Back in my youth when I was using Wasp or Sattelite broadheads, can't remember which one I was using at the time, I tried to unscrew one from an aluminum arrow. It was on there pretty tight because I used a broadhead wrench, The wrench wasn't handy when I was trying to take it off and I was twisting so hard mt fingers eventually slipped from between the blades and rolled over the edges. I was bleeding pretty bad and went to the bathroom sink so I wouldn't bleed all over the house, my mom would kill me, and I nearly fainted. Remember, I was young. Of course back then, we didn't go to the doctors for nothing, my mom wrapped them with some band-aids. I can still see the scars on my finger and thumb. Valuable exibits for showing my son!