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The Office Supply Trebuchet
The Office Supply Trebuchet - This is a great little trebuchet that was built by a web visitor (Brandon N.). He made it completely out of office supplies and it fires honey roasted peanuts about 20 feet! Nice work here. He has also included a parts list in case you want to make one! Get the pencils and the rubber bands and have some fun!
A Note from Will: Remember that a few very important things here are how you make the sling and the little pin at the top of the swing arm. This pin allows the string and pouch to open up correctly. You will have to tinker with the little pin to get maximum efficiency. I have plenty of info about this on my other trebuchet project pages.
Parts list for this trebuchet:
- ~30 rubber bands 12 #2 Pencils
- 12 AAA Batteries 4 AA Batteries
- 3 Paperclips
- 1 Staple
- 1 Small Piece of Vinyl Fishing Line




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

Catapult Design, Construction And Competition With the Projectile Throwing Engines of the Ancients

 
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.
Buy from Amazon.com: The Art of the Catapult: Build Greek Ballistae, Roman Onagers, English Trebuchets, and More Ancient Artillery
 
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!
Buy From Amazon.com Backyard Ballistics: Build Potato Cannons, Paper Match Rockets, Cincinnati Fire Kites, Tennis Ball Mortars, and More Dynamite Devices

Whoosh Boom Splat: The Garage Warrior's Guide to Building Projectile Shooters
These are the homemade machines that you've dreamed of building, from the high-voltage Night Lighter 36 spud gun to the Jam Jar Jet, the Marshmallow Shooter, and the Yagua Blowgun. Including detailed diagrams and supply lists, Gurstelle's simple, step-by-step instructions help workshop warriors at any skill level achieve impressively powerful results.

Adventures from the Technology Underground: Catapults, Pulsejets, Rail Guns, Flamethrowers, Tesla Coils, Air Cannons, and the Garage Warriors Who Love Them

Sneaky Uses for Everyday Things: How to Turn a Penny into a Radio, Make a Flood Alarm with an Aspirin, Change Milk into Plastic, Extract Water and Electricity ... a TV with Your Ring, and Other Amazing Feats

Gonzo Gizmos: Projects & Devices to Channel Your Inner Geek - It's possible to use optics to roast a hot dog without electricity or a stove; to make a simple radio with just an iron, a few basic circuits and three shiny pennies; and to assemble a simple steam-powered boat with a plastic bottle, a candle, copper tubing and a nail. Of course, only die-hard science nerds would attempt these projects.

Kits and More Siege Engine Projects
Another Interesting Project: How to Build a Trebuchet
The Trebuchet was a unique siege engine of the middle ages. It was extraordinarily powerful and was easier for military engineers to build because it used gravity as the energy source. I also have a complete project on how to make the Little Dragon Trebuchet.
Amazon.com also has a catapult kit you can build

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
 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) over twenty feet! Just load-up the counterweight bucket with about 150 pennies and you are ready to go!

The Miniature Trebuchet - The trebuchet was the ultimate artillery weapon of the medieval period and early renaissance. A large and unwieldy weapon, it was typically built on-site during battle, and tuned to lob great weights - such as the carcasses of rotting horses and pots of burning pitch, over the castle walls and onto its inhabitants. This is our newest and smallest trebuchet design in a long line of catapult kits. Designed by master trebuchet expert Ron Toms, this machine is ideal for the student on a budget or as a wonderful display piece for any desktop or bookshelf of any history enthusiast. Precision carved by computer controlled machinery for guaranteed fit and accurate joinery. The detailed instructions include loads of photos of each step of the construction process, tuning tips and safety notes. Included in the kit are four wooden projectiles, all the necessary components for the sling, trigger, and counterweight bucket as well as all the parts for the kit. The only thing you'll need to supply are 64 pennies for counterweight and a few simple tools - Scissors, a ruler, a utility knife, wood glue and a few rubber bands to hold the pieces together while the glue dries. Tools required: Scissors, Glue, Ruler, rubber bands and a utility knife. Sandpaper is optional. Additional Counterweight Required: 64 pennies. Range: About 10 feet.
What good is a catapult if you don't have a castle to attack!

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

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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