The Warlpiri are expert aeronautical engineers. Their boomerangs are asymetrical “L” shaped made from naturally bent and iron hard pieces of wood. They are hewn with a hand axe and an adaze before they are hardened in a fire. You can find out a lot more by clicking here:
Warlpiri boomerang
On the Aboriginal Dreamtime and Bushtucker Tour see boomerang throwing and spear throwing form the experts. And you’ll have the chance to have a go yourself
PDF