A titanium flexure with walls five human hairs thick

Gen-El-Mec milled a titanium part with 0.014-inch walls and ±0.0005-inch tolerance, a useful reminder of how extreme conventional machining can get

5 strands of human hair. That's the thickness of the walls on this titanium flexure made by Gen-El-Mec. According to the requirements this part had to be milled, so that's what they did. .014" +/- .0005"