The problem is ,if we do too much of a project, the child loses interest. They have to feel the pride in their workmanship. Pressure sensitive rotary cutters are great for kids to use. They are not like us, always in a hurry. They work very hard to "get it right". I have never had a child cut themselves, but I have had their mothers do it. I teach the cut as you go method. Cut enough for the time you are going to spend before you break for lunch,etc. Come back and cut the next batch. This saves the boredom factor as the process keeps changing.