In operation, suspended and powered by two 30 awg wire wrap wires, the copter looks like this.
This started as a drawing by my wife, Annelle.
The challenge--trying to make this appear to "float" in the air while operating for hours nightly in a display window--required supplying power and support without getting tangled in the blades.
I created a rough test rig to see if support wires could go through the center of the rotor.
Next, I mounted a motor and supplied power to see if the rig could be balanced and not spin wildly.
When this proved workable, I decided to proceed.