The video has the order of operations mixed up a bit, but watch the guy at 0:33 using the press roll, and then watch the machine that stamps the hot blank at 1:37, it appears to be where the 0:33 guy is getting the pieces to draw out in the roll. He's left with a piece that sort of has a blade shape, but has no tang. Even if you trim the flash off it would be a little stub. Just curious what that is since he's making a pile of them.