Your wife might think you have lost your mind but as with everything that kids find fascinating, knives and fire being high up on the list, teach them early, teach them right. I was eight when I recieved my first pocket knife and the lessons to go along with it. Definately do this with your kids, great memory for you and for the boys when they have their own kids. As far as knocking down the edge a bit, don't. I can tell you from experience that a slightly dull knife will certainly do more damage than the sharp knife. Clean slices heal faster and neater than jagged tears and rips in the skin.