22AD not only builds and operate a wide range of catapults, a great deal of effort goes in to helping the community though activities and education. A number of simple plans are offered for free and many people are given advice on their own projects. 22AD can help schools with fund raising with the Have-A-Go Range which allows kids to fire a range of different types of tennis ball throwing catapults. At the other end of the scale 22AD has delivered academic presentations for university classes. 22AD also offers a number of more advanced plans and some parts for more powerful catapults. If it involves catapults 22AD probably does it.