I googled bow saw blade sharpening and found that I do not need a tooth setting tool. I'm going to try to sharpen and old blade and see how it does.
that was a pretty good demo video, one thing that I have found is that even new bow saw blades usually need the cutting teeth set, setting tools used to be really common a yard sales and second hand tool stores, because no one knows what they are for, A bow saw is a very handy tool when it us used right and in good shape.