Working away at a forge all day can make a smith feel moody, as they sweat every last ounce of hope out of their body while hammering away on a piece of metal which doesn't care about your pain.
This is the reality blacksmith Niels Provos is faced with every day, which is why he approached the prospect of forging a knife out of wrought iron wagon wheels with such "enthusiasm".
Niels should record his own series of relaxation tapes, because I found his fairly monotone drone to be quite soothing and a heck of a lot better than twenty minutes of hammer head hitting steel!
-Via Sploid