Do it yourself, otherwise know as diy, is really the only way to go when it comes to building catapults. This website not only shows you how to build catapults, but it also has a catapult design contest. Every year, they review tons of catapults to pick a couple winning entries. Pretty cool, if you as me. Go here for awesome catapult kits, catapult plans and catapult blueprints. You will be happy you did!

For more info on catapults click here!