One clear message to take from that video, something that isn't always apparent to someone starting working with machine tools of any kind, is that you can often spend much longer making a fixture and setting up than you do machining. However, that fixture and set-up time are the difference between a successful job and one that flies out of the chuck or ends up with gouges across the workpiece where it slipped in the machine vice. Of course, a big lathe and 12" 6-jaw chuck also help!