Introduction: How to Make a Trebuchet

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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

Step 1:

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)
7. Washers
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
 

Step 2:

Step 1:

Build the base of the trebuchet using Popsicle sticks and stick them to each other using super glue as shown.

Step 3:

Step 2:

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.

Step 4:

Step 3:

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. 

Step 5:

Step 4:

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.

Step 6:

Step 5:

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.

Step 7:

Step 6:

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. 

Step 8:

Step 7:

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 

Step 9:

Step 8:

Attach the throwing arm using super glue. 

Step 9:

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.

Step 10:

Step 10:

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.

Step 11:

Step 11:

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!! 

http://issuu.com/howtowithmanish/docs/how_to_the_trebuchet

Comments

author
Nala2322 (author)2017-02-22

how do you use it to throw

author
PaytonG2 (author)2017-02-08

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author
Micky Flanagan made it! (author)2016-12-06

when you need to launch a 50 pound stone 550 feet but you only have popsticle sticks

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author
zazenergy (author)2011-09-06

Fun! I love how you did this with popsicle sticks!

author
BrandyH25 (author)zazenergy2016-12-06

Don't judge how I made my trebuchet with popsicle sticks. Thanks!

hs-cKUas.jpg
author
AndyC9 (author)zazenergy2015-02-17

How do i launch the projectile?

author
yapoyo (author)2012-09-09

Awesome. What are eye hooks? Do you mean screw eyes?

author
BrandyH25 (author)yapoyo2016-12-06

No I mean eye hooks. Thanks!

author
howtowithmanish (author)yapoyo2012-09-09

Yeah Screw Eyes. They are called Eye Hooks here in Pakistan. Please rate this Instructable and follow me if you liked it :)

author
yapoyo (author)howtowithmanish2012-09-09

Could you add a picture of the screw eye you used?

author
BrandyH25 (author)yapoyo2016-12-06

No.

author
howtowithmanish (author)yapoyo2012-09-10

Hey sorry. I went on the wrong note last time. I actually used washers. Not screw eyes. Sorry for the mistake there.

author
yapoyo (author)howtowithmanish2012-09-12

Washers? I know you used that to attach the axle, but what did you use to attach the counterweight?

author
howtowithmanish (author)yapoyo2012-09-13

Yeah you can use screw eyes there. But I didn't use them in my model. Instead I used just some string to attach the counterweight. In Singapore on the other hand they super glued the screw part to the trebuchet and the eye part was used to cling onto the counterweight.

author
yapoyo (author)howtowithmanish2012-09-13

oh i get it now. Thank you.

author
yapoyo (author)howtowithmanish2012-09-09

Rated 5 stars and i'm following you as well:)

author
krapy kon (author)2012-04-21

that is cool! I made one to and it shot abuot 15 yards :)

author

Thank You. :) If you liked this Instructable, please follow me. :)

author

I don't think you should use this website to get follows from people, this is about education. Thanks!

author
hurricane97 (author)2011-10-29

how far does it throw?

author
BrandyH25 (author)hurricane972016-12-06

I'd like to inform you that this trebuchet can throw at an estimated distance of at least three inches. Thanks!

author

Depends on the counterweight and the weight of the projectile itself. , mine threw about 10 meters.

author
AndyC9 (author)howtowithmanish2015-04-01

I have to throw throw my clay projectile over a few decametres how an i adjust it so it can go further?

author
Kookiekash (author)2016-10-02

How big is this project

author
Kookiekash (author)2016-10-02

Can this go over 16 feet?

author
DebbieG66 (author)2016-04-15

My daughter made this for a school project but the "bag" is hitting the base. Do you know what could be causing this?

author
FrodoandSam (author)2012-11-14

How far do you think it'd throw stuff with the sling?

author

With this, I managed around 5 - 8 meters.

author
Lopezx20 (author)howtowithmanish2016-04-14

How many popstickil sticks do I need

author
studentstrugglefam (author)2016-01-27

is anyone here because they have to do this for a social studies project

author
Smash the windowK (author)2015-11-05

I'm also gonna do it for my science fair project, great instructions

author
hccsa-knight-11 (author)2015-10-28

Sounds like a sweet idea! I have a school project and am going to use this design probably.

author
ThomasB23 (author)2015-05-04

thx ill that as a idea

author
yapoyo (author)2012-09-29

I built it but the projectile just rolls out of the basket and lands half a meter behind me.

author
howtowithmanish (author)yapoyo2012-09-29

I faced that problem in the start too. So I put a weight onto the trebuchet so that it was sturdy enough. And I used smaller projectiles.

author
Rebreg (author)2012-04-23

If you want it to throw farther modify it so the counter weight goes under the pivot point and use a sling for the pouch.

author
howtowithmanish (author)Rebreg2012-04-23

Interesting. Thank You for the tip. I will consider it. :) Follow me if you liked this Instructable

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Bio: I am an A-Levels Student at Karachi Grammar School, Pakistan. My passion is physics and mechanics and I want to be a Mechanical Engineer in ... More »
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