Ideas for chopping block

[jargo432]

I've been crusing YouTube looking at how people put tires on chopping blocks for splitting.  I did it for a while but never really had it set up right and it pretty much came apart after a day of splitting.

I'm looking for ideas on the best way to attach the tire to a splitting block.  One thing I have to do is get a bigger block, the one I have is about 16 inches across and the tire I want mounted has a 25 in O D.  (not gonna work)

I thought maybe I could find an Elm tree and sacrifice it for the base if I could find one big enough, but to date I havn't found one on my land.

The most radical idea I've had is to pour a cement base.  Then build on the top of it with oak 4x4 laminated together and build a frame that would have 3 post that would ride up the sides of the tire holding it in place.

Any ideas would be welcomed.
Thanks

[mesquite buckeye]

Big old nasty stumps are the best for that. The wood is interlocked and is hard to split. ;D