One of Bob’s favorite answers to some of our questions in class was the phrase – just enough. Someone would ask “How much solder should I use?” And Bob would answer “Well, you need just enough.” Or the question would be raised “How long should the tab be?” The answer – “Well, it needs to be just long enough.”
And we would all laugh/groan. We knew what it meant. It meant no one can give you a number, a formula. It meant you need to try, gain experience, work with the materials, understand them, and you will come to learn how much is just enough.