For those of you with access to a full shop—I'm looking at you, ID students—if I gave you a half-dollar coin and asked you to turn it into a wearable ring, which tools would you turn to? The drill press and bench grinder are probably the first to come to mind. That's why it's all the more amazing that this unnamed craftsperson did the same using little more than a hammer and a handheld drill (old-school style at that, corded and with keyed chuck) with a variety of attachments, some store-bought, some seriously jury-rigged.
The safety-minded among you will cringe—this man has no regard for his fingers, and while he never damages them on camera, it does look like the "Don't Do—" part of an industrial safety training video. Yet you can't help but be impressed by the results, and by the sheer range of uses this guy gets out of his drill.