>This Minecraft TNT cannon is semi-automatic, it is a cheaper version of making the cannon semi-automatic with repeaters BUT takes up a little bit more space. Build this design if you want to save up resources, but not space.
* – Takes up less resources. Also more resource-friendly than my other cannon design with a minecart: http://www.youtube.com/watch?v=wA5bsZGGqqk
* – Works just like every other basic cannon.
* – Takes up more space.
* – You need to refill the dispenser, BUT if you fully fill it with stackable items/blocks you will only have to refill it after 576 shots!
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