Someone just published a book on how to do these bows, now where did I see the review on this book...lemme see, hmmm..OH YEAH, Primitive Archer Magazine! Now where did I put those memory pills I was supposed to take?
You gotta promise that if you build one, you will take lotsa pics and post them all on here. Then you have to take the finished product to the International Flight Shoot out on the Bonneville Salt Flats west of Salt Lake City and shoot for a score with it, and post pics of course.
Shop online for some gemsbock horns, they also go by the name of oryx. They are getting less expensive all the time, used to run about $100 for an unmatched pair, I have seen some sell for a lot less lately.