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Here is a Simple Way to Build a Trebuchet.
A trebuchet is a siege engine that was used in the Middle Ages to fling projectile of up to 140 pounds at enemy structures.
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Made By Manish Kumar
What you need:
1. Popsicle sticks
2. Super Glue
3. Double-Sided Tape
4. Electrical Tape
5. Sharp Scissors or a Knife
6. Round Pencils (as an axle)
8. Any sort of counterweight. (I used coins - See step 10 on how to make a counter weight)
9. Any sort of Projectile (I used polo :P)
10. Eye Hooks
Build the base of the trebuchet using Popsicle sticks and stick them to each other using super glue as shown.
Fortify the base from the other side by sticking more Popsicle sticks. First line the top and the bottom edge with a popsicle stick each. Glue them firmly and wait till they dry. Then Do the same for the right and left sides. Repeat this layering until you have two layers. This will give the structure a firm base.
Create a structure as shown below. Do this by using a Popsicle stick and placing two other sticks at an angle on either side of this stick, then place another popsicle stick over it to fortify the pillar.
Repeat Step 3 and create a similar structure. These will act as pillars or columns to support the upper body (the axle) of the trebuchet.
First use super glue to join the pillars to the base. And let it dry for a while to strengthen the structure.
Then use washers and place them between the two pillars. One must make sure that the holes in the washers are big enough for the pencil to fit through. Use another Popsicle stick to fortify the two pillars together. Use double sided tape if necessary.
Insert the pencil through the washer hole on one side and out of the other hole. Use electrical tape and tie it on either side of the pencil so that the pencil cannot come out of the washer. Make sure that the tape is wounded several times across the pencil until it makes a stack wide enough to prevent the pencil from slipping out of any edge.
Create a structure as shown. This will act as the throwing arm of the trebuchet. Use your scissors to add small pieces of wood from the Popsicle stick to fortify the throwing arm. Create a small cradle like structure and attach it to one end of the arm. This will hold your projectile. Secure it using super glue.
Then attach a popsicle stick across the two sticks fanning out so as to join them. Punch a hole in this stick
Attach the throwing arm using super glue.
Attach a posicle stick across the two sticks fanning out. Punch a hole in this stick halfway through. It will act as a counter weight carrier.
Make a counter weight by inserting heavy metal pieces/ stones (I used coins) in a plastic zip loc bag. Close the zip loc and punch a hole on top.
Insert one end of the eye hook into the hole punched in the throwing arm, the other side should be inserted in the hole in the zip loc bag. Place a projectile in the box and FIRE AWAY!!