I think its not "NextGen"
I tried this, and I have to say that I have higher success-rate with normal/classical grafting. This method is not very usefull for little grafts, but for older offsets or older seedling.
According to my experiences, young seedlings are better to graft on selenicereus or hylocereus. Yesterday I tried to graft seedlings on Myrtilocactus, I made 30 graftings - seeds mostly from Koehres (Asterias Redflower, Asterias SnowSupar, Onzuka, Onzuka Tricostatum) -> we will see how they will going
Greetings to all of you.