treebeard55

Another technique I've heard of is to place each pot into another container, one large enough for several inches clearance around the sides of the bonsai pot itself. Fill the gap between the two pots with sphagnum peat (or something similar) and keep the sphagnum moist. Evaporative cooling, again, is what does the trick.

I've not tried this technique myself, but have heard good things about it.

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Treebeard 55

"To do bunjin is easy. However, to do a bunjin masterpiece is difficult." -- Susumu Nakamura, at MBS '07