12,000 rivets
Van's supplies the required rivets, about 12,000 I believe. Keep track of the number of rivets that you drill out. If you waste more than 100, then order 100 more. Or wait until the plane is almost done and see how many rivets that are left. I keep a shopping list, but wait until I absolutely have to have a part, and then order everything on the list at once to save on shipping.
Joe