I have a permanent dent in one finger where the handle of a 12-lb sledge caught a branch & my finger (on the handle next to the head of the sledge) got smashed between said handle & the top of a wedge I was trying to set -- we were cutting firewood on an old farmstead & only had chain saws & a sledge & wedges to bring the biggest pieces (old ash trees with trunks 20 - 30 inches in diameter ) down to where they'd stack in the pickup.
This spinning thingy would snatch loose clothes or gloves, but looks smooth enough to not rip your hide if given due respect & is surely more compact than one of those tow-behind wedge splitters with a gas engine, hydraulic pump, etc.
