I didn’t much like the thought of gluing the other ends of the rubber bands to slits in the nose cone, so I decided to give the other way a try. I drilled small shallow holes in the nose cone above each rotor. Then I pushed pieces of wire into the balsa at the bottoms of the holes, pointing away from the rotors, and filled the holes with epoxy. Prickly.
I wasn’t sure what to do about hooking the rubber bands over the wires. After it was too late I realized could have just glued both ends to the rotors. Perhaps the best solution. Instead I first figured out how much I wanted to stretch each band — ignoring the bit about “E-flat above high C”, if for no other reason than these bands are longer than the standard configuration — then folded each over, secured it with a bit of thread, and finally glued the loop with CA. I put a CA applicator through the loop to make sure it stayed open. Is this going to work? I have no idea, which probably means, no, it won’t.
I scribbled some red Sharpie on the nose cone, rotor upper surfaces, and fins, and called it done.Not my finest build, really. Alignment accuracy was not what it could have been. Frankly I’ll be a bit surprised if it doesn’t tear itself to bits on the first flight, or even before that.