How to cut the charcoal pen for art without breaking? I wasted two charcoal pens,

There are three kinds of carbon pens, soft, shot and hard. Both carbon and hard carbon are easy to cut. If you are afraid of breaking when scraping the carbon core after wood cutting, lift it with your hands and wash your hands when it is dirty. As for soft carbon, it is more difficult to cut. First of all, make sure that its carbon core has never fallen off and is intact, and then be careful not to scratch when cutting wood. Be sure to scrape the carbon core gently. If it is really difficult to cut, I suggest you buy soft full carbon.

Copy, I hope it helps.