The one I have is too small to split a whole log; the wood I get is already in halves or quarters and I split it to eighths or less for my little decorative fireplace.

Still, it would be easy to improve on the design; a better blade, a bigger or adjustable frame. The "frame" is really just a thing the wood leans against to balance on the blade.

But it's very efficient. And I prefer being hit in the nuts with a hammer than an axe.

The video will be up in a couple of days, just needs a minor edit.