A general comment on how-to instructions: I really respect and appreciate that this article addressed pitfalls where mistakes are common and disastrous. The st

A general comment on how-to instructions: I really respect and appreciate that this article addressed pitfalls where mistakes are common and disastrous. The step involving a router to clear a cavity: lots of mistakes were made, because it's hard to do that step. It takes courage to for an instructor to admit mistakes, and the pupil learns all the better from those admissions. For all of the Instructable, Pinterest, and various other how-to articles on the internet, I believe we could all benefit from instructors being more forthcoming about pitfalls like the author(s) of this article.