An axe can be extremely dangerous when it is not sharp.
So it is important to keep your axe sharp at all times.
Here are some tips on Sharpening An Axe.
Get rid of burrs using a file.
Use a whetstone to impart the sharp edge.
Remember, a file is a one way tool.
It only works when pushed, not pulled.
Always sharpen inwards.
Finish with a smooth stone using a circular motion.
Wilderness Survival