I went in rather another direction since while I like the Small FA, I found that it did poorly when used to split wood with a baton.
Basically I started with a new Hults hatchet, removed the head and then put on a longer handle.
I did quite a lot of grinding in stages afterward to bring out the wide bevels and smooth ramp to the eye area. The overall idea is that if a person can create a perfect wedge, then with a baton, even metre lengths of wood can be split in one baton blow.
This pic is with a tiny hatchet and a light blow to keep the wood together long enough to get a picture with the primitive camera of the time. Notice both the split and the fact that the whole of the tiny hatchet head isn't sunk into the wood:
Red has a good point in that a well finished hatchet is capable of astounding amounts of work, and of course a larger axe will easily outclass the Small Forest. Here at times the lower dead branches of conifers are the ony dry wood around. I find the longer handle to be of advantage over a regular hatchet in safety when putting in a few chops above my head, so that I can then break off the branches. I tie up a bunch and drag them to a fire site. Since I like beaches, there are driftwood logs not covered in snow. I lie a branch in line with the length of the log, and a heavier head on the hatchet/axe makes it easier to drive it through the branch and into the log. I do this half way along the 2+ metre branch, and both in line with the length of the branch and log. At this point it's a good idea to use a baton to make sure that the axe head is firmly embedded in the log. Now I use body weight to lever the ends of the branch and the initial split opens in both directions to the ends. A heavier head and a bit of experience makes this much faster and easier than it would appear. You just keep splitting the already split lengths until they are the required thickness and can be broken by hand.
I've been impressed enough with the performance of the cheap soft Hults head to dig out a better vintage one and do things properly. The big issues with hatchets and short axes is trying to overpower them, or trying to drop a dead brittle tree (common on the coast here). In the latter case if the tree breaks, a nasty sharp spear descends and you are too close.
