Normally when im cutting up Eucalyptus, its just a wedge or two and an 9lb sledge.
Now my uncle picked up a really badass axe that i used once, but i have no idea what its called. Basically it was somewhere between a maul and a regular axe. But when you got so far into the wood, it forced to little arms out about 1" or so on each side. So when you really power into a log, with the nice sharp blade it sinks right in, then the arms spread the log apart like a wedge at the same time. With a really good swing i would make 16" long 12"wide or so eucalyptus logs explode. It was way more fun than one should be allowed to have when your splitting wood manually. And at 145, im not exactly a heavy hitter.
heres a picture, though the detail is kinda hard to make out. The little spring loaded are also makes it almost impossible for the axe to get stuck too.
