But with a few common items, it’s easy to bring his double-armed catapult to life. Even at such a small scale it’s easy to see that da Vinci was on to something.

From crazy builds to fun DIY ideas, we test wild concepts and bring science to life in unexpected ways." How Satisfying? Build Your Own Mini Tic Tac Catapult With This Guide.

Owner Makes Amazing DIY Self-Fetch Catapult for His Rescue Dog. Published Apr 20, 2023 at 6:59 AM EDT ... "I hoped at the time that I could find someone else's design online and just copy it.

But even with a good trigger, hurling the ammo properly can be tricky – something you learn early on when figuring out how to build a catapult. Let go too early, and it shoots straight up.

And I love the classic design. Now we're going to add a catapult. Now I'm going to use my scissors to carefully make a very small cut. I use a pen to open it up.