>Aren’t you just making my point? If they have to get a reactor out of a nuclear submarine, they have to cut the whole thing open. Engine work is either done in

>Aren’t you just making my point? If they have to get a reactor out of a nuclear submarine, they have to cut the whole thing open. Engine work is either done inside shell is cut open and they just reweld it back. It isn’t cheap at all. Nope. My point was that you can have things in hyper hard conditions, underwater at high pressure and salt and you can still say shoot torpedo. Do I need to send you video proof that tooth brushes with replaceable batteries exists or you can google it yourself? My son has one that is almost 10 years old too , it uses 2 AA batteries , brand is Oral-B .