Bladesmithing is a fine art mastered by only a few and watching this guy turn an old wrench into a knife is a great example.
Watch Mike AKA Trollsky turn this old wrench into a pretty awesome knife. This is by far one of the better knife making videos I have come across in a long time. Trollsky makes some great knives and this is an epic video of one of his creations. You can check out his website here. After this check out the Arsenal 22LR knife gun.