I just finished making a new leather sheath for my Gransfors Bruks small forest axe. The one that comes with the axe is very nice and fits well but it only covers the bit. I wanted something that would cover the entire head. I take my axe on all my canoe trips so it's going to get wet and corrode. To prevent this I like to season the metal head with bore butter which is actually used to season muzzle loader barrels but works just the same on any metal surface. If I used the original sheath that came with the axe bore butter would get everywhere and make a mess of everything. By covering the whole head it keeps the butter contained and eventually the butter will build up in the sheath and season the axe every time it is placed in the sheath.