You are practically done with this mangonel and there are just a few small details you should do to make it complete. The picture below shows you what you need to do. First, make yourself a little cup out of cardboard and glue or staple it to the end of the catapulting arm.

Then you just need to make the releasing mechanism. Put one eye hook or electrical stape in the end of the throw arm then put one in each of the legs of the catapult as shown. You should be able to easily put a piece of coat hanger through all three. When you pull this coat hanger out the catapult fires the projectile!

If you need to fire this catapult off from a distance just use a straight piece of coat hanger and tie a long string to it and you are good to go! Now the only thing that remains is for you to paint it or decorate it in any way you please. Have fun with your Mangonel!! I have a video of this whole project located here: Video on how to make a small mangonel catapult

Make a Tabletop size PVC Catapult

Pvc is plastic pipe and it is readily available and very cheap at every home improvement store. I give you the parts list and show you how to make this easy to make catapult. Make a PVC Catapult

Make a Cardboard Catapult

This is an easy project for a powerful catapult. You need almost nothing to make it. I give you the template. Cut out the pieces and glue it together. Make a Cardboard Catapult

Da Vinci Catapult Kit, Wood

The Leonardo Da Vinci catapult model is scaled to size and fully functions to demonstrate the launching power of the catapult, a historical military device. The catapult flings soft clay balls (included) up to 15 feet to reproduce a realistic discharge, and is made of wood for durability. The model requires assembly. Mechanical models are typically built by hobbyists and model builders for personal use, or can be used as educational aids or projects in classroom settings.

Amazing Leonardo da Vinci Inventions: You Can Build Yourself

Amazing Leonardo da Vinci Inventions You Can Build Yourself introduces readers to the life, world, and incredible mind of Leonardo da Vinci through hands-on building projects that explore his invention ideas. Most of Leonardo's inventions were never made in his lifetime—they remained sketches in his famous notebooks. Amazing Leonardo da Vinci Inventions You Can Build Yourself shows you how to bring these ideas to life using common household supplies. Detailed step-by-step instructions, diagrams, and templates for creating each project combine with historical facts and anecdotes, biographies and trivia about the real-life models for each project. Together they give kids a first-hand look into