Here's my 2 cents advise for new/beginning grafters. I have learned to cut away from me, not that hard to do, but if you must cut towards you then I would suggest you use a glove (Home Depot special) on the hand holding the piece/scion. When you cut the rootstock, do the same thing, put the glove on the hand holding the rootstock when you cut into it. A long time ago when I was grafting at dawn on a ladder cutting the citrus rootstock to do a cleft graft in a hurry, the knife cut the small rootstock branch off and I cut my hand (not bad, but bleeding), that's when I said use a glove idiot.