This thread is printed off and will go into my flat fold Knapping Notebook, for easy table top reference, as will the one on Arrowheads you plan to do next, and as did one or two from Paleoplanet by other great knappers on slightly different (knapping) subjects. I have a couple of these Notebooks (with printouts of threads on knapping, Cane arrow making, stone point hafting, "nutters", and other subjects of interest to me) and they have been and will be a big help to me when doing/attempting these skills, since my memory doesn't always retain like I wish it would and it is hard to refer to a Table top Computer while working. They also will be of value to someone else someday, I am sure.