Guys, I really appreciate all your comments. I wish it was possible to cover knapping in depth, but as any knapper will tell you, this tutorial barely scratches the surface. Knapping is a lot like playing the guitar: it's easy to pick up the basics, but it'd take a lifetime (or three) to master it. After a few tons of rock and 17 years of hard practice, I feel like I'm getting the hang of a few things, but there'll never be enough time to master it all. The good thing about that is I'll never get bored. GGG
Chrisg, I'd love to see pics of some of the chert you're finding over there! This week I've gotten rock from Poland, England, France, and Denmark. Never had the chance to see any from South Africa, though! If you're up for some kind of trade, let's chat.