I first wrote about countersinking a few months ago and, by pure chance, the article just sat around unpublished. Meanwhile, countersinking from time to time, it became clear to me that the process, while reasonably effective, was not the intuitive cure-all that I had originally hoped. Fortunately, there was still the opportunity to add some thoughts. So this is actually two articles in one, the original followed by an entirely different approach that I think is just as accurate and much more user-friendly. See what you think.