First I am referring to mango grafts only. Second is scion selection which is that the thinner more green the more flexible it is. This means that when you have such a scion and you slice off a side to attach to a branch it will be so flexible that it should attach to the branch side with very little pressure. Not in every situation but in most strong pressure shouldn’t be needed if one chooses a young thin flexible scion. In most of these cases you might need to twist the Buddy tape near the top of the graft to hold it down better because twisting it allows much stronger pressure. But before doing this one must hold the separated sides together then hold it with the twisted tape. And sometimes a small clothes pin will hold the top snuggly but gently. To me using electrical tape means you are putting a square peg in a circle.
Give this video a little time to load up. PS I am sorry but if anyone says their grafting success rate is 100% I just don’t think that’s possible unless your sample number is very low.
https://share.icloud.com/photos/0PFcax_I4VUWPJPhsM8BVS2Lw