There were a few companies that made a splitter that attached to your tractor's PTO shaft. It works like a big screw with a taper much like a traffic cone. As the unicorn horn screws into the side of a round, the round is split open. It works fast, efficiently, quietly, but not safely. Many folks have been killed or lost limbs with these devices. The makers of the tractor mounted splitters have gone away due to the lawsuits. They are dang darn fun. Just don't bend over and let this thing screw into your ear or your rear end or catch your sleeve or... Cause there ain't no way to stop it from spinning and it has the power to rip your arm clean off. I split up no less 2.5 cords today before the rain came. I had a log load delivered that was supposed to be 4-5 cords of doug fir.