Also you have to take into consideration that breeders on a large scale do this to make sure everything is healthy and what not. Another reason people put a cut in the eggs is so that the snake doesn't drown inside of the egg. I recall somebody recently posting something about their BP dying inside of the egg because it wasn't able to pip through because of a weak tooth. Cutting avoids this. I'm not saying it's a common issue but when you breed on a large scale you're going to have issues no matter what.