rockm
Spuds Moyogi
I never said it wasn't possible. It's not easy, particularly if you don't understand the material you're working with or the mechanics of bonsai.My thought is the same. A cascading oak is possible but is fraught with challenges.
FWIW, if the "oak image" is what someone is after, other species can fill in for the species and do it perhaps better. Boxwood in particular. The two bonsai below are boxwood. The tall one is a Japanese box (collected from an old hedge in Arlington, Va.) made in the image of the tall mountain oaks I knew when I was a kid in the Blue Ridge. Those trees are battered by ice and wind at relatively higher elevations (like 3,000 ft.). The second is a Kingsville box made in the image of a Southern Live Oak. Both took a lot less time to develop than the 'real' oak.