It’s a sign of the times that we’re now becoming obsessed with marking stuff. Whether it’s for gift purposes (‘your name engraved…’) or for security, we’re increasingly finding ways to ensure that our name, trademark, logo or other details appear on items we own or sell. The trouble is, while it’s easy to do on materials like cloth and plastics, it’s much harder to do properly on metal. Sure you can use a cheap Dremel or other engraving tool, but…