Their kickstarter page with video: http://www.kickstarter.com/projects/1803756771/trebuchette-t...
I got to give you guy’s kudos for the snap together design. To make something out of wood that does not require glue or be held together by string yet is strong enough to shoot a projectile (repeatedly) is quite a design challenge.
I remember the push out ply wooden toys you used to be able to get that would fall apart when you slotted them together.
But I was wondering if trebuchette was for geeks or 12 year old kids? I can see a big brother ambushing a little sister with this. So may want to supply goggles to avoid law suits.
Also you may want to do a fireproof version because I can see someone shooting projectiles that are on fire (I can't remember what they are called) with it just like they used to do in ye olde days.
I can also see a range of snap together wooden toys with this system. From castles to catapults to battering rams to cars etc.
Congrats on kickstarting your dreams.
(Edited for spelling and clarity)