Free Catapult Plan

The Free Catapult Plan - this plan shows the layout and design of the Table Top Troll Catapult. It is an easy to make catapult that is powered by rubber bands and has a base that is twelve inches (12") in length. This is a pretty easy project to make and you can do it in a couple of hours. It is quite poweful and of course the power is dependent on the rubber bands you use. I recommend you screw and glue all the parts together for maximum strength. Of course everything is just recommended and you should feel free to modify anything you like and substitute anything for the parts you have available.

The Catapult Plan is located at the bottom of this page:

If you came to this webpage directly from a link or a search engine: This Catapult Plan is the plan that accompanies the tutorial on how to make a catapult. The tutorial takes you through all the steps, complete with lots of pictures, on how to make the table top troll catapult. You can find the assembly tutorial here: The Table Top Troll Catapult. (There is also a video of the table top troll catapult firing off)

I have also put a larger version of this catapult plan on a clean webpage so you can easily print it out. Here

About the Catapult Plan

There are a couple of things I want to point out about the plan:

  • The Red Marks are screws or nails and glue. This shows how the different parts of the catapult are affixed to each other
  • Dotted Lines - if you are not familiar with blueprints the dotted lines represent parts that are behind other parts.
  • The Stopping bar - There is a wooden cross piece on the catapult where the arm hits up against after you release it. This bar affects the trajectory of the projectile you fire. If you want your projectile to go in a higher arc then move this stop bar down; and of course if you want a lower trajectory on your projectile then bring the stop bar up.
  • The Pivot Bar - I used the axle from a toy car and it worked great. When installing the pivot bar insure it is high enough up so the swinging arm does not touch the table or floor.

Here is the Catapult Plan:

Want to build a bigger, better, more powerful or fancier siege engine? There are some great books available to you. These books, available at Amazon.com, will help take your trebuchet or catapult building to new heights! Pun intended!

How to make a catapult book cover

The Art of the Catapult: Build Greek Ballistae, Roman Onagers, English Trebuchets, and More Ancient Artillery - Nice book that shows you how to build ten different catapult projects, moderate wood working and pvc piping kind of stuff. Good book with complete instructions and materials lists.



Backyard Ballistics

Backyard Ballistics: Build Potato Cannons, Paper Match Rockets, Cincinnati Fire Kites, Tennis Ball Mortars, and More Dynamite Devices Want to get a little more creative? This book is off the hook!



Whoosh Boom Splat: The Garage Warrior's Guide to Building Projectile Shooters





Looking for a catapult kit?

Amazon.com also has a catapult kit you can build

Catapult Kit

Working Wood Catapult Diy Kit, 6" X 5" X 10"

Expand your kingdom one cubicle at a time with this working replica of one of the most infamous and powerful siege engines... the catapult. When completed, the catapult can shoot a ball of soft clay more than 15 feet! Lay seige to your entire department with this formidable weapon and mercilessly crush cubicle uprisings. Includes all needed parts and soft modeling clay for projectiles. Requires knife and wood or white glue for assembly



Science experiment Catapult KitScience Project Experiment Catapult Kit (S.P.E.C.K.)

The Ultimate Science Project Experimenter's Catapult Kit! It's fully adjustable, multi-configurable and repeatable. It's a perfect model for learning the scientific method! All in all, there are more than 400 different configurations and tuning options possible with this kit. Suitable for hundreds of experiments and learning opportunities. The completed frame is 14.5 inches long, 7 inches wide and 11 inches tall. The arm measures 20.25 inches long with multiple axle and power attachment points. This machine can hurl projectiles up to 40 feet, depending on configuration, tuning, and lots of other variables! What you can learn: This kit provides a real world, hands on example of many aspects of basic physics. It exposes the student to concepts of mechanical advantage, levers, gravity and energy, to name a few. It can demonstrate the storage and conversion of potential energy to kinetic energy through levers, and it is equipped with optional wheels, to demonstrate conservation of momentum. All in all, the concepts of efficiency, power and work can be demonstrated and applied. This kit is useful for teaching engineering, science, design of experiments, problem solving and cause-effect relationships. It was designed to get students to think about physics in a real world, tangible context. Theories can be made and tested; this process, and analyzing why the observed results occur can ultimately lead to other, more advanced concepts in physics, mechanics and mathematics. Analyzing the data can make use of statistical methods from basic averages to much more advanced topics if desired. With 18 pages of instructions including assembly of every basic configuration, suggested experiments, tuning guidelines, independent and dependent variables to record and measure, data tables, historical information about trebuchets and catapults, and more, it should be easy to get started with this Ultimate Science Project Kit!


Desktop Trebuchet Desktop Trebuchet Defend your desktop! The mere presence of this striking machine on your desk will induce fear and respect among your peers. Take charge and besiege your opponents with a fully functional, genuine trebuchet for your desk! It really works! It takes about two to four hours to assemble, which is a joy in itself with the hand selected wood and computer-controlled, precision cut parts. The professionally designed kit and fully detailed instructions - 10 pages of descriptions and tips, with of photos of every step - makes assembly a breeze. All you really need is some glue and a pair of scissors. For a more refined look, a little sandpaper and a small, round file would be helpful, but are entirely optional. Performance! This mighty desktop artillery is capable of hurling the wooden ball projectiles (included) ov


What good is a catapult if you don't have a castle to attack!

Make a paper and cardboard castle

I have another project you might like. It is the Paper Castle and it has everything you could want in a castle making project including all the art work you can download. You just follow the instructions and make it yourself with some glue and cereal boxes. Build a Paper and Cardboard Castle It also has a learning sheet that helps to learn about castles when you are building it.



If you are looking for something easier to make you might want to try my project on making a popsicle stick catapult. Fast, easy and fun project! Goes great with the paper medieval castle. Make a popsicle stick catapult




Catapult Game

Storm The Castle Catapult Game - Build a Popsicle stick catapult and hurl paper balls at the castle. How to make the Game and the catapult are here


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Table of Contents for this tutorial


  1. Make the Table Top Troll Catapult Home and materials requred
  2. Begin assembly of the sides and base
  3. Assemble the catapult firing arm
  4. Complete the assemblly and finish by painting
  5. Video of this catapult firing
  6. DVD's Documentaries about siege engines
  7. Free Catapult Plan
  8. Send me your catapult pictures!

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