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Make a Cardboard Catapult Part 3

In this part of the tutorial we continue building the catapult.

Part 1 of this tutorial is here



Add bottom piece

On the bottom of the catapult we glue on two pieces like this. That one I am gluing in the picture is that left over number 2 piece. And the larger piece there on the right is the number 3 piece. Notice the orientatation of the catapult.





Add crossbar

Now glue one of the number 2 glue stacks as a cross beam across the top of the catapult.









Swing arm

Now let's do the swing arm.

There are four pieces labeled number 4. Glue them together one right on top of the other.







The pivot

Now we are going to put a hole in it for the pivot. Make a hole about in this location on the rounded end to match whatever you are using. It could be a pencil you are using or a dowel or something else.








The hole

The hole is done. Looks good.










Notice ths part

Now notice this point here at the bottom of the cross beam you had glued on.









Now place the swing arm on the side of the catapult like this. Notice how it is right near the line you drew for the bottom of the cross bar. And notice how there is a little bit of room at the bottom of the swing arm. That bit of space allows it to rotate when you fire it. And notice how the swing arm is placed at about a 45 degree angle.



Push a pencil through the hole in the swing arm to mark the catapult. And do this on the other side.










Assemble it

Now you can install the swing arm. And notice how the notch in the swing arm is facing down. This will hold the rubber band in place.


NextLet's continue with the tutorial






Wooden catapultMOTA Catapult - Desktop Battle Kit -

  • Engage in a fun hands-on learning experience and build your own desktop catapult with the included easy-to-understand instructions and pre-cut wooden pieces
  • Test your precision and your catapult's power, or change the trajectory angle with the adjustable cord
  • Take aim and fire away with five lightweight wooden ammo that's safe for indoor use
  • Replicate the ancient art of war, or learn about the physics and engineering while constructing the catapult
  • Guaranteed fun for all ages, imagination and wood glue not included


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