I'm not sure but I am attempting one right now. I like to use the side veneer graft on mangos but I like using side veneer on everything...=)
I had recently grafted two varieties onto that same seedling earlier this year.

side veneer means fusing two rooted plants together, then detaching?
Someone is sending scionwood, so I need to do whip and tongue or budgrafts I think.

Thanks,

Scott

Side veneer is also with cuttings. I think its one of the easier grafting methods to use. It seems to be one of the few that works well with guavas also. I've also used it on mangos and about everything else. Check out the video. It's very nicely demonstrated. Scroll all the way to the section on mangos and click on "veneer grafting," you will need real media to play the video though.
However if your confortable with other techniques, there shouldn't be any problems. Veneer grafting is just a preference.

Here is a link that might be useful: veneer grafting

That video was very helpful! My Lancetilla Mango is in a rapid growth stage now, with lots of new pink leaves. According to the video, that is not the best time/place to get scions.

Should I wait to cut the scions until the new growth has hardened up a bit? I don't want to waste Scott's time!

The Mallika and Cogshall look promising though.. Here's one.

Lisa

Hey Lisa, I learned how to graft my first citrus from that video.
I think you should wait until the new growth hardened up a bit. I have found that scions of mangos still seems to work well even if it just pushing new bud growth. However once it push out too much, its not very good.

Can Avocado trees be grafted the same way as the mango scion graft?

I've never grafted an avocado but I don't see why not. The veneer grafting seems to work well for almost everything I tried. Its worked on citrus, stone fruits, guavas, mangos. I think its a good one for beginners because there lots of contacts between the cambium layers, so you have lots of room for error.

maureen: Yes, I believe avocado and mangos are the easiest things to graft. Actually, my first graft was on an avocado tree, with the side veneer graft. pretty simple.