A sharp axe. There should be no alternative for any Woodsman worth his salt.

Compact, so that you can keep it with you, there when you need it. Effective, so you don’t need anything else.

Small-size silicon carbide grindstone for sharpening axes. Dual grains (course and fine) for fast or fine grinding. Can be used both dry or with oil / water.

You have seen this now, there is no reason to be caught with a blunt axe. There are no excuses.