Keva Contrapations Catapult Watercraft and Aircraft All you have to do

All you have to do is design and color

Just add imagination

range of diverse offerings and competitive pricing

With his sad eyes but yet cheeful leopard ribbon

Keva Contrapations Catapult Watercraft and Aircraft All you have to doBuild your own authentic catapult with planks, a little glue and the help of easy, step by step instructions. Then let the fun and experimentation begin! What shoots farther, a marshmallow or a piece of macaroni? How does the objects course change when you pull the arm back to different points? If you make the flight deck higher, how does it affect the hurl? Includes pre drilled planks, wood glue, leather strap, ruler, rubber bands, cup, 2 balls,