Bark grafts are pretty much the best. I have better bark grafting success than flap grafting. I don’t know why flap grafting/banana grafting was impressed upon me so much.
I like chip buds to some degree on a Hot Callus Pipe DIY but the buds can break in the pipe before they’re healed. I started to chip bud on the pipe and then I realized that the bud was going to be inside the callus tube/instrument so I emailed Tom Wahl at Red Fern Farm and asked what was going to happen at which he said, 'they’ll break in the tube but most of the time (someone) will be OK" and that’s exactly what happened. I ended up doing as many v-cut tool grafts with a single bud as possible and then went back to doing some totally strange grafts with whatever way I could use a scion I recall specifically with buds circling the stick the 3+ inches toward the tip bud. You know, you start looking at ways to whittle off buds and I know I have some real good examples that I either sold already or are in my hoophouse.
Then I went over to a friend’s to do simple chip budding (pawpaws) which literally take 30-40 seconds a graft while listening to him talk and learning about the Civil and whatever; he messaged the other day that 37 of 42 had callused.
Persimmons are the same way. They callus at the same rate as a pawpaw so I want to try chip budding Saijo onto 1-year well-rooted seedlings.
Dax