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I wanted to show my son the process of designing, printing and assembling so I chose to make a catapult. This is a very simple design, and quite robust.
Good use of a rainy afternoon.
Print the following:
1 x Arm
2 x Side
3 X Crossbeam
You may have to whittle the crossbeam end to make them fit, but that's fine, you want a really snug fit.
Fit the crossbeams to one side and then add the second side, use a hammer to persuade them to fit.
Use a length of filament to thread through one side, the arm and the other side.
Use a rubber band to power it.
I will probably update this soon, the axle and fixing points need to be better.
Robust Simple Catapult by mattjoyce is licensed under the Creative Commons - Attribution - Share Alike license.
So what's this mean?
We're sure mattjoyce would love to see what you've printed - take a photo and share it on Thingiverse as a Make.
To post a Make simply visit this Thing again and click I Made One to start uploading your photo. You can also download the Thingiverse Mobile app (available via Google Play and Apple App Store) to take a photo and upload your Make right from the app!