I have a Sharps pygmy (pictured below) that is on its own roots. It is nice and healthy, but grows pretty slowly since it is dwarf. I like where the top is heading, but the trunk is a little thin and slender. If I want to enlarge the lower trunk, but get taper, at this point I need a lower branches to act as sacrifices. These however will grow very slowly given the variety (if I can get them there at all.) I was wondering if anyone has ever tried thread grafting standard Japanese maple low on the trunk of a dwarf variety and letting it grow wild to build the lower trunk. I can then just remove the grafted branches when they have accomplished my goal. My thought is that the standard maple would grow much faster and allow for trunk thickening more quickly. Would it work?