Take your 28 inch long piece and drill a hole in one end so your broomstick or pipe slides easily through it. The Bungee Cord is the most important thing so using different cords will change the strengthh or adding a second cord.
The pivot point (The hole in the swing arm that the broomstick goes through) is an important energy point. This week, several excellent bloggers have teamed up to provide a play series of ideas for what to do with ALL of the candy that will be entering our homes this month! We’re going to show you four different catapult versions that can all be built with items from around this house. Some friends of ours helped us come up with good catapult designs, and all of the boys (8 boys total!) had fun launching candy corn! Aidan’s friend built this awesome catapult out of clothes pins, craft sticks, binder clips, rubber bands, duct tape, and a plastic spoon.
The design for this catapult was modified from the siege catapult in Mini Weapons of Mass Destruction: Build Implements of Spitball Warfare. Here is a guide to help you build your own desktop catapult, great for launching your balled up waste paper at the garbage can, giving your wastebasket-shooting arm a rest! Drill holes with the 15?32 inch (1.2 cm) bit at the one inch marks at a 50 degree angle to the board.
Glue the dowels together where they meet at the top, then lash them with twine for support. Spread the uprights sufficiently to install the launch arm, then replace the cross arms, gluing them into position.
Carve a suitable "cup", or projectile holder from your scrap of 2X4 lumber, rough shaping it with a circular saw, then rotary rasps, and finally a sanding disk or sandpaper. Glue or lash guide pieces for the travel of the launch arm between the two cross beams, and from the base diagonally up the path of travel of your arm. Fasten a spring at the bottom of the launch arm to a point on the opposite side of the base, using twine.
Meet Lois, a wikiHowian from California who has been active in the community for over 9 years.
To change things up from my regular posts, I decided to write instructions on how to make a simple catapult.
When finished, I found that the best items to launch from this type of catapult was mini marshmallows commonly found for a few dollars at a grocery store.
I chose a simple design that would be easy for the boys to follow and would allow plenty of time to launch marshmallows at a target. Step 2 – Tie another rubber band tightly around the opposite end so all 7 sticks are bound together.
Step 4 – Insert the 7 sticks banded together through the 2 stick bundle as shown in the illustration below.
If these instructions helped you in anyway, please leave me a comment or link to this page so others can find these instructions as well.

Step 2: Break two short pieces (same length) and one longer piece of the second pair of chopsticks and tape them to the base as shown in the picture below.
Step 3: Join the other ends of the sticks you taped together to form a 3-dimensional triangle. Step 5: Attach the catapult arm to the frame and tie a rubber band around the catapult arm and the top of the triangle. I’m extremely impressed with your writing skills and also with the layout on your blog. Plan: Build a catapult that is less than one meter in height and less Decide what kind of material to use for building the catapult. The Catapult Plan and Blueprint: Make the Table Top Troll Miniature Catapult These books, available at Amazon. History of seige weapons and how to build your own backyard trebuchet quickly and inexpensively. Building a CatapultThe catapult that is described here will throw a water balloon several hundredfeet. Slide the broomstick through one end of the catapult, through the swing arm then through the other end of the catapult.
Generally the longer the swing arm the more power you will get so try using a piece of wood that is longer than 28 inches.
If it is too tight, or too loose it will absorb energy and decrease the efficiency of your catapult.
Hot melt wood glue will save a lot of time on this step, and a dab of glue will help secure the lashing twine when it is knotted. The spaces should be located so that the pivot point is an open space about 1?2 inch (1.3 cm) wide, which will be the location for it to be placed on the pivot beam.
This can be carved by hand if you prefer, since it will be a fairly small piece of wood to hold securely while using your power tools for carving.
You will want to be certain to lash this tightly and glue the lashings in place to avoid accidentally launching the complete cup when you fire the catapult.
Adjust the tension so that the launch arm can be drawn back to a horizontal position for loading and firing. Pull back the launch arm and release it from various draws to determine the range and power you are looking for.
She enjoys reviewing new edits, welcoming new editors, and starting new articles on crafts or activities she’s learned. I’m a Den Leader for my local Webelos cub scouts group and we are working on the engineering activity badge. Many designs (including the one provided in the scout handbook) were fairly complex and would require a long time to built.
We’ll show you how, using only two sets of wooden chopsticks, a rubber band, and duct tape. Cut a longer stick to a suitable size (you can experiment with how long this should be) and make a cup out of tape on one end.

Experiment with how tight you tie this rubber band to adjust how far the catapult launches. These plans have been purchased by hundreds of trebuchet enthusiasts, students, team building consultants and event planners from around the world. You don't have to make a cup you could cut down a plastic cup so it is about 2 inches deep and staple that down. When you do this you will probably have to tinker with the location of the crossbar to get things just right.
All the components for this project cost less than $15 (US), and there was no problem finding them. Some carpenter's wood glue applied to the ends of these dowels will help hold them securely in place. Leave another space about 1 1?2 inches (3.8 cm) long at the top end of this assembly (the launch arm). If the arm and pivot bar are tight enough to keep the assembly in alignment, these pieces can be left off. Using a stronger spring will make your catapult more powerful, but this is not always desirable, since it causes a lot of stress on the moving components. If none of the parts become loose or lose tension, you can launch similar size and weight projectiles with remarkable consistency using this device. She is proud of helping lots of people; she has started 223 articles and reached over 24 million readers with her advice.
They absolutely love decorating them with felt pens, and shooting off anything they think won’t put an eye out. If you have wood glue or someone to help you with hot glue, you can use that instead of the tape. You can change the angle the catapult shoots from by sitting it on a notebook that you can tilt. Most hardware stores have an assortment of various springs, so you may need to experiment a bit here to find one that works for you. She enjoys the fun of editing and how helpful it allows her to be, and she says she is constantly learning new things there. This catapult can be used as a craft idea for kids on a slow weekend or it can be used as a school project. After following these instructions, it only took the scouts about 10 minutes to complete everything and start participating in trying out their new catapult.
She appreciates how people in the wikiHow community are friendly, offering to help before judging or criticizing you.
If your plan is to build a trebuchet all on your own, then this article will help you do it with style.

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