Primitive Technology: making a spear thrower

I love the well-made "Primitive Technology" videos. In this one, the guy (I don't know his name but he live in Australia) makes a few spears and a spear thrower, using only materials he finds in the wild. He even starts a fire without matches to harden the spear points. After, we get to see him do target practice.

From his FAQ:

Q.Why don't you talk in the videos?

A.When I watch how to videos I fast forward past the talking part to see the action part. So I leave it out of my videos in favor of pure demonstration.