I’d get out of habit of placing thumbs on top no matter how right it feels.Satisfying!!! Sounds like it’s biting down on a crisp apple.Only dangerous to those who easily get distracted. In this world of safety first, I'm happy to see a machine untainted by over-restriction.As a man of culture, I’d recognize a ThumbLopper Deluxe anywhere.All you safety nuts out there. Trust that the operator of the machine made it, and doesn't want to lose limbs either.