This project was a "cooperation" with my son. We have seen a device on the local Christmas market and built our own. First task was to create a plan in SketchUp
(Honestly I was a bit in hurry hence the drawing is not too accurate..)
If you are interested in building the catapult as well, you can find the SketchUp file on the bottom of this site.
Then we went to the workshop and started to build out of scrap wood
You want to see in action - here you go
Too fast? Watch the slow motion