If you use stick coals you know its sometimes a pain to score them every time so i been using my dremal. One problem is that is spits out all this coal dust and if your close enough your snot will turn black haha
. Word of advise dont cut them so close to your face or you will wake up like WTF black snot when you blow your nose. And that can't be to healthy. But im not going to lie its so much easier to do then using a knife.