The Homemade Hexagon Cake Knife [VIDEO]

This guy has entirely too much time on his hands! Even so I have to say his homemade hexagon cake knife is pretty cool. So why a hexagon knife, why not? I didn't think it would work very well but as it turns out it cuts cake into perfect little hexagons like a honeycomb. I bet it won't be too long before this ideal becomes available in stores.