how to build a TNT cannon in MC. another word of advice i never covered, the tnt explosion will hurt you, so move a little back before you fire to not have an accident. also, when you go raiding, be sure to bring extra TNT, you might mess up your cannon, i have been making these for years but i rarely make them perfect on the first try. Thanks for watching, please like comment and subscribe. |--| (Recorded with.