Brilliant! While I've generally assumed I'd make trees--aspens in particular--using wire (I recently bought a thousand feet or so for this very purpose) it had not occurred to me that a simple electrical connection from roots to branch ends could make this so...easy. ???
As regards Aspens in particular, I've wanted to try 3D (SLA) printing them, or at least the trunks, which would be done without internal wires. For Aspens, I think painting or ink printing the trunks should or even must be done light grey colors, along with dark-black horizontal "slashes" where the branches break off, but it's true the upper branches are much darker.
Which begs this question: Couldn't a temporary electrical feeder be set alongside such a trunk (or even a simple wood trunk) to also "capture" these wig branches? Seems to me it might be possible, and without a lot of effort, either. Just imagineering, of course.
In any case, this will be very helpful. Thanks for posting it!