Wow, if you could do it for less and faster than the replacement/ cores, you could be in business...or at least in your neighbourhood. OR. Do a detailed video, so all us techs, would get a log splitter, and maybe a press,( that we have have). I assume any of us techs, have a press, and don't have the tools/ jigs, or efficient time to do it. Believe me, , we have a press, and if I could just get the bearings/ seals, and do the replacement cheaper, I would.