I am learning, and I am delighted with my latest root graft results. I did a bit different than before, here, I opened 2 or 3 slits just enough to fit the roots I had ( maybe 3/4" long) opened the skin of the cutting just enough to put the root in (sorta like an upside down "T", except, just the "l" incision.
I carved the root to expose more surface to adhere, inserted in the incision "l" and rubber banded it tight. I also tried splitting a bigger(fatter) root in half to see if it would work - Well it surprised me! In one week, the roots are taking off amazingly. They are still in the rooting chamber box, and I will let them there a bit more before I put them in cups.
Psst, Dave, I have already done some neat ones, but I want to make sure they make it before I post pictures. I took large pieces from my tree ( they are 2-4 feet fully branched) and I brought a 5gallon plant inside to warm up and yes, many different 'tips' went in each of those branches. I cannot wait for Spring to be here to do them outside and get their fruit.