Blocks of wood split with the grain when you open a crack with an axe. The more suddenly the crack opens and the wider it opens affects just what size of wood can be split. Nothing is new in the world and the technique of twisting the axe slightly just after it bites into the wood to open the crack more suddenly and wider is well known. It works very well, but the effect on your wrists won't be known for a few years when it will become very evident.
I use a different route in that I highly finish the bevels and ramps on hatchets and axes so that they sink in very easily and open a crack. I'm confident that I could split that small wood with a 10 oz hatchet and baton in the same time with far less effort. The key is to finish the tool so that it totally sinks into the wood with little force applied. Larger hatchets need to be hit with a larger heavier baton due to the need to overcome the inertia due to their heavier weight and because they are wider at the eye. A properly finished boy's axe is about the limit for one hit blows working with a heavy baton, but it does work well enough where there are no chopping blocks. The strange fact is that while a tiny hatchet will split large and twisty grained wood easily with one baton blow, a regular axe tapped in more slowly will leave wood attached at the base, even though a wider crack is opened: so everything depends on the suddenness of opening a crack.
Properly finishing bevels and ramps is a time consuming task with a large sanding pad. I would sit on the beach etc. by a poor fire and smoke the blade before batoning it into a big round. Then you can see the high spots where the black rubs off and work on them. Things come together very suddenly and I have a scar to show for that when I was paying more attention to my grand-daughter than the task at hand. A Norlund hatchet went from sinking in 1" with a light baton hit to splitting the block easily and swinging free.
I've had good experience with properly finishing mauls and 8lb wedges, too. It's pretty clear that the maul in the video has had no work.. I look back on a lot of splitting and wished that I had thought of work on the maul a few decades ago! For the wood shown in the video, a properly finished light axe would have split the wood with far less work than swinging a maul.
I use a different route in that I highly finish the bevels and ramps on hatchets and axes so that they sink in very easily and open a crack. I'm confident that I could split that small wood with a 10 oz hatchet and baton in the same time with far less effort. The key is to finish the tool so that it totally sinks into the wood with little force applied. Larger hatchets need to be hit with a larger heavier baton due to the need to overcome the inertia due to their heavier weight and because they are wider at the eye. A properly finished boy's axe is about the limit for one hit blows working with a heavy baton, but it does work well enough where there are no chopping blocks. The strange fact is that while a tiny hatchet will split large and twisty grained wood easily with one baton blow, a regular axe tapped in more slowly will leave wood attached at the base, even though a wider crack is opened: so everything depends on the suddenness of opening a crack.
Properly finishing bevels and ramps is a time consuming task with a large sanding pad. I would sit on the beach etc. by a poor fire and smoke the blade before batoning it into a big round. Then you can see the high spots where the black rubs off and work on them. Things come together very suddenly and I have a scar to show for that when I was paying more attention to my grand-daughter than the task at hand. A Norlund hatchet went from sinking in 1" with a light baton hit to splitting the block easily and swinging free.
I've had good experience with properly finishing mauls and 8lb wedges, too. It's pretty clear that the maul in the video has had no work.. I look back on a lot of splitting and wished that I had thought of work on the maul a few decades ago! For the wood shown in the video, a properly finished light axe would have split the wood with far less work than swinging a maul.