Hatchet or camp axe is fine- but so is the REG-DF and even knives like the SOD.I demolished several fatwood stumps toady and over the weekend and used my Reg just to be sure there was no problems. Kinda cool all the different names for fatwood as Doc stated above. Most of the guys here ( Oregon Coast) just call it" trophy pitch" . In this wet climate it is about the only thing that will get a fire going good. Thanks