...but now that it's been raised, I'm certainly glad to have it answered:
This redefines "paper cut", I guess. And while this really doesn't have any practical applications, it was interesting to do. Even more so, since the paper I used was nothing out of the ordinary - just regular printer paper with no special treatment.
I did make another "blade" to test it on a piece of aluminum, but it more or less just polished the edge before wearing out. The abrasiveness of the paper works well on wood, but is no match for anything harder.
Attribution(s): All artwork, publicity images, and stills are the property of John Heisz and ibuildit.ca.