People have tried this: they made a stone axe, and they made a bronze or steel axe. Then they cut down a tree. The metal ones work loads better. I'm not entire

People have tried this: they made a stone axe, and they made a bronze or steel axe. Then they cut down a tree. The metal ones work loads better. I'm not entirely sure if a stone axe is sharper or not, but a steel one will last much longer – a metal one may corrode, but a stone one will chip easily (whether it's sharp or not is unimportant as such; you don't make an axe to be sharp, you make an axe to cut down a tree – one reason steel axes work better is that they're smaller: for bigger trees you will have to cut less). There's a reason why people started using steel, and why archaeologists find discarded broken stone tools all over the place.