The world's smallest micro-carving engraved on the edge of a blade

Graham Short, 64 years old, is fond of micromachining. He decided to engrave his motto, "Nothing is impossible", on the edge of a Wilkinson (a razor blade brand) blade. After failing 150 times and spending 7 months, he successfully completed this work.

If you buy this Wilkinson razor blade, it now costs £47,500. Of course, if you want to see the words on the edge, you will need a 400x medical microscope.