circuits and dispensers full of arrows can create a incredibly deadly weapon- a remote-firing, long-range grenade launcher cannon, complete with incredibly deadly shrapnel as an added bonus. It can prove useful in multiplayer sieges, as the explosion blows a hole in walls, then the arrows kill anyone not murdered by the explosion. And then there's a hole to fire another one into! You can smell the carnage just reading about it!

A picture(of the non-dispenser and arrow version) can found here at noobcake labs.

Materials
- Base Material: (all solid blocks can be used)

- 1x Water Bucket

- 6x Redstone Dust

- 2x Redstone Torch

- 4x Redstone Repeater

- 1x Stone Button

Ammunition
- TNT

Building the Cannon
A demonstration of this cannon can be seen here

360 cannon
This cannon shoots 360°. It's simple to make. A video is here: http://www.youtube.com/watch?v=-S3QH6hRRgg

Materials
- Base Material: (all solid blocks can be used)

- 2x Water Bucket

- 18x Redstone Dust

- 2x Redstone Torch

- 5x Redstone Repeater

- 1x Stone Button

Ammunition
- TNT

Materials

 * Dimensions: 12x4x3
 * Base Material: any solid block
 * 1x Water Bucket
 * 20x Redstone Dust
 * 9x Redstone Repeater
 * 1x Stone Button

Ammunition

 * TNT

Range

 * 106m horizontal when fully loaded with 8+1 TNT blocks. Airburst.
 * 82m horizontal when loaded with 7+1 TNT blocks
 * 76m horizontal when loaded with 6+1 TNT blocks
 * 78m horizontal when loaded with 5+1 TNT blocks
 * 58m horizontal when loaded with 4+1 TNT blocks
 * Less than 4, payload will only launch vertical and will damage the cannon.

Building the Cannon

 * An tutorial on how to build this cannon is shown here.

Animal/Human cannon
Very dangerous. You probably always die. A video can be found here: http://www.youtube.com/watch?v=JeV0XB-w_yM You can place a transparent block (e.g. sign) on the block where the TNT would go to shoot yourself. If you are wearing full diamond, the initial blast will not kill you, but the fall will if you don't land in a deep section of water.

List of Videos on Minecraft TNT Cannon

 * http://www.youtube.com/watch?v=dqKUjZLZlZw
 * http://www.youtube.com/watch?v=JeV0XB-w_yM
 * http://www.youtube.com/watch?v=y2B05ClyA4U