My aunt had an uncanny ability to upend a loaf, cut the crust off, butter the bread then slice it, butter then slice, doing the whole loaf whilst holding a conversation with her mother and brother, watching the children, organising the rest of the meal. Each slice would come out with almost mathematical precision, so it looked machine sliced.I tried it once, nearly stabbed my grandmother and her budgie, almost took my own eye out and made a wedge that was fully 4 inches thick at the wide end!.
I tend to buy a lot of sliced bread.....
LTS