It's not necessarily one coin at a time, a strong magnet could pull multiple, which means you could make $3-4 in a few seconds once you mastered it. Push it in

It's not necessarily one coin at a time, a strong magnet could pull multiple, which means you could make $3-4 in a few seconds once you mastered it. Push it in so it bends down, pull out, drop into the shaving bag, insert again, etc. He probably had a lot of time to work on each box.