I often see reccommendations to sharpen broadhead blades before using them for hunting, even if they've never been used before. I have used Thunderheads and Muzzys now, and both of them have easily shaved hair right out of the box. I seriously doubt that I could make them any sharper than the razor sharp factory edge. Someone prove me wrong here. How do you get a better edge than that of an x-acto blade?