pickling a crank
Excellent read, and thank you. Many years ago, my machinist spoke to me briefly on the topic of grinding and polishing on cranks and the proper direction of rotation during each procedure. He told me you can do it at home with the ultra fine technique on a good used crank that mic's in consistently at spec, but that the more time and elbow grease the better. He said that even then, there is still a chance of leaving a burr that can gouge a bearing without being able to feel it. The biggest point he stressed was "The shinier, the better".
