If you have big logs which are difficult to root...
Then you can follow this grafting system..

For rootstocks I used seedlings since they have taproots. If your area is too arid or too wet this will help.

Interesting.  Different.  Can you explain a little the rationale for the method?  Why use the log as opposed to grafting the scion onto the seedling root?

I had to remove an old plant and these logs are slow growing if grown on its own roots. So I decided to play around with them.

Hi,
Keep us posted.
I can't figure now how that can help, but let's see what the outcome is.
Grafting several rootstocks, you have more chances of ending with roots attached to the log.
But what if several get successfully grafted ?
Will the young roots be able to feed the log ?
Will the log heal ?
Will it start rotting on one side while rooting on the other ?

Good luck !

I remember I think it was Grasa that also used roots grafted onto scions to jump start the rooting process. I just so happen to have roots from a plant I dug up and refrigerated. Do you think they would work?