A balloon powered rocket car, handmade from local timber and birch ply off cuts at the Hohenfried Werkstätten in the German Alps. Hohenfried Heimat is an open community of learning disabled adults and children, providing sheltered accommodation,
Wooden Ballista Kit Ancient siege weapon - you know, for fun! Build your own desktop ballista that really fires! Laser cut wood builds a ballista based on an an Ancient Roman design. Fires about 30 feet!