I see what you're getting at. Take an aluminum coffee can lid and whip
it through the air. It slices, not really flys. Trying to find something tens
of thousands of an inch you run into the problem of strength vs. weight.
Aluminum is thin but weighs a lot. What about pressing carbon fiber?
Or fiber glass or epoxy resin sanded down razor thin? Some resins are
light yet very strong. You would have to make a mold, pull it, then sand
it. Might take hours just sanding a wing.