Check www.raptornails.com. These are polymer nails shot from a pneumatic gun. I'm thinking of buying the $210 gun and the 7/16" nails. Intend to use them nailing mahogany 1/8" planks down in epoxy over ply. I'd leave the heads a little bit proud then when the epoxy is dry, go over with a sander and sand the heads off. The nail shaft will not rust of course, takes up the color of the stain, and according to the company "becomes one" with the wood. I tried this on a scrap, and after sanding, staining, and varnishing you really can't see most of the nails. Anybody tried this business?