Original Titles: Hundreds of tools. 9 catapults, 1 prank, Why did I make NINE different catapults?, 17,875 pounds of tools to make.... this? Welcome to my shop. Today we'll be designing and building nine different ball bearing launching catapults. Why? Other than being a lot of fun, the catapults are the perfect vehicle to show you all of my major tools, how they work, and why I have them. I had fun making these, I hope you enjoy them too.