http://i.imgur.com/wSRvy6G.png](https://www.youtube.com/watch?v=0RB6D-ve20k)
Looks awesome! We started with a pneumatic shooter and by the time we finished that we saw all the videos with surgical tubing and prototyped that next, and it was basically me and one other guy doing all the shooter prototyping so we never got around to doing perhaps the most simple design 
I’m fairly impressed at how well it works. Best of luck
Awesome video, I love the production quality. Keep up the great work.
It is outstanding that you have a student discuss the advantages and disadvantages of each of the designs you tested.
The catapult looks promising:]