AcceptableRisk writes – “The trebuchet is a medieval invention originally designed to lay seige to fortresses and castles. The largest of them could hurl immense stones hundreds of yards. Now you can have one to play with in your own home. The whole device stands about foot tall when unloaded and flings various things ten feet or more. Moreover, this is a nice introductiory woodworking project that you can do with mostly basic tools. Make sure to check all of the images. A lot of the details are in the notes there.” – Link.